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Mathematical Problems in Engineering
Volume 2014, Article ID 890543, 8 pages
Research Article

Switched Quantization Level Control of Networked Control Systems with Packet Dropouts

School of Control and Computer Engineering, North China Electric Power University, Beijing 102206, China

Received 2 December 2013; Revised 28 January 2014; Accepted 30 January 2014; Published 12 March 2014

Academic Editor: Yang Shi

Copyright © 2014 Shuo Wang 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 investigates the relationship between the maximum allowable dropout bound and the quantization density. Networked Control System (NCS) is described as a time-delay switched system with constrained switching signals. A switched dynamic output feedback controller with prescribed disturbance attenuation level is designed via a cone complement linearization approach. A novel stability criterion is obtained by switched system theory. Furthermore, finding an appropriate quantization density used when packet dropout occurs is converted to an optimization problem.