CN101251184A - Control apparatus and control method for transforming gear of electric-controlled mechanical automatic speed transmission - Google Patents
Control apparatus and control method for transforming gear of electric-controlled mechanical automatic speed transmission Download PDFInfo
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- CN101251184A CN101251184A CNA2008100246260A CN200810024626A CN101251184A CN 101251184 A CN101251184 A CN 101251184A CN A2008100246260 A CNA2008100246260 A CN A2008100246260A CN 200810024626 A CN200810024626 A CN 200810024626A CN 101251184 A CN101251184 A CN 101251184A
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Abstract
The invention discloses a control device for the gear shift of an electromechanical automatic transmission of an automobile and a control method thereof; the method includes the following steps that: an output of an ECU is connected to inputs of a gear shift mechanism and a motor drive circuit respectively, and the output of the motor drive circuit is connected with an input of a throttle opening; a left front wheel, a right front wheel, a left back wheel and a right back wheel are provided with a wheel speed sensor respectively, all wheel speed sensors are connected to the input of the ECU; due to the arrangement of wheel speed sensors on four wheels of 2 front wheels and 2 back wheels, the wheel speeds of the four wheels are detected, and the detection values are transmitted to the ECU, thereby whether the automobile is in the running condition or slipping condition with real-time judging by the ECU; meanwhile, the throttle opening can be adjusted according to wheel speed ratios between front and back wheels, which avoids the slipping of wheels, reduces the gear shifting impact while shifting gears, reduces energy consumption, saves energy and protects environment.
Description
Technical field
The present invention relates to the electric control mechanical type automatic speed variator of vehicle, refer in particular to a kind of control gear and controlling method thereof of transforming gear of electric-controlled mechanical automatic speed transmission,
Background technique
In recent years, electric control mechanical type automatic speed variator in the vehicular automatic transmission is used more and more widely, be on the basis of original manual transmission, to install electronic control system additional to realize automobile automatic gear, by electronic technology control friction clutcch and gear transmission automatically according to running state conversion gear.The control gear of transforming gear of electric-controlled mechanical automatic speed transmission as shown in Figure 1, be throttle opening 6 signals of gathering by analyte sensors, electronic control unit (ECU 2) is controlled the operation that corresponding motor-drive circuit 7 operating motors are automatically finished gearshift mechanism 4 by programmed, make choosing, the gear shift action of clutch separation, joint and speed changer, gearshift procedure is finished automatically and the work of motor is coordinated mutually with clutch operating, solved the gear-change operation complicated problems of conventional manual speed changer and improved property of automatic shft.Can be according to driver's the intention (accelerator pedal, brake petal, selector switch etc.) and the state (engine speed, input shaft rotating speed, the speed of a motor vehicle, gear) of vehicle, according to the rule of setting (schedule, clutch in conjunction with rule etc.), by means of corresponding actuator's (fuel feeding actuator, block selecting actuator, clutch separation and combining mechanism), the power transmission system (motor, clutch, speed changer) of vehicle is carried out united control.
The defective of the control gear of transforming gear of electric-controlled mechanical automatic speed transmission shown in Figure 1 has:
(1) on wet and slippery road surface, when electric-controlled mechanical automatic speed transmission carries out transforming gear, because ground attaching coefficient is little, skidding appears in tire easily, vehicle is by the judgement to wheel speed to the judgement of the speed of a motor vehicle, when tire generation skidding, the speed of a motor vehicle that ECU 2 calculates by wheel speed is than actual vehicle speed height, ECU 2 constantly obtains the speed of a motor vehicle (actual is wheel speed) and compares with the speed of a motor vehicle of setting, the speed of a motor vehicle of sending when sensor (wheel speed) is during with setting value generation gear shift coupling, ECU 2 sends the instruction to gearshift mechanism 4, but since by sensor to the speed of a motor vehicle (wheel speed) do not conform to the actual velocity of vehicle, the result who causes is that mechanical electronic automatic transmission device has been carried out unnecessary gear-change operation.When the speed of a motor vehicle (wheel speed) of sensor does not conform to actual velocity, cause huge impact to transmission gear, and because engine speed and power train input shaft rotating speed gap big, the load that acts on the clutch increases, and causes producing on the clutch a large amount of heats.When driving force reduces owing to upshift operation or when close the throttle, disconnecting clutch and similar operation were carried out, automobile was easy to generate impact forward, smoothness, the travelling comfort of automobile go down to a certain extent.Subsequently, because the reduction of the detected speed of a motor vehicle (wheel speed), ECU 2 detects the speed of a motor vehicle (wheel speed) and load conforms to the condition of lowering category, and the operation that lowers category is performed, cause automated mechanical transmission in the control that constantly upgrades, lowers category of a certain critical value, caused the continuous variation of gear.
