CN1883993A - Steering mechanism for vehicular drive-by-wire system and its steering drag simulator - Google Patents
Steering mechanism for vehicular drive-by-wire system and its steering drag simulator Download PDFInfo
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- CN1883993A CN1883993A CN 200510021170 CN200510021170A CN1883993A CN 1883993 A CN1883993 A CN 1883993A CN 200510021170 CN200510021170 CN 200510021170 CN 200510021170 A CN200510021170 A CN 200510021170A CN 1883993 A CN1883993 A CN 1883993A
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Abstract
The present invention discloses a vehicle wire-transmit steering mechanism and steering resistance simulator, which includes steering wheel and its position sensor. The steering resistance simulator includes a steering element and a first resilient element. One end of the steering element is rotationally connected with the steering wheel, and the other end is connected with the position sensor. Corresponding elastic deformation of the first resilient element is generated under the rotating operation of the steering element. Restoring force of the elastic deformation acts on the steering element and generates torque for enabling rotation of the steering element. Steering 'road sense' and correcting function of the inventive wire-transmit steering mechanism can realize simplicity and reliability. Requirement for motor and sensor of the wire-transmit steering mechanism are reduced. Hardware constitution for system is simple, and the cost is decreased. Essential control algorithm of the wire-transmit steering mechanism only relates to steering function, control is simple and realization is easy, then R.&D. difficulty of electric control unit (ECU) is reduced.
Description
[technical field]
The present invention relates to a kind of steering hardware of steer-by-wire (the Steer by wire) system that in light, medium sized vehicle, uses, utilize this steering hardware can on bearing circle, realize and approximate " road feel " and the bearing circle self-aligning function of true steering procedure.
[background technology]
In steer-by-wire (the Steer by wire) system in light, the medium sized vehicle, there is not direct mechanical connection between the driving device of bearing circle and wheel flutter.Traditional steer-by-wire technology as shown in Figure 1, comprise bearing circle 1, steering wheel position sensor 2, steering wheel torque sensor 3, bearing circle feedback motor 4, wheel flutter drive motor 5, wheel flutter torque sensor 6, steer wheel position sensor 7, wheel flutter 8, wheel flutter driving device 9, electronic control unit (being ECU).The major control signal that transmits comprises: steering wheel position signal a, steering wheel torque signal b, vehicle velocity signal c, bearing circle feedback motor drive signal d, wheel flutter motor drive signal e, wheel flutter torque signal f, steer wheel position signal g.ECU handles various signals, can realize the following function of steer-by-wire: according to steering wheel position signal a and vehicle speed signal c, ECU can calculate the steer wheel position signal of expectation, e drives wheel flutter drive motor 5 by output wheel flutter motor drive signal, can realize the rotation of wheel flutter 8 by steering transmission linkage 9.Utilize steer wheel position signal g to carry out controlled reset, realize that wheel flutter concerns that according to certain gear ratio following bearing circle rotates, and promptly turns to function wheel flutter drive motor 5.Utilize wheel flutter torque signal f and vehicle speed signal c, ECU calculates the cornering resistance that is applied to expectation on the bearing circle 1, " road feel " when promptly turning to by outbound course dish feedback motor drive signal e driving direction dish feedback motor 4, can apply cornering resistance to bearing circle 1.Utilize steering wheel torque signal b to carry out controlled reset, realize the cornering resistance controllable function, promptly on bearing circle, realize turning to " road feel " bearing circle feedback motor 4.In 1 time timing of bearing circle, ECU receive direction dish position signal a, outbound course dish feedback motor drive signal e controls bearing circle feedback motor 4, and bearing circle is just arrived midway location 1 time, finally realizes the steering reversal function.Because traditional wire passes steering swivel system realization " road feel " and the steering reversal function utilizes control unit that bearing circle feedback motor is controlled realization, control is complicated, thereby makes the systematic control algorithm research and development complicated, has increased the difficulty that treater ECU researches and develops.
[summary of the invention]
Main purpose of the present invention is exactly in order to solve prior art problems, provide a kind of line of vehicles to pass steering hardware, reduce the complexity that the steer-by-wire technology realizes turning to " road feel " and steering reversal, reduce the complexity of the electronic control unit development of steer-by-wire mechanism, reduce the R﹠D costs of its electronic control unit.
