CN-121984393-A - Method, device and system for optimizing order noise of driving motor and electronic equipment

CN121984393ACN 121984393 ACN121984393 ACN 121984393ACN-121984393-A

Abstract

The invention relates to a method, a device, a system and electronic equipment for optimizing order noise of a driving motor, belonging to the technical field of noise optimization of the driving motor, wherein the method comprises the following steps: obtaining a plurality of working points according to a rotating speed interval and a torque interval of the driving motor, obtaining an optimal phase of each working point according to a maximum amplitude of the driving motor, obtaining an optimal amplitude of each working point according to the optimal phase of each working point, and carrying out harmonic injection according to the optimal phase and the optimal amplitude corresponding to each working point so as to reduce the order noise of the driving motor; according to the method, a plurality of working condition points are obtained according to specific parameters of the driving motor, the optimal phase and the optimal amplitude of each working condition point are obtained, and when the driving motor is in different working conditions, the optimal phase and the optimal amplitude under the corresponding working conditions are used as parameters of harmonic injection, so that the optimization efficiency and the effect of the order noise of the driving motor are effectively improved.

Inventors

JIANG BINWEN
LI RUI
WEI XIAOLAN
Lin Shangjin
LUO HONGJIN
HE FANG
QIN ZHEN
LIU DAIYU

Assignees

上汽通用五菱汽车股份有限公司

Dates

Publication Date: 20260505
Application Date: 20251224

Claims (10)

1. A method for optimizing order noise of a drive motor, the method comprising: obtaining a plurality of working points according to a rotating speed interval and a torque interval of a driving motor, wherein the rotating speed interval and the torque interval are factory parameters of the driving motor; obtaining an optimal phase of each working point according to the maximum amplitude of the driving motor; Obtaining an optimal amplitude value of each working point according to the optimal phase of each working point; And carrying out harmonic injection according to the optimal phase and the optimal amplitude corresponding to each working point so as to reduce the order noise of the driving motor.
2. The optimization method according to claim 1, wherein the optimal phase of each of the operating points is obtained according to the maximum amplitude of the driving motor, the method comprising: selecting one working condition point each time to acquire an optimal phase operation until all the working condition points acquire corresponding optimal phases; And the operation of acquiring the optimal phase is that under the condition of a first working point, the maximum amplitude of the driving motor is selected as the input amplitude of the driving motor, the driving motor is swept from small to large according to the phase, the corresponding vibration acceleration root mean square and motor noise weighted value under different phases are recorded, and after the sweeping is finished, the phase corresponding to the minimum vibration acceleration root mean square and the minimum motor noise weighted value is used as the optimal phase of the first working point.
3. The optimization method according to claim 2, wherein the optimal amplitude of each of the operating points is obtained according to the optimal phase of each of the operating points, the method comprising: selecting one working condition point each time to acquire an optimal amplitude value until all the working condition points acquire a corresponding optimal amplitude value; the operation of obtaining the optimal amplitude is to obtain the optimal phase corresponding to the first working point as the input phase of the driving motor, sweep the amplitude from small to large, record the corresponding vibration acceleration root mean square and motor noise weighted value under different amplitudes, and take the amplitude corresponding to the minimum vibration acceleration root mean square and the minimum motor noise weighted value as the optimal amplitude after sweep.
4. The optimization method according to claim 1, wherein the harmonic injection is performed according to the optimal phase and the optimal amplitude corresponding to each of the operating points, the method comprising: taking the real-time working point of the driving motor as a target working point; and taking the optimal phase and the optimal amplitude corresponding to the target working condition point as injection parameters to be injected into the driving motor.
5. The optimization method of claim 4, wherein prior to said harmonic injection in accordance with said optimal phase and said optimal amplitude for each of said operating points, said method further comprises: and obtaining the optimal phase and the optimal amplitude corresponding to other working conditions except each working condition point between the first working condition point and the last working condition point by using a linear interpolation method according to the optimal phase and the optimal amplitude corresponding to each working condition point.
6. The optimization method according to claim 1, wherein after the harmonic injection according to the optimal phase and the optimal amplitude corresponding to each of the operating points, the method further comprises: recording motor order noise with and without harmonic injection at each working point; And if the motor order noise when the harmonic injection exists at each working point is smaller than the motor order noise when the harmonic injection exists at each working point, taking the optimal phase and the optimal amplitude corresponding to each working point as calibration values, so that the subsequent harmonic injection is carried out according to the calibration values.
7. The optimization method according to claim 1, wherein the plurality of operating points are obtained according to a rotation speed interval and a torque interval of the driving motor, the method comprising: selecting n rotating speed points in the rotating speed interval at a first preset interval; selecting m torque points in the torque interval at a second preset interval; And combining the n rotating speed points with the m torque points to obtain n multiplied by m working condition points.
8. A drive motor order noise optimization apparatus, the apparatus comprising: the working point module is used for obtaining a plurality of working points according to a rotating speed interval and a torque interval of the driving motor, wherein the rotating speed interval and the torque interval are factory parameters of the driving motor; the phase module is used for obtaining the optimal phase of each working condition point according to the maximum amplitude of the driving motor; The amplitude module is used for obtaining the optimal amplitude of each working point according to the optimal phase of each working point; and the harmonic injection module is used for carrying out harmonic injection according to the optimal phase and the optimal amplitude corresponding to each working point so as to reduce motor order noise.
9. A drive motor order noise optimization system, wherein the optimization system applies the optimization method according to any one of claims 1 to 7, the optimization system comprising: the driving motor is hexahedral, wherein the surface of one output shaft and the surface of five shells; the three-way vibration sensor is arranged at the geometric center point of each shell surface; the near-field microphone is arranged at a first preset height position right above a geometric center point of a shell surface at the top of the driving motor; And the singlechip is electrically connected with the driving motor, the three-way vibration sensor and the near-field microphone.
10. An electronic device, comprising: at least one processor, and A memory communicatively coupled to the at least one processor, wherein, The memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-7.

