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Chattering free adaptive fuzzy terminal sliding mode control for second order nonlinear system

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Abstract

A novel fuzzy terminal sliding mode control (FTSMC) scheme is proposed for position tracking of a class of second-order nonlinear uncertain system. In the proposed scheme, we integrate input-output linearization technique to cancel the nonlinearities. By using a function-augmented sliding hyperplane, it is guaranteed that the output tracking error converges to zero in finite time which can be set arbitrarily. The proposed scheme eliminates reaching phase problem, so that the closed-loop system always shows invariance property to parameter uncertainties. Fuzzy logic systems are used to approximate the unknown system functions and switch item. Robust adaptive law is proposed to reduce approximation errors between true nonlinear functions and fuzzy systems, thus chattering phenomenon can be eliminated. Stability of the proposed control scheme is proved and the scheme is applied to an inverted pendulum system. Simulation studies are provided to confirm performance and effectiveness of the proposed control approach.

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This work was supported by the National Natural Science Foundation of China (No. 60474025, 90405017).

Jinkun LIU was born in Heilongjiang Province, 1965. He received Ph.D. degree in department of automatic control from Northeastern University, China in 1997. Having been a two-year post-doctor at automatic department in Zhejiang University from 1997 to 1999, he joined department of automatic control, Beijing University of Aeronautics and Astronautics as an associate professor. His research includes motion control, intelligent control and robust control.

Fuchun SUN received the B.S. and M.S. degrees from Naval Aeronatical Engineering Academy, Yantai, China, in 1986 and 1989, respectively, and Ph.D. degree from the Department of Computer Science and Technology, Tsinghua University, Beijing, China, in 1998. He worked over four years for the Department of Automatic Control at Naval Aeronautical Engineering Academy. From 1998 to 2000 he was a Postdoctoral Fellow of the Department of Automation at Tsinghua University, Beijing, China. Now he is a professor in the Department of Computer Science and Technology, Tsinghua University, Beijing, China. His research interests include intelligent control, network control and management, neural networks, fuzzy systems, variable structure control, nonlinear systems and robotics. Dr. Sun is a member of the IEEE Control System Society. He is the recipient of the excellent Doctoral Dissertation Prize of China in 2000.

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Liu, J., Sun, F. Chattering free adaptive fuzzy terminal sliding mode control for second order nonlinear system. J. Control Theory Appl. 4, 385–391 (2006). https://doi.org/10.1007/s11768-006-5334-6

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  • DOI: https://doi.org/10.1007/s11768-006-5334-6

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