The invention discloses a drive-by-wire redundant steering system with a failure protection function and a control method of the system, and the steering system comprises a steering wheel, a steering wheel shaft, a steering tie rod, a left front wheel, a right front wheel, a steering angle torque sensor, an electric control unit, a steering wheel force sense feedback mechanism which comprises a force sense feedback motor and a force sense feedback transmission device; a main steering mechanism which comprises a main steering motor and a main steering transmission device; and a backup steering mechanism which comprises a planetary gear set and a planetary gear set output shaft. The steering wheel shaft is connected with the input end of the planetary gear set, and the planetary gear set output shaft and the steering tie rod are in transmission through a backup steering transmission assembly; and the backup steering mechanism further comprises an elastic device and a backup steering driving motor, wherein the elastic device is used for locking and loosening a gear ring of the planetary gear set. Vehicle steering under the condition that the main steering mechanism breaks down and loses efficacy is achieved through the backup steering mechanism, the structure is simpler, functions are richer, and control is more sensitive.

    本发明公开了一种具有失效防护功能的线控冗余转向系统及其控制方法,该转向系统包括方向盘、方向盘轴、转向横拉杆、左右前轮、转角扭矩传感器、电控单元,以及:方向盘力感反馈机构,其包括力感反馈电机及力感反馈传动装置;主转向机构,其包括主转向电机及主转向传动装置;备份转向机构,其包括行星齿轮组和行星齿轮组输出轴,方向盘轴与行星齿轮组的输入端连接,行星齿轮组输出轴与转向横拉杆之间通过备份转向传动组件进行传动;所述备份转向机构还包括用于将所述行星齿轮组的齿圈锁紧和松开的松紧装置,以及备份转向驱动电机。本发明通过备份转向机构实现主转向机构故障失效情况下的车辆转向,结构更简单,功能更丰富、控制更灵敏。


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    Title :

    Drive-by-wire redundancy steering system with failure protection function and control method of system


    Additional title:

    一种具有失效防护功能的线控冗余转向系统及其控制方法


    Contributors:
    DENG WEIWEN (author) / ZHAO RUI (author) / DING NENGGEN (author) / CAI JINKANG (author) / WANG YA (author) / DOU TENGFEI (author)

    Publication date :

    2021-06-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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