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A nonlinear observer for robust fault reconstruction in One-Sided Lipschitz and Quadratically Inner-Bounded nonlinear descriptor systems
journal contribution
posted on 2021-02-01, 00:00 authored by Joseph Chang Lun Chan, Tae H Lee, Chee Pin Tan, Hieu TrinhHieu Trinh, Ju H ParkThis 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.
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Journal
IEEE AccessVolume
9Pagination
22455 - 22469Publisher
IEEELocation
Piscataway, NJPublisher DOI
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eISSN
2169-3536Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2021, The AuthorsUsage metrics
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