Skip to Main content Skip to Navigation
Conference papers

Adaptive state estimation for a class of nonlinear systems: a high gain approach

Abstract : In this paper, we propose a new adaptive estimation approach for a class of uncertain nonlinear systems such that the classical restrictive observer matching condition is not verified. That is, it is assumed that the relative degree of the outputs w.r.t the uncertain parameters vector is greater or equal than two. To solve this problem, we generate auxiliary outputs and we construct a high gain observer in cascade with an adaptive observer to achieve the objective of states and uncertain parameters reconstruction. Based on a Lyapunov analysis, we establish the convergence of both estimation and adaptation errors. Theoretical results are validated via some numerical simulations for an example of a nonlinear mechanical system.
Document type :
Conference papers
Complete list of metadatas

Cited literature [13 references]  Display  Hide  Download
Contributor : Antonio Loria <>
Submitted on : Monday, March 9, 2020 - 11:34:14 AM
Last modification on : Wednesday, October 14, 2020 - 3:57:11 AM
Long-term archiving on: : Wednesday, June 10, 2020 - 2:13:33 PM


Files produced by the author(s)



Habib Dimassi, Saim Hadj Said, Antonio Loria, Faouzi Msahli. Adaptive state estimation for a class of nonlinear systems: a high gain approach. 2019 19th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA), Mar 2019, Sousse, Tunisia. pp.359-364, ⟨10.1109/STA.2019.8717203⟩. ⟨hal-02368246⟩



Record views


Files downloads