Optimal modified tracking performance for MIMO networked control systems with communication constraints

Jie Wu; Zhu-Jun Zhou; Xi-Sheng Zhan; Huai-Cheng Yan; Ming-Feng Ge

doi:10.1016/j.isatra.2017.01.028

Optimal modified tracking performance for MIMO networked control systems with communication constraints

ISA Trans. 2017 May:68:14-21. doi: 10.1016/j.isatra.2017.01.028. Epub 2017 Feb 16.

Authors

Jie Wu¹, Zhu-Jun Zhou¹, Xi-Sheng Zhan², Huai-Cheng Yan³, Ming-Feng Ge⁴

Affiliations

¹ College of Mechatronics and Control Engineering, Hubei Normal University, Huangshi 435002, China.
² College of Mechatronics and Control Engineering, Hubei Normal University, Huangshi 435002, China. Electronic address: xisheng519@126.com.
³ Key Laboratory of Advanced Control and Optimization for Chemical Processes of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China.
⁴ School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China.

PMID: 28216234
DOI: 10.1016/j.isatra.2017.01.028

Abstract

This paper investigates the optimal modified tracking performance of multi-input multi-output (MIMO) networked control systems (NCSs) with packet dropouts and bandwidth constraints. Some explicit expressions are obtained by using co-prime factorization and the spectral decomposition technique. The obtained results show that the optimal modified tracking performance is related to the intrinsic properties of a given plant such as non-minimum phase (NMP) zeros, unstable poles, and their directions. Furthermore, the modified factor, packet dropouts probability and bandwidth also impact the optimal modified tracking performance of the NCSs. The optimal modified tracking performance with channel input power constraint is obtained by searching through all stabilizing two-parameter compensator. Finally, some typical examples are given to illustrate the effectiveness of the theoretical results.

Keywords: Bandwidth; Modified factor; NMP zeros; Networked control systems; Packet dropouts; Unstable poles.