Sensitivity analysis method for gear transmission error

Abstract

The invention provides a sensitivity analysis method for gear transmission errors, and the method comprises the steps: obtaining a plurality of installation error values corresponding to a gear in a current driving state, the installation error values being obtained through the measurement of at least one installation error parameter of the gear under a plurality of torque working conditions, and the current driving state comprising forward driving and reverse driving; determining a plurality of single dislocation transmission errors corresponding to the plurality of torque working conditions according to the installation error value corresponding to each torque working condition; aiming at each single dislocation transmission error, according to the single dislocation transmission error and a zero transmission error, determining change coefficients respectively corresponding to the plurality of single dislocation transmission errors, the zero transmission error being a transmission error of the gear without the influence of the installation error parameter; and according to the multiple change coefficients, the transmission error sensitivity coefficient of the gear in the current driving state is determined, and the transmission error sensitivity coefficient is used for representing the sensitivity of the transmission error of the gear to the installation error parameter.

Description

Technical Field

[0001] The present application relates to the field of gear performance optimization, and in particular, to a sensitivity analysis method for gear transmission errors. Background Art

[0002] The spiral bevel gear is an important component of the drive axle assembly, and the quality of its design will directly affect the quality of the drive axle assembly. In actual operation, due to the manufacturing errors of the housing and bearings, the adjustment errors generated during assembly, and the influence of load deformation, the installation position of the spiral bevel gear will deviate from the theoretical installation position, which will lead to poor contact of the gears in serious cases, causing greater vibration, impact and noise, seriously affecting the life and performance of the gears.

[0003] The transmission error of spiral bevel gears reflects the deviation between the actual performance of the gears in the transmission process and the theoretical design. The transmission error sensitivity of spiral bevel gears characterizes the degree of change of the transmission error of the gear pair under the influence of the installation error parameters. At present, there is a lack of a systematic analysis method for the transmission error sensitivity of spiral bevel gears. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a sensitivity analysis method of gear transmission error to guide the optimal design of gears and improve gear transmission error.

[0005] In a first aspect, an embodiment of the present application provides a method for analyzing the sensitivity of gear transmission errors, comprising: obtaining a plurality of installation error values ​​corresponding to the gear under a current driving state, wherein the installation error value is obtained by measuring at least one installation error parameter of the gear under a plurality of torque conditions, and the current driving state includes forward drive and reverse drive; determining a plurality of single misalignment transmission errors corresponding to the plurality of torque conditions according to the installation error value corresponding to each torque condition; for each single misalignment transmission error, determining a plurality of variation coefficients corresponding to the single misalignment transmission errors respectively according to the single misalignment transmission error and a zero-position transmission error, wherein the zero-position transmission error is the transmission error of the gear without the influence of the installation error parameter; determining a transmission error sensitivity coefficient of the gear under the current driving state according to the plurality of variation coefficients, and the transmission error sensitivity coefficient is used to characterize the sensitivity of the transmission error of the gear to the installation error parameter.

[0006] In the above scheme, each installation error parameter that can affect the gear transmission error is approached from the perspective of each installation error parameter, and the single misalignment transmission error of an installation error parameter is calculated separately in combination with the corresponding installation error value under each torque condition. In order to measure the degree of change of the single misalignment transmission error, a variation coefficient is introduced. According to the variation coefficient, the degree of change of the gear transmission error under the action of the installation error parameter can be analyzed, which provides optimization ideas for designers to improve the dimensional tolerance design of gears and even various parts of the drive axle, thereby improving the gear transmission error. In addition, it can also meet the noise requirements of the gear.

[0007] As an optional method, the transmission error sensitivity coefficient of the gear in the current driving state is determined based on the multiple variation coefficients, including: determining the transmission error sensitivity coefficient as the average value of the multiple variation coefficients. In the above scheme, the average value of the variation coefficients of the multiple single misalignment transmission errors corresponding to each torque condition is defined as the transmission error sensitivity coefficient. The transmission error sensitivity coefficient can quantify the transmission error sensitivity of the gear design, which is convenient for systematically analyzing the sensitivity of the transmission error.

[0008] As an optional method, for each single misalignment transmission error, a plurality of variation coefficients corresponding to the single misalignment transmission errors are determined according to the single misalignment transmission error and the zero-position transmission error, including: for each single misalignment transmission error, the absolute value of the difference between the single misalignment transmission error and the zero-position transmission error and the quotient of the zero-position transmission error are determined as the variation coefficient corresponding to the single misalignment transmission error. In the above scheme, a calculation formula for the variation coefficient corresponding to the single misalignment transmission error is given, which can quantify the influence of the installation error parameters on the transmission error under a single working condition.

