Clutch control method and device and computer equipment

Abstract

The invention relates to a clutch control method and device and computer equipment. The method comprises the following steps: acquiring operation parameter information and environment information of a vehicle; under the condition that the operation parameter information meets a preset condition, the current position and the actual temperature of a clutch of the vehicle are obtained, and the actual transmission torque of the clutch is obtained according to the operation parameter information and the environment information; according to the current position, the actual temperature and the actual transmission torque, a first characteristic association library of the clutch is updated; and controlling the clutch according to the operation parameter information and the updated first characteristic association library. By means of the method, the clutch can move to the correct position in the driving process.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a clutch control method, device and computer equipment. Background Art

[0002] As people's requirements for driving comfort increase, commercial vehicles are gradually using AMT (Automated Mechanical Transmission) instead of manual transmission to reduce the driver's labor intensity.

[0003] AMT sends commands to the clutch actuator to control the actuator to perform the corresponding clutch engagement action to complete vehicle behaviors such as shifting, starting, and accelerating. The current mainstream clutch control method is to first obtain the vehicle target torque through the accelerator pedal, and obtain the current position of the clutch through the target torque table, that is, to control the clutch movement by the position-torque control method.

[0004] However, when the vehicle is driving, it is inevitable that clutch slippage and other reasons will occur, resulting in an inaccurate position-torque table, which in turn causes the clutch to fail to move to the correct position. Summary of the invention

[0005] Based on this, it is necessary to provide a clutch control method, device and computer equipment that can enable the clutch to move to the correct position according to the target torque during driving to address the above technical problems.

[0006] In a first aspect, the present application provides a clutch control method, the method comprising:

[0007] Obtaining vehicle operating parameter information and environmental information;

[0008] When the operating parameter information satisfies a preset condition, obtaining a current position and an actual temperature of a clutch of the vehicle, and obtaining an actual transmission torque of the clutch according to the operating parameter information and the environmental information;

[0009] updating a first characteristic association library of the clutch according to the current position, the actual temperature and the actual transmitted torque;

[0010] The clutch is controlled according to the operating parameter information and the updated first characteristic association library.

[0011] In one of the embodiments, the operating parameter information includes: gear position of the gearbox, acceleration of the vehicle and frontal area of ​​the vehicle, and the environmental information includes environmental ramp angle;

[0012] The obtaining the actual transmission torque of the vehicle according to the operating parameter information and the environmental information includes:

[0013] Determining driving resistance according to the vehicle acceleration, the vehicle frontal area, the environmental ramp angle and a preset vehicle mass;

[0014] Determining the transmission ratio of the transmission system according to the gear position of the transmission and a preset gear ratio relationship library;

[0015] The actual transmission torque of the clutch is determined based on the transmission ratio of the transmission system and the driving resistance.

[0016] In one embodiment, the operating parameter information further includes an accelerator pedal opening; and controlling the clutch according to the operating parameter information and the updated first characteristic association library includes:

[0017] Determining the target transmission torque of the clutch according to the accelerator pedal opening and a preset first torque relationship library;

[0018] The target position of the clutch is determined according to the target transmission torque, the actual temperature of the clutch and the updated first characteristic correlation library.

[0019] In one embodiment, the method further comprises:

[0020] When a vehicle start command is received, the clutch is controlled to move toward the flywheel, and a first wear amount of the clutch is obtained;

[0021] The pre-stored initial characteristic association library is updated according to the first wear amount and the pre-stored historical wear amount to obtain a first characteristic association library.

[0022] In one embodiment, the updating of the pre-stored initial characteristic association library according to the first wear amount and the pre-stored historical wear amount to obtain the first characteristic association library includes:

[0023] When the difference between the first wear amount and the historical wear amount is greater than a preset wear threshold, the initial characteristic association library is updated according to the difference between the first wear amount and the pre-stored historical wear amount to obtain a first characteristic association library;

[0024] When the difference between the first wear amount and the historical wear amount is equal to a preset wear threshold, directly determining the initial characteristic association library as the first characteristic association library;

[0025] When the difference between the first wear amount and the historical wear amount is less than a preset wear threshold, a pre-stored original characteristic association library of the clutch is obtained, and the original characteristic association library is determined as the first characteristic association library.

