The present invention relates to a toe variable-control method for a rear-wheel steering system. The toe variable-control method includes: toe linearization mapping control in which the toe control of a rear wheel (RW) is switched from a constant control value to a variable control value due to the bump/rebound speed application of a controller (21); toe linearization control in which the toe control of the rear wheel is maintained as a constant control value due to bump/rebound position application; and following control in which the toe control of the rear wheel (RW) is maintained as a basic control value (F) due to bump/rebound non-application. Therefore, the method is capable of effectively making direct and quick compensation for a toe variation, and, in particular, maintaining a control value linearization effect in spite of a speed change of a bump/rebound of a handling load movement in a flat area as well as a sudden speed change of a rebound caused by a pothole and the same of a bump caused by a protrusion.

    본 발명의 후륜조향장치의 토우가변제어 방법은 컨트롤러(21)의 범프/리바운드 속도 적용으로 후륜(RW)의 토우 제어(Toe Control)가 상수 제어량에서 가변 제어량으로 전환되는 토우 선형화 매핑 제어, 범프/리바운드 위치 적용으로 상기 후륜(RW)의 토우 제어(Toe Control)가 상수 제어량으로 유지되는 토우 선형화 제어, 범프/리바운드 미적용으로 상기 후륜(RW)의 토우 제어(Toe Control)가 기본 제어량(F)으로 유지되는 요추종 제어를 포함함으로써 직접적이면서 빠른 토우 변화량 보상을 효과적으로 수행하고, 특히 둔턱으로 인한 범프 및 포트홀로 인한 리바운드의 급격한 속도변화는 물론 평탄힌 지역에서 헨들링 하중이동의 범프/리바운드의 속도변화에서도 컨트롤량 선형화 효과가 유지됨을 특징으로 한다.


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    Title :

    Method for Toe Variable Control and Rear Wheel Steering System


    Additional title:

    후륜조향장치의 토우가변제어 방법


    Contributors:
    KIM JONG MIN (author) / KIM BO MIN (author)

    Publication date :

    2020-04-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / B62D MOTOR VEHICLES , Motorfahrzeuge



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