CN115728064A - Method, device, equipment and storage medium for preventing gear noise - Google Patents
Method, device, equipment and storage medium for preventing gear noise Download PDFInfo
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Abstract
The application provides a gear noise prevention method, a gear noise prevention device, gear noise prevention equipment and a storage medium. Relates to the technical field of vehicles. The method comprises the following steps: acquiring a rotating speed signal of a target gear in a non-bearing state, wherein the rotating speed signal comprises vibration signals of multiple frequencies, and the target gear is an input shaft gear of a speed distribution box of a vehicle; determining a target vibration signal corresponding to a target frequency from the vibration signals of the multiple frequencies, wherein the target frequency is a resonance frequency of the target gear and the vehicle; determining a vibration energy value corresponding to the target vibration signal; and if the vibration energy value is greater than the preset energy value, converting the target gear into a bearing state. Since the target vibration signal is a 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 having a strong correlation with noise, and the accuracy of preventing the generation of gear noise is improved.
Description
Technical Field
The present application relates to the field of vehicle technologies, and in particular, to a method, an apparatus, a device, and a storage medium for preventing gear noise.
Background
In recent years, the demand for comfort of automobiles has been increasing for consumers. The gear knocking noise has an obvious sound level jump phenomenon, is very easy to be identified by human ears and is a main noise source of the power transmission system in a low-speed area, so that the gear knocking noise needs to be prevented.
In the prior art, the generation of gear knocking noise is prevented through the size of the gear knocking force. The specific method comprises the following steps: and monitoring the knocking force of the gear knocking, determining that the generated gear knocking noise is larger when the knocking force is larger than the preset knocking force, and reducing the noise by changing the rotating speed of the gear.
However, the inventors found that the prior art has at least the following technical problems: since the magnitude of the noise and the magnitude of the striking force are not positively correlated, the striking force of the gear striking may be large and the noise may be small, and therefore the accuracy of preventing the gear striking noise by the above method is low.
Disclosure of Invention
The application provides a method, a device, equipment and a storage medium for preventing gear noise, which can improve the accuracy of preventing the gear noise.
In a first aspect, the present application provides a gear noise prevention method, including:
acquiring a rotating speed signal of a target gear in a non-bearing state, wherein the rotating speed signal comprises vibration signals of multiple frequencies, and the target gear is an input shaft gear of a speed distribution box of a vehicle;
determining a target vibration signal corresponding to a target frequency from the vibration signals of the plurality of frequencies, wherein the target frequency is a resonance frequency of the target gear and the vehicle;
determining a vibration energy value corresponding to the target vibration signal;
and if the vibration energy value is greater than the preset energy value, converting the target gear into a bearing state.
In one possible design, the determining a vibration energy value corresponding to the target vibration signal includes: determining a vibration amplitude corresponding to the target vibration signal; acquiring the rotational inertia of the target gear and the rotational angular velocity of the target gear; and determining a vibration energy value corresponding to the target vibration signal based on the vibration amplitude, the moment of inertia and the rotation angular velocity.
In one possible design, the determining the vibration amplitude corresponding to the target vibration signal includes: acquiring the number of a plurality of sampling points for acquiring the rotating speed signal within a preset time length; determining a discrete Fourier coefficient corresponding to each sampling point; and determining the vibration amplitude corresponding to the target vibration signal based on the discrete Fourier coefficient corresponding to each sampling point and the target vibration signal.
In one possible design, the determining, based on the vibration amplitude, the moment of inertia, and the rotational angular velocity, a vibration energy value corresponding to the target vibration signal includes: determining a product of the vibration amplitude and the rotational angular velocity; determining a squared difference between said product and said rotational angular velocity; and determining the vibration energy corresponding to the target vibration signal based on the product of the square difference and the moment of inertia.
In one possible design, the determining a target vibration signal corresponding to a target frequency from the vibration signals of the plurality of frequencies includes: and determining a target vibration signal corresponding to the target frequency from the vibration signals of the plurality of frequencies through a peak value filter.
In one possible design, the determining, by a peak filter, a target vibration signal corresponding to a target frequency from the vibration signals of the plurality of frequencies includes: determining a gain factor of the peak filter; determining a scheduling period of the rotation speed signals, wherein the scheduling period is used for representing a time interval between two adjacent rotation speed signals; and determining a target vibration signal corresponding to the target frequency from the vibration signals of the multiple frequencies based on the gain coefficient, the scheduling period and the target frequency.
