The present invention relates to a rear-wheel steering system and a control method thereof. The rear-wheel steering system comprises: a rack configured to transmit a driving force generated from a rear-wheel steering motor to rear wheels; a first correction module configured to, when an engine is started, detect the position of the rack using a displacement sensor and calculate a first correction value that is different between the detected position and a neutral position; a second correction module configured to, when the engine is started, detect the position of the rack using a motor position sensor that detects the rotation angle of the rear-wheel steering motor and calculate a second correction value that is different between the detected position and the neutral position; a comparison determiner configured to compare the first correction value and the second correction value to determine whether the displacement sensor has malfunctioned; and a steering controller configured to control the rear-wheel steering motor. Accordingly, it is possible to determine whether an error occurs in the displacement sensor and to return the rack to the neutral position even when the error has occurred in the displacement sensor.

    본 발명은 후륜 조향 시스템 및 그 제어방법에 관한 것으로서, 후륜 구동 모터로부터의 구동력을 후륜에 전달하는 랙; 엔진의 시동시 변위 센서를 이용하여 랙의 위치를 감지하여 중립위치와의 차이인 제1보정치를 산출하는 제1보정모듈; 엔진의 시동시 후륜 구동 모터의 회전각을 감지하는 모터 위치 센서를 이용하여 랙의 위치를 감지하여 중립위치와의 차이인 제2보정치를 산출하는 제2보정모듈; 제1보정치와 제2보정치를 비교하여 변위 센서의 오작동 여부를 판단하는 비교판단부; 후륜 구동 모터의 동작을 제어하는 조향 제어부;를 포함한다. 이에 의해, 변위 센서의 에러 발생 여부를 판단할 수 있을 뿐만 아니라, 변위 센서에 에러가 발생한 경우에도 랙을 중립위치로 복귀시킬 수 있다.


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    Titel :

    Rear Wheel Steering System and Controlling Method Thereof


    Weitere Titelangaben:

    후륜 조향 시스템 및 그 제어방법


    Beteiligte:
    LEE JIN HWAN (Autor:in) / KIM DAE SUNG (Autor:in) / LEE SEUNG CHEOL (Autor:in)

    Erscheinungsdatum :

    2019-03-20


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Koreanisch


    Klassifikation :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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