The invention provides a steering control method and a vehicle steering system, and relates to the field of vehicle steering. The steering control method comprises the steps that the forward speed ui of a vehicle is obtained; determining the current driving condition of the vehicle according to the forward speed ui, wherein the driving condition comprises a low-speed condition, a medium-speed condition and a high-speed condition; if the vehicle is in the low-speed working condition, setting the transmission ratio ia of a vehicle steering system to be equal to a first target value; if the vehicle is in the medium-speed working condition, the transmission ratio ia of the vehicle steering system is determined through a formula (1); if the vehicle is in the high-speed working condition, the transmission ratio ia of the vehicle steering system is determined through a formula (1). According to the method, the requirements that the vehicle steers flexibly at a low speed and steers stably at a medium speed and a high speed are met, the yaw velocity gain and the lateral acceleration gain are reduced at the high speed, the steering stability is considered, and meanwhile it is guaranteed that the vehicle has the good urgent danger avoiding capacity at the high speed.

    本公开提供了一种转向控制方法及车辆转向系统,涉及车辆转向领域。转向控制方法包括:获取车辆的前进速度ui;根据前进速度ui确定车辆当前所处的行驶工况,行驶工况包括低速工况、中速工况和高速工况;若车辆处于低速工况,设定车辆转向系统的传动比ia等于第一目标值;若车辆处于中速工况,车辆转向系统的传动比ia通过公式(1)确定;若车辆处于高速工况,车辆转向系统的传动比ia通过公式(1)确定。本公开实现了车辆在低速下转向灵活,中速和高速下转向稳定的需求,在高速下降低横摆角速度增益与侧向加速度增益,兼顾转向稳定性的同时,保证车辆在高速下具有较好的紧急避险能力。


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    Titel :

    Steering control method and vehicle steering system


    Weitere Titelangaben:

    转向控制方法及车辆转向系统


    Beteiligte:
    CUI TAOWEN (Autor:in) / CHEN XIANG (Autor:in) / ZHAO JIN (Autor:in) / QU YUAN (Autor:in)

    Erscheinungsdatum :

    2023-01-24


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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