Vibrations in MagAO: Resonance sources identification and first approaches for modeling and control

Javier Garcés, Sebastián Zúñiga, Laird Close, Jared Males, Katie Morzinski, Pedro Escárate, Mario Castro, José Marchioni, Diego Rojas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

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.

Original languageEnglish (US)
Title of host publicationAdaptive Optics Systems V
EditorsEnrico Marchetti, Jean-Pierre Veran, Laird M. Close
PublisherSPIE
ISBN (Electronic)9781510601970
DOIs
StatePublished - Jan 1 2016
EventAdaptive Optics Systems V - Edinburgh, United Kingdom
Duration: Jun 26 2016Jul 1 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9909
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherAdaptive Optics Systems V
CountryUnited Kingdom
CityEdinburgh
Period6/26/167/1/16

Keywords

  • Adaptive optics
  • Control
  • MagAO
  • Modeling
  • Vibrations

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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    Garcés, J., Zúñiga, S., Close, L., Males, J., Morzinski, K., Escárate, P., Castro, M., Marchioni, J., & Rojas, D. (2016). Vibrations in MagAO: Resonance sources identification and first approaches for modeling and control. In E. Marchetti, J-P. Veran, & L. M. Close (Eds.), Adaptive Optics Systems V [99093G] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9909). SPIE. https://doi.org/10.1117/12.2232777