Processing method, system and device of clutch thermal model and electronic equipment
By acquiring clutch test parameters and comparing and adjusting the static and dynamic simulation temperatures using the initial thermal model, the clutch thermal model parameters are optimized, solving the problem of large model output errors in existing technologies and improving the reliability and accuracy of the clutch thermal model.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FAW JIEFANG AUTOMOTIVE CO
- Filing Date
- 2022-11-11
- Publication Date
- 2026-05-29
AI Technical Summary
The operating parameters of current clutch thermal models are mostly defined based on experience, which leads to large errors in model output, affecting clutch life and vehicle reliability.
By acquiring clutch test parameters, including torque parameters, clutch bench test temperature, and actual vehicle test temperature, the initial thermal model is used to compare and adjust the static and dynamic simulation temperatures, gradually optimizing the parameters of the clutch thermal model to form the target thermal model.
This improved the reliability and accuracy of the clutch thermal model, providing accurate guidance for subsequent product design and reducing the risk of burn-off caused by excessive clutch temperature.
Smart Images
Figure CN115901244B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive technology, and in particular to a method, apparatus, system, electronic device, storage medium, and computer program product for processing a clutch thermal model. Background Technology
[0002] With the development of automotive technology, clutch performance is directly related to the smoothness of driving during vehicle start-up and gear shifting. Clutch performance also varies greatly under different temperatures. Incorrect clutch thermal management may cause the clutch to overheat and burn, which not only shortens the clutch life but also directly affects the reliability of the entire vehicle.
[0003] In current technology, the output of the clutch thermal model is often used as a design guide for the clutch. However, the operating parameters of the current clutch thermal model are mostly defined based on experience, and the operating parameters are basically not calibrated, resulting in a large error in the output of the clutch thermal model. Summary of the Invention
[0004] Therefore, it is necessary to provide a method, apparatus, electronic device, computer-readable storage medium, and computer program product for calibrating a clutch thermal model, which addresses the aforementioned technical problems.
[0005] Firstly, this application provides a method for processing a clutch thermal model. The method includes:
[0006] Obtain clutch test parameters, including: torque parameters, clutch bench test temperature, and clutch actual vehicle test temperature;
[0007] The torque parameters are input into the initial thermal model of the clutch, and the first static simulation temperature is output.
[0008] The first static simulation temperature is compared with the clutch bench test temperature, and the parameters of the initial thermal model are adjusted in the first stage according to the comparison results to obtain the intermediate thermal model of the clutch.
[0009] The torque parameters are input into the intermediate thermal model, and the first dynamic simulation temperature is output.
[0010] The first dynamic simulation temperature is compared with the actual vehicle test temperature of the clutch, and the parameters of the intermediate thermal model are adjusted in the second stage according to the comparison results to obtain the target thermal model of the clutch.
[0011] In one embodiment, the initial thermal model includes a clutch heat generation sub-model, a clutch static heat dissipation sub-model, and a clutch dynamic heat dissipation sub-model.
[0012] The step of inputting the torque parameters into the initial thermal model of the clutch and outputting the first static simulation temperature includes:
[0013] The torque parameters are input into the clutch heat generation sub-model to obtain the clutch heat generation power. The clutch heat generation power is used as the input to the clutch static heat dissipation sub-model and the clutch dynamic heat dissipation sub-model, and the first static simulation temperature is output.
[0014] In one embodiment, comparing the first static simulation temperature with the clutch bench test temperature, and adjusting the parameters of the initial thermal model in the first stage based on the comparison result to obtain the intermediate thermal model of the clutch, includes:
[0015] The temperature in the first static simulation temperature that belongs to the heat dissipation stage is compared with the temperature in the clutch bench test temperature that belongs to the heat dissipation stage to obtain the first comparison result.
[0016] If the first comparison result does not meet the first preset temperature threshold condition, the static heat dissipation parameters of the initial thermal model are adjusted to obtain the first thermal model.
[0017] The torque parameters are input into the first thermal model of the clutch, and the second static simulation temperature is output.
[0018] The temperature in the second static simulation temperature that belongs to the heat generation stage is compared with the temperature in the clutch bench test temperature that belongs to the heat generation stage to obtain a second comparison result.
[0019] If the second comparison result does not meet the second preset temperature threshold condition, the static heat generation parameters of the first thermal model are adjusted to obtain an intermediate thermal model.
[0020] In one embodiment, the second comparison result includes the difference between the temperature in the heat generation stage of the second static simulation temperature and the temperature in the heat generation stage of the clutch bench test temperature; the static heat generation parameters of the thermal model include heat power distribution parameters and heat generation coefficient;
[0021] If the second comparison result does not meet the second preset temperature threshold condition, the static heat generation parameters of the first thermal model are adjusted to obtain an intermediate thermal model, including:
[0022] If the difference is less than a first preset threshold, the heat power allocation parameters of the first thermal model are adjusted.
[0023] If the difference is less than the second preset threshold, the heat generation coefficient parameter of the first thermal model is adjusted, and an intermediate thermal model is obtained based on the heat power distribution parameter and the heat generation coefficient; the second preset threshold is greater than the first preset threshold.
[0024] In one embodiment, comparing the first dynamic simulation temperature with the actual vehicle test temperature of the clutch, and adjusting the parameters of the intermediate thermal model in a second stage based on the comparison result to obtain the target thermal model of the clutch, includes:
[0025] The temperature in the first dynamic simulation temperature that belongs to the heat dissipation stage is compared with the temperature in the actual vehicle test temperature of the clutch that belongs to the heat dissipation stage to obtain a third comparison result.
[0026] If the third comparison result does not meet the third preset temperature threshold condition, the dynamic heat dissipation parameters of the intermediate thermal model are adjusted to obtain the result.
[0027] The torque parameters are input into the second thermal model of the clutch, and the second dynamic simulation temperature is output.
[0028] The full-stage temperature in the second dynamic simulation temperature is compared with the full-stage temperature in the actual vehicle test temperature of the clutch to obtain the fourth comparison result;
[0029] If the fourth comparison result does not meet the fourth preset temperature threshold condition, the dynamic parameters of the second thermal model are adjusted to obtain the target thermal model.
[0030] In one embodiment, the clutch test bench temperature includes the test bench pressure plate temperature, the test bench driven plate temperature, and the test bench flywheel plate temperature.
[0031] The steps for obtaining the torque parameters and clutch bench test temperature include: obtaining the friction torque of the bench clutch at a preset temperature and a preset engagement position, as measured by the bench calibration device.
[0032] The test temperature of the driven plate of the test bench is obtained by the test bench calibration device when the driven plate of the test bench is fixed and the pressure plate and flywheel rotate to generate heat, and the test temperature of the pressure plate and flywheel of the test bench is obtained when the driven plate is fixed and the pressure plate and flywheel rotate to generate clutch slippage.
