The present invention relates to a technique for reducing a burden on a steering motor in a vehicle speed region where a high steering gear ratio is used by an active front steering (AFS) system. The present invention comprises: a step of securing restoring torque of a steering wheel based on a steering system including the steering wheel and a steering motor, and a factor value provided from a running state of a vehicle; a step of determining a rack thrust value with respect to the restoring torque; and a step of compensation controlling the steering gear ratio by reflecting a part of the factor value together with the rack thrust value to the steering gear ratio output by the AFS system.

    본 발명은 AFS시스템에 의해 높은 조향기어비가 사용되는 차속 영역에서 조향모터의 부담을 경감하는 기술에 관한 것으로, 본 발명에서는, 스티어링휠과 조향모터를 포함하는 조향계와, 차량의 주행상태로부터 제공되는 팩터값을 기반으로, 스티어링휠의 복원토크를 확보하는 복원토크 확보단계; 상기 복원토크에 대한 랙추력값을 결정하는 랙추력 결정단계; 및 능동 조향 시스템에 의해 출력되는 조향기어비에 상기 랙추력값과 함께 팩터값의 일부를 반영하여 상기 조향기어비를 보상 제어하는 보상제어단계;를 포함하여 구성되는 능동 조향 시스템의 조향 제어방법이 소개된다.


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    Title :

    STEERING CONTROL METHOD OF ACTIVE FRONT STEERING SYSTEM


    Additional title:

    능동 조향 시스템의 조향 제어방법


    Contributors:
    OH JUN WOOK (author) / HAN MIN WOO (author) / LEE JONG HO (author) / HEO JIN HYUCK (author) / CHUNG RAE WOOK (author)

    Publication date :

    2018-03-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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