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Observer-Based Fault Estimation for Discrete-Time Nonlinear Systems and Its Application: A Weighted Switching Approach.
- Source :
-
IEEE Transactions on Circuits & Systems. Part I: Regular Papers . Nov2019, Vol. 66 Issue 11, p4377-4387. 11p. - Publication Year :
- 2019
-
Abstract
- This paper deals with the problem of observer-based fault estimation (FE) for discrete-time nonlinear systems via a weighted switching approach. A pair of variable weights is introduced in an efficient but straight-forward way, and thus, the space spanned by the prescribed normalized fuzzy weighting function can be divided into a set of non-overlapping subspaces. A new fuzzy switching FE observer is proposed by designing exclusive FE observer gain matrices for each non-overlapping subspaces, and thus, less conservative off-line designed conditions for the proposed fuzzy switching FE observer are obtained than the previous results by adequately taking advantage of the characteristic information of each non-overlapping subspaces. More importantly, the process of on-line deciding the current subspace’s index at each sampled point is very straightway and some previous time-consuming online operation is avoided, i.e., it can be said that the on-line computational burden also is alleviated in this paper. Finally, the proposed theoretical result is applied to a tunnel diode circuit and the advantages over existing literature are validated by means of objective comparisons. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15498328
- Volume :
- 66
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part I: Regular Papers
- Publication Type :
- Periodical
- Accession number :
- 139409270
- Full Text :
- https://doi.org/10.1109/TCSI.2019.2920967