[0033] Secondly, this application also provides a processing apparatus for a clutch thermal model. The apparatus includes:
[0034] The data acquisition module is used to acquire clutch test parameters, which include: torque parameters, clutch bench test temperature, and clutch actual vehicle test temperature.
[0035] The first simulation module is used to input the torque parameters into the initial thermal model of the clutch and output the first static simulation temperature.
[0036] The first parameter adjustment module is used to compare the first static simulation temperature with the clutch bench test temperature, and to perform a first-stage parameter adjustment on the initial thermal model based on the comparison result to obtain the intermediate thermal model of the clutch.
[0037] The second simulation module is used to input the torque parameters into the intermediate thermal model and output the first dynamic simulation temperature.
[0038] The second parameter adjustment module is used to compare the first dynamic simulation temperature with the actual vehicle test temperature of the clutch, and to perform a second-stage parameter adjustment on the intermediate thermal model based on the comparison result, so as to obtain the target thermal model of the clutch.
[0039] Thirdly, this application also provides a processing system for a clutch thermal model, the clutch thermal model processing system including a bench calibration device, a vehicle calibration device, and electronic equipment; the bench calibration device and the vehicle calibration device are respectively connected to the electronic equipment;
[0040] The bench calibration device includes: an input motor, an input locking mechanism, an input torque sensor, a support frame with bearing housing, a transmission assembly, a temperature chamber, a drive shaft, an output torque sensor, a bearing housing, an output locking mechanism, an output motor, a bench temperature sensor, and a data acquisition system; the vehicle calibration device includes a vehicle temperature sensor, a signal transmitting device, a data acquisition system, and vehicle equipment.
[0041] The test bench calibration device is used to test and obtain torque parameters and clutch test bench temperature, and outputs them to the electronic equipment.
[0042] The vehicle calibration device is used to test and obtain the actual vehicle test temperature of the clutch and output it to the electronic device.
[0043] Fourthly, this application also provides an electronic device. The electronic device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps of the above-described clutch thermal model processing method.
[0044] Fifthly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, implements the steps of the above-described clutch thermal model processing method.
[0045] Sixthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, implements the steps of a processing method for a clutch thermal model.
[0046] The aforementioned clutch thermal model processing method, system, device, electronic equipment, storage medium, and computer program product acquire clutch test parameters, including torque parameters, clutch bench test temperature, and clutch vehicle test temperature. The torque parameters are input into the initial thermal model of the clutch, outputting a first static simulation temperature. The first static simulation temperature is compared with the clutch bench test temperature, and the initial thermal model undergoes a first-stage parameter adjustment based on the comparison result to obtain an intermediate thermal model. Then, based on the measured clutch bench test temperature and the first static simulation temperature output by each initial thermal model, the initial thermal model undergoes a first-stage parameter adjustment to obtain the intermediate thermal model. Further, the torque parameters are input into the intermediate thermal model, outputting a first dynamic simulation temperature. The first dynamic simulation temperature is compared with the clutch vehicle test temperature, and the intermediate thermal model undergoes a second-stage parameter adjustment based on the comparison result to obtain the target thermal model of the clutch. Thus, by performing first and second-stage parameter adjustments on the initial thermal model to obtain the final target thermal model, the clutch thermal model can be effectively calibrated to improve its reliability and provide guidance for subsequent product design. Attached Figure Description
[0047] Figure 1 This is an application environment diagram of the clutch thermal model processing method in one embodiment;
[0048] Figure 2 This is a schematic diagram of the bench calibration device for a clutch thermal model processing method in one embodiment;
[0049] Figure 3 This is a schematic diagram of the bench calibration device for the clutch thermal model processing method in another embodiment;
[0050] Figure 4 This is a schematic diagram of the bench calibration device for the clutch thermal model processing method in another embodiment;
[0051] Figure 5 This is a schematic diagram of the actual vehicle calibration device for the clutch thermal model processing method in one embodiment;
[0052] Figure 6 This is a flowchart illustrating the processing method of a clutch thermal model in one embodiment;
[0053] Figure 7 This is a flowchart illustrating the processing method for the clutch thermal model in another embodiment;
[0054] Figure 8 This is a flowchart illustrating the processing method for the clutch thermal model in another embodiment;
[0055] Figure 9 This is a flowchart illustrating the processing method for the clutch thermal model in another embodiment;
[0056] Figure 10 This is a structural block diagram of the processing device for a clutch thermal model in one embodiment;
[0057] Figure 11 This is a diagram of the internal structure of an electronic device in one embodiment. Detailed Implementation
[0058] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0059] The clutch thermal model processing method provided in this application embodiment can be applied to, for example... Figure 1 The processing system of the clutch thermal model shown. Among them, Figure 1 The clutch thermal model processing system shown includes an electronic device 102, a bench calibration device 104, and a vehicle calibration device 106. The electronic device 102 is communicatively connected to both the bench calibration device 104 and the vehicle calibration device 106. The bench calibration device 104 can be used to measure the clutch torque parameters and the clutch bench test temperature, while the vehicle calibration device 106 can be used to measure the clutch vehicle test temperature. The electronic device 102 can be, but is not limited to, various control chips, personal computers, laptops, smartphones, tablets, and portable wearable devices. The electronic device 102 can acquire the torque parameters and clutch bench test temperature measured by the bench calibration device 104, and the clutch vehicle test temperature measured by the vehicle calibration device 106. Based on the torque parameters, clutch bench test temperature, and clutch vehicle test temperature, the parameters of the clutch thermal model are adjusted to obtain a calibrated clutch thermal model.
[0060] In one embodiment, such as Figure 2 The diagram shown is a structural schematic of the bench calibration device 104 in one embodiment:
[0061] The bench calibration device may include the following structures: 1-input motor, 2-input locking mechanism, 3-input torque sensor, 4-support frame with bearing housing, 5-transmission assembly (which may include clutch flywheel disc, clutch driven disc, clutch pressure plate and transmission controller), 6-temperature chamber, 7-drive shaft, 8-output torque sensor, 9-bearing housing, 10-output locking mechanism, 11-output motor.
[0062] In one embodiment, the 2-input locking mechanism and the 10-output locking mechanism can fix the rotating shaft through a mechanical structure, and the locking torque can be greater than 1000 Nm.
