Performance testing methods, devices, storage media, and vehicles for friction damping pads

Abstract

This invention discloses a method, apparatus, storage medium, and vehicle for testing the performance of friction-reducing pads. The method includes: acquiring vehicle power parameters and preset parameters, wherein the power parameters characterize the vehicle's driving state information, and the preset parameters characterize the vehicle's component information; determining the normal load of the vehicle on the friction-reducing pad based on the power parameters and preset parameters; determining the sliding speed of the vehicle's drive shaft sliding on the friction-reducing pad based on the normal load; determining the wear amount of the coating on the friction-reducing pad based on the normal load and sliding speed; and outputting early warning information for the friction-reducing pad based on the wear amount, wherein the early warning information indicates that the friction-reducing pad is in a state of impending failure. This invention solves the technical problem of difficulty in providing early warning processing for the lifespan of friction-reducing pads.

Description

Technical Field

[0001] This invention relates to the field of vehicles, and more specifically, to a method, apparatus, storage medium, and vehicle for testing the performance of friction-reducing pads. Background Technology

[0002] Currently, in the application of friction-reducing shims, friction-reducing shims are usually added directly to the mating surface between the drive shaft and the wheel hub. However, no relevant sensors are installed in the vehicle's control system, and there is no relevant monitoring or early warning system in the vehicle's control system. This leads to the technical problem of difficulty in providing early warning of the lifespan of the friction-reducing shims.

[0003] There is currently no effective solution to the technical problem of not being able to provide early warnings about the lifespan of friction-reducing gaskets. Summary of the Invention

[0004] This invention provides a method, apparatus, storage medium, and vehicle for testing the performance of friction-reducing gaskets, thereby at least solving the technical problem of difficulty in providing early warning of the lifespan of friction-reducing gaskets.

[0005] According to one aspect of the present invention, a performance testing method for a friction-reducing pad is provided. The method may include: acquiring vehicle power parameters and preset parameters, wherein the power parameters characterize the vehicle's driving state information, and the preset parameters characterize the vehicle's component information; determining the normal load of the vehicle on the friction-reducing pad based on the power parameters and preset parameters; determining the sliding speed of the vehicle's drive shaft sliding with the friction-reducing pad based on the normal load; determining the wear amount of the coating on the friction-reducing pad based on the normal load and sliding speed; and outputting a warning message for the friction-reducing pad based on the wear amount, wherein the warning message characterizes that the friction-reducing pad is in a state of impending failure.

[0006] Optionally, the power parameters include at least one of the following: lateral acceleration, longitudinal acceleration, and powertrain torque; the preset parameters include at least one of the following: front axle weight, rear axle weight, and coefficient of friction. Based on the power parameters and preset parameters, the normal load of the vehicle on the friction-reducing pad is determined, including: determining a first normal load corresponding to the lateral acceleration and the front axle weight, wherein the first normal load is used to characterize the normal load of the vehicle on the front drive axle friction-reducing pad; and determining a second normal load corresponding to the lateral acceleration and the rear axle weight, wherein the second normal load is used to characterize the normal load of the vehicle on the rear drive axle friction-reducing pad.

[0007] Optionally, determining the sliding speed of the vehicle's drive shaft and the anti-friction pad based on the normal load includes: determining the first sliding speed according to the mapping relationship between the first normal load, the friction coefficient, and the first sliding speed, wherein the first sliding speed is used to characterize the sliding speed of the vehicle's front drive shaft and the front drive shaft anti-friction pad; and determining the second sliding speed according to the mapping relationship between the second normal load, the friction coefficient, and the second sliding speed, wherein the second sliding speed is used to characterize the sliding speed of the vehicle's rear drive shaft and the rear drive shaft anti-friction pad.

[0008] Optionally, determining the wear amount of the coating of the friction-reducing pad based on the normal load and sliding speed includes: determining the wear amount of the coating of the first friction-reducing pad according to the mapping relationship between the first normal load, the first sliding speed and the wear amount of the coating of the first friction-reducing pad, wherein the first friction-reducing pad is used to characterize the friction-reducing pad disposed at the front drive shaft of the vehicle; and determining the wear amount of the coating of the second friction-reducing pad according to the mapping relationship between the second normal load, the second sliding speed and the wear amount of the coating of the second friction-reducing pad, wherein the second friction-reducing pad is used to characterize the friction-reducing pad disposed at the rear drive shaft of the vehicle.

[0009] Optionally, based on the amount of wear, a warning message for the friction-reducing pad is output, including: in response to the wear amount of the coating of the first friction-reducing pad being greater than or equal to a wear threshold, a warning message for the first friction-reducing pad is output; in response to the wear amount of the coating of the second friction-reducing pad being greater than or equal to a wear threshold, a warning message for the second friction-reducing pad is output.

[0010] Optionally, after outputting warning information for the friction-reducing pad based on the wear amount, the performance testing method for the friction-reducing pad further includes: uploading the wear amount of the coating of the first friction-reducing pad and / or the wear amount of the coating of the second friction-reducing pad to the cloud platform.

[0011] According to one aspect of the present invention, a performance testing device for a friction-reducing pad is provided. The device may include: an acquisition unit for acquiring power parameters and preset parameters of a vehicle, wherein the power parameters characterize the vehicle's driving state information, and the preset parameters characterize the vehicle's component information; a first determining unit for determining the normal load of the vehicle on the friction-reducing pad based on the power parameters and the preset parameters; a second determining unit for determining the sliding speed of the vehicle's drive shaft sliding with the friction-reducing pad based on the normal load; a third determining unit for determining the wear amount of the coating on the friction-reducing pad based on the normal load and the sliding speed; and an output unit for outputting warning information for the friction-reducing pad based on the wear amount, wherein the warning information characterizes that the friction-reducing pad is in a state of impending failure.

[0012] According to another aspect of the present invention, a computer-readable storage medium is also provided. The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to perform the performance testing method for the friction-reducing gasket of the present invention.

[0013] According to another aspect of the present invention, a processor is also provided. The processor is used to run a program, wherein the program, when run by the processor, executes the performance testing method for friction-reducing gaskets according to the embodiments of the present invention.

[0014] According to another aspect of the present invention, a vehicle is also provided, which is used to perform the performance testing method for friction-reducing pads according to the embodiments of the present invention.