In one possible design, further comprising: applying a preset pulse acting force to a wheel end through a rotating hub, wherein the wheel end is linked with the target gear; acquiring a test rotating speed signal of the target gear in a non-bearing state, wherein the test rotating speed signal comprises test vibration signals with multiple frequencies; and determining a resonance frequency corresponding to the resonance signal from the test vibration signals of the plurality of frequencies.
In a second aspect, the present application provides a gear noise prevention apparatus comprising:
the system comprises an acquisition module, a transmission module and a control module, wherein the acquisition module is used for acquiring a rotating speed signal of a target gear in a non-bearing state, the rotating speed signal comprises vibration signals of multiple frequencies, and the target gear is an input shaft gear of a speed distribution box of a vehicle;
the first determination module is used for determining a target vibration signal corresponding to a target frequency from the vibration signals of the plurality of frequencies, wherein the target frequency is a resonance frequency of the target gear and the vehicle;
the second determining module is used for determining a vibration energy value corresponding to the target vibration signal;
and the conversion module is used for converting the target gear into a bearing state if the vibration energy value is greater than a preset energy value.
In a third aspect, the present invention provides an electronic device comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of gear noise prevention as described above in the first aspect.
In a fourth aspect, the present invention provides a computer storage medium having stored therein computer executable instructions, which when executed by a processor, implement the gear noise prevention method according to the first aspect.
In a fifth aspect, the present application further provides a computer program product, the computer program product comprising a computer program stored in a computer-readable storage medium, the computer program being readable by at least one processor from the computer-readable storage medium, the computer program being executable by the at least one processor to implement the method for preventing gear noise according to the first aspect.
According to the gear noise prevention method, the gear noise prevention device, the gear noise prevention equipment and the storage medium, the target vibration signal corresponding to the specific frequency causing the resonance is determined firstly, then whether the risk of generating the noise exists is determined according to the vibration energy value of the target vibration signal, and the gear noise intensity can be accurately prevented through the vibration signal corresponding to the resonance frequency with strong noise correlation as the target vibration signal is the vibration signal corresponding to the resonance frequency of the target gear and the vehicle, so that the gear noise generation prevention accuracy is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
FIG. 1 is a first flowchart of a gear noise prevention method according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a powertrain of a vehicle according to an embodiment of the present invention;
FIG. 3 is a second flowchart of a gear noise prevention method according to an embodiment of the present invention;
fig. 4 is a third flowchart of a gear noise prevention method according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a gear noise prevention apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims.
In recent years, consumer demands for automobile comfort have been increasing. The vibration and knocking noise of gears of the speed changer and the speed reducer can directly influence the overall working performance and comfort of the automobile. Gear rattle noise is one of the noises of gear transmissions and speed reducers, and is an impact phenomenon that occurs on a pair of meshing non-load-bearing gears that have no restriction in the rotational direction and may collide with each other under certain conditions, thereby generating gear rattle noise.
In an exemplary electric automobile power transmission system with a disconnecting device, a differential input shaft gear is meshed with a differential intermediate shaft gear to form a pair of gear pairs; the other gear on the differential intermediate shaft and the differential output shaft gear form another pair of gear pairs. In the disengaged state of the disengaging device, the gears on the two pairs of gear pairs rotate along with the rotation of the wheels, and are meshed with the non-bearing gear pairs. When a vehicle is running, vibration excitation transmitted from a road surface or vibration excitation transmitted from a vehicle body or other parts causes resonance of a power transmission system, thereby generating gear rattle. Since the gear rattle noise has an obvious sound level jump phenomenon, which is easily recognized by human ears, and is a main noise source of the power transmission system in a low speed region, it is necessary to prevent the generation of the gear rattle noise.
In the prior art, the generation of gear knocking noise is prevented through the size of the gear knocking force. The specific method comprises the following steps: and monitoring the knocking force of the gear knocking, determining that the generated gear knocking noise is larger when the knocking force is larger than the preset knocking force, and reducing the noise by changing the rotating speed of the gear. However, since the magnitude of the noise is not positively correlated with the magnitude of the striking force, the striking force of the gear striking may be large and the noise may be small, and therefore, the accuracy of preventing the gear striking noise by the above method is low.
