CN115143209A - Vehicle clutch self-learning method, device, equipment, medium and vehicle - Google Patents
Vehicle clutch self-learning method, device, equipment, medium and vehicle Download PDFInfo
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- CN115143209A CN115143209A CN202210581705.1A CN202210581705A CN115143209A CN 115143209 A CN115143209 A CN 115143209A CN 202210581705 A CN202210581705 A CN 202210581705A CN 115143209 A CN115143209 A CN 115143209A
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- 238000000034 method Methods 0.000 title claims abstract description 84
- 238000000926 separation method Methods 0.000 claims description 15
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 6
- 238000004590 computer program Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 101100328518 Caenorhabditis elegans cnt-1 gene Proteins 0.000 description 1
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- 230000002411 adverse Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/104—Clutch
- F16D2500/10443—Clutch type
- F16D2500/1045—Friction clutch
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/11—Application
- F16D2500/1107—Vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/304—Signal inputs from the clutch
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/31—Signal inputs from the vehicle
- F16D2500/3104—Travelled distance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/50—Problem to be solved by the control system
- F16D2500/501—Relating the actuator
- F16D2500/5016—Shifting operation, i.e. volume compensation of the master cylinder due to wear, temperature changes or leaks in the cylinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/50—Problem to be solved by the control system
- F16D2500/502—Relating the clutch
- F16D2500/50233—Clutch wear adjustment operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/50—Problem to be solved by the control system
- F16D2500/502—Relating the clutch
- F16D2500/50245—Calibration or recalibration of the clutch touch-point
- F16D2500/50251—During operation
Abstract
The invention relates to a vehicle clutch self-learning method, a device, equipment, a medium and a hybrid vehicle, wherein the method comprises the following steps: determining whether the driving cycle number or the driving mileage meets the trigger condition of clutch self-learning in the driving process of the vehicle; if the trigger condition is met, a clutch self-learning instruction is generated, and the clutch enters a self-learning mode; and when the clutch is in a self-learning mode, performing a self-learning process of the clutch according to the self-learning instruction, and determining target parameters of the clutch. The method can ensure the reasonability of self-learning frequency, avoids frequent triggering of self-learning in a single driving cycle, and takes the intention of a driver as the primary execution sequence in the self-learning process.
Description
Technical Field
The invention relates to the technical field of hybrid vehicle clutches, in particular to a vehicle clutch self-learning method, device, equipment, medium and a hybrid vehicle.
Background
The clutch is one of important parts of a vehicle power assembly system and mainly used for controlling on-off of transmitted power. After the clutch is used for a long time, the positions of a separation point, a joint point and a sliding friction point are changed due to the thinning of the friction plate, so that adverse effects are generated on the processes of acceleration performance, gear shifting smoothness, starting and the like; therefore, a clutch self-learning function is added, three main positions of the clutch are corrected, and the smoothness in the control process is guaranteed.
The self-learning triggering conditions of the existing commercial vehicle clutch are mostly triggered by an external mechanical switch, the self-learning period is uncontrollable and is artificially controlled, so that the self-learning frequency is frequent or overlong, the confirmation of the position of the clutch is influenced, and the control of processes such as gear engaging, starting and the like is not facilitated.
Disclosure of Invention
The application provides a vehicle clutch self-learning method and device, computer equipment and a storage medium.
A first aspect provides a vehicle clutch self-learning method, the method comprising:
determining whether the driving cycle number or the driving mileage of the vehicle in the driving process meets the trigger condition of clutch self-learning;
if the trigger condition is met, a clutch self-learning instruction is generated, an engine starting instruction is sent to the engine, and the clutch enters a self-learning mode;
and when the clutch is in a self-learning mode, performing a self-learning process of the clutch according to the self-learning instruction, and determining target parameters of the clutch.
In some embodiments, the determining whether the number of driving cycles or the mileage of the vehicle during driving satisfies the trigger condition for clutch self-learning includes:
when the vehicle is in a running mode, determining whether the driving cycle number reaches a preset number threshold or whether the running mileage reaches a preset mileage threshold under the conditions that the vehicle state is neutral and static, the engine has no fault and the clutch has no fault.
