The present invention relates to an electric power steering system, and a control method thereof. The electric power steering system comprises: a torque sensor measuring column torque, a steering angle sensor measuring the steering angle speed; a vehicle speed sensor measuring the speed of a vehicle; and a control unit determining whether or not impulse type strong disturbance occurs based on the steering angle speed measured by the steering angle sensor and the column torque measured through the torque sensor, computing road compensation torque based on the vehicle speed measured by the column torque, the steering angle speed, and the vehicle speed sensor when it is determined that the impulse type strong disturbance occurs, and computing final assisting torque by adding the computed road compensation torque to the predetermined assisting torque.

    본 발명은 전동식 파워 스티어링 시스템 및 그 제어방법에 관한 것으로, 컬럼토크를 측정하는 토크센서; 조향각속도를 측정하는 조향각센서; 차량의 속도를 측정하는 차속센서; 및 상기 토크센서를 통해 측정된 컬럼토크 및 상기 조향각센서를 통해 측정된 조향각속도에 근거하여 임펄스성 강외란의 발생여부를 판단하고, 상기 임펄스성 강외란이 발생한 것으로 판단되면 상기 컬럼토크, 상기 조향각속도 및 상기 차속센서를 통해 측정된 차속에 근거하여 노면 보상 토크를 산출하며, 미리 정해진 보조 토크에 상기 산출된 노면 보상 토크를 가산하여 최종 보조 토크를 산출하는 제어부를 포함하는 것을 특징으로 한다.


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    Title :

    MOTOR DRIVEN POWER STEERING SYSTEM AND CONTROL METHOD THEREOF


    Additional title:

    전동식 파워 스티어링 시스템 및 그 제어방법


    Contributors:
    JANG SEOK HWAN (author) / OH SE WOOK (author)

    Publication date :

    2016-07-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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