In a motor control unit able to accurately estimate a motor rotation angle and a vehicle steering system including the motor control unit, a motor rotation direction estimation unit estimates the rough rotational position of a motor based on the combination of the signs of axis inductive voltage values (e± and e²) and the magnitude relation between the absolute values thereof when the absolute value of an inductive voltage value (E) is larger than a predetermined voltage value (Eth) , and estimates the rotation direction of the motor based on a change in the rough rotational position.


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    Title :

    Motor control unit and vehicle steering system


    Additional title:

    Motorsteuereinheit und Fahrzeuglenksystem
    Unité de commande de moteur et système de direction de véhicule


    Contributors:
    TOMITA AKIHIRO (author) / HASEGAWA JUN (author) / NAMBU AKIRA (author)

    Publication date :

    2020-06-10


    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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