期刊
IEEE TRANSACTIONS ON CYBERNETICS
卷 49, 期 7, 页码 2806-2819出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCYB.2018.2837626
关键词
Event-triggered scheme; input-to-state stability (ISS); mixed time delays; nonlinear systems; observer-based control; Zeno behavior
类别
资金
- National Natural Science Foundation of China [11501065, 61525305, 61773004, 61773209, 61503001]
- Research Fund for the Taishan Scholar Project of Shandong Province of China
- Program of Chongqing Innovation Team Project in University [CXTDX201601022]
- Basic and Frontier Research Projects of Chongqing [cstc2015jcyjA00033, cstc2017jcyjA1353]
- Alexander von Humboldt Foundation of Germany
In this paper, the input-to-state stabilization problem is investigated for a class of nonlinear delayed systems with exogenous disturbances. The model under consideration is general that covers for both mixed time-delays and Lipschitz-type nonlinearities. An observer-based controller is designed such that the closed-loop system is stable under an event-triggered mechanism. Two separate event-triggered strategies are proposed in sensor-to-observer (S/O) and controller-to-actuator (C/A) channels, respectively, in order to reduce the updating frequencies of the sensor and the controller with guaranteed performance requirements. The notion of input-to-state practical stability is introduced to characterize the performance of the controlled system that caters for the influence from both disturbances and event-triggered schemes. The estimates of the upper bounds of the delayed states and two measurement errors are employed to analyze and further exclude the Zeno behavior resulting from the proposed event-triggered schemes in S/O and C/A channels. The controller gain matrices and the event-trigger parameters are co-designed in terms of the feasibility of certain matrix inequalities. A numerical simulation example is provided to illustrate the effectiveness of theoretical results.
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