A method, device and electronic equipment for determining driven disc wear fault

Abstract

The present application relates to the field of vehicle control technology, and discloses a method, device and electronic device for determining a driven disc wear fault, the method comprising: determining the current pressure plate displacement corresponding to the current separation stroke of the target clutch based on a first correspondence between a preset separation stroke and a pressure plate displacement; comparing the current pressure plate displacement with the critical displacement of the pressure plate of the target clutch; the critical displacement is determined based on the initial displacement of the pressure plate and the preset wear amount of the target clutch; and determining whether a wear fault occurs to the driven disc of the target clutch based on the comparison result. This embodiment can accurately determine the current pressure plate displacement corresponding to the current separation stroke of the clutch according to the above correspondence, and by comparing the current pressure plate displacement with the critical displacement of the pressure plate, the driven disc wear fault can be determined in a timely and accurate manner.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a method, device and electronic equipment for determining a driven disc wear fault. Background Art

[0002] At present, dry friction clutch is widely used in automotive powertrain, which mainly includes pressure plate, driven plate and release bearing etc. Dry friction clutch provides clamping force through pressure plate, presses driven plate between flywheel and pressure plate, and transmits torque through friction force.

[0003] During the frequent clamping and separation process, the friction plate of the driven disc will wear, resulting in reduced clamping force during operation. When the torque that can be transmitted by the clamping force is less than the required torque, the powertrain will not work properly. If the wear of the driven disc is not determined in time, it will affect the powertrain and cause safety accidents.

[0004] In summary, there is an urgent need for a method that can promptly and accurately determine the wear failure of the driven disc. Summary of the invention

[0005] The present application provides a method, device and electronic equipment for determining a driven disc wear fault, which are used to timely and accurately determine a driven disc wear fault.

[0006] In a first aspect, an embodiment of the present application provides a method for determining a driven disc wear fault, the method comprising:

[0007] Determining a current pressure plate displacement corresponding to a current separation stroke of the target clutch based on a preset first correspondence relationship between the separation stroke and the pressure plate displacement;

[0008] comparing the current pressure plate displacement with a critical displacement of the pressure plate of the target clutch; the critical displacement is determined based on an initial displacement of the pressure plate and a preset wear amount of the target clutch;

[0009] Based on the comparison result, it is determined whether a wear failure occurs on the driven disc of the target clutch.

[0010] In the above scheme, since the thinner the friction plate of the driven disc is, the more serious the wear is, and the smaller the displacement of the pressure plate is when compressed, when the pressure plate displacement is reduced to the critical displacement of the pressure plate of the clutch, the torque required by the clutch cannot be transmitted, affecting the powertrain; however, the pressure plate displacement is difficult to measure directly. By presetting the corresponding relationship between the separation stroke and the pressure plate displacement, the current pressure plate displacement corresponding to the current separation stroke of the clutch can be accurately determined according to the corresponding relationship, and by comparing the current pressure plate displacement with the critical displacement of the pressure plate, the driven disc wear failure can be determined in a timely and accurate manner.

[0011] In some optional implementations, the first corresponding relationship is determined in the following manner:

[0012] Determining a second corresponding relationship between the clamping force generated by the clamping and the displacement of the pressure plate under different wear states of the driven plate of the sample clutch; and

[0013] Determine a third corresponding relationship between the separation force generated by separation and the separation stroke under different wear states of the driven plate of the sample clutch;

[0014] The first corresponding relationship is determined based on the second corresponding relationship, the third corresponding relationship, and the association between the pressing force and the separation force.

[0015] In the above scheme, the second corresponding relationship is the corresponding relationship between the clamping force and the pressure plate displacement, and the third corresponding relationship is the corresponding relationship between the separation force and the separation stroke. There is a correlation between the clamping force and the separation force. Therefore, based on the above second corresponding relationship, the third corresponding relationship, and the correlation between the clamping force and the separation force, the first corresponding relationship between the pressure plate displacement and the separation stroke can be accurately determined.

[0016] In some optional implementations, the initial displacement is determined by:

[0017] Based on the second corresponding relationship, the first pressure plate displacement corresponding to the first target clamping force is determined as the initial displacement; wherein the first target clamping force is a preset clamping force in the clamping force in the decreasing interval in the second corresponding relationship, the preset clamping force is the clamping force required to provide a preset torque, and the decreasing interval is an interval in which the clamping force decreases with the increase of the pressure plate displacement in the second corresponding relationship.

[0018] The above scheme determines the preset clamping force (first target clamping force) from the interval in which the clamping force decreases with the increase of the pressure plate displacement in the second corresponding relationship by presetting the preset clamping force required to transmit the preset torque. Based on the first target clamping force, the initial displacement can be accurately determined from the second corresponding relationship, thereby reasonably setting the critical displacement.

