The invention discloses a drive-by-wire electro-hydraulic steering system with a fault tolerance function. The drive-by-wire electro-hydraulic steering system comprises a road feeling simulation assembly, a downward turning execution assembly, a hydraulic assembly and an electronic control unit (ECU). The ECU is provided with a drive-by-wire electro-hydraulic control system with a fault-tolerant function, and the drive-by-wire electro-hydraulic control system comprises a vehicle state acquisition module, a fault diagnosis module, an instruction corner generation module and a corner tracking control module. According to the steering system, on the basis of an original drive-by-wire electro-hydraulic steering system, by additionally arranging a hydraulic valve and transforming a hydraulic oil way, when a steering execution motor breaks down, normal steering can still be achieved through drive-by-wire full hydraulic pressure, and the provided control method is beneficial to improving the steering angle tracking precision in a drive-by-wire full hydraulic steering mode.

    本发明公开了一种具有容错功能的线控电液转向系统,包括路感模拟总成、下转执行总成、液压总成和电子控制单元ECU。所述的电子控制单元ECU具有容错功能的线控电液控制系统,所述的线控电液控制系统包括车辆状态获取模块、故障诊断模块、指令转角生成模块和转角跟踪控制模块。该转向系统在原有线控电液转向系统的基础之上,通过加装液压阀及对液压油路的改造,使得在转向执行电机发生故障时,仍能通过线控全液压实现正常转向,并且提出的控制方法有助于提高线控全液压转向模式下的转角跟踪精度。


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    Title :

    Drive-by-wire electro-hydraulic steering system with fault tolerance function and control method of drive-by-wire electro-hydraulic steering system


    Additional title:

    一种具有容错功能的线控电液转向系统及其控制方法


    Contributors:
    HUA YIFENG (author) / XIE JUN (author) / WANG CHUNHONG (author) / XU MIAO (author) / SUN SONG (author)

    Publication date :

    2024-09-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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