Another object of the present invention just provides a kind of line of vehicles and passes steering hardware cornering resistance analog machine, make steer-by-wire mechanism can realize turning to " road feel " and steering reversal easily, reduce the complexity of the electronic control unit controls of steer-by-wire mechanism, reduced its R﹠D costs.
For achieving the above object, a kind of line of vehicles that the present invention proposes passes steering hardware, comprising:
Bearing circle;
Steering wheel position sensor is used for the turned position of perceived direction dish;
Wheel flutter;
Wheel flutter drive motor and wheel flutter driving device, described wheel flutter drive motor is accepted control, rotates to change direct of travel by described wheel flutter actuator drives wheel flutter;
Electronic control unit is used to respond signal and the vehicle velocity signal that steering wheel position sensor is exported, and according to the wheel flutter desired locations that calculates, the running of control wheel flutter drive motor is to drive the wheel flutter rotation;
The cornering resistance analog machine, comprise the tumbler and first elastic component, described tumbler one end is connected with bearing circle and rotates with the rotation of bearing circle, the described tumbler other end is connected with steering wheel position sensor, described first elastic component produces corresponding elastic deformation under the tumbler rotary action, this elastically-deformable restoring force acts on tumbler and produces the moment that tumbler is rotated.
For achieving the above object, a kind of line of vehicles that the present invention proposes passes the cornering resistance analog machine of steering hardware, be used for when bearing circle rotates, producing and act on bearing circle and make bearing circle return the power that just arrives midway location, comprise the tumbler and first elastic component, described tumbler one end is used for being connected with bearing circle and rotating with the rotation of bearing circle, described first elastic component produces corresponding elastic deformation under the tumbler rotary action, this elastically-deformable restoring force acts on tumbler and produces the moment that tumbler is rotated.
The preferred version that above-mentioned line of vehicles passes steering hardware and cornering resistance analog machine thereof is: described cornering resistance analog machine also comprises in order to hold the housing of the tumbler and first elastic component, described first elastic component is a spring, described tumbler is columniform Steering gear, described Steering gear rotates around central axis with the rotation of bearing circle, also comprises the bearing that is connected between Steering gear and the housing.
The optimal way that the elastically-deformable restoring force of spring acts on Steering gear is: described cornering resistance analog machine also comprises thrust nut, described thrust nut is connected with Steering gear by screw thread, and can be round mobile along Steering gear axis direction by rotating, the two ends of described spring are separately fixed on thrust nut and the housing.
Further improvement of the present invention is: also comprise upper end second elastic component, lower end second elastic component and the upper bracket that is fixed on the housing medial surface, undersetting, described upper end second elastic component and lower end second elastic component are separately fixed on two opposite faces of thrust nut, or be separately fixed at described on, on the undersetting, be used for when thrust nut is moved to certain position, make thrust nut push upper end second elastic component or make thrust nut push lower end second elastic component and make it that elastic deformation take place with undersetting with upper bracket, described upper end second elastic component is identical with the length of lower end second elastic component, and less than the length of spring; Described spring comprises upper end spring and lower end spring, the two ends of described upper end spring are separately fixed on the medial surface of the upper side of thrust nut and upper bracket, the two ends of described lower end spring are separately fixed on the medial surface of the downside of thrust nut and undersetting, and the rigidity of described upper end spring and lower end spring is identical identical with length.
Of the present invention further the improvement is: the cornering resistance analog machine comprises that also ring set is at the friction drag resilient sleeve of Steering gear outside, the adjusting bolt that is fixed on the setting nut on the housing and is used for cooperating with setting nut, described friction drag resilient sleeve has two grassworts, grasswort near setting nut has through hole, away from the tapped bore that grasswort has and the adjusting bolt cooperates of setting nut, the inwall of described friction drag resilient sleeve posts friction lining.
