The invention discloses a vehicle, a power-assisted steering control method and device of the vehicle and an electric power steering system. The method comprises the steps that the vehicle speed and the load of the vehicle are obtained; load intervals corresponding to loads are determined, correction coefficients are determined based on the load intervals, different load intervals correspond to different correction coefficients, and the correction coefficients corresponding to the different load intervals are obtained through calibration under the same hand power value; based on the correction coefficient and a no-load power-assisted mapping relation, a target power-assisted mapping relation is determined, and the no-load power-assisted mapping relation is used for representing the corresponding relation between the vehicle speed and the power-assisted value in the no-load state; a target assistance value is determined according to the vehicle speed and the target assistance mapping relation; and providing steering assisting power to the vehicle based on the target assisting power value so as to have the same hand power value under different loads. According to the method, the vehicle can have the same hand power value under different loads, and therefore the driving experience of a driver can be improved.

    本发明公开了一种车辆及其转向助力控制方法、装置和电动助力转向系统,所述方法包括:获取车辆的车速和载重;确定载重对应的载重区间,并基于载重区间确定修正系数,其中,不同的载重区间对应不同的修正系数,且不同载重区间对应的修正系数是在相同手力值下标定得到;基于修正系数和空载助力映射关系确定目标助力映射关系,其中,空载助力映射关系用于表征空载状态下车速与助力值之间的对应关系;根据车速和目标助力映射关系确定目标助力值;基于目标助力值向车辆提供转向助力,以在不同载重下具有相同的手力值。本发明的方法能够使车辆在不同载重下具有相同的手力值,从而能够提升驾驶员的驾驶体验。


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    Title :

    Vehicle, power-assisted steering control method and device thereof and electric power steering system


    Additional title:

    车辆及其转向助力控制方法、装置和电动助力转向系统


    Contributors:
    PEI FUXING (author)

    Publication date :

    2024-07-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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