Road test load spectrum determination method, device, readable storage medium and electronic device

Abstract

The present invention discloses a method, device, readable storage medium and electronic device for determining a load spectrum of a road test. The method comprises: obtaining an original load spectrum of a road test, segmenting the original load spectrum according to each working condition in the original load spectrum to obtain a multi-segment original load spectrum; obtaining the damage of each signal channel under each working condition according to all signal channels of each working condition in the multi-segment original load spectrum; obtaining the total damage of each signal channel of the road test according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage proportion of each working condition under each signal channel; obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining the target cycle number of each working condition according to the damage proportion matrix and the total damage of each signal channel of the road test to determine the target load spectrum of the road test. The problem of long test time when conducting vehicle road tests in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a method and device for determining a road test load spectrum, a readable storage medium and an electronic device. Background Art

[0002] With the continuous development of society, cars have entered thousands of households, and each model will be subjected to road tests before production and shipment in order to obtain some important parameters of the vehicle and have a preliminary understanding and control of the vehicle's quality.

[0003] The automobile road simulation test uses remote data iteration technology to replicate the vibration process of a vehicle road test on a test bench for the whole vehicle or system assembly. At present, in order to ensure that the bench road simulation test is equivalent to the vehicle road test, the general practice is to directly use the road test target load spectrum for the bench road simulation test without excessive editing of the target signal. In this way, the test process can ensure that the vibration effects of the bench road simulation and the vehicle road test are the same, but at the same time, the test time of the road simulation test is also consistent with the time of the vehicle road test, which cannot achieve the purpose of accelerated testing and rapid verification.

[0004] The existing method for processing the load spectrum of road simulation tests is to remove the connecting pavement load spectrum, so that the total time of the road simulation test and the whole vehicle road test time are relatively reduced. However, the time reduced by removing the connecting pavement load spectrum is still relatively small, resulting in a relatively long test time. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a method, device, readable storage medium and vehicle for determining a road test load spectrum, aiming to solve the problem of poor vehicle experience for passengers in the prior art.

[0006] The embodiment of the present invention is implemented as follows:

[0007] A method for determining a road test load spectrum, the method comprising:

[0008] Acquire an original load spectrum of a road test, and segment the original load spectrum according to each working condition in the original load spectrum to obtain multiple sub-original load spectra;

[0009] According to all signal channels of each working condition in the multi-segment original load spectrum, the damage of each signal channel under each working condition is respectively obtained;

[0010] The total damage of each signal channel of the road test is obtained according to the standard cycle number of the road test and the damage of each signal channel, and the damage proportion of each working condition under each signal channel is determined;

[0011] A damage ratio matrix of the damage ratio of each working condition under each signal channel is obtained, and a target number of cycles for each working condition is determined according to the damage ratio matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test.

[0012] Furthermore, in the above-mentioned method for determining the load spectrum of the road test, before the step of obtaining the total damage of each signal channel of the road test according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage proportion of each working condition under each signal channel, the method further includes:

[0013] Determining whether there is a target operating condition below a damage threshold in each of the operating conditions according to the damage of each signal channel;

[0014] If so, the target operating condition is removed and the steps of obtaining the total damage of each signal channel of the road test based on the standard number of cycles of the road test and the damage of each signal channel, and determining the damage proportion of each operating condition under each signal channel are performed.

[0015] Furthermore, in the above-mentioned method for determining the load spectrum of the road test, before the step of obtaining the damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining the target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test, the step further includes:

[0016] Obtaining the test time of each working condition, and determining whether there is a working condition to be removed that meets the preset removal condition in each working condition;

[0017] If so, the step of obtaining the damage proportion matrix of the damage proportion of each working condition under each signal channel after removing the working condition to be removed, and determining the target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test is performed;

[0018] Among them, the preset removal condition is that the damage ratio and test time of the working condition to be removed are both lower than the preset threshold value.

[0019] Furthermore, in the above-mentioned method for determining the load spectrum of the road test, the step of obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining the target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test includes:

[0020] Obtain a damage proportion matrix according to the damage proportion of each signal channel under each working condition, and determine a cycle number matrix of the road test according to the equivalent principle of total damage of each signal channel of the road test to determine the initial target cycle number of each working condition;

[0021] The initial target number of cycles is screened according to the test time of each working condition to obtain the target number of cycles.