In order to solve the technical problems, the application provides the following technical concepts: the method comprises the steps of firstly determining a target vibration signal corresponding to a specific frequency causing resonance, and then determining whether the risk of generating noise exists or not according to the vibration energy value of the target vibration signal.
It should be noted that, the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) referred to in the present application are information and data authorized by the user or fully authorized by each party, and the collection, use and processing of the related data need to comply with the relevant laws and regulations and standards of the relevant country and region, and are provided with corresponding operation entrances for the user to choose authorization or denial.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
The embodiment of the application provides a gear noise prevention method. The execution subject of the method of the embodiment of the application can be an electronic device. Fig. 1 is a first flowchart of a gear noise prevention method according to an embodiment of the present disclosure. As shown in fig. 1, the gear noise prevention method includes:
step S101, obtaining a rotating speed signal of a target gear in a non-bearing state, wherein the rotating speed signal comprises vibration signals with multiple frequencies, and the target gear is an input shaft gear of a speed distribution box of a vehicle.
In an embodiment of the present invention, as shown in fig. 2, fig. 2 is a schematic structural diagram of a power system of a vehicle according to an embodiment of the present invention, wherein a target gear is a gear of a distribution box input shaft of the vehicle, and one end of the gear of the distribution box input shaft is connected to a differential of the vehicle through an intermediate shaft, so as to drive wheels to rotate through the differential. The other end is connected with the motor through a disconnecting device. When the disconnecting device is connected, the motor can transmit power to the input shaft gear of the speed distribution box, and the input shaft gear of the speed distribution box is in a bearing state. When the disengaging gear is disengaged, power cannot be transmitted, and the input shaft gear of the speed distribution box is in a non-bearing state.
Optionally, a rotation speed sensor is mounted on the vehicle. Correspondingly, the method comprises the following steps: and periodically acquiring a rotating speed signal of the target gear in a non-bearing state through a rotating speed sensor. The period length for acquiring the rotation speed signal is not particularly limited in the embodiment of the present invention. Illustratively, the cycle duration may be 1/50 second, 1/100 second, 1/200 second, etc.
Step S102 is to determine a target vibration signal corresponding to a target frequency, which is a resonance frequency of the target gear and the vehicle, from among the vibration signals of the plurality of frequencies.
In the embodiment of the invention, the resonant frequency of the target gear and the vehicle is related to the model of the vehicle. A vehicle of a type having a fixed resonance frequency with a target gear. Optionally, a correspondence between the vehicle model and the resonant frequency is stored in the electronic device. Correspondingly, the method comprises the following steps: the method comprises the steps of obtaining a vehicle model of a current vehicle, determining the resonance frequency of the current vehicle and a target gear from a stored corresponding relation between the vehicle model and the resonance frequency, and determining a target vibration signal corresponding to the resonance frequency from vibration signals of multiple frequencies.
And step S103, determining a vibration energy value corresponding to the target vibration signal.
In the embodiment of the present invention, the vibration energy value is used to represent the vibration state of the target gear. The greater the vibration energy, the more violent the vibration of the target gear, and the greater the noise generated.
And step S104, if the vibration energy value is greater than the preset energy value, converting the target gear into a bearing state.
The numerical value of the preset energy value is not particularly limited in the embodiment of the present invention. Alternatively, the target gear is converted into a load-bearing state by a disengagement device. Correspondingly, the method comprises the following steps: if the vibration energy value is larger than the preset energy value, the disconnecting device is controlled to be converted into a connecting state, the motor can transmit power to the input shaft gear of the speed distribution box, and the input shaft gear of the speed distribution box is in a bearing state.
The application provides a method for preventing gear noise, which comprises the steps of firstly determining a target vibration signal corresponding to specific frequency causing resonance, and then determining whether a risk of generating the noise exists or not through the vibration energy value of the target vibration signal.