The invention has the beneficial effects as follows: 1) the present invention utilizes mechanical system that cornering resistance is provided by the special cornering resistance analog machine of design, thereby realizes turning to " road feel " and steering reversal function.Promptly realize simulation to cornering resistance by design elastic component of suitable parameters and transmission device, so on bearing circle, apply one with truly turn to similar cornering resistance effect, finally realize turning to " road feel " and steering reversal function.Realize turning to maximum different the present invention of being of " road feel " and steering reversal to utilize mechanical mechanism to realize with traditional steer-by-wire technology, and the traditional wire biography utilize electron steering to realize.Utilize mechanical system in the process that realizes " road feel " and return function, not need it is carried out any control, and then simplified the control of system greatly, control algorithm only turns on the function with concentrating on, thereby the research and development complexity to whole steer-by-wire technology control algorithm research and treater ECU reduces greatly, thereby has reduced the R﹠D costs of its electronic control unit.2) the present invention is by the special cornering resistance analog machine of design, utilize mechanical system that cornering resistance and realization steering reversal are provided, therefore no longer need feedback motor and steering wheel torque sensor, wheel flutter torque sensor, so just reduced the cost of system research and development.After particularly adopting the multichannel Redundancy Design, the saving of hardware cost is more remarkable.3) steer-by-wire of the present invention mechanism to turn to " road feel " and steering reversal function to realize simple, reliable.
Feature of the present invention and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the scheme drawing of the steer-by-wire mechanism of prior art;
Fig. 2 is the generalized section of cornering resistance analog machine of the steer-by-wire mechanism of a kind of embodiment of the present invention;
Fig. 3 be among Fig. 2 A-A to section-drawing;
Fig. 4 is the block diagram of the friction drag resilient sleeve among Fig. 3;
Fig. 5 is the generalized section of cornering resistance analog machine of the steer-by-wire mechanism of another kind of embodiment of the present invention;
Fig. 6 is the schematic diagram of the steer-by-wire mechanism of a kind of embodiment of the present invention
Fig. 7 is the scheme drawing of the steer-by-wire mechanism of a kind of embodiment of the present invention;
Fig. 8 is the steering resisting torque and the steering wheel angle relation of the steer-by-wire mechanism of a kind of embodiment of the present invention.
[specific embodiment]
The cornering resistance analog machine of embodiment one, steer-by-wire mechanism mainly comprises as lower member: Steering gear 101 (being connected with bearing circle), cornering resistance simulator housing 104, first elastic component, second elastic component, thrust nut 110, upper bracket 105 and undersetting 115.First elastic component can be a spring, for example extension spring or button spring, also can be other elastic component, first elastic component in the present embodiment is the extension spring (promptly relying on stretches or compress produces elastic deformation) that is positioned at thrust nut 110 opposite flanks, be called upper end spring 107 and lower end spring 113 in the present embodiment, and upper end spring 107 has identical rigidity, length and installation parameter with lower end spring 113, and the length of elastic component is meant that elastic component is at the natural length that does not have under the elastic deformation state.Second elastic component can be spring, also can be rubber column, rubber coating, India rubber tube etc., upper end second elastic component and lower end second elastic component that comprise the both sides that lay respectively at thrust nut 110, upper end second elastic component and lower end second elastic component can be separately fixed on two opposite faces of thrust nut 110, also can be separately fixed on the upper and lower bearing 105,115, upper end second elastic component has identical rigidity and length with lower end second elastic component, and less than the length of first elastic component; Second elastic component in the present embodiment is a rubber coating, as upper end rubber coating 108 among Fig. 2 and lower end rubber coating 112.
