Rui Chen, Qiang Ling, Jie Fang, Xihong Fei, Duansong Wang
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A bit rate condition for feedback stabilization of uncertain switched systems with external disturbances based on event triggering
This paper studies the input-to-state stability of an uncertain switched linear system with external disturbances, whose feedback loop is closed over a digital communication network. In the network, only a finite bit rate can be provided to transmit the feedback signal and unknown network delay always exists. By using reachable set approximation and propagation methods, it can well handle with the effects of model uncertainty, external disturbances and network delay on the stability of the system. To save network resources, event-triggered sampling is taken here. Under the event-triggered sampling strategies, a new encoder is proposed, which consumes less feedback bits than the conventional time-triggered encoders. It is proven that even in the existence of model uncertainty, external disturbances and network delay, the proposed event-triggered sampling strategies require a lower feedback bit rate to stabilize the switched system than conventional periodic sampling methods.
期刊介绍:
IET Control Theory & Applications is devoted to control systems in the broadest sense, covering new theoretical results and the applications of new and established control methods. Among the topics of interest are system modelling, identification and simulation, the analysis and design of control systems (including computer-aided design), and practical implementation. The scope encompasses technological, economic, physiological (biomedical) and other systems, including man-machine interfaces.
Most of the papers published deal with original work from industrial and government laboratories and universities, but subject reviews and tutorial expositions of current methods are welcomed. Correspondence discussing published papers is also welcomed.
Applications papers need not necessarily involve new theory. Papers which describe new realisations of established methods, or control techniques applied in a novel situation, or practical studies which compare various designs, would be of interest. Of particular value are theoretical papers which discuss the applicability of new work or applications which engender new theoretical applications.