[0026] In one embodiment, the method further comprises:

[0027] When receiving the first shift instruction, determining the initial transmission torque of the clutch according to the operating parameter information, and acquiring the current temperature of the clutch;

[0028] determining an initial position of the clutch according to the initial transmission torque, the current temperature and the first characteristic association library;

[0029] The clutch is controlled to move toward the initial position.

[0030] In one embodiment, controlling the clutch to move toward the initial position includes:

[0031] In the process of controlling the clutch to move toward the initial position, obtaining the input shaft speed of the vehicle;

[0032] When the input shaft speed exceeds a preset first input shaft threshold, controlling the clutch to move to a preset position;

[0033] When the input shaft speed does not exceed a preset first input shaft threshold, the clutch is controlled to move to the initial position.

[0034] In one embodiment, the method further comprises:

[0035] When a second gear shift instruction is received, the clutch is controlled to be disengaged to a preset position.

[0036] In a second aspect, the present application further provides a clutch control device, the device comprising:

[0037] A first acquisition module is used to acquire operating parameter information and environmental information of the vehicle;

[0038] A second acquisition module is used to acquire the current position and actual temperature of the clutch of the vehicle when the operating parameter information meets the preset relative slip condition, and acquire the actual transmission torque of the clutch according to the operating parameter information and the environmental information;

[0039] a first updating module, configured to update a first characteristic association library of the clutch according to the current position, the actual temperature and the actual transmission torque;

[0040] The first execution module is used to control the clutch according to the updated first characteristic association library.

[0041] In a third aspect, the present application further provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and wherein the processor implements the steps of the clutch control method in any one of the above-mentioned embodiments when executing the computer program.

[0042] The above-mentioned clutch control method, device and computer equipment obtain the vehicle's operating parameter information and environmental information during the vehicle's driving process. When the operating parameter information meets the preset conditions, the actual transmission torque of the clutch is obtained according to the operating parameter information and environmental information. Afterwards, the first characteristic association library of the clutch is updated according to the current position, actual temperature and actual transmission torque of the clutch. Since the current position of the clutch is obtained by searching the first characteristic association library according to the temperature of the clutch and the target torque of the clutch, the actual transmission torque of the clutch is calculated in the present application to update the torque size of the clutch at the current position and current temperature in the first characteristic association library. Afterwards, the position of the clutch is controlled according to the updated first characteristic association library, so that the clutch can move to the correct position according to the torque required by the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0044] FIG1 is a schematic flow chart of a clutch control method in one embodiment;

[0045] FIG2 is a schematic diagram of a flow chart of step S102 in one embodiment;

[0046] FIG3 is a schematic diagram of a flow chart of step S104 in one embodiment;

[0047] FIG4 is a schematic flow chart of a clutch control method in another embodiment;

[0048] FIG5 is a schematic diagram of a flow chart of step S402 in one embodiment;

[0049] FIG6 is a schematic flow chart of a clutch control method in yet another embodiment;

[0050] FIG7 is a schematic diagram of a flow chart of step S603 in one embodiment;

[0051] FIG8 is a block diagram of a clutch control device in one embodiment;

[0052] FIG. 9 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0054] As mentioned in the background technology section, as people's requirements for driving comfort increase, commercial vehicles are gradually using automatic transmissions instead of manual transmissions to reduce the labor intensity of drivers. Most commercial vehicles are equipped with AMT transmissions (automatic mechanical transmissions). AMT transmissions have the advantages of high transmission efficiency, low cost, and good fuel economy. Therefore, the application of AMT transmissions has become increasingly widespread in recent years.

[0055] The AMT controller controls the actuator to perform the corresponding clutch engagement action to complete vehicle behaviors such as shifting, starting, and accelerating by sending commands to the clutch actuator. The current mainstream clutch control method is to first obtain the vehicle target torque through the accelerator pedal, and obtain the current position of the clutch through the target torque table lookup, that is, to control the clutch movement by the position-torque control method. This method is relatively simple, but it is inevitable that the clutch slips and the temperature rises during vehicle driving, resulting in inaccurate position-torque tables. Frequent starting often causes clutch slippage, etc., which affects the driving experience.

