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Output Feedback Stabilization of Networked Control Systems With Random Delays Modeled by Markov Chains

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2 Author(s)
Yang Shi ; Dept. of Mech. Eng., Univ. of Saskatchewan, Saskatoon, SK, Canada ; Bo Yu

This note investigates the output feedback stabilization of networked control systems (NCSs). The sensor-to-controller (S-C) and controller-to-actuator (C-A) random network-induced delays are modeled as Markov chains. The focus is on the design of a two-mode-dependent controller that depends on not only the current S-C delay but also the most recent available C-A delay at the controller node. The resulting closed-loop system is transformed to a special discrete-time jump linear system. Then, the sufficient and necessary conditions for the stochastic stability are established. Further, the output feedback controller is designed via the iterative linear matrix inequality (LMI) approach. Simulation examples illustrate the effectiveness of the proposed method.

Published in:

Automatic Control, IEEE Transactions on  (Volume:54 ,  Issue: 7 )

Date of Publication:

July 2009

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