CN209458392U - A kind of wet clutch gearbox gear-shift process buffers control system - Google Patents
A kind of wet clutch gearbox gear-shift process buffers control system Download PDFInfo
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- CN209458392U CN209458392U CN201821732086.7U CN201821732086U CN209458392U CN 209458392 U CN209458392 U CN 209458392U CN 201821732086 U CN201821732086 U CN 201821732086U CN 209458392 U CN209458392 U CN 209458392U
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000872 buffer Substances 0.000 title claims abstract description 19
- 230000008569 process Effects 0.000 title claims abstract description 18
- 230000001133 acceleration Effects 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims description 52
- 239000003921 oil Substances 0.000 claims description 38
- 230000005540 biological transmission Effects 0.000 claims description 33
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 230000001143 conditioned effect Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 abstract 2
- 238000011156 evaluation Methods 0.000 description 16
- 238000013016 damping Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011548 physical evaluation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
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Abstract
The utility model relates to a kind of wet clutch gearbox gear-shift process buffers control systems comprising step: after starting device, carry out the self-test of equipment；Judge whether oil pressure is less than preset upper limit value: modifying the peak value of buffering boost phase if oil pressure is greater than upper limit value, and enter in next step；It is on the contrary then be directly entered in next step；Pilot oil pressure difference and manipulation oil pressure cntrol signal voltage value are calculated by fuzzy；Manipulation oil pressure cntrol signal voltage value is input in wet clutch gearbox, wet clutch starts to combine, the acceleration and binding time during acquisition wet clutch combination；Wet clutch gearbox shifting quality is evaluated using the binding time and acceleration of wet clutch, if meeting preset interpretational criteria so control process terminates, otherwise the peak value of buffering boost phase is modified and buffers the time of boost phase.The utility model extends the service life of wet clutch gearbox, improves riding comfort and ride comfort.
Description
Technical Field
The utility model relates to a control system of wet clutch gearbox especially relates to a wet clutch gearbox gear shift process buffer control system.
Background
Wet clutch transmissions are widely used on heavy vehicles due to their advantages of low wear, long service life, smooth coupling, stable performance, low noise, etc. The shift quality of a wet clutch transmission has a direct relationship to the fuel economy, dynamics, smoothness and ride comfort of the vehicle. The gear shifting quality is an important content in the technical development process of the automatic transmission, and good gear shifting quality means that the vehicle can shift gears smoothly under the condition of ensuring the service life of the components of the power transmission system of the vehicle and the dynamic property of the vehicle. If in the process of shifting gears, the change of the oil pressure of the clutch can be reasonably utilized, the torque disturbance of the output shaft of the transmission can be reduced, the shifting can be more stable, and the quality of the vehicle is also improved. If the clutch is required to be combined at a proper speed, if the combination is too slow in the combination process, the sliding and rubbing time of the wet clutch is prolonged, so that the service life of the clutch is reduced; the combination speed is too fast, so that the vehicle can generate great vibration in the gear shifting process, the stability and the smoothness of the vehicle can be influenced, and the riding comfort can be reduced.
The clutch oil filling process is divided into three stages: three stages of quick oil filling, buffer boosting and step boosting. The peak value of the rapid oil filling stage is V1The time of the rapid oil-filling stage is t1At the stage, the hydraulic cylinder starts to charge oil, the distance between the clutches is gradually eliminated, and the driving plate and the driven plate are not combined at the stage, so that the combination time does not influence the gear shifting quality of the transmission, but influences the power interruption, and therefore, the time at the stage is short; the peak value of the buffer boosting stage is V2The time of the buffer boosting stage is t2And at the stage, the driving plate and the driven plate start to contact to generate sliding friction, the impact is reduced due to overlong combination time, the vehicle is smoother, but the sliding friction work is increased, and the service life of the clutch is shortened. The combination time is short, so that the sliding abrasion work is reduced, the service life of the clutch is prolonged, but the impact degree of the vehicle is increased, and the smoothness of the vehicle is influenced; the peak value of the step-up stage is V1The step-up phase has a time t2At this stage, the clutch is fully engaged and the pressure increases sharply, which occurs after the shift and has no effect on the shift quality.
