The invention discloses an active steering control method and system for a four-wheel steering passenger car, and the method comprises the steps: obtaining a reference vehicle state reference quantity REF of the four-wheel steering passenger car in a current state, and calculating a transverse load transfer rate LTR of the four-wheel steering passenger car in the current state; taking the transverse load transfer rate LTR as a constraint condition, and performing optimization solution on a quadratic programming problem about vehicle lateral displacement deviation of the four-wheel steering passenger car on the basis of a reference vehicle state reference quantity REF to obtain a control quantity u for controlling a steering angle of a rear wheel ready of the four-wheel steering passenger car, the transverse load transfer rate peak value of the passenger car and the lateral displacement deviation of the car can be effectively reduced, and the running stability of the car in the crosswind environment is effectively improved.

    本发明公开了一种四轮转向客车的主动转向控制方法及系统,本发明方法包括获取四轮转向客车在当前状态下的参考车辆状态参考量REF,并计算四轮转向客车在当前状态下的横向载荷转移率LTR;将横向载荷转移率LTR作为约束条件,基于参考车辆状态参考量REF对四轮转向客车的关于车辆侧向位移偏差的二次规划问题进行优化求解得到控制量u以用于控制四轮转向客车的后轮rear的转向角度,本发明能够有效降低客车的横向载荷转移率峰值和车辆侧向位移偏差,有效提高车辆侧风环境行驶的稳定性。


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    Title :

    Active steering control method and system for four-wheel steering passenger car


    Additional title:

    一种四轮转向客车的主动转向控制方法及系统


    Contributors:
    YANG QINWEN (author) / XIAO GANG (author) / TU QIMING (author)

    Publication date :

    2023-08-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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