CN102729999A - Vehicle vibration control device and vehicle vibration control method - Google Patents

Abstract

The invention provides a vehicle vibration control device and a vehicle vibration control method. The invention aims to inhibit the change of wheel load while making it possible to improve steering responsiveness and inhibit side-tipping movement. A driving torque which inhibits the change of components stemming from the driving torque (Tw) and forming vehicle chassis movement is calculated. The calculated driving torque multiplies a gain K1 (K1>0). A driving torque which inhibits change from an upper force Fzf and a lower force Fzr is calculated, and the calculated driving torque multiplies a gain K2 (K2>0). A driving torque which inhibits change of a front wheel load from turning resistance (Fcf, Fcr) is calculated, and the calculated driving torque multiplies a gain K3 (K3<0). Accordingly, the driving torque becomes a boost of the changing direction. All the multiplying results are added together, and correction of driving torque is conducted on a driver based on the sum.

Description

Body oscillating control setup and body oscillating control method

Technical field

The present invention relates to a kind of body oscillating control setup and body oscillating control method.

Background technology

In the past, as this technology, the technology that for example exists patent documentation 1 to be put down in writing.

In the technology that this patent documentation 1 is put down in writing; Wait the steering state of estimating chaufeur based on turning velocity, transverse acceleration (horizontal G) and yaw angle acceleration/accel, increase the feedback gain that uses in the vibration damping control that vibration to car body (for example the upspringing of car body, luffing) suppresses according to the steering state that estimates.Thus, increase the absolute value of value of feedback, come to suppress more reliably the upspringing of car body, luffing, thereby realize the raising of vehicle handling and stability.

Patent documentation 1: TOHKEMY 2008-179277 communique

Summary of the invention

The problem that invention will solve

Yet; In the technology that above-mentioned patent documentation 1 is put down in writing, though can suppress the vibration of car body, the i.e. change of wheel load, because the absolute value of value of feedback increases; Can produce the reduction of steering response property, the increase of inclination campaign, thereby might bring sense of discomfort to chaufeur.

The present invention is conceived to the problems referred to above, and its problem is, in the change that suppresses the wheel load, makes the raising of steering response property and the inhibition of inclination campaign become possibility.

The scheme that is used to deal with problems

In order to address the above problem, the present invention is controlled to be driving torque the direction that the change that is derived from the composition that requires driving torque and road surface interference in the composition that constitutes the car body bobbin movement is suppressed.In addition, driving torque is controlled to be the direction that the change that is derived from the composition of turning resistance in the composition that constitutes the car body bobbin movement is encouraged.

A kind of body oscillating control setup is characterized in that possessing: the moment of torsion extra cell, and it is to wheel additional drives moment of torsion; Motion estimation unit, its road surface that requires driving torque, puts on wheel from the road surface according to chaufeur are disturbed and through turning to the turning resistance that puts on wheel to estimate the car body bobbin movement; Suppress the torque control unit, its driving torque that above-mentioned moment of torsion extra cell will be added is controlled to be the change of the composition that is derived from the above-mentioned requirements driving torque in the composition that constitutes the above-mentioned car body bobbin movement that is estimated by above-mentioned motion estimation unit and is derived from the direction that the change of the composition that disturbs on above-mentioned road surface suppresses; And encouraging the torque control unit, its driving torque that above-mentioned moment of torsion extra cell will be added is controlled to be the direction that the change that is derived from the composition of above-mentioned turning resistance in the composition that constitutes the above-mentioned car body bobbin movement that is estimated by above-mentioned motion estimation unit is encouraged.

A kind of body oscillating control method may further comprise the steps: motion-estimation step, according to disturbing and through turning to the turning resistance that puts on wheel to estimate the car body bobbin movement on the road surface that requires driving torque, puts on wheel from the road surface of chaufeur; Suppress the torque control step, the driving torque that will be additional to wheel is controlled to be the change of the composition that is derived from the above-mentioned requirements driving torque in the composition that constitutes the above-mentioned car body bobbin movement that estimates through above-mentioned motion-estimation step and is derived from the direction that the change of the composition that disturbs on above-mentioned road surface suppresses; And encouraging the torque control unit, the driving torque that will be additional to wheel is controlled to be the direction that the change that is derived from the composition of above-mentioned turning resistance in the composition that constitutes the above-mentioned car body bobbin movement that estimates through above-mentioned motion-estimation step is encouraged.

The effect of invention

According to this structure, before the beginning steering operation, the direction through the change that driving torque is controlled to be to the composition that requires the interference of driving torque and road surface that is derived from chaufeur suppresses can suppress to take turns the change of load.In addition; When beginning steering operation,, can encourage underriding (nose-down) motion through the direction that the change that driving torque is controlled to be to the composition that is derived from the turning resistance that puts on wheel encourages; Thereby can increase the wheel load of front-wheel, can improve steering response property.And, through in the change that suppresses the wheel load, improving steering response property, can relax the variation of transverse acceleration, thereby can suppress the inclination campaign.Thus, can in the change that suppresses the wheel load, make the raising of steering response property and the inhibition of inclination campaign become possibility.

Description of drawings

Fig. 1 is the concept map of summary structure of the vehicle of expression first embodiment.

Fig. 2 is the block diagram of functional structure of the vehicle of expression first embodiment.

Fig. 3 is the block diagram of the structure of the performed program of expression microprocessor.

Fig. 4 is the block diagram of the structure of expression propulsive effort car body vibration-damping control unit 16.

Fig. 5 is the diagram of circuit of the action of expression propulsive effort car body vibration-damping control unit 16.

Fig. 6 is the block diagram of the structure of expression suspension travel calculating part 21.

Fig. 7 is the diagram of circuit of the action of expression suspension travel calculating part 21.

Fig. 8 is the figure of method of calculating that is used to explain the path increment of suspension.

Fig. 9 is the coordinate diagram of expression front wheel suspension geometrical property.

Figure 10 is the coordinate diagram of expression rear wheel suspension geometrical property.

Figure 11 is the figure that is used to explain auto model 26.

Figure 12 is the instruction diagram that is used to explain the action of torque command value calculating part 19.

Figure 13 is the instruction diagram that is used to explain the direction initialization of tuning gain.

Figure 14 is the instruction diagram that is used to explain the establishing method of Correction and Control command value K3C.

Figure 15 is the instruction diagram of action that is used to explain the body oscillating control setup of first embodiment.

Figure 16 is the instruction diagram of application examples that is used to explain the body oscillating control setup of first embodiment.

Figure 17 is the concept map of summary structure of the vehicle of expression second embodiment.

Figure 18 is the block diagram of the structure of the performed program of expression microprocessor.

Figure 19 is the block diagram of the structure of expression propulsive effort car body vibration-damping control unit 16.

Figure 20 is the diagram of circuit of the action of expression propulsive effort car body vibration-damping control unit 16.

Figure 21 is the figure that is used to explain the action of controller gain and tuning gain multiplied operational part.

Figure 22 is the coordinate diagram of the relation of tuning gain of expression and body speed of vehicle.

Figure 23 is the coordinate diagram of the relation of tuning gain of expression and body speed of vehicle.

Figure 24 is the coordinate diagram of the relation of tuning gain of expression and body speed of vehicle.

Description of reference numerals

7: inverter (moment of torsion extra cell 100); 8: braking CD-ROM drive motor (moment of torsion extra cell 100); 9: variable-speed motor (moment of torsion extra cell 100); 12: braking CD-ROM drive motor ECU (motion estimation unit 101, motion-estimation step, inhibition torque control unit 102, inhibition torque control step, growth encourage torque control unit 103, growth encourage torque control step); 13: actuator requires torque calculation unit (motion estimation unit 101, motion-estimation step); 14: adder calculator (suppress torque control unit 102, suppress the torque control step, encourage torque control unit 103, encourage the torque control step); 16: propulsive effort car body vibration-damping control unit (motion estimation unit 101, motion-estimation step, inhibition torque control unit 102, inhibition torque control step, growth encourage torque control unit 103, growth encourage torque control step); 17: input transformation component (motion estimation unit 101, motion-estimation step); 18: body oscillating estimating section (motion estimation unit 101, motion-estimation step); 19: torque command value calculating part (motion estimation unit 101, motion-estimation step, inhibition torque control unit 102, inhibition torque control step, growth encourage torque control unit 103, growth encourage torque control step); 22: force transformation portion (motion estimation unit 101, motion-estimation step) up and down; 25: turning resistance estimating section (motion estimation unit 101, motion-estimation step); 26: auto model (motion estimation unit 101, motion-estimation step); 27: the first regulating controls (suppress torque control unit 102, suppress the torque control step, suppress torque arithmetic unit 104); 28: the second regulating controls (suppress torque control unit 102, suppress the torque control step, suppress torque arithmetic unit 104); 29: the three regulating controls (encourage torque control unit 103, encourage the torque control step, encourage torque arithmetic unit 106); 30: the first tuning gain multiplied operational parts (suppress torque control unit 102, suppress the torque control step, suppress multiplying value calculating unit 105); 31: the second tuning gain multiplied operational parts (suppress torque control unit 102, suppress the torque control step, suppress multiplying value calculating unit 105); 32: the three tuning gain multiplied operational parts (encourage torque control unit 103, encourage the torque control step, encourage multiplying value calculating unit 107); 33: motor torsional moment transformation component (moment of torsion extra cell 100); 50: driving engine (moment of torsion extra cell 100); 51:MT variable-speed motor (moment of torsion extra cell 100); 52:ECM (motion estimation unit 101, motion-estimation step, inhibition torque control unit 102, inhibition torque control step, growth encourage torque control unit 103, growth encourage torque control step).

The specific embodiment

Then, with reference to accompanying drawing embodiment involved in the present invention is described.

(first embodiment)

The body oscillating control setup of this embodiment is loaded on the four-wheel electric automobile of front wheel drive type, controls the car body bobbin movement through the moment of torsion that the braking CD-ROM drive motor as propulsion source is produced.Specifically, the body oscillating control setup of this embodiment is used to make control, the raising of steering response property and the inhibition of inclination campaign of wheel load change to become possibility.

(structure)

Fig. 1 is the concept map of summary structure of the vehicle of expression first embodiment.

As shown in Figure 1, vehicle 1 possesses steering angle sensor 2, acceleration pedal jaw opening sensor 3, brake pedal pedaling force sensor 4 and vehicle-wheel speed sensor 5.

Steering angle sensor 2 is configured on the Steering gear, detects the angle o of bearing circle 6.Then, steering angle sensor 2 will be represented the braking CD-ROM drive motor ECU 12 that states after the detection signal of testing result of the angle o of bearing circle 6 outputs to.

Acceleration pedal jaw opening sensor 3 is configured on the acceleration pedal, detects the acceleration pedal aperture.The acceleration pedal aperture is meant amount under the stepping on of acceleration pedal.And acceleration pedal jaw opening sensor 3 will represent that the detection signal of the testing result of acceleration pedal aperture outputs to braking CD-ROM drive motor ECU 12.

Brake pedal pedaling force sensor 4 is configured on the brake pedal, detects the legpower of brake pedal.And brake pedal pedaling force sensor 4 will represent that the detection signal of testing result of the legpower of brake pedal outputs to braking CD-ROM drive motor ECU 12.

It is last that vehicle-wheel speed sensor 5 is configured in each wheel 5FL～5RR, detects wheel velocity VwFL～VwRR of each wheel 5FL～5RR.And vehicle-wheel speed sensor 5 will represent that the detection signal of wheel velocity VwFL～VwRR of wheel 5FL～5RR outputs to braking CD-ROM drive motor ECU 12.

In addition, vehicle 1 possesses inverter 7, braking CD-ROM drive motor 8 and variable-speed motor 9.At this, the moment of torsion extra cell 100 that inverter 7, braking CD-ROM drive motor 8, variable-speed motor 9 are stated after constituting.

The electric power that inverter 7 is accumulated battery 10 according to the instruction of being exported by braking CD-ROM drive motor ECU 12 supplies to braking CD-ROM drive motor 8.Electric power to battery 10 carries out the DC-AC conversion, utilizes the alternating current that obtains through conversion to carry out the electric power of braking CD-ROM drive motor 8 is supplied with.

Braking CD-ROM drive motor 8 correspondingly produces moment of torsion with the electric power that inverter 7 is supplied with.Then, braking CD-ROM drive motor 8 outputs to variable-speed motor 9 with the moment of torsion that is produced.

Variable-speed motor 9 is configured on the axle drive shaft (drive shaft) 11 that is arranged at front-wheel (drive wheel) 5FL, 5FR respectively, and the moment of torsion that braking CD-ROM drive motor 8 is exported is additional to front-wheel 5FL, 5FR.

And vehicle 1 possesses braking CD-ROM drive motor ECU 12.At this, the motion estimation unit of stating after braking CD-ROM drive motor ECU 12 constitutes 101, motion-estimation step, inhibition torque control unit 102, inhibition torque control step, growth encourage torque control unit 103, growth encourage torque control step.

Braking CD-ROM drive motor ECU 12 is made up of microprocessor.Microprocessor possesses the IC that is made up of A/D translation circuit, D/A translation circuit, central arithmetic processing apparatus and memory device etc.And, the program that braking CD-ROM drive motor ECU 12 preserves according to memory device, the detection signal of being exported based on each sensor 2～5 calculates the moment of torsion that will make 8 outputs of braking CD-ROM drive motor, and the instruction of the moment of torsion that calculates making output outputs to inverter 7.

Fig. 3 is the block diagram of the structure of the performed program of expression microprocessor.

