The invention relates to a fault-tolerant control method and device for a vehicle steer-by-wire system, a vehicle and a medium, and the method comprises the steps that after the vehicle is powered on, the steering wheel angle variation of the vehicle based on an electrical angle is obtained; obtaining a reference starting point value of the steering wheel angle and a steering wheel angle reference starting point value corresponding to the electrical angle; the steering wheel angle theoretical value of the vehicle is estimated based on the steering wheel angle change amount of the electrical angle, the reference starting point value of the steering wheel angle and the steering wheel angle reference starting point value corresponding to the electrical angle, and fault-tolerant control of vehicle steering is performed based on the steering wheel angle theoretical value when the failure of an angle sensor of the steering wheel is detected. Therefore, the problems that in the related technology, system cost, size and weight can be increased by adding a third angle sensor backup, other system space can be compressed, a whole vehicle degradation strategy for effectively coping with a steering wheel sensor failure working condition scheme is lacked, so that a vehicle cannot continue to run, the actual use experience of a user is affected, and the service life of the user is prolonged are solved. And a relatively large potential safety hazard also exists.

    本申请涉及一种车辆线控转向系统的容错控制方法、装置、车辆及介质,其中,方法包括:在车辆上电后,获取车辆基于电气角度的方向盘角度变化量;获取方向盘角度的参考起点值和电气角度对应的方向盘角度参考起点值;基于电气角度的方向盘角度变化量、方向盘角度的参考起点值和电气角度对应的方向盘角度参考起点值估算车辆的方向盘角度理论值,在检测方向盘的角度传感器失效的情况下,基于方向盘角度理论值进行车辆转向的容错控制。由此,解决了相关技术中,增加第三角度传感器备份会增加系统成本、体积和重量,且会压缩其它系统空间,而缺少有效应对方向盘传感器失效工况方案的整车降级策略会导致车辆无法继续行驶,不仅影响用户的实际使用体验,还存在较大的安全隐患的技术问题。


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    Titel :

    Fault-tolerant control method and device for vehicle steer-by-wire system, vehicle and medium


    Weitere Titelangaben:

    车辆线控转向系统的容错控制方法、装置、车辆及介质


    Beteiligte:
    WU HAOBIAO (Autor:in) / WU KEBO (Autor:in) / WANG YUNYOU (Autor:in)

    Erscheinungsdatum :

    25.04.2025


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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