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Proceedings Paper

Validation and verification of integrated model simulations of a thirty meter telescope
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Paper Abstract

The Herzberg Institute of Astrophysics has developed Integrated Modeling tools for the Thirty Meter Telescope (TMT) project. This simulation software, implemented in MATLAB, models the telescope optical system, structural dynamics, and the segmented primary mirror and secondary mirror active optical control systems. For the TMT project, the integrated model was used to assess the effect of wind loading on the telescope in terms of delivered image quality. The simulation includes a state-space model of the telescope structural dynamics derived from an ANSYS finite element model, a linear optics model derived from a ZEMAX prescription, and wind loading forces derived from PowerFLOW computational dynamics software. The overall complexity of the model necessitates rigorous validation and verification procedures to ensure that the simulation data structures properly represent the original design, and that the calculations performed by the system are reliable. In this paper we discuss the validation and verification of the model data structures, structural configuration, optical configuration, coordinate system transforms, linear optics model, Zernike calculations, and wind loading model. As a case study, we present the verification, validation, and simulation results of the Thirty Meter Telescope Reference Design.

Paper Details

Date Published: 23 August 2005
PDF: 12 pages
Proc. SPIE 5867, Optical Modeling and Performance Predictions II, 58670Q (23 August 2005); doi: 10.1117/12.618557
Show Author Affiliations
Dan Kerley, National Research Council of Canada (Canada)
Scott Roberts, National Research Council of Canada (Canada)
Jennifer Dunn, National Research Council of Canada (Canada)
Nathan Stretch, National Research Council of Canada (Canada)
Malcolm Smith, National Research Council of Canada (Canada)
Simon Sun, National Research Council of Canada (Canada)
John Pazder, National Research Council of Canada (Canada)
Joeleff Fitzsimmons, National Research Council of Canada (Canada)


Published in SPIE Proceedings Vol. 5867:
Optical Modeling and Performance Predictions II
Mark A. Kahan, Editor(s)

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