Clutch friction plate residual life prediction method, device, equipment and medium

Abstract

The invention relates to a clutch friction plate residual life prediction method, device and equipment and a medium, and belongs to the technical field of clutch friction plate detection.The method comprises the steps that historical abrasion data and vehicle information can be obtained, and displacement information of a clutch is obtained according to the vehicle information; then, according to the historical wear data, setting a function relationship between the residual life and the wear loss of the clutch friction plate; according to the displacement information, the abrasion loss of the clutch friction plate can be obtained; then the abrasion loss can be calculated according to the function relation, and the remaining life value is obtained; according to the method, the abrasion loss is predicted through the displacement information of the clutch, so that conversion through a lever ratio is not needed, and the abrasion loss conversion precision of the clutch friction plate is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of clutch friction plate detection, and in particular to a clutch friction plate remaining life prediction method, device, equipment and medium. Background Art

[0002] The clutch transmits engine torque and can temporarily cut off power to ensure gear shifting. The working environment of the friction plate is complex, requiring good torque bearing capacity and sufficient wear resistance, temperature resistance and pressure resistance. As a consumable part, the clutch friction plate needs to be replaced according to regulations. Its service life is related to road conditions, driver operation, etc. in addition to its own design factors such as material, structure, and torque transmission. When the clutch friction plate reaches the end of its life, it will cause slippage, causing the clutch to lose the function of transmitting torque and interrupting power, which will then lead to safety problems such as vehicle power loss or inability to shift gears. Therefore, it is necessary to understand the wear of the clutch friction plate through some means.

[0003] The current practice is to add a mechanical wear indicator rod to the piston rod of the clutch booster oil cylinder, convert the displacement caused by the wear of the clutch wear plate into the displacement of the booster oil cylinder piston rod through the lever ratio, measure the displacement of the piston rod through a displacement or force sensor, and when the wear reaches the set warning value, warn the driver through the electronic circuit in the form of sound and light. However, the current warning method has certain shortcomings, mainly manifested in: the wear of the friction plate is converted through the lever ratio composed of mechanical structures such as the release fork and the booster piston rod. The lever ratio is affected by the installation posture of the parts, wear durability, hydraulic oil pressure fluctuations, etc., and there is a problem of low accuracy in the conversion of the wear of the friction plate.

[0004] Therefore, it is urgent to propose a method, device, equipment and medium for predicting the remaining life of a clutch friction plate to solve the problem of low friction plate wear measurement accuracy in the prior art. Summary of the invention

[0005] In view of this, it is necessary to provide a method, device, equipment and medium for predicting the remaining life of a clutch friction plate to solve the problem of low accuracy in measuring the wear amount of the clutch friction plate through a mechanical lever structure in the existing technical solution.

[0006] In order to solve the above problems, the present invention provides a method for predicting the remaining service life of a clutch friction plate, comprising: Acquire historical wear data and vehicle information, and obtain clutch displacement information based on the vehicle information; According to the historical wear data, a functional relationship between the remaining life of the clutch friction plate and the wear amount is set; According to the displacement information, the wear amount of the clutch friction plate is obtained; The wear amount is calculated according to the functional relationship to obtain a remaining life value.

[0007] In a possible implementation, the vehicle information includes the vehicle speed and the engine state; and the clutch displacement information is obtained according to the vehicle information, including: Obtaining an analysis result according to the vehicle speed and the engine state; Determining whether the clutch is in a state of being engaged and not transmitting torque according to the analysis result; If so, when the sensor receives the pulse signal, the wear state of the clutch is measured according to the pulse signal to obtain displacement information.

[0008] In a possible implementation, when the sensor receives a pulse signal, the wear state of the clutch is measured according to the pulse signal to obtain displacement information, including: When the sensor receives the pulse signal, the current position of the release bearing is recorded; Displacement information is obtained according to the current position and the initial position of the release bearing.

[0009] In a possible implementation, obtaining the analysis result according to the vehicle speed and the engine state includes: Determine whether the engine state is switched from the on state to the off state, and whether the vehicle speed is a preset speed; If so, it is determined that the analysis result is in a state of being in contact with no torque being transmitted.