[0015] In this embodiment of the invention, the vehicle's power parameters and preset parameters are first obtained. Then, based on the obtained power parameters and preset parameters, the normal load on the front drive axle friction-reducing pad and the normal load on the rear drive axle friction-reducing pad are determined. Then, based on the mapping relationship between the normal load on the front drive axle friction-reducing pad, the friction coefficient, and the first sliding speed, the first sliding speed is determined. And based on the mapping relationship between the normal load on the rear drive axle friction-reducing pad, the friction coefficient, and the second sliding speed, the second sliding speed is determined. Then, based on the above-mentioned normal load and the above-mentioned sliding speed, the wear amount of the coating of the first friction-reducing pad and the wear amount of the coating of the second friction-reducing pad can be determined respectively. Finally, by judging the relationship between the wear amount of the coating of the first friction-reducing pad and the wear threshold, and judging the relationship between the wear amount of the coating of the second friction-reducing pad and the wear threshold, it can be determined whether it is necessary to remind the user to carry out maintenance, thereby achieving the purpose of avoiding the breakage of the friction-reducing pad, thus solving the technical problem of difficulty in providing early warning processing for the life of the friction-reducing pad, and realizing the technical effect of providing early warning processing for the life of the friction-reducing pad. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a flowchart of a performance testing method for a friction-reducing gasket according to an embodiment of the present invention;

[0018] Figure 2(a) is a schematic diagram of a friction-reducing gasket structure according to an embodiment of the present invention;

[0019] Figure 2(b) is a schematic diagram of another friction-reducing gasket structure according to an embodiment of the present invention;

[0020] Figure 3This is a schematic diagram of a cloud-based friction-reducing gasket life warning system according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of a performance testing device for a friction-reducing gasket according to an embodiment of the present invention. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] Example 1

[0025] According to an embodiment of the present invention, a method for testing the performance of a friction-reducing gasket is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0026] Figure 1 This is a flowchart of a performance testing method for a friction-reducing gasket according to an embodiment of the present invention, which may include the following steps:

[0027] Step S101: Obtain the vehicle's power parameters and preset parameters.

[0028] In the technical solution provided by step S101 of the present invention, the power parameters of the vehicle can be obtained through the data acquisition unit in the vehicle, and the preset parameters of the vehicle can be obtained through the data storage unit in the vehicle. The data acquisition unit may include a gear position sensor, an acceleration sensor, a steering wheel torque angle sensor, and a vehicle speed sensor, etc. The power parameters can be used to characterize the driving status information of the vehicle. The data storage unit may include a data storage device. The preset parameters can be used to characterize the component information of the vehicle. This is only an example and is not specifically limited.

[0029] Optionally, the gear position of the vehicle's transmission system can be obtained through the gear position sensor, the lateral acceleration and longitudinal acceleration of the vehicle can be obtained through the acceleration sensor, the steering wheel angle of the vehicle can be obtained through the steering wheel torque angle sensor, the vehicle speed can be obtained through the vehicle speed sensor, and the vehicle weight, front axle weight, rear axle weight and tire rolling radius can be obtained through the data storage.

[0030] Step S102: Based on the power parameters and preset parameters, determine the normal load of the vehicle on the friction-reducing pad.

[0031] In the technical solution provided by step S102 of the present invention, after obtaining the vehicle's power parameters and preset parameters, the normal load of the vehicle on the front drive axle friction-reducing pad can be determined based on the lateral acceleration, the weight of the front axle and the normal load of the vehicle on the front drive axle friction-reducing pad, and the normal load of the vehicle on the rear drive axle friction-reducing pad based on the lateral acceleration, the weight of the rear axle and the normal load of the vehicle on the rear drive axle friction-reducing pad, thereby determining the normal load of the vehicle on the friction-reducing pad.

[0032] Optionally, the normal load on the front drive axle friction-reducing shim can be calculated using the following formula (1), and the normal load on the rear drive axle friction-reducing shim can be calculated using the following formula (2):

[0033] NF=Fb+QF*ay (1)

[0034] NR=Fb+QR*ay (2)

[0035] Among them, Fb can be used to characterize the axial force generated after the half-shaft nut is installed, QF can be used to characterize the front axle weight, NF can be used to characterize the normal load of the front drive shaft anti-friction shim, QR can be used to characterize the rear axle weight, ay can be used to characterize the lateral acceleration, and NR can be used to characterize the normal load of the rear drive shaft anti-friction shim.

[0036] Step S103: Based on the normal load, determine the sliding speed of the vehicle's drive shaft and the friction-reducing pad.

[0037] In the technical solution provided by step S103 of the present invention, after determining the normal load of the vehicle on the friction-reducing pad, and given that the coefficient of friction has been determined, the sliding speed of the front drive shaft and the front drive shaft friction-reducing pad can be determined based on the normal load of the vehicle on the front drive shaft friction-reducing pad and the sliding speed of the front drive shaft and the front drive shaft friction-reducing pad. Furthermore, given that the coefficient of friction has been determined, the sliding speed of the rear drive shaft and the rear drive shaft friction-reducing pad can be determined based on the normal load of the vehicle on the rear drive shaft friction-reducing pad and the sliding speed of the rear drive shaft and the rear drive shaft friction-reducing pad. Thus, the sliding speed of the vehicle's drive shaft and the friction-reducing pad can be determined.

[0038] Optionally, the sliding speed of the front drive axle and the front drive axle anti-friction pad can be calculated using the following formula (3), and the sliding speed of the rear drive axle and the rear drive axle anti-friction pad can be calculated using the following formula (4):

[0039]

[0040]

[0041] Where 'c' can be used to characterize the torque distribution coefficients of the front and rear drive shafts, 'Rv' can be used to characterize the equivalent friction radius, 'JF' can be used to characterize the moment of inertia of the front drive shaft, 'JR' can be used to characterize the moment of inertia of the rear drive shaft, and 'θ'... F θ can be used to characterize the maximum angular displacement of the front drive shaft sliding against the anti-friction shim. R It can be used to characterize the maximum angular displacement of the rear drive shaft sliding with the anti-friction shim, Te can be used to characterize the torque of the power system, i can be used to characterize the overall speed ratio of the transmission system, VF can be used to characterize the sliding speed of the front drive shaft sliding with the front drive shaft anti-friction shim, and VR can be used to characterize the sliding speed of the rear drive shaft sliding with the rear drive shaft anti-friction shim.

