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Journal of Electrical and Computer Engineering
Volume 2014 (2014), Article ID 158404, 8 pages
http://dx.doi.org/10.1155/2014/158404
Research Article

Joint Design of Transmission Rate and Control for Wireless Sensor Networked Control Systems

1Lab of Operation and Control, Shenyang University of Chemical Technology, Liaoning 110142, China
2Key Laboratory of Networked Control Systems, Shenyang Institute of Automation, Chinese Academy of Sciences, Liaoning 110016, China
3College of Information Engineering, Shenyang University of Chemical Technology, Liaoning 110142, China

Received 19 March 2014; Revised 11 April 2014; Accepted 13 April 2014; Published 28 May 2014

Academic Editor: Jun Cheng

Copyright © 2014 Jinna Li 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 transmission rate and control codesign of wireless sensor networked control systems (WSNCS) with time-varying delay. Jointly designing transmission rate and control is an attractive paradigm for WSNCS, since the control performance of WSNCS is highly sensitive to resource-constrained communication networks. The main idea of devised scheme is searching an optimal event-triggered transmission condition on the premise that wireless link capacity constraint is satisfied and stability of systems is guaranteed. The main aim of devised scheme is to greatly optimize control performance of WSNCS. First, two wireless network architectures characterized by multihop and star topology are put forward. Secondly, a model of WSNCS with event-triggered transmission mechanism is constructed. It is followed by stability analysis of WSNCS to obtain the asymptotical stability condition of systems. And then a search algorithm is presented for transmission rate and control codesign. Finally, numerical examples are given to illustrate the effectiveness of the proposed method.