AMT clutch life estimation method, device, equipment and storage medium

Abstract

The present invention discloses an AMT clutch life estimation method, device, equipment and storage medium, wherein the method includes the steps of: obtaining a transmission torque characteristic curve formed by a brand new clutch and a completely worn clutch from the starting torque transmission point to the fully closed point; obtaining the current clutch position on the vehicle and the transmission torque of the current clutch in real time; determining the transmission torque corresponding to the brand new clutch and the completely worn clutch respectively according to the current clutch position and the transmission torque characteristic curve; estimating the clutch life according to the transmission torque of the current clutch and the transmission torque of the brand new clutch and the completely worn clutch corresponding to the current clutch position. The present application uses the transmission torque capacity of the clutch to estimate the life of the clutch, avoiding various factors that may cause inaccurate results in stroke measurement, and obtaining better accuracy.

Description

Technical Field

[0001] The present invention relates to the field of clutch technology, and in particular to an AMT clutch life estimation method, device, equipment and storage medium. Background Art

[0002] The existing clutch life estimation generally adopts to install a displacement sensor on the clutch system, and estimates the clutch wear amount according to the change of displacement, so as to obtain the clutch life.

[0003] Estimating clutch wear based on displacement actually measures the displacement of the clutch actuator and converts it into clutch wear. The clearance, efficiency, and error of the actuator lead to inaccurate estimation. The clutch pressure plate also suffers from aging and displacement loss, further increasing the inaccuracy of this estimation method.

[0004] Therefore, how to accurately estimate the life of the clutch is a technical problem that urgently needs to be solved. Summary of the invention

[0005] The main purpose of the present invention is to provide an AMT clutch life estimation method, device, equipment and storage medium, which utilizes the clutch's torque transmission capacity to estimate the clutch life, avoids various factors that may cause inaccurate results in stroke measurement, and obtains better accuracy.

[0006] In a first aspect, the present application provides a method for estimating the life of an AMT clutch, wherein the method comprises the steps of:

[0007] Obtain the torque transmission characteristic curve of a new clutch and a completely worn clutch from the starting torque transmission point to the fully closed point;

[0008] Real-time acquisition of the current clutch position and the transmission torque of the current clutch position on the vehicle;

[0009] According to the current clutch position and the transmission torque characteristic curve, the transmission torque corresponding to the new clutch and the completely worn clutch is determined;

[0010] The clutch life is estimated based on the torque delivered at the current clutch position and the torque delivered by a new clutch and a completely worn clutch at the current clutch position.

[0011] In combination with the first aspect, as an optional implementation, a relative position pi of the current clutch position corresponding to a proportion in the transmission torque characteristic curve is obtained by using a difference method;

[0012] The transmission torque of the new clutch and the transmission torque of the completely worn clutch at the position corresponding to the relative position pi in the transmission torque characteristic curve are determined.

[0013] In combination with the first aspect above, as an optional implementation method, according to the formula: pi=p0+p / (p1-p0), the relative position pi of the current clutch position corresponding to the proportion in the torque transmission characteristic curve is calculated, wherein pi refers to the position of the corresponding proportion obtained by interpolation between p0 and p1, p0 is the point where the clutch starts to transmit torque, p1 is the point where the clutch completely closes the torque transmission, and p is the current clutch position.

[0014] In combination with the first aspect, as an optional implementation, the wear coefficient of the clutch is calculated according to the formula: ki = (tqnew-tqc) / (tqnew-tqold), wherein tqnew is the transmission torque of a brand new clutch corresponding to the current clutch position, tqold is the transmission torque of a completely worn clutch corresponding to the current clutch position, and tqc is the transmission torque of the clutch to be estimated corresponding to the current clutch position;

[0015] Estimate the life of the clutch based on the clutch wear coefficient.

[0016] In combination with the first aspect above, as an optional implementation method, based on the transmission torque characteristic test of a new and completely worn clutch on a test bench, the transmission torque characteristic curve of the new clutch and the completely worn clutch from the starting torque transmission point to the complete closing point is obtained.

[0017] In combination with the first aspect above, as an optional implementation method, the transmission torque of the current clutch position is calculated according to the formula: tqc=|tqe-αe*Ie|, where tqe is the engine torque, αe is the engine angular acceleration, and Ie is the engine moment of inertia.

