| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 753346 | Systems & Control Letters | 2006 | 7 Pages |
Abstract
This paper concerns linear infinite-dimensional systems with unbounded observation operators. We study the invariance of admissibility for observation operators under some unbounded perturbations of the generator. We give also some relations between the ΛΛ-extensions of such observation operators with respect to the original generator and the perturbed generator. Our results are applied to functional differential linear systems.
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Physical Sciences and Engineering
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Control and Systems Engineering
Authors
Said Hadd, Abdelali Idrissi,