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Proceedings Paper

The woofer-tweeter experiment
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Paper Abstract

The Woofer-Tweeter experiment started in the Adaptive Optics Laboratory of the University of Victoria in February 2005 has recently achieved completion. The goal of this experiment is to validate the woofer-tweeter AO concept i.e. instead to have a single deformable mirror conjugated at the ground, two DMs conjugated at the ground are used to achieve both the necessary stroke and actuators density required for a single DM for an ELT. Recently, the loop has been closed on the turbulence with a loop rate of 100Hz. Two closed-loop controllers have been tested so far: a global integrator and a tweeter off-loading integrator. This paper describes the UVic Woofer-Tweeter bench layout and components and the Woofer-Tweeter simulation tool used to both model and control the experiment. A glimpse on the very first results from the closed-loop operations is also given.

Paper Details

Date Published: 28 June 2006
PDF: 10 pages
Proc. SPIE 6272, Advances in Adaptive Optics II, 62721V (28 June 2006); doi: 10.1117/12.670720
Show Author Affiliations
R. Conan, Univ. of Victoria (Canada)
P. Hampton, Univ. of Victoria (Canada)
C. Bradley, Univ. of Victoria (Canada)
O. Keskin, Univ. of Victoria (Canada)

Published in SPIE Proceedings Vol. 6272:
Advances in Adaptive Optics II
Brent L. Ellerbroek; Domenico Bonaccini Calia, Editor(s)

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