[0063] In one embodiment, reference Figure 3 The diagram shown is a structural schematic of a bench calibration device in another embodiment. The bench calibration device may further include a data acquisition system 12 (temperature sensor), a data acquisition system 13, and a transmission assembly 5 (which may include a clutch flywheel disc, a clutch driven disc, a clutch pressure disc, and a transmission controller). Figure 3 In this system, the clutch flywheel disc, clutch pressure plate, transmission controller, and torque sensor are connected to the data acquisition system. The data acquisition system can then output the real-time collected clutch flywheel disc temperature, clutch pressure plate temperature, torque sensor signal, and transmission signal to the electronic equipment via wired connection.
[0064] In one embodiment, reference Figure 4 The diagram shown is a structural schematic of the bench calibration device in another embodiment, wherein... Figure 4 In this system, the clutch driven plate, transmission controller, and torque sensor are connected to the data acquisition system. The data acquisition system can then output the real-time acquired clutch driven plate temperature, torque sensor signals, and transmission signals to the electronic equipment via wired connection.
[0065] In one embodiment, such as Figure 5 The diagram shown is a structural schematic of the vehicle calibration device 106 in a specific embodiment:
[0066] The vehicle calibration device 106 may include 14-temperature sensor, 15-telemetry-signal transmitter, 13-data acquisition system, and 16-vehicle equipment. Specifically, 14-temperature sensor can be attached to the clutch pressure plate and the temperature signal can be transmitted through 15-telemetry-wireless transmitter. The data acquisition system can wirelessly acquire the clutch temperature through 15-telemetry-wireless receiver, and receive the clutch position and slip speed signals from the transmission controller and the ambient temperature signal from the engine controller through the CAN bus. Finally, the data acquisition system sends the acquired signals to the electronic device 102.
[0067] In one embodiment, the electronic device 102 acquires clutch test parameters, including torque parameters, clutch bench test temperature, and clutch vehicle test temperature. The torque parameters are input to the initial thermal model of the clutch, and a first static simulation temperature is output. The first static simulation temperature is compared with the clutch bench test temperature, and the parameters of the initial thermal model are adjusted in the first stage according to the comparison result to obtain an intermediate thermal model of the clutch. The torque parameters are input to the intermediate thermal model, and a first dynamic simulation temperature is output. The first dynamic simulation temperature is compared with the clutch vehicle test temperature, and the parameters of the intermediate thermal model are adjusted in the second stage according to the comparison result to obtain a target thermal model of the clutch.
[0068] In one embodiment, such as Figure 6 As shown, a clutch thermal model method is provided, which is applied to... Figure 1 Taking electronic device 102 as an example, the following steps are included:
[0069] Step S602: Obtain clutch test parameters, including torque parameters, clutch bench test temperature, and clutch actual vehicle test temperature.
[0070] The clutch test parameters refer to those measured by the bench calibration device and the vehicle calibration device. Specifically, the torque parameter can be the parameter measured by the torque sensor on the bench calibration device. The clutch bench test temperature refers to the temperature measured by the bench calibration device, while the clutch vehicle test temperature can be the temperature measured by the vehicle calibration device.
[0071] Step S604: Input the torque parameters into the initial thermal model of the clutch and output the first static simulation temperature.
[0072] The thermal model can refer to a simulation model that outputs the clutch temperature by simulating the working conditions of the clutch. The initial thermal model is a model in which the relevant parameters of the thermal model are adjusted. The first static simulation temperature can refer to the clutch simulation temperature obtained by the initial thermal model. Specifically, the first static simulation temperature can be the clutch simulation temperature during the entire process of the clutch rising from the temperature to the limit temperature (such as 200° or other temperatures) and then falling from the limit temperature to the ambient temperature (such as 30° or other temperatures). Specifically, the first static simulation temperature can include the driven plate simulation temperature, the pressure plate simulation temperature, and the flywheel plate temperature, etc.
[0073] In one embodiment, the initial thermal model may include a clutch heat generation sub-model, a clutch static heat dissipation sub-model, and a clutch dynamic heat dissipation sub-model. Torque parameters are input into the initial thermal model of the clutch, and a first static simulation temperature is output, including:
[0074] The torque parameters are input into the clutch heat generation sub-model to obtain the clutch heat generation power. The clutch heat generation power is used as the input to the clutch static heat dissipation sub-model and the clutch dynamic heat dissipation sub-model to output the first static simulation temperature.
[0075] When the electronic device inputs the torque parameters into the thermal model, the friction torque at any temperature and engagement position can be determined through the clutch heat generation sub-model. Then, the clutch heat generation power can be determined through the heat generation power calculation formula. The clutch heat generation power is used as the input of the clutch static heat dissipation sub-model and the clutch dynamic heat dissipation sub-model to obtain the first static simulation temperature output by the initial thermal model.
[0076] In one embodiment, the formula for calculating the heat generation power of the clutch is as follows:
[0077] P = T * n / 9550
[0078] Where P represents the clutch heat generation power (unit: kW), T represents the friction torque (unit: Nm), and n represents the rotational speed (r / min).
[0079] Step S606: Compare the first static simulation temperature with the clutch bench test temperature, and adjust the parameters of the initial thermal model in the first stage according to the comparison results to obtain the intermediate thermal model of the clutch.
[0080] The parameters in the first stage can refer to the parameters that need to be adjusted during the first stage of adjustment. Specifically, the parameters in the first stage can refer to the parameters related to the static heat dissipation sub-model of the initial thermal model. After obtaining the first static simulation temperature and the bench test temperature, the electronic device can compare the first static simulation temperature and the bench test temperature to obtain the comparison result. Then, based on the comparison result, the parameters of the initial thermal model are adjusted in the first stage to obtain the intermediate thermal model of the clutch.
[0081] Step S608: Input the torque parameters into the intermediate thermal model and output the first dynamic simulation temperature.
[0082] The first dynamic simulation temperature refers to the simulation temperature of the clutch obtained from the intermediate thermal model. After obtaining the intermediate thermal model, the electronic equipment can input the torque parameters into the intermediate thermal model to obtain the first dynamic simulation temperature.
[0083] Step S610: Compare the first dynamic simulation temperature with the actual vehicle test temperature of the clutch, and adjust the parameters of the intermediate thermal model in the second stage according to the comparison results to obtain the target thermal model of the clutch.
[0084] After obtaining the first dynamic simulation temperature and the actual vehicle test temperature of the clutch, the electronic equipment can compare the first dynamic simulation temperature and the actual vehicle test temperature of the clutch to obtain the comparison result. Then, based on the comparison result, the intermediate thermal model is adjusted in the second stage to obtain the target thermal model of the clutch.
[0085] In the above-mentioned method for processing the clutch thermal model, clutch test parameters are obtained, including torque parameters, clutch bench test temperature, and clutch vehicle test temperature. The torque parameters are input into the initial thermal model of the clutch, outputting a first static simulation temperature. The first static simulation temperature is compared with the clutch bench test temperature, and the parameters of the initial thermal model are adjusted in the first stage based on the comparison result to obtain an intermediate thermal model of the clutch. Then, based on the measured clutch bench test temperature and the first static simulation temperature output by each initial thermal model, the parameters of the initial thermal model are adjusted for the first time to obtain the intermediate thermal model. Further, the torque parameters are input into the intermediate thermal model, outputting a first dynamic simulation temperature. The first dynamic simulation temperature is compared with the clutch vehicle test temperature, and the parameters of the intermediate thermal model are adjusted in the second stage based on the comparison result to obtain the target thermal model of the clutch. Thus, by performing the first and second stages of parameter adjustments on the initial thermal model, the final target thermal model is obtained, which can effectively calibrate the clutch thermal model, improve its reliability, and provide guidance for subsequent product design.
[0086] In one embodiment, the first static simulation temperature is compared with the clutch bench test temperature, and the parameters of the initial thermal model are adjusted in the first stage based on the comparison result to obtain the intermediate thermal model of the clutch, including:
[0087] Step S702: Compare the temperature in the heat dissipation stage of the first static simulation temperature with the temperature in the heat dissipation stage of the clutch bench test temperature to obtain the first comparison result.
[0088] In the first static simulation temperature, the temperature belonging to the heat dissipation stage can refer to the clutch simulation temperature output by the initial thermal model during the cooling process (from the extreme temperature to the ambient temperature). Similarly, the temperature belonging to the heat dissipation stage in the clutch bench test temperature can also refer to the test temperature obtained during the cooling process (from the extreme temperature to the ambient temperature).
[0089] After obtaining the temperatures in the first static simulation temperature corresponding to the heat dissipation stage and the temperatures in the clutch bench test temperature corresponding to the heat dissipation stage, the electronic equipment can compare the first static simulation temperature and the clutch bench test temperature during the heat dissipation stage. For example, the first static simulation temperature includes the temperatures corresponding to three specific moments during the process of the clutch driven plate temperature decreasing from the limit temperature to the ambient temperature, such as 60°, 45°, and 37°. The clutch bench test temperature can also be the temperatures corresponding to the specific moments during the process of the clutch driven plate temperature decreasing from the limit temperature to the ambient temperature, such as 78°, 55°, and 40°. The electronic equipment can compare the temperatures according to the specific moments, or it can calculate the average of the temperatures before comparison. The specific comparison method can be adjusted adaptively according to the actual situation, as long as the temperature difference between the first static simulation temperature and the bench test temperature can be determined.
[0090] Step S704: If the first comparison result does not meet the first preset temperature threshold condition, the static heat dissipation parameters of the initial thermal model are adjusted to obtain the first thermal model.
[0091] The first preset temperature threshold condition can refer to the temperature range that the temperature difference between the heat dissipation stages should meet. For example, the first preset temperature threshold condition can be that the temperature difference between the heat dissipation stages should be less than 10°C, less than 15°C, or less than 20°C. The specific first preset temperature threshold condition can be set according to the actual situation. The static heat dissipation parameters of the thermal model can refer to the parameters related to the static heat dissipation sub-model of the clutch in the initial thermal model, such as the fluid coefficient.
[0092] In one embodiment, the first preset temperature threshold condition is that the temperature difference between the temperatures during the heat dissipation stage should be less than 10°. If the comparison result between the first static simulation temperature and the clutch bench test temperature during the heat dissipation stage is that the temperature difference between the two is greater than 10 degrees, it indicates that the first preset temperature threshold condition is not met. The electronic device can adjust the heat dissipation parameters of the initial thermal model to obtain the first thermal model.
[0093] Step S706: Input the torque parameters into the first thermal model of the clutch and output the second static simulation temperature.
[0094] The second static simulation temperature can refer to the clutch simulation temperature obtained from the first thermal model simulation. Specifically, the second static simulation temperature can be the clutch simulation temperature during the entire process from the clutch temperature rising to the limit temperature (such as 200° or other temperatures) and then decreasing from the limit temperature to the ambient temperature (such as 30° or other temperatures). Specifically, the second static simulation temperature can include the driven plate simulation temperature, the pressure plate simulation temperature, and the flywheel plate temperature.
[0095] In this process, after obtaining the first thermal model, the electronic device can input the torque parameters into the first thermal model to obtain the second static simulation temperature.
[0096] Step S708: Compare the temperature in the heat generation stage of the second static simulation temperature with the temperature in the heat generation stage of the clutch bench test temperature to obtain the second comparison result.
[0097] Among them, the temperature in the second static simulation temperature that belongs to the heat generation stage can refer to the clutch simulation temperature output by the first thermal model during the heating process (from ambient temperature to extreme temperature). Similarly, the clutch bench test temperature can refer to the test temperature obtained during the heating process (from ambient temperature to extreme temperature).
[0098] After obtaining the temperatures in the first static simulation temperature corresponding to the heat generation stage and the temperatures in the clutch bench test temperature corresponding to the heat generation stage, the electronic equipment can compare the second static simulation temperature and the clutch bench test temperature in the heat generation stage. For example, the first static simulation temperature includes the temperatures corresponding to three time points during the process of the clutch pressure plate temperature rising from the ambient temperature to the limit temperature, such as 30°, 50°, and 80°. The clutch bench test temperature can also be the temperatures corresponding to the corresponding time points during the process of the clutch driven plate temperature rising from the ambient temperature to the limit temperature, such as 45°, 67°, and 89°. The electronic equipment compares the temperatures according to the time points, or it can calculate the average of the temperatures before comparison. The specific comparison method can be adaptively adjusted according to the actual situation, as long as the temperature difference between the second static simulation temperature and the clutch bench test temperature can be determined.
[0099] Step S710: If the second comparison result does not meet the second preset temperature threshold condition, the static heat generation parameters of the first thermal model are adjusted to obtain an intermediate thermal model.
[0100] The second preset temperature threshold condition can refer to the temperature range that the temperature difference between the heat generation stages should meet. For example, the second preset temperature threshold condition can be that the temperature difference between the heat generation stages should be less than 10°, less than 15°, or less than 20°. Specifically, the second preset temperature threshold condition can be set according to the actual situation.
[0101] In one embodiment, the second preset temperature threshold condition is that the temperature difference between the temperatures in the heat dissipation stage should be less than 15°. If the comparison result between the second static simulation temperature and the clutch bench test temperature in the heat generation stage is that the temperature difference between the two is greater than 15°, it indicates that the second preset temperature threshold condition is not met. The electronic device can adjust the static heat generation parameters of the first thermal model to obtain an intermediate thermal model.
