Latest Research Reported in IEEE TAC

08 Feb 2017

Our paper on “A Sliding Mode Observer for Infinitely Unobservable Descriptor Systems” is now published in the IEEE Transactions on Automatic Control.

Abstract: 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.

The paper can be downloaded here.