Fig. 3 is a second flowchart of a gear noise prevention method according to an embodiment of the present invention. In the embodiment of the present invention, on the basis of the embodiment provided in fig. 1, a detailed description is given to a specific implementation method for determining the vibration energy value corresponding to the target vibration signal in S103. As shown in fig. 3, the method includes:
and S301, determining the vibration amplitude corresponding to the target vibration signal.
In the embodiment of the invention, the vibration amplitude corresponding to the target vibration signal can be determined through discrete fourier transform. Accordingly, determining the vibration amplitude corresponding to the target vibration signal can be achieved through the following steps (1) to (3).
(1) And acquiring the number of a plurality of sampling points for acquiring the rotating speed signal within a preset time.
The preset duration may be a period corresponding to the resonant frequency. Illustratively, the resonant frequency is f, and the preset time period is T =1/f. The number of sampling points is related to a preset acquisition frequency. Illustratively, the acquisition frequency is Ts, and the number of sampling points is N, N = T/Ts, i.e., N = 1/(f × Ts).
(2) And determining the discrete Fourier coefficient corresponding to each sampling point.
Optionally, the discrete fourier coefficients comprise real fourier coefficients and imaginary fourier coefficients. In the embodiment of the invention, a real part Fourier coefficient corresponding to each sampling point is determined by the following formula I;
the formula I is as follows:
wherein, DFT CosRe And (3) representing a real Fourier coefficient corresponding to the (k + 1) th sampling point, wherein N represents the number of a plurality of sampling points.
Determining an imaginary Fourier coefficient corresponding to each sampling point by the following formula II;
the formula II is as follows:
wherein, DFT CosRe The imaginary fourier coefficient corresponding to the (k + 1) th sampling point is represented, and N represents the number of the plurality of sampling points.
(3) And determining the vibration amplitude corresponding to the target vibration signal based on the discrete Fourier coefficient corresponding to each sampling point and the target vibration signal.
The vibration amplitude is the maximum value corresponding to the target vibration signal. Optionally, the step is: determining a vibration amplitude corresponding to the target vibration signal through the following formula III based on the discrete Fourier coefficient and the target vibration signal corresponding to each sampling point;
the formula III is as follows:
wherein, 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 the plurality of sampling points.
In the embodiment of the invention, the vibration amplitude corresponding to the target vibration signal is determined through discrete Fourier transform, so that the noise signal in the target vibration signal can be filtered, and the accuracy of the target vibration signal corresponding to the resonance frequency is improved.
And step S302, acquiring the rotational inertia of the target gear and the rotational angular speed of the target gear.
Optionally, the electronic device stores therein a correspondence between the gear identification and the rotational inertia. Correspondingly, the step of obtaining the moment of inertia of the target gear comprises the following steps: and acquiring a gear identification of the target gear, and determining the rotational inertia of the target gear from the stored corresponding relation between the gear identification and the rotational inertia. Wherein, the gear identification is used for distinguishing the gear of different models. For example, the gear identification can be a gear model, and can also be a code corresponding to the gear model.
In the embodiment of the invention, the rotating angular speed of the target gear can be determined through the rotating speed corresponding to the target vibration signal.
Step S303, determining a vibration energy value corresponding to the target vibration signal based on the vibration amplitude, the rotational inertia and the rotational angular velocity.
Optionally, the step is: determining the product of the vibration amplitude and the rotation angular velocity; the squared difference between the true product and the rotational angular velocity; and determining the vibration energy corresponding to the target vibration signal based on the product of the square difference and the moment of inertia.
Exemplarily, determining a vibration energy value corresponding to the target vibration signal by the following formula four based on the vibration amplitude, the moment of inertia and the rotation angular velocity;
the formula IV is as follows:
wherein, J g Represents the vibration energy value, a represents the vibration amplitude, and ω represents the rotational angular velocity.
Fig. 4 is a flowchart of a method for preventing gear noise according to an embodiment of the present invention. In the embodiment of the present invention, based on the embodiment provided in fig. 1, a specific implementation method for determining a target vibration signal corresponding to a target frequency from vibration signals of multiple frequencies in S102 is described in detail. Alternatively, as shown in fig. 4, the method for determining a target vibration signal corresponding to a target frequency from vibration signals of a plurality of frequencies through a peak filter includes:
step S401, determining a gain coefficient of the peak filter.
