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Abstract and Applied Analysis
Volume 2014, Article ID 879085, 13 pages
Research Article

Fault Detection for Wireless Networked Control Systems with Stochastic Switching Topology and Time Delay

1School of Automation, Nanjing University of Science & Technology, Nanjing 210094, China
2Department of Engineering, Faculty of Engineering and Science, University of Agder, 4898 Grimstad, Norway
3Department of Mathematics, Yangzhou University, Yangzhou 225002, China
4Faculty of Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia
5Electrical and Computer Engineering Department, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA

Received 10 April 2014; Revised 26 May 2014; Accepted 27 May 2014; Published 24 June 2014

Academic Editor: Derui Ding

Copyright © 2014 Pengfei Guo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper deals with the fault detection problem for a class of discrete-time wireless networked control systems described by switching topology with uncertainties and disturbances. System states of each individual node are affected not only by its own measurements, but also by other nodes’ measurements according to a certain network topology. As the topology of system can be switched in a stochastic way, we aim to design fault detection observers for nodes in the dynamic time-delay systems. By using the Lyapunov method and stochastic analysis techniques, sufficient conditions are acquired to guarantee the existence of the filters satisfying the performance constraint, and observer gains are derived by solving linear matrix inequalities. Finally, an illustrated example is provided to verify the effectiveness of the theoretical results.