Integrated modeling of the Euro50

Torben E. Andersen; Michael T. Browne; Anita Enmark; Dan Moraru; Mette Owner-Petersen; Holger Riewaldt

doi:10.1117/12.566232

7 July 2004 Integrated modeling of the Euro50

Torben E. Andersen, Michael T. Browne, Anita Enmark, Dan Moraru, Mette Owner-Petersen, Holger Riewaldt

Proceedings Volume 5382, Second Backaskog Workshop on Extremely Large Telescopes; (2004) https://doi.org/10.1117/12.566232
Event: Second Backaskog Workshop on Extremely Large Telescopes, 2003, Backaskog, Sweden

Abstract

The Euro50 is a proposed 50 m optical and infrared telescope. It will have thousands of control loops to keep the optics aligned under influence of wind, gravity and thermal loads. Cross-disciplinary integrated modeling is used to study the overall performance of the Euro50. A sub-model of the mechanical structure originates from finite element modeling. The optical performance is determined using ray tracing, both non-linear and linearized. The primary mirror segment alignment control system is modeled with the 618 segments taken as rigid bodies. Adaptive optics is included using a layered model of the atmosphere and sub-models of the wavefront sensor, reconstructor and controller. The deformable mirror is, so far, described by a simple influence function and a second order dynamical transfer function but more detailed work is in progress. The model has been implemented using Matlab/Simulink on individual computers but it will shortly be implemented on a Beowulf cluster within a trusted network. Communication routines between Matlab on the cluster processors have been written and are being benchmarked. Representative results from the simulations are shown.

Citation Download Citation

Torben E. Andersen, Michael T. Browne, Anita Enmark, Dan Moraru, Mette Owner-Petersen, and Holger Riewaldt "Integrated modeling of the Euro50", Proc. SPIE 5382, Second Backaskog Workshop on Extremely Large Telescopes, (7 July 2004); https://doi.org/10.1117/12.566232

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