Gear noise prevention method, device, equipment and storage medium

Abstract

The application provides a gear noise prevention method, device, equipment and storage medium. It relates to the technical field of vehicles. The method comprises the following steps: acquiring a rotation speed signal of a target gear in a non-load state, the rotation speed signal comprising vibration signals of multiple frequencies, and the target gear being a gear of a speed change input shaft of a vehicle; determining a target vibration signal corresponding to a target frequency from the vibration signals of the multiple frequencies, the target frequency being a resonance frequency of the target gear and the vehicle; determining a vibration energy value corresponding to the target vibration signal; and converting the target gear into a load state if the vibration energy value is greater than a preset energy value. Since the target vibration signal is a vibration signal corresponding to the resonance frequency of the target gear and the vehicle, the strength of the gear noise can be accurately prevented through the vibration signal corresponding to the resonance frequency which has a relatively strong correlation with the noise, thereby improving the accuracy of preventing the generation of the gear noise.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, and particularly relates to a gear noise prevention method and device, equipment and a storage medium. BACKGROUND

[0002] In recent years, consumers have higher and higher requirements for the comfort of automobiles. Gear knock noise has obvious sound level jump phenomenon and is easily recognized by human ears, and is a main noise source of a power transmission system in a low speed area. Therefore, it is necessary to prevent the generation of gear knock noise.

[0003] In the prior art, the generation of gear knock noise is prevented by the size of the gear knock force. The specific method is as follows: the knock force of gear knock is monitored, when the knock force is greater than a preset knock force, it is determined that the generated gear knock noise is large, and the noise is reduced by changing the gear speed.

[0004] However, the present application finds that the prior art at least has the following technical problems: since the noise size and the size of the knock force are not positively correlated, it is possible that the knock force of gear knock is large and the noise is small, so the accuracy of preventing gear knock noise by the above method is low. SUMMARY

[0005] The present application provides a gear noise prevention method, device, equipment and storage medium, which can improve the accuracy of preventing gear noise.

[0006] In a first aspect, the present application provides a gear noise prevention method, comprising:

[0007] obtaining a speed signal of a target gear in a non-load state, the speed signal comprising a plurality of frequency vibration signals, and the target gear being a gear of a transmission input shaft of a vehicle;

[0008] determining a target vibration signal corresponding to a target frequency from the plurality of frequency vibration signals, the target frequency being a resonance frequency of the target gear and the vehicle;

[0009] determining a vibration energy value corresponding to the target vibration signal;

[0010] if the vibration energy value is greater than a preset energy value, converting the target gear to a load state.

[0011] In a possible design, the determination of the vibration energy value corresponding to the target vibration signal comprises: determining a vibration amplitude value corresponding to the target vibration signal; obtaining a moment of inertia of the target gear and an angular velocity of rotation of the target gear; and determining the vibration energy value corresponding to the target vibration signal based on the vibration amplitude value, the moment of inertia and the angular velocity of rotation.

[0012] In one possible design, determining the vibration amplitude corresponding to the target vibration signal includes: acquiring the number of multiple sampling points of the rotational speed signal collected within a preset time period; determining the discrete Fourier coefficients corresponding to each sampling point; and determining the vibration amplitude corresponding to the target vibration signal based on the discrete Fourier coefficients corresponding to each sampling point and the target vibration signal.

[0013] In one possible design, determining the vibration energy value corresponding to the target vibration signal based on the vibration amplitude, the moment of inertia, and the angular velocity includes: determining the product of the vibration amplitude and the angular velocity; determining the squared difference between the product and the angular velocity; and determining the vibration energy corresponding to the target vibration signal based on the product of the squared difference and the moment of inertia.

[0014] In one possible design, determining the target vibration signal corresponding to the target frequency from the vibration signals of the plurality of frequencies includes: determining the target vibration signal corresponding to the target frequency from the vibration signals of the plurality of frequencies using a peak filter.

[0015] In one possible design, determining the target vibration signal corresponding to the target frequency from the vibration signals of the plurality of frequencies using a peak filter includes: determining the gain coefficient of the peak filter; determining the scheduling period of the rotational speed signal, the scheduling period being used to represent the time interval between two adjacent rotational speed signals; and determining the target vibration signal corresponding to the target frequency from the vibration signals of the plurality of frequencies based on the gain coefficient, the scheduling period, and the target frequency.

