Journal
AUTOMATICA
Volume 50, Issue 7, Pages 1852-1859Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.automatica.2014.04.026
Keywords
Event-driven control; Observers; Sampled-data control; Networked control systems (NCSs)
Funding
- National Natural Science Foundation of China [61104098]
- Research Grants Council of the Hong Kong Special Administrative Region of China [CityU/113311]
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This paper concerns the problem of event-driven observer-based output feedback control of linear systems. Contrary to normal sampled-data control systems, where the controller is updated periodically, in event-driven systems, it is updated only when an event happens, and a typical event is defined as some error signals exceeding a given threshold. Both continuous- and discrete-time event detector cases are considered. It is shown that even with the significantly reduced sampling frequency, the global uniform ultimate boundedness of the event-driven closed-loop systems can also be guaranteed. A numerical example is finally used to illustrate the effectiveness and advantages of the proposed approaches. (C) 2014 Elsevier Ltd. All rights reserved.
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