Analysis of the static deformation matching between numerical and experimental data on the voice-coil actuated deformable mirrors

Ciro Del Vecchio; Runa Briguglio; Armando Riccardi; Marco Xompero

doi:10.1117/12.2055980

7 August 2014 Analysis of the static deformation matching between numerical and experimental data on the voice-coil actuated deformable mirrors

Ciro Del Vecchio, Runa Briguglio, Armando Riccardi, Marco Xompero

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Proceedings Volume 9148, Adaptive Optics Systems IV; 914840 (2014) https://doi.org/10.1117/12.2055980
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

As any other modelling of a physical behavior, the numerical simulation of the mechanical response of an adaptive secondary mirror requires that the results match the experimental data. Such an agreement was recently demonstrated for the local mirror stiffness of the LBT and VLT Deformable Mirrors. A reliable modeling is a good tool for the extrapolation of the missing optical data (spider shadowing, edge vignetting, etc.) and a final goal method for simplifying, or even substituting, the complex optical measuring equipment required by the convex shells. In the present paper we compare the whole mirror deformation maps when a single actuator is poked, both in the optical data and in the numerical model. The limiting factors as well as a roadmap for future improvements will be identified.

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Ciro Del Vecchio, Runa Briguglio, Armando Riccardi, and Marco Xompero "Analysis of the static deformation matching between numerical and experimental data on the voice-coil actuated deformable mirrors", Proc. SPIE 9148, Adaptive Optics Systems IV, 914840 (7 August 2014); https://doi.org/10.1117/12.2055980

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KEYWORDS

Actuators

Data modeling

Mirrors

Finite element methods

Deformable mirrors

Adaptive optics

Interferometers

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