Event-triggered H∞ filtering of discrete-time switched linear systems
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Xiaoqing Xiao1, Ju H Park2, Lei Zhou3
1School of Electronics and Information, Nantong University, Jiangsu, 226019, PR China; Department of Electrical Engineering, Yeungnam University, Kyongson, 38541, Republic of Korea; School of Automation, Nanjing University of Science and Technology, Nanjing, 210094, PR China.
Abstract:
In this paper, the event-triggered H∞ filtering problem for discrete-time switched linear systems is addressed. The filter and the system are connected via a communication network, and the transmitted information of system output and switching signal is determined by an event-triggered transmission scheme, which contains system mode dependent parameters. Consequently, the asynchronous switching between the filter and the system occurs, and the filtering error system is modeled as a switched system with augmented switching signal by using the merging switching signal technique. Then, by the multiple Lyapunov function method, a new sufficient condition is obtained such that the filtering error system is exponentially asymptotically stable and satisfies the weighted H∞ performance. Finally, the design method for the filter and event-triggered parameters is proposed by solving a set of linear matrix inequalities. Numerical simulations illustrate the effectiveness of the proposed approach.
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