On the model-based approach to nonlinear networked control systems |
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Authors: | Ilia G Polushin [Author Vitae] Peter X Liu [Author Vitae] [Author Vitae] |
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Affiliation: | Department of Systems and Computer Engineering, Carleton University, 1125 Colonel By Dr., Ottawa, ON, K1S 5B6, Canada |
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Abstract: | The problem of model-based stabilization of a nonlinear system based on its approximate discrete-time model is addressed, under the assumption that both the feedforward and the feedback paths are subject to network-induced constraints. These constraints include irregularity of the transfer intervals, time-varying communication delays, and the possibility of packet losses. A communication protocol that copes with these constraints is proposed. A “Stability+performance recovery” result for the nonlinear model-based networked control system (NCS) is formulated and proven.Simulation results presented confirm that the proposed method improves the maximum allowable transfer interval. |
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Keywords: | Networked control systems Model-based control Nonlinear control systems Sampled-data systems |
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