In some embodiments, the performing a self-learning process of the clutch according to the self-learning instruction to determine the target parameter of the clutch includes:
sending a fast separation instruction to the clutch, keeping a first preset time, and recording the position as a maximum separation position;
sending a slow-closing instruction to the clutch, monitoring a motor rotating speed signal, and recording the position as a position of a sliding friction point when the rotating speed of the motor meets a first preset rotating speed condition;
the clutch is continuously engaged, and when the rotating speed of the motor meets a second rotating speed condition and keeps for a second preset time, the position is recorded as an engaged position;
and automatically learning the maximum separation position, the position of the sliding point and the engagement position of the clutch twice respectively, and determining the final target parameters of the clutch according to the results of the two times.
In some embodiments, the automatically learning twice for the maximum disengagement position, the slip point position, and the engagement position of the clutch, respectively, and determining the final target parameter of the clutch according to the two learning times includes:
executing the clutch self-learning process twice to obtain the candidate position of each target parameter after the clutch self-learning process twice;
calculating the absolute value of the deviation of the candidate position of each parameter after two times of self-learning;
if the absolute value of the deviation is determined to be smaller than the corresponding preset position threshold value, calculating each clutch after two times of self-learning
An average value of the candidate positions of the parameters, and determining the average value as a corresponding target position;
and if the absolute value of the deviation is determined to be larger than or equal to the corresponding preset position threshold, continuing to execute the next clutch self-learning process until the absolute value of the deviation of the candidate position of each parameter after the last two times of self-learning is smaller than the corresponding preset position threshold, calculating the average value of the candidate positions of each parameter after multiple times of self-learning of the clutch, and determining the average value as the corresponding target position.
In some embodiments, after determining the final target clutch parameter according to the two results, the method further comprises:
the clutch position is restored to the position before self-learning;
and storing the positions of the sliding point, the separation point and the joint point, and resetting the driving cycle number and the driving mileage.
In some embodiments, further comprising:
if user intervention is monitored in the automatic learning process, directly exiting the automatic learning mode;
and the position of the clutch is restored to the position before self-learning, and the driving cycle number and the driving mileage before the self-learning of the clutch are kept unchanged.
A second aspect provides a vehicle clutch self-learning device, comprising:
the monitoring unit is used for determining whether the driving cycle number or the driving mileage meets the trigger condition of clutch self-learning in the vehicle driving process;
the generating unit is used for generating a clutch self-learning instruction if the triggering condition is met, and the clutch enters a self-learning mode;
and the execution unit is used for performing a self-learning process of the clutch according to the self-learning instruction when the clutch is in the self-learning mode, and determining target parameters of the clutch.
A third aspect provides a computer apparatus comprising a memory and a processor, the memory having stored therein computer readable instructions which, when executed by the processor, cause the processor to perform the steps of the vehicle clutch self-learning method described above.
A fourth aspect provides a storage medium having computer-readable instructions stored thereon which, when executed by one or more processors, cause the one or more processors to perform the steps of the vehicle clutch self-learning method described above.
A fifth aspect provides a hybrid vehicle comprising the vehicle clutch self-learning apparatus described above.
According to the vehicle clutch self-learning method, the device, the equipment, the medium and the hybrid vehicle, whether the driving cycle number or the driving mileage of the vehicle in the driving process meets the trigger condition of clutch self-learning is determined; secondly, if the trigger condition is met, a clutch self-learning instruction is generated, an engine starting instruction is sent to the engine, and the clutch enters a self-learning mode; and finally, when the clutch is in a self-learning mode, carrying out a self-learning process of the clutch according to the self-learning instruction, and determining target parameters of the clutch. According to the method and the device, the driving cycle number and the driving mileage are judged inside the controller to trigger the self-learning instruction, the reasonability of the self-learning frequency is guaranteed, the self-learning is prevented from being frequently triggered in a single driving cycle, and the driver intention is taken as the primary execution sequence in the self-learning process.