[0019] In some optional implementations, the critical displacement is determined by:

[0020] Based on the second corresponding relationship, determining the second pressure plate displacement corresponding to the second target pressing force; wherein the second target pressing force is a preset pressing force in the pressing force in the increasing interval in the second corresponding relationship, the preset pressing force is the pressing force required to provide a preset torque, and the increasing interval is an interval in which the pressing force increases with the increase of the pressure plate displacement in the second corresponding relationship; and

[0021] determining a difference between an initial displacement of the pressure plate and a preset wear amount of the target clutch as a third pressure plate displacement;

[0022] The critical displacement is determined based on the second pressure plate displacement and the third pressure plate displacement.

[0023] The above scheme, by presetting the preset clamping force required to transmit the preset torque, determines the above preset clamping force (second target clamping force) from the interval in which the pressing force increases with the increase of the pressure plate displacement in the second corresponding relationship, and the pressure plate displacement corresponding to the second target clamping force is the minimum pressure plate displacement (second pressure plate displacement) that meets the clutch power requirement; by determining the difference between the initial displacement of the pressure plate and the preset wear amount of the target clutch, the third pressure plate displacement under the preset wear amount limit can be obtained; and then based on these two displacements, the critical displacement can be set more reasonably.

[0024] In some optional implementations, determining the critical displacement based on the second pressure plate displacement and the third pressure plate displacement includes:

[0025] comparing the second pressure plate displacement with the third pressure plate displacement, and determining the critical displacement based on the comparison result; or

[0026] taking the average value of the second pressure plate displacement and the third pressure plate displacement as the critical displacement; or

[0027] Based on a preset weight coefficient, a weighted average value of the second pressure plate displacement and the third pressure plate displacement is determined, and the weighted average value is used as the critical displacement.

[0028] In some optional implementations, determining whether a wear fault occurs on the driven disc of the target clutch based on the comparison result includes:

[0029] If the current pressure plate displacement of the target clutch is less than the critical displacement, it is determined that a wear fault occurs on the driven plate of the target clutch.

[0030] In the above scheme, since the critical displacement represents the wear failure of the driven plate of the target clutch, by comparing the current pressure plate displacement with the critical displacement of the pressure plate of the target clutch, if the current pressure plate displacement of the target clutch is less than the critical displacement, it means that the driven plate is severely worn, and it is accurately determined that the driven plate of the target clutch has a wear failure.

[0031] In a second aspect, an embodiment of the present application provides a device for determining a driven disc wear fault, comprising:

[0032] a displacement determination module, configured to determine a current pressure plate displacement corresponding to a current separation stroke of the target clutch based on a first corresponding relationship between a preset separation stroke and a pressure plate displacement;

[0033] a displacement comparison module, for comparing the current pressure plate displacement with a critical displacement of the pressure plate of the target clutch; the critical displacement is determined based on an initial displacement of the pressure plate and a preset wear amount of the target clutch;

[0034] The fault determination module is used to determine whether a wear fault occurs to the driven disc of the target clutch based on the comparison result.

[0035] In some optional implementations, the first corresponding relationship is determined in the following manner:

[0036] Determining a second corresponding relationship between the clamping force generated by the clamping and the displacement of the pressure plate under different wear states of the driven plate of the sample clutch; and

[0037] Determine a third corresponding relationship between the separation force generated by separation and the separation stroke under different wear states of the driven plate of the sample clutch;

[0038] The first corresponding relationship is determined based on the second corresponding relationship, the third corresponding relationship, and the association between the pressing force and the separation force.

[0039] In some optional implementations, the initial displacement is determined by:

[0040] Based on the second corresponding relationship, the first pressure plate displacement corresponding to the first target clamping force is determined as the initial displacement; wherein the first target clamping force is a preset clamping force in the clamping force in the decreasing interval in the second corresponding relationship, the preset clamping force is the clamping force required to provide a preset torque, and the decreasing interval is an interval in which the clamping force decreases with the increase of the pressure plate displacement in the second corresponding relationship.

[0041] In some optional implementations, the critical displacement is determined by:

[0042] Based on the second corresponding relationship, determining the second pressure plate displacement corresponding to the second target pressing force; wherein the second target pressing force is a preset pressing force in the pressing force in the increasing interval in the second corresponding relationship, the preset pressing force is the pressing force required to provide a preset torque, and the increasing interval is an interval in which the pressing force increases with the increase of the pressure plate displacement in the second corresponding relationship; and

[0043] determining a difference between an initial displacement of the pressure plate and a preset wear amount of the target clutch as a third pressure plate displacement;

[0044] The critical displacement is determined based on the second pressure plate displacement and the third pressure plate displacement.

