Mathematical Problems in Engineering
Volume 2004 (2004), Issue 1, Pages 11-31
doi:10.1155/S1024123X04309038
Sliding mode observers and observability singularity in chaotic synchronization
1Equipe Commande des Systèmes, École Nationale Supérieure de l'Electronique et de ses Applications, 6 avenue du Ponceau, Cergy Cedex 95014, France
2Laboratoire Vision et Robotique, École Nationale Supérieure d'Ingenieurs de Bourges et Université d'Orléans, 10 Boulevard Lahitolle, Bourges Cedex 18020, France
Received 29 September 2003; Revised 28 January 2004
Copyright © 2004 L. Boutat-Baddas 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.
Abstract
We present a new secured data transmission based on a chaotic
synchronization and observability singularity. For this, we adopt
an approach based on an inclusion of the message in
the system structure and we use a sliding mode observer for system
with unknown input in order to recover the information. We end the
paper with an example of chaotic system with an observability
bifurcation. Moreover, this example highlights some benefits of the so-called step-by-step sliding mode observer.