[0010] In a possible implementation, the functional relationship includes a correspondence between the wear amount and the wear duration, and also includes a correspondence between the wear duration and the remaining life; the calculation of the wear amount according to the functional relationship to obtain the remaining life value includes: Determining the wear duration according to the wear amount; The wear time is calculated according to the functional relationship to obtain a remaining life value.

[0011] In a possible implementation, the method further includes: Displaying the remaining life value on a dashboard, and determining whether the remaining life value is greater than a preset life value; If so, an alarm message is output.

[0012] In a possible implementation manner, the sensor is located on the release bearing.

[0013] On the other hand, the present invention also provides a clutch friction plate remaining life prediction device, comprising: A data acquisition module, used to acquire historical wear data and vehicle information, and obtain clutch displacement information based on the vehicle information; A function determination module, used for setting a functional relationship between the remaining life and the wear amount of the clutch friction plate according to the historical wear data; A wear amount calculation module, used for obtaining the wear amount of the clutch friction plate according to the displacement information; The life value prediction module is used to calculate the wear amount according to the functional relationship to obtain the remaining life value.

[0014] On the other hand, an embodiment of the present invention discloses an electronic device, comprising: a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program, when executed by the processor, implements the various steps of the above-mentioned clutch friction plate remaining life prediction method embodiment.

[0015] On the other hand, an embodiment of the present invention discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the various steps of the above-mentioned clutch friction plate remaining life prediction method embodiment are implemented.

[0016] The beneficial effects of the present invention are as follows: historical wear data and vehicle information can be obtained, and based on the vehicle information, the displacement information of the clutch can be obtained; then, based on the historical wear data, a functional relationship between the remaining life of the clutch friction plate and the wear amount can be set; based on the displacement information, the wear amount of the clutch friction plate can be obtained; then, the wear amount can be calculated based on the functional relationship to obtain the remaining life value; the present invention predicts the wear amount through the displacement information of the clutch, thereby eliminating the need for conversion through a lever ratio, thereby improving the conversion accuracy of the wear amount of the clutch friction plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic flow chart of an embodiment of a method for predicting the remaining service life of a clutch friction plate provided by the present invention; Figure 2 For the present invention Figure 1 A schematic flow chart of an embodiment of step S101; Figure 3 A coordinate schematic diagram of an embodiment of a wear amount-remaining life curve diagram provided by the present invention; Figure 4 A schematic diagram of the structure of an embodiment of a clutch friction plate remaining life prediction device provided by the present invention; Figure 5 A schematic structural diagram of an embodiment of an electronic device provided by the present invention. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0019] like Figure 1 As shown, a specific embodiment of the present invention discloses a method for predicting the remaining life of a clutch friction plate, comprising: S101, acquiring historical wear data and vehicle information, and obtaining clutch displacement information according to the vehicle information; S102, setting a functional relationship between the remaining life and the wear amount of the clutch friction plate according to the historical wear data; S103, obtaining the wear amount of the clutch friction plate according to the displacement information; S104, calculating the wear amount according to the functional relationship to obtain the remaining life value.

[0020] It should be understood that the historical wear data obtained in step S101 may be obtained by performing multiple tests in a laboratory, or by calling historically stored historical wear data from a storage medium.

[0021] In a specific embodiment of the present invention, a wiring harness through hole is provided on the clutch housing, and a high-precision displacement sensor installed on the release bearing is connected to the controller module through a wiring harness, and the wiring harness needs to maintain a certain redundant length, which is not less than the separation stroke of the release bearing, and the sensor and the controller module are physically and electrically connected. Historical wear data and vehicle information can be obtained, and the displacement information of the clutch can be obtained based on the vehicle information, wherein the historical wear data can be the wear amount and wear time data under specific torque and clamping force conditions measured experimentally, and then the historical wear data can be processed, for example, multiple calculations and analyses can be performed, and the functional relationship between the remaining life and wear amount of the clutch friction plate can be set according to the data situation, and the wear amount of the clutch friction plate can also be obtained based on the displacement information; then the wear amount can be calculated based on the functional relationship to obtain the remaining life value.

[0022] Compared with the prior art, the present embodiment provides a method for obtaining historical wear data and vehicle information, and obtaining the displacement information of the clutch based on the vehicle information; then, according to the historical wear data, a functional relationship between the remaining life of the clutch friction plate and the wear amount is set; according to the displacement information, the wear amount of the clutch friction plate can be obtained; then, the wear amount can be calculated according to the functional relationship to obtain the remaining life value; the present invention predicts the wear amount through the displacement information of the clutch, thereby eliminating the need for conversion through a lever ratio, thereby improving the conversion accuracy of the wear amount of the clutch friction plate.

[0023] In some embodiments of the present invention, the vehicle information includes the vehicle speed and engine status; Figure 2 As shown, step S101 includes: S201, obtaining analysis results according to the vehicle speed and engine status; S202, judging whether the clutch is in a state of not transmitting torque according to the analysis result; S203: If yes, when the sensor receives the pulse signal, the wear state of the clutch is measured according to the pulse signal to obtain displacement information.

[0024] In a specific embodiment of the present invention, the vehicle information may include the vehicle speed and engine status on the vehicle bus, and then an analysis result can be obtained for the vehicle speed and engine status to determine whether the analysis result shows that the clutch is in a state of engagement and not transmitting torque. If so, a pulse signal is sent to the sensor through the controller, and the wear state of the clutch is measured based on the pulse signal, thereby obtaining displacement information.

[0025] In some embodiments of the present invention, S201 includes: Determine whether the engine state is switched from the on state to the off state, and whether the vehicle speed is the preset speed; If so, the analysis result is determined to be in a state of conforming to the non-transmitted torque.

[0026] In a specific embodiment of the present invention, the engine state and the vehicle speed can be judged to determine whether the engine state is switched from the on state to the off state, and whether the vehicle speed is the preset speed; wherein the preset speed can be 0, that is, when the engine state signal is received to switch from ON to OFF, and the vehicle speed Vehicle Speed ​​is 0, it indicates that the clutch is in a state of engagement and no torque is transmitted, the controller module can transmit a pulse signal to the sensor, and the sensor can record the current position of the release bearing.

[0027] In some embodiments of the present invention, step S203 includes: When the sensor receives the pulse signal, it records the current position of the release bearing; The displacement information is obtained according to the current position and the initial position of the release bearing.

[0028] In a specific embodiment of the present invention, the initial position of the release bearing can be determined. After the sensor receives the pulse signal, the current position of the release bearing can be recorded, and then the change of the current position of the release bearing relative to the initial position can be calculated to obtain displacement information.

[0029] Furthermore, according to the historical wear data, the specific process of setting the functional relationship between the remaining life of the clutch friction plate and the wear amount can be: the sensor and the controller module interact bidirectionally, and while receiving the vehicle and engine status parameters, they also send the position signal of the release bearing. When receiving the engine status signal from ON to OFF, and the vehicle speed Vehicle Speed ​​is 0, the controller module sends a pulse signal to the displacement sensor, the sensor records the position of the release bearing, and sends the position signal back to the controller module, and the position of the i-th measurement is recorded as S i The controller stores the measured data including the initial position S0, which is converted into the wear amount of the friction plate through calculation, recorded as Δ i , as shown in Table 1 below: Table 1. Measurement data and wear amount

[0030] The controller module stores the relationship function between the wear amount and the remaining life of the clutch friction plate under a specific torque and a specific clamping force. The relationship function is calculated by experiment and recording the wear amount and wear time. The remaining life of the friction plate is defined as the percentage of the working time of the remaining thickness to the total working time. The detailed calculation method is as follows, where n is the wear thickness of the clutch friction plate when it fails, and the remaining life calculation is shown in Table 2: Table 2. Remaining life calculation

[0031] From the above transformation, we can get Figure 3 The wear amount-remaining life curve shown in the figure is Figure 3 The x-axis is the amount of wear, and the y-axis is the remaining life. When the wear starts, the remaining life decreases slowly with the change in wear. When the friction plate is worn to a certain extent, the remaining life decreases rapidly with the change in wear.

[0032] Further, as shown in the functional relationship in Table 2, after the displacement information is obtained, the displacement information can be determined as the wear amount of the clutch friction plate.

[0033] In some embodiments of the present invention, the functional relationship includes a corresponding relationship between the wear amount and the wear time, and also includes a corresponding relationship between the wear time and the remaining life; step S104 includes: Determine the wear duration based on the amount of wear; The wear time is calculated according to the functional relationship to obtain the remaining life value.