Braking CD-ROM drive motor ECU 12 utilizes the performed program of microprocessor to come the control block diagram of pie graph 3.This control block diagram possesses actuator requirement torque calculation unit 13, adder calculator 14, torque command value operational part 15 and propulsive effort car body vibration-damping control unit 16.At this, actuator requires torque calculation unit 13 to constitute motion estimation unit 101 and motion-estimation step.In addition, adder calculator 14 constitutes inhibition torque control unit 102, suppresses the torque control step, encourages torque control unit 103, encourages the torque control step.And propulsive effort car body vibration-damping control unit 16 constitutes motion estimation unit 101, motion-estimation step, inhibition torque control unit 102, suppresses the torque control step, encourages torque control unit 103, encourages the torque control step.

The detection signal that actuator requires detection signal that torque calculation unit 13 exported according to acceleration pedal jaw opening sensor 3 and brake pedal pedaling force sensor 4 to be exported calculates actuator and requires moment of torsion.Actuator requires moment of torsion to be meant the output torque that chaufeur requires braking CD-ROM drive motor 8.Actuator require moment of torsion with the torque rating in the S. A. of braking CD-ROM drive motor 8, be that the motor end value is represented.Then, actuator requires torque calculation unit 13 to require moment of torsion to output to adder calculator 14 and propulsive effort car body vibration-damping control unit 16 actuator that calculates.

In addition, in this embodiment, show the detection signal that the detection signal exported according to acceleration pedal jaw opening sensor 3 and brake pedal pedaling force sensor 4 exported and calculate the example that actuator requires moment of torsion, but also can adopt other structure.For example, also can constitute the detected value itself that will speed up various sensors such as pedal jaw opening sensor 3 is made as actuator and requires moment of torsion.

The actuator torque correction value addition that the actuator that adder calculator 14 is exported actuator requirement torque calculation unit 13 requires moment of torsion and propulsive effort car body vibration-damping control unit 16 to be exported.Come thus actuator requirement moment of torsion is proofreaied and correct.Actuator torque correction value is meant the compensation value that as the back is said, is calculated by propulsive effort car body vibration-damping control unit 16 according to actuator requirement moment of torsion, wheel velocity VwFL～VwRR and angle o.Then, actuator requires the actuator after torque calculation unit 13 will be proofreaied and correct to require moment of torsion after proofreading and correct, to require moment of torsion to output to torque command value operational part 15.

Vehicle dynamic control), TCS (Traction Control System: anti-slip regulation) wait the output of other system to calculate the moment of torsion that will make 8 outputs of braking CD-ROM drive motor require moment of torsion and VDC (Vehicle Dynamics Control: after the correction that torque command value operational part 15 is exported according to adder calculator 14.Then, torque command value operational part 15 outputs to inverter 7 with the moment of torsion that calculates as the torque command value.

Fig. 2 is the block diagram of functional structure of the vehicle of expression first embodiment.

As shown in Figure 2, this block diagram possesses moment of torsion extra cell 100, motion estimation unit 101, suppresses torque control unit 102 and encourages torque control unit 103.

100 pairs of wheel additional drives of moment of torsion extra cell moment of torsion.In addition; Moment of torsion extra cell 100 calculate by after the multiplication result that calculates of the inhibition multiplying value calculating unit 105 stated and by after the aggregate value of the multiplication result that calculates of the growth encourage multiplying value calculating unit 107 stated, control the driving torque that this moment of torsion extra cell 100 will add according to the aggregate value that calculates.

Motion estimation unit 101 requires driving torque, puts on the road surface interference of wheel from the road surface and through turning to the turning resistance that puts on wheel, estimates the car body bobbin movement according to chaufeur.Then, motion estimation unit 101 outputs to the estimated result of car body bobbin movement inhibition torque control unit 102 and encourages torque control unit 103.

Suppressing driving torque that torque control unit 102 will add moment of torsion extra cell 100 is controlled to be being derived from the change of the composition that requires driving torque in the composition that constitutes the car body bobbin movement that is estimated by motion estimation unit 101 and being derived from the direction that the change of the composition that disturbs on the road surface suppresses.Specifically, suppressing torque control unit 102 possesses the torque arithmetic unit of inhibition 104 and suppresses multiplying value calculating unit 105.Suppress torque arithmetic unit 104 and calculate driving torque that the change that is derived from the composition that requires driving torque is suppressed and the driving torque that the change that is derived from the composition that disturbs on the road surface is suppressed.Suppressing multiplying value calculating unit 105 makes by suppressing driving torque that the change to being derived from the composition that requires driving torque that torque arithmetic unit 104 calculates suppresses and the driving torque that the change that is derived from the composition that disturbs on the road surface is suppressed and multiplies each other with tuning gain (tuning gain) respectively.At this, the tuning gain of multiplying each other with them be made as on the occasion of.Then, suppress multiplying value calculating unit 105 multiplication result is outputed to moment of torsion extra cell 100.

The driving torque that growth encourage torque control unit 103 will add moment of torsion extra cell 100 is controlled to be the direction that the change that is derived from the composition of turning resistance in the composition that constitutes the car body bobbin movement that is estimated by motion estimation unit 101 is encouraged.Specifically, encouraging torque control unit 103 possesses the torque arithmetic unit of growth encourage 106 and encourages multiplying value calculating unit 107.Encourage torque arithmetic unit 106 and calculate the driving torque that the change to the composition that is derived from turning resistance suppresses.Encouraging multiplying value calculating unit 107 multiplies each other the driving torque and the tuning gain that are suppressed by the change to the composition that is derived from turning resistance that encourages that torque arithmetic unit 106 calculates.At this, the tuning gain that the driving torque that suppresses with change to the composition that is derived from turning resistance multiplies each other is made as negative value.Then, encourage multiplying value calculating unit 107 multiplication result is outputed to moment of torsion extra cell 100.

Fig. 4 is the block diagram of the structure of expression propulsive effort car body vibration-damping control unit 16.

Fig. 5 is the diagram of circuit of the action of expression propulsive effort car body vibration-damping control unit 16.

As shown in Figure 4, propulsive effort car body vibration-damping control unit 16 possesses input transformation component 17, body oscillating estimating section 18 and torque command value calculating part 19.At this, input transformation component 17 constitutes motion estimation unit 101, motion-estimation step.In addition, body oscillating estimating section 18 constitutes motion estimation unit 101 and motion-estimation step.And torque command value calculating part 19 constitutes growth encourage torque control unit 103 and torque control step.

Input transformation component 17 will be the input form of the auto model 26 of use in body oscillating estimating section 18 by the represented information conversion of detection signal of steering angle sensor 2, acceleration pedal jaw opening sensor 3, brake pedal pedaling force sensor 4 and vehicle-wheel speed sensor 5 outputs.Specifically, input transformation component 17 possesses driving torque transformation component 20, suspension travel calculating part 21, force transformation portion 22, body speed of vehicle estimating section 23, turning motion estimating section 24 and turning resistance estimating section 25 up and down.At this, force transformation portion 22 constitutes motion estimation unit 101 and motion-estimation step with turning resistance estimating section 25 up and down.

The actuator that driving torque transformation component 20 reads by 13 outputs of actuator requirement torque calculation unit requires moment of torsion (the step S101 of Fig. 5).Then, driving torque transformation component 20 makes the actuator that is read require the moment of torsion and the gear ratio of variable-speed motor 9 to multiply each other.Thus, actuator being required moment of torsion is axle drive shaft end value (the step S102 of Fig. 5) from the motor-end value transform.At this, the axle drive shaft end value is meant the torque rating among front-wheel 5FL, the 5FR.Then, driving torque transformation component 20 outputs to body oscillating estimating section 18 with multiplication result as driving torque Tw.At this, driving torque Tw is the axle drive shaft end value that requires driving torque of finger actuator requirement moment of torsion.

Fig. 6 is the block diagram of the structure of expression suspension travel calculating part 21.

Fig. 7 is the diagram of circuit of the action of expression suspension travel calculating part 21.

The detection signal that suspension travel calculating part 21 is exported according to vehicle-wheel speed sensor 5, promptly represent that the detection signal of wheel velocity VwFL～VwRR calculates the path increment Zf of the suspension of front and back wheel 5FL～5FR, Zr and travel speed dZf, dZr.Specifically; As shown in Figure 6, suspension travel calculating part 21 possess average front wheel speed operational part 34, average rear wheel speed operational part 35, front-wheel with bandpass filtering treatment portion 36, trailing wheel with bandpass filtering treatment portion 37, front-wheel suspension travel calculating part 38 and Rear wheel suspension stroke calculating part 39.

Average front wheel speed operational part 34 reads the detection signal (the step S103 of Fig. 5, the step S201 of Fig. 7) by vehicle-wheel speed sensor 5 outputs of front-wheel 5FL, 5FR.Then, average front wheel speed operational part 34 calculates average front wheel speed VwF=(VwFL+VwFR)/2 (the step S202 of Fig. 7) according to the detection signal that reads out.Then, average front wheel speed operational part 34 outputs to front-wheel with bandpass filtering treatment portion 36 with the average front wheel speed VwF that calculates.

Average rear wheel speed operational part 35 reads the detection signal (the step S103 of Fig. 5, the step S201 of Fig. 7) by vehicle-wheel speed sensor 5 outputs of trailing wheel 5RL, 5RR.Then, average rear wheel speed operational part 35 calculates average rear wheel speed VwR=(VwRL+VwRR)/2 (the step S202 of Fig. 7) according to the trailing wheel speed VwRL, the VwRR that read out.Then, average rear wheel speed operational part 35 outputs to trailing wheel with bandpass filtering treatment portion 37 with the average rear wheel speed VwR that calculates.

Front-wheel only extracts near the composition the car body resonant frequency with bandpass filtering treatment portion 36 from the average front wheel speed VwF by average front wheel speed operational part 34 output.Then, front-wheel outputs to front-wheel suspension travel calculating part 38 and Rear wheel suspension stroke calculating part 39 (the step S203 of Fig. 7) with bandpass filtering treatment portion 36 with near the vibration component fVwF car body resonant frequency that extracts.

Trailing wheel only extracts near the composition the car body resonant frequency with bandpass filtering treatment portion 37 from the average rear wheel speed VwR by average rear wheel speed operational part 35 output.Then, trailing wheel outputs to front-wheel suspension travel calculating part 38 and Rear wheel suspension stroke calculating part 39 (the step S203 of Fig. 7) with bandpass filtering treatment portion 37 with near the vibration component fVwR car body resonant frequency that extracts.

Like this, in this embodiment, from average front wheel speed VwF and average rear wheel speed VwR, only extract ingredient f VwF, fVwR near the car body resonant frequency.Thereby, can the wheel velocity change, the noise contribution that caused by vehicle 1 single-piece acceleration and deceleration be removed from average front wheel speed VwF and average rear wheel speed VwR, thereby can only extract the wheel velocity composition of representing body oscillating.

Fig. 8 is the figure of method of calculating that is used to explain the path increment of suspension.

Fig. 9 is the coordinate diagram of expression front wheel suspension geometrical property.

Figure 10 is the coordinate diagram of expression rear wheel suspension geometrical property.

Front-wheel suspension travel calculating part 38 calculates the fore-and-aft direction displacement Xtf of front-wheel 5FL, 5FR according near the vibration component fVwF car body resonant frequency that is extracted with bandpass filtering treatment portion 36 by front-wheel.Then, the fore-and-aft direction displacement Xtf that calculates of 38 pairs of front-wheel suspension travel calculating parts carries out time diffusion and comes differential value dXtf computing time.Then, front-wheel suspension travel calculating part 38 calculates the path increment Zf and the travel speed dZf (the step S204 of Fig. 7) of suspension according to the fore-and-aft direction displacement Xtf and the time diffusion value dXtf that calculate according to following (1) (2) formula.Then, front-wheel suspension travel calculating part 38 outputs to force transformation portion 22 up and down with result of calculation.

Zf＝KgeoF·Xtf …(1)

dZf＝KgeoF·dXtf …(2)

At this, KgeoF is near the slope the initial point of coordinate diagram of front wheel suspension geometrical property of presentation graphs 9.Transverse axis is represented the fore-and-aft direction displacement Xtf of front-wheel 5FL, 5FR among Fig. 9, and the longitudinal axis is illustrated in the upper and lower displacement Zf of the car body of front-wheel 5FL, 5FR top, and the coordinate diagram of Fig. 9 is the coordinate diagram of the relation between the upper and lower displacement Zf of expression fore-and-aft direction displacement Xtf and car body.

Rear wheel suspension stroke calculating part 39 calculates the fore-and-aft direction displacement Xtr of trailing wheel 5RL, 5RR according near the vibration component fVwR car body resonant frequency that is extracted with bandpass filtering treatment portion 37 by trailing wheel.Then, the fore-and-aft direction displacement Xtr that calculates of 39 pairs of Rear wheel suspension stroke calculating parts carries out time diffusion and comes differential value dXtr computing time.Then, Rear wheel suspension stroke calculating part 39 calculates the path increment Zr and the travel speed dZr of suspension according to the fore-and-aft direction displacement Xtr and the time diffusion value dXtr that calculate according to following (3) (4) formula.Then, Rear wheel suspension stroke calculating part 39 outputs to force transformation portion 22 up and down with result of calculation.

Zr＝KgeoR·Xtr …(3)

dZr＝KgeoR·dXtr …(4)

At this, KgeoR is near the slope the initial point of coordinate diagram of rear wheel suspension geometrical property of expression Figure 10.Transverse axis is represented the fore-and-aft direction displacement Xtr of trailing wheel 5RL, 5RR among Figure 10; The longitudinal axis is illustrated in the upper and lower displacement Zr of the car body of trailing wheel 5RL, 5RR top, and the coordinate diagram of Figure 10 is the coordinate diagram of the relation between the upper and lower displacement Zr of expression fore-and-aft direction displacement Xtr and car body.

