A test method, device, equipment and medium based on a load spectrum

Abstract

The application discloses a test method and device based on a load spectrum, equipment and a medium, and relates to the technical field of electromechanical servo system testing. The method applied to a missile-borne electromechanical servo system comprises the following steps: acquiring a flight working condition load spectrum and an environmental stress spectrum, wherein the flight working condition load spectrum contains torque curves and position curves corresponding to torque parameters and position parameters respectively, so that multiple parameters in a whole service time can be tested in one test process; the environmental stress spectrum at least includes one of a temperature curve, an air pressure curve and a humidity curve corresponding to a temperature parameter, an air pressure parameter and a humidity parameter respectively; feature extraction is performed according to position characteristics and torque characteristics to obtain the position curve and the torque curve; the environmental stress spectrum is fitted with the position curve and the torque curve respectively to obtain a fitted position curve and a fitted torque curve, and testing is performed, so that the missile-borne electromechanical servo system is in a real working condition during testing, and the test coverage and the test efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromechanical servo system testing, in particular to a test method and device based on a load spectrum, equipment and a medium. BACKGROUND

[0002] With the development of electromechanical servo systems, the testing technology for electromechanical servo systems has also developed. The testing of various parameters of missile-borne electromechanical servo systems is particularly important. In the prior art, when testing the parameters of missile-borne electromechanical servo systems, because the missile-borne electromechanical servo systems have the service characteristic of short-time work, only single parameter testing can be performed according to the task technical index when the missile-borne electromechanical servo system is working. In a short time, the missile-borne electromechanical servo system cannot be placed in an environment with real working condition parameters, so the test results obtained at this time can only represent whether the various parameters of the missile-borne electromechanical servo system in a short time meet the standard, and cannot represent whether the various parameters of the missile-borne electromechanical servo system in all time meet the standard, that is, the test coverage is poor. At the same time, because of the service characteristic of short-time work of the missile-borne electromechanical servo system, only one parameter can be tested in one working time, and all parameters cannot be tested. At this time, if all parameters are to be tested, multiple tests must be performed, resulting in low test efficiency.

[0003] In view of the above problems, how to improve the test coverage and test efficiency is a problem that technicians in the field strive to solve. SUMMARY

[0004] The purpose of the present application is to provide a test method and device based on a load spectrum, equipment and a medium for improving test coverage and test efficiency.

[0005] To solve the above technical problems, the present application provides a test method based on a load spectrum applied to a missile-borne electromechanical servo system, comprising:

[0006] Obtaining a flight working condition load spectrum and an environmental stress spectrum, the flight working condition load spectrum containing torque curves and position curves corresponding to torque parameters and position parameters respectively, and the environmental stress spectrum including at least one of temperature curves, air pressure curves and humidity curves corresponding to temperature parameters, air pressure parameters and humidity parameters respectively;

[0007] Feature extraction is performed on the flight working condition load spectrum according to position characteristics and torque characteristics, and position curves and torque curves are obtained;

[0008] The environmental stress spectrum is fitted with the position curves and the torque curves respectively to obtain fitted position curves and fitted torque curves;

[0009] The fitted position curves and the fitted torque curves are tested.

[0010] Preferably, the testing on the fitted position curve and the fitted moment curve comprises:

[0011] generating a test curve according to the fitted position curve and the fitted moment curve, the test curve being a curve generated by the plurality of parameters according to time;

[0012] selecting a time interval according to the test curve;

[0013] testing the test curve within the time interval.

[0014] Preferably, after the testing on the test curve, the method further comprises:

[0015] judging whether the plurality of parameters represented by the test curve reaches a preset value;

[0016] if yes, representing that the test is qualified;

[0017] if no, representing that the test is unqualified.

[0018] Preferably, after representing that the test is unqualified, the method further comprises:

[0019] outputting prompt information representing that the test is unqualified.

[0020] Preferably, after representing that the test is qualified, the method further comprises:

[0021] outputting test values of the plurality of parameters.