[0022] Furthermore, the method for determining the load spectrum of the road test, wherein the step of obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining the target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test further includes:

[0023] Obtaining the test time and damage ratio of each working condition, and judging whether each working condition meets the target cycle number reduction condition according to the test time and damage ratio;

[0024] If yes, the target number of cycles is reduced according to a preset rule;

[0025] The target cycle number reduction condition is that both the test time and the damage ratio meet the target cycle number reduction threshold.

[0026] Another object of the present invention is to provide a device for determining a road test load spectrum, the device comprising:

[0027] A segmentation module is used to obtain an original load spectrum of a road test, and to segment the original load spectrum according to each working condition in the original load spectrum to obtain multiple sub-original load spectra;

[0028] An acquisition module, used for respectively acquiring damage of each signal channel under each working condition according to all signal channels of each working condition in the multi-segment original load spectrum;

[0029] A damage ratio determination module, used for obtaining the total damage of each signal channel of the road test according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage ratio of each working condition under each signal channel;

[0030] The target load spectrum determination module is used to obtain a damage ratio matrix of the damage ratio of each working condition under each signal channel, and determine the target number of cycles for each working condition according to the damage ratio matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test.

[0031] Furthermore, the above-mentioned device for determining the road test load spectrum, wherein the device also includes:

[0032] A first judgment module is used to judge whether there is a target working condition below a damage threshold in each working condition according to the damage of each signal channel;

[0033] If so, the target operating condition is removed and the steps of obtaining the total damage of each signal channel of the road test based on the standard number of cycles of the road test and the damage of each signal channel, and determining the damage proportion of each operating condition under each signal channel are performed.

[0034] Furthermore, the above-mentioned device for determining the road test load spectrum, wherein the device also includes:

[0035] A second judgment module is used to obtain the test time of each working condition and judge whether there is a working condition to be removed that meets the preset removal condition in each working condition;

[0036] If so, the step of obtaining the damage proportion matrix of the damage proportion of each working condition under each signal channel after removing the working condition to be removed, and determining the target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test is performed;

[0037] Among them, the preset removal condition is that the damage ratio and test time of the working condition to be removed are both lower than the preset threshold value.

[0038] Another object of an embodiment of the present invention is to provide a readable storage medium having a computer program stored thereon, wherein the program implements the steps of the above method when executed by a processor.

[0039] Another object of an embodiment of the present invention is to provide an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above method when executing the program.

[0040] The embodiment of the present invention performs segmented analysis on each operating condition of the original load spectrum of the road test and determines the corresponding damage, and analyzes the total damage of each signal channel calculated by the damage and the damage ratio of each operating condition. The number of cycles of operating conditions with long time and small damage ratio can be reduced, while the number of cycles of operating conditions with short time and large damage ratio can be increased accordingly. The total bench test time is compressed while the total damage of the original road test is guaranteed, thereby solving the problem of long test time when conducting road tests in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 Flow chart of the method for determining the road test load spectrum in the first embodiment of the present invention;

[0042] Figure 2 It is a structural block diagram of a device for determining a road test load spectrum in a third embodiment of the present invention;

[0043] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0044] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0045] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed types.

[0047] How to shorten the duration of the road test will be described in detail below with reference to specific embodiments and drawings.

[0048] Embodiment 1

[0049] See also Figure 1, which shows a method for determining a road test load spectrum in a first embodiment of the present invention, and the method includes steps S10 to S13.

[0050] Step S10, obtaining an original load spectrum of a road test, and segmenting the original load spectrum according to each working condition in the original load spectrum to obtain multiple sub-original load spectra.

[0051] Specifically, the original load spectrum is the existing load spectrum when the road simulation is tested on the test bench, wherein each working condition has a corresponding segment on the load spectrum, and the original load spectrum is segmented according to the type of working condition. For example, a road test specification includes 12 working conditions, then the load spectra corresponding to these 12 working conditions on the original load spectrum are analyzed and intercepted as the sub-original load spectra of each working condition.

