Mathematics – Optimization and Control
Scientific paper
2005-09-28
Mathematics
Optimization and Control
7 pages, 3 figures, 28 references
Scientific paper
The relative degree limitation for adaptive observer-based synchronization schemes is overcome. The scheme is extended to nonpassifiable systems. Two synchronization methods are described and justified based on augmented error adaptive observer and high-order tuners. The solution is based on modern theory of nonlinear adaptive control, particularly on nonlinear observer structure and new classes of adaptation algorithms. Conditions of parametric convergence of the parameter estimation are established for the noiseless case. Robustness of the scheme to the bounded measurement error is established. The results are illustrated by example of application the proposed adaptive synchronization of chaotic Lorenz systems.
Andrievsky B. R.
Fradkov Alexander L.
Nikiforov V. O.
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