(2) in the process of tyre slip, because throttle opening 6 disconnects mutually with the actual demand aperture, causes that some form with heat energy of power that motor sends consumes, and causes the excess impact of mechanical part simultaneously, cause the increase of power consumption, be unfavorable for energy-conservation and environmental protection.
Summary of the invention
The control gear and the controlling method that the purpose of this invention is to provide a kind of transforming gear of electric-controlled mechanical automatic speed transmission, can control the aperture of closure according to different pavement behavior, reduce the skidding of tire simultaneously, ECU can select to send suitable opportunity the transforming gear instruction, to reach energy-conservation and purpose environmental protection.
The technological scheme that the control gear of transforming gear of electric-controlled mechanical automatic speed transmission adopts is: comprise the input that the output of ECU is connected respectively to gearshift mechanism and motor-drive circuit, the output of motor-drive circuit connects the input of throttle opening, a wheel speed sensors respectively is installed on the near front wheel, off-front wheel, left rear wheel, off hind wheel, each wheel speed sensors is connected to the input of ECU.
The technological scheme that the controlling method of the control gear of transforming gear of electric-controlled mechanical automatic speed transmission adopts is: in turn include the following steps:
(A) the measured signal of each wheel speed sensors on the near front wheel, off-front wheel, left rear wheel, the off hind wheel is imported among the ECU;
(B) calculate the mean value of left and right two front-wheel wheel speeds by ECU, the mean value of this mean value and left and right two trailing wheel wheel speeds is compared, the threshold value that exceeds the ECU inner setting when the wheel speed of front-wheel and trailing wheel, ECU sends pulse-width signal and gives motor-drive circuit, and throttle opening is controlled;
(C) output power of earlier constantly adjusting motor by motor-drive circuit reaches the best power coupling of vehicle, compare according to the ratio of front and back wheel speed and the threshold value of ECU inner setting again, constantly adjust throttle opening, finally reach the desired throttle opening of gas pedal;
(D) ECU constantly detects wheel speed simultaneously, and the wheel speed of this moment is the actual vehicle speed of vehicle, and when the speed of a motor vehicle reached the setting speed of a motor vehicle of transforming gear, ECU sent the transforming gear instruction to gearshift mechanism, realized the smooth shifting of gear.
The present invention is by being provided with wheel speed sensors on four wheels in front and back, four wheel speeds are detected, but will detect numerical value is in by ECU real-time judge vehicle and travels or skid situation, adjust throttle opening by front and back wheels speed ratio value simultaneously, prevent wheel-slip, make automobile in the transforming gear process, reduce shifting shock, reduced energy consumption, have energy saving and environmental protection effect.
Description of drawings
Fig. 1 is the control gear connection diagram of transforming gear of electric-controlled mechanical automatic speed transmission in the background technique.
Fig. 2 is the control gear connection diagram of transforming gear of electric-controlled mechanical automatic speed transmission among the present invention.
Among the figure: 1. off-front wheel, 2.ECU, 3. off hind wheel, 4. gearshift mechanism, 5. left rear wheel, 6. throttle opening, 7. motor-drive circuit, 8. the near front wheel.
Embodiment
As shown in Figure 1, on the near front wheel 8, off-front wheel 1, left rear wheel 5 and the off hind wheel 3 of the vehicle that travels, a wheel speed sensors is installed respectively, each wheel speed sensors is connected on the input end of ECU 2, the output of ECU 2 is connected respectively to the input of gearshift mechanism 4 and motor-drive circuit 7, and the output of motor-drive circuit 7 connects the input of throttle opening 6.ECU2 is to the near front wheel 8, off-front wheel 1, left rear wheel 5, off hind wheel 3 carries out wheel speed and detects, make the near front wheel 8, off-front wheel 1, left rear wheel 5, each wheel speed sensors on the off hind wheel 3 imports each wheel speed signal into ECU 2, ECU 2 calculates wheel speed signal, draw the mean value of the wheel speed of the near front wheel 8 and off-front wheel 1, mean value with the wheel speed of this mean value and left rear wheel 5 and off hind wheel 3 compares again, if the wheel speed of front-wheel and trailing wheel exceeds the threshold value of ECU2 inner setting, wheel generation skidding is described, at this moment, ECU2 sends pulse-width signal and gives motor-drive circuit 7, motor-drive circuit 7 control throttle openings 6, or else the disconnected output power of adjusting motor, reach the best power coupling of automobile, constantly adjust throttle opening 6 according to the ratio of front and back wheel speed then, finally reach the desired throttle opening 6 of gas pedal, the method is used for preventing wheel-slip, ECU 2 constantly detects wheel speed simultaneously, the wheel speed of this moment is the actual vehicle speed of vehicle, be lower than the threshold value of ECU2 inner setting when the wheel speed of detected front-wheel of ECU2 and trailing wheel, and when the speed of a motor vehicle reaches the setting speed of a motor vehicle of transforming gear value of ECU2 inner setting, ECU2 and then gearshift mechanism 4 controlled, send the transforming gear instruction, realize the smooth shifting of gear.
