Title
Adaptive observer design for wave PDEs with nonlinear dynamics and parameter uncertainty
Abstract
We consider the problem of state observer design for wave PDEs containing Lipschitz nonlinearities in the domain and parameter uncertainties in the domain and at the boundaries. Using the decoupling-transformation design approach, we develop an adaptive boundary observer consisting of a state observer, a least-squares type parameter adaptive law, and a hyperbolic auxiliary filter. Using Lyapunov stability analysis, we show that the observer is exponentially convergent under a persistent excitation condition. The novelty is twofold: (i) the class of systems is much wider than those studied in previous works, it particularly accounts for structured disturbances acting on the domain and all boundaries; (ii) the proposed adaptive observer is quite different from existing ones for wave-type PDEs.
Year
DOI
Venue
2021
10.1016/j.automatica.2020.109295
Automatica
DocType
Volume
Issue
Journal
123
1
ISSN
Citations 
PageRank 
0005-1098
1
0.35
References 
Authors
0
6
Name
Order
Citations
PageRank
Abdeljalil Benabdelhadi110.35
F. Giri211029.41
Tarek Ahmed-Ali324526.90
Miroslav Krstic44987553.84
H. El Fadil∗534.44
Fatima-Zahra Chaoui6206.91