[0042] Step S104: Determine the wear amount of the coating of the friction-reducing pad based on the normal load and sliding speed.

[0043] In the technical solution provided in step S104 of the present invention, after determining the sliding speed of the vehicle's drive shaft and the friction-reducing pad, the wear amount of the coating of the friction-reducing pad provided at the front drive shaft of the vehicle can be determined based on the normal load on the friction-reducing pad of the vehicle on the front drive shaft and the sliding speed of the front drive shaft and the front drive shaft friction-reducing pad. Based on the normal load on the friction-reducing pad of the vehicle on the rear drive shaft and the sliding speed of the rear drive shaft and the rear drive shaft friction-reducing pad, the wear amount of the coating of the friction-reducing pad provided at the rear drive shaft of the vehicle can be determined. Thus, the wear amount of the coating of the friction-reducing pad can be determined.

[0044] Alternatively, the wear amount of the coating on the friction-reducing pad can be calculated using the following formula (5):

[0045] Pw=k*N*(f*u)a / Vb (5)

[0046] Among them, k, a, and b can be used to characterize known coefficients, N can be used to characterize the normal load of the friction-reducing pad, f can be used to characterize the natural frequency, u can be used to characterize the friction coefficient, V can be used to characterize the sliding speed between the drive shaft and the friction-reducing pad, and Pw can be used to characterize the wear amount of the coating of the friction-reducing pad.

[0047] Optionally, a calculation model for the wear amount of the coating of the friction-reducing pad can be preset in the life warning module deployed on the cloud platform. The calculation model can be implemented by the above formulas (1) to (5). This allows the wear amount of the coating of the friction-reducing pad to be calculated by the life warning module based on the preset calculation model in the module after the power system torque, transmission system gear, lateral acceleration, longitudinal acceleration, steering wheel angle and vehicle speed signals are sent to the cloud platform through the controller local area network bus and intelligent vehicle terminal at a predetermined sampling frequency.

[0048] Step S105: Based on the wear amount, output early warning information for the friction-reducing pad.

[0049] In the technical solution provided by step S105 of the present invention, after determining the wear amount of the coating of the friction-reducing pad, the relationship between the wear amount of the coating of the friction-reducing pad and the wear threshold is judged. That is, the relationship between the wear amount of the coating of the friction-reducing pad installed on the front drive shaft of the vehicle and the wear threshold is judged, and then a warning message for the friction-reducing pad installed on the front drive shaft of the vehicle is output. Similarly, the relationship between the wear amount of the coating of the friction-reducing pad installed on the rear drive shaft of the vehicle and the wear threshold is judged, and then a warning message for the friction-reducing pad installed on the rear drive shaft of the vehicle is output. The warning message can be used to characterize that the friction-reducing pad is in a state of impending failure, thereby achieving the purpose of avoiding the breakage of the friction-reducing pad.

[0050] In steps S101 to S105 of this application, the vehicle's power parameters and preset parameters are first obtained. Then, based on the obtained power parameters and preset parameters, the normal load on the front drive axle friction-reducing pad and the normal load on the rear drive axle friction-reducing pad are determined. Next, based on the mapping relationship between the normal load on the front drive axle friction-reducing pad, the friction coefficient, and the first sliding speed, the first sliding speed is determined. Similarly, based on the mapping relationship between the normal load on the rear drive axle friction-reducing pad, the friction coefficient, and the second sliding speed, the second sliding speed is determined. Finally, based on the aforementioned... Based on the load and the aforementioned sliding speed, the wear amount of the coating of the first friction-reducing gasket and the wear amount of the coating of the second friction-reducing gasket can be determined respectively. Finally, by judging the relationship between the wear amount of the coating of the first friction-reducing gasket and the wear threshold, and judging the relationship between the wear amount of the coating of the second friction-reducing gasket and the wear threshold, it can be determined whether it is necessary to remind the user to carry out maintenance, thereby achieving the purpose of avoiding the breakage of the friction-reducing gasket, thus solving the technical problem of difficulty in early warning of the life of the friction-reducing gasket, and realizing the technical effect of early warning of the life of the friction-reducing gasket.

[0051] The method described in this embodiment will be further described below.

[0052] As an optional embodiment, in step S102, the power parameters include at least one of the following: lateral acceleration, longitudinal acceleration, and power system torque, and the preset parameters include at least one of the following: front axle weight, rear axle weight, and friction coefficient. Based on the power parameters and preset parameters, the normal load of the vehicle on the friction-reducing pad is determined, including: determining a first normal load corresponding to the lateral acceleration and the front axle weight; and determining a second normal load corresponding to the lateral acceleration and the rear axle weight.

[0053] In this embodiment, after obtaining the vehicle's power parameters and preset parameters, the first normal load corresponding to the lateral acceleration and the front axle weight can be determined according to the mapping relationship between lateral acceleration, front axle weight and the first normal load. The second normal load corresponding to the lateral acceleration and the rear axle weight can be determined according to the mapping relationship between lateral acceleration, rear axle weight and the second normal load. The first normal load can be used to characterize the normal load of the vehicle on the front drive axle friction-reducing pad, and the second normal load can be used to characterize the normal load of the vehicle on the rear drive axle friction-reducing pad.

[0054] Optionally, the first normal load corresponding to the lateral acceleration and the front axle weight can be determined according to the mapping relationship between the lateral acceleration, the front axle weight and the first normal load, which can be accomplished by the above formula (1).

[0055] Optionally, the second normal load corresponding to the lateral acceleration and the rear axle weight can be determined according to the mapping relationship between the lateral acceleration, the rear axle weight and the second normal load, which can be accomplished by the above formula (2).

[0056] As an optional embodiment, step S103, based on the normal load, determines the sliding speed of the vehicle's drive shaft and the friction-reducing pad, including: determining the first sliding speed according to the mapping relationship between the first normal load, the friction coefficient, and the first sliding speed; and determining the second sliding speed according to the mapping relationship between the second normal load, the friction coefficient, and the second sliding speed.