As shown in Figure 2, Steering gear 101 is connected with bearing circle, and Steering gear 101 rotates with bearing circle.Steering gear 101 is connected with cornering resistance simulator housing 104 with 116 by upper and lower end bearing 103, and Steering gear 101 can be free around rotational in cornering resistance simulator housing 104.The outward flange that contacts with housing 104 at Steering gear 101 also is provided with axial elasticity back-up ring 102, is used to guarantee being connected of bearing 103 and Steering gear 101.Steering gear 101 ends are connected with steering wheel position sensor 2, by the exportable steering wheel position signal of sensor.Also can be designed to be connected with near other parts bearing circle in the vehicle.Thrust nut 110 is connected with Steering gear 101 by screw thread, and connecting thread does not have auto-lock function.When cw or rotate counterclockwise when turning to post 101, thrust nut 110 can move up and down along the axis of Steering gear 101.When promoting thrust nut 110 along the axis up-and-down movement of Steering gear 101, Steering gear 101 also can be around rotational.Upper and lower bearing 105,115 is connected and fixed by screw thread and cornering resistance simulator housing 104 inner chambers.The inner end surface of upper and lower bearing 105,115 is fixed upper and lower bearing spring retaining sleeve 106,114 respectively.Thrust nut 110 upper/lower terminals are connected with thrust nut lower end spring retaining sleeve 111 with thrust nut upper end spring retaining sleeve 109.The medial surface of upper and lower bearing 105,115 is fixed with spring retaining sleeve 106 and spring retaining sleeve 115 respectively.Upper and lower end spring 107,113 is individually fixed between the spring retaining sleeve 106,109 and between the spring retaining sleeve 111,114.Upper and lower end rubber coating 108,112 is bonded on two end faces up and down of thrust nut 110.Upper and lower end spring 107 and 113 has identical rigidity.Regulating upper and lower bearing 105 and 115 can make the upper and lower end spring have identical installation parameter.Same upper and lower end rubber coating 108,112 has identical mechanics parameter equally.
When rotating Steering gear 101, thrust nut 110 moves up and down along axis.When supposing that Steering gear 101 clockwise rotates, thrust nut 110 moves down along axis.Thrust nut 110 compresses lower end springs 113 at this moment, and upper end springs 107 simultaneously stretch.107,113 pairs of thrust nuts 110 of upper and lower end spring apply elastically-deformable restoring force, this restoring force forms the resistance that thrust nut 110 is moved down, this resistance hinders Steering gear 101 by thrust nut 110 and rotates, be delivered on the bearing circle by Steering gear 101, become the cornering resistance of bearing circle.This Resistance Value is decided by the rigidity and the deflection of upper and lower side spring, and the angle that clockwise rotates along with bearing circle increases and increases.When bearing circle forwarded a certain angle to, fixing lower end rubber coating 112 lower surfaces, thrust nut 110 lower ends contacted with undersetting 115, and rubber coating will be compressed.At this moment, be rotated further bearing circle, then lower end rubber coating 112 will be compressed simultaneously with lower end spring 113, and can be regarded as the spring stiffness that is compressed the thrust nut lower end increases, and therefore, cornering resistance increases sooner.When the bearing circle cw forwarded a certain angle to, lower end rubber coating 112 can not be compressed again, and turn to and reach the cw maximum position this moment, and prompting driver bearing circle rotates near possible steering lock.When rotating counterclockwise bearing circle, cornering resistance increase situation and cw situation are similar.Only upper end spring 107 and upper end rubber coating 108 is in compression and lower end spring 113 is in extended state.Because last lower spring has identical mechanics parameter, rubber also has identical mechanics parameter up and down, when the angle of steering wheel rotation equates with the angular dimension that clockwise rotates bearing circle when conter clockwise, the cornering resistance value equal and opposite in direction that spring and rubber provided, direction is opposite.
When upper end rubber coating 108 and lower end rubber coating 112 are separately fixed on the upper and lower bearing 105,115, also can realize above function.
When turn to finish after, the release direction dish because thrust nut 110 two ends are subjected to force unbalance, under the effect of the elastic deformation restoring force of spring and rubber coating, thrust nut 110 will be got back near the balance position., can drive Steering gear 101 and rotate when Steering gear 101 moves at thrust nut 110, also turn to the stress balance position.According to the mechanical system characteristic as can be known, Steering gear 101 rotating balance positions are the initial positions before turning to, and also are the centering positions (being midway location) of bearing circle.Therefore, under spring and rubber coating application force, bearing circle just finally returns near midway location, thereby has realized steering reversal.
According to above principle, present embodiment can produce one makes bearing circle return positive moment, thereby makes bearing circle realize turning to the function of " road feel " and steering reversal.Turn to " road feel ", be meant that can be subjected to one when the driver controls bearing circle and departs from midway location hinders the resisting moment that bearing circle departs from.Steering reversal is meant the existence because of steering feel, thereby when the control bearing circle departed from the moment disappearance of midway location, bearing circle was got back to midway location under the effect of resisting moment.
