Title :
Full and reduced-order-robust adaptive observers for chaotic synchronization
Author :
Azemi, Asad ; Yaz, Edwin Engin
Author_Institution :
Electr. Eng. Dept., Penn State Delaware County Campus, Media, PA, USA
Abstract :
Full- and reduced-order adaptive observers are presented for state reconstruction of nonlinear systems with uncertainty having unknown bounds. The observers use nonlinear gains that are smoothened versions of classical sliding-mode gains and they are continuously updated to guarantee a globally stable observation error. These observers are applied to Chua´s circuit in a chaotic synchronization scheme with possible application to secure communications. A performance comparison of full- and reduced-order observers is also included
Keywords :
Chua´s circuit; chaos; mean square error methods; observers; reduced order systems; synchronisation; Chua circuit; chaotic synchronization scheme; classical sliding-mode gains; full-order adaptive observers; globally stable observation error; nonlinear gains; nonlinear systems; reduced-order adaptive observers; secure communications; state reconstruction; uncertainty; unknown bounds; Chaos; Chaotic communication; Circuits; Minimax techniques; Nonlinear dynamical systems; Nonlinear systems; Observers; Robustness; Symmetric matrices; Uncertainty;
Conference_Titel :
American Control Conference, 2001. Proceedings of the 2001
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-6495-3
DOI :
10.1109/ACC.2001.946033