[0016] In one possible design, the method further includes: applying a preset pulse force to the wheel end via a rotating hub, wherein the wheel end is linked with the target gear; acquiring a test speed signal of the target gear under non-load conditions, wherein the test speed signal includes test vibration signals of multiple frequencies; and determining the resonance frequency corresponding to the resonance signal from the test vibration signals of the multiple frequencies.

[0017] Secondly, this application provides a gear noise prevention device, comprising:

[0018] The acquisition module is used to acquire the rotational speed signal of the target gear under non-load conditions. The rotational speed signal includes vibration signals of multiple frequencies. The target gear is the input shaft gear of the vehicle's gearbox.

[0019] The first determining module is used to determine the target vibration signal corresponding to the target frequency from the vibration signals of the plurality of frequencies, wherein the target frequency is the resonance frequency of the target gear and the vehicle;

[0020] The second determining module is used to determine the vibration energy value corresponding to the target vibration signal;

[0021] The conversion module is used to convert the target gear to a load-bearing state if the vibration energy value is greater than a preset energy value.

[0022] Thirdly, the present invention provides an electronic device, comprising: at least one processor and a memory;

[0023] The memory stores computer-executed instructions;

[0024] The at least one processor executes computer execution instructions stored in the memory, causing the at least one processor to perform the gear noise prevention method as described in the first aspect above.

[0025] Fourthly, the present invention provides a computer storage medium storing computer execution instructions, wherein when a processor executes the computer execution instructions, the gear noise prevention method described in the first aspect above is implemented.

[0026] Fifthly, this application also provides a computer program product comprising a computer program stored in a computer-readable storage medium, wherein at least one processor can read the computer program from the computer-readable storage medium, and when the at least one processor executes the computer program, it implements the gear noise prevention method described in the first aspect above.

[0027] The gear noise prevention method, apparatus, equipment, and storage medium provided in this application first determine the target vibration signal corresponding to a specific frequency that causes resonance, and then determine whether there is a risk of noise generation by using the vibration energy value of the target vibration signal. Since the target vibration signal is the vibration signal corresponding to the resonance frequency of the target gear and the vehicle, the intensity of gear noise can be accurately prevented by using the vibration signal corresponding to the resonance frequency that is strongly correlated with noise, thereby improving the accuracy of preventing gear noise generation. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0029] Figure 1 The process flow of the gear noise prevention method provided in the embodiments of the present invention Figure One ;

[0030] Figure 2 A schematic diagram of the power system of a vehicle provided in an embodiment of the present invention;

[0031] Figure 3The process flow of the gear noise prevention method provided in the embodiments of the present invention Figure Two ;

[0032] Figure 4 The process flow of the gear noise prevention method provided in the embodiments of the present invention Figure Three ;

[0033] Figure 5 A schematic diagram of the gear noise prevention device provided in an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention.

[0035] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0036] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0037] In recent years, consumers have increasingly higher demands for automotive comfort. Gear vibration and knocking noise in transmissions and reducers directly affect the overall performance and comfort of a vehicle. Gear knocking noise is a type of noise from gear transmissions and reducers; it is an impact phenomenon occurring on meshing non-load-bearing gear pairs. These non-load-bearing gears have no constraint in their rotational direction and may collide with each other under certain conditions, thus generating gear knocking noise.

[0038] For example, in an electric vehicle powertrain system with a disengagement device, the differential input shaft gear meshes with the differential intermediate shaft gear, forming a gear pair; another gear on the differential intermediate shaft meshes with the differential output shaft gear, forming another gear pair. When the disengagement device is disengaged, the gears on both gear pairs rotate with the rotation of the wheels, and are all meshing non-load-bearing gear pairs. When the vehicle is in motion, vibrations transmitted from the road surface or from components such as the vehicle body can cause resonance in the powertrain system, resulting in gear knocking. Because gear knocking noise exhibits a significant sound level jump, it is easily detected by the human ear and is a major noise source in the low-speed range of the powertrain system. Therefore, it is necessary to prevent the generation of gear knocking noise.

