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Abstract and Applied Analysis
Volume 2014, Article ID 450521, 11 pages
Research Article

Robust Adaptive Fault-Tolerant Control of Stochastic Systems with Modeling Uncertainties and Actuator Failures

1School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
2School of Automation, Chongqing University, Chongqing 400044, China

Received 2 January 2014; Revised 27 January 2014; Accepted 30 January 2014; Published 13 March 2014

Copyright © 2014 Wenchuan Cai et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper deals with the problem of fault-tolerant control (FTC) of uncertain stochastic systems subject to modeling uncertainties and actuator failures. A robust adaptive fault-tolerant controller design method based on stochastic Lyapunov theory is developed to accommodate the negative impact on system performance arising from uncertain system parameters and external disturbances as well as actuation faults. There is no need for on-line fault detection and diagnosis (FDD) unit in the proposed FTC scheme, which not only simplifies the design process but also makes the implementation inexpensive. Numerical examples are provided to validate and illustrate the benefits of the proposed control method.