[0018] In combination with the first aspect, as an optional implementation, whether to calculate the clutch wear coefficient is determined according to the engine torque, the engine water temperature, the clutch slip speed and the air conditioner load;

[0019] When the engine torque is within a set torque range, the engine water temperature is within a set water temperature range, the clutch slip speed is within a set speed range, and the air conditioning load is within a set load range, the clutch wear coefficient is determined and calculated.

[0020] In a second aspect, the present application provides an AMT clutch life estimation device, the device comprising:

[0021] An acquisition module, which is used to acquire a transmission torque characteristic curve of a new clutch and a completely worn clutch from a starting torque transmission point to a completely closed point;

[0022] The acquisition module is also used to acquire the current clutch position and the transmission torque of the current clutch position in real time;

[0023] A determination module, which is used to determine the transmission torque corresponding to a new clutch and a completely worn clutch respectively according to a current clutch position and a transmission torque characteristic curve;

[0024] The estimation module is used for estimating the clutch life according to the transmission torque of the current clutch position and the transmission torque of a new clutch and a completely worn clutch corresponding to the current clutch position.

[0025] In a third aspect, the present application further provides an electronic device, comprising: a processor; a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the method described in any one of the first aspects is implemented.

[0026] In a fourth aspect, the present application further provides a computer-readable storage medium storing computer program instructions, which, when executed by a computer, enables the computer to execute any of the methods described in the first aspect.

[0027] The present application provides a method, device, equipment and storage medium for estimating the life of an AMT clutch, wherein the method includes the steps of: obtaining a transmission torque characteristic curve formed by a brand new clutch and a completely worn clutch from the starting torque transmission point to the fully closed point; obtaining the current clutch position and the transmission torque of the current clutch position in real time; determining the transmission torque corresponding to the brand new clutch and the completely worn clutch respectively according to the current clutch position and the transmission torque characteristic curve; estimating the clutch life according to the transmission torque of the current clutch position and the transmission torque of the brand new clutch and the completely worn clutch corresponding to the current clutch position. The present application uses the transmission torque capacity of the clutch to estimate the life of the clutch, avoiding various factors that may cause inaccurate results in stroke measurement, and obtaining better accuracy.

[0028] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0030] Figure 1 A flow chart of an AMT clutch life estimation method provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram of an AMT clutch life estimation device provided in an embodiment of the present application;

[0032] Figure 3A schematic diagram of a transmission torque characteristic curve provided in an embodiment of the present application;

[0033] Figure 4 A schematic diagram of an electronic device provided in an embodiment of the present application;

[0034] Figure 5 A schematic diagram of a computer-readable program medium provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0036] Furthermore, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. Some of the blocks shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities.

[0037] The embodiments of the present application provide an AMT clutch life estimation method, device, equipment and storage medium, which utilizes the clutch's torque transmission capacity to estimate the clutch life, avoids various factors that may cause inaccurate results in stroke measurement, and obtains better accuracy.

[0038] In order to achieve the above technical effects, the general idea of ​​this application is as follows:

[0039] A method for estimating the life of an AMT clutch, the method comprising the steps of:

[0040] S101: Obtain the torque transmission characteristic curve of a new clutch and a completely worn clutch from the starting torque transmission point to the complete closing point.

[0041] S102: Acquire the current clutch position and the transmission torque of the current clutch position in real time.

[0042] S103: Determine the transmission torques corresponding to the new clutch and the completely worn clutch respectively according to the current clutch position and the transmission torque characteristic curve.

[0043] S104: Estimate the clutch life according to the transmission torque of the current clutch position and the transmission torque of a new clutch and a completely worn clutch corresponding to the current clutch position.

[0044] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0045] Reference Figure 1 , Figure 1 FIG. 1 is a flow chart of a method for estimating the life of an AMT clutch provided by the present invention, as shown in FIG. Figure 1 As shown, the method comprises the steps of:

[0046] Step S101: Obtain the transmission torque characteristic curve of a new clutch and a completely worn clutch from the starting torque transmission point to the complete closing point.

[0047] Specifically, it is first necessary to conduct torque transmission characteristic tests on a brand new and completely worn clutch on a test bench to obtain the torque transmission characteristic curves of the brand new clutch and the completely worn clutch. The horizontal axis is fitted according to the clutch starting torque transmission point p0 and the clutch completely closed point p1 as the value interval, and the vertical axis is the transmitted torque.