[0039] In existing technologies, gear knocking noise is prevented by controlling the magnitude of the gear knocking force. Specifically, the knocking force is monitored; when it exceeds a preset force, the noise is considered excessive, and the gear speed is adjusted to reduce it. However, the noise level and knocking force are not directly correlated. Therefore, it's possible for a high knocking force to result in low noise, making this method inaccurate for preventing gear knocking noise.

[0040] To address the aforementioned technical problems, this application proposes the following technical concept: First, determine the target vibration signal corresponding to the specific frequency that causes resonance. Then, determine whether there is a risk of noise generation by using the vibration energy value of the target vibration signal. Since the target vibration signal is the vibration signal corresponding to the resonance frequency of the target gear and the vehicle, the intensity of gear noise can be accurately prevented by using the vibration signal corresponding to the resonance frequency that is strongly correlated with noise, thereby improving the accuracy of preventing gear noise generation.

[0041] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of the relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation portals are provided for users to choose to authorize or refuse.

[0042] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0043] This application provides a method for preventing gear noise. The method described in this application can be implemented by an electronic device. Figure 1 Flowchart of the gear noise prevention method provided in the embodiments of this application Figure One .like Figure 1 As shown, the methods for preventing gear noise include:

[0044] Step S101: Obtain the rotational speed signal of the target gear under non-load conditions. The rotational speed signal includes vibration signals of multiple frequencies. The target gear is the input shaft gear of the vehicle's gearbox.

[0045] In embodiments of the present invention, such as Figure 2 As shown, Figure 2This is a schematic diagram of the powertrain system of a vehicle provided in an embodiment of the present invention. The target gear is the input shaft gear of the vehicle's gearbox. One end of the gearbox input shaft gear is connected to the vehicle's differential via an intermediate shaft, thereby driving the wheels to rotate through the differential. The other end is connected to a motor via a disengagement device. When the disengagement device is engaged, the motor can transmit power to the gearbox input shaft gear, which is in a loaded state. When the disengagement device is disengaged, power cannot be transmitted, and the gearbox input shaft gear is in a non-loaded state.

[0046] Optionally, a speed sensor is installed on the vehicle. Accordingly, this step involves periodically acquiring the speed signal of the target gear under non-load conditions using the speed sensor. In this embodiment of the invention, the period for acquiring the speed signal is not specifically limited. For example, the period can be 1 / 50 second, 1 / 100 second, 1 / 200 second, etc.

[0047] Step S102: Determine the target vibration signal corresponding to the target frequency from multiple vibration signals. The target frequency is the resonance frequency between the target gear and the vehicle.

[0048] In this embodiment of the invention, the resonance frequency between the target gear and the vehicle is related to the vehicle model. For a given vehicle model, the resonance frequency between the vehicle and the target gear is fixed. Optionally, the electronic device stores a correspondence between vehicle models and resonance frequencies. Accordingly, this step involves: obtaining the current vehicle model; determining the resonance frequency between the current vehicle and the target gear from the stored correspondence between vehicle models and resonance frequencies; and determining the target vibration signal corresponding to the resonance frequency from vibration signals of multiple frequencies.

[0049] Step S103: Determine the vibration energy value corresponding to the target vibration signal.

[0050] In this embodiment of the invention, the vibration energy value is used to represent the vibration state of the target gear. The greater the vibration energy, the more violently the target gear vibrates, and the greater the noise generated.

[0051] Step S104: If the vibration energy value is greater than the preset energy value, then the target gear is converted to a load-bearing state.

[0052] In this embodiment of the invention, the value of the preset energy value is not specifically limited. Optionally, the target gear is converted to a load-bearing state by a disengagement device. Accordingly, this step is as follows: if the vibration energy value is greater than the preset energy value, the disengagement device is controlled to switch to a connected state, at which time the motor can transmit power to the input shaft gear of the gearbox, and the input shaft gear of the gearbox is in a load-bearing state.

[0053] This application provides a method for preventing gear noise. First, the target vibration signal corresponding to the specific frequency that causes resonance is determined. Then, the vibration energy value of the target vibration signal is used to determine whether there is a risk of noise generation. Since the target vibration signal is the vibration signal corresponding to the resonance frequency of the target gear and the vehicle, the intensity of gear noise can be accurately prevented by the vibration signal corresponding to the resonance frequency that is strongly correlated with noise, thereby improving the accuracy of preventing gear noise generation.