[0102] In the above embodiments, adjustments are made to the static heat dissipation parameters and static heat generation parameters of the thermal model, respectively. The thermal model is calibrated by adjusting from the initial thermal model to the first thermal model and then from the first thermal model to the intermediate thermal model. By gradually adjusting the parameters of the thermal model, the calibration accuracy is improved.
[0103] In one embodiment, the second comparison result includes the difference between the temperature in the heat generation stage of the second static simulation temperature and the temperature in the heat generation stage of the clutch bench test temperature; the static heat generation parameters of the thermal model include heat power distribution parameters and heat generation coefficients. If the second comparison result does not meet the second preset temperature threshold condition, the heat generation parameters of the first thermal model are adjusted to obtain an intermediate thermal model, including:
[0104] If the difference is less than the first preset threshold, the heat power distribution parameters of the first thermal model are adjusted.
[0105] If the difference is less than the second preset threshold, the heat generation coefficient parameter of the first thermal model is adjusted. Based on the heat power distribution parameter and the heat generation coefficient adjustment, an intermediate thermal model is obtained; the second preset threshold is greater than the first preset threshold.
[0106] Among them, the heat power distribution parameter refers to the proportion coefficient of energy absorbed by the pressure plate, driven plate, and flywheel plate in the slip friction work of the clutch. The first preset threshold refers to the first temperature condition that the difference between the temperature in the heat generation stage in the second static simulation temperature and the temperature in the heat generation stage in the clutch bench test temperature should meet. Specifically, the first temperature threshold can be that the difference should be less than 10°. When the difference is less than the first preset threshold, the heat power distribution parameter of the first thermal model is adjusted.
[0107] The second preset threshold refers to the second temperature condition that the difference between the temperature in the second static simulation temperature that belongs to the heat generation stage and the temperature in the clutch bench test temperature that belongs to the heat generation stage should meet. Specifically, the first temperature threshold can be that the difference should be less than 15°. When the difference is less than the second preset threshold, the heat generation coefficient of the first thermal model is adjusted.
[0108] In the above embodiments, the reliability of the thermal model calibration can be improved by adjusting the heat power distribution parameters and the heat generation coefficient parameters.
[0109] In one embodiment, the first dynamic simulation temperature is compared with the actual vehicle test temperature of the clutch, and the intermediate thermal model is adjusted in a second stage based on the comparison results to obtain the target thermal model of the clutch, including the following steps:
[0110] Step S802: Compare the temperature in the first dynamic simulation temperature that belongs to the heat dissipation stage with the temperature in the clutch actual vehicle test temperature that belongs to the heat dissipation stage to obtain the third comparison result.
[0111] In the first dynamic simulation temperature, the temperature belonging to the heat dissipation stage can refer to the clutch simulation temperature output by the intermediate thermal model during the cooling process (from the extreme temperature to the ambient temperature). Similarly, the temperature belonging to the heat dissipation stage in the clutch real vehicle test temperature can refer to the test temperature obtained by using a real vehicle test device during the cooling process (from the extreme temperature to the ambient temperature).
[0112] After obtaining the temperature in the first dynamic simulation temperature corresponding to the heat dissipation stage and the temperature in the clutch actual vehicle test temperature corresponding to the heat dissipation stage, the electronic equipment can compare the first dynamic simulation temperature and the clutch bench test temperature during the heat dissipation stage. For example, the first dynamic simulation temperature includes the temperature corresponding to three time points during the process of the clutch flywheel disc temperature dropping from the limit temperature to the ambient temperature, such as 180°, 145°, and 120°. The clutch bench test temperature can also be the temperature corresponding to the corresponding time points during the process of the clutch flywheel disc temperature dropping from the limit temperature to the ambient temperature, such as 200°, 178°, and 167°. The electronic equipment compares the temperatures according to the time points, or it can calculate the average of the temperatures before comparison. The specific comparison method can be adaptively adjusted according to the actual situation, as long as the temperature difference between the first dynamic simulation temperature and the clutch bench test temperature can be determined.
[0113] Step S804: If the third comparison result does not meet the third preset temperature threshold condition, the dynamic heat dissipation parameters of the intermediate thermal model are adjusted to obtain the second thermal model.
[0114] The third preset temperature threshold condition can refer to the temperature range that the temperature difference between the temperatures in the heat dissipation stage should meet. For example, the third preset temperature threshold condition can be that the temperature difference between the temperatures in the heat dissipation stage should be less than 10°, or it can be that the temperature difference between the temperatures in the heat dissipation stage should be less than 15°, or it can be that the temperature difference between the temperatures in the heat dissipation stage should be less than 20°. The specific first preset temperature threshold condition can be set according to the actual situation.
[0115] Step S806: Input the torque parameters into the second thermal model of the clutch and output the second dynamic simulation temperature.
[0116] In this process, after obtaining the second thermal model, the electronic device can input the torque parameters into the second thermal model to obtain the second dynamic simulation temperature.
[0117] Step S808: Compare the full-stage temperature in the second dynamic simulation temperature with the full-stage temperature of the clutch actual vehicle test temperature to obtain the fourth comparison result.
[0118] The full-stage temperature refers to the clutch simulation temperature output by the second thermal model, which ranges from ambient temperature to the limit temperature and then from the limit temperature back to ambient temperature. Similarly, the full-stage temperature of the clutch real vehicle test temperature can also refer to the temperature obtained by testing with a real vehicle testing device, which ranges from ambient temperature to the limit temperature and then from the limit temperature back to ambient temperature.
[0119] The electronic device can compare the full-stage temperature in the second dynamic simulation temperature with the full-stage temperature of the clutch actual vehicle test temperature to obtain a fourth comparison result.
[0120] Step S810: If the fourth comparison result does not meet the fourth preset temperature threshold condition, the dynamic parameters of the second thermal model are adjusted to obtain the target thermal model.
[0121] The target thermal model refers to the final determined thermal model. The fourth preset temperature threshold condition can refer to the temperature range that the temperature difference between the temperatures in the entire stage should meet. For example, the four preset temperature threshold conditions can be that the temperature difference between the temperatures in the entire stage should be less than 10°, or the temperature difference between the temperatures in the entire stage should be less than 15°, or the temperature difference between the temperatures in the entire stage should be less than 20°. Specifically, the four preset temperature threshold conditions can be set according to the actual situation.
[0122] In the above embodiments, the electronic device adjusts the dynamic heat dissipation parameters of the thermal model. The thermal model is calibrated by adjusting from the intermediate thermal model to the second thermal model and then from the second thermal model to the target thermal model. By gradually adjusting the parameters of the thermal model, the calibration accuracy is improved.
