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A Nonlinear Observer for Robust Fault Reconstruction in One-Sided Lipschitz and Quadratically Inner-Bounded Nonlinear Descriptor Systems

Version 3 2024-06-19, 01:17
Version 2 2024-06-06, 01:48
Version 1 2021-02-04, 14:53
journal contribution
posted on 2024-06-19, 01:17 authored by JCL Chan, TH Lee, CP Tan, Hieu TrinhHieu Trinh, JH Park
This paper introduces a nonlinear observer to reconstruct faults in a class of nonlinear descriptor systems affected by disturbances, in both the state and output equations. The fault enters the system through nonlinear functions in both its state and output equations. The original system is first transformed such that design freedom in its structure is easier to exploit, and then a nonlinear observer is designed based on the transformed system to reconstruct the fault. Linear matrix inequalities are used to determine the gains of the observer such that the effect of the disturbances on the fault reconstruction is bounded. Finally, three simulation examples are carried out to verify the effectiveness of the scheme.

History

Journal

IEEE Access

Volume

9

Pagination

22455-22469

Location

ELECTR NETWORK

ISSN

2169-3536

eISSN

2169-3536

Language

English

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2021, The Authors

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC