The invention provides a control method of a vehicle power-assisted steering system, the vehicle power-assisted steering system and a vehicle. The control method comprises the steps that vehicle speed information of the vehicle and rack position information of a steering gear rack are obtained, obtaining a target rack moving speed value of the steering gear rack and a proportionality coefficient K1 of the rack moving speed according to the vehicle speed information and the rack position information; an actual rack moving speed value of the steering gear rack is collected, and a rack moving speed error value is obtained through the target rack moving speed value and the actual rack moving speed value; and obtaining an active aligning torque value according to the rack moving speed error value and the proportionality coefficient K1. Therefore, compared with the prior art, the control method of the vehicle power-assisted steering system can enable the vehicle power-assisted steering system to provide appropriate aligning torque for the steering wheel at different vehicle speeds, so that the steering operation hand feeling of the steering wheel is smoother, and then the stability and accuracy of the active aligning function of the vehicle can be improved; and the driving safety of the vehicle can also be improved.

    本发明提供了一种车辆助力转向系统的控制方法、车辆助力转向系统及车辆,控制方法包括:获取车辆的车速信息和转向器齿条的齿条位置信息,根据车速信息和齿条位置信息得到转向器齿条的目标齿条移动速度值以及齿条移动速度的比例系数K1;采集转向器齿条的实际齿条移动速度值,通过目标齿条移动速度值和实际齿条移动速度值得到齿条移动速度误差值;根据齿条移动速度误差值和比例系数K1得到主动回正力矩值。由此,与现有技术相比,车辆助力转向系统的控制方法能够使车辆助力转向系统在不同车速下为方向盘提供适宜的回正力矩,从而可以使方向盘的转向操作手感更加平顺,进而可以提高车辆主动回正功能的稳定性及准确性,也可以提升车辆的驾驶安全性。


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    Title :

    Control method of vehicle power-assisted steering system, vehicle power-assisted steering system and vehicle


    Additional title:

    车辆助力转向系统的控制方法、车辆助力转向系统及车辆


    Contributors:
    ZHU ZHENMIN (author) / WANG DONGDONG (author) / SUN YU (author) / SUN BINZE (author) / ZHANG YINGFU (author) / XU BO (author) / LI JUNLIANG (author) / AN SHUAIHUA (author) / ZHEN SHUHUAN (author)

    Publication date :

    2022-04-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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