Intelligent control of uncertain switched nonlinear plants: Output-feedback control of switched fuzzy time-delay systems revisited

Abstract

A solution of an intelligent hybrid control for a class of complex nonlinear uncertainty plants via switched T-S fuzzy-system models possessing time delays and uncertainties is developed. The intelligent, fuzzy-system based, robust, output feedback control for this class of switched systems is investigated and solved by using the common and the multiple Lyapunov functions approaches as appropriate. Fuzzy state observer is constructed and employed to design a state-dependent switching law. Fuzzy output feedback controllers are designed by using PDC scheme such that the closed-loop system along with the designed controllers possesses robustness for all admissible uncertainties. An illustrative example along with numerical and simulation results are presented to demonstrate feasibility and effectiveness of the proposed intelligent control design.