Description

Method, device and system for optimizing order noise of driving motor and electronic equipment Technical Field The invention belongs to the technical field of noise optimization of driving motors, and particularly relates to a driving motor order noise optimization method, device and system and electronic equipment. Background New energy automobiles rapidly develop, the wide application of a driving motor is promoted, and in the running process of the driving motor, the NVH (Noise, vibration, harshness, noise, vibration and sound vibration roughness) performance of the whole automobile can be seriously affected by subharmonic noise generated by motor control and body structural design. At present, harmonic injection is performed by continuously trying combinations of various amplitudes (current amplitude or voltage amplitude) and phases (current phase) based on experience in the range of injectable amplitudes and phases of a driving motor, then the order noise performance of the driving motor injected by each combination is tested, and finally a group of amplitudes and phases with the smallest sound pressure value of the order noise is selected, but the group of amplitudes and phases are the optimal harmonic injection combination under the current working condition, so that the order noise of the driving motor under the current working condition is minimal, and the working conditions of the driving motor under the general condition are numerous, each working condition needs to be tried repeatedly based on experience, the time consumption of the order noise optimization is caused, and the order noise optimization efficiency is low. Disclosure of Invention Therefore, the invention provides a method, a device, a system and electronic equipment for optimizing the order noise of a driving motor, which are used for solving the problems of long time consumption and low efficiency of optimizing the order noise caused by repeated attempts based on experience in each working condition of the existing driving motor. In order to achieve the above purpose, the invention adopts the following technical scheme: In a first aspect, the present invention provides a driving motor order noise optimization method, including: obtaining a plurality of working points according to a rotating speed interval and a torque interval of a driving motor, wherein the rotating speed interval and the torque interval are factory parameters of the driving motor; obtaining an optimal phase of each working point according to the maximum amplitude of the driving motor; Obtaining an optimal amplitude value of each working point according to the optimal phase of each working point; And carrying out harmonic injection according to the optimal phase and the optimal amplitude corresponding to each working point so as to reduce the order noise of the driving motor. Further, the method obtains an optimal phase of each working condition point according to the maximum amplitude of the driving motor, and the method comprises the following steps: selecting one working condition point each time to acquire an optimal phase operation until all the working condition points acquire corresponding optimal phases; And the operation of acquiring the optimal phase is that under the condition of a first working point, the maximum amplitude of the driving motor is selected as the input amplitude of the driving motor, the driving motor is swept from small to large according to the phase, the corresponding vibration acceleration root mean square and motor noise weighted value under different phases are recorded, and after the sweeping is finished, the phase corresponding to the minimum vibration acceleration root mean square and the minimum motor noise weighted value is used as the optimal phase of the first working point. Further, the method obtains an optimal amplitude value of each working point according to the optimal phase of each working point, and the method comprises the following steps: selecting one working condition point each time to acquire an optimal amplitude value until all the working condition points acquire a corresponding optimal amplitude value; the operation of obtaining the optimal amplitude is to obtain the optimal phase corresponding to the first working point as the input phase of the driving motor, sweep the amplitude from small to large, record the corresponding vibration acceleration root mean square and motor noise weighted value under different amplitudes, and take the amplitude corresponding to the minimum vibration acceleration root mean square and the minimum motor noise weighted value as the optimal amplitude after sweep. Further, the method includes performing harmonic injection according to the optimal phase and the optimal amplitude corresponding to each working point, where the method includes: taking the real-time working point of the driving motor as a target working point; and taking the optimal phase and the optimal amplitude co