[0054] Figure 3 The process flow of the gear noise prevention method provided in the embodiments of the present invention Figure Two In this embodiment of the invention, in Figure 1 Based on the provided embodiments, the specific implementation method for determining the vibration energy value corresponding to the target vibration signal in S103 is described in detail. For example... Figure 3 As shown, the method includes:

[0055] Step S301: Determine the vibration amplitude corresponding to the target vibration signal.

[0056] In this embodiment of the invention, the vibration amplitude corresponding to the target vibration signal can be determined by discrete Fourier transform. Accordingly, determining the vibration amplitude corresponding to the target vibration signal can be achieved through the following steps (1) to (3).

[0057] (1) Obtain the number of multiple sampling points of the speed signal collected within a preset time period.

[0058] The preset duration can be the period corresponding to the resonant frequency. For example, if the resonant frequency is f, the preset duration is T = 1 / f. The number of sampling points is related to the preset acquisition frequency. For example, if the acquisition frequency is Ts, the number of sampling points is N, N = T / Ts, that is, N = 1 / (f*Ts).

[0059] (2) Determine the discrete Fourier coefficients corresponding to each sampling point.

[0060] Optionally, the discrete Fourier coefficients include real Fourier coefficients and imaginary Fourier coefficients. In this embodiment of the invention, the real Fourier coefficients corresponding to each sampling point are determined by the following formula:

[0061] Formula 1:

[0062]

[0063] Among them, DFT CosRe Let represent the real Fourier coefficients corresponding to the (k+1)th sampling point, and N represent the number of sampling points.

[0064] The imaginary Fourier coefficients corresponding to each sampling point are determined using the following formula 2;

[0065] Formula 2:

[0066]

[0067] Among them, DFT CosRe Let represent the imaginary Fourier coefficients corresponding to the (k+1)th sampling point, and N represent the number of sampling points.

[0068] (3) Based on the discrete Fourier coefficients and the target vibration signal corresponding to each sampling point, determine the vibration amplitude corresponding to the target vibration signal.

[0069] The vibration amplitude is the maximum value corresponding to the target vibration signal. Optionally, this step is as follows: based on the discrete Fourier coefficients corresponding to each sampling point and the target vibration signal, the vibration amplitude corresponding to the target vibration signal is determined using the following formula three;

[0070] Formula 3:

[0071]

[0072] Where A represents the vibration amplitude, y(k+1) represents the target vibration signal corresponding to the (k+1)th sampling point, and N represents the number of multiple sampling points.

[0073] In this embodiment of the invention, the vibration amplitude corresponding to the target vibration signal is determined by discrete Fourier transform, which can filter out noise signals in the target vibration signal and improve the accuracy of the target vibration signal corresponding to the resonance frequency.

[0074] Step S302: Obtain the moment of inertia and angular velocity of the target gear.

[0075] Optionally, the electronic device stores a correspondence between gear identifiers and moments of inertia. Accordingly, the step of obtaining the moment of inertia of the target gear is as follows: obtain the gear identifier of the target gear, and determine the moment of inertia of the target gear from the stored correspondence between gear identifiers and moments of inertia. The gear identifier is used to distinguish different gear models. For example, the gear identifier can be a gear model number or a code corresponding to the gear model number.

[0076] In this embodiment of the invention, the rotational angular velocity of the target gear can be determined by the rotational speed corresponding to the target vibration signal.

[0077] Step S303: Determine the vibration energy value corresponding to the target vibration signal based on the vibration amplitude, moment of inertia and angular velocity.

[0078] Optionally, this step involves: determining the product of the vibration amplitude and the rotational angular velocity; determining the squared difference between the product and the rotational angular velocity; and determining the vibration energy corresponding to the target vibration signal based on the product of the squared difference and the moment of inertia.

[0079] For example, based on the vibration amplitude, moment of inertia, and angular velocity, the vibration energy value corresponding to the target vibration signal is determined using the following formula four;

[0080] Formula 4:

[0081]

[0082] Among them, J g The value represents the vibration energy, A represents the vibration amplitude, and ω represents the rotational angular velocity.

