Vehicle part durability test method and device

Abstract

The invention discloses a vehicle part durability test method and device, and relates to the technical field of vehicles. The specific implementation mode of the method comprises the steps that multiple torque values output by a vehicle motor in a continuous time period and collected in the actual driving process of a vehicle and the corresponding implementation time of the multiple torque values are obtained; multiple pairs of specific torque values are extracted from the multiple torque values, and time intervals corresponding to the multiple pairs of specific torque values are calculated according to implementation time corresponding to the multiple pairs of specific torque values; according to the plurality of pairs of specific torque values, the calculated plurality of time intervals and a torque limit value corresponding to the test equipment, determining a parameter of a loading torque for the to-be-tested component; and outputting the parameter to test equipment, so that the test equipment tests the component to be tested according to the parameter. According to the embodiment of the invention, the test condition better accords with the actual working condition of the operation of the to-be-tested component, so that the reliability of the test result of the to-be-tested component is higher, and the condition that the performance or service life of the to-be-tested component deviates from expectation in the subsequent use process is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle testing, and in particular to a vehicle component durability testing method and device. Background Art

[0002] Before leaving the factory, vehicle parts generally need to undergo durability verification to ensure that the performance and life of each part after vehicle assembly meet expectations. However, whether the vehicle parts can meet expectations depends on whether the test conditions of the durability test meet the actual operating conditions of the vehicle parts. If the test conditions deviate greatly from the actual operating conditions, the reliability of the corresponding durability test results will be reduced accordingly. Therefore, vehicle parts may deviate from expectations during use, such as poor wear resistance, abnormal noise, and frequent replacement, resulting in a poor vehicle experience for vehicle users. Summary of the invention

[0003] In view of this, an embodiment of the present invention provides a vehicle component durability testing method and device, which collects the torque value applied by the vehicle motor to the component to be tested and its corresponding implementation time during the actual driving condition of the vehicle, extracts multiple pairs of specific torque values ​​and their corresponding time intervals from the multiple torque values, and combines the torque limit value corresponding to the test equipment, as well as the multiple specific torque values ​​and their corresponding time intervals, to determine and output the parameters of the loading torque for the component to be tested, so that the experimental equipment can test the component to be tested according to the parameters, thereby making the test conditions more in line with the actual operating conditions of the component to be tested, thereby making the test results of the component to be tested more credible, and reducing the situation where the performance or life of the component to be tested deviates from expectations during subsequent use.

[0004] To achieve the above objective, according to one aspect of an embodiment of the present invention, a vehicle component durability testing method is provided.

[0005] A vehicle component durability testing method according to an embodiment of the present invention includes:

[0006] Acquire multiple torque values ​​output by the vehicle motor in a continuous time period and their corresponding implementation times collected during the actual driving process of the vehicle;

[0007] Extracting a plurality of pairs of specific torque values ​​from the plurality of torque values, and calculating the time intervals corresponding to the plurality of pairs of specific torque values ​​according to the implementation times corresponding to the plurality of pairs of specific torque values;

[0008] Determine the parameters of the loading torque for the component to be tested according to the multiple pairs of the specific torque values, the multiple calculated time intervals and the torque limit values ​​corresponding to the test equipment;

[0009] The parameters are output to the test equipment so that the test equipment tests the component under test according to the parameters.

[0010] Optionally, extracting a plurality of pairs of specific moment values ​​from the plurality of moment values ​​comprises:

[0011] Determining, from the implementation times corresponding to the plurality of torque values, a plurality of time points at which the torque value changes from a positive value to a negative value;

[0012] The maximum value and the minimum value closest to each of the time points are extracted.

[0013] Optionally, determining the parameters of the loading torque for the component to be tested includes:

[0014] Using each pair of the specific torque values ​​and their corresponding time intervals, calculating the change rate corresponding to each pair of the specific torque values;

[0015] Determine a pair of specific torque values ​​with the largest corresponding change rate among the multiple pairs of specific torque values ​​as the target specific torque value;

[0016] The parameters of the loading torque for the component to be tested are determined in combination with the target specific torque value, the torque limit value corresponding to the test equipment, and the rate of change corresponding to the target specific torque value.

[0017] Optionally, determining the parameters of the loading torque for the component to be tested includes:

[0018] The maximum value among the target specific torque values ​​is compared with the maximum torque within the working torque range of the test equipment. When the comparison result indicates that the maximum value is greater than the maximum torque, the maximum torque is determined as the first parameter for the loading torque of the component to be tested; otherwise, the maximum value is determined as the first parameter for the loading torque of the component to be tested.