[0123] In one embodiment, the clutch bench test temperature includes the bench pressure plate test temperature, the bench driven plate test temperature, and the bench flywheel plate test temperature; the steps for obtaining the torque parameters and the clutch bench test temperature include:
[0124] The friction torque of the bench clutch at a preset temperature and a preset engagement position is obtained by the bench calibration device; the bench driven plate test temperature is obtained by the bench calibration device when the bench driven plate is stationary and the pressure plate and flywheel rotate to generate heat, and the bench pressure plate test temperature and bench flywheel test temperature are obtained by the bench calibration device when the driven plate is stationary and the pressure plate and flywheel rotate to generate clutch slippage.
[0125] Among them, the torque parameter can be the friction torque of the clutch at typical temperature and typical engagement position measured by the torque sensor. The typical temperature can be determined based on the actual temperature change of the clutch during operation. The typical engagement position can refer to any position within the range of the clutch fully engaged position to the clutch critical contact position.
[0126] The "keeping the driven plate stationary" configuration refers to installing a temperature sensor on the clutch driven plate, with the input lock-up mechanism in an unlocked state, the transmission engaged in direct drive, the output lock-up mechanism in a locked state, and the input motor running at a constant speed to control the alternating engagement and disengagement of the clutch. In this configuration, the driven plate temperature can be obtained. Similarly, the "keeping the pressure plate stationary" configuration involves installing temperature sensors on the clutch flywheel and pressure plate on the calibration device, with the input lock-up mechanism in a locked state, the transmission engaged in direct drive, the output lock-up mechanism in an unlocked state, and the output motor running at a constant speed to control the alternating engagement and disengagement of the clutch. In this configuration, both the pressure plate and flywheel temperatures can be obtained.
[0127] In the above embodiments, obtaining torque parameters and clutch bench test temperature through the bench calibration device can effectively improve calibration accuracy.
[0128] In one embodiment, when the clutch is in operation, its actual temperature change can be between -30°C and 200°C, and typical temperatures can include -30°C, -15°C, 0°C, 30°C, 100°C, 150°C, and 200°C.
[0129] In one embodiment, such as Figure 9 The diagram shown is a flowchart illustrating the processing method for the clutch thermal model in a specific embodiment:
[0130] In this embodiment, two testing devices and an electronic device are involved. The two testing devices are a bench calibration device and a vehicle calibration device. The electronic device completes the calibration of the clutch thermal model by acquiring the test parameters of the bench calibration device and the vehicle calibration device.
[0131] Specifically, the bench calibration device includes an input motor, an input locking mechanism, an input torque sensor, a support frame with bearing housings, a transmission assembly, a temperature chamber, a drive shaft, an output torque sensor, bearing housings, an output locking mechanism, an output motor, a temperature sensor, and a data acquisition system. The locking mechanism uses a mechanical structure to fix the rotating shaft, and the locking torque can be no less than 1000 Nm. The data acquisition system can acquire temperature signals, torque sensor signals, and the CAN signal output by the transmission in real time via wired connection. The transmission controller can output clutch position and slip speed signals. The bench calibration device can perform clutch torque-position relationship tests, heat generation tests, and static heat dissipation tests.
[0132] For the vehicle calibration device, a temperature sensor is attached to the clutch pressure plate and the temperature signal is transmitted through a telemetry-wireless transmitter. The data acquisition system can wirelessly acquire the clutch temperature signal through the telemetry-wireless receiver, and receive the clutch position and slip speed signals from the transmission controller and the ambient temperature signal from the engine controller through the CAN signal. In other words, the vehicle calibration device can complete the heat generation and dynamic heat dissipation test.
[0133] Furthermore, the clutch thermal model in this embodiment consists of a heat generation model, a static heat dissipation model, and a dynamic heat dissipation model. Therefore, the electronic device can calibrate the clutch thermal model by acquiring the clutch torque-position relationship test results, heat generation and static heat dissipation test results, and heat generation and dynamic heat dissipation test results.
[0134] The test process for the clutch torque-position relationship can be performed using a bench calibration device. During testing, the transmission sample to be tested is mounted on the bench calibration device. The ambient temperature of the clutch is varied by a temperature chamber, maintaining it between -30°C and 30°C. Clutch slippage is controlled to maintain the clutch temperature between -30°C and 200°C. Typical test temperatures and typical position ranges are selected within this range to complete the clutch torque-position relationship test. Specifically, typical temperatures can include -30°C, -15°C, 0°C, 30°C, 100°C, 150°C, and 200°C, and typical position ranges can be from the fully engaged clutch position to the critical contact clutch position. This is used to test the clutch torque-position relationship.
[0135] During the test of the clutch torque-position relationship, the friction torque T of the clutch at any temperature and engagement position can be determined by looking up the linear difference of typical test results in a table. Then, the heat generation power can be calculated in the heat generation model using the formula P = T * n / 9550 to complete the calibration of the heat generation model.
[0136] After the heat generation model is calibrated, the temperature rise and fall tests of the clutch pressure plate, non-wheel plate, and driven plate can be performed according to the clutch heat generation and static heat dissipation test methods to determine the test temperatures of the clutch pressure plate, non-wheel plate, and driven plate.
[0137] Specifically, the temperature of the clutch flywheel and pressure plate is tested. Temperature sensors are installed on the clutch flywheel and pressure plate on a test bench. The input locking mechanism is locked, the transmission is engaged in direct drive, the output locking mechanism is unlocked, and the output motor runs at a constant speed to control the clutch to alternately engage and disengage. After the clutch slip temperature rises to its limit, the output motor stops running until the clutch temperature drops to ambient temperature. The data acquisition system can record the ambient temperature, clutch flywheel and pressure plate temperatures, clutch position, clutch slip speed, and input torque sensor data throughout the process.
[0138] Specifically, when testing the clutch driven plate temperature, a temperature sensor is installed on the clutch driven plate on a test bench calibration device. The input locking mechanism is in an unlocked state, the transmission is engaged in direct drive, the output locking mechanism is in a locked state, the input motor runs at a constant speed, and the clutch is alternately engaged and disengaged, causing the clutch slip temperature to rise to the limit temperature. The input motor then stops running until the clutch temperature drops to the ambient temperature. The data acquisition system records the ambient temperature, clutch driven plate temperature, clutch position, clutch slip speed, and input torque sensor data throughout the process.
[0139] Furthermore, the electronic equipment completes the calibration of heat dissipation-related parameters in the static heat dissipation model according to the clutch static heat dissipation model calibration method, and completes the calibration of the heat power distribution coefficient according to the clutch heat power distribution coefficient calibration method, that is, the proportion coefficient of energy absorbed by the pressure plate, driven plate and flywheel plate in the slip friction work of the clutch.
