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Proceedings Paper

Application of distributed control techniques to the adaptive secondary mirror of Cornell's Large Atacama Telescope
Author(s): Jayant Kulkarni; Raffaello D'Andrea; Bernhard Brandl
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Paper Abstract

In this paper we apply, recently developed, distributed control techniques to the control of an adaptive secondary mirror. The control technique implemented uses the l2 induced norm as a performance criterion. A finite difference model for the mirror is developed using shift operators. We determine the necessary constants from the physical properties of the mirror, from the typical dimensions of such a system, and from our performance requirements for operating the telescope in the near infrared region.The closed loop system is simulated by modelling the deformable mirror in Abaqus, a commercial finite element software, and by implementing the controller in Matlab.

Paper Details

Date Published: 7 February 2003
PDF: 7 pages
Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); doi: 10.1117/12.459043
Show Author Affiliations
Jayant Kulkarni, Cornell Univ. (United States)
Raffaello D'Andrea, Cornell Univ. (United States)
Bernhard Brandl, Cornell Univ. (United States)

Published in SPIE Proceedings Vol. 4839:
Adaptive Optical System Technologies II
Peter L. Wizinowich; Domenico Bonaccini, Editor(s)

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