[0022] Preferably, after the test curve is generated according to the fitted position curve and the fitted moment curve, and before the time interval is selected according to the test curve, the method further comprises:

[0023] judging whether a maximum value of the test curve exceeds a preset maximum value;

[0024] if yes, ending;

[0025] if no, entering the step of selecting the time interval according to the test curve.

[0026] Preferably, the fitting of the environmental stress spectrum with the position curve and the moment curve respectively comprises:

[0027] fitting the environmental stress spectrum with the position curve and the moment curve respectively by a least square method.

[0028] To solve the above technical problems, the application further provides a test device based on a load spectrum, comprising:

[0029] The acquisition module is configured to acquire a flight condition load spectrum and an environmental stress spectrum, the flight condition load spectrum containing a torque curve and a position curve corresponding to torque parameters and position parameters respectively, and the environmental stress spectrum including at least one of a temperature curve, a pressure curve and a humidity curve corresponding to temperature parameters, pressure parameters and humidity parameters respectively.

[0030] The feature extraction module is configured to perform feature extraction on the flight condition load spectrum according to position features and torque features, and obtain the position curve and the torque curve.

[0031] The first fitting module is configured to fit the environmental stress spectrum with the position curve and the torque curve respectively, and obtain a fitted position curve and a fitted torque curve.

[0032] The first test module is configured to test the fitted position curve and the fitted torque curve.

[0033] In addition, the device further includes the following modules:

[0034] The generation module is configured to generate a test curve according to the fitted position curve and the fitted torque curve, the test curve being a curve generated according to time and multiple parameters.

[0035] The selection module is configured to select a time interval according to the test curve.

[0036] The second test module is configured to test the test curve in the time interval.

[0037] The first judgment module is configured to judge whether the multiple parameters represented by the test curve reach preset values.

[0038] If yes, it is represented that the test is qualified.

[0039] If no, it is represented that the test is unqualified.

[0040] The first output module is configured to output prompt information representing that the test is unqualified.

[0041] The second output module is configured to output test values of the multiple parameters.

[0042] The second judgment module is configured to judge whether a maximum value of the test curve exceeds a preset maximum value.

[0043] If yes, the process ends.

[0044] If no, the process enters the selection module.

[0045] The second fitting module is configured to fit the environmental stress spectrum with the position curve and the torque curve respectively by using a least square method.

[0046] To solve the above technical problems, the application further provides a test device based on a load spectrum, comprising:

[0047] a memory for storing the computer program;

[0048] a processor for pointing to the computer program to implement the steps of the test method based on the load spectrum.

[0049] To solve the above technical problems, the application further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the steps of the test method based on the load spectrum.

[0050] The test method based on the load spectrum provided by the application is applied to a missile-borne machine electric servo system, and includes the following steps: obtaining a flight condition load spectrum and an environmental stress spectrum, the flight condition load spectrum containing torque curves and position curves corresponding to torque parameters and position parameters respectively, and the environmental stress spectrum containing at least one of a temperature curve, a pressure curve and a humidity curve corresponding to a temperature parameter, a pressure parameter and a humidity parameter respectively; extracting features according to position characteristics and torque characteristics from the flight condition load spectrum, and obtaining the position curves and the torque curves; fitting the environmental stress spectrum with the position curves and the torque curves respectively to obtain fitted position curves and fitted torque curves and to test. Since the flight condition load spectrum contains the position curves and the torque curves, multiple parameters can be obtained for testing in one test process. Meanwhile, the position curves and the torque curves can be obtained from the flight condition load spectrum only when the missile-borne machine electric servo system is in a working state, and at this time, the environmental stress spectrum is fitted with the position curves and the torque curves respectively, so that the missile-borne machine electric servo system is tested under real working conditions, thereby improving test coverage and test efficiency.