[0045] In some optional implementations, determining the critical displacement based on the second pressure plate displacement and the third pressure plate displacement includes:

[0046] Comparing the second pressure plate displacement with the third pressure plate displacement, and determining the critical displacement based on the comparison result; or

[0047] taking the average value of the second pressure plate displacement and the third pressure plate displacement as the critical displacement; or

[0048] Based on a preset weight coefficient, a weighted average value of the second pressure plate displacement and the third pressure plate displacement is determined, and the weighted average value is used as the critical displacement.

[0049] In some optional implementations, the fault determination module is specifically configured to:

[0050] If the current pressure plate displacement of the target clutch is less than the critical displacement, it is determined that a wear fault occurs on the driven plate of the target clutch.

[0051] In a third aspect, an embodiment of the present application provides an electronic device, including a processor and a memory;

[0052] Wherein, the memory stores program codes, and when the program codes are executed by the processor, the processor executes the method for determining driven disk wear fault as described in any one of the first aspects.

[0053] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for determining a driven disk wear fault as described in any one of the first aspects is implemented.

[0054] In addition, the technical effects brought about by any implementation method in the second to fourth aspects can refer to the technical effects brought about by different implementation methods in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0056] Figure 1 A schematic diagram of the dry friction clutch structure provided in an embodiment of the present application;

[0057] Figure 2A schematic flow chart of a first method for determining a driven disc wear fault provided in an embodiment of the present application;

[0058] Figure 3 A schematic flowchart of a first corresponding relationship determination method provided in an embodiment of the present application;

[0059] Figure 4 A second corresponding relationship diagram provided in an embodiment of the present application;

[0060] Figure 5 A third corresponding relationship diagram provided in an embodiment of the present application;

[0061] Figure 6 A schematic flow chart of a second method for determining a driven disc wear fault provided in an embodiment of the present application;

[0062] Figure 7 A schematic diagram of the structure of a device for determining a driven disc wear fault provided in an embodiment of the present application;

[0063] Figure 8 A schematic block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0065] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0066] In the description of this application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two devices. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0067] At present, dry friction clutches are widely used in automotive powertrains. Figure 1As shown in FIG. 1 , the dry friction clutch includes a flywheel, a pressure plate, a driven plate and a release bearing. The dry friction clutch provides a pressing force through the pressure plate, presses the driven plate between the flywheel and the pressure plate, and transmits torque through the friction force generated.

[0068] During the frequent clamping and separation process, the friction plate of the driven disc will wear, resulting in reduced clamping force during operation. When the torque that can be transmitted by the clamping force is less than the required torque, the powertrain will not work properly. If the wear of the driven disc is not determined in time, it will affect the powertrain and cause safety accidents.

[0069] Based on this, an embodiment of the present application provides a method, device and electronic device for determining a driven disc wear fault, the method comprising: determining a current pressure plate displacement corresponding to the current separation stroke of the target clutch based on a first corresponding relationship between a preset separation stroke and a pressure plate displacement; comparing the current pressure plate displacement with a critical displacement of the pressure plate of the target clutch; the critical displacement is determined based on an initial displacement of the pressure plate and a preset wear amount of the target clutch; and determining whether a wear fault occurs to the driven disc of the target clutch based on the comparison result.

[0070] In the above scheme, since the thinner the friction plate of the driven disc is, the more serious the wear is, and the smaller the displacement of the pressure plate is when compressed, when the pressure plate displacement is reduced to the critical displacement of the pressure plate of the clutch, the torque required by the clutch cannot be transmitted, affecting the powertrain; however, the pressure plate displacement is difficult to measure directly. By presetting the corresponding relationship between the separation stroke and the pressure plate displacement, the current pressure plate displacement corresponding to the current separation stroke of the clutch can be accurately determined according to the corresponding relationship, and by comparing the current pressure plate displacement with the critical displacement of the pressure plate, the driven disc wear failure can be determined in a timely and accurate manner.

[0071] The following will be combined with the accompanying drawings and specific embodiments to describe in detail the technical solution of the present application and how the technical solution of the present application solves the above technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0072] The embodiment of the present application provides a first method for determining a driven disc wear fault, such as Figure 2 As shown, the method may include:

[0073] Step S201: Based on a preset first correspondence between a disengagement stroke and a pressure plate displacement, determining a current pressure plate displacement corresponding to a current disengagement stroke of a target clutch.

[0074] During implementation, it is necessary to determine the wear failure of the driven plate based on the pressure plate displacement of the target clutch, but the pressure plate displacement is difficult to measure directly; there is a certain correlation between the separation stroke and the pressure plate displacement, and by presetting a first corresponding relationship between the separation stroke and the pressure plate displacement, based on the first corresponding relationship, the current pressure plate displacement corresponding to the current separation stroke of the target clutch can be accurately determined.

