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논문 기본 정보

자료유형
학술대회자료
저자정보
Ary Subagia (Udayana University) H.Y. Kang (전북대학교) S.M.Yang (전북대학교)
저널정보
한국자동차공학회 한국자동차공학회 추계학술대회 및 전시회 2009년 학술대회 및 전시회
발행연도
2009.11
수록면
106 - 111 (6page)

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초록· 키워드

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The directional stability becomes main case in handling vehicle during turn round with high speed. Since turning is the critical motion related to make a vehicle be unstable, steering system is an important to control vehicle’s trajectory. Generally, the vehicle used two wheel steering system. The two wheels steering in high speed turning can give effect unstable motion. It is caused by yawing effect in the centre of gravity of a vehicle. The yawing motion can influence under-steer in low speed and over-steer in high speed. This study is used to control side slip and turning direction of vehicle in low and high speed. The side slip angle (β) is formed by centre of gravity along the longitudinal axis of a vehicle. This angle is influences the yawing motion that make vehicle unstable. The purpose of this study is to control a yawing motion to improve the stability of vehicle on directional turning. It can move the rear wheel to opposite or same direction component to front wheel steering. The rear wheel steering is using a rack and pinion mechanism driven by DC motor. The simulation is determining the rear wheel angle using the control side slip to handle the yawing motion close to yawing motion Ackermann. The vehicle speeds are 20, 40, 60, 80, and 100 km/h in this simulation and the front wheel angle (δ<SUB>f</SUB>) 5, 15, 25 and 35 deg. Active rear steering can be controlling the real yawing motion always very close to the yawing Ackermann hence vehicle can be made stable in the line. In addition, side slip (β) is an effective control to trajectory of under-steer and over-steer because the tires slip angle is low.

목차

Abstract
1. INTRODUCTION
2. ACTIVE REAR STEERING SYSTEM
3. SIMULATION MODEL
4. CONCLUSION
References

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