[0019] Optionally, the determining of the parameters of the loading torque for the component to be tested further includes:

[0020] The minimum value among the target specific torque values ​​is compared with the minimum torque of the working torque range of the test equipment. When the comparison result indicates that the minimum value is greater than the minimum torque, the minimum value is determined to be the second parameter for the loading torque of the component to be tested; otherwise, the minimum torque is determined to be the second parameter for the loading torque of the component to be tested.

[0021] Optionally, determining the parameters of the loading torque for the component to be tested includes:

[0022] The rate of change corresponding to the target specific torque value is compared with the maximum rate of torque loading of the test equipment. When the comparison result indicates that the rate of change is greater than the maximum rate, the maximum rate is determined as the third parameter for the torque loaded on the component to be tested; otherwise, the rate of change is determined as the third parameter for the torque loaded on the component to be tested.

[0023] Optionally, generating a torque loading curve according to the parameters, and outputting the parameters to the test device includes: outputting the torque loading curve to the test device.

[0024] Optionally, a plurality of torque values ​​output by the vehicle motor and their corresponding implementation times during the driving of the vehicle are collected through an on-board diagnostic system tool.

[0025] To achieve the above objective, according to another aspect of an embodiment of the present invention, a vehicle component durability testing device is provided.

[0026] A vehicle component durability testing device according to an embodiment of the present invention comprises:

[0027] A data acquisition module, used to acquire multiple torque values ​​output by the vehicle motor in a continuous time period and their corresponding implementation times collected during the actual driving process of the vehicle;

[0028] A data analysis module, for extracting a plurality of pairs of specific torque values ​​from the plurality of torque values, and calculating the time intervals corresponding to the plurality of pairs of specific torque values ​​according to the implementation times corresponding to the plurality of pairs of specific torque values; and for determining the parameters of the loading torque for the component to be tested according to the plurality of pairs of specific torque values, the calculated plurality of time intervals and the torque limit values ​​corresponding to the test equipment;

[0029] The parameter output module is used to output the parameters to the test equipment so that the test equipment tests the component to be tested according to the parameters.

[0030] To achieve the above objective, according to another aspect of an embodiment of the present invention, an electronic device for durability testing of vehicle components is provided.

[0031] An electronic device for durability testing of vehicle components according to an embodiment of the present invention comprises: one or more processors; a storage device for storing one or more programs, and when the one or more programs are executed by the one or more processors, the one or more processors implement a vehicle component durability testing method according to an embodiment of the present invention.

[0032] To achieve the above objective, according to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided.

[0033] A computer-readable storage medium according to an embodiment of the present invention stores a computer program, and when the program is executed by a processor, a vehicle component durability testing method according to an embodiment of the present invention is implemented.

[0034] One embodiment of the above invention has the following advantages or beneficial effects: by collecting the torque value applied by the vehicle motor to the component to be tested and its corresponding implementation time during the actual driving condition of the vehicle, multiple pairs of specific torque values ​​and their corresponding time intervals are extracted from the multiple torque values, and the torque limit value corresponding to the test equipment, multiple specific torque values ​​and their corresponding time intervals are combined to determine and output the parameters of the loading torque for the component to be tested, so that the experimental equipment can test the component to be tested according to the parameters, thereby making the test conditions more in line with the actual operating conditions of the component to be tested, thereby making the test results of the component to be tested more credible, and reducing the situation where the performance or life of the component to be tested deviates from expectations during subsequent use.

[0035] The further effects of the above-mentioned non-conventional optional manner will be described below in conjunction with the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to better understand the present invention and do not constitute an improper limitation of the present invention.

[0037] Figure 1 is a schematic diagram of main steps of a vehicle component durability testing method according to an embodiment of the present invention;

[0038] Figure 2 is a schematic diagram of an automobile half-axle and its anti-friction coating subjected to a durability test according to an embodiment of the present invention;

[0039] Figure 3 is a curve showing the relationship between the motor output torque value and its implementation time collected under the actual driving condition of the vehicle according to an embodiment of the present invention;

[0040] Figure 4 is a curve showing the relationship between the motor output torque value and its implementation time corresponding to an intense driving under the actual driving condition of the vehicle according to an embodiment of the present invention;

[0041] Figure 5 is a schematic diagram of determining a reference position point for an intense driving event on a relationship curve according to an embodiment of the present invention;

