Method and apparatus for controlling electric motor noise, and computer device and storage medium

Patent metadata

Field	Value
Publication number	US-12403774-B2
Application number	US-202018043721-A
Country	US
Kind code	B2
Filing date	Sep 16, 2020
Priority date	Sep 16, 2020
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

The present disclosure relates to the field of noise reduction technologies, and specifically a motor noise control method and apparatus, a computer device and a storage medium are provided. The method includes: determining a current driving mode of a vehicle and a total torque required by the vehicle in the current driving mode; acquiring an electric drive noise distribution matrix of the vehicle in the current driving mode, where the electric drive noise distribution matrix includes correspondences among target motor noises, target motor speeds, and target motor torques of respective motors in the current driving mode; and distributing a torque of each motor according to the electric drive noise distribution matrix, where a sum of torques of respective motors is equal to the total torque required by the vehicle.

First claim

The invention claimed is:

1. A motor noise control method, comprising:
determining a current driving mode of a vehicle and a total torque required by the vehicle in the current driving mode;
acquiring an electric drive noise distribution matrix of the vehicle in the current driving mode, wherein the electric drive noise distribution matrix comprises correspondences among target motor noises, target motor speeds, and target motor torques of respective motors in the current driving mode; and
distributing a torque of each motor according to the electric drive noise distribution matrix, wherein a sum of torques of respective motors is equal to the total torque required by the vehicle,
wherein an electric drive noise distribution matrix of the vehicle in a preset driving mode is established by:
acquiring test noises corresponding to each motor in the preset driving mode;
acquiring target motors of which test noises are greater than a preset noise;
determining the test noises of the target motors as target motor noises of the target motors; and
after acquiring target motor speeds and target motor torques corresponding to the target motor noises according to the target motor noises, establishing the electric drive noise distribution matrix,
wherein the preset driving mode comprises: a constant speed driving mode, an acceleration driving mode or a deceleration driving mode.

2. The motor noise control method according to claim 1 , wherein after determining the test noises of the target motors as the target motor noises of the target motors, the method further comprises:
sorting the target motor noises in an ascending order; or
sorting the target motor noises in a descending order.

3. The motor noise control method according to claim 1 , wherein distributing the torque of each motor according to the electric drive noise distribution matrix comprises:
when a speed of one target motor reaches its corresponding target motor speed, distributing the torque of each motor according to a preset distribution rule; or
when a torque of one target motor reaches its corresponding target motor torque, distributing the torque of each motor according to the preset distribution rule.

4. The motor noise control method according to claim 3 , wherein the preset distribution rule comprises a preset torque ratio, wherein the torque ratio is a ratio of the torque of each motor to the total torque required by the vehicle.

5. A non-transitory computer device, comprising: a processor and a memory, wherein at least one instruction, at least one segment of program, a code set or an instruction set is stored in the memory, and the at least one instruction, the at least one segment of program, the code set or the instruction set is loaded and executed by the processor to:
determine a current driving mode of a vehicle and a total torque required by the vehicle in the current driving mode;
acquire an electric drive noise distribution matrix of the vehicle in the current driving mode, wherein the electric drive noise distribution matrix comprises correspondences among target motor noises, target motor speeds, and target motor torques of respective motors in the current driving mode; and
distribute a torque of each motor according to the electric drive noise distribution matrix, wherein a sum of torques of respective motors is equal to the total torque required by the vehicle,
wherein an electric drive noise distribution matrix of the vehicle in a preset driving mode is established by:
acquiring test noises corresponding to each motor in the preset driving mode;
acquiring target motors of which test noises are greater than a preset noise;
determining the test noises of the target motors as target motor noises of the target motors; and
after acquiring target motor speeds and target motor torques corresponding to the target motor noises according to the target motor noises, establishing the electric drive noise distribution matrix,
wherein the preset driving mode comprises: a constant speed driving mode, an acceleration driving mode or a deceleration driving mode.

6. The non-transitory computer device according to claim 5 , wherein after determining the test noises of the target motors as the target motor noises of the target motors, the at least one instruction, the at least one segment of program, the code set or the instruction set is executed by the processor to:
sort the target motor noises in an ascending order; or
sort the target motor noises in a descending order.

7. The non-transitory computer device according to claim 5 , wherein when distributing the torque of each motor according to the electric drive noise distribution matrix, the at least one instruction, the at least one segment of program, the code set or the instruction set is executed by the processor to:
when a speed of one target motor reaches its corresponding target motor speed, distribute the torque of each motor according to a preset distribution rule; or
when a torque of one target motor reaches its corresponding target motor torque, distribute the torque of each motor according to the preset distribution rule.

8. The non-transitory computer device according to claim 7 , wherein the preset distribution rule comprises a preset torque ratio, wherein the torque ratio is a ratio of the torque of each motor to the total torque required by the vehicle.

9. A non-transitory computer storage medium, coupled to a processor and having at least one instruction, at least one segment of program, a code set or an instruction set stored thereon, wherein the at least one instruction, the at least one segment of program, the code set or the instruction set is loaded and executed by the processor to:
determine a current driving mode of a vehicle and a total torque required by the vehicle in the current driving mode;
acquire an electric drive noise distribution matrix of the vehicle in the current driving mode, wherein the electric drive noise distribution matrix comprises correspondences among target motor noises, target motor speeds, and target motor torques of respective motors in the current driving mode; and
distribute a torque of each motor according to the electric drive noise distribution matrix, wherein a sum of torques of respective motors is equal to the total torque required by the vehicle,
wherein an electric drive noise distribution matrix of the vehicle in a preset driving mode is established by:
acquiring test noises corresponding to each motor in the preset driving mode;
acquiring target motors of which test noises are greater than a preset noise;
determining the test noises of the target motors as target motor noises of the target motors; and
after acquiring target motor speeds and target motor torques corresponding to the target motor noises according to the target motor noises, establishing the electric drive noise distribution matrix,
wherein the preset driving mode comprises: a constant speed driving mode, an acceleration driving mode or a deceleration driving mode.

10. The storage medium according to claim 9 , wherein after determining the test noises of the target motors as the target motor noises of the target motors, the at least one instruction, the at least one segment of program, the code set or the instruction set is executed by the processor to:
sort the target motor noises in an ascending order; or
sort the target motor noises in a descending order.

11. The storage medium according to claim 9 , wherein when distributing the torque of each motor according to the electric drive noise distribution matrix, the at least one instruction, the at least one segment of program, the code set or the instruction set is ex

Assignees

• Geely Holding Group Co Ltd
• Ningbo Geely Automobile Res And Development Co Ltd

Inventors

• He Mu
• Tang Xiaolin
• Zhao Tonghang
• Xiong Yinbin
• Liu Hongqing
• Peng Long

Classifications

• B60L2270/145

  Structure borne vibrations · CPC title

• B60L2270/142

  acoustic · CPC title

• B60L2260/20

  Drive modes; Transition between modes · CPC title

• B60L2240/423

  Torque · CPC title

• Y02T10/72

  Electric energy management in electromobility · CPC title