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Closed-Loop Chopping-Mirror ControllerMotion of chopping mirror controlled very precisely by feedback circuit originally developed for mirrors in orbiting infrared telescopes. Mirror position and velocity electronically sensed and commanded. New controller enables selection of different chopping frequencies, angular amplitudes, dwell times, and dwell positions. Also reduces noise and vibration by eliminating mechanical stops and reduces energy consumption in actuator.
Document ID
19910000427
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Lorell, Kenneth R. (NASA Ames Research Center, Moffett Field, CA.)
Date Acquired
August 14, 2013
Publication Date
September 1, 1991
Publication Information
Publication: NASA Tech Briefs
Volume: 15
Issue: 9
ISSN: 0145-319X
Subject Category
Electronic Systems
Report/Patent Number
ARC-11177
ISSN: 0145-319X
Report Number: ARC-11177
Accession Number
91B10427
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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