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Optical Engineering

Adaptive feedback control of optical jitter using Q-parameterization
Author(s): Mark A. McEver; Daniel G. Cole; Robert L. Clark
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Paper Abstract

Vibration-induced jitter degrades the pointing and imaging performance of precision optical systems. Practical active jitter reduction is achieved by maintaining beam alignment with mirror-positioning control systems. In the presence of time-varying or uncertain disturbances, jitter control systems using fixed-gain feedback control loops cannot operate without significant limitations on their performance. A feedback control technique called Q-parameterization can adapt to time-varying disturbances by adjusting its parameters in real time to maintain optimal performance. Adaptive feedback jitter control using Q-parameterization is experimentally verified on an optical testbed, increasing jitter reduction compared to an H2-optimal fixed-gain controller.

Paper Details

Date Published: 1 April 2004
PDF: 7 pages
Opt. Eng. 43(4) doi: 10.1117/1.1666596
Published in: Optical Engineering Volume 43, Issue 4
Show Author Affiliations
Mark A. McEver, Duke Univ. (United States)
Daniel G. Cole, Duke Univ. (United States)
Robert L. Clark, Duke Univ. (United States)

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