Turn back to Fig. 4, path increment Zf and spring constant Kf by 21 outputs of suspension travel calculating part are multiplied each other in the portion of force transformation up and down 22 that constitutes motion estimation unit 101, and travel speed dZf and extinguishing coefficient Cf by 21 outputs of suspension travel calculating part are multiplied each other.At this, spring constant Kf is meant the spring constant of the suspension of front-wheel 5FL, 5FR.In addition, extinguishing coefficient Cf is meant the extinguishing coefficient of the suspension (bumper) of front-wheel 5FL, 5FR.Then, force transformation portion 22 outputs to body oscillating estimating section 18 (the step S105 of Fig. 5) with the aggregate value of these multiplication results as the Fzf that exerts oneself on front-wheel 5FL, the 5FR up and down.At this, on exert oneself to be meant owing to the external force that puts on car body is disturbed on the road surface that puts on wheel 5FL～5RR from the road surface.

In addition, path increment Zr and spring constant Kr by 21 outputs of suspension travel calculating part are multiplied each other in force transformation portion 22 up and down, and travel speed dZr and extinguishing coefficient Cr by 21 outputs of suspension travel calculating part are multiplied each other.At this, spring constant Kr is meant the spring constant of the suspension of trailing wheel 5RL, 5RR.In addition, extinguishing coefficient Cr is meant the extinguishing coefficient of the suspension (bumper) of trailing wheel 5RL, 5RR.Then, force transformation portion 22 outputs to body oscillating estimating section 18 (the step S105 of Fig. 5) with the aggregate value of these multiplication results as the Fzr that exerts oneself on trailing wheel 5RL, the 5RR up and down.

In addition; In this embodiment; Show following example: path increment and travel speed according to wheel velocity VwFL～VwRR calculates suspension, calculate the Fzf that exerts oneself, Fzr according to path increment that calculates and travel speed, but also can adopt other structure.For example, also can constitute the stroke sensor that the path increment that detects suspension is set, calculate the Fzf that exerts oneself, Fzr according to the detected value of the path increment that obtains by stroke sensor and the time diffusion value of testing result.The detected value itself that can also constitute various sensors such as stroke sensors in addition, is made as the Fzf that exerts oneself, Fzr.

Body speed of vehicle estimating section 23 reads the detection signal by vehicle-wheel speed sensor 5 outputs of trailing wheel 5RL, 5RR (flower wheel).Then, average rear wheel speed operational part 35 calculates body speed of vehicle V=(VwRL+VwRR)/2 according to the detection signal that reads out.Then, body speed of vehicle estimating section 23 outputs to turning motion estimating section 24 with the body speed of vehicle V that calculates.

Turning motion estimating section 24 is calculated yaw velocity γ and the horizontal angle of slide β of car body v according to by the detection signal of body speed of vehicle estimating section 23 outputs and the detection signal of being exported by steering angle sensor 2 according to following (5) (6) formula.Then, turning motion estimating section 24 outputs to turning resistance estimating section 25 with yaw velocity γ that calculates and the horizontal angle of slide β of car body v.In addition, the turning motion estimating section 24 angle o that the detection signal of steering angle sensor 2 is represented also exports with these result of calculations.

[several 1]

$\mathrm{\&gamma;}=\left(\frac{1}{1-\frac{m}{L^2}\frac{L_f{\mathrm{Cp}}_f-L_r{\mathrm{Cp}}_r}{{\mathrm{Cp}}_f{\mathrm{Cp}}_r}{V}^2}\right)\frac{V}{L}\mathrm{\&delta;}\&CenterDot;\&CenterDot;\&CenterDot;\left(5\right)$

${\mathrm{\&beta;}}_V=\left(\frac{1-\frac{m}{L}\frac{L_f}{L_r{\mathrm{Cp}}_r}{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000143427700000011.png,HDA0000143427700000151.png"\; state="\{\{state\}\}">V</figure-callout>}}^2}{1-\frac{m}{L^2}\frac{L_f{\mathrm{Cp}}_f-L_r{\mathrm{Cp}}_r}{{\mathrm{Cp}}_f{\mathrm{Cp}}_r}{V}^2}\right)\frac{l_r}{L}\mathrm{\&delta;}\&CenterDot;\&CenterDot;\&CenterDot;\left(6\right)$

At this, δ is the tire hub angle that calculates according to angle o, and L is a wheelbase, and Lf is the distance of body gravity to front axle, and Lr is the distance of body gravity to back axle, and m is a car weight.In addition, Cpf is the tyre side drag of front-wheel 5FL, 5FR, and Cpr is the tyre side drag of trailing wheel 5RL, 5RR.

The turning resistance estimating section 25 that constitutes motion estimation unit 101 is calculated the turning resistance Fcf of front-wheel 5FL, 5FR according to yaw velocity γ, car body horizontal angle of slide β v and angle o by 24 outputs of turning motion estimating section according to following (7) formula.At this, turning resistance Fcf is meant the resistance that puts on wheel 5FL～5RR from the road surface through turning to, and is owing to producing the vehicle fore-and-aft direction composition that angle of side slip puts on the transversal force of wheel 5FL～5RR.Then, turning resistance estimating section 25 outputs to auto model 26 with the turning resistance Fcf that calculates.

Fcf＝βf·Fyf …(7)

Bf＝βv+Lf·γ/V-δ

Fyf＝βf·Cpf

At this, β f is the angle of side slip of front-wheel 5FL, 5FR, and Fyf is the lateral deviation power of front-wheel 5FL, 5FR.

In addition, turning resistance estimating section 25 is calculated the turning resistance Fcr of trailing wheel 5RL, 5RR according to yaw velocity γ, car body horizontal angle of slide β v and angle o by 24 outputs of turning motion estimating section according to following (8) formula.Then, turning resistance estimating section 25 outputs to auto model 26 with the turning resistance Fcr that calculates.

Fcr＝βr·Fyr …(8)

Br＝βv-Lr·γ/V

Fyr＝βr·Cpr

At this, β r is the angle of side slip of trailing wheel 5RL, 5RR, and Fyr is the lateral deviation power of trailing wheel 5RL, 5RR.

In addition, in this embodiment, show according to body speed of vehicle V and angle o and calculate the example of turning resistance Fcf, Fcr, but also can adopt other structure.The detected value itself that for example, also can constitute various sensors such as steering angle sensors 2 is made as turning resistance Fcf, Fcr.

The body oscillating estimating section 18 that constitutes motion estimation unit 101 according to by the driving torque Tw of input transformation component 17 outputs, on exert oneself Fzf, Fzr and turning resistance Fcf, Fcr calculate the composition that constitutes the car body bobbin movement.Specifically, body oscillating estimating section 18 possesses auto model 26.At this, auto model 26 constitutes motion estimation unit 101 and motion-estimation step.

Figure 11 is the figure that is used to explain auto model 26.

The auto model 26 that constitutes motion estimation unit 101 calculates the composition that is derived from driving torque Tw in the composition that constitutes the car body bobbin movement, the composition that is derived from the composition of the Fzf that exerts oneself, Fzr and is derived from turning resistance Fcf, Fcr.That is, the car body bobbin movement can represent with various physical quantitys, and in addition, when these various physical quantitys comprised various composition respectively, above-mentioned three compositions of auto model 26 in will these various compositions calculated one by one.At this, can adopt the up-and-down movement around the direction that rotatablely moves and upspring of pitch axis of car body to be used as the car body bobbin movement.In addition, can adopt the speed of upspringing dZv, the amount of upspringing Zv, rate of pitch dSp and the pitch angle Sp of car body to be used as representing the physical quantity of car body bobbin movement.These physical quantitys dZv, Zv, dSp, Sp be as following (9) (10) formula to front-wheel load Wf and the trailing wheel Wr required parameter when defining of loading.

Wf＝-2Kf(Zv+Lf·θp)-2Cf(dZv+Lf·dθp/dt) …(9)

Wr＝-2Kr(Zv+Lr·θp)-2Cr(dZv-Lr·dθp/dt) …(10)

Specifically, auto model 26 calculates the ingredient d Zv1 that is derived from driving torque Tw, Zv1, dSp1, Sp1 in the composition that constitutes the car body bobbin movement according to the driving torque Tw by 20 outputs of driving torque transformation component.Fzf, Fzr, Fcf, Fcr are made as " 0 ", are derived from ingredient d Zv1, Zv1, the dSp1 of driving torque Tw, the calculating (the step S112 of Fig. 5) of Sp1 according to following (11) (12) formula.Then, auto model 26 outputs to torque command value calculating part 19 with the ingredient d Zv1 that calculates, Zv1, dSp1, Sp1.

[several 2]

$m\&CenterDot;{\stackrel{\&CenterDot;\&CenterDot;}{z}}_v=F_{\mathrm{zf}}+F_{\mathrm{zr}}-2K_f(z_v+L_f\&CenterDot;{\mathrm{\&theta;}}_p)-2C_f({\stackrel{\&CenterDot;}{z}}_v+L_f\&CenterDot;{\stackrel{\&CenterDot;}{\mathrm{\&theta;}}}_p)-{2K}_r(z_v-L_r\&CenterDot;{\mathrm{\&theta;}}_p)-2C_r({\stackrel{\&CenterDot;}{z}}_v-L_r\&CenterDot;{\stackrel{\&CenterDot;}{\mathrm{\&theta;}}}_p)\&CenterDot;\&CenterDot;\&CenterDot;\left(11\right)$

$I_p\&CenterDot;{\stackrel{\&CenterDot;\&CenterDot;}{\mathrm{\&theta;}}}_p=F_{\mathrm{zf}}\&CenterDot;L_f-F_{\mathrm{zr}}\&CenterDot;L_r-(F_{\mathrm{cf}}+F_{\mathrm{cr}})\&CenterDot;(\mathrm{hcg}-\mathrm{Rt})$

$-2L_f\{K_f(z_v+L_f\&CenterDot;{\mathrm{\&theta;}}_p)+C_f({\stackrel{\&CenterDot;}{z}}_v+L_f\&CenterDot;{\stackrel{\&CenterDot;}{\mathrm{\&theta;}}}_p)\}+2L_r\{K_r(z_v-L_r\&CenterDot;{\mathrm{\&theta;}}_p)+C_r({\stackrel{\&CenterDot;}{z}}_v-L_r\&CenterDot;{\stackrel{\&CenterDot;}{\mathrm{\&theta;}}}_p)\}+T_W\&CenterDot;\&CenterDot;\&CenterDot;\left(12\right)$

At this, shown in figure 11, Ip is the moment of inertia around pitch axis, and hcg is the height of body gravity, and Rt is the height of wheel center of gravity, and θ p is a pitch angle.

In addition, auto model 26 is according to calculating the ingredient d Zv2 that is derived from the Fzf that exerts oneself, Fzr, Zv2, dSp2, Sp2 in the composition that constitutes the car body bobbin movement by the Fzf that exerts oneself in force transformation portion 22 outputs up and down, Fzr.Tw, Fcf, Fcr are made as " 0 ", are derived from ingredient d Zv2, Zv2, the dSp2 of the Fzf that exerts oneself, Fzr, the calculating (the step S112 of Fig. 5) of Sp2 according to above-mentioned (11) (12) formula.Then, auto model 26 outputs to torque command value calculating part 19 with the ingredient d Zv2 that calculates, Zv2, dSp2, Sp2.

In addition, in this embodiment, show and from the composition that constitutes the car body bobbin movement, calculate composition that is derived from driving torque Tw and the example that is derived from the composition of the Fzf that exerts oneself, Fzr, but also can adopt other structure.For example; Also can constitute following structure: in the composition of at least one from the speed of the upspringing dZv, the amount of upspringing Zv, rate of pitch dSp and the pitch angle Sp that constitute car body or their composite value, calculate composition that is derived from driving torque Tw and the composition that is derived from the Fzf that exerts oneself, Fzr.As composite value, for example can adopt make car body the speed of upspringing dZv, the amount of upspringing Zv, rate of pitch dSp and pitch angle Sp respectively with multiplication, multiplication result is added together and value of obtaining etc.

In addition, auto model 26 calculates the ingredient d Zv3 that is derived from turning resistance Fcf, Fcr, Zv3, dSp3, Sp3 in the composition that constitutes the car body bobbin movement according to turning resistance Fcf, Fcr by 25 outputs of turning resistance estimating section.Tw, Fzf, Fzr are made as " 0 ", are derived from ingredient d Zv3, Zv3, the dSp3 of turning resistance Fcf, Fcr, the calculating (the step S112 of Fig. 5) of Sp3 according to above-mentioned (11) (12) formula.Then, auto model 26 calculates the ingredient d Wf3 that is derived from turning resistance Fcf, Fcr, dWr3, dSF3, the SF3 in the composition that constitutes the car body bobbin movement according to the ingredient d Zv3, Zv3, dSp3, the Sp3 that calculate.DWf is the change speed of front-wheel load, and dWr is the change speed of trailing wheel load, and dSF is the change speed of anterior-posterior balance, and SF is an anterior-posterior balance.Be derived from ingredient d Wf3, dWr3, the dSF3 of turning resistance Fcf, Fcr, the calculating of SF3 according to above-mentioned (9) (10) formula.Then, auto model 26 outputs to torque command value calculating part 19 with the ingredient d Wf3 that calculates, dWr3, dSF3, SF3.