Embodiment two, have one when midway location makes Vehicular turn and better turn to " road feel " departing from,, on the basis of embodiment one, increase a friction drag resilient sleeve as most preferred embodiment of the present invention in order to make bearing circle, as Fig. 2,, shown in 3,4.Friction drag resilient sleeve 120 ring sets are in the outside of Steering gear 101, friction drag resilient sleeve 120 is fixed on the setting nut 118 (not shown among Fig. 2) by regulating bolt 119, setting nut 118 is fixed on the housing 104, thereby friction drag resilient sleeve 120 is fixed on the housing 104.Friction drag resilient sleeve 120 is resilient sleeve of an opening, and shown in Fig. 3,4, its inwall posts friction lining 121, and opening grasswort place has two holes.Near setting nut 118 be through hole 122, be tapped bore 123 away from another hole of setting nut 118, screw thread arranged in it and be connected with friction drag adjusting bolt 119.Friction drag adjusting bolt 119 passes through hole 122 and is connected with friction drag setting nut 118.When bolt 119 is regulated in rotation, the grasswort that is threaded hole 123 of friction drag resilient sleeve 120 will move along the axis of regulating bolt 119.Because the 120 elastomeric effects of friction drag resilient sleeve, it has the grasswort outward flange of through hole 122 and the inner end surface of setting nut 118 can compress, and the grasswort that promptly has through hole can not move with the rotation of regulating bolt 119.Can compress or disengaging friction resistance resilient sleeve 120 so the pivoting friction resistance is regulated bolt 119, and then adjust the frictional resistance value that is applied on the Steering gear 101.
Embodiment three, as shown in Figure 5, different with embodiment one, two is has only one as the spring of first elastic component, is fixed on the upper side or the downside of thrust nut 110, and the rigidity of the rigidity of the stretching of this spring during with compression is identical.When steering wheel rotation, can produce steering resisting torque equally, realize turning to the function of " road feel " and steering reversal.
First elastic component in the foregoing description can also be torsion spring, and an end of torsion spring is fixed on the shell, and the other end is fixed on the Steering gear, produces corresponding deformation with the angle of the rotation of Steering gear, hinders the rotation of Steering gear, thereby produces steering resisting torque.
Embodiment four, present embodiment are that the foregoing description is applied in an example in the steer-by-wire mechanism of vehicle, shown in Fig. 6,7, steer-by-wire mechanism comprises bearing circle 1, cornering resistance analog machine 10, steering wheel position sensor 2, wheel flutter drive motor 5, steer wheel position sensor 7, wheel flutter 8, wheel flutter driving device 9 and ECU.Cornering resistance analog machine 10 1 end closure dishes 1, other end closure dish position transduser 2.Wheel flutter drive motor 5 can be brush DC wheel flutter drive motor, wheel flutter driving device 9 can be rack and pinion steering gear, steering wheel position sensor 2 and steer wheel position sensor 7 can be selected the Hall-type angular transducer for use, have good reliability, advantage of high precision.The major control signal that transmits comprises: steering wheel position signal a, vehicle velocity signal c, wheel flutter motor drive signal e, steer wheel position signal g.According to steering wheel position signal a and vehicle speed signal c, ECU can calculate the steer wheel position signal of expectation, and e drives steer motor 5 by output wheel flutter motor drive signal, can realize the rotation of wheel flutter 8 by steering transmission linkage 9.Utilize steer wheel position signal g to carry out controlled reset, realize that wheel flutter concerns that by certain gear ratio following bearing circle rotates, and promptly turns to function steer motor 5.Cornering resistance analog machine 10 can be realized simulating turns to " road feel " and return function.