[0056] To solve the above technical problem, in an exemplary embodiment, please refer to FIG. 1 , the present application provides a clutch control method, which includes steps S101 to S104 .

[0057] S101: Acquire vehicle operating parameter information and environmental information.

[0058] It can be understood that during the driving process of the vehicle, the driver controls the driving speed of the vehicle by pressing and releasing the accelerator pedal. The vehicle controller of the vehicle can calculate the required transmission torque of the clutch by measuring the opening of the accelerator pedal in real time, and detect the temperature of the clutch in real time, so as to find the first characteristic association library according to the required transmission torque of the clutch and the temperature of the clutch, and determine the position of the clutch. In this process, the vehicle controller can also obtain the operating parameter information and environmental information of the vehicle, such as the engine speed of the vehicle, the input shaft speed, the slope angle of the road on which the vehicle is traveling, etc., and judge whether the current clutch position can enable the clutch to transmit the required transmission torque according to the operating parameter information of the vehicle, and then judge whether it is necessary to update the first characteristic association library of the clutch.

[0059] S102: When the operating parameter information meets a preset condition, the current position and actual temperature of the clutch of the vehicle are obtained, and the actual transmission torque of the clutch is obtained according to the operating parameter information and the environmental information.

[0060] The operating parameter information includes the engine speed and the input shaft speed. The operating parameter information meets the preset condition, which means that during the vehicle shifting process, the absolute value of the difference between the engine speed and the input shaft speed is greater than the preset differential threshold. If the operating parameter information meets the preset condition, that is, the torque output by the engine exceeds the carrying capacity of the clutch at the current position, that is, the current clutch position does not match the clutch's required transmission torque, the vehicle controller can calculate the current actual transmission torque of the clutch based on the operating parameter information and environmental information.

[0061] S103: updating the first characteristic association library of the clutch according to the current position, the actual temperature and the actual transmission torque.

[0062] Specifically, the first characteristic association library of the clutch records the association between the temperature, transmission torque and position of the clutch, that is, the first characteristic association library records how much torque the clutch can transmit at what temperature and at what position. Therefore, after calculating the current actual transmission torque of the clutch, the transmission torque of the clutch at the current position and the current actual temperature recorded in the first characteristic association library can be updated according to the actual transmission torque. In addition, the transmission torques at other positions at the current actual temperature can also be updated according to the difference between the transmission torque of the clutch at the current position and the current actual temperature recorded in the first characteristic association library and the actual transmission torque.

[0063] S104: Control the clutch according to the operating parameter information and the updated first characteristic association library.

[0064] Afterwards, the vehicle controller continues to calculate the clutch's required torque transfer by measuring the accelerator pedal opening in real time, and detects the clutch temperature in real time, thereby searching the updated first characteristic association library based on the clutch's required torque transfer and the clutch temperature, and determining the clutch position, thereby enabling the clutch to move to the correct position according to the clutch's required torque transfer.

[0065] The above-mentioned clutch control method obtains the vehicle's operating parameter information and environmental information during the vehicle's driving process. When the operating parameter information meets the preset conditions, the actual transmission torque of the clutch is obtained according to the operating parameter information and the environmental information. Afterwards, the first characteristic association library of the clutch is updated according to the current position, actual temperature and actual transmission torque of the clutch. Since the current position of the clutch is obtained by searching the first characteristic association library according to the temperature of the clutch and the target torque of the clutch, the actual transmission torque of the clutch is calculated in the present application to update the torque size of the clutch at the current position and current temperature in the first characteristic association library. Afterwards, the position of the clutch is controlled according to the updated first characteristic association library, so that the clutch can move to the correct position according to the torque required by the vehicle.

[0066] In an exemplary embodiment, please refer to FIG. 2 , step S102 , obtaining the actual transmission torque of the vehicle according to the operating parameter information and the environmental information, including steps S201 to S203 .

[0067] S201: Determine driving resistance according to the vehicle acceleration, the vehicle frontal area, the environmental ramp angle and the preset vehicle mass.

