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Proceedings Paper

Vibrations in MagAO: resonance sources identification and first approaches for modeling and control
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Paper Abstract

The Magellan Telescope Adaptive Optics System (MagAO) is subject to resonance effects induced by elements within the system instrumentation, such as fans and cooling pumps. Normalized PSDs are obtained through frequency-based analysis of closed-loop on-sky data, detecting and measuring vibration effects. Subsequently, a space-state model for the AO loop is obtained, using a standard AO loop scheme with an integrator-based controller and including the vibration effects as disturbances. Finally, a new control alternative is proposed, focusing on residual phase variance minimization through the design and simulation of an optimal LQG control approach.

Paper Details

Date Published: 27 July 2016
PDF: 17 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 99093G (27 July 2016); doi: 10.1117/12.2232777
Show Author Affiliations
Javier Garcés, Univ. Técnica Federico Santa María (Chile)
Sebastián Zúñiga, Univ. Técnica Federico Santa María (Chile)
Laird Close, Univ. of Arizona (United States)
Jared Males, Univ. of Arizona (United States)
Katie Morzinski, Univ. of Arizona (United States)
Pedro Escárate, Univ. Técnica Federico Santa María (Chile)
Mario Castro, Univ. Técnica Federico Santa María (Chile)
José Marchioni, Univ. Técnica Federico Santa María (Chile)
Diego Rojas, Univ. Técnica Federico Santa María (Chile)

Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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