Brief paper: On the model-based approach to nonlinear networked control systems

  • Authors:

  • Ilia G. Polushin;Peter X. Liu;Chung-Horng Lung

  • Affiliations:

  • Department of Systems and Computer Engineering, Carleton University, 1125 Colonel By Dr., Ottawa, ON, K1S 5B6, Canada;Department of Systems and Computer Engineering, Carleton University, 1125 Colonel By Dr., Ottawa, ON, K1S 5B6, Canada;Department of Systems and Computer Engineering, Carleton University, 1125 Colonel By Dr., Ottawa, ON, K1S 5B6, Canada

  • Venue:
  • Automatica (Journal of IFAC)
  • Year:
  • 2008

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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.