The invention belongs to the technical field of vehicle steering systems, and particularly relates to a neutral position self-learning calibration method and system for an electric power steering system. When the curvature absolute value of a lane line in front of a road is smaller than a curvature set value, and the included angle between the lane line in front of the road and the front of a vehicle is smaller than an included angle set value; when the vehicle is in a straight driving state and the transverse deviation between the center of the vehicle and the center of the lane is smaller than the transverse deviation set value, the current vehicle driving state is judged to be straight driving, the neutral position of the electric power steering system is calibrated according to the steering wheel rotating angle during straight driving of the vehicle, and the neutral position precision of the electric power steering system is improved.

    本发明属于车辆转向系统技术领域,具体涉及一种电动助力转向系统中位自学习标定方法及系统,当道路前方车道线曲率绝对值小于曲率设定值、道路前方车道线与车辆正前方的夹角小于夹角设定值,且车辆中心与所处车道中心的横向偏差小于横向偏差设定值时,判定当前车辆行驶状态为直线行驶,并根据车辆直线行驶时的方向盘转角对电动助力转向系统中位进行标定,提升了电动助力转向系统的中位精度。


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    Title :

    Neutral position self-learning calibration method and system for electric power steering system


    Additional title:

    一种电动助力转向系统中位自学习标定方法及系统


    Contributors:
    YANG JIANCHONG (author) / LI WEIQI (author) / YANG ZHILIN (author) / ZHU CHUNQING (author) / GUO YAOHUA (author) / GUO WEIWEI (author) / WU SHUAIJING (author)

    Publication date :

    2024-05-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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