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기동성을 위한 후륜 조향 차량의 최적 성능에 대한 연구 : An Experimental Study of Optimal Performance of Rear Wheel Steering Vehicle for Maneuverability
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- Authors
- Issue Date
- 2019-06
- Publisher
- 사단법인 한국자동차안전학회
- Citation
- 자동차안전학회지, Vol.11 No.2, pp.23-28
- Abstract
- This paper presents an optimal performance of rear wheel steering vehicle for maneuverability. The maneuverability of vehicle is evaluated in terms of yaw rate, body slip angle and driver input. The maneuverability of vehicle can be improved by rear wheel steering system. To obtain optimal performance of rear wheel steering vehicle, the optimal control history is designed. The high dimensional trajectory optimization problem is solved by formulating a quadratic program considering rear wheel steer input. To evaluate handling performance 7 degree-of-freedom vehicle model with actuation sub-models is designed. A step steer test is conducted to evaluate rear wheel steering vehicle. A response time, a TB factor, overshoot, and yaw rate gain are investigated through objective criteria, assessment webs. The handling performance of vehicle is evaluated via computer simulations. It has been shown from simulation studies that optimal controlled rear wheel steering vehicle provides improved performance compared to others.
- ISSN
- 2005-9396
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