Regular Papers

International Journal of Control, Automation, and Systems 2024; 22(2): 387-395

https://doi.org/10.1007/s12555-022-0537-2

© The International Journal of Control, Automation, and Systems

Optimal Regulation Performance of MIMO Networked Time-delay Systems With Limited Bandwidth and Interference Signals

Qianhao Li, Qingsheng Yang, Xisheng Zhan*, and Jie Wu

Hubei Normal University

Abstract

In this paper, we investigate the optimal regulation performance of networked time delay systems with limited bandwidth and interference signals. Communication networks are primarily influenced by parameters including bandwidth, packet dropouts, coding and decoding, interference signals, and channel noise. For a given system, non-minimum phase zeros, unstable poles, and time delay are considered. The corresponding regulation performance expressions are derived using coprime decomposition, spectral decomposition techniques, and norm correlation theory in the frequency domain. Results indicate that regulation performance is dependent on the location and direction of non-minimum phase zeros and unstable poles of a given system, as well as the internal time delay of the controlled plant. In addition, network communication parameters such as bandwidth, channel noise, packet dropouts, and external interference signals influence the performance of the regulation. Finally, simulation examples are provided to demonstrate the theory’s validity.

Keywords Bandwidth limitation, incomplete information, interference signal, packet dropouts, regulation performance, time-delay system.

Article

Regular Papers

International Journal of Control, Automation, and Systems 2024; 22(2): 387-395

Published online February 1, 2024 https://doi.org/10.1007/s12555-022-0537-2

Copyright © The International Journal of Control, Automation, and Systems.

Optimal Regulation Performance of MIMO Networked Time-delay Systems With Limited Bandwidth and Interference Signals

Qianhao Li, Qingsheng Yang, Xisheng Zhan*, and Jie Wu

Hubei Normal University

Abstract

In this paper, we investigate the optimal regulation performance of networked time delay systems with limited bandwidth and interference signals. Communication networks are primarily influenced by parameters including bandwidth, packet dropouts, coding and decoding, interference signals, and channel noise. For a given system, non-minimum phase zeros, unstable poles, and time delay are considered. The corresponding regulation performance expressions are derived using coprime decomposition, spectral decomposition techniques, and norm correlation theory in the frequency domain. Results indicate that regulation performance is dependent on the location and direction of non-minimum phase zeros and unstable poles of a given system, as well as the internal time delay of the controlled plant. In addition, network communication parameters such as bandwidth, channel noise, packet dropouts, and external interference signals influence the performance of the regulation. Finally, simulation examples are provided to demonstrate the theory’s validity.

Keywords: Bandwidth limitation, incomplete information, interference signal, packet dropouts, regulation performance, time-delay system.

IJCAS
February 2024

Vol. 22, No. 2, pp. 347~729

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