[0042] Figure 6 is a moment loading curve according to an embodiment of the present invention;

[0043] Figure 7 is another moment loading curve according to an embodiment of the present invention;

[0044] Figure 8is a schematic diagram of main steps of another vehicle component durability testing method according to an embodiment of the present invention;

[0045] Fig. 9 is a schematic diagram of main modules of a vehicle component durability testing device according to an embodiment of the present invention;

[0046] Fig.10 is an exemplary system architecture diagram to which embodiments of the present invention may be applied;

[0047] Fig.11 It is a schematic diagram of the structure of a computer system of a terminal device or a server suitable for implementing an embodiment of the present invention. DETAILED DESCRIPTION

[0048] The following is a description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0049] It should be pointed out that the embodiments of the present invention and the technical features therein may be combined with each other without conflict.

[0050] Figure 1 Schematic diagram of main steps of a vehicle component durability testing method according to an embodiment of the present invention.

[0051] like Figure 1 As shown, the vehicle component durability testing method of the embodiment of the present invention mainly includes steps S101-S104:

[0052] Step S101, obtaining multiple torque values ​​and their corresponding implementation times output by the vehicle motor in a continuous time period collected during the actual driving process of the vehicle. In order to improve the reliability and credibility of the durability test of vehicle components, the test parameters can be determined according to the actual operating condition data of the vehicle components. The component to be tested in the embodiment of the present invention can be an automobile half shaft, and the durability test is specifically to test the anti-friction coating (such as Figure 2 The wear resistance of the wear-resistant coating on the axle of the automobile is tested to determine whether the wear resistance of the wear-resistant coating on the axle of the automobile meets the test standard. It is understandable that the components to be tested are not limited to the axle of the automobile, but can also be the chassis of the vehicle, the suspension system, etc.

[0053] The test vehicle is driven on the road, and the torque data output by the motor during the driving process is collected, and it is ensured that the driving process includes multiple intense driving operations, such as changing from rapid acceleration to rapid deceleration in a short time, or from rapid deceleration to rapid acceleration in a short time, etc., so as to ensure that the process data of the motor output torque changing from the positive maximum value to the negative maximum value can be collected. According to the torque data output by the motor under the extreme working conditions of actual driving, the parameters of the test equipment for loading the torque on the component to be tested are determined. The component to be tested is tested using the parameters corresponding to the actual extreme working conditions, and the performance or life of the component to be tested is determined according to the test results. For example, the results of the durability test show that the anti-friction coating can withstand 10 test torque impacts, and the anti-friction coating of the automobile half shaft in the actual working conditions has such a torque impact once a month on average, so that the expected life of the anti-friction coating can be converted to about 10 months. Among them, "10 times" and "1 time" are both examples, not real values. The embodiment of the present invention allows the durability test to meet the actual working conditions while shortening the time consumed by the durability test, thereby improving the efficiency of the durability test.

[0054] In an optional embodiment of the present invention, multiple torque values ​​output by the vehicle motor and their corresponding implementation times during the vehicle driving process are collected through an on-board diagnostic system tool. The collected torque values ​​and their corresponding implementation times are all discrete values. In order to facilitate the observation of the torque change value within the collected period, a curve chart on a two-dimensional coordinate axis can be generated based on the collected torque values ​​and their corresponding implementation times. Figure 3 shown. Figure 3 The figure shows a part of the collected data, which includes an intense driving operation, that is, a change from rapid acceleration to rapid deceleration in a short period of time. The change from rapid acceleration to rapid deceleration is from the maximum value of the motor output torque during acceleration, that is, Tmax, to the maximum value of the motor output torque during deceleration, that is, -Tmin (because the acceleration torque output by the motor is in the opposite direction to the deceleration torque, when Tmax is positive, Tmin is negative), twindow is the time interval between Tmax and Tmin, as shown in Figure 1. Figure 4 shown.

[0055] Step S102, extracting multiple pairs of specific torque values ​​from the multiple torque values, and calculating the time intervals corresponding to the multiple pairs of specific torque values ​​according to the implementation times corresponding to the multiple pairs of specific torque values. Among them, one pair of specific torque values ​​corresponds to one intense driving operation, and multiple pairs of specific torque values ​​correspond to multiple intense driving operations. And a pair of specific torque values ​​includes the maximum value and the minimum value of the motor output torque, and the time interval between the implementation times corresponding to the maximum value and the minimum value is the time interval corresponding to the pair of specific torque values. Reference Figure 4In the formula, Tmax and Tmin are a pair of specific torque values, and twindow is the time interval corresponding to the pair of specific torque values.

