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Robust passive control for discrete-time T-S fuzzy systems with delays

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2 Author(s)
Duan Guangren ; Center for Control Theory and Guidance Technology, Harbin Inst. of Technology, Harbin 150001, P. R. China ; Li Yanjiang

This article deals with the robust stability analysis and passivity of uncertain discrete-time TakagiSugeno (T-S) fuzzy systems with time delays. The T-S fuzzy model with parametric uncertainties can approximate nonlinear uncertain systems at any precision. A sufficient condition on the existence of robust passive controller is established based on the Lyapunov stability theory. With the help of linear matrix inequality (LMI) method, robust passive controllers are designed so that the closed-loop system is robust stable and strictly passive. Furthermore, a convex optimization problem with LMI constraints is formulated to design robust passive controllers with the maximum dissipation rate. A numerical example illustrates the validity of the proposed method.

Published in:

Journal of Systems Engineering and Electronics  (Volume:20 ,  Issue: 5 )