Geodesic
Some new standpoints in the design of asymptotic functional linear observers
F. Rotella1 ; I. Zambettakis1
1 Laboratoire de Génie de Production, 65016, Tarbes CEDEX, France.
ESAIM. Proceedings, Tome 49 (2015), pp. 102-114.

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The owl of Minerva spreads its wing only with the falling of the dusk. The aim of this work is to provide some new trends in the observation for linear systems. In the general framework of designing linear functional observers for linear systems the necessary and sufficient existence conditions are well known. Whether in the O’Reilly textbook or in the recently published ones on this topic, and, roughly speaking, the design methods can be categorized in two kinds. The first one is based on the solution of a Sylvester equation and a projection of the observed linear functional. The second one, based on the recent notion of functional observability, starts from the Darouach criterion which is an Popov-Belevitch-Hautus type one. Nevertheless, the main drawback of the deduced methods is that they cannot be used for linear time-varying systems. These models are of primary importance, for instance with linearization about a trajectory. Consequently, we cope with this problem by considering a new point of view for the design of linear functional observers. We see also that Darouach observers or Cumming-Gopinath observers are particular cases of the proposed methodology. For simplicity sake we suppose the system has no unknown inputs and is not described by a distributed parameters model as well. Nevertheless, these cases can be thought as possible extensions of the presented standpoints.
DOI : 10.1051/proc/201549009

F. Rotella 1 ; I. Zambettakis 1

1 Laboratoire de Génie de Production, 65016, Tarbes CEDEX, France. 
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F. Rotella; I. Zambettakis. Some new standpoints in the design of asymptotic functional linear observers. ESAIM. Proceedings, Tome 49 (2015), pp. 102-114. doi : 10.1051/proc/201549009. http://geodesic.mathdoc.fr/articles/10.1051/proc/201549009/

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