In addition, in this embodiment, show the example that calculates the composition that is derived from turning resistance Fcf, Fcr in the composition that constitutes the car body bobbin movement, but also can adopt other structure.For example; Also can constitute following structure: in the composition of at least one from the change speed dWf, rate of pitch dSp and the pitch angle Sp that constitute front-wheel load Wf, front-wheel load or their composite value, calculate the composition that is derived from turning resistance Fcf, Fcr and be derived from the composition of the Fzf that exerts oneself, Fzr.As composite value, for example can adopt make front-wheel load Wf, front-wheel load change speed dWf, rate of pitch dSp and pitch angle Sp respectively with multiplication, multiplication result is added together and the value that obtains etc.

Figure 12 is the instruction diagram that is used to explain the action of torque command value calculating part 19.

Figure 13 is the instruction diagram that is used to explain the direction initialization of tuning gain.

Constitute the torque command value calculating part 19 that encourages torque control unit 103 and assign to calculate actuator torque correction value according to the one-tenth of exporting by body oscillating estimating section 18 that constitutes the car body bobbin movement.Specifically, torque command value calculating part 19 possesses first regulating control 27, second regulating control 28, the 3rd regulating control 29, first tuning gain multiplied operational part 30, second tuning gain multiplied operational part the 31, the 3rd tuning gain multiplied operational part 32 and the motor torsional moment transformation component 33.At this, first regulating control 27 and second regulating control 28 constitute inhibition torque control unit 102, suppress the torque control step, suppress torque arithmetic unit 104.In addition, the 3rd regulating control 29 constitutes growth encourage torque control unit 103, encourages the torque control step, encourages torque arithmetic unit 106.And the first tuning gain multiplied operational part 30 and the second tuning gain multiplied operational part 31 constitute inhibition torque control unit 102, suppress the torque control step, suppress multiplying value calculating unit 105.In addition, the 3rd tuning gain multiplied operational part 32 constitutes growth encourage torque control unit 103, encourages the torque control step, encourages multiplying value calculating unit 107.And motor torsional moment transformation component 33 constitutes moment of torsion extra cell 100.

Shown in figure 12, first regulating control 27 will be multiplied each other with " 1 " as quantity of state x (=[dZv1, Zv1, dSp1, Sp1]) and controller gain F1 by the ingredient d Zv1 that is derived from driving torque Tw, Zv1, dSp1, the Sp1 of auto model 26 outputs.At this, controller gain F1 is meant that calculating sends as an envoy to converges to the gain of the driving torque of " 0 " as the rate of pitch dSp1 that is derived from the composition of driving torque Tw through multiplying each other with quantity of state x.For example set controller gain F1 according to following (13) (14) formula.

F1＝R-1BTP …(13)

[several 3]

$J={\&Integral;}_o^{\&infin;}[x^T\left(t\right)\mathrm{Qx}\left(t\right)+u^T\left(t\right)\mathrm{Ru}\left(t\right)]\mathrm{dt}\&CenterDot;\&CenterDot;\&CenterDot;\left(14\right)$

x＝[dZv?Zv?dSp?Sp] u＝[Tw?Fzf?Fzr?Fcf?Fcr]

$Q=\left[\begin{array}{cccc}\mathrm{<figure-callout\; id="0"\; label="q"\; filenames="HDA0000143427700000201.png,HDA0000143427700000221.png"\; state="\{\{state\}\}">q</figure-callout>}& 0& 0& 0\\ 0& 0& 0& 0\\ 0& 0& 0& 0\\ 0& 0& 0& 0\end{array}\right]$ $R=\left[\begin{array}{ccccc}1& 0& 0& 0& 0\\ 0& \mathrm{<figure-callout\; id="0"\; label="r"\; filenames="HDA0000143427700000201.png,HDA0000143427700000221.png"\; state="\{\{state\}\}">r</figure-callout>}& 0& 0& 0\\ 0& 0& \mathrm{<figure-callout\; id="0"\; label="r"\; filenames="HDA0000143427700000201.png,HDA0000143427700000221.png"\; state="\{\{state\}\}">r</figure-callout>}& 0& 0\\ 0& 0& 0& \mathrm{<figure-callout\; id="0"\; label="r"\; filenames="HDA0000143427700000201.png,HDA0000143427700000221.png"\; state="\{\{state\}\}">r</figure-callout>}& 0\\ 0& 0& 0& 0& r\end{array}\right]$

At this, above-mentioned (13) formula is the calculating formula of the controller gain F1 of Optimal Regulator that the change of rate of pitch dSp1 as the composition that is derived from driving torque Tw is suppressed.In addition, in above-mentioned (14) formula, J is the evaluation function of the quadric form in the Optimal Regulator, and P is as Li Kadi (Riccati) algebraic equation PA+A ^TP-PBR ^-1B ^TThe positive definite symmetric matrices of separating of P+Q=0.In addition, following controller gain F2 also sets according to same numerical expression.Thus; First regulating control 27 calculates proofreaies and correct the compensation value that (control) is the direction that suppresses of the change to rate of pitch dSp1 with driving torque; Wherein, this rate of pitch dSp1 is the composition that is derived from driving torque Tw that constitutes in the composition of car body bobbin movement.Then, first regulating control 27 outputs to the first tuning gain multiplied operational part 30 with result of calculation as the control command value A of driving torque.

Second regulating control 28 will be multiplied each other with " 1 " as quantity of state x (=[dZv2, Zv2, dSp2, Sp2]) and controller gain F2 by the ingredient d Zv2 that is derived from the Fzf that exerts oneself, Fzr, Zv2, dSp2, the Sp2 of auto model 26 outputs.At this, controller gain F2 is meant that calculating sends as an envoy to converges to the gain of the driving torque of " 0 " as the pitch angle Sp2 that is derived from the composition of the Fzf that exerts oneself, Fzr through multiplying each other with quantity of state x.Thus, second regulating control 28 calculates the compensation value of driving torque being proofreaied and correct the direction that (control) suppress for the change to pitch angle Sp2, and wherein, this pitch angle Sp2 is the composition that is derived from the Fzf that exerts oneself, Fzr in the composition of formation car body bobbin movement.Then, second regulating control 28 outputs to the second tuning gain multiplied operational part 31 with result of calculation as the control command value B of driving torque.

The 3rd regulating control 29 will be multiplied each other with " 1 " as quantity of state Cx (=[dWf3, dWr3, dSF3, SF3]) and controller gain F3 by the ingredient d Wf3 that is derived from turning resistance Fcf, Fcr, dWr3, dSF3, the SF3 of auto model 26 outputs.At this, controller gain F3 is meant that calculating sends as an envoy to converges to the gain of the driving torque of " 0 " as the change speed dWf3 of the front-wheel load of the composition that is derived from turning resistance Fcf, Fcr through multiplying each other with quantity of state Cx.For example set controller gain F3 according to following (15) (16) formula.

F3＝R ^-1B ^TP …(15)

[several 4]

$J={\&Integral;}_o^{\&infin;}[x^T\left(t\right)C^T\mathrm{QCx}\left(t\right)+2x^T\left(t\right)C^T\mathrm{QDu}\left(t\right)+u^T\left(t\right)(D^T\mathrm{QD}+R)u\left(t\right)]\mathrm{dt}\&CenterDot;\&CenterDot;\&CenterDot;\left(16\right)$

Cx＝[dWf?dWr?dSF?SF]

$Q=\left[\begin{array}{cccc}\mathrm{<figure-callout\; id="0"\; label="q"\; filenames="HDA0000143427700000201.png,HDA0000143427700000221.png"\; state="\{\{state\}\}">q</figure-callout>}& 0& 0& 0\\ 0& 0& 0& 0\\ 0& 0& 0& 0\\ 0& 0& 0& 0\end{array}\right]$ $R=\left[\begin{array}{ccccc}1& 0& 0& 0& 0\\ 0& \mathrm{<figure-callout\; id="0"\; label="r"\; filenames="HDA0000143427700000201.png,HDA0000143427700000221.png"\; state="\{\{state\}\}">r</figure-callout>}& 0& 0& 0\\ 0& 0& \mathrm{<figure-callout\; id="0"\; label="r"\; filenames="HDA0000143427700000201.png,HDA0000143427700000221.png"\; state="\{\{state\}\}">r</figure-callout>}& 0& 0\\ 0& 0& 0& \mathrm{<figure-callout\; id="0"\; label="r"\; filenames="HDA0000143427700000201.png,HDA0000143427700000221.png"\; state="\{\{state\}\}">r</figure-callout>}& 0\\ 0& 0& 0& 0& r\end{array}\right]$

At this, above-mentioned (15) formula is the calculating formula of the controller gain F3 of Optimal Regulator that the change as the change speed dWf3 of the front-wheel load of the composition that is derived from turning resistance Fcf, Fcr is suppressed.In addition, in above-mentioned (16) formula, J is the evaluation function of the quadric form in the Optimal Regulator, and P is the positive definite symmetric matrices of separating as the Li Kadi algebraic equation.Thus; The 3rd regulating control 29 calculates the compensation value of driving torque being proofreaied and correct the direction that (control) suppress for the change of change speed dWf3 that front-wheel is loaded; Wherein, the change speed dWf3 of this front-wheel load is the composition that is derived from turning resistance Fcf, Fcr that constitutes in the composition of car body bobbin movement.Then, the 3rd regulating control 29 outputs to the 3rd tuning gain multiplied operational part 32 with result of calculation as the control command value C of driving torque.

In addition, in this embodiment, show, be that the change speed dWf3 that front-wheel is loaded comes the example of calculation control command value C, but also can adopt other structure according to quantity of state Cx.For example, also can constitute according to front-wheel load Wf etc. and come calculation control command value C with front-wheel 5FL, other relevant physical quantity of 5RL.In addition, can also constitute according to physical quantitys relevant such as rate of pitch dSp, luffing angle Sp and come calculation control command value C with the luffing of car body.

In addition, in this embodiment, show, be that the change speed dWf3 that front-wheel is loaded comes the example of calculation control command value C, but also can adopt other structure according to quantity of state Cx.For example, also can constitute according to the change acceleration/accel of front-wheel load Wf, front-wheel load etc. and come calculation control command value C with other relevant physical quantity of front-wheel load Wf.In addition, can also constitute according to physical quantitys relevant such as rate of pitch dSp, luffing angle Sp and come calculation control command value C with the luffing of car body.

The first tuning gain multiplied operational part 30 makes by the control command value A of first regulating control 27 output and tuning gain K1 multiply each other (the step S113 of Fig. 5).Then, the first tuning gain multiplied operational part 30 outputs to motor torsional moment transformation component 33 with multiplication result as Correction and Control command value K1A.At this; Braking CD-ROM drive motor ECU 12 can suppress the change of rate of pitch dSp1 the Calais through making actuator requirement moment of torsion and control command value A mutually, and this rate of pitch dSp1 is the composition that is derived from driving torque Tw in the composition of formation car body bobbin movement.Yet, in the method for the control command value A addition that only makes actuator requirement moment of torsion and driving torque, might make front and back acceleration/accel change and bring sense of discomfort to chaufeur.Thereby, shown in figure 13, tuning gain K1 be on the occasion of and be set at not the value of can be owing to the change of front and back acceleration/accel bringing the scope of sense of discomfort to chaufeur.Thus; The first tuning gain multiplied operational part 30 is preventing because the change of front and back acceleration/accel and when bringing sense of discomfort to chaufeur, even require the compensation value of moment of torsion to be adjusted into the repressed direction of change of the repressed direction wheel of the change that makes the composition that is derived from driving torque Tw load actuator.

Like this, in this embodiment, require the compensation value of moment of torsion to be adjusted into the direction that the change as the rate of pitch dSp1 of the composition that is derived from driving torque Tw is suppressed actuator.Thereby, the change of load can be suppressed to take turns, thereby ride quality can be improved.

Turn back to Fig. 4, the second tuning gain multiplied operational part 31 makes by the control command value B of second regulating control 28 output and tuning gain K2 multiply each other (the step S114 of Fig. 5).Then, the second tuning gain multiplied operational part 31 outputs to motor torsional moment transformation component 33 with multiplication result as Correction and Control command value K2B.At this; Braking CD-ROM drive motor ECU 12 can suppress the change of rate of pitch dSp2 the Calais through making actuator requirement moment of torsion and control command value B mutually, and this rate of pitch dSp2 is the composition that is derived from the Fzf that exerts oneself, Fzr in the composition of formation car body bobbin movement.Yet, only with the method for the control command value B addition of driving torque in, acceleration/accel change and bring sense of discomfort before and after might making to chaufeur.Thereby, shown in figure 13, tuning gain K2 be on the occasion of and be set at not the value of can be owing to the change of front and back acceleration/accel bringing the scope of sense of discomfort to chaufeur.Thus; Preventing because the change of front and back acceleration/accel and when bringing sense of discomfort the change that the second tuning gain multiplied operational part 31 requires actuator the compensation value of moment of torsion be adjusted into to make the composition that is derived from the Fzf that exerts oneself, Fzr, the i.e. repressed direction of change of wheel load to chaufeur.

Like this, in this embodiment, require the compensation value of moment of torsion to be adjusted into the direction that the change as the rate of pitch dSp2 of the composition of exert oneself on being derived from Fzf, Fzr is suppressed actuator.Thereby, the change of load can be suppressed to take turns, thereby ride quality can be improved.