Drawings
FIG. 1 is a flow chart of a vehicle clutch self-learning method in one embodiment;
FIG. 2 is a flow chart of a vehicle clutch self-learning method in another embodiment;
FIG. 3 is a flow chart of a vehicle clutch self-learning method in another embodiment;
FIG. 4 is a graph illustrating the effect of the vehicle clutch self-learning method in one embodiment;
FIG. 5 is a block diagram of a vehicle clutch self-learning apparatus in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For convenience of understanding, technical terms related to the embodiments of the present invention are first explained:
number of driving cycles (num Cycle): reading the EE quantity of the driving cycle times stored when the key is powered on last time, taking each time the key is powered on as the beginning of one driving cycle and accumulating the times, and storing EEPROM (electrically erasable programmable read-Only memory) for the driving cycle times when the key is powered off;
mileage (LSum): when the key is powered on, the EE quantity of the driving mileage stored when the key is powered off last time is read, the EE quantity is accumulated by the speed multiplied by the running step length, and when the key is powered off, the EEPROM is stored for the driving mileage (LSum).
A hybrid vehicle of an embodiment of the present invention may include at least one engine and at least one electric motor. The engine, the motor, the transmission, and the clutch are components that are generally mounted in a hybrid vehicle, which generally has a controller that controls the entire vehicle, and thus detailed descriptions thereof will be omitted in this specification.
States of the engine, the motor, the transmission, and the clutch are monitored while the hybrid vehicle is running to learn operation of the clutch. The controller may be configured to determine whether a clutch position automatic learning condition is satisfied when the vehicle performs a power mode switching, and perform the clutch position automatic learning by controlling the disengagement or engagement of the clutch when the clutch position automatic learning condition is satisfied.
As shown in fig. 1 to 2, in one embodiment, a vehicle clutch self-learning method is provided, which may specifically include the following steps:
1) The controller judges whether the clutch position automatic learning condition is satisfied according to the current state of the hybrid vehicle, and if the clutch position automatic learning condition is satisfied, the clutch enters an automatic learning state.
2) And after the clutch enters the automatic learning state, judging the learning position of the clutch and learning the position. In the running process of the hybrid electric vehicle, the key position of the clutch needs to be learned again and stored in the EEPROM so as to achieve the purpose of correcting the key position of the clutch. The learning position points of the clutch are three, namely a maximum separation point, a minimum combination point and a sliding friction point of the clutch.
Wherein, the maximum separation point refers to the maximum position which can be reached when the clutch is separated; the minimum joint point refers to the minimum position which can be reached when the clutch is combined; the slipping point refers to a position in a slipping state during the engagement of the clutch.
The vehicle has two working condition modes of a pure electric mode and a hybrid power mode when running, and usually, if the vehicle is in the pure electric mode, the clutch is in a separation state at the moment, and the motor provides the power of the whole vehicle. If the vehicle is in a hybrid power mode, the clutch is in a combined state, and the engine or the engine and the motor provide the power of the whole vehicle. The controller may determine the location to learn based on the operating mode of the vehicle.
After entering the automatic learning state, the clutch is controlled to be separated or combined, and positions of the clutch when the clutch is completely separated, completely combined and begins to slide and rub are recorded as a maximum separation point, a minimum combination point and a sliding and rubbing point respectively.
102, if the trigger condition is met, generating a clutch self-learning instruction, and sending an engine starting instruction to an engine, wherein the clutch enters a self-learning mode;
as shown in fig. 2, in some embodiments, determining whether the number of driving cycles or the mileage of the vehicle under driving satisfies the trigger condition for clutch self-learning includes:
when the vehicle is in a running mode, determining whether the driving cycle number reaches a preset number threshold or whether the running mileage reaches a preset mileage threshold under the conditions that the vehicle state is neutral and static, the engine has no fault and the clutch has no fault.