Fig. 8 is the bearing circle resisting moment of the steer-by-wire mechanism most preferred embodiment of using the cornering resistance analog machine and the relation of steering wheel angle.Choose the spring and the rubber coating of suitable parameters, direction initialization is faced left gyration for negative, and the right-hand rotation angle is for just.Arrow in the curve is represented that bearing circle rotates counterclockwise and is forwarded left-hand rotation end position and then cw to from the right-hand rotation end position and forward to the whole process of right-hand rotation end position from the left-hand rotation end position and turn to resistance with the bump steer process.Slope of a curve is by the rigidity decision of spring and rubber coating.Resisting moment when A point expression bearing circle turns to the right-hand rotation end position, behind the release direction dish, resisting moment can sharply drop to the B point, and the BC segment table shows the period that spring and rubber coating concur, and slope is bigger.The CD section is the period that spring works separately, and slope is less.Can find out that on scheming just return 0 degree when being midway location at bearing circle, resisting moment is not 0, this is because be enclosed within the effect of the friction drag resilient sleeve of Steering gear outside.The DE section also is the period that spring and rubber coating concur, and slope is bigger.Resisting moment when E point expression bearing circle turns to the left-hand rotation end position.When limit on the right-right-hand limit was rotated, the variation principle of resisting moment was identical by left-limit.The spring of design different parameters and rubber coating and adjusting cornering resistance friction size can obtain different cornering resistance situations of change, promptly different " road feels ".
In sum, steer-by-wire of the present invention mechanism to turn to " road feel " and steering reversal function to realize simple, reliable; Reduced the requirement of steer-by-wire mechanism to motor and sensor, system hardware constitutes simple, and cost reduces.Steer-by-wire core control algorithm only relates to and turns to function, and control is simple, realizes having reduced the research and development difficulty of electron steering ECU easily.
Claims (13)
1. a line of vehicles passes steering hardware, comprising:
Bearing circle;
Steering wheel position sensor is used for the turned position of perceived direction dish;
Wheel flutter;
Wheel flutter drive motor and wheel flutter driving device, described wheel flutter drive motor is accepted control, rotates to change direct of travel by described wheel flutter actuator drives wheel flutter;
It is characterized in that also comprising:
Electronic control unit is used to respond signal and the vehicle velocity signal that steering wheel position sensor is exported, and according to the wheel flutter desired locations that calculates, the running of control wheel flutter drive motor is to drive the wheel flutter rotation;
The cornering resistance analog machine, comprise the tumbler and first elastic component, described tumbler one end is connected with bearing circle and rotates with the rotation of bearing circle, the described tumbler other end is connected with steering wheel position sensor, described first elastic component produces corresponding elastic deformation under the tumbler rotary action, this elastically-deformable restoring force acts on tumbler and produces the moment that tumbler is rotated.
2. line of vehicles as claimed in claim 1 passes steering hardware, and it is characterized in that: described cornering resistance analog machine also comprises in order to hold the housing of the tumbler and first elastic component.
3. line of vehicles as claimed in claim 2 passes steering hardware, it is characterized in that: described first elastic component is a spring, described tumbler is columniform Steering gear, and described Steering gear rotates around central axis with the rotation of bearing circle, also comprises the bearing that is connected between Steering gear and the housing.
4. line of vehicles as claimed in claim 3 passes steering hardware, it is characterized in that: described cornering resistance analog machine also comprises thrust nut, described thrust nut is connected with Steering gear by screw thread, and can be round mobile along Steering gear axis direction by rotating, the two ends of described spring are separately fixed on thrust nut and the housing.
5. line of vehicles as claimed in claim 4 passes steering hardware, it is characterized in that: also comprise upper end second elastic component, lower end second elastic component and the upper bracket that is fixed on the housing medial surface, undersetting, described upper end second elastic component and lower end second elastic component are separately fixed on two opposite faces of thrust nut, or be separately fixed at described on, on the undersetting, be used for when thrust nut is moved to certain position, make thrust nut push upper end second elastic component or make thrust nut push lower end second elastic component and make it that elastic deformation take place with undersetting with upper bracket, described upper end second elastic component is identical with the length of lower end second elastic component, and less than the length of spring.
6. line of vehicles as claimed in claim 5 passes steering hardware, it is characterized in that: described spring comprises upper end spring and lower end spring, the two ends of described upper end spring are separately fixed on the medial surface of the upper side of thrust nut and upper bracket, the two ends of described lower end spring are separately fixed on the medial surface of the downside of thrust nut and undersetting, and the rigidity of described upper end spring and lower end spring is identical identical with length.
