Abstract
Stability and \(L_2\)-gain control for positive Takagi–Sugeno (T–S) fuzzy systems are further studied in this brief paper. First, considering that the system states are positive, some sufficient conditions of exponential asymptotic stability are obtained by applying a copositive Lyapunov function with membership-function-dependent (MFD) Lyapunov matrices. Based on a preset switching rule, the conditions are expressed as linear matrix inequalities by eliminating the nonconvex factors due to the time derivative of MFD Lyapunov matrices. Then, stability is extended to stabilization by designing a switching controller with time-varying controller gains such that the \(L_{2}\)-gain performance requirements are satisfied. In addition, a quadratic switching strategy is established to further reduce conservativeness. Finally, the applicability and validity of the theoretical results are validated by two examples.
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The simulation data of the current study are available from the corresponding author on reasonable request.
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This work was supported in part by the National Natural Science Foundation of China under Grant 62173123, in part by the Natural Science Foundation of Hebei Province under Grant F2021202045.
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All authors contributed to the study conception and design. The main idea and method were proposed by [LW]. The first draft of the manuscript was written by [BZ]. [XX] and [H-KL] commented on previous versions of the manuscript. All authors read and approved the final manuscript
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Zheng, B., Wang, L., Xie, X. et al. Stability analysis and \(L_{2}\)-gain control for positive fuzzy systems by applying a membership-function-dependent Lyapunov function. Nonlinear Dyn 111, 22255–22265 (2023). https://doi.org/10.1007/s11071-023-09002-8
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DOI: https://doi.org/10.1007/s11071-023-09002-8