[0057] In this embodiment, after determining the first normal load and the second normal load, and given that the moment of inertia is already determined, the first sliding speed can be determined according to the mapping relationship between the first normal load, the coefficient of friction, and the first sliding speed. Similarly, the second sliding speed can be determined according to the mapping relationship between the second normal load, the coefficient of friction, and the second sliding speed. The first sliding speed can be used to characterize the sliding speed of the front drive shaft and the front drive shaft anti-friction pad of the vehicle, and the second sliding speed can be used to characterize the sliding speed of the rear drive shaft and the rear drive shaft anti-friction pad of the vehicle.

[0058] Optionally, given that the moment of inertia is determined, the first sliding velocity can be determined according to the mapping relationship between the first normal load, the coefficient of friction, and the first sliding velocity, which can be accomplished by the following equation (3):

[0059]

[0060] Where c can be used to characterize the torque distribution coefficients of the front and rear drive shafts, Rv can be used to characterize the equivalent friction radius, JF can be used to characterize the moment of inertia of the front drive shaft, and θ F Te can be used to characterize the maximum angular displacement of the front drive shaft sliding with the anti-friction shim, Te can be used to characterize the torque of the power system, i can be used to characterize the overall speed ratio of the transmission system, and VF can be used to characterize the sliding speed of the front drive shaft sliding with the front drive shaft anti-friction shim.

[0061] Alternatively, given that the moment of inertia is determined, the second sliding velocity can be determined according to the mapping relationship between the second normal load, the friction coefficient, and the second sliding velocity, which can be accomplished by the following equation (4):

[0062]

[0063] Among them, JR can be used to characterize the moment of inertia of the rear drive shaft, θ RVR can be used to characterize the maximum angular displacement of the rear drive shaft and the anti-friction shim, and can be used to characterize the sliding speed of the rear drive shaft and the rear drive shaft anti-friction shim.

[0064] As an optional embodiment, step S104, determining the wear amount of the coating of the friction-reducing pad based on the normal load and the sliding speed, includes: determining the wear amount of the coating of the first friction-reducing pad according to the mapping relationship between the first normal load, the first sliding speed and the wear amount of the coating of the first friction-reducing pad; and determining the wear amount of the coating of the second friction-reducing pad according to the mapping relationship between the second normal load, the second sliding speed and the wear amount of the coating of the second friction-reducing pad.

[0065] In this embodiment, after determining the first sliding speed and the second sliding speed, and given that the coefficient of friction has been determined, the wear amount of the coating of the first friction-reducing pad can be determined according to the mapping relationship between the first normal load, the first sliding speed, and the wear amount of the coating of the first friction-reducing pad. Similarly, the wear amount of the coating of the second friction-reducing pad can be determined according to the mapping relationship between the second normal load, the second sliding speed, and the wear amount of the coating of the second friction-reducing pad. The first friction-reducing pad can be used to characterize the friction-reducing pad installed at the front drive shaft of the vehicle, and the second friction-reducing pad can be used to characterize the friction-reducing pad installed at the rear drive shaft of the vehicle.

[0066] Optionally, the wear amount of the coating of the first friction-reducing pad can be determined according to the mapping relationship between the first normal load, the first sliding speed and the wear amount of the coating of the first friction-reducing pad, which can be accomplished by the following formula (6):

[0067] P wF = k*NF*(f*u) a / (VF) b (6)

[0068] Where k, a, and b can be used to characterize known coefficients, NF can be used to characterize the normal load on the front drive shaft anti-friction shim, f can be used to characterize the natural frequency, u can be used to characterize the friction coefficient, VF can be used to characterize the sliding speed between the front drive shaft and the front drive shaft anti-friction shim, and P... wF It can be used to characterize the wear of the coating on the front drive shaft friction-reducing pad.

[0069] Optionally, the wear amount of the coating of the second friction-reducing pad can be determined according to the mapping relationship between the second normal load, the second sliding speed and the wear amount of the coating of the second friction-reducing pad, which can be accomplished by the following formula (7):

[0070] P wR = k*NR*(f*u) a / (VR) b (7)

[0071] Where k, a, and b can be used to characterize known coefficients, NR can be used to characterize the normal load on the rear drive shaft anti-friction shim, f can be used to characterize the natural frequency, u can be used to characterize the friction coefficient, VR can be used to characterize the sliding speed between the rear drive shaft and the rear drive shaft anti-friction shim, and P wF It can be used to characterize the wear of the coating on the rear drive shaft friction-reducing pad.

[0072] As an optional embodiment, step S105, based on the amount of wear, outputs warning information for the friction-reducing pad, including: in response to the wear amount of the coating of the first friction-reducing pad being greater than or equal to a wear threshold, outputting warning information for the first friction-reducing pad; in response to the wear amount of the coating of the second friction-reducing pad being greater than or equal to a wear threshold, outputting warning information for the second friction-reducing pad.

[0073] In this embodiment, after determining the wear amount of the coating of the first friction-reducing pad and the wear amount of the coating of the second friction-reducing pad, the relationship between the wear amount of the coating of the friction-reducing pad and the wear threshold is judged. That is, the relationship between the wear amount of the coating of the first friction-reducing pad and the wear threshold is judged. If the wear amount of the coating of the first friction-reducing pad is greater than or equal to the wear threshold, a warning message for the first friction-reducing pad is output. Similarly, the relationship between the wear amount of the coating of the second friction-reducing pad and the wear threshold is judged. If the wear amount of the coating of the second friction-reducing pad is greater than or equal to the wear threshold, a warning message for the second friction-reducing pad is output. This achieves the purpose of preventing the friction-reducing pad from breaking.

[0074] Optionally, if the wear amount of the coating of the first friction-reducing pad is less than the wear threshold, the first friction-reducing pad is used continuously, and the wear amount of the coating of the first friction-reducing pad is updated in real time until the wear amount of the coating of the first friction-reducing pad is greater than or equal to the wear threshold, and then the warning information of the first friction-reducing pad is output.

[0075] Optionally, if the wear amount of the coating of the second friction-reducing pad is less than the wear threshold, the second friction-reducing pad continues to be used, and the wear amount of the coating of the second friction-reducing pad is updated in real time until the wear amount of the coating of the second friction-reducing pad is greater than or equal to the wear threshold, at which point a warning message for the second friction-reducing pad is output.