[0051] The application further provides a test device and medium based on the load spectrum, and the effects are the same as above. BRIEF DESCRIPTION OF DRAWINGS

[0052] To more clearly illustrate the embodiments of the application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0053] Figure 1 A test method flowchart based on the load spectrum provided by the embodiments of the application;

[0054] Figure 2 A test device structure diagram based on the load spectrum provided by the embodiments of the application;

[0055] Figure 3A test device structure diagram based on a load spectrum is provided in the embodiments of the present application. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0057] The core of the present application is to provide a test method, device, equipment and medium based on a load spectrum, which can improve test coverage and test efficiency.

[0058] In order to enable personnel in the technical field to better understand the present application scheme, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0059] Figure 1 A test method flowchart based on a load spectrum is provided in the embodiments of the present application. As shown in the figure, the test method based on a load spectrum is applied to a missile-borne machine electric servo system, and includes the following steps. Figure 1

[0060] S10: Obtain a flight working condition load spectrum and an environmental stress spectrum.

[0061] The flight working condition load spectrum contains torque curves and position curves corresponding to torque parameters and position parameters respectively, and the environmental stress spectrum contains at least one of a temperature curve, a pressure curve and a humidity curve corresponding to a temperature parameter, a pressure parameter and a humidity parameter.

[0062] The flight working condition load spectrum needs to be obtained through a wind tunnel experiment, an aerodynamic simulation experiment and the like. The flight working condition load spectrum also contains curves corresponding to other parameters, and the other parameters can be an angle of rotation, power and the like.

[0063] S11: Feature extraction is performed on the flight working condition load spectrum according to position characteristics and torque characteristics, and a position curve and a torque curve are obtained.

[0064] S12: The environmental stress spectrum is fitted with the position curve and the torque curve respectively, and a fitted position curve and a fitted torque curve are obtained.

[0065] ​It should be noted that as a preferred implementation, the environmental stress spectrum can be fitted with the position curve and the moment curve respectively by using the least square method. The least square method (also known as the least square method) is a mathematical optimization method. It finds the best function match of data by minimizing the sum of squares of errors. Using the least square method, unknown data can be easily obtained, and the sum of squares of errors between the obtained data and actual data is minimized.

[0066] The least square method can be used for curve fitting. For given data points {(X i ,Y i )}, where i=0, 1, …, m. In the given function class φ, find P(X) ∈ φ, so that the sum of squares of errors E 2 is minimized, E 2 =∑(P(X i )-Y i ) 2 . Geometrically, it is to find a curve y=P(X) with the smallest distance square sum of the given data points {(X i ,Y i )}, where i=0, 1, …, m. The function P(X) is called the fitting function or the least square solution, and the method of finding the fitting function P(X) is called the least square method of curve fitting.

[0067] S13: Test the fitted position curve and the fitted moment curve.

[0068] The specific steps of testing the fitted position curve and the fitted moment curve are as follows:

[0069] According to the fitted position curve and the fitted moment curve, a test curve is generated, which is a curve generated by multiple parameters according to time;

[0070] According to the test curve, a time interval is selected;

[0071] In the time interval, the test curve is tested.

[0072] The test method based on the load spectrum provided in the application is applied to a missile-borne machine electric servo system and includes the following steps: obtaining a flight working condition load spectrum and an environmental stress spectrum, the flight working condition load spectrum containing torque curves and position curves corresponding to torque parameters and position parameters respectively, and the environmental stress spectrum including at least one of temperature curves, air pressure curves and humidity curves corresponding to temperature parameters, air pressure parameters and humidity parameters respectively; extracting features according to position characteristics and torque characteristics from the flight working condition load spectrum and obtaining the position curves and the torque curves; fitting the environmental stress spectrum with the position curves and the torque curves respectively to obtain fitted position curves and fitted torque curves and to test them. Since the flight working condition load spectrum contains the position curves and the torque curves, multiple parameters can be obtained and tested in one test process. Meanwhile, the position curves and the torque curves can be obtained from the flight working condition load spectrum only when the missile-borne machine electric servo system is in a working state, at which time the environmental stress spectrum is fitted with the position curves and the torque curves respectively so that the missile-borne machine electric servo system is tested under real working conditions. Since the flight working condition load spectrum can contain curves corresponding to other parameters in addition to the position curves and the torque curves, all the multiple parameters in the service life can be tested in one test process, thereby achieving the purposes of improving test coverage and test efficiency.

