STEERING CONTROL METHOD AND SYSTEM FOR REAR WHEEL STEERING

The present invention relates to a technique for improving driving stability and yaw response of a vehicle by controlling a rear wheel by reflecting a driving situation of a vehicle. According to the present invention, disclsoed are a rear wheel steering control method and a system, wherein a vehicl...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KIM SEUNG KI, PARK JANG HEE, CHUNG RAE WOOK, HUH KUN SOO, OH JUN WOOK, HEO JUN HAENG
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS MOTOR VEHICLES PERFORMING OPERATIONS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT TRAILERS TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	The present invention relates to a technique for improving driving stability and yaw response of a vehicle by controlling a rear wheel by reflecting a driving situation of a vehicle. According to the present invention, disclsoed are a rear wheel steering control method and a system, wherein a vehicle speed and a front wheel steering angle are input to calculate a rear wheel dynamic phase control amount, a tire slip angle is estimated in a driving situation that rear wheel dynamic phase control is performed, a final rear wheel steering control value is calculated by reflecting a control weight value proportional to the tire slip angle estimation value in the rear wheel dynamic phase control amount, and the rear wheel is steered to the final rear wheel steering control value. 본 발명은 차량의 주행상황을 반영하여 후륜을 제어하여 차량의 주행 안정성 및 요 응답성을 향상시키는 기술에 관한 것으로, 본 발명에서는, 차속 및 전륜조향각을 입력받아, 후륜 동역상제어량을 연산하고; 후륜의 동상 제어가 이루어지는 주행 상황시, 타이어슬립각을 추정하며; 상기 후륜 동상제어량에 타이어슬립각 추정값에 비례하는 제어가중치를 반영하여 최종 후륜조향 제어값을 산출고; 상기 최종 후륜조향 제어값으로 후륜을 조향하는 것을 특징으로 하는 후륜 조향 제어방법 및 시스템이 소개된다.