[0009] As an optional manner, after determining the transmission error sensitivity coefficient of the gear in the current driving state according to the multiple variation coefficients, the method further includes: analyzing the sensitivity of the transmission error of the gear to the installation error parameter according to the transmission error sensitivity coefficient, wherein the larger the transmission error sensitivity coefficient is, the greater the influence of the installation error parameter on the transmission error, and vice versa. In the above scheme, the larger the transmission error sensitivity coefficient obtained for an installation error parameter is, the greater the influence of the installation error parameter on the transmission error is, and reducing the installation error parameter can improve the transmission error, thereby providing an optimization direction for the design of gears and parts that cooperate with gears.

[0010] As an optional method, the installation error parameter includes at least one of the following: driven wheel axial misalignment, driving wheel axial misalignment, offset misalignment and shaft angle misalignment. In the above scheme, the driven wheel axial misalignment, driving wheel axial misalignment, offset misalignment and shaft angle misalignment are the installation error parameters that mainly affect the transmission error. Therefore, when analyzing the sensitivity of gear transmission error, at least one of these four factors should be paid attention to, so that the general direction of gear optimization design can be clarified.

[0011] As an optional manner, the obtaining of multiple installation error values ​​corresponding to the gear in the current driving state includes: obtaining the multiple installation error values ​​corresponding to the gear in the current driving state from a finite element simulation model including the gear. In the above scheme, the installation error values ​​are obtained using the finite element simulation model, which can handle complex engineering design tasks and provide highly accurate results.

[0012] As an optional method, the determining of the multiple single misalignment transmission errors corresponding to the multiple torque conditions according to the installation error value corresponding to each torque condition includes: inputting the installation error value into the finite element simulation model to obtain the single misalignment transmission error output by the finite element simulation model. In the above scheme, the finite element simulation model can also be used to obtain the single misalignment transmission error, which can quickly obtain the single misalignment transmission error and improve the process processing speed of analyzing the sensitivity of gear transmission errors.

[0013] In a second aspect, the present application provides a computer program product, comprising computer program instructions, wherein when the computer program instructions are read and executed by a processor, the method described in the first aspect is executed.

[0014] In a third aspect, the present application provides an electronic device comprising: a processor, a memory and a bus, wherein the processor and the memory communicate with each other through the bus; the memory stores program instructions executable by the processor, and the processor calls the program instructions to execute the method described in the first aspect above.

[0015] In a fourth aspect, the present application provides a computer-readable storage medium, comprising: the computer-readable storage medium stores computer instructions, and the computer instructions enable the computer to execute the method described in the first aspect above.

[0016] Other features and advantages of the present application will be described in the subsequent description, and in part will become apparent from the description, or will be understood by implementing the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic flow chart of a sensitivity analysis method for gear transmission errors provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0020] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0021] It should be noted that all technical and scientific terms used in this document have the same meanings as those generally understood by technicians in the technical field to which this application belongs; the terms used in this document are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0022] In the description of the embodiments of the present application, “plurality” means more than two, unless otherwise clearly and specifically defined.

[0023] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0024] Figure 1 A schematic flow chart of a sensitivity analysis method for gear transmission error provided in an embodiment of the present application, the method comprising the following steps:

[0025] Step S10: Acquire multiple installation error values ​​corresponding to the gear in the current driving state, wherein the installation error value is obtained by measuring at least one installation error parameter of the gear under multiple torque conditions, and the current driving state includes forward drive and reverse drive.

[0026] The driving state refers to the motion state of the gear transmission system. According to the different driving states, the transmission error is divided into two categories, including forward drive transmission error and reverse drive transmission error. The forward drive transmission error refers to the difference between the actual center distance and the theoretical center distance of the gear pair when it is driven in the forward direction (that is, the driving gear drives the driven gear); the reverse drive transmission error refers to the difference between the actual center distance and the theoretical center distance of the gear pair when it is driven in the reverse direction (that is, the driven gear drives the driving gear). Usually, the micro-modification parameters of the forward and reverse drive tooth surfaces of the gear are different, and the sensitivity of the transmission error to the installation error parameters is also different. Therefore, the sensitivity of the gear transmission error can be analyzed from the two driving states of forward drive and reverse drive.

