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Feedback stabilization of a class of distributed systems and construction of a state estimator

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2 Author(s)
Sakawa, Y. ; Osaka University, Osaka, Japan ; Matsushita, T.

In this paper, we study feedback stabilization of a class of distributed systems governed by partial differential equations of parabolic type and its application to constructing a state estimator for asymptotic state identification. It is proved that, when a controller (an observation) can be arbitrarily constructed, observability (controllability) of the system is necessary and sufficient for stabilizing the system so that it has an arbitrarily large damping constant. As an application of this result, it is shown that a state estimator can be constructed, the output of which approaches asymptotically the real state of the system with an arbitrary convergence rate.

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Automatic Control, IEEE Transactions on  (Volume:20 ,  Issue: 6 )