American Journal of Applied Sciences

Fault Reconstruction Using Sliding Mode Observers

K. Hakiki, B. Mazari, A. Liazid and S. Djaber

DOI : 10.3844/ajassp.2006.1669.1674

American Journal of Applied Sciences

Volume 3, Issue 1

Pages 1669-1674


In this study, a nonlinear sliding observer is proposed to explicitly reconstruct fault signals. The novelty lies in the application of the equivalent output injection concept. Previous work in the area of fault detection has used disruption of the sliding motion to detect faults. The aim of the present study was to design a robust observer that slides in the presence of faults based on the response of the estimated outputs of the system. A numerical example of the application to an inverted pendulum mounted on a cart is provided to demonstrate the approach.


© 2006 K. Hakiki, B. Mazari, A. Liazid and S. Djaber. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.