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A Sliding Mode Observer for Infinitely Unobservable Descriptor Systems

Ooi, Jeremy Hor Teong, Tan, Chee Pin, Nurzaman, Surya Girinatha and Ng, Kok Yew (2017) A Sliding Mode Observer for Infinitely Unobservable Descriptor Systems. IEEE Transactions on Automatic Control, 62 (7). pp. 3580-3587. [Journal article]

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URL: http://dx.doi.org/10.1109/TAC.2017.2665699

DOI: 10.1109/TAC.2017.2665699


In existing work of sliding mode observers (SMOs) for descriptor systems, a necessary condition is that the system must be infinitely observable. This paper presents a scheme that circumvents that condition, by reformulating the system as a reduced-order system where certain structures in the system matrix are manipulated and certain states are treated as unknown inputs. Following that, an SMO is implemented on the reduced-order system where state and fault estimation can be achieved. Necessary and sufficient conditions of this scheme are also presented. Finally, a simulation example shows the effectiveness of the proposed scheme.

Item Type:Journal article
Keywords:Estimation, fault detection, linear systems, sliding mode observers (SMOs)
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
ID Code:38272
Deposited By: Dr Mark Kok Ng
Deposited On:10 Apr 2018 13:12
Last Modified:10 Apr 2018 13:12

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