Further robust stability analysis for uncertain Takagi-Sugeno fuzzy systems with time-varying delay via relaxed integral inequality

Abstract This paper focuses on robust stability analysis for uncertain Takagi–Sugeno fuzzy systems with time-varying delays. Two delay-product-type terms are introduced for constructing a new Lyapunov–Krasovskii functional, which contains more information of time-varying delay. And a novel relaxed integral inequality is applied to estimate the derivative of LKF for achieving reduction of estimation gap. As a result, several further robust stability criteria with less conservativeness are proposed. Finally, three numerical examples and an application to control of a truck-trailer are provided to show the effectiveness and advantages of the presented methods.

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