[0027] The installation error parameter of the gear refers to the deviation between the actual installation state and the ideal state caused by manufacturing error, assembly error, etc. during the gear installation process, for example, it may include center distance error, axial offset, parallelism error, tilt error, tooth thickness error, etc. As an implementation method, for the installation error parameters that have a greater impact on the gear transmission error, the sensitivity of the transmission error to each installation error parameter may be analyzed separately.

[0028] The torque condition of a gear is the torque that the gear bears when working. According to the design requirements of different gear products, the torque conditions of concern are also different. The transmission error varies with the size of the torque condition, so the analysis of the transmission error sensitivity can comprehensively cover a variety of torque conditions. The embodiment of the present application does not specifically limit the number of multiple torque conditions, and those skilled in the art can adjust them according to actual conditions. For example, if the driving state is forward drive, the multiple torque conditions can be 10% maximum torque, 30% maximum torque, 50% maximum torque, 70% maximum torque, and 90% maximum torque respectively; if the driving state is reverse drive, the multiple torque conditions can be -5% maximum torque, -10% maximum torque, -20% maximum torque, -30% maximum torque, -45% maximum torque, -60% maximum torque, -75% maximum torque, and -90% maximum torque respectively.

[0029] Each installation error parameter corresponds to an installation error value under each torque condition. There is no limit to the way to obtain the installation error value through measurement. For example, a high-precision measuring instrument such as a coordinate measuring machine (CMM), a laser interferometer, an optical measurement system, etc. can be used to directly measure the installation error value of the gear; or, a finite element model of the gear transmission system can be established using finite element analysis software to simulate the installation process of the gear and calculate the installation error value; or, by establishing a dynamic model of the gear transmission system, the dynamic behavior of the gear under actual working conditions can be simulated and the installation error value can be calculated.

[0030] Step S20: determining a plurality of single misalignment transmission errors corresponding to a plurality of torque conditions according to the installation error value corresponding to each torque condition.

[0031] Single misalignment transmission error refers to the transmission error caused by only a single installation error parameter without the influence of other installation error parameters.

[0032] In the simulation analysis, the control variable method is used to strictly control the transmission error of the gear to be affected only by the installation error parameters to be analyzed, and a mathematical model or theoretical formula is used to calculate the influence of the installation error parameters on the transmission error, that is, the single misalignment transmission error.

[0033] Step S30: for each single misalignment transmission error, determining the variation coefficients corresponding to the multiple single misalignment transmission errors respectively according to the single misalignment transmission error and the zero position transmission error, wherein the zero position transmission error is the transmission error of the gear without the influence of the installation error parameter.

[0034] In order to measure the degree of change of the single misalignment transmission error, it is necessary to combine the single misalignment transmission error with the zero position transmission error for comparative analysis. The zero position transmission error refers to the transmission error without any installation error parameter influence under a single torque condition. There is one zero position transmission error corresponding to one torque condition, and the method of obtaining the zero position transmission error is the same as that of the single misalignment transmission error.

[0035] The coefficient of variation serves to quantify the degree of variation of the single misalignment transmission error, and its value may be the absolute value of the difference between the single misalignment transmission error and the zero position transmission error, or other more complex calculation methods.

[0036] Step S40: determining a transmission error sensitivity coefficient of the gear in the current driving state according to the multiple variation coefficients, where the transmission error sensitivity coefficient is used to characterize the sensitivity of the transmission error of the gear to the installation error parameter.

[0037] After calculating the variation coefficient of the single misalignment transmission error corresponding to each torque condition in step S30, it is also necessary to determine the transmission error sensitivity coefficient by comprehensively considering the variation coefficients under all torque conditions. The transmission error sensitivity coefficient can be customized. The customized transmission error sensitivity coefficient can characterize the sensitivity of the transmission error to the installation error parameter currently being analyzed. For example, the commonly used statistics of multiple variation coefficients are defined as the transmission error sensitivity coefficient. The commonly used statistics include mean, mode, standard deviation, variance, etc.

[0038] In the above scheme, each installation error parameter that can affect the gear transmission error is approached from the perspective of each installation error parameter, and the single misalignment transmission error of an installation error parameter is calculated separately in combination with the corresponding installation error value under each torque condition. In order to measure the degree of change of the single misalignment transmission error, a variation coefficient is introduced. According to the variation coefficient, the degree of change of the gear transmission error under the action of the installation error parameter can be analyzed, which provides optimization ideas for designers to improve the dimensional tolerance design of gears and even various parts of the drive axle, thereby improving the gear transmission error. In addition, it can also meet the noise requirements of the gear.

