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Proceedings Paper

Methods of hierarchical control for a segmented active mirror
Author(s): Albert Lazzarini; Gregory H. Ames; Edward K. Conklin
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Paper Abstract

The PAMELA segmented optical surface concept uses the cellular automata paradigm to build up an active surface of individually controlled elements that maintain edge-match by relying on electronically sensed nearest neighbor edge-to-edge errors. The segments are controlled in tilt directly from a wavefront sensor (e.g., of the Hartmann-Schack type) in a separate parallel loop. The approach obviates the matrix operations needed in a typical multiple-input, multiple- out (MIMO) servo control system. In this manner, the segmented optical system is extensible to arbitrary aperture diameter by gradually building up the active surface using identical elements. This paper addresses methods to improve the real-time adaptive control of such a surface using hierarchical control architectures.

Paper Details

Date Published: 1 May 1994
PDF: 12 pages
Proc. SPIE 2121, Laser Power Beaming, (1 May 1994); doi: 10.1117/12.174179
Show Author Affiliations
Albert Lazzarini, Kaman Sciences Corp. (United States)
Gregory H. Ames, Kaman Sciences Corp. (United States)
Edward K. Conklin, FORTH, Inc. (United States)

Published in SPIE Proceedings Vol. 2121:
Laser Power Beaming
Jack V. Walker; Edward E. Montgomery, Editor(s)

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