[0140] After the clutch heat generation and dynamic heat dissipation test is completed on the actual vehicle calibration device, the electronic equipment uses the temperature data recorded throughout the process to complete the calibration of the speed-related parameters in the clutch dynamic heat dissipation model according to the clutch dynamic heat dissipation model calibration method. When the clutch heat generation and dynamic heat dissipation test is completed on the actual vehicle calibration device, the test data should include at least three typical data segments (i.e., three different vehicle speeds).
[0141] Finally, following the final thermal model calibration method for the clutch, all thermal model parameters were calibrated to obtain the target thermal model.
[0142] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.
[0143] Based on the same inventive concept, this application also provides a clutch thermal model processing apparatus for implementing the clutch thermal model processing method described above. The solution provided by this apparatus is similar to the implementation described in the above method; therefore, the specific limitations of one or more clutch thermal model processing apparatus embodiments provided below can be found in the limitations of the clutch thermal model processing method described above, and will not be repeated here.
[0144] In one embodiment, such as Figure 10 As shown, a processing device for a clutch thermal model is provided, comprising: a data acquisition module, a first simulation module, a first parameter adjustment module, a second simulation module, and a second parameter adjustment module, wherein:
[0145] The data acquisition module 1002 is used to acquire clutch test parameters, including torque parameters, clutch bench test temperature, and clutch actual vehicle test temperature.
[0146] The first simulation module 1004 is used to input torque parameters into the initial thermal model of the clutch and output the first static simulation temperature.
[0147] The first parameter adjustment module 1006 is used to compare the first static simulation temperature with the clutch bench test temperature, and to perform a first-stage parameter adjustment on the initial thermal model based on the comparison result, so as to obtain the intermediate thermal model of the clutch.
[0148] The second simulation module 1008 is used to input torque parameters into the intermediate thermal model and output the first dynamic simulation temperature.
[0149] The second parameter adjustment module 1010 is used to compare the first dynamic simulation temperature with the actual vehicle test temperature of the clutch, and to perform a second-stage parameter adjustment on the intermediate thermal model based on the comparison results, so as to obtain the target thermal model of the clutch.
[0150] In one embodiment, the first simulation module is used to input torque parameters into the clutch heat generation sub-model to obtain the clutch heat generation power. The clutch heat generation power is used as the input of the clutch static heat dissipation sub-model and the clutch dynamic heat dissipation sub-model to output the first static simulation temperature.
[0151] In one embodiment, the first parameter adjustment module is further configured to compare the temperature belonging to the heat dissipation stage in the first static simulation temperature with the temperature belonging to the heat dissipation stage in the clutch bench test temperature to obtain a first comparison result; if the first comparison result does not meet the first preset temperature threshold condition, the static heat dissipation parameters of the initial thermal model are adjusted to obtain a first thermal model; the torque parameter is input to the first thermal model of the clutch, and a second static simulation temperature is output; the temperature belonging to the heat generation stage in the second static simulation temperature is compared with the temperature belonging to the heat generation stage in the clutch bench test temperature to obtain a second comparison result. If the second comparison result does not meet the second preset temperature threshold condition, the static heat generation parameters of the first thermal model are adjusted to obtain an intermediate thermal model.
[0152] In one embodiment, the first parameter adjustment module is further configured to adjust the heat power distribution parameter of the first thermal model if the difference is less than a first preset threshold; and adjust the heat generation coefficient parameter of the first thermal model if the difference is less than a second preset threshold, and obtain an intermediate thermal model based on the heat power distribution parameter and the heat generation coefficient after adjustment; the second preset threshold is greater than the first preset threshold.
[0153] In one embodiment, the second parameter adjustment module is used to adjust the dynamic heat dissipation parameters of the intermediate thermal model to obtain a second thermal model if the third comparison result does not meet the third preset temperature threshold condition; input the torque parameter to the second thermal model of the clutch and output the third static simulation temperature; compare the full-stage temperature in the third static simulation temperature with the full-stage temperature in the clutch real vehicle test temperature to obtain a fourth comparison result; if the fourth comparison result does not meet the fourth preset temperature threshold condition, adjust the dynamic parameters of the second thermal model to obtain the target thermal model.
[0154] In one embodiment, the data acquisition module is used to acquire the friction torque of the bench clutch at a preset temperature and a preset engagement position, as measured by the bench calibration device; acquire the bench pressure plate test temperature when the driven plate and flywheel rotate and generate heat while the bench pressure plate is fixed, as measured by the bench calibration device; and acquire the bench driven plate test temperature and bench flywheel test temperature when the driven plate and non-wheel plate are fixed and the pressure plate rotates to generate clutch slippage.
[0155] Each module in the aforementioned clutch thermal model processing device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of the electronic device in hardware form or independently of it, or stored in the memory of the electronic device in software form, so that the processor can call and execute the operations corresponding to each module.
[0156] In one embodiment, an electronic device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 11 As shown, this electronic device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a method for processing a clutch thermal model. The display unit is used to form a visually visible image and can be a display screen, projection device, or virtual reality imaging device. The display screen can be an LCD screen or an e-ink screen. The input device of the electronic device can be a touch layer covering the display screen, or buttons, trackballs, or touchpads set on the casing of the electronic device, or external keyboards, touchpads, or mice, etc.
[0157] Those skilled in the art will understand that Figure 11 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the electronic device to which the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.
[0158] In one embodiment, a clutch thermal model processing system is provided, which includes a bench calibration device, a vehicle calibration device, and electronic equipment; the bench calibration device and the vehicle calibration device are respectively connected to the electronic equipment.
[0159] The bench calibration device includes: an input motor, an input locking mechanism, an input torque sensor, a support frame with bearing housing, a transmission assembly, a temperature chamber, a drive shaft, an output torque sensor, a bearing housing, an output locking mechanism, an output motor, a bench temperature sensor, and a data acquisition system; the vehicle calibration device includes a vehicle temperature sensor, a signal transmitting device, a data acquisition system, and vehicle equipment; the bench calibration device is used to test and obtain torque parameters and clutch bench test temperature, and outputs them to electronic equipment; the vehicle calibration device is used to test and obtain clutch vehicle test temperature, and outputs it to the electronic equipment.
[0160] In one embodiment, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the above-described clutch thermal model processing method.
[0161] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program being executed by a processor to implement the steps of a processing method for a clutch thermal model.
[0162] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps of a processing method for a clutch thermal model.
[0163] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile 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. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.
[0164] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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 specification.
[0165] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.
