27 July 2016 Vibrations in MagAO: resonance sources identification and first approaches for modeling and control
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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.
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Javier Garcés, Javier Garcés, Sebastián Zúñiga, Sebastián Zúñiga, Laird Close, Laird Close, Jared Males, Jared Males, Katie Morzinski, Katie Morzinski, Pedro Escárate, Pedro Escárate, Mario Castro, Mario Castro, José Marchioni, José Marchioni, Diego Rojas, Diego Rojas, } "Vibrations in MagAO: resonance sources identification and first approaches for modeling and control", Proc. SPIE 9909, Adaptive Optics Systems V, 99093G (27 July 2016); doi: 10.1117/12.2232777; https://doi.org/10.1117/12.2232777
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