When the vehicle is in a running mode, and the vehicle state is neutral gear static, the engine is not in fault, the clutch is not in fault, the energy mode is a hybrid or pure engine mode, and the clutch self-learning instruction is sent out, the vehicle enters the clutch self-learning mode from the running mode, and the clutch self-learning is started.
The vehicle is powered ON to a START gear, a high-voltage system is powered ON or an engine is started, and the vehicle enters a DRIVE mode;
when the vehicle state is neutral gear static, the engine is not faulted, the clutch is not faulted, the energy mode is a hybrid mode or a pure engine mode and the clutch self-learning instruction is sent out, the vehicle enters a CLTHLRN (clutch self-learning) mode from a DRIVE mode and starts clutch self-learning.
And 103, carrying out a self-learning process of the clutch according to the self-learning instruction when the clutch is in the self-learning mode, and determining target parameters of the clutch.
As shown in fig. 2, in some embodiments, a self-learning process of the clutch is performed according to the self-learning instruction, and the determining of the target parameter of the clutch includes:
step 1031, sending a fast separating instruction to the clutch, keeping the first preset time, and recording the position as a maximum separating position;
in the step, the current position of the clutch is recorded; sending a fast-separating command to the clutch, keeping for a period of time t1, and recording the position as a maximum separating position;
step 1032, sending a slow-closing instruction to the clutch, monitoring a motor rotating speed signal, and recording the position as a position of a sliding point when the rotating speed of the motor meets a first preset rotating speed condition;
in the step, a slow-closing instruction is sent to the clutch, a motor rotating speed (nMT) signal is monitored, and when n1 (20 rpm, which can be calibrated) is not less than nMT and not more than n2 (50 rpm, which can be calibrated), the position is recorded as a position of a sliding grinding point;
step 1033, the clutch continues to be engaged, and when the rotating speed of the motor meets a second rotating speed condition and keeps a second preset time, the position is recorded as an engaged position;
in the step, the clutch is continuously engaged until nMT is more than or equal to n2 and is kept for a period of time t2, and the position is recorded as an engaged position;
and 1034, automatically learning the maximum separation position, the sliding point position and the joint position of the clutch twice respectively, and determining the final target parameters of the clutch according to the results of the two times.
The step may specifically include:
step 1024a, executing two clutch self-learning processes to obtain candidate positions of each target parameter after the two clutch self-learning processes;
step 1024b, calculating the absolute value of deviation of the candidate position of each parameter after two times of self-learning;
step 1024c, if the absolute value of the deviation is smaller than the corresponding preset position threshold value, calculating the average value of the candidate positions of each parameter after the two times of self-learning of the clutch, and determining the average value as the corresponding target position;
step 1024d, if the absolute value of the deviation is determined to be larger than or equal to the corresponding preset position threshold value, continuing to execute the next clutch self-operation
Step 1024e, learning until the absolute value of the deviation of the candidate position of each parameter after the last two self-learning is smaller than the corresponding preset position threshold, calculating the average value of the candidate positions of each parameter after the multiple self-learning of the clutch, and determining the average value as the corresponding target position.
Position checking: if the difference value of the two position values at the same position is within an acceptable range, the self-learning verification is determined to be successful, and the numCycle and the LSum are reset; otherwise, if the check fails, the numCycle and the LSum keep the last time value;
and restoring the clutch position to the position before self-learning, and completing the single self-learning.
In some embodiments, after determining the final target clutch parameter according to the two results, the method further comprises:
the clutch position is restored to the position before self-learning;
and storing the positions of the sliding point, the separation point and the joint point, and resetting the driving cycle number and the driving mileage.
In some embodiments, the method further comprises:
if user intervention is monitored in the automatic learning process, directly exiting the automatic learning mode;
and the position of the clutch is restored to the position before self-learning, and the driving cycle number and the driving mileage before the self-learning of the clutch are kept unchanged.
If the driver intervenes in the self-learning process, such as engaging in a gear, stepping on an accelerator, releasing a brake and the like, the clutch is restored to the original position no matter whether the self-learning process is finished or not, and the vehicle quits the self-learning process, so that the vehicle responds to the intention of the related driver.