[0083] Figure 4 The process flow of the gear noise prevention method provided in the embodiments of the present invention Figure Three In this embodiment of the invention, in Figure 1 Based on the provided embodiments, the specific implementation method for determining the target vibration signal corresponding to the target frequency from vibration signals of multiple frequencies in S102 is described in detail. Optionally, as Figure 4 As shown, the method for determining the target vibration signal corresponding to the target frequency from vibration signals of multiple frequencies using a peak filter includes:

[0084] Step S401: Determine the gain coefficient of the peak filter.

[0085] In this embodiment of the invention, the gain coefficient of the peak filter is related to the model of the peak filter installed in the vehicle. Optionally, this step involves: obtaining the model of the peak filter currently installed in the vehicle, and determining the corresponding gain coefficient for the current vehicle from the correspondence between the peak filter model and the gain coefficient.

[0086] It should be noted that the specific value of the gain coefficient can be determined based on the cutoff bandwidth of the vibration signal. The gain coefficient is used to determine the degree of attenuation of frequency components other than the peak frequency.

[0087] For example, when the gain coefficient g = 0.952, at 5% of the sampling frequency bandwidth, the amplitude of the vibration signal of frequency components other than the peak frequency is attenuated by 3dB, that is, the amplitude attenuation at 5% of the sampling frequency bandwidth.

[0088] When the gain coefficient g = 0.909, at 10% of the sampling frequency bandwidth, the amplitude of the vibration signal of frequency components other than the peak frequency is attenuated by 3dB, that is, the amplitude attenuation at 10% of the sampling frequency bandwidth.

[0089] When the gain coefficient g = 0.869, at 15% of the sampling frequency bandwidth, the amplitude of the vibration signal of frequency components other than the peak frequency is attenuated by 3dB, that is, the amplitude attenuation at 15% of the sampling frequency bandwidth.

[0090] When the gain coefficient g = 1, the vibration signal passes through completely without filtering.

[0091] Step S402: Determine the scheduling period of the speed signal. The scheduling period is used to represent the time interval between two adjacent speed signals.

[0092] In this embodiment of the invention, the scheduling period of the rotational speed signal is used to represent the reciprocal of the frequency at which the rotational speed signal is acquired. For example, if the scheduling period is 100Hz, then 100 rotational speed signals are acquired per second.

[0093] Step S403: Based on the gain coefficient, scheduling period and target frequency, determine the target vibration signal corresponding to the target frequency from vibration signals of multiple frequencies.

[0094] In this embodiment of the invention, the peak filter is a second-order narrow-bandwidth filter. Optionally, this step involves: determining the acquisition duration of the vibration signal based on the target frequency; and determining the target vibration signal corresponding to the target frequency from vibration signals of multiple frequencies based on the gain coefficient, scheduling period, and acquisition duration. For example, the reciprocal of the acquisition duration is set as the target frequency, i.e., T = 1 / f.

[0095] Specifically, based on the gain coefficient, scheduling period, and acquisition duration, the target vibration signal corresponding to the target frequency is determined from vibration signals of multiple frequencies. This includes:

[0096] Based on the gain coefficient, scheduling period, and acquisition duration, the target vibration signal corresponding to the target frequency is determined from vibration signals of multiple frequencies using the following formula five.

[0097] Formula 5:

[0098]

[0099] Where g represents the gain coefficient, T represents the acquisition duration, Ts represents the scheduling period, x(k) represents the vibration signal acquired at the kth sampling point, the number of sampling points is T / Ts, and y(k) represents the target vibration signal corresponding to the target frequency.

[0100] It should be noted that before preventing gear noise, the resonant frequency of the target gear and the vehicle can be determined by testing vibration signals. The specific steps are as follows: a preset pulse force is applied to the wheel end through a rotating hub, linking the wheel end with the target gear; the test rotational speed signal of the target gear under non-load conditions is acquired, and this test rotational speed signal includes test vibration signals of multiple frequencies; the resonant frequency corresponding to the resonance signal is determined from the multiple frequency test vibration signals. For example, the resonant frequency corresponding to the resonance signal in the test vibration signal shows a large amplitude variation, exhibiting a wave-like pattern; while the test vibration signals in other frequency bands show a smoother, linear variation.

[0101] Figure 5 This is a schematic diagram of the gear noise prevention device provided in an embodiment of this application. Figure 5 As shown, the gear noise prevention device includes: an acquisition module 501, a first determination module 502, a second determination module 503, and a conversion module 504.