[0076] Alternatively, the wear threshold can be calculated using the following formula:

[0077] P W =0.75*(D 2 -d 2 )*t*ρ (8)

[0078] Where D can be used to characterize the outer diameter of the friction-reducing gasket, d can be used to characterize the inner diameter of the friction-reducing gasket, t can be used to characterize the coating thickness of the friction-reducing gasket, and ρ can be used to characterize the coating density of the friction-reducing gasket.

[0079] As an optional embodiment, after outputting the warning information of the friction-reducing pad based on the wear amount in step S105, the performance detection method of the friction-reducing pad further includes: uploading the wear amount of the coating of the first friction-reducing pad and / or the wear amount of the coating of the second friction-reducing pad to the cloud platform.

[0080] In this embodiment, after outputting warning information for the first and second friction-reducing pads, the wear amount of the coating of the first and / or the second friction-reducing pad is uploaded to a cloud platform. Then, a life correction module deployed on the cloud platform calculates the actual damage to the friction-reducing pad using image recognition. The wear amount of the coating of the first and / or the second friction-reducing pad, along with the calculated actual damage, is sent to the OEM's database. Based on the data received from the database, the accuracy of the preset algorithm in the life warning module is evaluated, and the preset algorithm in the life warning module is iteratively optimized based on the actual wear of the coating of the friction-reducing pad. The life warning module can be deployed on a cloud platform and can be used to determine the wear amount of the coating of the friction-reducing pad based on the preset algorithm in the module.

[0081] This embodiment first acquires the vehicle's power parameters and preset parameters. Then, based on the acquired power parameters and preset parameters, it determines the normal load on the front drive axle friction-reducing pad and the normal load on the rear drive axle friction-reducing pad. Next, based on the mapping relationship between the normal load on the front drive axle friction-reducing pad, the coefficient of friction, and the first sliding speed, it determines the first sliding speed. Similarly, based on the mapping relationship between the normal load on the rear drive axle friction-reducing pad, the coefficient of friction, and the second sliding speed, it determines the second sliding speed. Based on the aforementioned normal load and sliding speed, the wear amount of the coating on the first friction-reducing pad and the wear amount of the coating on the second friction-reducing pad can be determined respectively. Finally, by judging the relationship between the wear amount of the coating on the first friction-reducing pad and the wear threshold, and by judging the relationship between the wear amount of the coating on the second friction-reducing pad and the wear threshold, it can be determined whether it is necessary to remind the user to perform maintenance. This solves the technical problem of difficulty in providing early warning processing for the lifespan of friction-reducing pads and achieves the technical effect of providing early warning processing for the lifespan of friction-reducing pads.

[0082] Example 2

[0083] The technical solutions of the embodiments of the present invention will be illustrated below with reference to preferred embodiments.

[0084] In current applications of friction-reducing shims, the shims are typically added directly to the mating surface between the drive shaft and the wheel hub. However, no related sensors are deployed in the vehicle's control system, and there is no monitoring or early warning component within the system. This leads to the technical problem of difficulty in providing early warnings about the lifespan of the friction-reducing shims. Therefore, a method for early warning of friction-reducing shim lifespan is needed to ensure that early warnings can be provided for the lifespan of the friction-reducing shims.

[0085] In one related technology, a smart drive axle health monitoring system and method based on cloud-edge collaborative computing is disclosed, comprising: a vehicle axle operation data acquisition module, an on-board edge computing module, a communication module, and a vehicle axle cloud-based fault prediction module; the vehicle axle operation data acquisition module includes the acquisition and storage of drive axle housing data; the on-board edge computing module is used for data processing and logical judgment; the communication module is used to transmit data from the vehicle axle operation data acquisition module to the on-board edge computing module, and transmit data from the on-board edge computing module to the vehicle axle cloud-based fault prediction module; the vehicle axle cloud-based fault prediction module is used for big data analysis of the data and to publish fault predictions. However, this system only includes the vehicle axle operation data acquisition module, the on-board edge computing module, the communication module, and the vehicle axle cloud-based fault prediction module, and cannot monitor and calculate the wear of the coating of the friction-reducing gasket in real time, thus making it difficult to guarantee early warning processing of the lifespan of the friction-reducing gasket.

[0086] In another related technology, a method, system, medium, and device for real-time fatigue life prediction of wind turbine shaft systems are disclosed, including: a method and system for predicting the life of newly operating wind turbine shaft systems and a method and system for predicting the life of historical wind turbine shaft systems. The method and system for predicting the life of newly operating wind turbine shaft systems includes: acquiring wind turbine operating parameters to form a wind speed-turbulence matrix; inputting the wind speed-turbulence matrix into a pre-constructed shaft system wind speed-turbulence combined fatigue damage matrix model to obtain the real-time fatigue damage value of the shaft system; and performing cumulative analysis on the real-time fatigue damage values ​​within the operating cycle to obtain the fatigue life of the wind turbine shaft system. However, this method only performs cumulative analysis on the real-time fatigue damage values ​​within the operating cycle and cannot monitor and calculate the wear of the coating of the friction-reducing pad in real time, thus making it difficult to guarantee early warning processing of the life of the friction-reducing pad.

[0087] However, this invention proposes a method for early warning of the lifespan of friction-reducing gaskets. By monitoring and calculating the wear of the coating of the friction-reducing gasket in real time, the lifespan of the friction-reducing gasket can be identified in advance, thereby avoiding the breakage of the friction-reducing gasket and solving the technical problem of difficulty in early warning of the lifespan of friction-reducing gaskets.

[0088] Figure 2(a) is a schematic diagram of a friction-reducing shim structure according to an embodiment of the present invention. As shown in Figure 2(a), the friction-reducing shim structure may include: a half-shaft nut 201, a hub bearing 202, a friction-reducing shim 203, and a drive shaft 204.

[0089] Figure 2(b) is a schematic diagram of another friction-reducing shim structure according to an embodiment of the present invention. As shown in Figure 2(b), the schematic diagram is a cross-sectional view of the friction-reducing shim structure, wherein the friction-reducing shim structure may include: half-shaft nut 201, wheel hub bearing 202, friction-reducing shim 203 and drive shaft 204.