In some embodiments, the method further comprises exiting the ambulatory learning mode if the number of consecutive failures to learn after entering the automatic learning mode reaches a set number.
As shown in fig. 3, if the vehicle is in a static DRIVE state in neutral for a long time and the self-learning fails to verify for many times, the numCycle and the LSum are not cleared, which may cause frequent jumping between DRIVE and CLTHLRN modes, and to prevent this, the following measures are added:
1. forbidding self-learning again within 5s after one self-learning is finished;
2. the state of DRIVE and CLTHLRN under a fault-free condition is counted (Timer) and counted (Counter), and the DRIVE mode is prohibited from entering the CLTHLRN mode when the Timer is more than ti1 or the Counter is more than Cnt 1.
The method takes the driving cycle times and the driving mileage as the self-learning trigger conditions of the clutch; after self-learning is finished, whether the counting is reasonable or not is determined through position verification, and if the counting is reasonable, double clearing is carried out, and the counting in the next round is carried out; the self-learning process takes the intention of a driver as a primary execution sequence; the working condition that the vehicle stops without faults and enters a self-learning state for multiple times due to the fact that verification is not passed is avoided. The control effect map is shown in fig. 4.
As shown in fig. 5, in one embodiment, a vehicle clutch self-learning apparatus is provided, which may specifically include:
a monitoring unit 511, configured to determine whether the driving cycle number or the driving mileage of the vehicle during driving meets a trigger condition for clutch self-learning;
the generating unit 512 is used for generating a clutch self-learning instruction if the trigger condition is met, and sending an engine starting instruction to the engine, wherein the clutch enters a self-learning mode;
and the execution unit 513 is configured to perform a self-learning process of the clutch according to the self-learning instruction when the clutch is in the self-learning mode, and determine a target parameter of the clutch.
In one embodiment, a computer device is provided, which may include a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
determining whether the driving cycle number or the driving mileage of the vehicle in the driving process meets the trigger condition of clutch self-learning;
if the trigger condition is met, a clutch self-learning instruction is generated, an engine starting instruction is sent to the engine, and the clutch enters a self-learning mode;
and when the clutch is in a self-learning mode, carrying out a self-learning process of the clutch according to the self-learning instruction, and determining target parameters of the clutch.
In one embodiment, a storage medium is provided that stores computer-readable instructions that, when executed by one or more processors, cause the one or more processors to perform the steps of:
determining whether the driving cycle number or the driving mileage of the vehicle in the driving process meets the triggering condition of the self-learning of the clutch;
if the trigger condition is met, a clutch self-learning instruction is generated, an engine starting instruction is sent to the engine, and the clutch enters a self-learning mode;
and when the clutch is in a self-learning mode, performing a self-learning process of the clutch according to the self-learning instruction, and determining target parameters of the clutch.
In one embodiment, a hybrid vehicle is provided, comprising the vehicle clutch self-learning apparatus of the above embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the computer program is executed. The storage medium may be a non-volatile storage medium such as a magnetic disk, an optical disk, a Read-Only Memory (ROM), or a Random Access Memory (RAM).
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of self-learning a vehicle clutch, the method comprising:
determining whether the driving cycle number or the driving mileage of the vehicle in the driving process meets the triggering condition of the self-learning of the clutch;
if the trigger condition is met, a clutch self-learning instruction is generated, an engine starting instruction is sent to the engine, and the clutch enters a self-learning mode;
and when the clutch is in a self-learning mode, performing a self-learning process of the clutch according to the self-learning instruction, and determining target parameters of the clutch.
2. The vehicle clutch self-learning method according to claim 1, wherein the determining whether the driving cycle number or the driving mileage of the vehicle in the driving process satisfies the trigger condition of the clutch self-learning includes:
when the vehicle is in a driving mode, under the condition that the vehicle state is determined to be neutral and static, the engine has no fault and the clutch has no fault, whether the driving cycle number reaches a preset number threshold or whether the driving mileage reaches a preset mileage threshold is determined.
