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Título del libro: Proceedings Of The Ieee Conference On Decision And Control
Título del capítulo: A Second-Order Observer Based on Dissipativity and Homogeneity Properties for Uncertain Nonlinear Systems

Autores UNAM:
OSCAR TEXIS LOAIZA; JOSE ANGEL MERCADO URIBE; JAIME ALBERTO MORENO PEREZ;
Autores externos:

Idioma:

Año de publicación:
2025
Palabras clave:

Dissipativity properties; Finite-time; Homogeneity properties; Homogeneous observers; Input nonlinearities; Non-Lipschitz nonlinearities; Observer-based; Second orders; Uncertain nonlinear systems; Unknown inputs


Resumen:

© 2025 IEEE.In this paper, we propose a global second-order dissipative homogeneous observer (DH-observer) that can estimate the states of an uncertain nonlinear system with unknown inputs in finite time. The system must be strongly observable with respect to unknown inputs (UIs), uniformly in the known input. To handle the UIs and non-Lipschitz nonlinearities, the proposed observer combines dissipative and homogeneous properties. The convergence of the DH-observer to the system states is proven through a Lyapunov function. Finally, to showcase the effectiveness of the proposed method, the paper includes an academic example.


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