Adaptive fuzzy control of an active vibration isolator

Authors:
Naibiao Zhou;Kefu Liu;Xiaoping Liu;Bing Chen
Affiliations:
Faculty of Engineering, Lakehead University, Thunder Bay, Canada;Faculty of Engineering, Lakehead University, Thunder Bay, Canada;Faculty of Engineering, Lakehead University, Thunder Bay, Canada;Institute of Complexity Science, Qingdao University, Qingdao, China
Venue:
ISNN'11 Proceedings of the 8th international conference on Advances in neural networks - Volume Part II
Year:
2011

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Abstract

This paper focuses on control of an active vibration isolator that possesses a strong nonlinearity and parameter uncertainty. An adaptive fuzzy controller is developed. A backstepping approach is employed to design the controller. A fuzzy logical system is used to approximate the unknown nonlinear function in the system. The developed controller guarantees the boundedness of all the signals in the closed-loop system. The unique feature of the developed controller is that only one parameter needs to be adapted online. The effectiveness of the controller is demonstrated by a computer simulation.