The research on the gear shifting quality mainly comprises objective evaluation and subjective evaluation, wherein the subjective evaluation is driver evaluation; the objective evaluation mainly refers to objective physical evaluation, and the objective evaluation mainly refers to two indexes of impact J and sliding abrasion W. The impact degree J is the change rate of the longitudinal direction and the speed, and the impact degree not only can reflect the comfortable feeling of a driver riding in the vehicle, but also can reflect the running condition of the vehicle and the change condition of the load of a vehicle dynamic transmission system in the gear shifting process of the vehicle. The measurement of the clutch sliding wear work is complicated and inaccurate, so the acceleration and the clutch combination time are used as the evaluation indexes of the clutch quality, when the gear shifting quality reaches the set requirement, the operation is finished, if the gear shifting quality cannot reach the requirement, the peak value and the time of the buffer boosting stage are changed, and the gear shifting quality is continuously evaluated.
The existing damping control method for the gear shifting process of the wet clutch transmission generally applies the combination of valve bodies, the damping effect is relatively limited, and the evaluation criterion is not introduced into the existing damping control, and the evaluation result is not fed back to a damping control system.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide a wet clutch transmission gear shift process buffer control system, which can effectively prolong the service life of the wet clutch transmission and improve the riding comfort and smoothness of the vehicle.
In order to achieve the purpose, the utility model adopts the following technical proposal: a buffer control system for the gear shifting process of a wet clutch gearbox comprises a transmission mechanism, the wet clutch gearbox, a data acquisition device, an execution mechanism and a control mechanism; the transmission mechanism is used for providing power for the wet clutch gearbox, and the data acquisition device is used for acquiring state data of the wet clutch gearbox; the actuating mechanism is used for controlling the working states of the transmission mechanism and the wet clutch gearbox; the control mechanism is used for controlling the working states of the transmission mechanism and the actuating mechanism.
Further, the transmission mechanism comprises a motor, a dynamometer and a braking device; the motor is controlled by the control mechanism to act, and the output end of the motor is connected with the power end of the wet clutch gearbox; the output end of the wet clutch gearbox is connected with the brake device through the dynamometer, and the brake device is also connected with the actuating mechanism; the data acquisition device is arranged between the output end of the motor and the wet clutch gearbox, and the data acquisition device is also arranged at the output end of the wet clutch gearbox.
Further, the data acquisition device comprises a data acquisition box, a data acquisition card, a rotating speed torque sensor, a gear shifting force sensor, a gear shifting displacement sensor, a temperature sensor and an acceleration sensor; the rotating speed torque sensor is arranged between the output end of the motor of the transmission mechanism and the wet clutch gearbox, and the gear shifting force sensor, the gear shifting displacement sensor, the temperature sensor and the acceleration sensor are all arranged on the output shaft of the wet clutch gearbox; all the sensors transmit the acquired data to the data acquisition card, the data acquisition card is arranged in the data acquisition box, and the acquired sensor signals are conditioned by the data acquisition box and then transmitted to the control mechanism.
Further, the control mechanism comprises a frequency converter, a controller and a computer; the computer is used for transmitting control information to the controller and the frequency converter; the controller also receives a sensor signal transmitted by a data acquisition box in the data acquisition device, and controls the frequency of the frequency converter according to the received signal so as to control the rotating speed of the motor; the controller also controls the operation of the actuator and the actuation of the wet clutch gearbox in response to the received signals.
Furthermore, the actuating mechanism comprises a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, an electro-hydraulic proportional valve, a pump station oil tank, an oil return pump, a first driving circuit and a second driving circuit; control signals sent by a controller in the control mechanism are respectively transmitted to the first driving circuit, the second driving circuit, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve; the electro-hydraulic proportional valve is driven by the second driving circuit to act, and the control oil circuit of the pump station controls the combination or separation of the wet clutch through the first electromagnetic valve and the electro-hydraulic proportional valve; the first driving circuit drives a gear shifting electromagnetic valve in the wet clutch gearbox to act to shift gears after receiving the control signal; the second electromagnetic valve is used for controlling the on-off of a lubricating oil path, and the third electromagnetic valve is used for controlling the on-off of a braking oil path between the third electromagnetic valve and a braking device in the transmission mechanism; and oil in the lubricating oil path, the operating oil path, the braking oil path and the wet clutch gearbox returns to the pump station through the oil return pump.
