Performance limitations for networked control systems with plant uncertainty |
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Authors: | Ming Chi Xin-Ming Cheng Fu-Shun Yuan |
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Affiliation: | 1. College of Automation, Huazhong University of Science and Technology, Wuhan, P.R. China;2. Key Laboratory of Image Information Processing and Intelligent Control (Huazhong University of Science and Technology), Ministry of Education, Wuhan, P.R. China;3. School of Information Science and Engineering, Central South University, Changsha, P.R. China;4. School of Mathematics and Statistics, Anyang Normal University, Anyang, P.R. China |
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Abstract: | There has recently been significant interest in performance study for networked control systems with communication constraints. But the existing work mainly assumes that the plant has an exact model. The goal of this paper is to investigate the optimal tracking performance for networked control system in the presence of plant uncertainty. The plant under consideration is assumed to be non-minimum phase and unstable, while the two-parameter controller is employed and the integral square criterion is adopted to measure the tracking error. And we formulate the uncertainty by utilising stochastic embedding. The explicit expression of the tracking performance has been obtained. The results show that the network communication noise and the model uncertainty, as well as the unstable poles and non-minimum phase zeros, can worsen the tracking performance. |
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Keywords: | optimal tracking performance network communication noise model uncertainty two-parameter controller unstable poles non-minimum phase zeros |
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