Journal
AUTOMATICA
Volume 94, Issue -, Pages 324-333Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.automatica.2018.04.042
Keywords
Periodic event-triggered output feedback control; Nonlinear uncertainties; Time-varying disturbance; Feedback domination; Disturbance compensation
Funding
- National Natural Science Foundation of China [61473080, 61573099, 61633003, 61750110525]
- Fundamental Research Funds for the Central Universities [2242016R30011]
- Australian Research Council [DP120104986]
- Innovation Program in Jiangsu Province [KYLX16-0229]
- Scientific Research Foundation of Graduate School of Southeast University [3208007702]
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This paper investigates the periodic event-triggered robust output feedback control problem for a class of nonlinear uncertain systems subject to time-varying disturbance. By means of the feedback domination approach and disturbance compensation technique, a new framework of periodic event-triggered robust control strategy is developed in the form of output feedback, which encompasses a discrete-time event-triggering transmission scheme that is only intermittently monitored at sampling instants and a discrete-time output feedback controller consisting of a set of linear difference equations. The proposed robust method may reduce the communication resource utilization as compared to the non-event triggering schemes while maintaining a desirable closed-loop system performance even in the presence of a general class of time-varying disturbance and nonlinear uncertainties. The closed-loop system under the proposed control scheme is actually modeled as a hybrid system, and it is shown that the global practical stability of the closed-loop hybrid system is guaranteed by selecting a sufficiently large scaling gain and a sufficiently small sampling period. Finally, the experimental results on a DC-DC buck power converter are presented to illustrate the effectiveness of the proposed control approaches. (C) 2018 Elsevier Ltd. All rights reserved.
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