The utility model discloses owing to take above technical scheme, it has following advantage: the utility model discloses carry out buffer control when shifting to the wet clutch gearbox, prolonged the life of wet clutch gearbox to the riding comfort and the ride comfort of vehicle have been improved.
Drawings
Fig. 1 is a schematic structural diagram of the control system of the present invention;
FIG. 2 is a flow chart of a control method of the present invention;
fig. 3 is the utility model discloses shift quality evaluation flow chart schematic.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the utility model provides a wet clutch gearbox gear shift process buffer control system, it includes drive mechanism, wet clutch gearbox, data acquisition device, actuating mechanism and control mechanism. The transmission mechanism is used for providing power for the wet clutch gearbox, and the data acquisition device is used for acquiring state data of the wet clutch gearbox. The actuating mechanism is used for controlling the working states of the transmission mechanism and the wet clutch gearbox; the control mechanism is used for controlling the working states of the transmission mechanism and the actuating mechanism.
In a preferred embodiment, the transmission mechanism comprises an electric motor, a dynamometer and a braking device. The motor is controlled by the control mechanism to act, and the output end of the motor is connected with the power end of the wet clutch gearbox; the output end of the wet clutch gearbox is connected with a brake device through a dynamometer, and the brake device is also connected with an actuating mechanism. The data acquisition device is arranged between the output end of the motor and the output end of the wet clutch gearbox, and the data acquisition device is also arranged at the output end of the wet clutch gearbox.
In a preferred embodiment, the data acquisition device comprises a data acquisition box, a data acquisition card, a rotating speed and torque sensor, a gear shifting force sensor, a gear shifting displacement sensor, a temperature sensor and an acceleration sensor. The gear shifting force sensor, the gear shifting displacement sensor, the temperature sensor and the acceleration sensor are arranged on an output shaft of the wet clutch gearbox and used for collecting signals such as rotating speed, torque, gear shifting force, gear shifting displacement, temperature, acceleration and load. All the sensors transmit the acquired data to the data acquisition card, the data acquisition card is arranged in the data acquisition box, the acquired sensor signals are conditioned by the data acquisition box and then transmitted to the control mechanism, and the control mechanism sends corresponding control signals outwards according to the received signals.
In a preferred embodiment, the control mechanism includes a frequency converter, a controller, and a computer. The computer is used for transmitting control information to the controller and the frequency converter; the controller also receives a sensor signal transmitted to the data acquisition box in the data acquisition device, and controls the frequency of the frequency converter according to the received signal so as to control the rotating speed of the motor. The controller also controls the operation of the actuator and the actuation of the wet clutch transmission in response to the received signals.
In a preferred embodiment, the actuator comprises a first solenoid valve, a second solenoid valve, a third solenoid valve, an electro-hydraulic proportional valve, a pump station oil tank, a return oil pump, a first driving circuit and a second driving circuit. Control signals sent by a controller in the control mechanism are respectively transmitted to the first driving circuit, the second driving circuit, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve. The electro-hydraulic proportional valve is driven by the second driving circuit to act, and the control oil circuit of the pump station controls the combination or separation of the wet clutch through the first electromagnetic valve and the electro-hydraulic proportional valve. The first driving circuit drives a gear shifting electromagnetic valve in the wet clutch gearbox to act to shift gears after receiving the control signal; the second electromagnetic valve is used for controlling the on-off of the lubricating oil path, and the third electromagnetic valve is used for controlling the on-off of the braking oil path between the second electromagnetic valve and the braking device; and the oil in the lubricating oil path, the operating oil path, the braking oil path and the wet clutch gearbox returns to a pump station through an oil return pump.