Turn back to Fig. 4, the 3rd tuning gain multiplied operational part 32 makes by the control command value C of the 3rd regulating control 29 output and tuning gain K3 multiply each other (the step S115 of Fig. 5).Then, the 3rd tuning gain multiplied operational part 32 outputs to motor torsional moment transformation component 33 with multiplication result as Correction and Control command value K3C.At this; Braking CD-ROM drive motor ECU 12 can suppress the change of the change speed dWf3 of front-wheel load the Calais through making actuator requirement moment of torsion and control command value C mutually, and the change speed dWf3 of this front-wheel load is the composition that is derived from turning resistance Fcf, Fcr in the composition of formation car body bobbin movement.Yet, only with the method for the control command value C addition of driving torque in, acceleration/accel change and bring sense of discomfort before and after might making to chaufeur.In addition, when beginning steering operation, to the change of the change speed dWf3 of front-wheel load suppress to suppress to dive (nose-dive) motion, suppress the increase of front-wheel load Wf, the possibility that exists the side drag Cp of front-wheel 5FL, 5FR to reduce.Thereby the transversal force of front-wheel 5FL, 5FR reduces, and has the possibility of steering response property reduction.Therefore, tuning gain K3 is negative value and is set at not the value of can be owing to the change of front and back acceleration/accel bringing the scope of sense of discomfort to chaufeur.Thus; The 3rd tuning gain multiplied operational part 32 preventing because the change of front and back acceleration/accel and when bringing sense of discomfort to chaufeur, requires the compensation value of moment of torsion to be adjusted into the direction that the change to the composition that is derived from turning resistance Fcf, Fcr encourages actuator.

Like this, in this embodiment, require the compensation value of moment of torsion to be adjusted into the direction that the change as the change speed dWf3 of the front-wheel of the composition that is derived from turning resistance Fcf, Fcr load is encouraged actuator.Thereby, when beginning steering operation, driving torque can be reduced, thereby underriding (nose-dive) motion can be encouraged, can increase front-wheel load Wf.Thus,, can increase the side drag Cp of front-wheel 5FL, 5FR, can increase the transversal force of front-wheel 5FL, 5FR, can improve steering response property because front-wheel load Wf increases.In addition, owing in the change that suppresses the wheel load, improve steering response property, can improve the linearity of yaw velocity γ, promptly can improve the rectilinearity of output with respect to input.Thus, the variation of transverse acceleration can be relaxed, the inclination campaign can be suppressed.

Figure 14 is the instruction diagram that is used to explain the establishing method of Correction and Control command value K3C.

The inclination campaign is owing to the transverse acceleration that is accompanied by steering operation produces.That is, shown in Figure 14 (a), when chaufeur carries out steering operation, in front-wheel 5FL, 5FR, produce transversal force.When producing transversal force among front-wheel 5FL, the 5FR, car body produces transverse acceleration.When car body produces transverse acceleration, produce bank velocity.Thereby the time waveform of bank velocity has related with the time waveform of the time diffusion value of transverse acceleration.Therefore, if can reduce the time diffusion value of transverse acceleration, then can reduce the absolute value of the peak value of bank velocity.At this moment, if only reduce the time diffusion value of transverse acceleration, then transverse acceleration reduces, and yaw velocity reduces, so the reduction of steering response property.Thereby, if in the time diffusion value that reduces transverse acceleration, do sth. in advance timing, the i.e. rising of transverse acceleration ahead of time that transverse acceleration begins to increase, then can in the absolute value of the peak value that reduces bank velocity, improve steering response property.And; This transverse acceleration is realized through following action: begun at chaufeur under the situation of steering operation; After the beginning steering operation, the desired torque that before the bank velocity that produces owing to steering operation reaches peak value, will reduce driving torque is additional to front-wheel 5FL, 5FR.Like this, driving torque reduces, and front-wheel load Wf increases thus, and the side drag Cp of front-wheel 5FL, 5FR increases.Thereby the responsibility of yaw velocity γ increases, and the transversal force that puts on front-wheel 5FL, 5FR is in the timing increase of morning.In addition, because transversal force in the timing increase of morning, can reduce the time diffusion value of transverse acceleration.

At this, shown in Figure 14 (b), when producing transversal force owing to steering operation, turning resistance also produces with transverse acceleration.Thereby the time waveform of turning resistance has related with the time waveform of transverse acceleration.In addition, when producing turning resistance, rate of pitch produces.Thereby the time waveform of rate of pitch has related with the time waveform of the differential value of turning resistance.Therefore, according to the time waveform of the rate of pitch that is derived from turning resistance, be the time waveform of luffing, can prediction source from the time waveform that turns to the bank velocity of operation.In addition; If the variance components of the front-wheel load that is conceived to dope according to luffing, be the change speed dWf of front-wheel load, then it has begun under the situation of steering operation, after the beginning steering operation bank velocity because steering operation reaches the time waveform that peak value becomes the chevron that reaches peak value before at chaufeur.Can be made as negative value and become the characteristic same through changing positive and negative symbol with the time waveform of desired torque.Thereby; Multiply each other with controller gain F3 and " 1 " and multiplication result and tuning gain K3 (＜0) are multiplied each other through the quantity of state Cx that makes the change speed dWf that comprises front-wheel load, can calculate driving torque is proofreaied and correct the compensation value that (control) suppresses with the change to bank velocity.

The aggregate value that motor torsional moment transformation component 33 makes Correction and Control command value K1A, Correction and Control command value K2B and Correction and Control command value K3C multiplies each other with the gear ratio of variable-speed motor 9.Thus, be the motor end value with aggregate value from the drive shaft end value transform.Then, motor torsional moment transformation component 33 outputs to adder calculator 14 (the step S116 of Fig. 5) with multiplication result as actuator torque correction value.

(action)

Figure 15 is the instruction diagram of action that is used to explain the body oscillating control setup of first embodiment.In (a) of Figure 15, show the waveform of time series data of physical quantity of the action of expression first embodiment.In addition, in (b) of Figure 15, show the waveform of time series data of physical quantity of the action of expression comparative example.

The action of the vehicle 1 that has loaded the body oscillating control setup then, is described with reference to Figure 15.

At first, in the time of on travelling on expressway, chaufeur is in order vehicle 1 constant speed to be advanced go and the acceleration pedal aperture is fixed and bearing circle 6 is remained on origin position, shown in the moment t0 of Figure 15 (a), makes to turn to be input as " 0 ".Like this, as shown in Figure 3, the actuator of braking CD-ROM drive motor ECU 12 requires torque calculation unit 13 according to by the detection signal of acceleration pedal jaw opening sensor 3 outputs with calculate actuator by the detection signal of brake pedal pedaling force sensor 4 outputs and require moment of torsion.Then, actuator requires torque calculation unit 13 to require moment of torsion to output to adder calculator 14 and input transformation component 17 actuator that calculates.When actuator requires torque calculation unit 13 output drivers to require moment of torsion; As shown in Figure 4; The driving torque transformation component 20 of input transformation component 17 makes actuator require the moment of torsion and the gear ratio of variable-speed motor 9 to multiply each other, and multiplication result is outputed to auto model 26 as driving torque Tw.When driving torque transformation component 20 output driving torque Tw, the ingredient d Zv1 that is derived from driving torque Tw, Zv1, dSp1, Sp1 that auto model 26 calculates in the composition that constitutes the car body bobbin movement.Then, auto model 26 outputs to first regulating control 27 with result of calculation dZv1, Zv1, dSp1, Sp1.When auto model 26 output composition dZv1, Zv1, dSp1, Sp1; First regulating control 27 outputs to the first tuning gain multiplied operational part 30 according to the control command value A that ingredient d Zv1, Zv1, dSp1, Sp1 calculate driving torque with the control command value A that calculates.Thus, first regulating control 27 calculates the control command value A that driving torque is proofreaied and correct the direction that suppresses for the change to rate of pitch dSp1, and this rate of pitch dSp1 is the composition that is derived from driving torque Tw that constitutes in the composition of car body bobbin movement.When first regulating control, 27 output control command value A, the first tuning gain multiplied operational part 30 multiplies each other control command value A and tuning gain K1, and multiplication result is outputed to motor torsional moment transformation component 33 as Correction and Control command value K1A.Thus, the first tuning gain multiplied operational part 30 is adjusted into the control command value A of driving torque change, the i.e. change of wheel load as the rate of pitch dSp1 of the composition that is derived from driving torque Tw is suppressed, prevents simultaneously because the change of front and back acceleration/accel and bring the direction of sense of discomfort to chaufeur.

In addition, the detection signal that suspension travel calculating part 21 bases are exported by vehicle-wheel speed sensor 5 calculates path increment Zf, Zr and travel speed dZf, the dZr of suspension, and result of calculation is outputed to force transformation portion 22 up and down.When suspension travel calculating part 21 delivery stroke amount Zf, Zr and travel speed dZf, dZr, the Fzf that exerts oneself, Fzr calculate according to path increment Zf and travel speed dZf in force transformation portion 22 up and down, and the Fzf that exerts oneself on calculating, Fzr are outputed to auto model 26.When exerting oneself Fzf, Fzr in force transformation portion 22 outputs up and down, auto model 26 calculates the ingredient d Zv2 that is derived from the Fzf that exerts oneself, Fzr, Zv2, dSp2, the Sp2 in the composition that constitutes the car body bobbin movement, and result of calculation is outputed to second regulating control 28.When auto model 26 output composition dZv2, Zv2, dSp2, Sp2, second regulating control 28 calculates the control command value B of driving torque according to the ingredient d Zv2, Zv2, dSp2, the Sp2 that are derived from the Fzf that exerts oneself, Fzr.Then, second regulating control 28 outputs to the second tuning gain multiplied operational part 31 with the control command value B that calculates.Thus, second regulating control 28 calculates the control command value B that driving torque is proofreaied and correct the direction that suppresses for the change to rate of pitch dSp2, and this rate of pitch dSp2 is the composition that is derived from the Fzf that exerts oneself, Fzr that constitutes in the composition of car body bobbin movement.When second regulating control, 28 output control command value B, the second tuning gain multiplied operational part 31 multiplies each other control command value B and tuning gain K2, and multiplication result is outputed to motor torsional moment transformation component 33 as Correction and Control command value K2B.Thus, the second tuning gain multiplied operational part 31 is adjusted into the control command value B of driving torque change, the i.e. change of wheel load as the rate of pitch dSp2 of the composition of exert oneself on being derived from Fzf, Fzr is suppressed, prevents simultaneously because the change of front and back acceleration/accel and bring the direction of sense of discomfort to chaufeur.

In addition, body speed of vehicle estimating section 23 is calculated body speed of vehicle V according to the detection signal by vehicle-wheel speed sensor 5 outputs, and the body speed of vehicle V that calculates is outputed to turning motion estimating section 24.When body speed of vehicle estimating section 23 output body speed of vehicle V; Turning motion estimating section 24 is calculated yaw velocity γ and the horizontal angle of slide β of car body v according to body speed of vehicle V with by the detection signal of steering angle sensor 2 output, and yaw velocity γ and the horizontal angle of slide β of car body v are outputed to turning resistance estimating section 25.At this, be " 0 " owing to turn to input, so the result of calculation of yaw velocity γ and the horizontal angle of slide β of car body v is " 0 ".When turning motion estimating section 24 output yaw velocity γ and the horizontal angle of slide β of car body v; Turning resistance estimating section 25 is calculated turning resistance Fcf, Fcr (=0) according to yaw velocity γ, car body horizontal angle of slide β v and tire hub angle δ, and the turning resistance Fcf, the Fcr that calculate are outputed to auto model 26.When turning resistance estimating section 25 output turning resistance Fcf, Fcr; The ingredient d Wf3 that is derived from turning resistance Fcf, Fcr, dWr3, dSF3, SF3 (=0) that auto model 26 calculates in the composition that constitutes the car body bobbin movement output to the 3rd regulating control 29 with result of calculation.When auto model 26 output composition dWf3, dWr3, dSF3, SF3; The 3rd regulating control 29 outputs to the 3rd tuning gain multiplied operational part 32 according to the control command value C (=0) that the ingredient d Wf3, dWr3, dSF3, the SF3 that are derived from turning resistance Fcf, Fcr calculate driving torque with the control command value C that calculates.When the 3rd regulating control 29 output control command value C, the 3rd tuning gain multiplied operational part 32 multiplies each other control command value C and tuning gain K3, and multiplication result is outputed to motor torsional moment transformation component 33 as Correction and Control command value K3C (=0).

Then; The aggregate value that motor torsional moment transformation component 33 makes Correction and Control command value K1A, Correction and Control command value K2B and Correction and Control command value K3C multiplies each other with the gear ratio of variable-speed motor 9, and multiplication result is outputed to adder calculator 14 as actuator torque correction value.When motor torsional moment transformation component 33 output driver torque correction values; As shown in Figure 3; Adder calculator 14 is proofreaied and correct actuator requirement moment of torsion the Calais with actuator torque correction value through making actuator requirement moment of torsion mutually, after proofreading and correct, requires moment of torsion to output to torque command value operational part 15 correcting result.When requiring moment of torsion behind adder calculator 14 output calibrations, torque command value operational part 15 requires moment of torsion to come the calculated torque command value after proofreading and correct, and the torque command value that calculates is outputed to inverter 7.When torque command value operational part 15 output torque command value, the electric power that inverter 7 is accumulated battery 10 according to the torque command value of output supplies to braking CD-ROM drive motor 8.Then, braking CD-ROM drive motor 8 correspondingly produces moment of torsion with the electric power that inverter 7 is supplied with, and the moment of torsion that is produced is additional to front-wheel 5FL, 5RR through variable-speed motor 9 and axle drive shaft 11.Thus, such shown in the moment t0～t1 of Figure 15 (a) driving torque of front-wheel 5FL, 5RR is controlled, compared, can suppress the change of rate of pitch dSp with the situation of driving torque not being proofreaied and correct.Thereby, can suppress to take turns load change, be the vibration of car body, thereby can improve ride quality.

