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Proceedings Paper

Experiments with adaptive nonlinear control systems for atmospheric correction
Author(s): Sol W. Gully; James Huang; Nikolaos Denis; Douglas P. Looze; Allan Wirth; Andrew J. Jankevics; David A. Castanon
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Paper Abstract

In this paper we characterize and illustrate Adaptive Optics Control system errors associated with sensor misregistration and present an approach to minimize them by employing nonlinear adaptive control methodologies. Furthermore, through the use of the Extended Kalman Filter methods, we determine if it is feasible that experimental data can be used to drive a complete multi-input multi-output dynamic model of the closed-loop adaptive optics system to estimate parameters directly related to stability margins. Finally, we review some results from an experimental verification of these theories. A closed loop adaptive optics breadboard is used to compare the observed effects of misregistration and other systematic error sources with the predictions of the models described above.

Paper Details

Date Published: 31 May 1994
PDF: 15 pages
Proc. SPIE 2201, Adaptive Optics in Astronomy, (31 May 1994); doi: 10.1117/12.176126
Show Author Affiliations
Sol W. Gully, Alphatech, Inc. (United States)
James Huang, Alphatech, Inc. (United States)
Nikolaos Denis, Univ. of Massachusetts (United States)
Douglas P. Looze, Univ. of Massachusetts (United States)
Allan Wirth, United Technologies/Adaptive Optics Associates (United States)
Andrew J. Jankevics, United Technologies/Adaptive Optics Associates (United States)
David A. Castanon, Boston Univ. (United States)

Published in SPIE Proceedings Vol. 2201:
Adaptive Optics in Astronomy
Mark A. Ealey; Fritz Merkle, Editor(s)

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