[0048] In one embodiment, after obtaining the transmission torque characteristic curves of a brand new clutch and a completely worn clutch from the starting torque transmission point to the fully closed point, it is determined whether the clutch wear coefficient needs to be calculated according to the engine torque, the engine water temperature, the clutch slip speed and the air conditioning load;

[0049] When the engine torque is within a set torque range, the engine water temperature is within a set water temperature range, the clutch slip speed is within a set speed range, and the air conditioning load is within a set load range, it is determined that the clutch wear coefficient needs to be calculated.

[0050] For ease of understanding, let's take an example. When the vehicle starts, if the following conditions are met at the same time, the calculation of the clutch wear coefficient begins: 1. The engine torque is in a certain threshold range. Select the engine's lower torque range. In this range, the clutch torque transmission characteristics and engine torque are more accurate. It can be understood that based on the engine torque, such as an engine with a maximum torque of 450Nm, select the 50-300NM range. In this range, the engine torque and clutch torque transmission are more accurate. 2. The engine water temperature is in a certain threshold range. Select 30-90℃. The engine efficiency is higher in this range. 3. The absolute value of the clutch slip speed is in a certain threshold range. Select 100-600rpm. In this range, the clutch transmission torque is in the torque range of the engine in 1. 4. The air conditioning load is turned off.

[0051] Step S102: Acquire the current clutch position and the transmission torque of the current clutch position in real time.

[0052] Specifically, the current position of the vehicle clutch is read and the transmission torque of the current clutch position is estimated. It can be understood that the transmission torque of the current clutch position is calculated according to the formula: tqc = |tqe-αe*Ie|, where tqe is the engine torque, αe is the engine angular acceleration, and Ie is the engine moment of inertia. It should be noted that the clutch position refers to the value of the clutch travel sensor, which can also be understood as the pedal opening.

[0053] It should be noted that the current clutch position and the transmission torque of the clutch position are obtained for subsequent clutch life estimation.

[0054] Step S103: Determine the transmission torques corresponding to the new clutch and the completely worn clutch respectively according to the current clutch position and the transmission torque characteristic curve.

[0055] Specifically, the difference method is used to obtain the relative position pi of the current clutch position corresponding to the proportion in the transmission torque characteristic curve; the transmission torque of the new clutch and the transmission torque of the completely worn clutch corresponding to the relative position pi in the transmission torque characteristic curve are determined.

[0056] For ease of understanding, an example is given. The current clutch position p is read and converted into a relative position pi with p0 and p1 as the starting and ending points, and the new clutch transmission torque tqnew and the transmission torque tqold of the completely worn clutch at the corresponding position of pi are obtained.

[0057] It can be understood that the relative position pi refers to a position of corresponding proportion obtained by interpolation between p0 and p1, and its calculation method is: pi=p0+p / (p1-p0).

[0058] The current torque transmission capacity tqc of the clutch at pi is between the torque transmission capacity tqnew of a new clutch at a relative position and the torque transmission capacity tqold of a completely worn clutch at a relative position. By calculating ki, the wear coefficient of each point can be estimated by the torque transmission capacity of each point, where each point can be understood as a point of clutch position and clutch torque transmission capacity obtained in each sampling period.

[0059] Step S104: Estimate the clutch life according to the transmission torque of the current clutch position and the transmission torque of a new clutch and a completely worn clutch corresponding to the current clutch position.

[0060] Specifically, the wear coefficient of the clutch is calculated according to the formula: ki = (tqnew-tqc) / (tqnew-tqold), where tqnew is the transmission torque of a new clutch corresponding to the current clutch position, tqold is the transmission torque of a completely worn clutch corresponding to the current clutch position, and tqc is the transmission torque of the clutch to be estimated corresponding to the current clutch position;

[0061] Estimate the life of the clutch based on the clutch wear coefficient.

[0062] It should be noted that estimating the life of the clutch based on the wear coefficient of the clutch can be understood as follows: assuming that the higher the calculated wear coefficient, the shorter the life of the clutch; when the wear coefficient is at an intermediate value, it means that the life of the clutch is normal; and when the wear coefficient is smaller, the life of the clutch is longer.

[0063] For ease of understanding, an example is given. In each sampling cycle (10ms), the clutch transfer torque tqc is estimated and the current clutch position p is read, and the clutch position is converted into a relative position pi with p0 and p1 as the starting and ending points. The new clutch transfer torque tqnew at the position corresponding to pi and the transfer torque tqold of the completely worn clutch are obtained, and then the clutch wear coefficient ki of the cycle is calculated, ki = (tqnew-tqc) / (tqnew-tqold).