[0039] In some embodiments, step S40 includes:

[0040] The average of the multiple coefficients of variation is determined as the transmission error sensitivity coefficient.

[0041] The error sensitivity coefficient of the gear needs to be calculated separately under the forward drive condition and the reverse drive condition. Therefore, the average value of multiple variation coefficients can be calculated under the forward drive condition and determined as the transmission error sensitivity coefficient under the forward drive condition, and the average value of multiple variation coefficients can be calculated under the reverse drive condition and determined as the transmission error sensitivity coefficient under the reverse drive condition.

[0042] In the above scheme, the average value of the variation coefficients of multiple single misalignment transmission errors corresponding to each torque condition is defined as the transmission error sensitivity coefficient. The transmission error sensitivity coefficient can quantify the transmission error sensitivity of the gear design, which is convenient for systematically analyzing the sensitivity of the transmission error.

[0043] In some embodiments, step S30 includes:

[0044] For each single misalignment transmission error, the quotient of the absolute value of the difference between the single misalignment transmission error and the zero-position transmission error and the zero-position transmission error is determined as the variation coefficient corresponding to the single misalignment transmission error.

[0045] Assume that the gear is divided into a total of n f torque conditions, divided into a total of n r Torque conditions, in the positive drive state, for an installation error parameter, obtain n f The torque conditions correspond to n f Similarly, in the reverse driving state, for one installation error parameter, n r The torque conditions correspond to n r Installation error values, where the installation error value corresponding to the i-th torque condition is recorded as P regardless of the driving state. i , the zero position transmission error corresponding to the i-th torque condition is TE i0 , installation error value P iThe corresponding single misalignment transmission error is TE i .

[0046] According to step S30, the single misalignment transmission error TE i The corresponding coefficient of variation is: Among them, k i is the coefficient of variation of the single misalignment transmission error corresponding to the i-th torque condition.

[0047] Correspondingly, according to the aforementioned embodiment, the transmission error sensitivity coefficient can be defined as:

[0048]

[0049] When n=n f When S t It indicates the sensitivity coefficient of the transmission error to the current installation error parameter in the positive drive state; when n = n r When S t It represents the sensitivity coefficient of the transmission error to the current installation error parameters in the back-drive state.

[0050] In the above scheme, the calculation formula of the variation coefficient corresponding to the single misalignment transmission error is given, which can quantify the influence of the installation error parameters on the transmission error under a single working condition.

[0051] In some embodiments, after step S40, the method further includes:

[0052] The sensitivity of the transmission error of the gear to the installation error parameter is analyzed according to the transmission error sensitivity coefficient. The larger the transmission error sensitivity coefficient is, the greater the influence of the installation error parameter on the transmission error is, and vice versa.

[0053] The larger the transmission error sensitivity coefficient is, the more the transmission error is affected by the current installation error parameters, and vice versa. When the transmission error sensitivity coefficient is 0, it means that the transmission error is not affected by the current installation error parameters.

[0054] By analyzing the sensitivity of transmission error to installation error parameters, we can provide direction for gear design optimization. Taking the sensitivity analysis of spiral bevel gears in automobile drive axle assemblies as an example, when the transmission error is most sensitive to the axial error parameter of the driven wheel, it means that the change of the axial error of the driven wheel can greatly affect the transmission error value. In this way, the gear transmission error can be optimized by reducing the axial error of the large wheel. The main factors affecting the axial error of the large wheel are the axial dimension tolerances of the differential and main reducer housing related contact end faces, differential bearings, adjustment gaskets, and gear micro-modification parameters. Therefore, the noise excitation of the spiral bevel gear can be reduced by optimizing these parameters, thereby reducing the noise of the drive axle assembly.

[0055] In the above scheme, the larger the transmission error sensitivity coefficient obtained for an installation error parameter, the greater the transmission error is affected by the installation error parameter. By reducing the installation error parameter, the transmission error can be improved, thereby providing an optimization direction for the design of gears and parts that cooperate with gears.

[0056] In some embodiments, the installation error parameter includes at least one of the following: an axial misalignment of a driven wheel, an axial misalignment of a driving wheel, an offset misalignment, and an axial angle misalignment.

