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Indirect adaptive robust fuzzy control for a class of MIMO nonlinear systems

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3 Author(s)
Yanjun Liu ; Dept. of Math. & Phys., Liaoning Univ. of Technol., Jinzhou ; Shaocheng Tong ; Yongming Li

In this paper, an indirect adaptive robust fuzzy control method is proposed for a class of uncertain MIMO nonlinear systems. Fuzzy logic systems (FLS) are used to approximate the unknown dynamics of the system. The effect of both the function approximation error and the external disturbances is compensated by the use of the robust controller. ldquoDominant inputrdquo concept is introduced to solve the coupling problem of MIMO systems. The online computation burden is greatly reduced since only uncertainty bounds are tuned online. The proposed method can guarantee all signals in the closed-loop system are uniformly bounded and the tracking error exponentially converges to a small neighborhood of zero.

Published in:

Control and Decision Conference, 2008. CCDC 2008. Chinese

Date of Conference:

2-4 July 2008