Driving wheel anti-skid and torque optimization fused electric vehicle stability control method

A technology of stability control and driving wheels, applied in electric vehicles, control drives, control devices, etc., can solve the problem of not considering the slippage of driving wheels, and achieve the effect of improving stability and maneuverability

Pending Publication Date: 2022-01-28
CHANGCHUN UNIV OF TECH
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Problems solved by technology

[0005] In order to solve the problem that the drive wheel slipping is not considered in the existing electric vehicle torque optimization control, the present invention provides a stability control method for electric vehicles that integrates drive wheel anti-slip and torque optimization

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  • Driving wheel anti-skid and torque optimization fused electric vehicle stability control method
  • Driving wheel anti-skid and torque optimization fused electric vehicle stability control method
  • Driving wheel anti-skid and torque optimization fused electric vehicle stability control method

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Embodiment Construction

[0107] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0108] A driving wheel anti-skid and torque optimization fusion electric vehicle stability control method is characterized in that the method includes a reference model module, a fuzzy controller, a drive anti-skid controller, a torque optimization controller, and a CarSim vehicle model; the reference model The module calculates the reference yaw rate and the side slip angle of the center of mass according to the driver's input and the longitudinal speed of the vehicle; the CarSim vehicle model outputs the actual state quantity of the car; the fuzzy controller calculates the reference yaw rate, the reference side slip angle of the center of mass and the actual state of the car Calculate the additional yaw moment of the vehicle; the torque optimization controller outputs the required torque of the two rear wheel hub motors according to the vehicle deman...

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Abstract

The invention relates to a driving wheel anti-skid and torque optimization fused electric vehicle stability control method, which is characterized in that the method comprises a reference model module, a fuzzy controller, a driving anti-slip controller, a torque optimization controller and a CarSim vehicle model, wherein the reference model module calculates a reference yaw velocity and a side slip angle according to driver input and a vehicle longitudinal speed; the CarSim vehicle model outputs the actual state quantity of the vehicle; the fuzzy controller calculates the additional yaw moment of the vehicle according to the reference yaw velocity, the reference side slip angle and the actual state quantity of the vehicle; and the torque optimization controller outputs the required torque of two rear wheel hub motors according to the required torque of the whole vehicle, the additional yawing torque, the tire lateral force, the vertical force and the rotating speed of the two rear wheels, the anti-slip controller is driven to control the slip rate of the left driving wheel and the right driving wheel so as to enable the slip rate to be kept near the optimal slip rate, and the two controllers complement each other, so that the stability control of the vehicle under the extreme road condition is realized.

Description

Technical field: [0001] The invention relates to the field of electric vehicle stability control, and more specifically relates to a method for controlling the stability of an electric vehicle in which driving wheel anti-slip and torque optimization are integrated. Background technique: [0002] With the popularity of electric vehicles becoming more and more widespread, the driving stability of electric vehicles is receiving more and more attention. Among them, various integrated control stability control methods have been widely studied, which is also the development direction of vehicle stability control in the future. [0003] The drive wheel anti-slip control system can prevent the drive wheel from excessive slip when the vehicle is driving under various road conditions. The torque optimization control strategy takes into account the constraints of various constraints to ensure good power and handling stability during the driving process of the vehicle sex. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20B60L15/38
CPCB60L15/20B60L15/38B60L2240/423B60L2260/44B60L2260/48Y02T10/72
Inventor 崔高健秦毓飞商小强李德涛李绍松郑馨義赵文煜
Owner CHANGCHUN UNIV OF TECH
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