In an embodiment of the invention, the gain factor of the peak filter is related to the model of the peak filter installed in the vehicle. Optionally, the step is: and obtaining the model of a peak filter installed in the current vehicle, and determining the gain coefficient corresponding to the current vehicle from the corresponding relation between the model of the peak filter and the gain coefficient.
It should be noted that the specific value of the gain factor may be determined according to the cut-off bandwidth of the vibration signal. The gain factor is used to determine the degree of attenuation of frequency components other than the peak frequency.
For example, when the gain factor g =0.952 is applied, the amplitude of the vibration signal of the frequency component other than the peak frequency is attenuated by 3dB at 5% of the sampling frequency bandwidth, that is, the amplitude is attenuated at 5% of the sampling frequency bandwidth
When the gain factor g =0.909, the amplitude of the vibration signal of the frequency component other than the peak frequency is attenuated by 3dB at 10% of the sampling frequency bandwidth, that is, the amplitude is attenuated at 10% of the sampling frequency bandwidth
When the gain factor g =0.869, the amplitude of the vibration signal of the frequency component other than the peak frequency is attenuated by 3dB at 15% of the sampling frequency bandwidth, that is, the amplitude is attenuated at 15% of the sampling frequency bandwidth
When the gain factor g =1, the vibration signal completely passes through, and the filtering process is not performed.
Step S402, determining a scheduling period of the rotation speed signals, wherein the scheduling period is used for representing a time interval between two adjacent rotation speed signals.
In the embodiment of the invention, the scheduling period of the rotation speed signal is used for representing the reciprocal of the frequency of acquiring the rotation speed signal. For example, with a scheduling period of 100Hz, 100 tachometer signals are acquired per second.
Step S403, determining a 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.
In an embodiment of the present invention, the peak filter is a second-order narrow bandwidth filter. Optionally, the step is: determining the acquisition time length for acquiring the vibration signal according to the target frequency; and determining a target vibration signal corresponding to the target frequency from the vibration signals of the multiple frequencies based on the gain coefficient, the scheduling period and the acquisition duration. Illustratively, the inverse of the acquisition duration is set to the target frequency, i.e., T =1/f.
The method includes the following steps of determining a target vibration signal corresponding to a target frequency from vibration signals of multiple frequencies based on a gain coefficient, a scheduling period and acquisition duration, and specifically includes:
determining a target vibration signal corresponding to the target frequency from the vibration signals of the multiple frequencies through a fifth formula based on the gain coefficient, the scheduling period and the acquisition duration;
the formula five is as follows:
wherein g represents a gain coefficient, T represents acquisition duration, ts represents a scheduling period, x (k) represents a vibration signal acquired by a kth sampling point, the number of the sampling points is T/Ts, and y (k) represents a target vibration signal corresponding to a target frequency.
It should be noted that before gear noise is prevented, the resonant frequency of the target gear and the vehicle may also be determined by testing the vibration signal. The method comprises the following specific steps: a preset pulse acting force is applied to the wheel end through the rotating hub, and the wheel end is linked with the target gear; acquiring a test rotating speed signal of a target gear in a non-bearing state, wherein the test rotating speed signal comprises test vibration signals with multiple frequencies; a resonance frequency corresponding to the resonance signal is determined from the test vibration signal at the plurality of frequencies. Illustratively, the amplitude of the change of the resonance frequency corresponding to the resonance signal in the test vibration signal is large and is in a wave shape; and the test vibration signals of other frequency bands change smoothly and are linear.
Fig. 5 is a schematic structural diagram of a gear noise prevention device according to an embodiment of the present application. As shown in fig. 5, the gear noise prevention apparatus includes: an acquisition module 501, a first determination module 502, a second determination module 503, and a conversion module 504.
The acquiring module 501 is configured to acquire a rotation speed signal of a target gear in a non-bearing state, where the rotation speed signal includes vibration signals of multiple frequencies, and the target gear is an input shaft gear of a speed distribution box of a vehicle;
a first determining module 502, configured to determine a target vibration signal corresponding to a target frequency from vibration signals of multiple frequencies, where the target frequency is a resonant frequency of a target gear and a vehicle;
a second determining module 503, configured to determine a vibration energy value corresponding to the target vibration signal;
the conversion module 504 is configured to convert the target gear into a load-bearing state if the vibration energy value is greater than a preset energy value.