[0064] The average clutch wear coefficient ka is calculated every n cycles. The calculation method is to accumulate ki within n cycles and divide it by n: ka = sum(ki) / n, where n can be 10.

[0065] Calculate ka once, count once, record it as N, and after the starting stage, calculate the average clutch wear coefficient kb in this stage: kb = sum(ka) / N, where the starting stage refers to the time from shifting into D gear, releasing the brake, and stepping on the accelerator to the time when the clutch is fully engaged.

[0066] The final clutch wear coefficient k = k0 + kb, where k0 is the current wear coefficient stored in the automatic transmission control unit TCU. Each time the value of k is updated, it must be limited to k0 ± 1. In the starting phase, at least one ka is generated before kb is calculated and the final clutch wear coefficient k is updated. When any of the calculation conditions of the clutch wear coefficient is not met, the calculation of the clutch wear coefficient will be stopped until the conditions are met again and the calculation is started or the calculation is terminated after exiting the starting phase.

[0067] Reference Figure 2 , Figure 2 FIG. 1 is a schematic diagram of an AMT clutch life estimation device provided by the present invention, as shown in FIG. Figure 2As shown, the device comprises:

[0068] The acquisition module 201 is used to acquire the transmission torque characteristic curve of a brand new clutch and a completely worn clutch from the starting torque transmission point to the complete closing point.

[0069] The acquisition module 201 is also used to obtain the current clutch position and the transmission torque of the current clutch position in real time.

[0070] The determination module 202 is used to determine the transmission torques corresponding to the new clutch and the completely worn clutch respectively according to the current clutch position and the transmission torque characteristic curve.

[0071] The estimation module 203 is used to estimate the clutch life according to the transmission torque of the current clutch position and the transmission torque of a new clutch and a completely worn clutch corresponding to the current clutch position.

[0072] Furthermore, in a possible implementation manner, the determination module is further configured to obtain a relative position pi of the current clutch position corresponding to a proportion in the transmission torque characteristic curve by using a difference method;

[0073] The transmission torque of the new clutch and the transmission torque of the completely worn clutch at the position corresponding to the relative position pi in the transmission torque characteristic curve are determined.

[0074] Furthermore, in a possible implementation, the estimation module is also used to calculate the relative position pi of the current clutch position in the torque transmission characteristic curve according to the formula: pi=p0+p / (p1-p0), wherein pi refers to the position of the corresponding proportion obtained by interpolation between p0 and p1, p0 is the clutch starting torque transmission point, p1 is the clutch completely closing torque transmission point, and p is the current clutch position.

[0075] Further, in a possible implementation manner, the estimation module is further used to calculate the wear coefficient of the clutch according to the formula: ki = (tqnew-tqc) / (tqnew-tqold), wherein tqnew is the transmission torque of a new clutch corresponding to the current clutch position, tqold is the transmission torque of a completely worn clutch corresponding to the current clutch position, and tqc is the transmission torque of the clutch to be estimated corresponding to the current clutch position;

[0076] Estimate the life of the clutch based on the clutch wear coefficient.

[0077] Furthermore, in a possible implementation, the acquisition module is also used to obtain the transmission torque characteristic curve of the new clutch and the completely worn clutch from the starting torque transmission point to the fully closed point based on the transmission torque characteristic test of the new and completely worn clutches performed on the test bench.

[0078] Furthermore, in a possible implementation, the estimation module is also used to calculate the transmission torque of the current clutch position according to the formula: tqc=|tqe-αe*Ie|, where tqe is the engine torque, αe is the engine angular acceleration, and Ie is the engine moment of inertia.

[0079] Furthermore, in a possible implementation manner, a judgment module is further included, which is used to judge whether to calculate the wear coefficient of the clutch according to the engine torque, the engine water temperature, the clutch slip speed and the air conditioner load;

[0080] When the engine torque is within a set torque range, the engine water temperature is within a set water temperature range, the clutch slip speed is within a set speed range, and the air conditioning load is within a set load range, it is determined that the clutch wear coefficient needs to be calculated.

[0081] Reference Figure 3 , Figure 3 FIG. 1 is a schematic diagram of a transmission torque characteristic curve provided by the present invention, such as Figure 3 As shown:

[0082] The curve diagram includes a new clutch torque transmission characteristic curve and a completely worn clutch torque transmission characteristic curve. The horizontal axis is fitted according to the starting torque transmission point p0 and the fully closed point p1 as the value interval, and the vertical axis is the transmission torque.

[0083] It can be understood that the clutch transfer torque tqc is estimated and the current clutch position p is read, and the clutch position is converted into a relative position pi with p0 and p1 as the starting and end points, and the new clutch transfer torque tqnew at the corresponding position pi and the transfer torque tqold of the completely worn clutch are obtained, and then the clutch wear coefficient is calculated. It can be understood that the transfer torques corresponding to the new clutch and the completely worn clutch at the same clutch position (pi point) are determined.

[0084] It can be understood that the torque transmission characteristic curves of a new clutch and a completely worn clutch are obtained, wherein the clutch torque transmission start point is recorded as p0, and the clutch fully closed point is recorded as p1, and the torque transmission characteristic curves of the two clutches are obtained.

[0085] The current clutch's torque transmission capacity tqc at pi is between the brand new clutch's torque transmission capacity tqnew and the completely worn clutch's torque transmission capacity tqold. By calculating ki, the wear coefficient of each point can be estimated by the torque transmission capacity of each point. It can be understood that tqc is the transmission torque corresponding to the pi position, and the pi position is obtained by converting the current clutch position.

[0086] Refer to the following Figure 4An electronic device 400 according to this embodiment of the present invention will be described. Figure 4 The electronic device 400 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0087] like Figure 4 As shown, the electronic device 400 is in the form of a general computing device. The components of the electronic device 400 may include but are not limited to: at least one processing unit 410, at least one storage unit 420, and a bus 430 connecting different system components (including the storage unit 420 and the processing unit 410).

[0088] The storage unit stores program codes, which can be executed by the processing unit 410, so that the processing unit 410 executes the steps according to various exemplary embodiments of the present invention described in the above “Embodiment Method” section of this specification.

[0089] The storage unit 420 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 421 and / or a cache memory unit 422 , and may further include a read-only memory unit (ROM) 423 .

[0090] The storage unit 420 may also include a program / utility 424 having a set (at least one) of program modules 425, such program modules 425 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0091] Bus 430 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0092] The electronic device 400 may also communicate with one or more external devices (e.g., keyboards, pointing devices, Bluetooth devices, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 400, and / or communicate with any device that enables the electronic device 400 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface 450. Furthermore, the electronic device 400 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter 460. As shown, the network adapter 460 communicates with other modules of the electronic device 400 via a bus 430. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0093] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0094] According to the solution of the present disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the above method of the present specification is stored. In some possible implementations, various aspects of the present invention can also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps according to various exemplary implementations of the present invention described in the above "Exemplary Method" section of the present specification.

[0095] refer to Figure 5 As shown, a program product 500 for implementing the above method according to an embodiment of the present invention is described, which can adopt a portable compact disk read-only memory (CD-ROM) and include program code, and can be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto. In this document, a readable storage medium can be any tangible medium containing or storing a program, which can be used by or in combination with an instruction execution system, an apparatus or a device.

[0096] The program product may use any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0097] Computer readable signal media may include data signals propagated in baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Readable signal media may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0098] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0099] Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., through the Internet using an Internet service provider).

[0100] In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to an exemplary embodiment of the present invention, and are not intended to be limiting. It is easy to understand that the processes shown in the above-mentioned figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in multiple modules.

[0101] In summary, the present application provides an AMT clutch life estimation method, device, equipment and storage medium, wherein the method includes the steps of: obtaining a transmission torque characteristic curve formed by a new clutch and a completely worn clutch from the starting torque transmission point to the fully closed point; obtaining the current clutch position and the transmission torque of the current clutch position in real time; determining the transmission torque corresponding to the new clutch and the completely worn clutch respectively according to the current clutch position and the transmission torque characteristic curve; estimating the clutch life according to the transmission torque of the current clutch position and the transmission torque of the new clutch and the completely worn clutch corresponding to the current clutch position. The present application uses the transmission torque capacity of the clutch to estimate the life of the clutch, avoiding various factors that may cause inaccurate results in stroke measurement, and obtaining better accuracy.