[0075] This embodiment does not specifically limit the method for determining the current separation stroke, such as obtaining it by monitoring the displacement of the release bearing, or by converting it after monitoring the brake pedal stroke of the entire vehicle.

[0076] Step S202: Compare the current pressure plate displacement with the critical displacement of the pressure plate of the target clutch; the critical displacement is determined based on the initial displacement of the pressure plate and the preset wear amount of the target clutch.

[0077] In this embodiment, based on the initial displacement of the pressure plate and the preset wear amount of the target clutch, the critical displacement of the pressure plate that characterizes the driven plate wear failure of the target clutch can be accurately determined; and then the current pressure plate displacement is compared with the critical displacement to determine the wear condition of the driven plate.

[0078] Step S203: Determine whether a wear fault occurs to the driven disc of the target clutch based on the comparison result.

[0079] In the above scheme, since the thinner the friction plate of the driven disc is, the more serious the wear is, and the smaller the displacement of the pressure plate is when compressed, when the pressure plate displacement is reduced to the critical displacement of the pressure plate of the clutch, the torque required by the clutch cannot be transmitted, affecting the powertrain; however, the pressure plate displacement is difficult to measure directly. By presetting the corresponding relationship between the separation stroke and the pressure plate displacement, the current pressure plate displacement corresponding to the current separation stroke of the clutch can be accurately determined according to the corresponding relationship, and by comparing the current pressure plate displacement with the critical displacement of the pressure plate, the driven disc wear failure can be determined in a timely and accurate manner.

[0080] See also Figure 3 As shown, in some optional implementations, the first corresponding relationship is determined in the following manner:

[0081] Step S301: determining a second corresponding relationship between the clamping force generated by clamping and the displacement of the pressure plate under different wear states of the driven plate of the sample clutch; and determining a third corresponding relationship between the separation force generated by separation and the separation stroke under different wear states of the driven plate of the sample clutch;

[0082] For the driven plate of the sample clutch, under any wear state, by pressing (the pressure plate provides a pressing force to press the driven plate between the flywheel and the pressure plate), a pressing force and a pressure plate displacement are generated, and a corresponding relationship between the pressing force and the pressure plate displacement under the wear state is obtained; and then a second corresponding relationship between the pressing force generated by the pressing and the pressure plate displacement under different wear states of the driven plate of the sample clutch is obtained;

[0083] See also Figure 4 As shown, this embodiment exemplarily provides a second corresponding relationship between the clamping force and the displacement of the pressure plate.

[0084] For the driven plate of the sample clutch, under any wear state, by performing separation (the separation bearing applies separation force to the pressure plate, the diaphragm spring in the pressure plate is deformed, the pressure plate is lifted, and the driven plate is separated from the flywheel and the pressure plate), a separation force and a separation stroke are generated, and the corresponding relationship between the separation force and the separation stroke under the wear state is obtained; and then a third corresponding relationship between the separation force generated by separation and the separation stroke under different wear states of the driven plate of the sample clutch is obtained;

[0085] See also Figure 5 As shown, this embodiment exemplarily provides a third corresponding relationship between a separation force and a separation stroke.

[0086] Step S302: Determine the first corresponding relationship based on the second corresponding relationship, the third corresponding relationship, and the association between the pressing force and the separation force.

[0087] Since the second corresponding relationship is the corresponding relationship between the clamping force and the pressure plate displacement, and the third corresponding relationship is the corresponding relationship between the separation force and the separation stroke, there is a correlation between the clamping force and the separation force. Therefore, based on the above-mentioned second corresponding relationship, the third corresponding relationship, and the correlation between the clamping force and the separation force, the first corresponding relationship between the pressure plate displacement and the separation stroke can be accurately determined.

[0088] In some optional implementations, the initial displacement is determined by:

[0089] Based on the second corresponding relationship, the first pressure plate displacement corresponding to the first target clamping force is determined as the initial displacement; wherein the first target clamping force is a preset clamping force in the clamping force in the decreasing interval in the second corresponding relationship, the preset clamping force is the clamping force required to provide a preset torque, and the decreasing interval is an interval in which the clamping force decreases with the increase of the pressure plate displacement in the second corresponding relationship.

[0090] Since the clamping force corresponding to the initial displacement can transmit the preset torque, and during the continuous wear of the driven disc, the displacement of the pressure plate will gradually decrease from the initial displacement, the clamping force will first increase and then decrease from the clamping force corresponding to the initial displacement;

[0091] Based on this, this embodiment determines the preset clamping force (first target clamping force) from the interval in which the clamping force decreases with the increase of the pressure plate displacement in the second corresponding relationship by presetting the preset clamping force required to transmit the preset torque, and uses the pressure plate displacement corresponding to the first target clamping force as the initial displacement.