[0073] On the basis of the above-mentioned embodiments, as a more preferred embodiment, after the test curves are tested, the method further includes the following steps:

[0074] judging whether the multiple parameters represented by the test curves reach preset values;

[0075] if yes, the test is qualified;

[0076] if no, the test is unqualified.

[0077] In the time interval, a time point (the time point is a time point on the x-axis of the test curve) is selected, and the values of the plurality of test parameters corresponding to the time point are obtained. In order to determine whether the test is qualified, it is necessary to determine whether the plurality of parameters reaches the preset value. It should be noted that after the determination, if the test is unqualified, a prompt information indicating that the test is unqualified is output; if the test is qualified, the test values of the plurality of parameters are output. It should be noted that the prompt information can be represented in the form of text or in the form of a data string. When the prompt information is represented in the form of text, it can be represented as "test unqualified", "test failed" and the like; when the prompt information is represented in the form of a data string, the data string can be 1 bit, 2 bits, 4 bits, 8 bits and the like, and the above data string bit sequence can be represented as "1", "10", "1100", "11001110" and the like in turn. It can be understood that the above representation form of the prompt information is only one of a plurality of embodiments, and does not limit the representation form of the prompt information in the embodiment. The implementation manner can be determined according to the specific implementation scene.

[0078] On the basis of the above embodiment, as a more preferred embodiment, after the test curve is generated according to the fitting position curve and the fitting moment curve, before the time interval is selected according to the test curve, the method further comprises:

[0079] determining whether the maximum value of the test curve exceeds the preset maximum value;

[0080] if yes, ending;

[0081] if no, entering the step of selecting the time interval according to the test curve.

[0082] In the embodiment, in order to improve the test efficiency, when the maximum value of the obtained test curve exceeds the preset maximum value, it indicates that the test curve has an error, and the test can be directly ended at this time. For example, when the preset maximum value is 10, and the maximum value of the obtained test curve is 15, that is, 15>10, which indicates that the test curve has an error. When the test curve has an error, the test result obtained by testing the error test curve is also necessarily incorrect. Therefore, in order to avoid such a situation, the test is directly ended when it is determined that the test curve has an error. In this way, the purpose of improving the test efficiency is achieved.

[0083] In the above embodiment, the test method based on the load spectrum is described in detail, and the application also provides an embodiment of a test device based on the load spectrum. It should be noted that the embodiments of the device part are described from two angles, one is based on the functional module, and the other is based on the hardware.

[0084] Figure 2A test device structure diagram based on a load spectrum is provided in an embodiment of the present application. As shown in Figure 2 The present application also provides a test device based on a load spectrum, which comprises:

[0085] An acquisition module 20 is configured to acquire a flight condition load spectrum and an environmental stress spectrum, the flight condition load spectrum containing a torque curve and a position curve corresponding to a torque parameter and a position parameter respectively, and the environmental stress spectrum containing at least one of a temperature curve, a pressure curve and a humidity curve corresponding to a temperature parameter, a pressure parameter and a humidity parameter respectively;

[0086] A feature extraction module 21 is configured to perform feature extraction on the flight condition load spectrum according to position features and torque features, and obtain the position curve and the torque curve;

[0087] A first fitting module 22 is configured to fit the environmental stress spectrum with the position curve and the torque curve respectively, and obtain a fitted position curve and a fitted torque curve;

[0088] A first test module 23 is configured to test the fitted position curve and the fitted torque curve.

[0089] In addition, the device further comprises the following modules:

[0090] A generation module is configured to generate a test curve according to the fitted position curve and the fitted torque curve, the test curve being a curve generated according to multiple parameters over time;

[0091] A selection module is configured to select a time interval according to the test curve;

[0092] A second test module is configured to test the test curve within the time interval.

