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

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

doi:10.1117/12.2232777

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

Garcés, Javier; Zúñiga Fernández, Sebastián Gaspar; Close, Laird et al.

2016 • In Marchetti, Enrico (Ed.) Adaptive Optics Systems V

Editorial reviewed

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https://hdl.handle.net/2268/313841

DOI
10.1117/12.2232777

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Keywords :

Adaptive optics; Control; MagAO; Modeling; Vibrations; Adaptive optics systems; Design and simulation; Modeling and control; Resonance effect; Sources identifications; Space-state modeling; Electronic, Optical and Magnetic Materials; Condensed Matter Physics; Computer Science Applications; Applied Mathematics; Electrical and Electronic Engineering

Abstract :

[en] 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.

Disciplines :

Electrical & electronics engineering
Space science, astronomy & astrophysics

Author, co-author :

Garcés, Javier; AC3E, Universidad Tecnica Federico Santa Mara, Valparaso, Chile

Zúñiga Fernández, Sebastián Gaspar ; Université de Liège - ULiège > Astrobiology ; AC3E, Universidad Tecnica Federico Santa Mara, Valparaso, Chile

Close, Laird; Steward Observatory, University of Arizona, Tucson, United States

Males, Jared; Steward Observatory, University of Arizona, Tucson, United States

Morzinski, Katie; Steward Observatory, University of Arizona, Tucson, United States

Escárate, Pedro; AC3E, Universidad Tecnica Federico Santa Mara, Valparaso, Chile

Castro, Mario; AC3E, Universidad Tecnica Federico Santa Mara, Valparaso, Chile

Marchioni, José; AC3E, Universidad Tecnica Federico Santa Mara, Valparaso, Chile

Rojas, Diego; AC3E, Universidad Tecnica Federico Santa Mara, Valparaso, Chile

Language :

English

Title :

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

Publication date :

2016

Event name :

Adaptive Optics Systems V

Event place :

Edinburgh, Gbr

Event date :

26-06-2016 => 01-07-2016

Audience :

International

Main work title :

Adaptive Optics Systems V

Editor :

Marchetti, Enrico

Publisher :

SPIE

ISBN/EAN :

978-1-5106-0197-0

Peer reviewed :

Editorial reviewed

Funders :

The Society of Photo-Optical Instrumentation Engineers (SPIE)

Available on ORBi :

since 01 March 2024

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