The invention discloses an automobile electric hydraulic power steering system control method. A controller collects a vehicle speed signal and a steering wheel angle speed signal, and a motor target speed value is determined by an assistance characteristic curve determined by vehicle parameters and EHPS system parameters according to a steering wheel torque preferred by a driver and a variation curve of lateral acceleration and travel speed. By virtue of a double closed loop control system of outer ring rotational speed control and inner ring current control, the revolving speed of an oil pump-driven motor is subjected to self-adaptive fuzzy PID control, the target speed of an oil pump-driving motor is controlled, and the output flow of a hydraulic oil pump is indirectly controlled, so the relaxation and convenience of directional steering and steering hand feeling are satisfied, the purpose of energy consumption reduction is also achieved, and the manipulation and safety of automobile driving are effectively improved.


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    Title :

    Automobile electric hydraulic power steering system control method


    Contributors:
    XIA JIANLIN (author) / XIA CHANGGAO (author) / GAO XIANG (author) / SHANG GAOGAO (author)

    Publication date :

    2016-01-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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