[0102] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

[0103] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the process in the flowchart. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

Claims

1. A method for estimating the life of an AMT clutch, characterized in that: include: Obtain the torque transmission characteristic curve of a new clutch and a completely worn clutch from the starting torque transmission point to the fully closed point; Real-time acquisition of the current clutch position and the transmission torque of the current clutch position on the vehicle; According to the current clutch position and the transmission torque characteristic curve, the transmission torque corresponding to the new clutch and the completely worn clutch is determined; specifically, the relative position pi of the current clutch position corresponding to the transmission torque characteristic curve is obtained by using an interpolation method; Determine the transmission torque of the new clutch and the transmission torque of the completely worn clutch at the corresponding position of the relative position pi in the transmission torque characteristic curve; According to the formula: pi=p0+p / (p1-p0), the relative position pi of the current clutch position corresponding to the ratio in the transmission torque characteristic curve is calculated, wherein pi refers to the position of the corresponding ratio obtained by interpolation between p0 and p1, p0 is the clutch torque transmission start point, p1 is the clutch torque transmission point that is completely closed, and p is the current clutch position; The clutch life is estimated according to the transmission torque of the current clutch position and the transmission torque of the new clutch and the completely worn clutch corresponding to the current clutch position; specifically, the wear coefficient of the clutch is calculated according to the formula: ki = (tqnew-tqc) / (tqnew-tqold), wherein tqnew is the transmission torque of the new clutch corresponding to the current clutch position, tqold is the transmission torque of the completely worn clutch corresponding to the current clutch position, and tqc is the transmission torque of the clutch to be estimated corresponding to the current clutch position; Estimate the life of the clutch based on the clutch wear coefficient.

2. The method according to claim 1, characterized in that The method of obtaining the transmission torque characteristic curve of the new clutch and the completely worn clutch from the starting torque transmission point to the complete closing point includes: Based on the transmission torque characteristic test of the new and completely worn clutches on the test bench, the transmission torque characteristic curves of the new clutch and the completely worn clutch from the starting torque transmission point to the complete closing point are obtained.

3. The method according to claim 1, characterized in that include: The transmission torque of the current clutch position is calculated according to the formula: tqc=|tqe-αe*Ie|, where tqe is the engine torque, αe is the engine angular acceleration, and Ie is the engine moment of inertia.

4. The method according to claim 1, characterized in that: After obtaining the transmission torque characteristic curves of the new clutch and the completely worn clutch from the starting torque transmission point to the complete closing point, the method includes: Determine whether to calculate the clutch wear coefficient based on engine torque, engine water temperature, clutch slip speed and air conditioning load; When the engine torque is within a set torque range, the engine water temperature is within a set water temperature range, the clutch slip speed is within a set speed range, and the air conditioning load is within a set load range, the clutch wear coefficient is determined and calculated.

5. An AMT clutch life estimation device, characterized in that: include: An acquisition module, which is used to acquire a transmission torque characteristic curve of a new clutch and a completely worn clutch from a starting torque transmission point to a completely closed point; The acquisition module is also used to acquire the current clutch position and the transmission torque of the current clutch position in real time; A determination module, which is used to determine the transmission torque corresponding to a new clutch and a completely worn clutch respectively according to a current clutch position and a transmission torque characteristic curve; an estimation module for estimating the clutch life according to the transmission torque of the current clutch position and the transmission torque of a new clutch and a completely worn clutch corresponding to the current clutch position; The determination module is further used to obtain the relative position pi of the current clutch position corresponding to the proportion in the transmission torque characteristic curve by using an interpolation method; Determine the transmission torque of the new clutch and the transmission torque of the completely worn clutch at the corresponding position of the relative position pi in the transmission torque characteristic curve; The estimation module is further used to calculate the relative position pi of the current clutch position in the transmission torque characteristic curve according to the formula: pi=p0+p / (p1-p0), wherein pi refers to the position of the corresponding proportion obtained by interpolation between p0 and p1, p0 is the clutch starting torque transmission point, p1 is the clutch completely closing torque transmission point, and p is the current clutch position; The estimation module is further used to calculate the wear coefficient of the clutch according to the formula: ki = (tqnew-tqc) / (tqnew-tqold), where tqnew is the transmission torque of a new clutch corresponding to the current clutch position, tqold is the transmission torque of a completely worn clutch corresponding to the current clutch position, and tqc is the transmission torque of the clutch to be estimated corresponding to the current clutch position; Estimate the life of the clutch based on the clutch wear coefficient.

6. An electronic device, characterized in that: The electronic device comprises: processor; A memory having computer-readable instructions stored thereon, wherein when the computer-readable instructions are executed by the processor, the method according to any one of claims 1 to 4 is implemented.

7. A computer-readable storage medium, characterized in that: The computer program instructions are stored therein, and when the computer program instructions are executed by a computer, the computer is caused to execute the method according to any one of claims 1 to 4.

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