Robust fault-tolerant control for uncertain networked control systems with state-delay and random data packet dropout

Authors:
Xiaomei Qi;Chengjin Zhang;Jason Gu
Affiliations:
School of Control Science and Engineering, Shandong University, Jinan, China;School of Control Science and Engineering, Shandong University, Jinan, China;Department of Electrical and Computer Engineering, Dalhousie University, Halifax, NS, Canada
Venue:
Journal of Control Science and Engineering - Special issue on Advances in Methods for Control over Networks
Year:
2012

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Abstract

A robust fault-tolerant controller design problem for networked control system (NCS) with random packet dropout in both sensor-to-controller link and controller-to-actuator link is investigated. A novel stochastic NCS model with state-delay, model uncertainty, disturbance, probabilistic sensor failure, and actuator failure is proposed. The random packet dropout, sensor failures, and actuator failures are characterized by a binary random variable. The sufficient condition for asymptotical mean-square stability of NCS is derived and the closed-loop NCS satisfies H∞ performance constraints caused by the random packet dropout and disturbance. The fault-tolerant controller is designed by solving a linear matrix inequality. A numerical example is presented to illustrate the effectiveness of the proposed method.