At this, chaufeur begins to utilize bearing circle 6 to carry out steering operation in order to make vehicle 1 change fare, shown in the moment t1 of Figure 15 (a), makes to turn to input to increase gradually.Like this, turn to the absolute value of input to increase gradually, thus, turning motion estimating section 24 calculates the gradually big value of absolute value when calculating yaw velocity γ and the horizontal angle of slide β of car body v.In addition, turning resistance estimating section 25 calculates the gradually big value of absolute value when calculating turning resistance Fcf, Fcr.And auto model 26 calculates the gradually big value of absolute value during from ingredient d Wf3, the dWr3 of turn resistance Fcf, Fcr, dSF3, SF3 in calculation sources.Then; The 3rd regulating control 29 calculates proofreaies and correct the control command value C (＞0) for the direction that the change as the change speed dWf3 of front-wheel load is suppressed with driving torque, and the change speed dWf3 of this front-wheel load is the composition that is derived from turning resistance Fcf, Fcr that constitutes in the composition of car body bobbin movement.Promptly; When the beginning steering operation, owing to the motion of diving takes place for turning resistance Fcf, Fcr, the change speed dWf3 of front-wheel load increases; At this moment, driving torque is proofreaied and correct the direction of direction to suppress as the increase to change speed dWf3 for driving torque is increased.When the 3rd regulating control 29 output control command value C; The 3rd tuning gain multiplied operational part 32 multiplies each other the tuning gain K3 (＜0) of control command value C and negative value, and multiplication result is outputed to motor torsional moment transformation component 33 as Correction and Control command value K3C (＜0).Thus; When the 3rd tuning gain multiplied operational part 32 increases at the change speed dWf3 of front-wheel load; Control command value C is adjusted into the direction that driving torque reduces, with the direction of encouraging as change to the change speed dWf3 that loads as the front-wheel of the composition that is derived from turning resistance Fcf, Fcr.

Thereby via motor torsional moment transformation component 33 and adder calculator 14, it is gradually little value that torque command value operational part 15 makes the torque command value.Then, via inverter 7, braking CD-ROM drive motor 8 reduces the moment of torsion that is produced gradually.Thus, when produce diving motion as the car body bobbin movement, through such driving torque that reduces as the moment t1 of Figure 15 (a) shown in, can encourage dives moves.Thereby, compare with the situation of not carrying out the correction of driving torque, front-wheel load Wf can be increased, thereby the side drag Cp of front-wheel 5FL, 5FR can be increased.Therefore, can improve the responsibility of yaw velocity γ, thereby can increase the transversal force that acts on front-wheel 5FL, 5FR, can improve the steering response property of vehicle 1.Consequently, the responsibility of yaw velocity γ increases, and the transversal force that puts on front-wheel 5FL, 5FR is in the timing increase of morning.In addition, because transversal force is in the timing increase of morning, the time diffusion value reduction of transverse acceleration.At this, the time waveform of yaw velocity has related with the time waveform of the time diffusion value of transverse acceleration.Therefore, through reducing the time diffusion value of transverse acceleration, can reduce the absolute value of the peak value of yaw velocity.

In addition, owing in the change that suppresses the wheel load, improve steering response property, can improve the linearity of yaw velocity γ, promptly can improve the rectilinearity of output with respect to input.Thus, the variation of transverse acceleration can be relaxed, thereby also the change of bank velocity can be suppressed.

And, beginning to utilize after bearing circle 6 carries out steering operation, yaw velocity γ converges to fixed value gradually.Like this, because yaw velocity ¨ time diffusion value reduces, can suppress the action that yaw velocity γ increases, vehicle 1 rotates and become big phenomenon.

In addition; Only driving torque is proofreaied and correct in the method for the direction that suppresses for change such shown in Figure 15 (b) to the wheel load; Though can suppress the vibration of car body, produce the reduction of steering response property, the increase of inclination campaign, may bring sense of discomfort to chaufeur.For example, when chaufeur began steering operation, the turning resistance Fcf, the Fcr that put on wheel 5FL～5RR increased, and propulsive effort reduces.Thereby, when producing the underriding motion, proofread and correct the direction that for inhibition underriding travel direction, promptly increases driving torque.Therefore, front-wheel load Wf reduces, and the side drag Cp of front-wheel 5FL, 5FR reduces.Consequently the responsibility of yaw velocity γ reduces, and the transversal force that puts on front-wheel 5FL, 5FR reduces the steering response property reduction of vehicle 1.In addition, because the reduction of steering response property, the linearity of yaw velocity γ, the rectilinearity of promptly exporting with respect to input reduce.Thus, can't relax the variation of transverse acceleration, the inclination campaign increases.

More than, in this embodiment, the motor torsional moment transformation component 33 of the inverter 7 of Fig. 1, braking CD-ROM drive motor 8, variable-speed motor 9, Fig. 4 constitutes moment of torsion extra cell 100.Below likewise, the actuator of the braking CD-ROM drive motor ECU 12 of Fig. 1, Fig. 3 requires propulsive effort car body vibration-damping control unit 16, input transformation component 17, body oscillating estimating section 18, the torque command value calculating part 19 of torque calculation unit 13, Fig. 3 and Fig. 4 to constitute motion estimation unit 101 and motion-estimation step.In addition, the auto model 26 of the portion of force transformation up and down 22 of Fig. 4, turning resistance estimating section 25, Fig. 4 also constitutes motion estimation unit 101 and motion-estimation step.And the braking CD-ROM drive motor ECU 12 of Fig. 1, the adder calculator 14 of Fig. 3, propulsive effort car body vibration-damping control unit 16, torque command value calculating part 19 constitute inhibition torque control unit 103 and suppress the torque control step.In addition, first regulating control 27, second regulating control, 28, first tuning gain multiplied operational part 30, the second tuning gain multiplied operational part 31 also constitute and suppress torque control unit 103 and suppress the torque control step.And the braking CD-ROM drive motor ECU 12 of Fig. 1, the adder calculator 14 of Fig. 3, propulsive effort car body vibration-damping control unit 16, torque command value calculating part 19, the 3rd regulating control the 29, the 3rd tuning gain multiplied operational part 32 constitute growth encourage torque control unit 103 and encourage the torque control step.In addition, first regulating control 27 of Fig. 4, second regulating control 28 constitute and suppress torque arithmetic unit 104.And first tuning gain multiplied operational part 30, the second tuning gain multiplied operational part 31 of Fig. 4 constitutes inhibition multiplying value calculating unit 105.In addition, the 3rd regulating control 29 constitutes growth encourage torque arithmetic unit 106.And the 3rd tuning gain multiplied operational part 32 of Fig. 4 constitutes growth encourage multiplying value calculating unit 107.

(effect of this embodiment)

(1) in this embodiment, suppresses torque control unit 102 and driving torque is controlled to be the direction that requires the change of the composition of driving torque and road surface interference to suppress to being derived from the composition that constitutes the car body bobbin movement.In addition, encourage torque control unit 103 driving torque is controlled to be the direction that the change to the composition that is derived from turning resistance encourages.

According to this structure, before the beginning steering operation, the direction through the change that driving torque is controlled to be to the composition that requires the interference of driving torque and road surface that is derived from chaufeur suppresses can suppress to take turns the change of load.In addition; After the beginning steering operation,, can encourage the motion of diving through the direction that the change that driving torque is controlled to be to the composition that is derived from the turning resistance that puts on wheel encourages; Thereby can increase the wheel load of front-wheel, can improve steering response property.And, through in the change that suppresses the wheel load, improving steering response property, can relax the variation of transverse acceleration, thereby can suppress the inclination campaign.Thus, can in the change that suppresses the wheel load, make the raising of steering response property and the inhibition of inclination campaign become possibility.

(2) suppress multiplying value calculating unit 105 make the tuning gain of multiplying each other respectively with driving torque that the change that is derived from the composition that requires driving torque is suppressed and driving torque that the change that is derived from the composition that disturbs on the road surface is suppressed on the occasion of.In addition, encouraging the tuning gain that multiplying value calculating unit 107 multiplies each other the driving torque that suppresses with change to the composition that is derived from turning resistance is negative value.

According to this structure, can go out driving torque to be relatively easy to Structure Calculation.

(3) motion estimation unit 101 as requested driving torque, road surface disturb and turning resistance estimate car body the direction of upspringing up-and-down movement and around the rotatablely moving of pitch axis, be used as the car body bobbin movement.

According to this structure, can estimate and take turns the physical quantity that load has fixed relationship and can control with driving torque, be used as the car body bobbin movement.

(4) motion estimation unit 101 at least one or their composite value in speed, the amount of upspringing, rate of pitch and the pitch angle of estimating to upspring is used as being derived from the composition that requires driving torque and is derived from the composition that disturb on the road surface.

According to this structure, can driving torque be controlled to be the direction that the change to the speed of upspringing, the amount of upspringing, rate of pitch and the pitch angle etc. of car body suppresses.

(5) motion estimation unit 101 is estimated at least one or their composite value in variance components, rate of pitch and the pitch angle of front-wheels load, front-wheel load, is used as being derived from the composition of turning resistance.

According to this structure, when beginning steering operation, can driving torque be controlled to be the direction that the change to variance components, front-wheel load, rate of pitch and the pitch angle etc. of front-wheel load encourages.

(6) motion estimation unit 101 is estimated turning resistance according to deflection angle and body speed of vehicle.

According to this structure, can calculate turning resistance to be relatively easy to structure.

(7) motion estimation unit 101 is estimated the road surface interference according to wheel velocity.

According to this structure, can calculate the road surface interference to be relatively easy to structure.

(8) motion estimation unit 101 is estimated the travel speed and the path increment of suspension according to wheel velocity, and the travel speed that estimates and the extinguishing coefficient of suspension are multiplied each other, and the path increment that estimates and the spring constant of suspension are multiplied each other.Then, motion estimation unit 101 is made as the estimated valve that disturb on the road surface with the aggregate value of these multiplication results.

According to this structure, can disturb with the Structure Calculation road surface that is more prone to.

(9) in this embodiment, suppress the torque control step and driving torque is controlled to be the direction that requires the change of the composition of driving torque and road surface interference to suppress to being derived from the composition that constitutes the car body bobbin movement.In addition, encourage the torque control step driving torque is controlled to be the direction that the change to the composition that is derived from turning resistance encourages.

According to this structure, before the beginning steering operation, the direction through the change that driving torque is controlled to be to the composition that requires the interference of driving torque and road surface that is derived from chaufeur suppresses can suppress to take turns the change of load.In addition, after the beginning steering operation,, can encourage the motion of diving, can increase the wheel load of front-wheel, can improve steering response property through the direction that the change that driving torque is controlled to be to the composition that is derived from the turning resistance that puts on wheel encourages.And, through in the change that suppresses the wheel load, improving steering response property, can relax the variation of transverse acceleration, can suppress the inclination campaign.Thus, can in the change that suppresses the wheel load, make the raising of steering response property and the inhibition of inclination campaign become possibility.

(application examples)

Figure 16 is the instruction diagram of application examples that is used to explain the body oscillating control setup of first embodiment.

In addition; In this embodiment; Show the example that braking CD-ROM drive motor ECU 12 proofreaies and correct driving torque the direction of encouraging for the change to the change speed dWf3 of front-wheel load; But also can adopt other structure, wherein, the change speed dWf3 of above-mentioned front-wheel load is the composition that is derived from turning resistance Fcf, Fcr that constitutes in the composition of car body bobbin movement.For example; Also can that kind shown in figure 16 constitute following structure: driving torque is proofreaied and correct the direction of encouraging for change to the change speed dWf3 of front-wheel load; And, driving torque is proofreaied and correct the direction that suppresses for to the change speed dWr3 that loads as the trailing wheel load Wr3 and the trailing wheel of the composition that is derived from turning resistance Fcf, Fcr.In addition, also can constitute following structure: driving torque is proofreaied and correct the direction that suppresses for change at least one physical quantity in the physical quantity relevant such as the change speed dWr3 of trailing wheel load Wr3, trailing wheel load, the change acceleration/accel of trailing wheel load with the trailing wheel load.

The effect of use-case (should)

(1) in should use-case, estimate to be used as being derived from the composition of turning resistance with the relevant physical quantity of trailing wheel load, with driving torque be controlled to be to the trailing wheel that the estimates direction that the change of relevant physical quantity suppresses of loading.

According to this structure, can the control effect be concentrated on the composition of wanting to encourage its change especially (for example any in change speed, rate of pitch and the luffing angle of front-wheel load, front-wheel load or their composite value) in the composition that is derived from turning resistance.

(second embodiment)

Then, with reference to accompanying drawing second embodiment of the present invention is described.In addition, for structure identical etc., use identical Reference numeral with above-mentioned each embodiment.

This embodiment is loaded into rear wheel drive and is the four-wheel internal-combustion engines vehicle of hand gear formula (being the FRMT car), controls the car body bobbin movement through control as the moment of torsion that driving engine produced of propulsion source, and this point is different with above-mentioned first embodiment.

Figure 17 is the concept map of summary structure of the vehicle of expression second embodiment.

Specifically, shown in figure 17, in this embodiment, possess driving engine 50, MT variable-speed motor 51 and ECM 52 to replace inverter 7, braking CD-ROM drive motor 8, variable-speed motor 9, battery 10, axle drive shaft 11 and braking CD-ROM drive motor ECU 12.At this, driving engine 50 constitutes moment of torsion extra cell 100 with MT variable-speed motor 51.In addition, ECM 52 constitutes motion estimation unit 101, motion-estimation step, inhibition torque control unit 102, suppresses the torque control step, encourages torque control unit 103 and encourages the torque control step.

Driving engine 50 produces moment of torsion according to the instruction by ECM 52 outputs, and the moment of torsion that is produced is outputed to MT variable-speed motor 51.

MT variable-speed motor 51 will be additional to trailing wheel 5RL, 5RR via axle 53, differential gear 54 and axle drive shaft 55 by the moment of torsion of driving engine 50 outputs.