[0056] In an optional embodiment of the present invention, extracting multiple pairs of specific torque values ​​from the multiple torque values ​​includes: determining multiple time points at which the torque value changes from a positive value to a negative value from the implementation time corresponding to the multiple torque values; extracting the maximum value and the minimum value closest to each time point. Specifically, finding the torque value equal to zero and its corresponding implementation time from the multiple torque values, referring to Figure 5 At the position indicated by B, find the peak value (positive value) and valley value (negative value) with the closest time distance before and after the implementation time corresponding to the torque value equal to zero. In addition, find two adjacent torque values ​​from multiple torque values, one is positive and the other is negative, and the implementation time corresponding to the two adjacent torque values, and find the peak value (positive value) and valley value (positive value) with the closest time distance before and after the implementation time corresponding to the two adjacent torque values. A peak value and a corresponding valley value are a pair of specific torque values, which correspond to an intense driving operation. Please refer to Figure 4 , the peak value is Tmax, and the valley value is Tmin.

[0057] Step S103, determining the parameters for loading the torque on the component to be tested according to the multiple pairs of the specific torque values, the multiple calculated time intervals, and the torque limit values ​​corresponding to the test equipment. Screen out the intense driving operation with the largest torque impact according to the maximum and minimum torque values ​​corresponding to the multiple intense driving operations and the interval time between the two values. Compare the torque value and the torque loading rate corresponding to the intense driving operation with the largest torque impact with the torque limit value of the test equipment to determine the torque value and the torque loading rate of the torque loaded by the test equipment on the component to be tested, thereby ensuring that the torque loading parameters of the test equipment are closer to the actual working conditions, and at the same time ensuring that the torque loading parameters do not exceed the torque loading limit of the test equipment, thereby protecting the test equipment.

[0058] In an optional embodiment of the present invention, the determination of the parameters for the loading torque of the component to be tested includes: using each pair of the specific torque values ​​and their corresponding time intervals, calculating the change rate corresponding to each pair of the specific torque values; determining a pair of specific torque values ​​with the largest corresponding change rate among multiple pairs of the specific torque values ​​as the target specific torque value; combining the target specific torque value, the torque limit value corresponding to the test equipment, and the change rate corresponding to the target specific torque value, to determine the parameters for the loading torque of the component to be tested. For each pair of specific torque values, the difference between the maximum value and the minimum value is calculated, and the change rate of the torque within the time interval is calculated using the difference and the time interval, and the change rate is the change rate corresponding to the pair of specific torque values. The maximum change rate is determined from the multiple change rates corresponding to the multiple pairs of specific torque values, and the pair of specific torque values ​​corresponding to the maximum change rate is determined as the target specific torque value, that is, the maximum and minimum torque values ​​corresponding to the intense driving operation with the largest torque impact. The parameters of the test equipment for loading torque on the component to be tested are determined according to the target specific torque value, the maximum rate of change and the torque limit value of the test equipment.

[0059] In an optional embodiment of the present invention, the determination of the parameters for the loading torque of the component to be tested includes: comparing the maximum value of the target specific torque value with the maximum torque of the working torque range of the test equipment, and when the comparison result indicates that the maximum value is greater than the maximum torque, determining the maximum torque as the first parameter for the loading torque of the component to be tested; otherwise, determining the maximum value as the first parameter for the loading torque of the component to be tested. In order to ensure that the determined torque loading parameter does not exceed the loading capacity of the test equipment, thereby protecting the test equipment, the maximum value of the target specific torque value is compared with the maximum torque that the test equipment can output, and the smaller one is selected as the maximum torque of the test equipment for the loading torque of the component to be tested. For example, if the maximum value of the target specific torque value is 10Nm, and the maximum torque that the test equipment can output is 8Nm, 8Nm is used as the maximum torque for the loading torque of the component to be tested.

[0060] In an optional embodiment of the present invention, the determination of the parameters for the loading torque of the component to be tested also includes: comparing the minimum value in the target specific torque value with the minimum torque of the working torque range of the test equipment, and when the comparison result indicates that the minimum value is greater than the minimum torque, determining the minimum value as the second parameter for the loading torque of the component to be tested; otherwise, determining the minimum torque as the second parameter for the loading torque of the component to be tested. Similarly, in order to ensure that the determined torque loading parameter does not exceed the loading capacity of the test equipment, thereby protecting the test equipment, the minimum value in the target specific torque value is compared with the minimum torque that the test equipment can output, and the larger one is selected as the minimum torque of the test equipment for the loading torque of the component to be tested. For example, if the minimum value in the target specific torque value is -10Nm, and the minimum torque that the test equipment can output is -8Nm, then -8Nm is used as the minimum torque for the loading torque of the component to be tested.