[0052] Step S11, respectively obtaining the damage of each signal channel under each working condition according to all signal channels under each working condition in the multi-segment original load spectrum.

[0053] Among them, the sub-original load spectrum is divided according to different working conditions. The damage under a certain working condition in the entire road test can be obtained through the sub-original load spectrum. In each road test, there are multiple signal channels on the load spectrum. Therefore, the damage of each signal channel under each working condition is obtained from the sub-original load spectrum.

[0054] Step S12, obtaining the total damage of each signal channel of the road test according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage proportion of each operating condition under each signal channel.

[0055] Specifically, according to the standard cycle number of the road test and the damage of each signal channel obtained, the total road test damage under each signal channel and the damage ratio of each working condition under each channel are obtained.

[0056] Step S13, obtaining a damage ratio matrix of the damage ratio of each working condition under each signal channel, and determining a target number of cycles for each working condition according to the damage ratio matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine a target load spectrum for the road test.

[0057] Specifically, according to the damage equivalence principle, the matrix calculates the new number of cycles of the working condition, and the number of cycles is selected according to the test time of each working condition, that is, the number of cycles of the working condition with long time and small damage ratio is reduced, while the number of cycles of the working condition with short time and large damage ratio is increased accordingly, so as to obtain the target number of cycles for the new road test and then determine the target load spectrum of the new load spectrum of the road test.

[0058] More specifically, in some optional embodiments of the present invention, the step of obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining a target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition, and the total damage of each signal channel of the road test to determine the target load spectrum of the road test includes:

[0059] Obtain a damage proportion matrix according to the damage proportion of each signal channel under each working condition, and determine a cycle number matrix of the road test according to the equivalent principle of total damage of each signal channel of the road test to determine the initial target cycle number of each working condition;

[0060] The initial target number of cycles is screened according to the test time of each working condition to obtain the target number of cycles.

[0061] In specific implementation, the damage proportion matrix is ​​multiplied with the preset cycle number matrix to ensure that the total damage of each signal channel is equivalent to the total damage after the number of cycles is modified. The value in the preset cycle number matrix is ​​the initial target cycle number corresponding to each working condition. The target cycle number can then be selected based on the test time of each working condition.

[0062] In summary, the road test load spectrum determination method in the above-mentioned embodiment of the present invention performs segmented analysis on each working condition of the original load spectrum of the road test and determines the corresponding damage, and calculates the total damage of each signal channel through the damage and analyzes the damage ratio of each working condition. In this way, the number of cycles of working conditions with long time and small damage ratio can be reduced, while the number of cycles of working conditions with short time and large damage ratio can be increased accordingly. Under the premise of ensuring the total damage of the original road test, the total bench test time is also compressed, solving the problem of long test time when conducting road tests in the prior art.

[0063] Embodiment 2

[0064] The embodiment of the present invention also provides a method for determining a road test load spectrum. The method for determining a road test load spectrum in this embodiment is different from the method for determining a road test load spectrum in the first embodiment in that:

[0065] Before step S12, the following steps are also included:

[0066] Determining whether there is a target operating condition below a damage threshold in each of the operating conditions according to the damage of each signal channel;

[0067] If so, the target operating condition is removed and the steps of obtaining the total damage of each signal channel of the road test based on the standard number of cycles of the road test and the damage of each signal channel, and determining the damage proportion of each operating condition under each signal channel are performed.

[0068] It is understandable that the purpose of re-editing the original load spectrum is to shorten the test time while ensuring damage by reducing the number of cycles of the working conditions with long test lengths and small damage. Therefore, in order to further improve the efficiency or accuracy of load spectrum determination, when there is a target working condition that is extremely lower than the damage threshold in each working condition after the damage to each signal channel is obtained, its contribution to the road test is not large. After removing the target working condition, the total damage and damage ratio are calculated, where the damage threshold can be set according to the actual situation and is not limited here.

[0069] Furthermore, in some optional embodiments of the present invention, before step S13, the following steps are further included:

[0070] Obtaining the test time of each working condition, and determining whether there is a working condition to be removed that meets the preset removal condition in each working condition;

[0071] If so, the step of obtaining the damage proportion matrix of the damage proportion of each working condition under each signal channel after removing the working condition to be removed, and determining the target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test is performed;

[0072] Among them, the preset removal condition is that the damage ratio and test time of the working condition to be removed are both lower than the preset threshold value.