[0057] In the above scheme, the axial misalignment of the driven wheel, the axial misalignment of the driving wheel, the offset misalignment and the angular misalignment of the shaft are the installation error parameters that have the main impact on the transmission error. Therefore, when analyzing the sensitivity of gear transmission error, we should focus on at least one of these four factors, so as to clarify the general direction of gear optimization design.

[0058] In some embodiments, step S10 includes:

[0059] A plurality of installation error values ​​corresponding to the gears under the current driving state are obtained from a finite element simulation model including the gears.

[0060] The finite element simulation model is widely used in engineering design, product development, scientific research and other fields. It is a mathematical and numerical model used to simulate and predict the physical behavior of structures or systems through the finite element analysis method. This model divides complex physical systems (such as structures, fluids, thermal fields, etc.) into many small, simple geometric units (finite elements) and describes the mechanical behavior of these units through a series of mathematical equations. Commonly used finite element simulation software includes ANSYS, ABAQUS, SOLIDWORKS Simulation, etc.

[0061] Specifically, the method of obtaining the installation error value through the finite element simulation model is as follows: establishing a finite element model of the gear transmission system; establishing multiple characteristic constraint points for the finite element model, the characteristic constraint points at least include: a driving wheel misalignment extraction point, a driven wheel misalignment extraction point, wherein the driving wheel misalignment extraction point is located at a first rigid section preset on the driving wheel shaft and coupled to the first rigid section, and the driven wheel misalignment extraction point is located at a second rigid section preset on the driven wheel shaft and coupled to the second rigid section; obtaining first spatial information, the first spatial information at least includes: the spatial position of the driving wheel misalignment extraction point The method comprises the following steps: determining the spatial position of the extraction point of the driving wheel misalignment and the spatial position of the extraction point of the driven wheel misalignment; applying a load to the finite element model so that the finite element model deforms under the load; obtaining second spatial information after the finite element model is deformed, wherein the second spatial information at least includes: the spatial position of the extraction point of the driving wheel misalignment following the displacement of the driving wheel shaft, and the spatial position of the extraction point of the driven wheel misalignment following the displacement of the driven wheel shaft; determining the gear misalignment according to the first spatial information and the second spatial information, wherein the gear misalignment includes at least one of the following: the axial misalignment of the driven wheel, the axial misalignment of the driving wheel, the offset misalignment, and the axis angle misalignment.

[0062] In the above scheme, the finite element simulation model is used to obtain the installation error value, which can handle complex engineering design tasks and provide highly accurate results.

[0063] In some embodiments, step S20 includes:

[0064] The installation error value is input into the finite element simulation model to obtain the single misalignment transmission error output by the finite element simulation model.

[0065] As an implementation method, GEMS (Gleason Engineering & Manufacturing System), as a professional finite element software specifically for gear design, analysis and optimization, can be used to obtain single misalignment transmission error.

[0066] In the above scheme, the finite element simulation model can also be used to obtain the single misalignment transmission error, which can quickly obtain the single misalignment transmission error and improve the process processing speed of analyzing the sensitivity of gear transmission error.

[0067] An embodiment of the present application also provides a computer program product, including computer program instructions, which, when read and executed by a processor, execute the methods provided by the above-mentioned method embodiments.

[0068] like Figure 2 As shown, Figure 2A schematic diagram of the structure of an electronic device provided for an embodiment of the present application includes: a processor 201, a memory 202 and a bus 203, wherein the processor 201 and the memory 202 communicate with each other through the bus 203; the memory 202 stores program instructions that can be executed by the processor 201, and the processor 201 calls the program instructions to execute the methods provided by the above-mentioned method embodiments.

[0069] Among them, the processor 201 includes one or more (only one is shown in the figure), which can be an integrated circuit chip with signal processing capabilities. The above-mentioned processor 201 can be a general-purpose processor, including a central processing unit (CPU), a micro control unit (MCU), a network processor (NP) or other conventional processors; it can also be a dedicated processor, including a neural network processor (NPU), a graphics processor (GPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. In addition, when there are multiple processors 201, some of them can be general-purpose processors and the other part can be dedicated processors.

[0070] The memory 202 includes one or more (only one is shown in the figure), which can be, but not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), etc. The processor 201 and other possible components can access the memory 202 and read and / or write data therein.

[0071] In particular, one or more computer program instructions may be stored in the memory 202, and the processor 201 may read and execute these computer program instructions to implement the weak password scanning behavior identification method provided in the embodiment of the present application.

