期刊
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
卷 54, 期 9, 页码 1892-1909出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00207721.2023.2210144
关键词
Event-triggered control; adaptive fuzzy control; full state constraints; time-varying delays; Lyapunov-Krasovskii functionals; barrier Lyapunov function
This paper addresses the problem of event-triggered control for a class of nonlinear systems with unknown control coefficients, time-varying delays, full state constraints and external disturbances simultaneously. An adaptive event-triggered controller is designed based on integral Barrier-Lyapunov Functionals to account for the impacts of complete state constraints, unknown time-varying delays and external disturbances. Fuzzy logic systems are used to roughly estimate the unknown functions of systems, and the event-triggered control technique is implemented to significantly reduce system redundancy. The proposed design scheme is less conservative and has a wider application range, demonstrating its effectiveness through simulation results.
This paper addresses the problem of event-triggered control for a class of nonlinear systems with unknown control coefficients, time-varying delays, full state constraints and external disturbances, simultaneously. Firstly, based on integral Barrier-Lyapunov Functionals, an adaptive event-triggered controller is designed to account for the impacts of complete state constraints, unknown time-varying delays and external disturbances. Using fuzzy logic systems, the unknown functions of systems are then roughly estimated. The system redundancy can be significantly reduced by implementing the event-triggered control technique in the meanwhile. By introducing the separation technique and Lyapunov-Krasovskii functionals, it is shown that the strategy can ensure tracking performance greatly and all the closed-loop signals of the system are bounded. Compared with the existing results, the proposed design scheme is less conservative and has a wilder application range. Finally, the simulation results show the effectiveness of the proposed approach.
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