[0073] Specifically, in order to further improve the shortening of the test time by the load spectrum, the test time of each working condition and the damage ratio of each working condition are obtained, and when the damage ratio and the test time are both lower than the preset threshold, that is, the working condition has no contribution to the road test, it is removed.

[0074] In addition, in some optional embodiments of the present invention, each working condition may be screened and removed after the target number of cycles is determined. Specifically, the step of obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining the target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition, and the total damage of each signal channel of the road test to determine the target load spectrum of the road test also includes:

[0075] Obtaining the test time and damage ratio of each working condition, and judging whether each working condition meets the target cycle number reduction condition according to the test time and damage ratio;

[0076] If so, the target number of cycles is reduced according to a preset rule.

[0077] Specifically, after determining the target number of cycles for each working condition, that is, after making the initial corresponding adjustment to the number of cycles for each working condition, further adjust the number of cycles for each working condition according to the test time and damage ratio of each working condition. Specifically, when each working condition meets the target number of cycles reduction condition, the target number of cycles for each working condition is reduced, wherein the target number of cycles reduction condition is that both the test time and the damage ratio meet the reduction threshold. For example, the working condition with a long test time and a large damage ratio also has a corresponding reduction in the number of cycles.

[0078] In summary, the road test load spectrum determination method in the above-mentioned embodiment of the present invention performs segmented analysis on each working condition of the original load spectrum of the road test and determines the corresponding damage, and calculates the total damage of each signal channel through the damage and analyzes the damage ratio of each working condition. It can reduce the number of cycles of working conditions with long time and small damage ratio, and increase the number of cycles of working conditions with short time and large damage ratio accordingly. Under the premise of ensuring the total damage of the original road test, the total bench test time is also compressed, and each working condition is adjusted accordingly according to the loss ratio and test time, which solves the problem of long test time in road tests in the prior art and further improves the efficiency of road tests.

[0079] Embodiment 3

[0080] See also Figure 2 , shown is a road test load spectrum determination device proposed in the third embodiment of the present invention, the device comprising:

[0081] The segmentation module 100 is used to obtain the original load spectrum of the road test, and to segment the original load spectrum according to each working condition in the original load spectrum to obtain multiple sub-original load spectra;

[0082] An acquisition module 200 is used to respectively acquire damage of each signal channel under each working condition according to all signal channels of each working condition in the multi-segment original load spectrum;

[0083] A damage proportion determination module 300 is used to obtain the total damage of each signal channel of the road test according to the standard cycle number of the road test and the damage of each signal channel, and determine the damage proportion of each working condition under each signal channel;

[0084] The target load spectrum determination module 400 is used to obtain a damage ratio matrix of the damage ratio of each working condition under each signal channel, and determine the target number of cycles for each working condition according to the damage ratio matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test.

[0085] Furthermore, the above-mentioned device for determining the road test load spectrum, wherein the device also includes:

[0086] A first judgment module is used to judge whether there is a target working condition below a damage threshold in each working condition according to the damage of each signal channel;

[0087] If so, the target operating condition is removed and the steps of obtaining the total damage of each signal channel of the road test based on the standard number of cycles of the road test and the damage of each signal channel, and determining the damage proportion of each operating condition under each signal channel are performed.

[0088] Furthermore, the above-mentioned device for determining the road test load spectrum, wherein the device also includes:

[0089] A second judgment module is used to obtain the test time of each working condition and judge whether there is a working condition to be removed that meets the preset removal condition in each working condition;

[0090] If so, the step of obtaining the damage proportion matrix of the damage proportion of each working condition under each signal channel after removing the working condition to be removed, and determining the target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test is performed;

[0091] Among them, the preset removal condition is that the damage ratio and test time of the working condition to be removed are both lower than the preset threshold value.

[0092] Furthermore, in the above-mentioned road test load spectrum determination device, the target load spectrum determination module is specifically used for:

[0093] Obtain a damage proportion matrix according to the damage proportion of each signal channel under each working condition, and determine a cycle number matrix of the road test according to the equivalent principle of total damage of each signal channel of the road test to determine the initial target cycle number of each working condition;

[0094] The initial target number of cycles is screened according to the test time of each working condition to obtain the target number of cycles.