[0061] In an optional embodiment of the present invention, the determination of the parameters for the loading torque of the component to be tested further includes: comparing the rate of change corresponding to the target specific torque value with the maximum rate of torque loading of the test equipment, and when the comparison result indicates that the rate of change is greater than the maximum rate, determining the maximum rate as the third parameter for the loading torque of the component to be tested; otherwise, determining the rate of change as the third parameter for the loading torque of the component to be tested. Similarly, in order to ensure that the determined torque loading parameter does not exceed the loading capacity of the test equipment, thereby protecting the test equipment, the rate of change corresponding to the target specific torque value is compared with the maximum rate of the loading torque of the test equipment, and the smaller one is selected as the maximum rate of the loading torque of the component to be tested by the test equipment. For example, if the rate of change corresponding to the target specific torque value is 5Nm / s, and the maximum rate of the loading torque of the test equipment is 6Nm / s, 5Nm / s is used as the maximum rate of the loading torque of the component to be tested.

[0062] Step S104, outputting the parameters to the test equipment so that the test equipment tests the component to be tested according to the parameters. After determining the parameters of the torque applied by the test equipment to the component to be tested, such as the maximum torque value, the minimum torque value, and the rate of change, the parameters are output to the test equipment so that the test equipment applies torque to the component to be tested at a determined rate of change, so that the maximum torque applied is equal to the determined maximum torque value and the minimum torque applied is equal to the determined minimum torque value.

[0063] In an optional embodiment of the present invention, generating a torque loading curve according to the parameters and outputting the parameters to the test device comprises: outputting the torque loading curve to the test device. Generating a torque loading curve according to the parameters of the test device for loading the torque on the component to be tested, the curve can be Figure 6 The non-continuous trapezoidal wave shown, where k refers to the rate of moment loading; the curve can also be Figure 7 The continuous triangular wave shown, where k refers to the rate of moment loading.

[0064] It should be noted that the torque values, speed values, etc. described in the specification and drawings are only examples and not real values, and they should not limit the scope of protection.

[0065] The vehicle component durability testing method is described in detail below through a specific embodiment.

[0066] like Figure 8 As shown, the vehicle component durability test method mainly includes the following steps:

[0067] Step S801, obtaining a plurality of torque values ​​output by the vehicle motor in a continuous time period and their corresponding implementation times collected during the actual driving process of the vehicle.

[0068] Step S802: determining, from the implementation times corresponding to the multiple torque values, multiple time points at which the torque value changes from a positive value to a negative value.

[0069] Step S803, extracting the maximum value and the minimum value closest to each of the time points to obtain multiple pairs of specific torque values.

[0070] Step S804, calculating the time intervals corresponding to the multiple pairs of the specific torque values ​​according to the implementation times corresponding to the multiple pairs of the specific torque values.

[0071] Step S805, using each pair of the specific torque values ​​and their corresponding time intervals, calculate the change rate corresponding to each pair of the specific torque values.

[0072] Step S806: Determine, among the multiple pairs of the specific torque values, a pair of specific torque values ​​corresponding to the largest rate of change as the target specific torque values.

[0073] Step S807: Determine the smaller one of the maximum value of the target specific torque value and the maximum torque of the working torque range of the test equipment as the maximum value of the loading torque for the component to be tested.

[0074] Step S808: Determine the larger one of the minimum value of the target specific torque value and the minimum torque of the working torque range of the test equipment as the minimum value of the loading torque for the component to be tested.

[0075] Step S809: Determine the smaller one of the change rate corresponding to the target specific torque value and the maximum rate of torque loading of the test equipment as the maximum rate of loading torque on the component to be tested.

[0076] Step S810: generating a torque loading curve according to the maximum value, the minimum value and the maximum rate of the loading torque of the test component.

[0077] Step S811, outputting the torque loading curve to multiple test devices, so that the multiple test devices can test different components to be tested, such as automobile half-axles, vehicle chassis, shock absorbing springs and suspension arms in the suspension system, etc.