[0093] A first judgment module is configured to judge whether the multiple parameters represented by the test curve reach preset values;

[0094] If yes, it is represented that the test is qualified;

[0095] If no, it is represented that the test is unqualified.

[0096] A first output module is configured to output prompt information representing that the test is unqualified.

[0097] A second output module is configured to output test values of the multiple parameters.

[0098] A second judgment module is configured to judge whether a maximum value of the test curve exceeds a preset maximum value;

[0099] If yes, the process ends;

[0100] If no, the process enters the selection module.

[0101] The second fitting module is configured to fit the environmental stress spectrum to the position curve and the moment curve respectively by using a least square method.

[0102] The test method based on the load spectrum provided in the application is applied to a missile-borne machine electric servo system, and includes the following steps: obtaining a flight working condition load spectrum and an environmental stress spectrum, the flight working condition load spectrum containing a moment curve and a position curve corresponding to moment parameters and position parameters respectively, and the environmental stress spectrum containing at least one of a temperature curve, a pressure curve and a humidity curve corresponding to temperature parameters, pressure parameters and humidity parameters respectively; extracting features from the flight working condition load spectrum according to position features and moment features, and obtaining the position curve and the moment curve; fitting the environmental stress spectrum to the position curve and the moment curve respectively, and obtaining a fitted position curve and a fitted moment curve for testing. Since the flight working condition load spectrum contains the position curve and the moment curve, multiple parameters can be obtained for testing in one test process. Meanwhile, the position curve and the moment curve can be obtained from the flight working condition load spectrum only when the missile-borne machine electric servo system is in a working state, and the environmental stress spectrum is fitted to the position curve and the moment curve at this time, so that the missile-borne machine electric servo system is tested under a real working condition. Since the flight working condition load spectrum can contain curves corresponding to other parameters in addition to the position curve and the moment curve, all the multiple parameters in a service time can be tested in one test process, so that the test coverage and test efficiency are improved.

[0103] Since the embodiments of the device part correspond to the embodiments of the method part, the embodiments of the device part are described in the description of the embodiments of the method part, and are not described here in detail.

[0104] Figure 3 A test device structure diagram based on a load spectrum provided in an embodiment of the application is shown in FIG. 1, and the test device based on the load spectrum includes: Figure 3

[0105] The memory 30 is configured to store a computer program.

[0106] The processor 31 is configured to execute the computer program to implement the steps of the test method based on the load spectrum mentioned in the above embodiments.

[0107] The test device based on the load spectrum provided in the embodiment can include, but is not limited to, a smart phone, a tablet computer, a notebook computer or a desktop computer, etc.

[0108] ​The processor 31 may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor 31 may be implemented using at least one hardware form selected from Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The processor 31 may also include a main processor and a coprocessor. The main processor, also known as the Central Processing Unit (CPU), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor 31 may integrate a Graphics Processing Unit (GPU), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, the processor 31 may also include an Artificial Intelligence (AI) processor, which is used to handle computational operations related to machine learning.

[0109] The memory 30 may include one or more computer-readable storage media, which may be non-transitory. The memory 30 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In this embodiment, the memory 30 is used to store at least the following computer program, which, after being loaded and executed by the processor 31, is capable of implementing the relevant steps of the load spectrum-based testing method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 30 may also include an operating system and data, and the storage method may be temporary or permanent. The operating system may include Windows, Unix, Linux, etc. The data may include, but is not limited to, the load spectrum-based testing method.

[0110] In some embodiments, the load spectrum-based test device may further include a display screen, input / output interfaces, communication interfaces, a power supply, and a communication bus.

[0111] Those skilled in the art will understand that Figure 3 The structure shown does not constitute a limitation on load spectrum-based test equipment and may include more or fewer components than illustrated.

[0112] The load spectrum based test device provided by the embodiments of the present application comprises a memory 30 and a processor 31, and the processor 31 can realize the load spectrum based test method when executing the program stored in the memory 30.

