期刊
ISA TRANSACTIONS
卷 84, 期 -, 页码 111-117出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.isatra.2018.09.018
关键词
Encoding-decoding; NCSs; NMP zeros; Packet dropouts; Quantization; Unstable poles
资金
- National Natural Science Foundation of China [61602163, 61471163, 61673178]
- Science Fund for Distinguished Young Scholars of Hubei Province, China [2017CFA034]
- Youth Technology Innovation Team of Hubei Province, China [T201710]
- Hubei Education Department Science and Technology Research Program for Young Talents, China [Q20182503]
The optimal modified performance of the multi-input multi-output (MIMO) networked control systems (NCSs) with encoding-decoding, channel noise in the forward channel and packet dropouts, quantization in the feedback channel is investigated in this paper. A new and efficient tracking performance index for the NCSs is presented which prevents variations in the tracking error where there is no integrator in the plant. The optimal modified performance is obtained by the method of coprime factorization and partial fraction. The results demonstrate that the optimal modified performance is related to the locations of the non-minimum phase (NMP) zeros, unstable poles of the given plant as well as their directions. In addition, the modified factor, packet dropouts probability, channel noise and encoding-decoding are also closely related to optimal modified performance of the NCSs. Finally, we present some particular examples to illustrate the theoretical results. (C) 2018 ISA. Published by Elsevier Ltd. All rights reserved.
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