Title: Fault Tolerant Control of Networked Control Systems: time-delay switched system approach

Authors: Dongmei Xie

Addresses: Department of Mathematics, School of Sciences, Tianjin University, Tianjin 300072, PR China

Abstract: This paper studies the Fault Tolerant Control (FTC) of Networked Control Systems (NCSs) with network-induced delay, packet dropout and actuator faults using time-delay switched system approach. First, modelling such NCS as a discrete-time switched system with control input time-delay, the FTC of such NCS can be reduced to that of switched systems with control input-delay. Then, we can apply the rich theory of time-delay switched system to study NCS. Sufficient conditions for the stabilisation of such NCS are presented. Stabilising switched output feedback controllers can be designed by solving a set of Linear Matrix Inequalities (LMIs), which can be easily tested with efficient LMI algorithms. Finally, an example is given to illustrate our results.

Keywords: NCS; networked control systems; discrete-time switched systems; actuator faults; input time delay; switched output feedback; LMI; linear matrix inequality; fault tolerant control.

DOI: 10.1504/IJSCC.2009.024563

International Journal of Systems, Control and Communications, 2009 Vol.1 No.3, pp.375 - 387

Published online: 09 Apr 2009 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article