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Augmented Lyapunov-Krasovskiń≠ functional approaches to robust stability criteria for uncertain Takagi-Sugeno fuzzy systems with time-varying delays. (English) Zbl 1251.93072
Summary: This paper considers the problem of robust stability analysis for uncertain Takagi-Sugeno (T-S) fuzzy systems with time-varying delays. By constructing an augmented Lyapunov-Krasovskii functional and utilizing Finsler’s Lemma, a novel criterion for delay-dependent robust stability of T-S fuzzy model with time-varying delay is derived in terms of linear matrix inequalities (LMIs). Also, a further improved stability criterion is proposed by utilizing free weighting techniques. Finally, three numerical examples are included to show the superiority of the proposed criteria.

MSC:
93C42 Fuzzy control/observation systems
93D09 Robust stability
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