The invention relates to a control device and a controller for an electric power steering system based on an alternating current asynchronous motor. The control device establishes a steering wheel torque rotation angle signal acquisition circuit, a motor rotor position signal acquisition circuit, an alternating current asynchronous motor driving circuit and a CAN communication circuit with a main control chip as the core. The controller comprises an electric power steering control module, an alternating current asynchronous motor control module, a motor rotor position signal resolving module and a steering wheel torque rotation angle signal resolving module, wherein the electric power steering control module comprises a multipoint fold line type basic power control sub-module, a motor compensation control sub-module, an active return control sub-module and a motor q-axis direction target current calculation sub-module. The control device and the controller achieves good control over the electric power steering system based on the alternating current asynchronous motor through a reasonable architecture of a control hardware platform and control software, and enables the electric power steering system to be more reliable and complete.


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    Title :

    Control device and controller for electric power steering system based on alternating current asynchronous motor


    Contributors:
    QIN MIN (author) / WU ZHENXIN (author) / WANG WENBIN (author) / LU BINGWU (author) / FU ZHEN (author)

    Publication date :

    2015-05-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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