In one possible design, the determining the vibration energy value corresponding to the target vibration signal by the second determining module 503 specifically includes: determining a vibration amplitude corresponding to the target vibration signal; acquiring the rotational inertia of the target gear and the rotational angular speed of the target gear; and determining a vibration energy value corresponding to the target vibration signal based on the vibration amplitude, the moment of inertia and the rotation angular velocity.
In a possible design, the determining, by the second determining module 503, a vibration amplitude corresponding to the target vibration signal specifically includes: acquiring the number of a plurality of sampling points for acquiring a rotating speed signal within a preset time; determining a discrete Fourier coefficient corresponding to each sampling point; and determining the vibration amplitude corresponding to the target vibration signal based on the discrete Fourier coefficient corresponding to each sampling point and the target vibration signal.
In one possible design, the determining module 503 determines the vibration energy value corresponding to the target vibration signal based on the vibration amplitude, the moment of inertia, and the rotation angular velocity, and specifically includes: determining the product of the vibration amplitude and the rotation angular velocity; the squared difference between the true product and the rotational angular velocity; and determining the vibration energy corresponding to the target vibration signal based on the product of the square difference and the moment of inertia.
In one possible design, the determining module 502 determines a target vibration signal corresponding to a target frequency from vibration signals of multiple frequencies, specifically including: and determining a target vibration signal corresponding to the target frequency from the vibration signals of the plurality of frequencies through a peak value filter.
In one possible design, the determining module 502 determines, by using a peak filter, a target vibration signal corresponding to a target frequency from vibration signals of multiple frequencies, specifically including: determining a gain coefficient of a peak filter; determining a scheduling period of the rotating speed signals, wherein the scheduling period is used for representing a time interval between two adjacent rotating speed signals; and determining a target vibration signal corresponding to the target frequency from the vibration signals of the multiple frequencies based on the gain coefficient, the scheduling period and the target frequency.
In one possible design, the apparatus further includes: and a testing module.
The testing module is used for applying a preset pulse acting force to the wheel end through the rotating hub, and the wheel end is linked with the target gear; acquiring a test rotating speed signal of a target gear in a non-bearing state, wherein the test rotating speed signal comprises test vibration signals with multiple frequencies; a resonance frequency corresponding to the resonance signal is determined from the test vibration signal at the plurality of frequencies.
The gear noise prevention device provided by the embodiment of the application can be used for implementing the technical scheme of the gear noise prevention method in the embodiment, the implementation principle and the technical effect are similar, and the details are not repeated herein.
It should be noted that the division of the modules of the above apparatus is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can all be implemented in the form of software invoked by a processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the obtaining module 501 may be a processing element separately set up, or may be implemented by being integrated into a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and the processing element of the apparatus calls and executes the functions of the obtaining module 501. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element here may be an integrated circuit with signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 6, the electronic device may include: a transceiver 601, a processor 602, a memory 603.
The processor 602 executes the computer executable instructions stored by the memory, causing the processor 602 to perform the aspects of the embodiments described above. The processor 602 may be a general-purpose processor including a central processing unit CPU, a Network Processor (NP), and the like; but also a digital signal processor DSP, an application specific integrated circuit ASIC, a field programmable gate array FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components.
A memory 603 is coupled to the processor 602 via the system bus and communicates with the processor, the memory 603 storing computer program instructions.
The transceiver 601 may be used to obtain the task to be run and the configuration information of the task to be run.
The system bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The system bus may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown, but this is not intended to represent only one bus or type of bus. The transceiver is used to enable communication between the database access device and other computers (e.g., clients, read-write libraries, and read-only libraries). The memory may include Random Access Memory (RAM) and may also include non-volatile memory (non-volatile memory).
The electronic device provided by the embodiment of the present application may be the computer device of the foregoing embodiment.
The embodiment of the application also provides a chip for operating the instructions, and the chip is used for executing the technical scheme of the gear noise prevention method in the embodiment.
The embodiment of the present application further provides a computer-readable storage medium, where a computer instruction is stored in the computer-readable storage medium, and when the computer instruction runs on a computer, the computer is enabled to execute the technical solution of the method for preventing gear noise according to the above embodiment.
