Design of reduced-order state/unknown input observers: a descriptor system approach
Fernando, T. and Trinh, Hieu 2006, Design of reduced-order state/unknown input observers: a descriptor system approach, in Proceedings of the 2006 IEEE International Conference on Control Applications, IEEE Xplore, Piscataway, N.J., pp. 1759-1763.
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Proceedings of the 2006 IEEE International Conference on Control Applications
International Symposium on Intelligent Control
Place of publication
This paper addresses the problem of estimating simultaneously a linear function of both the state and unknown input of linear system with unknown inputs. By adopting the descriptor system approach, the problem can be conveniently solved. Observers proposed in this paper are of low-order and do not include the derivatives of the outputs. New conditions for the existence of reduced-order observers are derived. A design procedure for the determination of the observer parameters can also be easily derived based on the derived existence conditions
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