[0092] The above scheme determines the preset clamping force (first target clamping force) from the interval in which the clamping force decreases with the increase of the pressure plate displacement in the second corresponding relationship by presetting the preset clamping force required to transmit the preset torque. Based on the first target clamping force, the initial displacement can be accurately determined from the second corresponding relationship, thereby reasonably setting the critical displacement.

[0093] In some optional implementations, the critical displacement is determined by:

[0094] Based on the second corresponding relationship, determining the second pressure plate displacement corresponding to the second target pressing force; wherein the second target pressing force is a preset pressing force in the pressing force in the increasing interval in the second corresponding relationship, the preset pressing force is the pressing force required to provide a preset torque, and the increasing interval is an interval in which the pressing force increases with the increase of the pressure plate displacement in the second corresponding relationship; and

[0095] determining a difference between an initial displacement of the pressure plate and a preset wear amount of the target clutch as a third pressure plate displacement;

[0096] The critical displacement is determined based on the second pressure plate displacement and the third pressure plate displacement.

[0097] As mentioned above, the preset clamping force can transmit the preset torque and meet the clutch power requirement. During the continuous wear of the driven plate, the pressure plate displacement will gradually decrease from the initial displacement, and the clamping force will first increase and then decrease from the clamping force corresponding to the initial displacement. When the clamping force is smaller than the preset clamping force, the clutch power requirement cannot be met.

[0098] Based on this, this embodiment determines the above-mentioned preset clamping force (second target clamping force) from the interval in which the clamping force increases with the increase of the pressure plate displacement in the second corresponding relationship by presetting the preset clamping force required to transmit the preset torque. The pressure plate displacement corresponding to the second target clamping force is the minimum pressure plate displacement (second pressure plate displacement) that meets the clutch power requirement.

[0099] In addition, the present embodiment is also provided with a preset wear amount, and by determining the difference between the initial displacement of the pressure plate and the preset wear amount of the target clutch, the third pressure plate displacement within the preset wear amount limit can be obtained.

[0100] The above scheme, by presetting the preset clamping force required to transmit the preset torque, determines the above preset clamping force (second target clamping force) from the interval in which the pressing force increases with the increase of the pressure plate displacement in the second corresponding relationship, and the pressure plate displacement corresponding to the second target clamping force is the minimum pressure plate displacement (second pressure plate displacement) that meets the clutch power requirement; by determining the difference between the initial displacement of the pressure plate and the preset wear amount of the target clutch, the third pressure plate displacement under the preset wear amount limit can be obtained; and then based on these two displacements, the critical displacement can be set more reasonably.

[0101] In some optional implementation manners, the critical displacement is determined based on the second pressure plate displacement and the third pressure plate displacement, which can be achieved by but not limited to the following methods:

[0102] 1) Comparing the second pressure plate displacement with the third pressure plate displacement, and determining the critical displacement based on the comparison result.

[0103] Exemplarily, the second pressure plate displacement is the minimum pressure plate displacement that meets the clutch power requirement, and the third pressure plate displacement is the limited displacement under the preset wear limit; according to the actual application scenario, the smaller of the two displacements can be selected as the critical displacement, which can meet both the clutch power requirement and the preset wear limit.

[0104] 2) Taking the average value of the second pressure plate displacement and the third pressure plate displacement as the critical displacement.

[0105] In this embodiment, by comprehensively considering the clutch power demand and the preset wear limit, the average value of the second pressure plate displacement and the third pressure plate displacement can be calculated, and the average value is used as the critical displacement.

[0106] 3) Based on a preset weight coefficient, determine a weighted average value of the second pressure plate displacement and the third pressure plate displacement, and use the weighted average value as the critical displacement.

[0107] In this embodiment, the weight coefficients of the two displacements are preset by considering the clutch power demand and the different degrees of influence of the preset wear limit; the weighted average of the second pressure plate displacement and the third pressure plate displacement can be calculated based on the preset weight coefficients, and the weighted average is used as the critical displacement.

[0108] The above-mentioned methods for determining the critical displacement are only exemplary. In implementation, other methods may also be used to determine the critical displacement, which will not be described here.

[0109] The present application embodiment provides a second method for determining a driven disc wear fault, such as Figure 6 As shown, the method may include:

[0110] Step S601: Based on a preset first correspondence between a disengagement stroke and a pressure plate displacement, a current pressure plate displacement corresponding to a current disengagement stroke of a target clutch is determined.

