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Proceedings Paper

Accelerometer-based online reconstruction of fast telescope vibrations from delayed measurements
Author(s): Alexander Keck; Jörg-Uwe Pott; Oliver Sawodny
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Paper Abstract

A feedforward vibration cancellation system can be used to compensate for fast wind-induced telescope vibrations. Crucial is the position reconstructors ability to provide the compensation mirror with an accurate online estimate of the vibrational displacement. The authors have developed and presented a position reconstructor based on adaptive resonators. However, network data transmission of the acceleration signals introduces a time delay into the measurement chain. Any feedforward compensation setup can only function well if a delay-free estimate of the disturbance signal is provided. Three delay-compensating extensions of the developed position reconstructor are presented and analyzed.

Paper Details

Date Published: 27 July 2016
PDF: 11 pages
Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 990630 (27 July 2016); doi: 10.1117/12.2231667
Show Author Affiliations
Alexander Keck, Univ. Stuttgart (Germany)
Max-Planck-Institut für Astronomie (Germany)
Jörg-Uwe Pott, Max-Planck-Institut für Astronomie (Germany)
Oliver Sawodny, Univ. Stuttgart (Germany)


Published in SPIE Proceedings Vol. 9906:
Ground-based and Airborne Telescopes VI
Helen J. Hall; Roberto Gilmozzi; Heather K. Marshall, Editor(s)

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