[0090] Figure 3 This is a schematic diagram of a cloud-based friction-reducing gasket life warning system according to an embodiment of the present invention, as shown below. Figure 3 As shown, the system may include: a data communication unit 301, a controller local area network (Controller Area Network) 302, an intelligent vehicle terminal 303, a cloud platform 304, a warning system 305, an OEM 306, a maintenance unit 307, a user 308, and an instrument cluster 309. The data communication unit 301 can be connected to the controller local area network 302, the controller local area network 302 can be connected to the intelligent vehicle terminal 303, the intelligent vehicle terminal 303 can be connected to the cloud platform 304, the cloud platform 304 can be connected to the warning system 305, the warning system 305 can be connected to the OEM 306, the OEM 306 can be connected to the maintenance unit 307, the maintenance unit 307 can be connected to the user 308, and the user 308 can be connected to the instrument cluster 309.

[0091] Optionally, the data communication unit 301 can transmit data information such as power system torque, transmission system gear position, lateral acceleration, longitudinal acceleration, steering wheel angle and vehicle speed to the controller local area network 302.

[0092] Optionally, the friction-reducing gasket life warning system can be implemented through the following steps:

[0093] Step 1: Obtain big data signals and vehicle parameters. The big data signals may include at least one of the following: powertrain torque Te, transmission gear G, lateral acceleration ay, longitudinal acceleration ax, steering wheel angle θ, and vehicle speed Ve. The vehicle parameters may include at least one of the following: vehicle weight Q, front axle weight QF, rear axle weight QR, and tire rolling radius Rd.

[0094] Step 2: Calculate the normal load on the friction-reducing gasket using the following formula:

[0095] NF=Fb+QF*ay (1)

[0096] NR=Fb+QR*ay (2)

[0097] Among them, Fb can be used to characterize the axial force generated after the half-shaft nut is installed, QF can be used to characterize the front axle weight, NF can be used to characterize the normal load of the front drive shaft anti-friction shim, QR can be used to characterize the rear axle weight, ay can be used to characterize the lateral acceleration, and NR can be used to characterize the normal load of the rear drive shaft anti-friction shim.

[0098] Step 3: Calculate the vehicle's sliding speed using the following formula:

[0099]

[0100]

[0101] Where 'c' can be used to characterize the torque distribution coefficients of the front and rear drive shafts, 'Rv' can be used to characterize the equivalent friction radius, 'JF' can be used to characterize the moment of inertia of the front drive shaft, 'JR' can be used to characterize the moment of inertia of the rear drive shaft, and 'θ'... F θ can be used to characterize the maximum angular displacement of the front drive shaft sliding against the anti-friction shim. R It can be used to characterize the maximum angular displacement of the rear drive shaft sliding with the anti-friction shim, Te can be used to characterize the torque of the power system, i can be used to characterize the overall speed ratio of the transmission system, VF can be used to characterize the sliding speed of the front drive shaft sliding with the front drive shaft anti-friction shim, and VR can be used to characterize the sliding speed of the rear drive shaft sliding with the rear drive shaft anti-friction shim.

[0102] Optionally, when VF or VR < 0, it is considered that the torque Te of the power system is insufficient to make the friction-reducing shim slide with the wheel hub bearing mating surface, and the wear of the coating of the friction-reducing shim is not calculated.

[0103] Step 4: Calculate the wear amount of the coating on the friction-reducing gasket using the following formula:

[0104] Pw = k * N * (f * u) a / V b (5)

[0105] Among them, k, a, and b can be used to characterize known coefficients, N can be used to characterize the normal load of the friction-reducing pad, f can be used to characterize the natural frequency, u can be used to characterize the friction coefficient, V can be used to characterize the sliding speed between the drive shaft and the friction-reducing pad, and Pw can be used to characterize the wear amount of the coating of the friction-reducing pad.

[0106] Optionally, the wear of the coating on the friction-reducing pad can be calculated in real time and accumulated.

[0107] Optionally, the friction-reducing gasket life warning system may include a life warning subsystem and a life correction subsystem. In the life warning subsystem, signals such as powertrain torque, transmission gear position, lateral acceleration, longitudinal acceleration, steering wheel angle, and vehicle speed can be sent to a cloud platform via a Controller Area Network (CAN) bus and a Telematic-Box (T-Box) at a predetermined sampling frequency. A life warning module is deployed on this cloud platform. This module calculates the wear amount of the friction-reducing gasket coating based on the algorithm in the five steps mentioned above, then sends and records the wear amount in the OEM's database. When the remaining mileage is 10,000 kilometers (or as set by the OEM), maintenance information is pushed to the repair shop, notifying the user to bring the gasket for repair. This maintenance information can be simultaneously transmitted via the cloud platform, T-Box, and CAN bus. The information is displayed on the instrument panel to remind the user to perform maintenance. In the life correction subsystem, high-definition photos of the friction-reducing shims, the residual torque of the half-shaft nut, and the fault mileage are recorded and uploaded to the cloud platform. The life correction module in the cloud platform calculates the actual damage of the friction-reducing shims using image recognition methods according to the preset program. Then, the actual damage of the friction-reducing shims and the cumulative damage of the friction-reducing shims calculated by the life warning module are sent to the OEM's database. The accuracy of the preset algorithm in the life warning module is evaluated based on the data in the database, and the preset algorithm in the life warning module is iteratively optimized according to the actual situation.

[0108] Optionally, by judging the relationship between the total wear amount of the coating of the friction-reducing pad calculated by accumulation and the wear threshold, it can be determined whether the remaining mileage is 10,000 kilometers. This can determine whether it is necessary to remind the user to carry out maintenance. That is, if the total wear amount of the coating of the friction-reducing pad calculated by accumulation exceeds the wear threshold, it is determined that the remaining mileage is 10,000 kilometers and the user needs to be reminded to carry out maintenance. If the total wear amount of the coating of the friction-reducing pad calculated by accumulation does not exceed the wear threshold, it is determined that the remaining mileage is not 10,000 kilometers and the user does not need to be reminded to carry out maintenance.

[0109] Alternatively, the wear threshold can be calculated using the following formula:

[0110] P W =0.75*(D 2 -d 2 )*t*ρ(8)

[0111] Where D can be used to characterize the outer diameter of the friction-reducing gasket, d can be used to characterize the inner diameter of the friction-reducing gasket, t can be used to characterize the coating thickness of the friction-reducing gasket, and ρ can be used to characterize the coating density of the friction-reducing gasket.

[0112] In this embodiment, firstly, large data signals and vehicle parameters are acquired. Then, based on the large data signals and vehicle parameters, the normal loads of the front drive axle friction-reducing shims and the rear drive axle friction-reducing shims can be determined. Next, based on the normal load of the front drive axle friction-reducing shims, the sliding speed between the front drive axle and the friction-reducing shims can be calculated. Similarly, based on the normal load of the rear drive axle friction-reducing shims, the sliding speed between the rear drive axle and the friction-reducing shims can be calculated. Finally, based on the aforementioned normal loads and sliding speeds, the wear amount of the friction-reducing shim coating can be calculated. The wear amount of the friction-reducing shim coating is compared with a wear threshold to determine whether a user needs to be reminded to perform maintenance. This solves the technical problem of difficulty in providing early warning processing for the lifespan of friction-reducing shims, achieving the technical effect of providing early warning processing for the lifespan of friction-reducing shims.

[0113] Example 3

[0114] According to an embodiment of the present invention, a performance testing device for friction-reducing gaskets is also provided. It should be noted that this performance testing device for friction-reducing gaskets can be used to perform a performance testing method for friction-reducing gaskets as described in Embodiment 1.

[0115] Figure 4 This is a schematic diagram of a performance testing device for a friction-reducing gasket according to an embodiment of the present invention. Figure 4 As shown, a performance testing device 400 for a friction-reducing gasket may include: an acquisition unit 401, a first determination unit 402, a second determination unit 403, a third determination unit 404, and an output unit 405.

[0116] The acquisition unit 401 is used to acquire the vehicle's power parameters and preset parameters, wherein the power parameters are used to characterize the vehicle's driving state information, and the preset parameters are used to characterize the vehicle's component information.

[0117] The first determining unit 402 is used to determine the normal load of the vehicle on the friction-reducing pad based on the power parameters and preset parameters.

[0118] The second determining unit 403 is used to determine the sliding speed of the vehicle's drive shaft and the anti-friction pad based on the normal load.

[0119] The third determining unit 404 is used to determine the amount of wear of the coating of the friction-reducing pad based on the normal load and sliding speed.

[0120] Output unit 405 is used to output early warning information for friction-reducing pads based on wear amount, wherein the early warning information is used to characterize that the friction-reducing pads are in a state of impending failure.

[0121] Optionally, the first determining unit 402 may include: a first determining module for determining a first normal load corresponding to the lateral acceleration and the weight of the front axle, wherein the first normal load is used to characterize the normal load of the vehicle on the front drive axle friction-reducing pad; and a second determining module for determining a second normal load corresponding to the lateral acceleration and the weight of the rear axle, wherein the second normal load is used to characterize the normal load of the vehicle on the rear drive axle friction-reducing pad.

[0122] Optionally, the second determining unit 403 may include: a third determining module, used to determine the first sliding speed according to the mapping relationship between the first normal load, the friction coefficient and the first sliding speed, wherein the first sliding speed is used to characterize the sliding speed of the front drive shaft of the vehicle and the front drive shaft anti-friction pad; and a fourth determining module, used to determine the second sliding speed according to the mapping relationship between the second normal load, the friction coefficient and the second sliding speed, wherein the second sliding speed is used to characterize the sliding speed of the rear drive shaft of the vehicle and the rear drive shaft anti-friction pad.

[0123] Optionally, the third determining unit 404 may include: a fifth determining module, used to determine the wear amount of the coating of the first friction-reducing pad according to the mapping relationship between the first normal load, the first sliding speed and the wear amount of the coating of the first friction-reducing pad, wherein the first friction-reducing pad is used to characterize the friction-reducing pad disposed at the front drive shaft of the vehicle; and a sixth determining module, used to determine the wear amount of the coating of the second friction-reducing pad according to the mapping relationship between the second normal load, the second sliding speed and the wear amount of the coating of the second friction-reducing pad, wherein the second friction-reducing pad is used to characterize the friction-reducing pad disposed at the rear drive shaft of the vehicle.

[0124] Optionally, the output unit 405 may include: a first response module, configured to output a warning message for the first friction-reducing pad in response to the wear amount of the coating of the first friction-reducing pad being greater than or equal to a wear threshold; and a second response module, configured to output a warning message for the second friction-reducing pad in response to the wear amount of the coating of the second friction-reducing pad being greater than or equal to a wear threshold.

[0125] Optionally, the performance testing device 400 for the friction-reducing pad may further include: an uploading unit for uploading the wear amount of the coating of the first friction-reducing pad and / or the wear amount of the coating of the second friction-reducing pad to a cloud platform.

[0126] In this embodiment, an acquisition unit is used to acquire the vehicle's power parameters and preset parameters, wherein the power parameters are used to characterize the vehicle's driving state information, and the preset parameters are used to characterize the vehicle's component information; a first determination unit is used to determine the normal load of the vehicle on the friction-reducing pad based on the power parameters and preset parameters; a second determination unit is used to determine the sliding speed of the vehicle's drive shaft sliding with the friction-reducing pad based on the normal load; a third determination unit is used to determine the wear amount of the coating of the friction-reducing pad based on the normal load and sliding speed; and an output unit is used to output early warning information for the friction-reducing pad based on the wear amount, wherein the early warning information is used to characterize that the friction-reducing pad is in a state of impending failure, thus solving the technical problem of difficulty in providing early warning processing for the lifespan of the friction-reducing pad and achieving the technical effect of providing early warning processing for the lifespan of the friction-reducing pad.

[0127] Example 4

[0128] According to an embodiment of the present invention, a computer-readable storage medium is also provided, the storage medium including a stored program, wherein the program executes the performance testing method for the friction-reducing gasket in Embodiment 1.

[0129] Example 5

[0130] According to an embodiment of the present invention, a processor is also provided for running a program, wherein the program is executed by the processor to perform the performance testing method for the friction-reducing gasket in Embodiment 1.

[0131] Example 6

[0132] According to an embodiment of the present invention, a vehicle is also provided for performing any of the performance testing methods for friction-reducing pads in Embodiment 1.

