[Problem] An object of the present invention is to provide an electric power steering apparatus for calculating a front-wheel estimated steering angle based on right and left front wheel speeds, calculating a rear-wheel estimated steering angle based on right and left rear wheel speeds, calculating a 4-wheel estimated steering angle by using the front-wheel estimated steering angle and the rear-wheel estimated steering angle, and correcting a probability of the 4-wheel estimated steering angle or correcting an output of a control with the 4-wheel estimated steering angle by using the front-wheel estimated steering angle, the rear-wheel estimated steering angle and 4 wheel speeds, thereby preventing an irregular output. [Means for Solving] The present invention is an electric power steering apparatus which has a steering torque sensor to detect a steering torque, a current command value calculating section to calculate a current command value based on the steering torque, a motor to apply an assist torque, and a motor driving control section to drive and control the motor, comprises: a control function with an input steering angle; and a steering angle estimating/calculating section to calculate a front-wheel estimated steering angle and a rear-wheel estimated steering angle based on a 4 wheel speeds and calculate a 4-wheel estimated steering angle, wherein the 4-wheel estimated steering angle is used for a steering angle control.


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    Title :

    ELECTRICAL POWER STEERING DEVICE


    Additional title:

    ELEKTRISCHE SERVOLENKVORRICHTUNG
    DISPOSITIF DE DIRECTION ASSISTÉE ÉLECTRIQUE


    Contributors:

    Publication date :

    2019-05-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / B62D MOTOR VEHICLES , Motorfahrzeuge



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