Provided is an electric power steering apparatus capable of achieving stable sensorless control having a small vibration by correcting an estimation error contained in an estimated angle to suppress a torque fluctuation caused by the estimation error. The electric power steering apparatus includes: a torque sensor configured to detect a steering torque of a driver; a motor configured to assist in a steering force of the driver; a rotation angle estimation unit configured to estimate a rotation angle of the motor to output an estimated angle; a correction signal calculation unit configured to calculate a correction signal based on the steering torque; a frequency separation unit configured to separate the estimated angle into a first frequency component and a second frequency component; an estimated angle correction unit configured to calculate, as a control angle, a value obtained by adding a second-frequency-component corrected signal, which is obtained by correcting the second frequency component based on the correction signal, to the first frequency component; and an electric power supply unit configured to supply electric power to the motor based on the control angle.


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    Title :

    ELECTRIC POWER STEERING APPARATUS AND ELECTRIC POWER STEERING CONTROL METHOD


    Additional title:

    ELEKTRISCHE SERVOLENKVORRICHTUNG UND STEUERUNGSVERFAHREN FÜR ELEKTRISCHE SERVOLENKUNG
    APPAREIL DE DIRECTION ASSISTÉE ÉLECTRIQUE ET PROCÉDÉ DE COMMANDE DE DIRECTION ASSISTÉE ÉLECTRIQUE


    Contributors:

    Publication date :

    2021-02-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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