[0034] In a specific embodiment of the present invention, the wear time may include the time taken to wear each unit thickness determined in the test, such as the time taken to wear the first unit thickness in Table 2.t 1. Time taken to wear the second unit thickness t 2, until the wear i Time per unit thickness t i , the remaining life corresponding to each time can also be calculated based on the test data. For example, when t 1, you can t When using the data in Table 1 and Table 2, the wear time can be determined based on the corresponding relationship between the wear amount and the wear time. For example, when the wear amount is △1, the wear time is determined to be t 1. When the wear amount is △2, the wear time is determined to be t 2. When the wear amount is between △1 and △2, it can be determined by calculating the wear amount residual or fitting. t x , we can also determine the corresponding functional relationship formula based on the corresponding relationship between the wear time and the remaining life, for example, when t x for t 1 and t 2, confirm t x The functional relationship formula is shown in formula (1): (1) The remaining life value is calculated by the functional relationship formula of formula (1).

[0035] In some embodiments of the present invention, the method further comprises: Display the remaining life value on the dashboard and determine whether the remaining life value is greater than the preset life value; If so, an alarm message is output.

[0036] In a specific embodiment of the present invention, after calculating the remaining life value of the clutch friction plate, the remaining life value can be displayed on the dashboard, and the remaining life value can also be judged to determine whether the remaining life value is greater than a preset life value, wherein the preset life value can be set according to actual conditions, and the embodiment of the present invention is not limited here. If yes, an alarm message can be output on the dashboard, and if not, the remaining life value is displayed on the dashboard.

[0037] The electronic sensor in the embodiment of the present invention directly reads the wear amount of the friction plate, rather than transmitting the measurement through a mechanical lever, and has higher precision and accuracy; by communicating with the dashboard module, the wear amount and remaining life are displayed on the dashboard in a visual manner, so that the life status of the friction plate can be understood at any time.

[0038] In order to better implement the clutch friction plate remaining life prediction method in the embodiment of the present invention, based on the clutch friction plate remaining life prediction method, the embodiment of the present invention also provides a clutch friction plate remaining life prediction device, such as Figure 4 As shown, the clutch friction plate remaining life prediction device 400 includes: The data acquisition module 401 is used to acquire historical wear data and vehicle information, and obtain clutch displacement information based on the vehicle information; Function determination module 402, used to set the functional relationship between the remaining life of the clutch friction plate and the wear amount according to the historical wear data; The wear amount calculation module 403 is used to obtain the wear amount of the clutch friction plate according to the displacement information; The life value prediction module 404 is used to calculate the wear amount according to the functional relationship to obtain the remaining life value.

[0039] The clutch friction plate remaining life prediction device 400 provided in the above embodiment can implement the technical solution described in the above clutch friction plate remaining life prediction method embodiment. The specific implementation principles of the above modules or units can refer to the corresponding contents in the above clutch friction plate remaining life prediction method embodiment, which will not be repeated here.

[0040] like Figure 5 As shown, the present invention also provides an electronic device 500. The electronic device 500 includes a processor 501, a memory 502 and a display 503. Figure 5 Only some components of the electronic device 500 are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0041] In some embodiments, the memory 502 may be an internal storage unit of the electronic device 500, such as a hard disk or memory of the electronic device 500. In other embodiments, the memory 502 may also be an external storage device of the electronic device 500, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 500.

[0042] Furthermore, the memory 502 may include both an internal storage unit of the electronic device 500 and an external storage device. The memory 502 is used to store application software installed in the electronic device 500 and various data.

[0043] In some embodiments, the processor 501 may be a central processing unit (CPU), a microprocessor or other data processing chip, used to run program codes or process data stored in the memory 502, such as the clutch friction plate remaining life prediction method of the present invention.

[0044] In some embodiments, the display 503 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. The display 503 is used to display information of the electronic device 500 and to display a visual user interface. The components 501-503 of the electronic device 500 communicate with each other through a system bus.

[0045] In some embodiments of the present invention, when the processor 501 executes the clutch friction plate remaining life prediction program in the memory 502, the following steps may be implemented: Obtain historical wear data and vehicle information, and obtain clutch displacement information based on the vehicle information; According to the historical wear data, the functional relationship between the remaining life of the clutch friction plate and the wear amount is set; According to the displacement information, the wear amount of the clutch friction plate is obtained; The wear amount is calculated according to the functional relationship to obtain the remaining life value.