[0111] Step S602: Compare the current pressure plate displacement with the critical displacement of the pressure plate of the target clutch; the critical displacement is determined based on the initial displacement of the pressure plate and the preset wear amount of the target clutch.

[0112] The specific implementation of steps S601 to S602 may refer to the above embodiment and will not be described in detail here.

[0113] Step S603: If the current pressure plate displacement of the target clutch is less than the critical displacement, it is determined that a wear fault occurs in the driven plate of the target clutch.

[0114] As mentioned above, the critical displacement characterizes the wear failure of the driven plate of the target clutch. If the current pressure plate displacement of the target clutch is less than the critical displacement, it means that the pressure plate displacement is too small when clamped, the friction plate of the driven plate is thin, and the wear is more serious. Therefore, it is determined that the driven plate of the target clutch has a wear failure. Conversely, if the current pressure plate displacement of the target clutch is not less than the critical displacement, it means that the pressure plate displacement is within a reasonable range when clamped, the friction plate of the driven plate is relatively normal, and the wear is not serious. Therefore, it is determined that the driven plate of the target clutch has no wear failure.

[0115] In the above scheme, since the critical displacement represents the wear failure of the driven plate of the target clutch, by comparing the current pressure plate displacement with the critical displacement of the pressure plate of the target clutch, if the current pressure plate displacement of the target clutch is less than the critical displacement, it means that the driven plate is severely worn, and it is accurately determined that the driven plate of the target clutch has a wear failure.

[0116] like Figure 7 As shown, based on the same inventive concept, an embodiment of the present application provides a driven disc wear fault determination device 700, comprising:

[0117] The displacement determination module 701 is used to determine the current pressure plate displacement corresponding to the current separation stroke of the target clutch based on a preset first correspondence relationship between the separation stroke and the pressure plate displacement;

[0118] A displacement comparison module 702, for comparing the current pressure plate displacement with a critical displacement of the pressure plate of the target clutch; the critical displacement is determined based on an initial displacement of the pressure plate and a preset wear amount of the target clutch;

[0119] The fault determination module 703 is used to determine whether a wear fault occurs to the driven disc of the target clutch based on the comparison result.

[0120] In some optional implementations, the first corresponding relationship is determined in the following manner:

[0121] Determining a second corresponding relationship between the clamping force generated by the clamping and the displacement of the pressure plate under different wear states of the driven plate of the sample clutch; and

[0122] Determine a third corresponding relationship between the separation force generated by separation and the separation stroke under different wear states of the driven plate of the sample clutch;

[0123] The first corresponding relationship is determined based on the second corresponding relationship, the third corresponding relationship, and the association between the pressing force and the separation force.

[0124] In some optional implementations, the initial displacement is determined by:

[0125] Based on the second corresponding relationship, the first pressure plate displacement corresponding to the first target clamping force is determined as the initial displacement; wherein the first target clamping force is a preset clamping force in the clamping force in the decreasing interval in the second corresponding relationship, the preset clamping force is the clamping force required to provide a preset torque, and the decreasing interval is an interval in which the clamping force decreases with the increase of the pressure plate displacement in the second corresponding relationship.

[0126] In some optional implementations, the critical displacement is determined by:

[0127] Based on the second corresponding relationship, determining the second pressure plate displacement corresponding to the second target pressing force; wherein the second target pressing force is a preset pressing force in the pressing force in the increasing interval in the second corresponding relationship, the preset pressing force is the pressing force required to provide a preset torque, and the increasing interval is an interval in which the pressing force increases with the increase of the pressure plate displacement in the second corresponding relationship; and

[0128] determining a difference between an initial displacement of the pressure plate and a preset wear amount of the target clutch as a third pressure plate displacement;

[0129] The critical displacement is determined based on the second pressure plate displacement and the third pressure plate displacement.

[0130] In some optional implementations, determining the critical displacement based on the second pressure plate displacement and the third pressure plate displacement includes:

[0131] Comparing the second pressure plate displacement with the third pressure plate displacement, and determining the critical displacement based on the comparison result; or

[0132] taking the average value of the second pressure plate displacement and the third pressure plate displacement as the critical displacement; or

[0133] Based on a preset weight coefficient, a weighted average value of the second pressure plate displacement and the third pressure plate displacement is determined, and the weighted average value is used as the critical displacement.

[0134] In some optional implementations, the fault determination module 703 is specifically configured to:

[0135] If the current pressure plate displacement of the target clutch is less than the critical displacement, it is determined that a wear fault occurs on the driven plate of the target clutch.