Claims (2)
1. the control gear of a transforming gear of electric-controlled mechanical automatic speed transmission, comprise the input that the output of ECU (2) is connected respectively to gearshift mechanism (4) and motor-drive circuit (7), the output of motor-drive circuit (7) connects the input of throttle opening (6), it is characterized in that: on the near front wheel (8), off-front wheel (1), left rear wheel (5), off hind wheel (3), a wheel speed sensors is installed respectively, each wheel speed sensors is connected to the input of ECU (2).
2. the controlling method of the control gear of a transforming gear of electric-controlled mechanical automatic speed transmission as claimed in claim 1 is characterized in that in turn including the following steps:
(A) the measured signal of each wheel speed sensors on the near front wheel (8), off-front wheel (1), left rear wheel (5), the off hind wheel (3) is input among the ECU (2);
(B) calculate the mean value of left and right two front-wheel wheel speeds by ECU (2), the mean value of this mean value and left and right two trailing wheel wheel speeds is compared, the threshold value that exceeds ECU (2) inner setting when the wheel speed of front-wheel and trailing wheel, ECU (2) sends pulse-width signal and gives motor-drive circuit (7), and throttle opening (6) is controlled;
(C) output power of earlier constantly adjusting motor by motor-drive circuit (7) best power that reaches vehicle mates, compare according to the ratio of front and back wheel speed and the threshold value of ECU (2) inner setting again, constantly adjust throttle opening (6), finally reach the desired throttle opening of gas pedal (6);
(D) ECU (2) constantly detects wheel speed simultaneously, and the wheel speed of this moment is the actual vehicle speed of vehicle, and when the speed of a motor vehicle reached the setting speed of a motor vehicle of transforming gear, ECU (2) sent the transforming gear instruction to gearshift mechanism (4), realizes the gear gear shift.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100246260A CN101251184A (en) | 2008-03-28 | 2008-03-28 | Control apparatus and control method for transforming gear of electric-controlled mechanical automatic speed transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100246260A CN101251184A (en) | 2008-03-28 | 2008-03-28 | Control apparatus and control method for transforming gear of electric-controlled mechanical automatic speed transmission |
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| Publication Number | Publication Date |
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| CN101251184A true CN101251184A (en) | 2008-08-27 |
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| CNA2008100246260A Pending CN101251184A (en) | 2008-03-28 | 2008-03-28 | Control apparatus and control method for transforming gear of electric-controlled mechanical automatic speed transmission |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128257A (en) * | 2011-03-21 | 2011-07-20 | 重庆长安汽车股份有限公司 | Method for controlling sudden acceleration tyre slipping gear shifting for AMT (automatic manual transmission) vehicle |
| CN102749208A (en) * | 2012-07-24 | 2012-10-24 | 潍柴动力股份有限公司 | Road testing method and system for achieving automatic speed changing of vehicle |
| CN104110490A (en) * | 2013-04-16 | 2014-10-22 | 重庆长安汽车股份有限公司 | DCT (dual clutch transmission) vehicle braking tire slipping gear-shifting control method |
| CN114857259A (en) * | 2022-05-24 | 2022-08-05 | 绿传(北京)汽车科技股份有限公司 | Automatic transmission gear shifting control method without rotation speed sensor |
-
2008
- 2008-03-28 CN CNA2008100246260A patent/CN101251184A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128257A (en) * | 2011-03-21 | 2011-07-20 | 重庆长安汽车股份有限公司 | Method for controlling sudden acceleration tyre slipping gear shifting for AMT (automatic manual transmission) vehicle |
| CN102749208A (en) * | 2012-07-24 | 2012-10-24 | 潍柴动力股份有限公司 | Road testing method and system for achieving automatic speed changing of vehicle |
| CN102749208B (en) * | 2012-07-24 | 2016-05-11 | 潍柴动力股份有限公司 | A kind of actual road test method and system of realizing vehicle automatic transmission |
| CN104110490A (en) * | 2013-04-16 | 2014-10-22 | 重庆长安汽车股份有限公司 | DCT (dual clutch transmission) vehicle braking tire slipping gear-shifting control method |
| CN114857259A (en) * | 2022-05-24 | 2022-08-05 | 绿传(北京)汽车科技股份有限公司 | Automatic transmission gear shifting control method without rotation speed sensor |
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Open date: 20080827 |