7. pass steering hardware as each described line of vehicles in the claim 3 to 6, it is characterized in that: comprise that also ring set is at the friction drag resilient sleeve of Steering gear outside, the adjusting bolt that is fixed on the setting nut on the housing and is used for cooperating with setting nut, described friction drag resilient sleeve has two grassworts, grasswort near setting nut has through hole, away from the tapped bore that grasswort has and the adjusting bolt cooperates of setting nut, the inwall of described friction drag resilient sleeve posts friction lining.
8. pass steering hardware as each described line of vehicles in the claim 1 to 7, it is characterized in that: also comprise the steer wheel position sensor that is used for perception wheel flutter turned position, described electronic control unit response steer wheel position signal, the output feedback control signal is to the wheel flutter drive motor.
9. a line of vehicles passes the cornering resistance analog machine of steering hardware, be used for when bearing circle rotates, producing and act on bearing circle and make bearing circle return the power that just arrives midway location, it is characterized in that: comprise the tumbler and first elastic component, described tumbler one end is used for being connected with bearing circle and rotating with the rotation of bearing circle, described first elastic component produces corresponding elastic deformation under the tumbler rotary action, this elastically-deformable restoring force acts on tumbler and produces the moment that tumbler is rotated.
10. cornering resistance analog machine as claimed in claim 9, it is characterized in that: also comprise the housing that holds the tumbler and first elastic component, described first elastic component is a spring, described tumbler is columniform Steering gear, be used for rotating around central axis, also comprise the bearing that is connected between Steering gear and the housing with the rotation of bearing circle.
11. cornering resistance analog machine as claimed in claim 10, it is characterized in that: also comprise thrust nut, described thrust nut is connected with Steering gear by screw thread, and moves by rotating to come and go along Steering gear axis direction, and the two ends of described spring are separately fixed on thrust nut and the housing.
12. cornering resistance analog machine as claimed in claim 11, it is characterized in that: also comprise upper end second elastic component, lower end second elastic component and the upper bracket that is fixed on the housing medial surface, undersetting, described upper end second elastic component and lower end second elastic component are separately fixed on two opposite faces of thrust nut, or be separately fixed at described on, on the undersetting, be used for when thrust nut is moved to certain position, make thrust nut push upper end second elastic component or make thrust nut push lower end second elastic component and make it that elastic deformation take place with undersetting with upper bracket, described upper end second elastic component is identical with the length of lower end second elastic component, and less than the length of spring; Described spring comprises upper end spring and lower end spring, the two ends of described upper end spring are separately fixed on the medial surface of the upper side of thrust nut and upper bracket, the two ends of described lower end spring are separately fixed on the medial surface of the downside of thrust nut and undersetting, and the rigidity of described upper end spring and lower end spring is identical identical with length.
13. cornering resistance analog machine as claimed in claim 12, it is characterized in that: comprise that also ring set is at the friction drag resilient sleeve of Steering gear outside, the adjusting bolt that is fixed on the setting nut on the housing and is used for cooperating with setting nut, described friction drag resilient sleeve has two grassworts, grasswort near setting nut has through hole, away from the tapped bore that grasswort has and the adjusting bolt cooperates of setting nut, the inwall of described friction drag resilient sleeve posts friction lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100211709A CN100450852C (en) | 2005-06-22 | 2005-06-22 | Steering mechanism for vehicular drive-by-wire system and its steering drag simulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100211709A CN100450852C (en) | 2005-06-22 | 2005-06-22 | Steering mechanism for vehicular drive-by-wire system and its steering drag simulator |
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| CN1883993A true CN1883993A (en) | 2006-12-27 |
| CN100450852C CN100450852C (en) | 2009-01-14 |
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| CNB2005100211709A Active CN100450852C (en) | 2005-06-22 | 2005-06-22 | Steering mechanism for vehicular drive-by-wire system and its steering drag simulator |
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| JP2001114123A (en) * | 1999-10-20 | 2001-04-24 | Koyo Seiko Co Ltd | Steering device for vehicle |
| JP2004231054A (en) * | 2003-01-30 | 2004-08-19 | Honda Motor Co Ltd | Steer-by-wire type steering device |
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