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Mathematical Problems in Engineering
Volume 2014, Article ID 586029, 12 pages
Research Article

Guaranteed Cost Control for Networked Control Systems under Scheduling Policy Based on Predicted Error

1School of Mechanical Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
2School of Electrical and Electronic Engineering, East China Jiaotong University, Nanchang 330013, China
3School of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, China

Received 26 November 2013; Accepted 8 January 2014; Published 20 March 2014

Academic Editor: Ge Guo

Copyright © 2014 Qixin Zhu 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.


Scheduling policy based on model prediction error is presented to reduce energy consumption and network conflicts at the actuator node, where the characters of networked control systems are considered, such as limited network bandwidth, limited node energy, and high collision probability. The object model is introduced to predict the state of system at the sensor node. And scheduling threshold is set at the controller node. Control signal is transmitted only if the absolute value of prediction error is larger than the threshold value. Furthermore, the model of networked control systems under scheduling policy based on predicted error is established by taking uncertain parameters and long time delay into consideration. The design method of guaranteed cost controller is presented by using the theory of Lyapunov and linear matrix inequality (LMI). Finally, simulations are included to demonstrate the theoretical results.