[0102] The acquisition module 501 is used to acquire the rotational speed signal of the target gear under non-load conditions. The rotational speed signal includes vibration signals of multiple frequencies. The target gear is the input shaft gear of the vehicle's gearbox.

[0103] The first determining module 502 is used to determine the target vibration signal corresponding to the target frequency from vibration signals of multiple frequencies, wherein the target frequency is the resonance frequency between the target gear and the vehicle.

[0104] The second determining module 503 is used to determine the vibration energy value corresponding to the target vibration signal;

[0105] The conversion module 504 is used to convert the target gear into a load-bearing state if the vibration energy value is greater than the preset energy value.

[0106] In one possible design, the second determining module 503 determines the vibration energy value corresponding to the target vibration signal, specifically including: determining the vibration amplitude corresponding to the target vibration signal; acquiring the rotational inertia and rotational angular velocity of the target gear; and determining the vibration energy value corresponding to the target vibration signal based on the vibration amplitude, rotational inertia, and rotational angular velocity.

[0107] In one possible design, the second determining module 503 determines the vibration amplitude corresponding to the target vibration signal, specifically including: acquiring the number of multiple sampling points of the acquired rotational speed signal within a preset time period; determining the discrete Fourier coefficients corresponding to each sampling point; and determining the vibration amplitude corresponding to the target vibration signal based on the discrete Fourier coefficients corresponding to each sampling point and the target vibration signal.

[0108] In one possible design, the second determining module 503 determines the vibration energy value corresponding to the target vibration signal based on the vibration amplitude, moment of inertia, and angular velocity. Specifically, this includes: determining the product of the vibration amplitude and the angular velocity; determining the squared difference between the product and the angular velocity; and determining the vibration energy corresponding to the target vibration signal based on the product of the squared difference and the moment of inertia.

[0109] In one possible design, the first determining module 502 determines the target vibration signal corresponding to the target frequency from vibration signals of multiple frequencies, specifically including: determining the target vibration signal corresponding to the target frequency from vibration signals of multiple frequencies through a peak filter.

[0110] In one possible design, the first determining module 502 determines the target vibration signal corresponding to the target frequency from vibration signals of multiple frequencies using a peak filter. Specifically, this includes: determining the gain coefficient of the peak filter; determining the scheduling period of the rotational speed signal, where the scheduling period is used to represent the time interval between two adjacent rotational speed signals; and determining the target vibration signal corresponding to the target frequency from vibration signals of multiple frequencies based on the gain coefficient, the scheduling period, and the target frequency.

[0111] In one possible design, the device also includes a test module.

[0112] The testing module is used to apply a preset pulse force to the wheel end through the rotating hub, and the wheel end is linked with the target gear; to acquire the test speed signal of the target gear under non-load conditions, the test speed signal includes test vibration signals of multiple frequencies; and to determine the resonance frequency corresponding to the resonance signal from the test vibration signals of multiple frequencies.

[0113] The gear noise prevention device provided in this application embodiment can be used to implement the gear noise prevention method in the above embodiment. Its implementation principle and technical effect are similar, and will not be described again here.

[0114] It should be noted that the division of the various modules in the above device is merely a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, these modules can be implemented entirely in software via processing element calls; they can be fully implemented in hardware; or some modules can be implemented by processing element calls to software, while others are implemented in hardware. For example, the acquisition module 501 can be a separate processing element, or it can be integrated into a chip in the above device. Alternatively, it can be stored as program code in the memory of the above device, and its functions can be called and executed by a processing element of the device. The implementation of other modules is similar. Moreover, these modules can be fully or partially integrated together, or they can be implemented independently. The processing element here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above modules can be completed through the integrated logic circuits in the hardware of the processor element or through software instructions.

[0115] Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 6 As shown, the electronic device may include: a transceiver 601, a processor 602, and a memory 603.

[0116] The processor 602 executes computer execution instructions stored in the memory, causing the processor 602 to perform the scheme in the above embodiments. The processor 602 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0117] The memory 603 is connected to the processor 602 via the system bus and completes communication between them. The memory 603 is used to store computer program instructions.

[0118] Transceiver 601 can be used to obtain the task to be run and its configuration information.