[0046] It should be understood that: when the processor 501 executes the clutch friction plate remaining life prediction program in the memory 502, in addition to the above functions, other functions can also be implemented. For details, please refer to the description of the corresponding method embodiment above.

[0047] Furthermore, the embodiment of the present invention does not specifically limit the type of the electronic device 500 mentioned, and the electronic device 500 may be a portable electronic device such as a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, etc. Exemplary embodiments of portable electronic devices include but are not limited to portable electronic devices equipped with IOS, Android, Microsoft or other operating systems. The above-mentioned portable electronic devices may also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, the electronic device 500 may not be a portable electronic device, but a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0048] Accordingly, an embodiment of the present application also provides a computer-readable storage medium, which is used to store computer-readable programs or instructions. When the program or instructions are executed by a processor, the steps or functions of the clutch friction plate remaining life prediction method provided in the above-mentioned method embodiments can be implemented.

[0049] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware (such as a processor, a controller, etc.) through a computer program, and the computer program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0050] The above is a detailed introduction to the clutch friction plate remaining life prediction method, device, equipment and medium provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A method for predicting the remaining life of a clutch friction plate, characterized in that: include: Acquire historical wear data and vehicle information, and obtain clutch displacement information based on the vehicle information; According to the historical wear data, a functional relationship between the remaining life of the clutch friction plate and the wear amount is set; According to the displacement information, the wear amount of the clutch friction plate is obtained; The wear amount is calculated according to the functional relationship to obtain a remaining life value.

2. The method for predicting the remaining service life of a clutch friction plate according to claim 1, characterized in that: The vehicle information includes the vehicle speed and the engine status; the clutch displacement information is obtained according to the vehicle information, including: Obtaining an analysis result according to the vehicle speed and the engine state; Determining whether the clutch is in a state of being engaged and not transmitting torque according to the analysis result; If so, when the sensor receives the pulse signal, the wear state of the clutch is measured according to the pulse signal to obtain displacement information.

3. The method for predicting the remaining service life of a clutch friction plate according to claim 2, characterized in that: When the sensor receives the pulse signal, the wear state of the clutch is measured according to the pulse signal to obtain displacement information, including: When the sensor receives the pulse signal, the current position of the release bearing is recorded; Displacement information is obtained according to the current position and the initial position of the release bearing.

4. The method for predicting the remaining service life of a clutch friction plate according to claim 1, characterized in that: The obtaining of analysis results according to the vehicle speed and the engine state includes: Determine whether the engine state is switched from the on state to the off state, and whether the vehicle speed is a preset speed; If so, it is determined that the analysis result is in a state of being in contact with no torque being transmitted.

5. The method for predicting the remaining service life of a clutch friction plate according to claim 1, characterized in that: The functional relationship includes a corresponding relationship between the wear amount and the wear duration, and also includes a corresponding relationship between the wear duration and the remaining life; the calculation of the wear amount according to the functional relationship to obtain the remaining life value includes: Determining the wear duration according to the wear amount; The wear time is calculated according to the functional relationship to obtain a remaining life value.

6. The method for predicting the remaining service life of a clutch friction plate according to claim 1, characterized in that: The method further comprises: Displaying the remaining life value on a dashboard, and determining whether the remaining life value is greater than a preset life value; If so, an alarm message is output.

7. The method for predicting the remaining service life of a clutch friction plate according to claim 3, characterized in that: The sensor is located on the release bearing.

8. A clutch friction plate remaining life prediction device, characterized in that: include: A data acquisition module, used to acquire historical wear data and vehicle information, and obtain clutch displacement information based on the vehicle information; A function determination module, used for setting a functional relationship between the remaining life and the wear amount of the clutch friction plate according to the historical wear data; A wear amount calculation module, used for obtaining the wear amount of the clutch friction plate according to the displacement information; The life value prediction module is used to calculate the wear amount according to the functional relationship to obtain the remaining life value.

9. An electronic device, characterized in that: include: A processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the steps of the method for predicting the remaining life of a clutch friction plate as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for predicting the remaining life of a clutch friction plate as described in any one of claims 1-7 are implemented.

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