Vibrations in MagAO: resonance sources identification and first approaches for modeling and control
Author
Garcés, JavierZúñiga, Sebastián
Close, Laird
Males, Jared
Morzinski, Katie
Escárate, Pedro
Castro, Mario
Marchioni, José
Rojas, Diego
Affiliation
Univ Arizona, Steward ObservIssue Date
2016-07-27
Metadata
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SPIE-INT SOC OPTICAL ENGINEERINGCitation
Javier Garcés ; Sebastián Zúñiga ; Laird Close ; Jared Males ; Katie Morzinski ; Pedro Escárate ; Mario Castro ; José Marchioni and Diego Rojas " Vibrations in MagAO: resonance sources identification and first approaches for modeling and control ", Proc. SPIE 9909, Adaptive Optics Systems V, 99093G (July 27, 2016); doi:10.1117/12.2232777; http://dx.doi.org/10.1117/12.2232777Journal
ADAPTIVE OPTICS SYSTEMS VRights
© 2016 SPIE.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.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.ISSN
0277-786XVersion
Final published versionae974a485f413a2113503eed53cd6c53
10.1117/12.2232777