Table of Contents Author Guidelines Submit a Manuscript
Mathematical Problems in Engineering
Volume 2013, Article ID 852502, 9 pages
http://dx.doi.org/10.1155/2013/852502
Research Article

Robust Adaptive Switching Fault-Tolerant Control of a Class of Uncertain Systems against Actuator Faults

The Key Laboratory of Manufacturing Industrial Integrated Automation, Shenyang University, Shenyang Liaoning 110044, China

Received 18 August 2013; Accepted 16 October 2013

Academic Editor: Bo-Chao Zheng

Copyright © 2013 Xiao-Zheng Jin. 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.

Abstract

This paper deals with the fault-tolerant control (FTC) problem for a class of linear time-invariant systems with time-varying actuator faults and uncertainties. For more general consideration, the faults and uncertainties are supposed to depend on the states of systems and unknown constant bounds. For the sake of eliminating the effects of such state-dependent faults and uncertainties automatically, a switching control strategy which is formulated by a sign function is designed to configure controller based on system’s states. And some adjustable control parameters are updated via designing adaptive laws. Based on the information from switching function and the adaptive estimation mechanism, the robust adaptive controllers are constructed to compensate for the effects of faults and uncertainties. Through Lyapunov functions and adaptive schemes, the asymptotic stability of the resulting adaptive FTC uncertain system can be achieved. The effectiveness of the proposed design is illustrated via a rocket fairing structural-acoustic model.