[0078] The vehicle component durability testing method of the embodiment of the present invention collects the torque value applied by the vehicle motor to the component to be tested and the corresponding implementation time during the actual driving condition of the vehicle, extracts multiple pairs of specific torque values ​​and their corresponding time intervals from the multiple torque values, combines the torque limit value corresponding to the test equipment, and the multiple specific torque values ​​and their corresponding time intervals, determines and outputs the parameters of the loading torque for the component to be tested, so that the experimental equipment tests the component to be tested according to the parameters, thereby making the test conditions more in line with the actual operating conditions of the component to be tested, thereby making the test results of the component to be tested more credible, and reducing the situation where the performance or life of the component to be tested deviates from expectations during subsequent use.

[0079] Fig. 9 Schematic diagram of main modules of a vehicle component durability testing device according to an embodiment of the present invention.

[0080] like Fig. 9 As shown, the vehicle component durability testing device 900 of the embodiment of the present invention includes:

[0081] The data acquisition module 901 is used to acquire multiple torque values ​​output by the vehicle motor in a continuous time period and their corresponding implementation time collected during the actual driving process of the vehicle;

[0082] The data analysis module 902 is used to extract multiple pairs of specific torque values ​​from the multiple torque values, and calculate the time intervals corresponding to the multiple pairs of specific torque values ​​according to the implementation times corresponding to the multiple pairs of specific torque values; and is also used to determine the parameters of the loading torque for the component to be tested according to the multiple pairs of specific torque values, the calculated multiple time intervals and the torque limit values ​​corresponding to the test equipment;

[0083] The parameter output module 903 is used to output the parameters to the test equipment so that the test equipment tests the component to be tested according to the parameters.

[0084] In an optional embodiment of the present invention, the data analysis module 902 is also used to determine, from the implementation times corresponding to the multiple torque values, multiple time points at which the torque value changes from a positive value to a negative value; and extract the maximum value and the minimum value closest to each of the time points.

[0085] In an optional embodiment of the present invention, the data analysis module 902 is also used to calculate the change rate corresponding to each pair of the specific torque values ​​and their corresponding time intervals; determine a pair of specific torque values ​​with the largest corresponding change rate among multiple pairs of the specific torque values ​​as the target specific torque value; and determine the parameters of the loading torque for the component to be tested in combination with the target specific torque value, the torque limit value corresponding to the test equipment, and the change rate corresponding to the target specific torque value.

[0086] In an optional embodiment of the present invention, the data analysis module 902 is also used to compare the maximum value of the target specific torque value with the maximum torque of the working torque range of the test equipment, and when the comparison result indicates that the maximum value is greater than the maximum torque, the maximum torque is determined as the first parameter of the loading torque for the component to be tested; otherwise, the maximum value is determined as the first parameter of the loading torque for the component to be tested.

[0087] In an optional embodiment of the present invention, the data analysis module 902 is also used to compare the minimum value of the target specific torque value with the minimum torque of the working torque range of the test equipment, and when the comparison result indicates that the minimum value is greater than the minimum torque, determine the minimum value as the second parameter of the loading torque for the component to be tested; otherwise, determine the minimum torque as the second parameter of the loading torque for the component to be tested.

[0088] In an optional embodiment of the present invention, the data analysis module 902 is also used to compare the change rate corresponding to the target specific torque value with the maximum rate of torque loading of the test equipment. When the comparison result indicates that the change rate is greater than the maximum rate, the maximum rate is determined as the third parameter for the loading torque of the component to be tested; otherwise, the change rate is determined as the third parameter for the loading torque of the component to be tested.

[0089] In an optional embodiment of the present invention, the parameter output module 903 is further used to generate a torque loading curve according to the parameters, and output the parameters to the test device, including: outputting the torque loading curve to the test device.

[0090] In an optional embodiment of the present invention, a plurality of torque values ​​output by the motor of the vehicle and their corresponding implementation times are collected during the driving process of the vehicle through an on-board diagnostic system tool.

[0091] The vehicle component durability testing device of the embodiment of the present invention collects the torque value applied by the vehicle motor to the component to be tested and the corresponding implementation time during the actual driving condition of the vehicle, extracts multiple pairs of specific torque values ​​and their corresponding time intervals from the multiple torque values, combines the torque limit value corresponding to the test equipment, and the multiple specific torque values ​​and their corresponding time intervals, determines and outputs the parameters of the loading torque for the component to be tested, so that the experimental equipment tests the component to be tested according to the parameters, thereby making the test conditions more in line with the actual operating conditions of the component to be tested, thereby making the test results of the component to be tested more credible, and reducing the situation where the performance or life of the component to be tested deviates from expectations during subsequent use.