The first driving circuit and the second driving circuit are both composed of a constant current output chip and a peripheral power MOS, and the constant current output chip is a TLE7242G chip produced by Infineon company.
As shown in fig. 2, the present invention further provides a method for damping the shift process of the wet clutch transmission, which comprises the following steps:
1) after starting the equipment, carrying out self-checking on the equipment, if the equipment is normal, combining the wet clutch, outputting a rotating speed signal, a torque signal and an oil pressure signal after combining the wet clutch, and entering the next step; if not, returning to carry out equipment self-checking again;
2) judging whether the oil pressure is smaller than a preset upper limit value: if the oil pressure is greater than the upper limit value, modifying the peak value of the buffer boosting stage, and entering the next step; otherwise, directly entering the next step;
3) calculating an operating oil pressure difference delta p and an operating oil pressure control signal voltage difference delta V through a fuzzy PID;
Δp＝p1-p2，
wherein p is1For a preset desired operating oil pressure, p2Is the actual collected operating oil pressure.
The voltage value V of the control oil pressure signal is as follows:
V＝V1+ΔV
wherein, V1For a preset voltage value of the control signal。
4) Inputting a voltage value V of an operating oil pressure control signal into a gearbox of a wet clutch, starting combination of the wet clutch, and collecting acceleration and combination time during combination of the wet clutch;
5) evaluating the gear shifting quality of the wet clutch gearbox by utilizing the combination time and the acceleration of the wet clutch, finishing the control process if the preset evaluation criterion is met, otherwise modifying the peak value of the buffer boosting stage and the time of the buffer boosting stage, and returning to the step 2).
In the step 5), as shown in fig. 3, the method for evaluating the gear shifting quality of the wet clutch transmission includes the following steps:
5.1) determining the weight w of the acceleration a and the binding time taAnd wt；
5.2) coupling time, acceleration and weight w of the wet clutchaAnd wtEvaluating the four parameters by using a gray clustering method to obtain a clustering result, comparing the clustering result with a preset evaluation criterion to obtain four evaluation results of 'good', 'general' and 'poor', and if the evaluation results are 'good' and 'good', ending the control process; if the output result is 'normal' and 'poor', the peak value of the buffer boosting phase and the time of the buffer boosting phase are returned to be modified, and the evaluation is carried out again until the 'good' or 'good' evaluation result is met.
In the step 5.1), the weight w of the acceleration a and the combination time t is solved by adopting an entropy weight methodaAnd wt：
5.1.1) acquiring original data of three groups of accelerations a and combination time t;
5.1.2) weighting of the acceleration a and the integration time taAnd wtCarrying out normalization processing by adopting a critical value method to obtain a matrix as follows: p ═ pij]m×n(ii) a Wherein n is the number of the clustering objects; m is the number of clustering indexes: i 1,2,. n, j 1,2,. m.
5.1.3) calculating the entropy and the weight to obtain the corresponding weight.
In the step 5.2), gray clustering is adopted for evaluation, the gear shifting quality is divided into four grades of "good", "general" and "poor", and a corresponding whitening weight function is established.
If parameterFor the gray clustering coefficient of the clustering object i belonging to the gray class k, setThen the object i is said to belong to the gray class k*(ii) a Wherein,represents k*Is the maximum value of k and is,is thatIs measured.
Above-mentioned each embodiment only is used for explaining the utility model discloses, the structure, size, the setting position and the shape of each part all can change to some extent on the basis of the technical scheme of the utility model discloses on the basis of technical scheme, all according to the utility model discloses the principle is to the improvement and the equivalence transform that individual part goes on, all should not exclude the utility model discloses a protection scope is outside.
