Vibrations in MagAO: resonance sources identification and first approaches for modeling and control
AffiliationUniv Arizona, Steward Observ
MetadataShow full item record
PublisherSPIE-INT SOC OPTICAL ENGINEERING
CitationJavier 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/10.1117/12.2232777
JournalADAPTIVE OPTICS SYSTEMS V
Rights© 2016 SPIE
Collection InformationThis 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 email@example.com.
AbstractThe 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.
VersionFinal published version