The embodiment of the present application further provides a computer program product, where the computer program product includes a computer program, which is stored in a computer-readable storage medium, and the computer program can be read by at least one processor from the computer-readable storage medium, and when the computer program is executed by the at least one processor, the technical solution of the method for preventing gear noise in the foregoing embodiment can be implemented.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A method of preventing gear noise, comprising:
acquiring a rotating speed signal of a target gear in a non-bearing state, wherein the rotating speed signal comprises vibration signals of multiple frequencies, and the target gear is an input shaft gear of a speed distribution box of a vehicle;
determining a target vibration signal corresponding to a target frequency from the vibration signals of the plurality of frequencies, wherein the target frequency is a resonance frequency of the target gear and the vehicle;
determining a vibration energy value corresponding to the target vibration signal;
and if the vibration energy value is greater than the preset energy value, converting the target gear into a bearing state.
2. The method of claim 1, wherein the determining the vibration energy value corresponding to the target vibration signal comprises:
determining a vibration amplitude corresponding to the target vibration signal;
acquiring the rotational inertia of the target gear and the rotational angular speed of the target gear;
and determining a vibration energy value corresponding to the target vibration signal based on the vibration amplitude, the moment of inertia and the rotation angular velocity.
3. The method of claim 2, wherein the determining the vibration amplitude corresponding to the target vibration signal comprises:
acquiring the number of a plurality of sampling points for acquiring the rotating speed signal within a preset time length;
determining a discrete Fourier coefficient corresponding to each sampling point;
and determining the vibration amplitude corresponding to the target vibration signal based on the discrete Fourier coefficient corresponding to each sampling point and the target vibration signal.
4. The method of claim 2, wherein determining the vibration energy value corresponding to the target vibration signal based on the vibration amplitude, the moment of inertia, and the rotational angular velocity comprises:
determining a product of the vibration amplitude and the rotational angular velocity;
determining a squared difference between said product and said rotational angular velocity;
and determining the vibration energy corresponding to the target vibration signal based on the product of the square difference and the moment of inertia.
5. The method of claim 1, wherein determining a target vibration signal corresponding to a target frequency from the plurality of frequencies of vibration signals comprises:
and determining a target vibration signal corresponding to the target frequency from the vibration signals of the plurality of frequencies through a peak value filter.
6. The method of claim 5, wherein determining a target vibration signal corresponding to a target frequency from the vibration signals of the plurality of frequencies through a peak filter comprises:
determining a gain factor of the peak filter;
determining a scheduling period of the rotation speed signals, wherein the scheduling period is used for representing a time interval between two adjacent rotation speed signals;
and determining a target vibration signal corresponding to the target frequency from the vibration signals of the multiple frequencies based on the gain coefficient, the scheduling period and the target frequency.
7. The method according to any one of claims 1-6, further comprising:
applying a preset pulse acting force to a wheel end through a rotating hub, wherein the wheel end is linked with the target gear;
acquiring a test rotating speed signal of the target gear in a non-bearing state, wherein the test rotating speed signal comprises test vibration signals with multiple frequencies;
and determining a resonance frequency corresponding to the resonance signal from the test vibration signals of the plurality of frequencies.
8. A gear noise prevention device, comprising:
the system comprises an acquisition module, a transmission module and a control module, wherein the acquisition module is used for acquiring a rotating speed signal of a target gear in a non-bearing state, the rotating speed signal comprises vibration signals of multiple frequencies, and the target gear is an input shaft gear of a speed distribution box of a vehicle;
the first determination module is used for determining a target vibration signal corresponding to a target frequency from the vibration signals of the plurality of frequencies, wherein the target frequency is a resonance frequency of the target gear and the vehicle;
the second determining module is used for determining a vibration energy value corresponding to the target vibration signal;
and the conversion module is used for converting the target gear into a bearing state if the vibration energy value is greater than a preset energy value.
9. An electronic device, comprising: a processor, and a memory communicatively coupled to the processor;
the memory stores computer-executable instructions;
the processor executes computer-executable instructions stored by the memory to implement the method of any of claims 1-7.
10. A computer-readable storage medium having computer-executable instructions stored therein, which when executed by a processor, are configured to implement the method of any one of claims 1-7.
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