A motor torque control method and a wheel-side motor distributed drive system

A technology of motor torque and wheel-side motor, which is applied in the direction of control drive, control device, electric vehicle, etc., can solve problems affecting driving safety, body yaw, problems, etc., to improve driving safety, avoid excessive slip, Reduce the effect of tire wear
CN109353227BActive Publication Date: 2020-06-02WEICHAI POWER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WEICHAI POWER CO LTD
Publication Date
2020-06-02

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Abstract

The invention provides a motor torque control method and a wheel rim motor distributed drive system. The method is applied to a vehicle control unit in the system. The system further comprises two motor systems. The motor systems comprise motors. By means of the method, the following motor torque control process is executed to the motor systems at the same time. Based on current accelerator pedalsignals and the current rotating speeds of the motors in the motor systems, torque basic values of the motors in the motor systems are calculated; the torque basic values of the motors are corrected,and torque corrected values of the motors are obtained; the torque corrected values of the motors are limited through the current vehicle speed of a vehicle and the motor torque recently sent to the other motor system by the vehicle control unit historically, and torque limited values of the motors are obtained; the motor torque is determined from the torque limited values and the torque correctedvalues of the motors and input in the motor systems to which the motors belong, and therefore the motor systems are controlled to respond to the motor torque to control the motors in the motor systems to drive driving wheels, used for being driven by the motor systems, on the vehicle.
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Description

technical field

[0001] The invention relates to the technical field of motor drive, and more specifically, to a motor torque control method and a wheel-side motor distributed drive system. Background technique

[0002] The driving wheel of the car is the wheel connected to the drive axle, and the ground friction it receives is forward to provide driving force for the driving of the vehicle. Vehicles usually have two driving modes, one is front-wheel drive and the other is rear-wheel drive. Front-wheel drive means that the two wheels at the front of the vehicle are driving wheels, and the two wheels at the rear are non-driving wheels. The two wheels at the front are non-drive wheels, and the two wheels at the rear are drive wheels.

[0003] The wheel side motor distributed drive system adopts the independent drive mode of the left drive wheel and the right drive wheel. Although this mode can provide motor torque to each drive wheel side motor separately, drive the correspond...

Claims

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