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Proceedings Paper

E-ELT primary mirror control system
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Paper Abstract

During the past year the control of the 42m segmented primary mirror of the E-ELT has been studied. This paper presents the progress in the areas of M1 figure control and control hardware implementation. The critical issue of coupling through the supporting structure has been considered in the controller design. Different control strategies have been investigated and from a tradeoff analysis modal control is proposed as a solution addressing the topics of wind rejection as well as sensor noise in the presence of cross-coupling through the supporting structure. Various implementations of the M1 Control System have been studied and a centralized architecture has been selected as baseline. This approach offers maximum flexibility for further iterations. The controller design and main parts of the control system are described.

Paper Details

Date Published: 17 July 2008
PDF: 11 pages
Proc. SPIE 7012, Ground-based and Airborne Telescopes II, 70121O (17 July 2008); doi: 10.1117/12.790476
Show Author Affiliations
M. Dimmler, European Southern Observatory (Germany)
T. Erm, European Southern Observatory (Germany)
B. Bauvir, European Southern Observatory (Germany)
B. Sedghi, European Southern Observatory (Germany)
H. Bonnet, European Southern Observatory (Germany)
M. Müller, European Southern Observatory (Germany)
A. Wallander, European Southern Observatory (Germany)

Published in SPIE Proceedings Vol. 7012:
Ground-based and Airborne Telescopes II
Larry M. Stepp; Roberto Gilmozzi, Editor(s)

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