[0136] Since the device is the device in the method in the embodiment of the present application, and the principle of solving the problem by the device is similar to that of the method, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0137] like Figure 8 As shown, based on the same inventive concept, an embodiment of the present application provides an electronic device 800, including: a processor 801 and a memory 802;

[0138] The memory 802 may be a volatile memory, such as a random-access memory (RAM); the memory 802 may also be a non-volatile memory, such as a read-only memory, a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD); or the memory 802 may be any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 802 may be a combination of the above memories.

[0139] The processor 801 may include one or more central processing units (CPU), graphics processing units (GPU) or digital processing units, etc.

[0140] The specific connection medium between the memory 802 and the processor 801 is not limited in the embodiment of the present application. Figure 8 In the embodiment, the memory 802 and the processor 801 are connected via a bus 803. The bus 803 is connected to the processor 801 via a bus 803. Figure 8 In the figure, the bus 803 is shown by a bold line, and can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 8 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0141] The memory 802 stores program codes. When the program codes are executed by the processor 801, the processor 801 performs the following process:

[0142] Determining a current pressure plate displacement corresponding to a current separation stroke of the target clutch based on a preset first correspondence relationship between the separation stroke and the pressure plate displacement;

[0143] comparing the current pressure plate displacement with a critical displacement of the pressure plate of the target clutch; the critical displacement is determined based on an initial displacement of the pressure plate and a preset wear amount of the target clutch;

[0144] Based on the comparison result, it is determined whether a wear failure occurs on the driven disc of the target clutch.

[0145] In some optional implementations, the first corresponding relationship is determined in the following manner:

[0146] Determining a second corresponding relationship between the clamping force generated by the clamping and the displacement of the pressure plate under different wear states of the driven plate of the sample clutch; and

[0147] Determine a third corresponding relationship between the separation force generated by separation and the separation stroke under different wear states of the driven plate of the sample clutch;

[0148] The first corresponding relationship is determined based on the second corresponding relationship, the third corresponding relationship, and the association between the pressing force and the separation force.

[0149] In some optional implementations, the initial displacement is determined by:

[0150] Based on the second corresponding relationship, the first pressure plate displacement corresponding to the first target clamping force is determined as the initial displacement; wherein the first target clamping force is a preset clamping force in the clamping force in the decreasing interval in the second corresponding relationship, the preset clamping force is the clamping force required to provide a preset torque, and the decreasing interval is an interval in which the clamping force decreases with the increase of the pressure plate displacement in the second corresponding relationship.

[0151] In some optional implementations, the critical displacement is determined by:

[0152] Based on the second corresponding relationship, determining the second pressure plate displacement corresponding to the second target pressing force; wherein the second target pressing force is a preset pressing force in the pressing force in the increasing interval in the second corresponding relationship, the preset pressing force is the pressing force required to provide a preset torque, and the increasing interval is an interval in which the pressing force increases with the increase of the pressure plate displacement in the second corresponding relationship; and

[0153] determining a difference between an initial displacement of the pressure plate and a preset wear amount of the target clutch as a third pressure plate displacement;

[0154] The critical displacement is determined based on the second pressure plate displacement and the third pressure plate displacement.

[0155] In some optional implementations, determining the critical displacement based on the second pressure plate displacement and the third pressure plate displacement includes:

[0156] Comparing the second pressure plate displacement with the third pressure plate displacement, and determining the critical displacement based on the comparison result; or

[0157] taking the average value of the second pressure plate displacement and the third pressure plate displacement as the critical displacement; or

[0158] Based on a preset weight coefficient, a weighted average value of the second pressure plate displacement and the third pressure plate displacement is determined, and the weighted average value is used as the critical displacement.

[0159] In some optional implementations, the processor 801 specifically performs:

[0160] If the current pressure plate displacement of the target clutch is less than the critical displacement, it is determined that a wear fault occurs on the driven plate of the target clutch.

[0161] Since the electronic device is the electronic device that executes the method in the embodiment of the present application, and the principle of solving the problem by the electronic device is similar to that of the method, the implementation of the electronic device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0162] The embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of the above-mentioned driven disk wear fault determination method are implemented. The readable storage medium may be a non-volatile readable storage medium.

[0163] The present application is described above with reference to the block diagrams and / or flow charts showing the methods, devices (systems) and / or computer program products according to the embodiments of the present application. It should be understood that a block of the block diagram and / or flow chart diagram and a combination of blocks of the block diagram and / or flow chart diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor and / or other programmable device of a general-purpose computer, a special-purpose computer, to produce a machine, so that the instructions executed by the computer processor and / or other programmable device create a method for implementing the functions / actions specified in the block diagram and / or flow chart block.