[0095] Furthermore, the above-mentioned device for determining the road test load spectrum, wherein the device also includes:

[0096] A third judgment module is used to obtain the test time and damage ratio of each working condition, and judge whether each working condition meets the target cycle number reduction condition according to the test time and damage ratio;

[0097] If yes, the target number of cycles is reduced according to a preset rule;

[0098] The target cycle number reduction condition is that both the test time and the damage ratio meet the target cycle number reduction threshold.

[0099] The functions or operation steps implemented when the above modules are executed are substantially the same as those in the above method embodiments, and will not be repeated here.

[0100] In addition, the road test load spectrum method proposed in the present invention is tested by determining a load spectrum of a rear axle road simulation test, and the test steps are as follows:

[0101] First, the original load spectrum is segmented according to the working conditions. For example, a certain test specification is divided into 12 working conditions. The load spectra of these 12 working conditions are analyzed and intercepted, and the damage of all signal channels of the 12 working conditions is calculated respectively:

[0102] Chan Title 1 2 3 4 5 6 7 8 9 10 11 12 acc@Hub_RL_X.RN_1 0.005682411 0.00353499 0.012735034 0.001201088 0.001837679 0.001408581 0.003320412 0.004422395 0.002499806 0.00320105 0.001694272 0.005145832 acc@Hub_RL_Y.RN_1 8.06E-04 0.002582023 8.78E-04 2.81E-04 1.83E-04 2.59E-04 1.87E-04 1.97E-04 3.19E-04 1.71E-04 1.10E-04 2.72E-04 acc@Hub_RL_Z.RN_1 0.259076186 0.244993709 0.222932473 0.040070915 0.052929849 0.103139422 0.102456336 0.123320309 0.097971057 0.050716293 0.057757833 0.062895808 acc@Hub_RR_X.RN_1 0.018955932 0.013963815 0.016152161 0.004381303 0.00404375 0.003462465 0.004053555 0.004035426 0.004509615 0.002238821 0.002209016 0.006221093 acc@Hub_RR_Y.RN_1 7.65E-04 0.001244276 6.28E-04 2.58E-04 1.52E-04 1.91E-04 1.47E-04 1.49E-04 2.66E-04 8.85E-05 1.17E-04 1.84E-04 acc@Hub_RR_Z.RN_1 0.278325506 0.22981892 0.227765811 0.067180621 0.083034282 0.134586218 0.102615765 0.076795832 0.08118254 0.038484753 0.054541961 0.050818497 acc@DianJi_L_X.RN_1 0.016214547 0.011552829 0.040379355 0.00880168 0.015415378 0.008192909 0.005843968 0.015469508 0.008778146 0.018348288 0.004162071 0.020674693 acc@DianJi_L_Y.RN_1 0.002314365 0.003642549 0.002043123 7.33E-04 3.96E-04 7.78E-04 5.98E-04 5.07E-04 7.58E-04 3.42E-04 3.56E-04 5.49E-04 acc@DianJi_L_Z.RN_1 0.092829339 0.101989127 0.11257568 0.011779464 0.021266138 0.040331413 0.073507725 0.051130814 0.03034593 0.04265431 0.023668836 0.024887829 acc@DianJi_B_X.RN_1 0.008009397 0.008683854 0.011887683 0.002706093 0.004034238 0.002095629 0.004832463 0.003743405 0.00333728 0.003752024 0.003962264 0.005462934 acc@DianJi_B_Y.RN_1 0.001129943 0.001290989 7.43E-04 2.65E-04 2.54E-04 2.95E-04 1.95E-04 3.68E-04 3.47E-04 1.27E-04 1.44E-04 1.68E-04 acc@DianJi_B_Z.RN_1 0.048910812 0.037977536 0.082952843 0.010479454 0.016089629 0.027501362 0.038958259 0.027746402 0.008745473 0.029666412 0.013366528 0.01683106

[0103] Calculate the total road test damage and the damage ratio of each working condition obtained by all signal channels according to the road test specification cycle number:

[0104] Chan Title total 1 2 3 4 5 6 7 8 9 10 11 12 acc@Hub_RL_X.RN_1 0.30360635 1.9％ 1.2％ 4.2％ 0.4％ 0.6％ 0.5％ 1.1％ 1.5％ 0.8％ 1.1％ 0.6％ 1.7％ acc@Hub_RL_Y.RN_1 0.02479412 3.3％ 10.4％ 3.5％ 1.1％ 0.7％ 1.0％ 0.8％ 0.8％ 1.3％ 0.7％ 0.4％ 1.1％ acc@Hub_RL_Z.RN_1 6.32606578 4.1％ 3.9％ 3.5％ 0.6％ 0.8％ 1.6％ 1.6％ 1.9％ 1.5％ 0.8％ 0.9％ 1.0％ acc@Hub_RR_X.RN_1 0.3350666 5.7％ 4.2％ 4.8％ 1.3％ 1.2％ 1.0％ 1.2％ 1.2％ 1.3％ 0.7％ 0.7％ 1.9％ acc@Hub_RR_Y.RN_1 0.01781167 4.3％ 7.0％ 3.5％ 1.4％ 0.9％ 1.1％ 0.8％ 0.8％ 1.5％ 0.5％ 0.7％ 1.0％ acc@Hub_RR_Z.RN_1 5.89327382 4.7％ 3.9％ 3.9％ 1.1％ 1.4％ 2.3％ 1.7％ 1.3％ 1.4％ 0.7％ 0.9％ 0.9％ acc@DianJi_L_X.RN_1 1.12070113 1.4％ 1.0％ 3.6％ 0.8％ 1.4％ 0.7％ 0.5％ 1.4％ 0.8％ 1.6％ 0.4％ 1.8％ acc@DianJi_L_Y.RN_1 0.14062146 1.6％ 2.6％ 1.5％ 0.5％ 0.3％ 0.6％ 0.4％ 0.4％ 0.5％ 0.2％ 0.3％ 0.4％ acc@DianJi_L_Z.RN_1 5.07715587 1.8％ 2.0％ 2.2％ 0.2％ 0.4％ 0.8％ 1.4％ 1.0％ 0.6％ 0.8％ 0.5％ 0.5％ acc@DianJi_B_X.RN_1 0.3281679 2.4％ 2.6％ 3.6％ 0.8％ 1.2％ 0.6％ 1.5％ 1.1％ 1.0％ 1.1％ 1.2％ 1.7％ acc@DianJi_B_Y.RN_1 0.03458218 3.3％ 3.7％ 2.1％ 0.8％ 0.7％ 0.9％ 0.6％ 1.1％ 1.0％ 0.4％ 0.4％ 0.5％ acc@DianJi_B_Z.RN_1 1.65669353 3.0％ 2.3％ 5.0％ 0.6％ 1.0％ 1.7％ 2.4％ 1.7％ 0.5％ 1.8％ 0.8％ 1.0％

[0105] Damage equivalence, rearrange and combine the working conditions, calculate the new working condition cycle number by matrix, and obtain the new load spectrum cycle number matrix of the road simulation test:

[0106]

[0107] in, is the damage ratio matrix, is a circulant matrix, is the target matrix;

[0108] Check the total damage and test time of the new load spectrum,

[0109]

[0110] After the road simulation test load spectrum was re-edited, the new load spectrum test time was 71% of the original load spectrum test time, and the damage of each channel was retained by more than 98%. It was also verified that the two load spectrum tests were consistent and equivalent.

[0111] Embodiment 4

[0112] Another aspect of the present invention further provides a readable storage medium having a computer program stored thereon, wherein when the program is executed by a processor, the steps of the method described in any one of the above-mentioned embodiments 1 to 2 are implemented.

[0113] Embodiment 5

[0114] On the other hand, the present invention also provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the method described in any one of the above embodiments 1 to 2 are implemented.