[0068] The operating parameter information includes the gear position of the transmission, the acceleration of the vehicle and the frontal area of ​​the vehicle, and the environmental information includes the environmental ramp angle. The frontal area of ​​the vehicle can be a preset value, or the vehicle controller can calculate the frontal area of ​​the vehicle according to the driving state of the vehicle. During the driving process of the vehicle, the vehicle controller can detect the gear position of the transmission, the acceleration of the vehicle and the frontal area of ​​the vehicle in real time, and obtain the environmental ramp angle of the road on which the vehicle is driving, so as to calculate the current driving resistance of the vehicle according to the acceleration of the vehicle, the frontal area of ​​the vehicle, the environmental ramp angle and the preset vehicle mass.

[0069] S202: Determine the transmission ratio of the transmission system according to the gear position of the transmission and a preset gear ratio relationship library.

[0070] The transmission ratio of a vehicle's transmission system is generally related to the gear position of the transmission in the vehicle. Therefore, the relationship between the transmission gear position and the transmission ratio can be pre-calibrated to form a gear ratio relationship library. Afterwards, the transmission ratio can be determined directly based on the transmission gear position and the gear ratio relationship library.

[0071] S203: Determine the actual transmission torque of the clutch according to the transmission ratio of the transmission system and the driving resistance.

[0072] Afterwards, the actual transmission torque of the clutch can be determined according to the transmission ratio of the transmission system and the driving resistance, and the first characteristic association library can be updated according to the actual transmission torque.

[0073] In an exemplary embodiment, referring to FIG. 3 , step S104 , controlling the clutch according to the operating parameter information and the updated first characteristic association library, includes step S301 and step S302 .

[0074] S301: Determine a target transmission torque of the clutch according to an accelerator pedal opening and a preset first torque relationship library.

[0075] The operating parameter information also includes the throttle pedal opening, which is the accelerator pedal opening in the above embodiment. The vehicle controller continues to calculate the target transmission torque of the clutch by measuring the accelerator pedal opening in real time.

[0076] S302: Determine a target position of the clutch according to the target transmission torque, the actual temperature of the clutch and the updated first characteristic association library.

[0077] At the same time, the vehicle controller continues to detect the actual temperature of the clutch in real time, and then searches the updated first characteristic association library according to the clutch's required torque transmission and the clutch's actual temperature to determine the position of the clutch, so that the clutch can move to the correct position according to the clutch's required torque transmission. It can be understood that during the subsequent driving of the vehicle, the vehicle controller will continue to determine whether the current clutch position matches the clutch's required torque transmission, so as to update the first characteristic association library again.

[0078] In an exemplary embodiment, referring to FIG. 4 , the clutch control method of the present application further includes step S401 and step S402 .

[0079] S401: When a vehicle start command is received, the clutch is controlled to move toward the flywheel, and a first wear amount of the clutch is obtained.

[0080] In the present application, each time the vehicle is started, the clutch must first be self-learned, that is, the clutch is controlled to move toward the flywheel and press the flywheel. It is assumed that the point at which a new clutch is fully pressed onto the flywheel is the clutch 0 point. The movement of the clutch toward the flywheel is negative, and vice versa. If a negative value appears in the clutch value after the flywheel is pressed during the self-learning process, it is considered that the clutch is worn, and the wear amount of this clutch self-learning is recorded as the first wear amount.

[0081] S402: updating a pre-stored initial characteristic association library according to the first wear amount and the pre-stored historical wear amount to obtain a first characteristic association library.

[0082] Afterwards, the degree of clutch wear can be judged based on the difference between the first wear amount and the pre-stored wear amount of the last self-learning, that is, the historical wear amount, and the initial characteristic association library is updated based on the difference between the first wear amount and the historical wear amount to obtain the first characteristic association library, wherein the initial characteristic association library is the first characteristic association library obtained by the last update during the last driving process.

[0083] In an exemplary embodiment, please refer to FIG. 5 , step S402 , updating the pre-stored initial characteristic association library according to the first wear amount and the pre-stored historical wear amount to obtain the first characteristic association library, including steps S501 to S503 .

[0084] S501: When the difference between the first wear amount and the historical wear amount is greater than a preset wear threshold, the initial characteristic association library is updated according to the difference between the first wear amount and the pre-stored historical wear amount to obtain a first characteristic association library.

