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Robust Fault Tolerant Control for a Class of Time-Delay Systems with Multiple Disturbances

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  • Songyin Cao
  • Jianzhong Qiao

Abstract

A robust fault tolerant control (FTC) approach is addressed for a class of nonlinear systems with time delay, actuator faults, and multiple disturbances. The first part of the multiple disturbances is supposed to be an uncertain modeled disturbance and the second one represents a norm-bounded variable. First, a composite observer is designed to estimate the uncertain modeled disturbance and actuator fault simultaneously. Then, an FTC strategy consisting of disturbance observer based control (DOBC), fault accommodation, and a mixed / controller is constructed to reconfigure the considered systems with disturbance rejection and attenuation performance. Finally, simulations for a flight control system are given to show the efficiency of the proposed approach.

Suggested Citation

  • Songyin Cao & Jianzhong Qiao, 2013. "Robust Fault Tolerant Control for a Class of Time-Delay Systems with Multiple Disturbances," Mathematical Problems in Engineering, Hindawi, vol. 2013, pages 1-8, June.
    • Handle: RePEc:hin:jnlmpe:372957
    DOI: 10.1155/2013/372957
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