[0113] Finally, the present application also provides an embodiment corresponding to a computer readable storage medium. The computer readable storage medium stores a computer program, and the computer program is executed by a processor to realize the steps recorded in the above method embodiments.

[0114] It can be understood that if the method in the above embodiments is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and executes all or part of the steps of the methods described in the various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0115] The above describes in detail a load spectrum based test method, device, equipment and medium provided by the present application. The embodiments in the specification are described in a progressive manner, and each embodiment mainly describes the differences from other embodiments. The same or similar parts of each embodiment can be referred to. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the related parts can be referred to the method part. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified, and these improvements and modifications also fall within the protection scope of the claims of the present application.

[0116] It also needs to be explained that in the present specification, the relational terms such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

Claims

1. A load spectrum based testing method, characterized by, The application is applied to a missile-borne electromechanical servo system, comprising: Obtaining a flight condition load spectrum and an environmental stress spectrum, the flight condition load spectrum containing torque curves and position curves corresponding to torque parameters and position parameters respectively, and the environmental stress spectrum containing at least one of temperature curves, air pressure curves and humidity curves corresponding to temperature parameters, air pressure parameters and humidity parameters respectively; Extracting features of the flight condition load spectrum according to position features and torque features, and obtaining position curves and torque curves; Fitting the environmental stress spectrum to the position curves and the torque curves respectively to obtain fitted position curves and fitted torque curves; Generating test curves according to the fitted position curves and the fitted torque curves, the test curves being curves generated according to the parameters over time; selecting a time interval according to the test curves; and testing the test curves in the time interval, all parameters over service time being tested in one test process.

2. The load spectrum based testing method of claim 1, wherein, After the testing of the test curves, the method further comprises: Determining whether the parameters represented by the test curves reach preset values; If yes, the test is qualified; If no, the test is unqualified.

3. The load spectrum based testing method of claim 2, wherein, After the test is unqualified, the method further comprises: Outputting prompt information representing that the test is unqualified.

4. The load spectrum based testing method of claim 2, wherein, After the test is qualified, the method further comprises: Outputting test values of the parameters.

5. The load spectrum based testing method of claim 2, wherein, After the generation of the test curves according to the fitted position curves and the fitted torque curves, and before the selection of the time interval according to the test curves, the method further comprises: Determining whether a maximum value of the test curves exceeds a preset maximum value; If yes, ending; If no, entering the step of selecting the time interval according to the test curves.

6. The load spectrum based testing method of claim 1, wherein, The fitting of the environmental stress spectrum to the position curves and the torque curves comprises: Fitting the environmental stress spectrum to the position curves and the torque curves by a least square method.

7. A load spectrum based testing apparatus, characterized by, The method comprises: An obtaining module, configured to obtain a flight condition load spectrum and an environmental stress spectrum, the flight condition load spectrum containing torque curves and position curves corresponding to torque parameters and position parameters respectively, and the environmental stress spectrum containing at least one of temperature curves, air pressure curves and humidity curves corresponding to temperature parameters, air pressure parameters and humidity parameters respectively; A feature extraction module, configured to extract features of the flight condition load spectrum according to position features and torque features, and obtain position curves and torque curves; A first fitting module, configured to fit the environmental stress spectrum to the position curves and the torque curves respectively to obtain fitted position curves and fitted torque curves; A first test module, configured to test the fitted position curves and the fitted torque curves, all parameters over service time being tested in one test process. The device further comprises a generating module configured to generate a test curve according to the fitted position curve and the fitted moment curve, the test curve being a curve generated by the plurality of parameters according to time; a selecting module configured to select a time interval according to the test curve; and a second testing module configured to test the test curve within the time interval.

8. A load spectrum based test apparatus, characterized by, The computer program comprises: a memory for storing the computer program; a processor for executing the computer program to implement the steps of the load spectrum-based test method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer program is stored on the computer-readable storage medium and is executed by the processor to implement the steps of the load spectrum-based test method according to any one of claims 1 to 6.

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