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http://dx.doi.org/10.7467/KSAE.2012.20.2.015

A Study on Lateral Stability Enhancement of 4WS Vehicle with Active Front Wheel Steer System  

Song, Jeong-Hoon (Department of Mechatronics Engineering, Tongmyong University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.20, no.2, 2012 , pp. 15-20 More about this Journal
Abstract
This study is to propose and develop an integrated dynamics control system to improve and enhance the lateral stability and handling performance. To achieve this target, we integrate an AFS and a 4WS systems with a fuzzy logic controller. The IDCS determines active additional steering angle of front wheel and controls the steering angle of rear wheel. The results show that the IDCS improves the lateral stability and controllability on dry asphalt and snow paved road when double lane change and step steering inputs are applied. Yaw rate of the IDCS vehicle tracks reference yaw rate very well and body slip angle is reduced about by 50%. Response time of the IDCS vehicle is also decreased.
Keywords
IDCS(Integrated Dynamics Control with Steering); AFS(Active Front Steering); 4WS(Four Wheel Steer); Fuzzy logic control; Yaw rate; Body slip angle;
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  • Reference
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