[0119] The system bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The system bus can be divided into address bus, data bus, control bus, etc. For ease of representation, only one thick line is used in the diagram, but this does not indicate that there is only one bus or one type of bus. Transceivers are used to enable communication between database access devices and other computers (e.g., clients, read-write libraries, and read-only libraries). Memory may include random access memory (RAM) and may also include non-volatile memory.

[0120] The electronic device provided in this application embodiment can be the computer device described in the above embodiments.

[0121] This application also provides a chip for executing instructions, which is used to implement the gear noise prevention method described in the above embodiments.

[0122] This application also provides a computer-readable storage medium storing computer instructions that, when executed on a computer, cause the computer to perform the gear noise prevention method described above.

[0123] This application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. At least one processor can read the computer program from the computer-readable storage medium. When the at least one processor executes the computer program, it can implement the technical solution of the gear noise prevention method in the above embodiments.

[0124] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0125] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A method for preventing gear noise, characterized in that, include: The rotational speed signal of the target gear under non-load conditions is acquired. The rotational speed signal includes vibration signals of multiple frequencies. The target gear is the input shaft gear of the vehicle's gearbox. The target vibration signal corresponding to the target frequency is determined from the vibration signals of the plurality of frequencies, wherein the target frequency is the resonance frequency between the target gear and the vehicle; Determine the vibration energy value corresponding to the target vibration signal; If the vibration energy value is greater than the preset energy value, the target gear will be converted to a load-bearing state.

2. The method according to claim 1, characterized in that, Determining the vibration energy value corresponding to the target vibration signal includes: Determine the vibration amplitude corresponding to the target vibration signal; Obtain the moment of inertia and angular velocity of the target gear; Based on the vibration amplitude, the moment of inertia, and the angular velocity, the vibration energy value corresponding to the target vibration signal is determined.

3. The method according to claim 2, characterized in that, Determining the vibration amplitude corresponding to the target vibration signal includes: Obtain the number of multiple sampling points for acquiring the rotational speed signal within a preset time period; Determine the discrete Fourier coefficients corresponding to each sampling point; Based on the discrete Fourier coefficients corresponding to each sampling point and the target vibration signal, the vibration amplitude corresponding to the target vibration signal is determined.

4. The method according to claim 2, characterized in that, Determining the vibration energy value corresponding to the target vibration signal based on the vibration amplitude, the moment of inertia, and the angular velocity includes: Determine the sum of the vibration amplitude and the rotational angular velocity; Determine the squared difference between the sum and the rotational angular velocity; The vibration energy corresponding to the target vibration signal is determined based on the product of the squared difference and the moment of inertia.

5. The method according to claim 1, characterized in that, Determining the target vibration signal corresponding to the target frequency from the plurality of vibration signals includes: The target vibration signal corresponding to the target frequency is determined from the vibration signals of the plurality of frequencies using a peak filter.

6. The method according to claim 5, characterized in that, The step of determining the target vibration signal corresponding to the target frequency from the vibration signals of the plurality of frequencies using a peak filter includes: Determine the gain coefficient of the peak filter; The scheduling period of the speed signal is determined, and the scheduling period is used to represent the time interval between two adjacent speed signals; Based on the gain coefficient, the scheduling period, and the target frequency, the target vibration signal corresponding to the target frequency is determined from the vibration signals of the plurality of frequencies.

7. The method according to any one of claims 1-6, characterized in that, Also includes: A preset pulse force is applied to the wheel end by rotating the hub, and the wheel end is linked with the target gear; Acquire the test speed signal of the target gear under non-load conditions, the test speed signal including test vibration signals of multiple frequencies; The resonant frequency corresponding to the resonant signal is determined from the test vibration signals of the multiple frequencies.

8. A gear noise prevention device, characterized in that, include: The acquisition module is used to acquire the rotational speed signal of the target gear under non-load conditions. The rotational speed signal includes vibration signals of multiple frequencies. The target gear is the input shaft gear of the vehicle's gearbox. The first determining module is used to determine the target vibration signal corresponding to the target frequency from the vibration signals of the plurality of frequencies, wherein the target frequency is the resonance frequency of the target gear and the vehicle; The second determining module is used to determine the vibration energy value corresponding to the target vibration signal; The conversion module is used to convert the target gear to a load-bearing state if the vibration energy value is greater than a preset energy value.

9. An electronic device, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1-7.

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