[0092] Fig.10 An exemplary system architecture 1000 is shown to which a vehicle component durability testing method or a vehicle component durability testing device according to an embodiment of the present invention may be applied.

[0093] like Fig.10 As shown, the system architecture 1000 may include a data acquisition device 1001, a network 1002, and a test end controller 1003. The network 1002 is used to provide a medium for a communication link between the data acquisition device 1001 and the test end controller 1003. The network 1002 may include various connection types, such as wired, wireless communication links, or optical fiber cables, etc.

[0094] The user can use the test end controller 1003 to interact with the data acquisition device 1001 through the network 1002 to receive or send data, etc. The data acquisition device 1001 can be an on-board diagnostic system tool, or a device that supports data acquisition during vehicle driving, including but not limited to smart phones, tablet computers, laptops, desktop computers, etc. The test end controller 1003 can be a controller that provides various vehicle services.

[0095] It should be noted that the vehicle component durability testing method provided in the embodiment of the present invention can be executed by the test end controller 1003 , and accordingly, the vehicle component durability testing device can be arranged in the test end controller 1003 .

[0096] It should be understood that Fig.10 The number of data acquisition devices, networks and test end controllers in the embodiment is only for illustration. Any number of data acquisition devices, networks and test end controllers may be provided according to the implementation requirements.

[0097] Reference below Fig.11 , which shows a schematic diagram of the structure of a computer system 1100 of an electronic device suitable for implementing an embodiment of the present invention. Fig.11The data acquisition device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0098] like Fig.11 As shown, the computer system 1100 includes a central processing unit (CPU) 1101, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1102 or a program loaded from a storage part 1108 into a random access memory (RAM) 1103. In the RAM 1103, various programs and data required for the operation of the computer system 1100 are also stored. The CPU 1101, the ROM 1102, and the RAM 1103 are connected to each other via a bus 1104. An input / output (I / O) interface 1105 is also connected to the bus 1104.

[0099] The following components are connected to the I / O interface 1105: an input section 1106 including a keyboard, a mouse, etc.; an output section 1107 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 1108 including a hard disk, etc.; and a communication section 1109 including a network interface card such as a LAN card, a modem, etc. The communication section 1109 performs communication processing via a network such as the Internet. A drive 1110 is also connected to the I / O interface 1105 as needed. A removable medium 1111, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 1110 as needed, so that a computer program read therefrom is installed into the storage section 1108 as needed.

[0100] In particular, according to the embodiments disclosed in the present invention, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present invention include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part 1109, and / or installed from the removable medium 1111. When the computer program is executed by the central processing unit (CPU) 1101, the above-mentioned functions defined in the system of the present invention are executed.

[0101] It should be noted that the computer-readable medium shown in the present invention may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present invention, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device. In the present invention, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0102] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present invention. In this regard, each box in the flow chart or block diagram can represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flow chart, and the combination of the boxes in the block diagram or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0103] The modules involved in the embodiments of the present invention may be implemented by software or hardware. The modules described may also be arranged in a processor, for example, they may be described as: a processor including a data acquisition module, a data analysis module and a parameter output module. The names of these modules do not constitute a limitation on the modules themselves in certain cases, for example, the parameter output module may also be described as "a module that outputs the parameters to the test device".

[0104] As another aspect, the present invention also provides a computer-readable medium, which may be included in the device described in the above embodiment; or it may exist independently and not be assembled into the device. The above computer-readable medium carries one or more programs, and when the above one or more programs are executed by a device, the device includes: obtaining multiple torque values ​​and their corresponding implementation times output by the vehicle motor in a continuous time period collected during the actual driving process of the vehicle; extracting multiple pairs of specific torque values ​​from the multiple torque values, and calculating the time intervals corresponding to the multiple pairs of the specific torque values ​​according to the implementation times corresponding to the multiple pairs of the specific torque values; determining the parameters for loading the torque on the component to be tested according to the multiple pairs of the specific torque values, the calculated multiple time intervals and the torque limit values ​​corresponding to the test device; outputting the parameters to the test device so that the test device tests the component to be tested according to the parameters.

