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Proceedings Paper

High-precision scanner control system using online learning
Author(s): K. Aoki; Y. Yanagita; T. Kurii
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Paper Abstract

We have developed a high-precision scanner control system, which is used on earth observation satellites. This control system keeps high angular precision with ultra smooth rotation. We designed a feedback controller consists of a rate loop for rotation-speed control and a position loop for angular control. Adding a feedforward controller using cyclic memory, 1st order rotational synchronizing disturbance caused by eccentric load has been compressed over 50 dB. An online learning controller sustains long-time robustness by suppressing undesired addition to a cyclic memory. The proposed control system maintains high pointing accuracy with a standard deviation of 0.003 degree at 80 rpm.

Paper Details

Date Published: 13 May 2011
PDF: 11 pages
Proc. SPIE 8052, Acquisition, Tracking, Pointing, and Laser Systems Technologies XXV, 80520V (13 May 2011); doi: 10.1117/12.884454
Show Author Affiliations
K. Aoki, NEC Corp. (Japan)
Y. Yanagita, NEC Corp. (Japan)
T. Kurii, NEC TOSHIBA Space Systems (Japan)

Published in SPIE Proceedings Vol. 8052:
Acquisition, Tracking, Pointing, and Laser Systems Technologies XXV
William E. Thompson; Paul F. McManamon, Editor(s)

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