[0164] Accordingly, the present application may also be implemented with hardware and / or software (including firmware, resident software, microcode, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium, which has a computer-usable or computer-readable program code implemented in the medium, for use by an instruction execution system or in conjunction with an instruction execution system. In the context of the present application, a computer-usable or computer-readable medium may be any medium that may contain, store, communicate, transmit, or convey a program for use by an instruction execution system, device, or apparatus, or in conjunction with an instruction execution system, device, or apparatus.

[0165] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0166] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for determining a driven disc wear fault, characterized in that: The method comprises: Determining a current pressure plate displacement corresponding to a current separation stroke of the target clutch based on a preset first correspondence relationship between the separation stroke and the pressure plate displacement; Comparing the current pressure plate displacement with the critical displacement of the pressure plate of the target clutch; the critical displacement is determined based on the initial displacement of the pressure plate and the preset wear amount of the target clutch; the initial displacement is the displacement of the pressure plate in the initial state; the critical displacement is the displacement of the pressure plate when the driven plate of the target clutch is worn out; Determining whether a wear fault occurs on a driven disc of the target clutch based on the comparison result; The first corresponding relationship is determined by: Determining a second corresponding relationship between the clamping force generated by the clamping and the displacement of the pressure plate under different wear states of the driven plate of the sample clutch; and Determine a third corresponding relationship between the separation force generated by separation and the separation stroke under different wear states of the driven plate of the sample clutch; The first corresponding relationship is determined based on the second corresponding relationship, the third corresponding relationship, and the association between the pressing force and the separation force.

2. The method according to claim 1, characterized in that The initial displacement is determined by: Based on the second corresponding relationship, the first pressure plate displacement corresponding to the first target clamping force is determined as the initial displacement; wherein the first target clamping force is a preset clamping force in the clamping force in the decreasing interval in the second corresponding relationship, the preset clamping force is the clamping force required to provide a preset torque, and the decreasing interval is an interval in which the clamping force decreases with the increase of the pressure plate displacement in the second corresponding relationship.

3. The method according to claim 1, characterized in that The critical displacement is determined by: Based on the second corresponding relationship, determining the second pressure plate displacement corresponding to the second target pressing force; wherein the second target pressing force is a preset pressing force in the pressing force in the increasing interval in the second corresponding relationship, the preset pressing force is the pressing force required to provide a preset torque, and the increasing interval is an interval in which the pressing force increases with the increase of the pressure plate displacement in the second corresponding relationship; and determining a difference between an initial displacement of the pressure plate and a preset wear amount of the target clutch as a third pressure plate displacement; The critical displacement is determined based on the second pressure plate displacement and the third pressure plate displacement.

4. The method according to claim 3, characterized in that Determining the critical displacement based on the second pressure plate displacement and the third pressure plate displacement includes: Comparing the second pressure plate displacement with the third pressure plate displacement, and determining the critical displacement based on the comparison result; or taking the average value of the second pressure plate displacement and the third pressure plate displacement as the critical displacement; or Based on a preset weight coefficient, a weighted average value of the second pressure plate displacement and the third pressure plate displacement is determined, and the weighted average value is used as the critical displacement.

5. The method according to any one of claims 1 to 4, characterized in that: Determining whether a driven disc of the target clutch has a wear fault based on the comparison result includes: If the current pressure plate displacement of the target clutch is less than the critical displacement, it is determined that a wear fault occurs on the driven plate of the target clutch.

6. A device for determining a driven disc wear fault, characterized in that: The device includes: a displacement determination module, configured to determine a current pressure plate displacement corresponding to a current separation stroke of the target clutch based on a first corresponding relationship between a preset separation stroke and a pressure plate displacement; A displacement comparison module, for comparing the current pressure plate displacement with the critical displacement of the pressure plate of the target clutch; the critical displacement is determined based on the initial displacement of the pressure plate and the preset wear amount of the target clutch; the initial displacement is the displacement of the pressure plate in the initial state; the critical displacement is the displacement of the pressure plate when the driven plate of the target clutch is worn out; A fault determination module, used for determining whether a wear fault occurs to the driven disc of the target clutch based on the comparison result; The first corresponding relationship is determined by: Determining a second corresponding relationship between the clamping force generated by the clamping and the displacement of the pressure plate under different wear states of the driven plate of the sample clutch; and Determine a third corresponding relationship between the separation force generated by separation and the separation stroke under different wear states of the driven plate of the sample clutch; The first corresponding relationship is determined based on the second corresponding relationship, the third corresponding relationship, and the association between the pressing force and the separation force.

7. An electronic device, characterized in that: include: Processor and memory; The memory stores program codes, and when the program codes are executed by the processor, the processor executes the method for determining a driven disk wear fault according to any one of claims 1 to 5.

8. 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 method for determining a driven disk wear fault according to any one of claims 1 to 5 is implemented.

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