ECM 52 is made up of microprocessor.Microprocessor possesses the IC that is made up of A/D translation circuit, D/A translation circuit, central arithmetic processing apparatus and memory device etc.And, the program that ECM 52 preserves according to memory device, the detection signal of being exported based on each sensor 2～5 calculates the moment of torsion that will make driving engine 50 outputs, and the instruction of the moment of torsion that calculates making output outputs to driving engine 50.

Figure 18 is the block diagram of expression by the structure of the program of microprocessor execution.

In addition, shown in figure 18, in this embodiment, 15 pairs of driving engines of torque command value operational part, 50 output torque command value, this point is different with above-mentioned first embodiment.

Figure 19 is the block diagram of the structure of expression propulsive effort car body vibration-damping control unit 16.

Figure 20 is the diagram of circuit of the action of expression propulsive effort car body vibration-damping control unit 16.

In addition; Shown in figure 19; In this embodiment, the action of driving torque transformation component 20, first regulating control 27, second regulating control, 28, first tuning gain multiplied operational part 30, second tuning gain multiplied operational part the 31, the 3rd tuning gain multiplied operational part 32 is different with above-mentioned first embodiment.In addition, at this embodiment, possess engine torque transformation component 56 and replace motor torsional moment transformation component 33, this point is different with above-mentioned first embodiment.

The actuator that driving torque transformation component 20 reads by 13 outputs of actuator requirement torque calculation unit requires moment of torsion (the step S101 of Figure 20).Actuator require moment of torsion with the torque rating of the S. A. of driving engine 50, be that the driving engine end value is represented.Then, driving torque transformation component 20 makes the actuator that is read require moment of torsion and gear ratio to multiply each other.At this, gear is than being meant as the mean speed of the trailing wheel 5RL about axle drive shaft, 5RR and the ratio of the rotating speed of driving engine 50.Thus, require moment of torsion to be transformed to axle drive shaft end value (the step S102 of Figure 20) actuator from the driving engine end value.The axle drive shaft end value is meant the torque rating among trailing wheel 5RL, the 5RR.Then, driving torque transformation component 20 outputs to body oscillating estimating section 18 with multiplication result as driving torque Tw.

Figure 21 is the figure that is used to explain the action of controller gain and tuning gain multiplied operational part.

First regulating control 27 will be multiplied each other with " 1 " as quantity of state x (=[dZv1, Zv1, dSp1, Sp1]) and controller gain F1 by the ingredient d Zv1 that is derived from driving torque Tw, Zv1, dSp1, the Sp1 of auto model 26 outputs.At this, controller gain F1 is meant that calculating sends as an envoy to converges to the gain of the driving torque of " 0 " as the rate of pitch dSp1 that is derived from the composition of driving torque Tw through multiplying each other with quantity of state x.For example set controller gain F1 according to following (17) (18) formula.

F1＝R ^-1B ^TP …(17)

[several 5]

$J={\&Integral;}_o^{\&infin;}[x^T\left(t\right)\mathrm{Qx}\left(t\right)+u^T\left(t\right)\mathrm{Ru}\left(t\right)]\mathrm{dt}\&CenterDot;\&CenterDot;\&CenterDot;\left(18\right)$

x＝[dZv?Zv?dSp?Sp] u＝[Tw?Fzf?Fzr?Fcf?Fcr]

$Q=\left[\begin{array}{cccc}\mathrm{<figure-callout\; id="0"\; label="q"\; filenames="HDA0000143427700000201.png,HDA0000143427700000221.png"\; state="\{\{state\}\}">q</figure-callout>}& 0& 0& 0\\ 0& 0& 0& 0\\ 0& 0& 0& 0\\ 0& 0& 0& 0\end{array}\right]$ $R=\left[\begin{array}{ccccc}1& 0& 0& 0& 0\\ 0& \mathrm{<figure-callout\; id="0"\; label="r"\; filenames="HDA0000143427700000201.png,HDA0000143427700000221.png"\; state="\{\{state\}\}">r</figure-callout>}& 0& 0& 0\\ 0& 0& \mathrm{<figure-callout\; id="0"\; label="r"\; filenames="HDA0000143427700000201.png,HDA0000143427700000221.png"\; state="\{\{state\}\}">r</figure-callout>}& 0& 0\\ 0& 0& 0& \mathrm{<figure-callout\; id="0"\; label="r"\; filenames="HDA0000143427700000201.png,HDA0000143427700000221.png"\; state="\{\{state\}\}">r</figure-callout>}& 0\\ 0& 0& 0& 0& r\end{array}\right]$

At this, above-mentioned (17) formula is the calculating formula of the controller gain F1 of Optimal Regulator that the change of rate of pitch dSp1 as the composition that is derived from driving torque Tw is suppressed.In addition, in above-mentioned (18) formula, J is the evaluation function of the quadric form in the Optimal Regulator, and P is as Li Kadi algebraic equation PA+A ^TP-PBR ^-1B ^TThe positive definite symmetric matrices of separating of P+Q=0.In addition, following controller gain F2, F4, F5 also set according to same numerical expression.Thus; First regulating control 27 calculates proofreaies and correct the compensation value that (control) is the direction that suppresses of the change to rate of pitch dSp1 with driving torque; Wherein, this rate of pitch dSp1 is the composition that is derived from driving torque Tw that constitutes in the composition of car body bobbin movement.Then, first regulating control 27 outputs to the first tuning gain multiplied operational part 30 with result of calculation as the control command value A of driving torque.

In addition, first regulating control 27 will be multiplied each other with " 1 " as quantity of state x (=[dZv1, Zv1, dSp1, Sp1]) and controller gain F4 by the ingredient d Zv1 that is derived from driving torque Tw, Zv1, dSp1, the Sp1 of auto model 26 outputs.At this, controller gain F4 is meant that calculating sends as an envoy to converges to the gain of the driving torque of " 0 " as the speed of the upspringing dZv1 that is derived from the composition of driving torque Tw through multiplying each other with quantity of state x.Thus, first regulating control 27 calculates the compensation value of driving torque being proofreaied and correct the direction that (control) suppress for the change to the speed dZv1 that upsprings, and this speed dZv1 that upsprings is the composition that is derived from driving torque Tw in the composition of formation car body bobbin movement.

Then, first regulating control 27 outputs to the first tuning gain multiplied operational part 30 with result of calculation as the control command value D of driving torque.

Second regulating control 28 will be multiplied each other with " 1 " as quantity of state x (=[dZv2, Zv2, dSp2, Sp2]) and controller gain F2 by the ingredient d Zv2 that is derived from the Fzf that exerts oneself, Fzr, Zv2, dSp2, the Sp2 of auto model 26 outputs.At this, controller gain F2 is meant that calculating sends as an envoy to converges to the gain of the driving torque of " 0 " as the pitch angle Sp2 that is derived from the composition of the Fzf that exerts oneself, Fzr through multiplying each other with quantity of state x.Thus, second regulating control 28 calculates the compensation value of driving torque being proofreaied and correct the direction that (control) suppress for the change to pitch angle Sp2, and wherein, this pitch angle Sp2 is the composition that is derived from the Fzf that exerts oneself, Fzr in the composition of formation car body bobbin movement.Then, second regulating control 28 outputs to the second tuning gain multiplied operational part 31 with result of calculation as the control command value B of driving torque.

In addition, second regulating control 28 will be multiplied each other with " 1 " as quantity of state x (=[dZv2, Zv2, dSp2, Sp2]) and controller gain F5 by the ingredient d Zv2 that is derived from the Fzf that exerts oneself, Fzr, Zv2, dSp2, the Sp2 of auto model 26 outputs.At this, controller gain F5 is meant that calculating sends as an envoy to converges to the gain of the driving torque of " 0 " as the displacement Zv1 that upsprings that is derived from the composition of the Fzf that exerts oneself, Fzr through multiplying each other with quantity of state x.Thus, second regulating control 28 calculates the compensation value of driving torque being proofreaied and correct the direction that (control) suppress for the change to the displacement Zv1 that upsprings, and wherein, this displacement Zv1 that upsprings is the composition that is derived from the Fzf that exerts oneself, Fzr in the composition of formation car body bobbin movement.Then, second regulating control 28 outputs to the second tuning gain multiplied operational part 31 with result of calculation as the control command value E of driving torque.

The first tuning gain multiplied operational part 30 makes by the control command value A of first regulating control 27 output and tuning gain K1 multiply each other (the step S302 of Figure 20).In addition, the first tuning gain multiplied operational part 30 makes by the control command value D of first regulating control 27 output and tuning gain K4 multiply each other (the step S302 of Figure 20).Then, the first tuning gain multiplied operational part 30 outputs to motor torsional moment transformation component 33 with multiplication result as Correction and Control command value K1A, K4D.At this; ECM 52 can suppress the change of the rate of pitch dSp1 and the speed dZv1 that upsprings the Calais through making actuator requirement moment of torsion and control command value A, D mutually, and this rate of pitch dSp1 and the speed dZv1 that upsprings are the compositions that is derived from driving torque Tw that constitutes in the composition of car body bobbin movement.Yet, only with the method for the control command value A of driving torque, D addition in, acceleration/accel change and bring sense of discomfort before and after might making to chaufeur.Thereby, shown in figure 21, tuning gain K1, K4 be on the occasion of and be set at not the value of can be owing to the change of front and back acceleration/accel bringing the scope of sense of discomfort to chaufeur.Thus; The first tuning gain multiplied operational part 30 is preventing because the change of front and back acceleration/accel and when bringing sense of discomfort to chaufeur, even require the compensation value of moment of torsion to be adjusted into the repressed direction of change of the repressed direction wheel of the change that makes the composition that is derived from driving torque Tw load actuator.

Like this, in this embodiment, require the compensation value of moment of torsion to be adjusted into the direction that the change as the rate of pitch dSp1 of the composition that is derived from driving torque Tw and the speed dZv1 that upsprings is suppressed actuator.Thereby, the change of load can be suppressed to take turns, thereby ride quality can be improved.

Figure 22 is the coordinate diagram of the relation between tuning gain of expression and the body speed of vehicle.

In addition, the first tuning gain multiplied operational part 30 makes tuning gain K1, K4 can correspondingly change (the step S301 of Figure 20) with body speed of vehicle V.Specifically, shown in figure 22, under the situation of the first tuning gain multiplied operational part 30 in body speed of vehicle V is in the scope below the first threshold, tuning gain K1, K4 are set at bigger fixed value (for example 1).In addition, the first tuning gain multiplied operational part 30 is set at smaller fixed value a (for example below 1 on the occasion of) with tuning gain K1, K4 under body speed of vehicle V is in greater than the situation in the scope more than second threshold value of first threshold.And, the first tuning gain multiplied operational part 30 under body speed of vehicle V is positioned at greater than first threshold and the situation less than the scope of second threshold value, set make tuning gain K1, K4 becomes big along with body speed of vehicle V and rectilinearity ground increases.Thus, in the low speed territory, can increase the absolute value of Correction and Control command value K1A, K4D, thereby can suppress to take turns the change of load.In addition, in high-speed domain, can reduce the absolute value of Correction and Control command value K1A, K4D, thereby reduce the inhibition effect of the change of wheel load, can prevent the reduction of steering response property.

The second tuning gain multiplied operational part 31 makes by the control command value B of second regulating control 28 output and tuning gain K2 multiply each other (the step S303 of Figure 20).In addition, the second tuning gain multiplied operational part 31 makes by the control command value E of second regulating control 28 output and tuning gain K5 multiply each other (the step S303 of Figure 20).Then, the second tuning gain multiplied operational part 31 outputs to motor torsional moment transformation component 33 with multiplication result as Correction and Control command value K2B, K5E.At this; ECM 52 can suppress the change of rate of pitch dSp2 and the amount of upspringing Zv2 the Calais through making actuator requirement moment of torsion and control command value B, E mutually, and this rate of pitch dSp2 and the amount of upspringing Zv2 are the compositions that is derived from the Fzf that exerts oneself, Fzr that constitutes in the composition of car body bobbin movement.Yet, only with the method for the control command value B of driving torque, E addition in, acceleration/accel change and bring sense of discomfort before and after might making to chaufeur.Thereby, tuning gain K2, K5 be on the occasion of and be set at not the value of can be owing to the change of front and back acceleration/accel bringing the scope of sense of discomfort to chaufeur.Thus; The second tuning gain multiplied operational part 31 preventing because the change of front and back acceleration/accel and when bringing sense of discomfort to chaufeur, the change that actuator is required the compensation value of moment of torsion to be adjusted into to make the composition that is derived from the Fzf that exerts oneself, Fzr, the i.e. repressed direction of change of wheel load.

Like this, in this embodiment, require the compensation value of moment of torsion to be adjusted into the direction that the change as the rate of pitch dSp2 of the composition of exert oneself on being derived from Fzf, Fzr and the amount of upspringing Zv2 is suppressed actuator.Therefore, the change of load can be suppressed to take turns, ride quality can be improved.

In addition, the second tuning gain multiplied operational part 31 makes tuning gain K2, K5 can correspondingly change (the step S301 of Figure 20) with body speed of vehicle V.Specifically, shown in figure 22, under the situation of the second tuning gain multiplied operational part 31 in body speed of vehicle V is in the scope below the first threshold, tuning gain K2, K5 are set at bigger fixed value (for example 1).In addition, the second tuning gain multiplied operational part 31 is set at smaller fixed value a (for example below 1 on the occasion of) with tuning gain K2, K5 under body speed of vehicle V is in greater than the situation in the scope more than second threshold value of first threshold.And, the second tuning gain multiplied operational part 31 under body speed of vehicle V is positioned at greater than first threshold and the situation less than the scope of second threshold value, set make tuning gain K2, K5 becomes big along with body speed of vehicle V and rectilinearity ground increases.Thus, in the low speed territory, can increase the absolute value of Correction and Control command value K2B, K5E, thereby can suppress to take turns the change of load.In addition, in high-speed domain, can reduce the absolute value of Correction and Control command value K2B, K5E, thereby reduce the inhibition effect of the change of wheel load, can prevent the reduction of steering response property.