[0105] According to the technical solution of the embodiment of the present invention, by collecting the torque value applied by the vehicle motor to the component to be tested and its corresponding implementation time during the actual driving condition of the vehicle, multiple pairs of specific torque values ​​and their corresponding time intervals are extracted from the multiple torque values, and the torque limit value corresponding to the test equipment and the multiple specific torque values ​​and their corresponding time intervals are combined to determine and output the parameters of the loading torque for the component to be tested, so that the experimental equipment can test the component to be tested according to the parameters, thereby making the test conditions more in line with the actual operating conditions of the component to be tested, thereby making the test results of the component to be tested more credible, and reducing the situation where the performance or life of the component to be tested deviates from expectations during subsequent use.

[0106] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vehicle component durability testing method, characterized in that: include: Acquire multiple torque values ​​output by the vehicle motor in a continuous time period and their corresponding implementation times collected during the actual driving process of the vehicle; Extracting a plurality of pairs of specific torque values ​​from the plurality of torque values, and calculating the time intervals corresponding to the plurality of pairs of specific torque values ​​according to the implementation times corresponding to the plurality of pairs of specific torque values; Determine the parameters of the loading torque for the component to be tested according to the multiple pairs of the specific torque values, the multiple calculated time intervals and the torque limit values ​​corresponding to the test equipment; The parameters are output to the test equipment so that the test equipment tests the component under test according to the parameters.

2. The method according to claim 1, characterized in that: The step of extracting a plurality of pairs of specific moment values ​​from the plurality of moment values ​​comprises: Determining, from the implementation times corresponding to the plurality of torque values, a plurality of time points at which the torque value changes from a positive value to a negative value; The maximum value and the minimum value closest to each of the time points are extracted.

3. The method according to claim 1 or 2, wherein determining the parameters of the loading torque for the component to be tested comprises: Using each pair of the specific torque values ​​and their corresponding time intervals, calculating the change rate corresponding to each pair of the specific torque values; Determine a pair of specific torque values ​​with the largest corresponding change rate among the multiple pairs of specific torque values ​​as the target specific torque value; The parameters of the loading torque for the component to be tested are determined in combination with the target specific torque value, the torque limit value corresponding to the test equipment, and the rate of change corresponding to the target specific torque value.

4. The method according to claim 3, characterized in that The step of determining the parameters of the loading torque for the component to be tested includes: The maximum value among the target specific torque values ​​is compared with the maximum torque within the working torque range of the test equipment. When the comparison result indicates that the maximum value is greater than the maximum torque, the maximum torque is determined as the first parameter for the loading torque of the component to be tested; otherwise, the maximum value is determined as the first parameter for the loading torque of the component to be tested.

5. The method according to claim 3, characterized in that: The step of determining the parameters of the loading torque for the component to be tested further includes: The minimum value among the target specific torque values ​​is compared with the minimum torque of the working torque range of the test equipment. When the comparison result indicates that the minimum value is greater than the minimum torque, the minimum value is determined to be the second parameter for the loading torque of the component to be tested; otherwise, the minimum torque is determined to be the second parameter for the loading torque of the component to be tested.

6. The method according to claim 3, characterized in that The step of determining the parameters of the loading torque for the component to be tested includes: The rate of change corresponding to the target specific torque value is compared with the maximum rate of torque loading of the test equipment. When the comparison result indicates that the rate of change is greater than the maximum rate, the maximum rate is determined as the third parameter for the torque loaded on the component to be tested; otherwise, the rate of change is determined as the third parameter for the torque loaded on the component to be tested.

7. The method according to claim 1, characterized in that Also includes: Generating a torque loading curve according to the parameters, and outputting the parameters to the test equipment, including: outputting the torque loading curve to the test equipment; and / or, The multiple torque values ​​output by the vehicle motor and their corresponding implementation times during the driving of the vehicle are collected through an on-board diagnostic system tool.

8. A vehicle component durability testing device, characterized in that: include: A data acquisition module, used to acquire multiple torque values ​​output by the vehicle motor in a continuous time period and their corresponding implementation times collected during the actual driving process of the vehicle; A data analysis module, used to extract a plurality of pairs of specific torque values ​​from the plurality of torque values, and calculate the time intervals corresponding to the plurality of pairs of specific torque values ​​according to the implementation times corresponding to the plurality of pairs of specific torque values; It is also used to determine the parameters of the loading torque for the component to be tested according to the multiple pairs of the specific torque values, the calculated multiple time intervals and the torque limit values ​​corresponding to the test equipment; The parameter output module is used to output the parameters to the test equipment so that the test equipment tests the component to be tested according to the parameters.

9. An electronic device for durability testing of vehicle components, characterized in that: include: one or more processors; a storage device for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1 to 7.

10. A computer readable medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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