[0072] The bus 203 includes one or more (only one is shown in the figure), which can be used to communicate directly or indirectly with other devices to interact with data. The bus 203 may include devices for wired wireless communication, such as optical fiber, serial peripheral interface (Serial Peripheral Interface, referred to as SPI) module, integrated circuit bus (Inter-Integrated Circuit, referred to as I2C), etc., and may also include devices for wireless communication, such as Bluetooth module, Wi-Fi module, mobile communication module (such as 4G, 5G module), etc.

[0073] Understandably, Figure 2 The structure shown is for illustration only. The electronic device may also include Figure 2 More or fewer components as shown, or with Figure 2 Different structures are shown. Figure 2 The components shown in the figure can be implemented by hardware, software or a combination thereof. The electronic device may be a physical device, such as a switch, a router, a server, a PC, etc., or a virtual device, such as a virtual machine, a virtualized container, etc. Moreover, the electronic device is not limited to a single device, but may also be a combination of multiple devices or a cluster consisting of a large number of devices.

[0074] An embodiment of the present application also provides a computer-readable storage medium, including: the computer-readable storage medium stores computer instructions, and the computer instructions enable the computer to execute the methods provided by the above-mentioned method embodiments.

[0075] In addition, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0076] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0077] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sensitivity analysis method for gear transmission error, characterized in that: include: Acquire multiple installation error values ​​corresponding to the gear in the current driving state, wherein the installation error value is obtained by measuring at least one installation error parameter of the gear under multiple torque conditions, and the current driving state includes forward drive and reverse drive; Determine a plurality of single misalignment transmission errors corresponding to the plurality of torque conditions according to the installation error value corresponding to each torque condition; For each single misalignment transmission error, a plurality of variation coefficients respectively corresponding to the single misalignment transmission errors are determined according to the single misalignment transmission error and the zero position transmission error, wherein the zero position transmission error is the transmission error of the gear without the influence of the installation error parameter; A transmission error sensitivity coefficient of the gear in the current driving state is determined according to the multiple variation coefficients, and the transmission error sensitivity coefficient is used to characterize the sensitivity of the transmission error of the gear to the installation error parameter.

2. The method according to claim 1, characterized in that Determining the transmission error sensitivity coefficient of the gear in the current driving state according to the plurality of variation coefficients includes: An average value of a plurality of the variation coefficients is determined as the transmission error sensitivity coefficient.

3. The method according to claim 1, characterized in that The step of determining, for each single misalignment transmission error, a plurality of variation coefficients corresponding to the single misalignment transmission errors according to the single misalignment transmission error and the zero position transmission error, comprises: For each single misalignment transmission error, the quotient of the absolute value of the difference between the single misalignment transmission error and the zero position transmission error and the zero position transmission error is determined as the variation coefficient corresponding to the single misalignment transmission error.

4. The method according to claim 1, characterized in that: After determining the transmission error sensitivity coefficient of the gear in the current driving state according to the plurality of variation coefficients, the method further includes: The sensitivity of the transmission error of the gear to the installation error parameter is analyzed according to the transmission error sensitivity coefficient, wherein the larger the transmission error sensitivity coefficient is, the greater the influence of the installation error parameter on the transmission error is, and vice versa.

5. The method according to claim 1, characterized in that The installation error parameter includes at least one of the following: an axial misalignment of a driven wheel, an axial misalignment of a driving wheel, an offset misalignment, and an axial angle misalignment.

6. The method according to claim 1, characterized in that The obtaining of multiple installation error values ​​corresponding to the gears in the current driving state includes: The multiple installation error values ​​corresponding to the gear in the current driving state are obtained from a finite element simulation model including the gear.

7. The method according to claim 6, characterized in that The determining, according to the installation error value corresponding to each torque working condition, a plurality of single misalignment transmission errors corresponding to the plurality of torque working conditions comprises: The installation error value is input into the finite element simulation model to obtain the single misalignment transmission error output by the finite element simulation model.

8. A computer program product, characterized in that The method comprises computer program instructions, and when the computer program instructions are read and executed by a processor, the method according to any one of claims 1 to 7 is executed.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the processor and the memory communicate with each other via the bus; The memory stores program instructions executable by the processor, and the processor can execute the method according to any one of claims 1 to 7 by calling the program instructions.

10. A computer-readable storage medium, characterized in that: include: The computer-readable storage medium stores computer instructions, and the computer instructions enable the computer to execute the method according to any one of claims 1 to 7.

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