Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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A Fuzzy-Logic Controller for an Electrically Driven Steering System for a Motorcar

  • Lee, Sang-Heon (Centre for Advanced Manufacturing Research, University of South Australia) ;
  • Kim, Il-Soo (Department of Mechanical Engineering, Mokpo National University) ;
  • Jayantha katupitiya (School of Mech. & Manf. Eng. University of New South Wales, Sydney, NSW)
  • Published : 2002.08.01
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Abstract

This paper presents an application where a Fuzzy-Logic Controller (FLC) is used at a supervisory level to implement mutual coordination of the steering of the two front wheels of a motorcar. The two front wheels are steered by two independent discrete time state feedback controllers with a view to optimize the steering slip angles. The functions of the two controllers are tied together by way of a FLC. Because of the presence of unmodelled dynamics and disturbances acting on the two sides, it is difficult to achieve the desired performance using conventional control systems. This is the primary reason that FLC is emploged to solve the problem. The results show that the implemented system achieved desired coupling between the two independent systems and thereby reduces the difference between the two steered angles.

Keywords

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