[0133] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0134] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0135] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between units or modules may be electrical or other forms.

[0136] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0137] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0138] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0139] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for testing the performance of a friction-reducing gasket, characterized in that, include: The vehicle's power parameters and preset parameters are obtained, wherein the power parameters are used to characterize the vehicle's driving state information, and the preset parameters are used to characterize the vehicle's component information. The power parameters include at least one of the following: lateral acceleration, longitudinal acceleration, and power system torque, and the preset parameters include at least one of the following: front axle weight, rear axle weight, and coefficient of friction. Based on the power parameters and the preset parameters, the normal load of the vehicle on the friction-reducing pad is determined; Based on the normal load, the sliding speed of the vehicle's drive shaft sliding with the friction-reducing pad is determined; The wear amount of the coating of the friction-reducing pad is determined based on the normal load and the sliding speed. Based on the wear amount, a warning message for the friction-reducing pad is output, wherein the warning message is used to indicate that the friction-reducing pad is in a state of impending failure; The normal load includes a first normal load and a second normal load, and the friction-reducing pads include a front drive axle friction-reducing pad and a rear drive axle friction-reducing pad. Determining the normal load of the vehicle on the friction-reducing pads based on the power parameters and the preset parameters includes: determining the first normal load based on the lateral acceleration, the front axle weight, and the normal load of the vehicle on the front drive axle friction-reducing pad; and determining the second normal load based on the lateral acceleration, the rear axle weight, and the normal load of the vehicle on the rear drive axle friction-reducing pad. The method further includes: determining whether to output the warning information based on the relationship between the wear amount and the wear threshold, wherein the wear threshold is determined by the following formula: ; in, D Used to characterize the outer diameter of the friction-reducing gasket. d The inner diameter of the friction-reducing gasket is used to characterize the inner diameter of the friction-reducing gasket, t is used to characterize the coating thickness of the friction-reducing gasket, and ρ is used to characterize the coating density of the friction-reducing gasket.

2. The method according to claim 1, characterized in that, Determining the vehicle's sliding speed based on the normal load includes: The first sliding speed is determined according to the mapping relationship between the first normal load, the friction coefficient and the first sliding speed, wherein the first sliding speed is used to characterize the sliding speed of the front drive shaft of the vehicle and the front drive shaft anti-friction pad. The second sliding speed is determined according to the mapping relationship between the second normal load, the friction coefficient and the second sliding speed, wherein the second sliding speed is used to characterize the sliding speed of the rear drive shaft of the vehicle and the rear drive shaft anti-friction pad.

3. The method according to claim 2, characterized in that, Determining the wear amount of the coating on the friction-reducing pad based on the normal load and the sliding speed includes: The wear amount of the coating of the first friction-reducing pad is determined according to the mapping relationship between the first normal load, the first sliding speed and the wear amount of the coating of the first friction-reducing pad, wherein the first friction-reducing pad is used to characterize the friction-reducing pad disposed at the front drive shaft of the vehicle. The wear amount of the coating of the second friction-reducing pad is determined according to the mapping relationship between the second normal load, the second sliding speed and the wear amount of the coating of the second friction-reducing pad, wherein the second friction-reducing pad is used to characterize the friction-reducing pad disposed at the rear drive shaft of the vehicle.

4. The method according to claim 3, characterized in that, Based on the wear amount, a warning message for the friction-reducing pad is output, including: In response to the wear amount of the coating of the first friction-reducing pad being greater than or equal to the wear threshold, a warning message for the first friction-reducing pad is output. In response to the wear amount of the coating of the second friction-reducing pad being greater than or equal to the wear threshold, a warning message for the second friction-reducing pad is output.

5. The method according to claim 4, after outputting the warning information for the friction-reducing pad based on the wear amount, the method further includes: The wear amount of the coating of the first friction-reducing pad and / or the wear amount of the coating of the second friction-reducing pad are uploaded to the cloud platform.

6. A performance testing device for friction-reducing gaskets, characterized in that, include: An acquisition unit is used to acquire the vehicle's power parameters and preset parameters, wherein the power parameters are used to characterize the vehicle's driving state information, and the preset parameters are used to characterize the vehicle's component information. The power parameters include at least one of the following: lateral acceleration, longitudinal acceleration, and power system torque, and the preset parameters include at least one of the following: front axle weight, rear axle weight, and friction coefficient. The first determining unit is used to determine the normal load of the vehicle on the friction-reducing pad based on the power parameters and the preset parameters. The second determining unit is used to determine the sliding speed of the vehicle's drive shaft sliding with the friction-reducing pad based on the normal load. The third determining unit is used to determine the amount of wear of the coating of the friction-reducing pad based on the normal load and the sliding speed. An output unit is configured to output a warning message for the friction-reducing pad based on the wear amount, wherein the warning message is used to indicate that the friction-reducing pad is in a state of impending failure; The normal load includes a first normal load and a second normal load, and the friction-reducing pads include a front drive axle friction-reducing pad and a rear drive axle friction-reducing pad. The first determining unit is further configured to perform the following steps: determining the first normal load based on the lateral acceleration, the front axle weight, and the normal load of the vehicle on the front drive axle friction-reducing pad; and determining the second normal load based on the lateral acceleration, the rear axle weight, and the normal load of the vehicle on the rear drive axle friction-reducing pad. The performance testing device for the friction-reducing pad is further configured to perform the following steps: based on the relationship between the wear amount and the wear threshold, determine whether to output the warning information, wherein the wear threshold is determined by the following formula: ; in, D Used to characterize the outer diameter of the friction-reducing gasket. d The inner diameter of the friction-reducing gasket is used to characterize the inner diameter of the friction-reducing gasket, t is used to characterize the coating thickness of the friction-reducing gasket, and ρ is used to characterize the coating density of the friction-reducing gasket.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the performance testing method for the friction-reducing gasket according to any one of claims 1 to 5.

8. A processor, characterized in that, The processor is used to run a program, wherein the program is executed by the processor to perform the performance testing method for the friction-reducing gasket according to any one of claims 1 to 5.

9. A vehicle, characterized in that, The vehicle is used to perform the performance testing method for the friction-reducing pads according to any one of claims 1 to 5.

Images