The 3rd tuning gain multiplied operational part 32 makes by the control command value C of the 3rd regulating control 29 output and tuning gain K3 multiply each other (the step S304 of Figure 20).Then, the 3rd tuning gain multiplied operational part 32 outputs to motor torsional moment transformation component 33 with multiplication result as Correction and Control command value K3C.At this; ECM 52 can suppress the change of the change speed dWf3 of front-wheel load the Calais through making actuator requirement moment of torsion and control command value C mutually, and the change speed dWf3 of this front-wheel load is the composition that is derived from turning resistance Fcf, Fcr that constitutes in the composition of car body bobbin movement.Yet, only with the method for the control command value C addition of driving torque in, acceleration/accel change before and after might making and bring sense of discomfort to chaufeur.In addition, when beginning steering operation, to the change of the change speed dWf3 of front-wheel load suppress to cause to suppress to dive motion, suppress the increase of front-wheel load Wf, have the possibility of the side drag Cp reduction of front-wheel 5FL, 5FR.Thereby, there are the transversal force reduction of front-wheel 5FL, 5FR, the possibility of steering response property reduction.Therefore, tuning gain K3 is negative value and is set at not the value of can be owing to the change of front and back acceleration/accel bringing the scope of sense of discomfort to chaufeur.Thus; The 3rd tuning gain multiplied operational part 32 preventing because the change of front and back acceleration/accel and when bringing sense of discomfort to chaufeur, requires the compensation value of moment of torsion to be adjusted into the direction that the change to the composition that is derived from turning resistance Fcf, Fcr encourages actuator.

Like this, in this embodiment, require the compensation value of moment of torsion to be adjusted into the direction that the change as the change speed dWf3 of the front-wheel of the composition that is derived from turning resistance Fcf, Fcr load is encouraged actuator.Thereby, when beginning steering operation, driving torque can be reduced, thereby the motion of diving can be encouraged, can increase front-wheel load Wf.Thus,, can increase the side drag Cp of front-wheel 5FL, 5FR, can increase the transversal force of front-wheel 5FL, 5FR, can improve steering response property because front-wheel load Wf increases.In addition, owing in the change that suppresses the wheel load, improve steering response property, can improve the linearity of yaw velocity γ, promptly can improve the rectilinearity of output with respect to input.Thus, the variation of transverse acceleration can be relaxed, thereby the inclination campaign can be suppressed.

In addition, the 3rd tuning gain multiplied operational part 32 makes tuning gain K3 can correspondingly change (the step S301 of Figure 20) with body speed of vehicle V.Specifically, shown in figure 22, under the situation of the 3rd tuning gain multiplied operational part 32 in body speed of vehicle V is in the scope below the first threshold, the absolute value of tuning gain K3 is set at smaller fixed value (for example 0).In addition, the 3rd tuning gain multiplied operational part 32 is set at bigger fixed value b (for example greater than a on the occasion of) with the absolute value of tuning gain K3 under body speed of vehicle V is in greater than the situation in the scope more than second threshold value of first threshold.And the 3rd tuning gain multiplied operational part 32 is set and is made the absolute value of tuning gain K3 become big along with body speed of vehicle V and rectilinearity ground reduces under body speed of vehicle V is positioned at greater than first threshold and the situation less than the scope of second threshold value.Thus, in the low speed territory, car body bobbin movement to steering volume (for example inclination campaign) is difficult to produce disorderly, and the desirability of raising turning efficiency is lower, at this moment, can reduce the absolute value of tuning gain K3, thereby can reduce the gain to steering volume.In addition, at high-speed domain, car body bobbin movement to steering volume (for example inclination campaign) is easy to generate disorder; Therefore the desirability that improves turning efficiency is higher, at this moment, can increase the absolute value of tuning gain K3; Gain can be increased, steering response property can be improved to steering volume.

Figure 23, Figure 24 are the coordinate diagram of the relation of tuning gain of expression and body speed of vehicle.

In addition; In this embodiment; Show at body speed of vehicle V and be in greater than first threshold and make tuning gain K1～K5 under less than the situation in the scope of second threshold value, but also can adopt other structure along with body speed of vehicle V becomes big and example that rectilinearity ground changes.For example, also can adopt following structure: shown in figure 23, be in greater than first threshold and under at body speed of vehicle V less than the situation in the scope of second threshold value, make tuning gain K1～K5 become big and change lenitively with the mode of cubic function along with body speed of vehicle V.According to this structure, Correction and Control command value K1A, K2B, K3C, K4D, K5E are changed lenitively, thereby can relax the variation of the driving torque that is additional to trailing wheel 5RL, 5RR.

In addition, for example also can adopt following structure: shown in figure 24, under the situation in body speed of vehicle V is in the scope below the first threshold, with tuning gain K1, K2, | K3|, K4, K5 all are set at equal fixed value (for example 0.5).According to this structure,, can in the change that suppresses the wheel load, improve steering response property in the low speed territory.

Engine torque transformation component 56 multiplies each other the aggregate value of Correction and Control command value K1A, K4D, Correction and Control command value K2B, K5E and Correction and Control command value K3C and gear ratio.Thus, be the driving engine end value with aggregate value from the drive shaft end value transform.Then, engine torque transformation component 56 outputs to adder calculator 14 (the step S305 of Figure 20) with multiplication result as actuator torque correction value.

More than, in this embodiment, the driving engine 50 of Figure 17, variable-speed motor 51 constitute moment of torsion extra cell 100.Likewise, the ECM 52 of Figure 17 constitutes motion estimation unit 101, motion-estimation step, inhibition torque control unit 102, suppresses the torque control step, encourages torque control unit 103, encourages the torque control step.

(effect of this embodiment)

(1) in this embodiment; Encourage the multiplying calculating unit under the situation of body speed of vehicle less than setting speed; Compare the absolute value of the tuning gain that the driving torque that reduces to suppress with change to the composition that is derived from turning resistance multiplies each other more than or equal to the situation of setting speed with body speed of vehicle.

According to this structure, in the low speed territory, when deflection angle increased, the absolute value of the tuning gain of multiplying each other through the driving torque that reduces to suppress with change to the composition that is derived from turning resistance can prevent that the absolute value of controlling quantity is excessive.In addition, at high-speed domain, when deflection angle reduces,, can prevent that the absolute value of controlling quantity is too small through increasing the absolute value of the tuning gain that the driving torque that suppresses with change to the composition that is derived from turning resistance multiplies each other.

(2) suppress the multiplying calculating unit under the situation of body speed of vehicle less than setting speed; Compare more than or equal to the situation of setting speed with body speed of vehicle, increase the absolute value of the tuning gain of multiplying each other respectively with the driving torque that the change that is derived from the composition that requires driving torque and road surface interference is suppressed.

According to this structure; In the low speed territory; Through increase with to being derived from the absolute value of the tuning gain that driving torque that the change that requires the driving torque and the composition of road surface interference suppresses multiplies each other respectively, can suppress to take turns load change, be the vibration of car body, can improve ride quality.In addition; At high-speed domain; Through reduce with to being derived from the absolute value of the tuning gain that driving torque that the change that requires the composition that driving torque and road surface disturb suppresses multiplies each other respectively, can reduce effect that the change to the wheel load suppresses, promptly can reduce the effect of moving and suppressing diving.Thereby, when beginning steering operation, can prevent the reduction of steering response property.

Claims (12)

1. body oscillating control setup is characterized in that possessing:

The moment of torsion extra cell, it is to wheel additional drives moment of torsion;

Motion estimation unit, its road surface that requires driving torque, puts on wheel from the road surface according to chaufeur are disturbed and through turning to the turning resistance that puts on wheel to estimate the car body bobbin movement;

Suppress the torque control unit, its driving torque that above-mentioned moment of torsion extra cell will be added is controlled to be the direction that the change to the change of the first motion composition in the composition that constitutes the above-mentioned car body bobbin movement that is estimated by above-mentioned motion estimation unit and the second motion composition suppresses; And

Encourage the torque control unit, its driving torque that above-mentioned moment of torsion extra cell will be added is controlled to be the direction that the change to the 3rd motion composition in the composition that constitutes the above-mentioned car body bobbin movement that is estimated by above-mentioned motion estimation unit encourages.

2. body oscillating control setup according to claim 1 is characterized in that,

Above-mentioned inhibition torque control unit possesses:

Suppress torque arithmetic unit, what it calculated that change to the above-mentioned first motion composition suppresses first drives and suppresses moment of torsion and second drive and suppress moment of torsion what the change of the above-mentioned second motion composition suppressed; And

Suppress multiplying value calculating unit; Its make that the change to the above-mentioned first motion composition that calculated by above-mentioned inhibition torque arithmetic unit suppresses first drive suppress moment of torsion and to the change of the above-mentioned second motion composition suppress second drive suppress moment of torsion respectively with on the occasion of tuning gain multiply each other

Above-mentioned growth encourage torque control unit possesses:

Encourage torque arithmetic unit, what it calculated that change to above-mentioned the 3rd motion composition suppresses the 3rd drives and suppresses moment of torsion; And

Encourage multiplying value calculating unit, what it made that the change to above-mentioned the 3rd motion composition that calculated by above-mentioned growth encourage torque arithmetic unit suppresses the 3rd drives the tuning gain that suppresses moment of torsion and negative value and multiplies each other,

Above-mentioned moment of torsion extra cell calculates the aggregate value of multiplication result that is calculated by above-mentioned inhibition multiplying value calculating unit and the multiplication result that is calculated by above-mentioned growth encourage multiplying value calculating unit, controls the driving torque that above-mentioned moment of torsion extra cell will add according to the aggregate value that is calculated.

3. body oscillating control setup according to claim 2 is characterized in that,

Compare more than or equal to the situation of setting speed with body speed of vehicle; Under the situation of body speed of vehicle less than this setting speed, above-mentioned growth encourage multiplying value calculating unit reduce with the change of above-mentioned the 3rd motion composition is suppressed the 3rd drive the absolute value that suppresses the tuning gain that moment of torsion multiplies each other.

4. according to claim 2 or 3 described body oscillating control setups, it is characterized in that,

Compare more than or equal to the situation of setting speed with body speed of vehicle; Under the situation of body speed of vehicle less than this setting speed, above-mentioned inhibition multiplying value calculating unit increases with change to the above-mentioned first motion composition suppresses and first drives and suppress moment of torsion and second drive the absolute value that suppresses the tuning gain that moment of torsion multiplies each other respectively to what the change of the above-mentioned second motion composition suppressed.

5. body oscillating control setup according to claim 1 is characterized in that,

Above-mentioned motion estimation unit is disturbed according to above-mentioned requirements driving torque, above-mentioned road surface and above-mentioned turning resistance is estimated the up-and-down movement around the direction that rotatablely moves and upspring of pitch axis of car body to be used as above-mentioned car body bobbin movement.

6. body oscillating control setup according to claim 5 is characterized in that,

Rate of pitch, the pitch angle of above-mentioned motion estimation unit estimation car body, at least one in the upspring speed and the amount of upspringing or their composite value are used as above-mentioned first motion composition and the above-mentioned second motion composition.

7. body oscillating control setup according to claim 1 is characterized in that,

In change speed, front-wheel load, rate of pitch and the pitch angle of above-mentioned motion estimation unit estimation front-wheel load at least one or their composite value are used as above-mentioned the 3rd motion composition.

8. body oscillating control setup according to claim 7 is characterized in that,

Above-mentioned motion estimation unit is estimated to be used as above-mentioned the 3rd motion composition with the relevant physical quantity of trailing wheel load,

The driving torque that above-mentioned growth encourage torque control unit will add above-mentioned moment of torsion extra cell is controlled to be the direction that the change to the physical quantity relevant with above-mentioned trailing wheel load that is estimated by above-mentioned motion estimation unit suppresses.

9. body oscillating control setup according to claim 1 is characterized in that,

Above-mentioned motion estimation unit is estimated above-mentioned turning resistance according to deflection angle and body speed of vehicle.

10. body oscillating control setup according to claim 1 is characterized in that,

Above-mentioned motion estimation unit is estimated the interference of above-mentioned road surface according to wheel velocity.

11. body oscillating control setup according to claim 10 is characterized in that,

Above-mentioned motion estimation unit is estimated the travel speed and the path increment of suspension according to wheel velocity; The above-mentioned travel speed that estimates and the extinguishing coefficient of suspension are multiplied each other; The above-mentioned path increment that estimates and the spring constant of suspension are multiplied each other, the aggregate value of these multiplication results is made as the estimated valve that disturb on above-mentioned road surface.

12. a body oscillating control method may further comprise the steps:

Motion-estimation step is according to disturbing and through turning to the turning resistance that puts on wheel to estimate the car body bobbin movement on the road surface that requires driving torque, puts on wheel from the road surface of chaufeur;

Suppress the torque control step, the driving torque that will be additional to wheel is controlled to be the direction that the change to the change of the first motion composition in the composition that constitutes the above-mentioned car body bobbin movement that estimates through above-mentioned motion-estimation step and the second motion composition suppresses; And

Encourage the torque control unit, the driving torque that will be additional to wheel is controlled to be the direction that the change to the 3rd motion composition in the composition that constitutes the above-mentioned car body bobbin movement that estimates through above-mentioned motion-estimation step encourages.

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