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Mathematical Problems in Engineering
Volume 2013 (2013), Article ID 430630, 10 pages
http://dx.doi.org/10.1155/2013/430630
Research Article

An LMI-Based Control Approach for Networked Control Systems with Deadband Scheduling Scheme

School of Information & Engineering, Huzhou Teachers College, Zhejiang 313000, China

Received 20 July 2013; Revised 16 September 2013; Accepted 16 September 2013

Academic Editor: Baoyong Zhang

Copyright © 2013 Hui-ying Chen 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.

Abstract

Due to the bandwidth constraints in the networked control systems (NCSs), a deadband scheduling strategy is proposed to reduce the data transmission rate of network nodes. A discrete-time model of NCSs is established with both deadband scheduling and network-induced time-delay. By employing the Lyapunov functional and LMI approach, a state feedback controller is designed to ensure the closed-loop system asymptotically to be stable with performance index. Simulation results show that the introduced deadband scheduling strategy can ensure the control performance of the system and effectively reduce the node's data transmission rate.