3. The vehicle clutch self-learning method as claimed in claim 1, wherein the self-learning process of the clutch is performed according to the self-learning instruction, and the determining of the target parameters of the clutch comprises:
sending a fast separation instruction to the clutch, keeping a first preset time, and recording the position as a maximum separation position;
sending a slow-closing instruction to the clutch, monitoring a motor rotating speed signal, and recording the position as a position of a sliding friction point when the rotating speed of the motor meets a first preset rotating speed condition;
the clutch is continuously engaged, and when the rotating speed of the motor meets a second rotating speed condition and keeps for a second preset time, the position is recorded as an engaged position;
and automatically learning the maximum separation position, the position of the sliding point and the engagement position of the clutch twice respectively, and determining the final target parameters of the clutch according to the results of the learning twice.
4. The vehicle clutch self-learning method according to claim 3, wherein the automatically learning twice for the maximum disengagement position, the slip point position and the engagement position of the clutch respectively, and determining the final target parameter of the clutch according to the results of the twice learning comprises:
executing the clutch self-learning process twice to obtain the candidate position of each target parameter after the clutch self-learning process twice;
calculating the absolute value of the deviation of the candidate position of each parameter after two times of self-learning;
if the absolute value of the deviation is determined to be smaller than the corresponding preset position threshold value, calculating each clutch after two times of self-learning
An average value of the candidate positions of the parameters, and determining the average value as a corresponding target position;
and if the absolute value of the deviation is determined to be larger than or equal to the corresponding preset position threshold, continuing to execute the next clutch self-learning process until the absolute value of the deviation of the candidate position of each parameter after the last two times of self-learning is smaller than the corresponding preset position threshold, calculating the average value of the candidate positions of each parameter after multiple times of self-learning of the clutch, and determining the average value as the corresponding target position.
5. The vehicle clutch self-learning method as claimed in claim 3, further comprising, after the determining the clutch final target parameter based on the two results:
the clutch position is restored to the position before self-learning;
and storing the positions of the sliding point, the separation point and the joint point, and resetting the driving cycle number and the driving mileage.
6. The vehicle clutch self-learning method of claim 1, further comprising:
if user intervention is monitored in the automatic learning process, directly exiting the automatic learning mode;
and the position of the clutch is restored to the position before self-learning, and the driving cycle number and the driving mileage before the self-learning of the clutch are kept unchanged.
7. A vehicle clutch self-learning device, comprising:
the monitoring unit is used for determining whether the driving cycle number or the driving mileage of the vehicle in the driving process meets the trigger condition of the clutch self-learning;
the generating unit is used for generating a clutch self-learning instruction if the triggering condition is met, and sending an engine starting instruction to the engine, wherein the clutch enters a self-learning mode;
and the execution unit is used for performing a self-learning process of the clutch according to the self-learning instruction when the clutch is in the self-learning mode, and determining target parameters of the clutch.
8. A computer device comprising a memory and a processor, the memory having stored therein computer readable instructions which, when executed by the processor, cause the processor to carry out the steps of the vehicle clutch self-learning method according to any one of claims 1 to 6.
9. A storage medium of computer readable instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of the vehicle clutch self-learning method as claimed in any one of claims 1 to 6.
10. Hybrid vehicle characterized in that it comprises a vehicle clutch self-learning device according to claim 7.
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| CN115654128A (en) * | 2022-12-09 | 2023-01-31 | 潍柴动力股份有限公司 | Clutch self-learning method and device, hybrid vehicle and storage medium |
| CN116972084A (en) * | 2023-09-20 | 2023-10-31 | 潍柴动力股份有限公司 | Clutch self-learning detection method and device, electronic equipment and storage medium |
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| CN116972084A (en) * | 2023-09-20 | 2023-10-31 | 潍柴动力股份有限公司 | Clutch self-learning detection method and device, electronic equipment and storage medium |
| CN116972084B (en) * | 2023-09-20 | 2024-01-16 | 潍柴动力股份有限公司 | Clutch self-learning detection method and device, electronic equipment and storage medium |
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