Adaptive event-triggered fixed-time output-feedback control for switched nonlinear systems

Yan Yan, Xiqin He, Libing Wu and Qingkun Yu

International Journal of Systems Science, 2025, vol. 56, issue 14, 3316-3331

Abstract: The adaptive event-triggered fixed-time control for switched nonlinear systems with unmeasured states is addressed. Firstly, the state observer is constructed for switched nonlinear systems to estimate the unmeasured states, and the output-feedback approach is presented. Next, fuzzy logic systems (FLSs) are utilised to approximate the unknown functions, the novel event-triggered fixed-time control strategy is addressed based on common Lyapunov function (CLF) method and backstepping technology, which can greatly reduce the communication load. The asynchronous error compensation function is introduced into the designed controller and triggering mechanism, which effectively solves the asynchronous switching problem caused by the interaction of triggering and switching. Eventually, all closed-loop signals are assured to be bounded, the system output tracks the given reference trajectory at a fixed time, and the convergence time does not depend on the initial states of system. Two illustrative examples are shown to verify the effectiveness of the developed scheme.

Date: 2025
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DOI: 10.1080/00207721.2025.2468867

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