A motor control method includes acquiring a component BEMFα on an α-axis and a component BEMFβ on a β-axis of counter electromotive force of a motor in an αβ-fixed coordinate system; performing time differentiation on the component BEMFα on the α-axis and the component BEMFβ on the β-axis; obtaining a difference value between first and second multiplication values, the first multiplication value being obtained by multiplying the component BEMFα on the α-axis by a differential value of the component BEMFβ on the β-axis, the second multiplication value being obtained by multiplying the component BEMFβ on the β-axis by a differential value of the component BEMFα on the α-axis; detecting a rotation direction of the rotor based on the difference value; and controlling the motor based on a detection result of the rotation direction of the rotor.


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    Title :

    Motor control method, motor control system, and electric power steering system


    Contributors:

    Publication date :

    2020-02-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B62D MOTOR VEHICLES , Motorfahrzeuge



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