[0115] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0116] Those skilled in the art will appreciate that the logic and / or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable instructions for implementing logical functions, and may be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For purposes of this specification, a "computer-readable medium" may be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0117] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0118] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or a combination thereof: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0119] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0120] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for determining a road test load spectrum, characterized in that: The method comprises: Acquire an original load spectrum of a road test, and segment the original load spectrum according to each working condition in the original load spectrum to obtain multiple sub-original load spectra; According to all signal channels of each working condition in the multi-segment original load spectrum, the damage of each signal channel under each working condition is obtained respectively; The total damage of each signal channel of the road test is obtained according to the standard cycle number of the road test and the damage of each signal channel, and the damage proportion of each working condition under each signal channel is determined; Obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining a target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition, and the total damage of each signal channel of the road test to determine a target load spectrum for the road test; The step of obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining a target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition, and the total damage of each signal channel of the road test to determine a target load spectrum for the road test includes: Obtain a damage proportion matrix according to the damage proportion of each signal channel under each working condition, and determine a cycle number matrix of the road test according to the equivalent principle of total damage of each signal channel of the road test to determine the initial target cycle number of each working condition; Screening the initial target number of cycles according to the test time of each working condition to obtain the target number of cycles; After the step of obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining the target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test, the following step is also included: Obtaining the test time and damage ratio of each working condition, and judging whether each working condition meets the target cycle number reduction condition according to the test time and damage ratio; If yes, the target number of cycles is reduced according to a preset rule; The target cycle number reduction condition is that both the test time and the damage ratio meet the target cycle number reduction threshold; Before the step of obtaining the total damage of each signal channel of the road test according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage proportion of each working condition under each signal channel, the step further includes: Determining whether there is a target operating condition below a damage threshold in each of the operating conditions according to the damage of each signal channel; If yes, then the target operating condition is removed and the steps of obtaining the total damage of each signal channel of the road test according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage proportion of each operating condition under each signal channel are performed; Before the step of obtaining a damage proportion matrix of the damage proportion of each working condition under each signal channel, and determining the target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test, the step further includes: Obtaining the test time of each working condition, and determining whether there is a working condition to be removed that meets the preset removal condition in each working condition; If so, the step of obtaining the damage proportion matrix of the damage proportion of each working condition under each signal channel after removing the working condition to be removed, and determining the target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test is performed; Among them, the preset removal condition is that the damage ratio and test time of the working condition to be removed are both lower than the preset threshold value.

2. A device for determining a road test load spectrum, characterized in that: For implementing the method for determining the road test load spectrum according to claim 1, the device comprises: A segmentation module is used to obtain an original load spectrum of a road test, and to segment the original load spectrum according to each working condition in the original load spectrum to obtain multiple sub-original load spectra; An acquisition module, used for respectively acquiring damage of each signal channel under each working condition according to all signal channels of each working condition in the multi-segment original load spectrum; A damage ratio determination module, used for obtaining the total damage of each signal channel of the road test according to the standard cycle number of the road test and the damage of each signal channel, and determining the damage ratio of each working condition under each signal channel; The target load spectrum determination module is used to obtain a damage ratio matrix of the damage ratio of each working condition under each signal channel, and determine the target number of cycles for each working condition according to the damage ratio matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test.

3. The device for determining a road test load spectrum according to claim 2, characterized in that: The device also includes: A first judgment module is used to judge whether there is a target working condition below a damage threshold in each working condition according to the damage of each signal channel; If so, the target operating condition is removed and the steps of obtaining the total damage of each signal channel of the road test based on the standard number of cycles of the road test and the damage of each signal channel, and determining the damage proportion of each operating condition under each signal channel are performed.

4. The device for determining a road test load spectrum according to claim 3, characterized in that: The device also includes: A second judgment module is used to obtain the test time of each working condition and judge whether there is a working condition to be removed that meets the preset removal condition in each working condition; If so, the step of obtaining the damage proportion matrix of the damage proportion of each working condition under each signal channel after removing the working condition to be removed, and determining the target number of cycles for each working condition according to the damage proportion matrix, the test time of each working condition and the total damage of each signal channel of the road test to determine the target load spectrum of the road test is performed; Among them, the preset removal condition is that the damage ratio and test time of the working condition to be removed are both lower than the preset threshold value.

5. A readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method as claimed in claim 1 are implemented.

6. An electronic device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the steps of the method as claimed in claim 1 are implemented when the processor executes the program.

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