[0085] If the difference Δ2-Δ1 between the first wear amount Δ1 and the historical wear amount Δ2 is greater than the preset wear threshold, it means that the clutch was worn during the last driving process, and the initial characteristic association library needs to be updated with the difference Δ2-Δ1 between the first wear amount and the pre-stored historical wear amount, that is, all items of the clutch position in the initial characteristic association library are added with Δ2-Δ1 to form a first characteristic association library, wherein the preset wear threshold can be 0.

[0086] S502: When the difference between the first wear amount and the historical wear amount is equal to a preset wear threshold, directly determine the initial characteristic association library as the first characteristic association library.

[0087] If the difference between the first wear amount and the historical wear amount is equal to the preset wear threshold, it indicates that the clutch was not worn during the last driving process. Therefore, the initial characteristic association library, that is, the first characteristic association library obtained by the last update of the last driving process, can be directly determined as the first characteristic association library.

[0088] S503: When the difference between the first wear amount and the historical wear amount is less than a preset wear threshold, obtain a pre-stored original characteristic association library of the clutch, and determine the original characteristic association library as the first characteristic association library.

[0089] If the difference between the first wear amount and the historical wear amount is less than the preset wear threshold, it means that the vehicle has replaced a new clutch. Therefore, the original characteristic association library of the new clutch can be obtained according to the model of the new clutch. The original characteristic association library is the characteristic association library set by the clutch at the factory.

[0090] In an exemplary embodiment, referring to FIG. 6 , the clutch control method of the present application further includes steps S601 to S603 .

[0091] S601: When a first gear shift instruction is received, an initial transmission torque of the clutch is determined according to operating parameter information, and a current temperature of the clutch is acquired.

[0092] The first shift command refers to shifting from neutral to forward gear. When the driver steps on the brake pedal and moves the shift handle from neutral to forward gear, the vehicle controller determines the initial transmission torque Ta of the clutch based on the operating parameter information and obtains the current temperature of the clutch.

[0093] Among them, the operating parameter information includes the gear position of the transmission, the axle status and the gearbox oil temperature. The initial transmission torque is calculated by adding the transmission resistance torque and the transmission acceleration resistance. The magnitude of the transmission resistance torque can be obtained through the transmission bench test calibration, or calculated by the transmission moment of inertia and the current transmission oil temperature. The transmission moment of inertia can be calculated and determined according to the gear position of the transmission and the axle status. The transmission acceleration resistance can be determined by calibration, or calculated by the gear position of the transmission and the axle status.

[0094] S602: Determine the initial position of the clutch according to the initial transmission torque, the current temperature and the first characteristic association library.

[0095] Afterwards, the vehicle controller can control the automatic transmission control unit to search the first characteristic association library according to the initial transmission torque and the current temperature to determine the initial position of the clutch.

[0096] S603: Control the clutch to move to the initial position.

[0097] After that, the automatic transmission control unit controls the clutch to move to the initial position.

[0098] In an exemplary embodiment, please refer to FIG. 7 , step S603 , controlling the clutch to move to the initial position, includes steps S701 to S703 .

[0099] S701: While controlling the clutch to move toward the initial position, obtaining the input shaft speed of the vehicle.

[0100] The operating status information also includes the vehicle's input shaft speed, which refers to the speed of the gearbox's input shaft, to which the engine transmits power through the clutch. During the clutch's movement toward the initial position, the gearbox's input shaft speed can be monitored in real time.

[0101] S702: When the input shaft speed exceeds a preset first input shaft threshold, control the clutch to move to a preset position.

[0102] During the movement of the clutch toward the initial position, if the input shaft speed is monitored to exceed the preset first input shaft threshold, it means that the initial position does not match the initial transmission torque, and the clutch needs to be controlled to move to the preset position. The preset position can be obtained through calibration, and the preset position is located on the side of the initial position away from the flywheel.

[0103] S703: When the input shaft speed does not exceed a preset first input shaft threshold, control the clutch to move to an initial position.

[0104] During the movement of the clutch toward the initial position, if the input shaft speed never exceeds the preset first input shaft threshold, it means that the initial position matches the initial transmission torque, and the clutch can be controlled to move to the initial position.

[0105] In an exemplary embodiment, the clutch control method further includes: upon receiving a second gear shift instruction, controlling the clutch to be disengaged to a preset position.

