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| Autor(en): | Zenith E. Vivas; José J. Ferrer | Titel: | Pade's Approximation of Sampled Data Controllers |
| Erscheinungsdatum: | 01.07.1999 |
| Erschienen in: |
Preprints aus dem Institut für Mathematik 11 (Mathematik-Preprints) ISSN: 0863-0976 |
| Volltext: | pdf (urn:nbn:de:kobv:11-10053698) |
| Fachgebiet(e): | Mathematik |
| Schlagwörter (eng): | hybrid stability, inner and outer functional, lifting technique, Pade's approximating polynomials |
| Herausgeber: | Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, Institut für Mathematik |
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| Abstract (eng): | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| In this work we consider a sampled data control system consisting of a continuous time plant and a controller, which is designed as: A uniform sampler plus a discrete time controller plus a zero order hold synchronizer. So, after fixing a sampling period h>0, and in order to take into account the intersampling behaviour of the plant, we apply the lifting technique developed in Bamieh, Dahleh, Pearson: Minimization of the ${\cal L}_\infty$-Induced Norm for Sampled Data Systems. IEEE Transactions on Automatic Control, Vol. 38, No. 5, 1993, pp. 717-732. Next, we consider certain output feedback conditions to construct a biparametric input output operator for the lifted system. Finally, after considering a representation of the family of non-linear and time-varying controllers, we come to our main objective of approaching any infinite-dimensional stabilizing controller by a discrete time but finite dimensional stabilizing one, all that by exhibiting an algorithm based on the theory of Pade's approximating polynomials. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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