Claims
1. A method for processing a clutch thermal model, characterized in that, The method includes: Obtain clutch test parameters, including: torque parameters, clutch bench test temperature, and clutch actual vehicle test temperature; The torque parameters are input into the initial thermal model of the clutch, and the first static simulation temperature is output. The first static simulation temperature is compared with the clutch bench test temperature, and the parameters of the initial thermal model are adjusted in the first stage according to the comparison results to obtain the intermediate thermal model of the clutch. The torque parameters are input into the intermediate thermal model, and the first dynamic simulation temperature is output. The first dynamic simulation temperature is compared with the actual vehicle test temperature of the clutch, and the parameters of the intermediate thermal model are adjusted in the second stage according to the comparison results to obtain the target thermal model of the clutch. The initial thermal model includes a clutch heat generation sub-model, a clutch static heat dissipation sub-model, and a clutch dynamic heat dissipation sub-model. The step of inputting the torque parameters into the initial thermal model of the clutch and outputting the first static simulation temperature includes: The torque parameters are input into the clutch heat generation sub-model to obtain the clutch heat generation power. The clutch heat generation power is used as the input to the clutch static heat dissipation sub-model and the clutch dynamic heat dissipation sub-model, and the first static simulation temperature is output.
2. The method according to claim 1, characterized in that, The step of comparing the first static simulation temperature with the clutch bench test temperature, and adjusting the parameters of the initial thermal model in the first stage based on the comparison result to obtain the intermediate thermal model of the clutch includes: The temperature in the first static simulation temperature that belongs to the heat dissipation stage is compared with the temperature in the clutch bench test temperature that belongs to the heat dissipation stage to obtain the first comparison result. If the first comparison result does not meet the first preset temperature threshold condition, the static heat dissipation parameters of the initial thermal model are adjusted to obtain the first thermal model. The torque parameters are input into the first thermal model of the clutch, and the second static simulation temperature is output. The temperature in the second static simulation temperature that belongs to the heat generation stage is compared with the temperature in the clutch bench test temperature that belongs to the heat generation stage to obtain a second comparison result. If the second comparison result does not meet the second preset temperature threshold condition, the static heat generation parameters of the first thermal model are adjusted to obtain an intermediate thermal model.
3. The method according to claim 2, characterized in that, The second comparison result includes the difference between the temperature in the heat generation stage in the second static simulation temperature and the temperature in the heat generation stage in the clutch bench test temperature. The static heat generation parameters of the thermal model include heat power distribution parameters and heat generation coefficient; If the second comparison result does not meet the second preset temperature threshold condition, the static heat generation parameters of the first thermal model are adjusted to obtain an intermediate thermal model, including: If the difference is less than a first preset threshold, the heat power allocation parameters of the first thermal model are adjusted. If the difference is less than the second preset threshold, the heat generation coefficient parameter of the first thermal model is adjusted, and an intermediate thermal model is obtained based on the adjusted heat power distribution parameter and heat generation coefficient; the second preset threshold is greater than the first preset threshold.
4. The method according to claim 1, characterized in that, The step of comparing the first dynamic simulation temperature with the actual vehicle test temperature of the clutch, and adjusting the parameters of the intermediate thermal model in the second stage based on the comparison result to obtain the target thermal model of the clutch includes: The temperature in the first dynamic simulation temperature that belongs to the heat dissipation stage is compared with the temperature in the actual vehicle test temperature of the clutch that belongs to the heat dissipation stage to obtain a third comparison result. If the third comparison result does not meet the third preset temperature threshold condition, the dynamic heat dissipation parameters of the intermediate thermal model are adjusted to obtain the result. The torque parameters are input into the second thermal model of the clutch, and the second dynamic simulation temperature is output. The full-stage temperature in the second dynamic simulation temperature is compared with the full-stage temperature in the actual vehicle test temperature of the clutch to obtain the fourth comparison result; If the fourth comparison result does not meet the fourth preset temperature threshold condition, the dynamic parameters of the second thermal model are adjusted to obtain the target thermal model.
5. The method according to any one of claims 1-4, characterized in that, The clutch bench test temperature includes the bench pressure plate test temperature, the bench driven plate test temperature, and the bench flywheel plate test temperature. The steps for obtaining the torque parameters and clutch bench test temperature include: obtaining the friction torque of the bench clutch at a preset temperature and a preset engagement position, as measured by the bench calibration device. The test temperature of the driven plate of the test bench is obtained by the test bench calibration device when the driven plate of the test bench is fixed and the pressure plate and flywheel rotate to generate heat, and the test temperature of the pressure plate and flywheel of the test bench is obtained when the driven plate is fixed and the pressure plate and flywheel rotate to generate clutch slippage.
6. An electronic device, characterized in that, The method includes a memory and a processor, the memory storing a computer program, characterized in that the processor executes the computer program to implement the steps of the method according to any one of claims 1 to 5.
7. A system for processing a clutch thermal model, characterized in that, The clutch thermal model processing system includes a bench calibration device, a vehicle calibration device, and the electronic equipment as described in claim 6; the bench calibration device and the vehicle calibration device are respectively connected to the electronic equipment; The bench calibration device includes: an input motor, an input locking mechanism, an input torque sensor, a support frame with bearing housing, a transmission assembly, a temperature chamber, a drive shaft, an output torque sensor, a bearing housing, an output locking mechanism, an output motor, a bench temperature sensor, and a data acquisition system; the vehicle calibration device includes a vehicle temperature sensor, a signal transmitting device, a data acquisition system, and vehicle equipment. The test bench calibration device is used to test and obtain torque parameters and clutch test bench temperature, and outputs them to the electronic equipment. The vehicle calibration device is used to test and obtain the actual vehicle test temperature of the clutch and output it to the electronic device.
8. A processing device for a clutch thermal model, characterized in that, The device includes: The data acquisition module is used to acquire clutch test parameters, which include: torque parameters, clutch bench test temperature, and clutch actual vehicle test temperature. The first simulation module is used to input the torque parameters into the initial thermal model of the clutch and output the first static simulation temperature. The first parameter adjustment module is used to compare the first static simulation temperature with the clutch bench test temperature, and to perform a first-stage parameter adjustment on the initial thermal model based on the comparison result to obtain the intermediate thermal model of the clutch. The second simulation module is used to input the torque parameters into the intermediate thermal model and output the first dynamic simulation temperature. The second parameter adjustment module is used to compare the first dynamic simulation temperature with the actual vehicle test temperature of the clutch, and to perform a second-stage parameter adjustment on the intermediate thermal model based on the comparison result to obtain the target thermal model of the clutch. The initial thermal model includes a clutch heat generation sub-model, a clutch static heat dissipation sub-model, and a clutch dynamic heat dissipation sub-model; the first simulation module is used to input the torque parameters into the clutch heat generation sub-model to obtain the clutch heat generation power, and the clutch heat generation power is used as the input of the clutch static heat dissipation sub-model and the clutch dynamic heat dissipation sub-model to output the first static simulation temperature.
9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.