Claims (4)
1. A wet clutch gearbox gear shift process buffer control system is characterized in that: the wet clutch transmission device comprises a transmission mechanism, a wet clutch transmission case, a data acquisition device, an actuating mechanism and a control mechanism; the transmission mechanism is used for providing power for the wet clutch gearbox, and the data acquisition device is used for acquiring state data of the wet clutch gearbox; the actuating mechanism is used for controlling the working states of the transmission mechanism and the wet clutch gearbox; the control mechanism is used for controlling the working states of the transmission mechanism and the actuating mechanism;
the transmission mechanism comprises a motor, a dynamometer and a braking device; the motor is controlled by the control mechanism to act, and the output end of the motor is connected with the power end of the wet clutch gearbox; the output end of the wet clutch gearbox is connected with the brake device through the dynamometer, and the brake device is also connected with the actuating mechanism; the data acquisition device is arranged between the output end of the motor and the wet clutch gearbox, and the data acquisition device is also arranged at the output end of the wet clutch gearbox.
2. The system of claim 1, wherein: the data acquisition device comprises a data acquisition box, a data acquisition card, a rotating speed torque sensor, a gear shifting force sensor, a gear shifting displacement sensor, a temperature sensor and an acceleration sensor; the rotating speed torque sensor is arranged between the output end of the motor of the transmission mechanism and the wet clutch gearbox, and the gear shifting force sensor, the gear shifting displacement sensor, the temperature sensor and the acceleration sensor are all arranged on the output shaft of the wet clutch gearbox; all the sensors transmit the acquired data to the data acquisition card, the data acquisition card is arranged in the data acquisition box, and the acquired sensor signals are conditioned by the data acquisition box and then transmitted to the control mechanism.
3. The system of claim 1, wherein: the control mechanism comprises a frequency converter, a controller and a computer; the computer is used for transmitting control information to the controller and the frequency converter; the controller also receives a sensor signal transmitted by a data acquisition box in the data acquisition device, and controls the frequency of the frequency converter according to the received signal so as to control the rotating speed of the motor; the controller also controls the operation of the actuator and the actuation of the wet clutch gearbox in response to the received signals.
4. The system of claim 1, wherein: the actuating mechanism comprises a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, an electro-hydraulic proportional valve, a pump station oil tank, an oil return pump, a first driving circuit and a second driving circuit; control signals sent by a controller in the control mechanism are respectively transmitted to the first driving circuit, the second driving circuit, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve; the electro-hydraulic proportional valve is driven by the second driving circuit to act, and the control oil circuit of the pump station controls the combination or separation of the wet clutch through the first electromagnetic valve and the electro-hydraulic proportional valve; the first driving circuit drives a gear shifting electromagnetic valve in the wet clutch gearbox to act to shift gears after receiving the control signal; the second electromagnetic valve is used for controlling the on-off of a lubricating oil path, and the third electromagnetic valve is used for controlling the on-off of a braking oil path between the third electromagnetic valve and a braking device in the transmission mechanism; and oil in the lubricating oil path, the operating oil path, the braking oil path and the wet clutch gearbox returns to the pump station through the oil return pump.
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| CN201821732086.7U CN209458392U (en) | 2018-10-25 | 2018-10-25 | A kind of wet clutch gearbox gear-shift process buffers control system |
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| CN201821732086.7U CN209458392U (en) | 2018-10-25 | 2018-10-25 | A kind of wet clutch gearbox gear-shift process buffers control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139905A (en) * | 2018-10-25 | 2019-01-04 | 北京信息科技大学 | A kind of wet clutch gearbox gear-shift process buffers control method and system |
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- 2018-10-25 CN CN201821732086.7U patent/CN209458392U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139905A (en) * | 2018-10-25 | 2019-01-04 | 北京信息科技大学 | A kind of wet clutch gearbox gear-shift process buffers control method and system |
| CN109139905B (en) * | 2018-10-25 | 2024-03-01 | 北京信息科技大学 | Buffer control method and system for gear shifting process of wet clutch gearbox |
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Effective date of registration: 20230505 Address after: 100072 Room 305, 3 / F, building 97, yard 4, Huaishuling, Fengtai District, Beijing Patentee after: BEIJING XIANGYUAN TONGDA TECHNOLOGY CO.,LTD. Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 12 Patentee before: BEIJING INFORMATION SCIENCE AND TECHNOLOGY University |
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