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Mathematical Problems in Engineering
Volume 2015, Article ID 154158, 10 pages
http://dx.doi.org/10.1155/2015/154158
Research Article

Robust Output Feedback Model Predictive Control for a Class of Networked Control Systems with Nonlinear Perturbation

1Designing Institute, Hangzhou Hangyang Co., Ltd., Hangzhou 310014, China
2Department of Information Engineering, Research Center for Smart Agriculture and Forestry, Zhejiang A&F University, Lin’an 311300, China

Received 20 June 2014; Revised 27 August 2014; Accepted 29 August 2014

Academic Editor: Yun-Bo Zhao

Copyright © 2015 Qiuxia 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

This paper is concerned with the design problem of robust dynamic output feedback model predictive controllers for a class of discrete-time systems with time-varying network-induced delays and nonlinear perturbation. The designed controllers achieve on-line suboptimal receding horizon guaranteed cost such that the system can be stabilized for all admissible uncertainties. A novel delay compensation strategy is proposed to eliminate the effects of the time-varying network-induced delays. By using multistep prediction and the receding optimization, the delay-dependent sufficient condition is derived for the existence of delay compensation controllers. By employing the cone complementarity linearization (CCL) idea, a nonlinear minimization problem with linear matrix inequality (LMI) constraints is formulated to design the desired output feedback controllers, and an iterative algorithm involving convex optimization is presented to solve the nonlinear minimization problem. Finally, an example is given to illustrate the feasibility and effectiveness of the proposed results.