[0106] Among them, the second gear shift command is the gear shift during driving after the vehicle starts. After receiving the second gear shift command, the vehicle controller can directly control the clutch to separate to the preset position. After the gear shift is completed, the clutch transmission torque is determined according to the accelerator pedal opening, and then the clutch position is determined.

[0107] In a detailed embodiment, when the vehicle starts, the clutch is first controlled to perform self-learning. Assuming that the point where the new clutch is fully pressed onto the flywheel is the clutch 0 point, the clutch moves toward the flywheel as negative, and vice versa as positive. The clutch is controlled to move until it is fully pressed onto the flywheel, and the first wear amount Δ1 of the clutch is obtained. Then, combined with the pre-stored clutch wear amount recorded during the last driving, that is, the historical wear amount Δ2, the difference Δ2-Δ1 between the first wear amount and the pre-stored historical wear amount is obtained. If the difference Δ2-Δ1 is greater than the preset wear threshold, the difference Δ2-Δ1 between the first wear amount and the pre-stored historical wear amount is required to update the initial characteristic association library to obtain the first characteristic association library; if the difference Δ2-Δ1 is equal to the preset wear threshold, the initial characteristic association library can be directly determined as the first characteristic association library; if the difference Δ2-Δ1 is less than the preset wear threshold, the original characteristic association library of the new clutch can be obtained, and the original characteristic association library can be determined as the first characteristic association library.

[0108] After determining the first characteristic association library, when the driver steps on the brake pedal and moves the shift handle from neutral to forward gear, the vehicle controller determines the initial transmission torque of the clutch according to the gear position of the transmission, the state of the axle and the temperature of the transmission oil, and then searches the first characteristic association library according to the current temperature and initial transmission torque of the clutch, determines the initial position of the clutch, and controls the clutch to move to the initial position. In the process of the clutch moving to the initial position, the input shaft speed of the transmission is monitored in real time. If the input shaft speed exceeds the preset first input shaft threshold, the clutch is controlled to move to the preset position; if the input shaft speed never exceeds the preset first input shaft threshold, the clutch is controlled to move to the initial position.

[0109] After the gear shift is completed, the target transmission torque of the clutch can be determined according to the accelerator pedal opening, and the first characteristic association library can be searched in combination with the real-time temperature of the clutch to determine the target position of the clutch. During the gear shift process during starting and driving, the engine speed and the input shaft speed are monitored in real time, and the absolute value of the difference between the engine speed and the input shaft speed is calculated. If the absolute value of the difference between the engine speed and the input shaft speed is greater than the preset differential threshold, the driving resistance is determined according to the vehicle acceleration, the vehicle frontal area, the environmental ramp angle and the preset vehicle mass, and the transmission system transmission ratio is determined according to the gear position of the gearbox and the preset gear transmission ratio relationship library, and then the actual transmission torque of the clutch is calculated according to the driving resistance and the transmission system transmission ratio, and the first characteristic association library is updated according to the actual transmission torque of the clutch, the current position of the clutch, and the current temperature. In the subsequent travel process, the clutch position is determined according to the updated first characteristic association library, and in the subsequent gear shift process, it is determined whether to continue to update the first characteristic association library according to the engine speed and the input shaft speed until the current driving process ends, and the first characteristic association library is set as the initial characteristic association library, waiting for the next driving to be enabled.

[0110] In summary, the clutch control method of the present application can update the clutch characteristic association library according to the clutch wear, the clutch's target transmission torque and the actual transmission torque each time the vehicle is started and during driving, thereby ensuring that the clutch can move to the correct position during driving.

[0111] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0112] Based on the same inventive concept, the embodiment of the present application also provides a clutch control device for implementing the clutch control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more clutch control device embodiments provided below can refer to the limitations on the clutch control method above, and will not be repeated here.

[0113] In an exemplary embodiment, as shown in FIG8 , the present application provides a clutch control device, comprising: a first acquisition module 801 , a second acquisition module 802 , a first update module 803 and a first execution module 804 , wherein:

[0114] The first acquisition module 801 is used to acquire the operating parameter information and environmental information of the vehicle.

[0115] The second acquisition module 802 is used to acquire the current position and actual temperature of the clutch of the vehicle when the operating parameter information meets the preset relative slip condition, and acquire the actual transmission torque of the clutch according to the operating parameter information and environmental information.

