The invention discloses a steering-by-wire fault tolerance system and method. A first electromagnetic valve is arranged on a hydraulic pipeline for connecting a hydraulic oil tank with a left brake. Afourth electromagnetic valve is arranged on a hydraulic pipeline for connecting the hydraulic oil tank with a right brake. The left half part and the right half part of a hydraulic cylinder are bothconnected with a brake, a second electromagnetic valve is arranged on a hydraulic pipeline for connecting the left half part with the brake, and a third electromagnetic valve is arranged on a hydraulic pipeline for connecting the right half part with the brake. The electromagnetic valves are all connected with an electronic control unit ECU, and the electronic control unit ECU achieves switching between a steering-by-wire mode and an integrated steering mode of a steering system according to whether a steering motor breaks down or not. The system and the method are simple in structure and easyto realize, and adopt dual fault detection to ensure the timeliness of finding out the fault of the steering motor.

    本发明公开了一种线控转向的容错系统及方法,液压油箱与左制动器连接的液压管路上设有第一电磁阀,液压油箱与右制动器连接的液压管路上设有第四电磁阀,液压缸左半部分和右半部分均与制动器连接,左半部分与制动器的连接液压管路上设有第二电磁阀,右半部分与制动器的连接液压管路上设有第三电磁阀;上述电磁阀均与电子控制单元ECU连接,电子控制单元ECU根据转向电机是否故障,实现转向系的线控转向模式和集成转向模式的切换。本发明结构简单、易于实现,采用双重故障检测以保证发现转向电机故障的及时性。


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    Title :

    Steering-by-wire fault tolerance system and method


    Additional title:

    一种线控转向的容错系统及方法


    Contributors:
    XU XING (author) / LIU ZHENYU (author) / WANG FENG (author) / JIANG XINWEI (author) / SU PENGWEI (author)

    Publication date :

    2020-05-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge





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