The invention provides a middle position calibration and tail end position self-learning method based on a rear wheel steering system, and the method is applied to the field of vehicles, and comprises the steps: obtaining a current rack middle position value and a rack middle position calibration value, and if a first difference absolute value of the current rack middle position value and the rack middle position calibration value is greater than or equal to a first preset error threshold value, determining that the tail end position is the middle position; if yes, the rear wheel steering system is controlled to conduct whole vehicle tail end self-learning, after the self-learning frequency reaches the first target frequency, a tail end position self-learning temporary value and a rack neutral position calibration value of the rear wheel steering system are obtained, and if a second difference absolute value of the tail end position self-learning temporary value and the rack neutral position calibration value is smaller than a second preset error threshold value, the rear wheel steering system is controlled to conduct whole vehicle tail end self-learning; if yes, when the whole vehicle is powered off, the tail end position self-learning value in the preset memory is updated based on the tail end position self-learning temporary value. According to the method, the accuracy and the reliability of a calibration result can be ensured based on the combination of the middle-position tail end self-learning of the rack and the tail end self-learning of the whole vehicle through multiple cycles and average value calculation.

    本申请提供了基于后轮转向系统的中位标定和末端位置自学习方法,该方法应用于车辆领域,包括:获取当前齿条中位值和齿条中位标定值,若当前齿条中位值和齿条中位标定值的第一差值绝对值大于或等于第一预设误差阈值,则控制后轮转向系统进行整车末端自学习,并在自学习次数达到第一目标次数后,获取后轮转向系统的末端位置自学习临时值和齿条中位标定值,若末端位置自学习临时值与齿条中位标定值的第二差值绝对值小于第二预设误差阈值,则在整车下电时,基于末端位置自学习临时值更新预设存储器中的末端位置自学习值。该方法能够基于台架的中位末端自学习和整车末端自学习相结合,并通过多次循环和平均值计算,以确保标定结果的准确性和可靠性。


    Access

    Download


    Export, share and cite



    Title :

    Middle position calibration and tail end position self-learning method based on rear wheel steering system


    Additional title:

    基于后轮转向系统的中位标定和末端位置自学习方法


    Contributors:
    TANG LIWEI (author) / ZHAO ZEYU (author) / YUE JIALONG (author)

    Publication date :

    2025-03-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge




    Intelligent steering rear wheel steering position sensor

    YE GUOWEI | European Patent Office | 2021

    Free access

    Steering wheel neutral position angle calibration method

    WANG YU / LUO DAZHI / LIU XURONG et al. | European Patent Office | 2023

    Free access

    TAIL LAMPS (REAR POSITION LAMPS)

    SAE Technical Papers | 1977


    TAIL LAMPS (REAR POSITION LIGHT)

    SAE Technical Papers | 1970