[0116] The first updating module 803 is used to update the first characteristic association library of the clutch according to the current position, the actual temperature and the actual transmission torque.

[0117] The first execution module 804 is used to control the clutch according to the updated first characteristic association library.

[0118] In an exemplary embodiment, the operating parameter information includes: transmission gear, vehicle acceleration and vehicle frontal area, and the environmental information includes the environmental ramp angle; the second acquisition module includes a first determination submodule, a second determination submodule and a third determination submodule.

[0119] The first determination submodule is used to determine the driving resistance according to the vehicle acceleration, the vehicle frontal area, the environmental ramp angle and the preset vehicle mass.

[0120] The second determination submodule is used to determine the transmission system transmission ratio according to the gear position of the transmission and a preset gear ratio relationship library.

[0121] The third determination submodule is used to determine the actual transmission torque of the clutch according to the transmission ratio of the transmission system and the driving resistance.

[0122] In an exemplary embodiment, the operating parameter information further includes an accelerator pedal opening; and the first execution module includes a fourth determination submodule and a fifth determination submodule.

[0123] The fourth determination submodule is used to determine the target transmission torque of the clutch according to the accelerator pedal opening and a preset first torque relationship library;

[0124] The fifth determination submodule is used to determine the target position of the clutch according to the target transmission torque, the actual temperature of the clutch and the updated first characteristic association library.

[0125] In an exemplary embodiment, the clutch control device further includes a third acquisition module and a fourth acquisition module.

[0126] The third acquisition module is used to control the clutch to move toward the flywheel and acquire a first wear amount of the clutch when a vehicle start command is received.

[0127] The fourth acquisition module is used to update the pre-stored initial characteristic association library according to the first wear amount and the pre-stored historical wear amount to obtain the first characteristic association library.

[0128] In an exemplary embodiment, the fourth acquisition module includes:

[0129] The first acquisition submodule is used to update the initial characteristic association library according to the difference between the first wear amount and the pre-stored historical wear amount to acquire the first characteristic association library when the difference between the first wear amount and the historical wear amount is greater than a preset wear threshold.

[0130] The second acquisition submodule is used for directly determining the initial characteristic association library as the first characteristic association library when the difference between the first wear amount and the historical wear amount is equal to a preset wear threshold.

[0131] The third acquisition submodule is used to acquire a pre-stored original characteristic association library of the clutch when the difference between the first wear amount and the historical wear amount is less than a preset wear threshold, and determine the original characteristic association library as the first characteristic association library.

[0132] In an exemplary embodiment, the clutch control device further includes a first determination module, a second determination module and a second execution module.

[0133] The first determination module is used to determine the initial transmission torque of the clutch according to the operating parameter information and obtain the current temperature of the clutch when receiving the first gear shift instruction.

[0134] The second determination module is used to determine the initial position of the clutch according to the initial transmission torque, the current temperature and the first characteristic association library.

[0135] The second execution module is used for controlling the clutch to move to the initial position.

[0136] In an exemplary embodiment, the second execution module includes a fourth acquisition submodule, a first execution submodule and a second execution submodule.

[0137] The fourth acquisition submodule is used to acquire the input shaft speed of the vehicle during the process of controlling the clutch to move toward the initial position.

[0138] The first execution submodule is used to control the clutch to move to a preset position when the input shaft speed exceeds a preset first input shaft threshold.

[0139] The second execution submodule is used for controlling the clutch to move to the initial position when the input shaft speed does not exceed a preset first input shaft threshold.

[0140] In an exemplary embodiment, the clutch control device further includes a second execution submodule.

[0141] The third execution module is used for controlling the clutch to be separated to a preset position when receiving the second gear shift instruction.

[0142] Each module in the clutch control device can be implemented in whole or in part by software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0143] In an exemplary embodiment, the present application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and wherein the processor implements the steps of the clutch control method in any of the above embodiments when executing the computer program.

[0144] The computer device may be a terminal, and its internal structure diagram may be shown in FIG9. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, the memory, and the input / output interface are connected via a system bus, and the communication interface, the display unit, and the input device are connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, a clutch control method is implemented. The display unit of the computer device is used to form a visually visible picture, which may be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0145] Those skilled in the art will understand that the structure shown in FIG. 9 is merely a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0146] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the clutch control method in any of the above embodiments are implemented.

