Automatica, Vol.44, No.9, 2409-2414, 2008
On the model-based approach to nonlinear networked control systems
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. (C) 2008 Elsevier Ltd. All rights reserved.
Keywords:networked control systems;model-based control;nonlinear control systems;sampled-data systems