[0147] In one embodiment, a computer program product is provided, comprising a computer program, wherein when the computer program is executed by a processor, the steps of the clutch control method in any one of the above embodiments are implemented.

[0148] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0149] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0150] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0151] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the present application. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A clutch control method, characterized in that: The method comprises: Obtaining vehicle operating parameter information and environmental information; When the operating parameter information satisfies a preset condition, obtaining a current position and an actual temperature of a clutch of the vehicle, and obtaining an actual transmission torque of the clutch according to the operating parameter information and the environmental information; updating a first characteristic association library of the clutch according to the current position, the actual temperature and the actual transmitted torque; The clutch is controlled according to the operating parameter information and the updated first characteristic association library.

2. The method according to claim 1, characterized in that The operating parameter information includes: gearbox gear, vehicle acceleration and vehicle frontal area, and the environmental information includes environmental ramp angle; The obtaining the actual transmission torque of the vehicle according to the operating parameter information and the environmental information includes: Determining driving resistance according to the vehicle acceleration, the vehicle frontal area, the environmental ramp angle and a preset vehicle mass; Determining the transmission ratio of the transmission system according to the gear position of the transmission and a preset gear ratio relationship library; The actual transmission torque of the clutch is determined based on the transmission ratio of the transmission system and the driving resistance.

3. The method according to claim 1, characterized in that The operating parameter information also includes an accelerator pedal opening; and controlling the clutch according to the operating parameter information and the updated first characteristic association library includes: Determining the target transmission torque of the clutch according to the accelerator pedal opening and a preset first torque relationship library; The target position of the clutch is determined according to the target transmission torque, the actual temperature of the clutch and the updated first characteristic correlation library.

4. The method according to claim 1, characterized in that: The method further comprises: When a vehicle start command is received, the clutch is controlled to move toward the flywheel, and a first wear amount of the clutch is obtained; The pre-stored initial characteristic association library is updated according to the first wear amount and the pre-stored historical wear amount to obtain a first characteristic association library.

5. The method according to claim 4, characterized in that The updating of the pre-stored initial characteristic association library according to the first wear amount and the pre-stored historical wear amount to obtain the first characteristic association library includes: When the difference between the first wear amount and the historical wear amount is greater than a preset wear threshold, the initial characteristic association library is updated according to the difference between the first wear amount and the pre-stored historical wear amount to obtain a first characteristic association library; When the difference between the first wear amount and the historical wear amount is equal to a preset wear threshold, directly determining the initial characteristic association library as the first characteristic association library; When the difference between the first wear amount and the historical wear amount is less than a preset wear threshold, a pre-stored original characteristic association library of the clutch is obtained, and the original characteristic association library is determined as the first characteristic association library.

6. The method according to claim 1, characterized in that The method further comprises: When receiving the first shift instruction, determining the initial transmission torque of the clutch according to the operating parameter information, and acquiring the current temperature of the clutch; determining an initial position of the clutch according to the initial transmission torque, the current temperature and the first characteristic association library; The clutch is controlled to move toward the initial position.

7. The method according to claim 6, characterized in that The controlling the clutch to move toward the initial position comprises: In the process of controlling the clutch to move toward the initial position, obtaining the input shaft speed of the vehicle; When the input shaft speed exceeds a preset first input shaft threshold, controlling the clutch to move to a preset position; When the input shaft speed does not exceed a preset first input shaft threshold, the clutch is controlled to move to the initial position.

8. The method according to claim 1, characterized in that The method further comprises: When a second gear shift instruction is received, the clutch is controlled to be disengaged to a preset position.

9. A clutch control device, characterized in that: The device comprises: A first acquisition module is used to acquire operating parameter information and environmental information of the vehicle; A second acquisition module is used to acquire the current position and actual temperature of the clutch of the vehicle when the operating parameter information meets the preset relative slip condition, and acquire the actual transmission torque of the clutch according to the operating parameter information and the environmental information; a first updating module, configured to update a first characteristic association library of the clutch according to the current position, the actual temperature and the actual transmission torque; The first execution module is used to control the clutch according to the updated first characteristic association library.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 8 are implemented.

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