Physics – Optics
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992stin...9225955d&link_type=abstract
Final Report, 2 Jan. 1991 - 21 Feb. 1992 Ball Corp., Boulder, CO. Electro-Optics/Cryogenics Div.
Physics
Optics
Booms (Equipment), Control Systems Design, Electro-Optics, Flexible Bodies, Large Space Structures, Measuring Instruments, Pointing Control Systems, Spacecraft Control, X Ray Telescopes, Attitude Indicators, Displacement, Feedback Control, Ground Tests, Structural Vibration, Test Facilities, X Ray Astronomy
Scientific paper
The Controls, Astrophysics, and Structures Experiment (CASES) is a proposed experiment to collect x ray images of the galactic center and solar disk with unprecedented resolution. This requires precision pointing and suppression of vibrations in the long, flexible structure that comprises the 32-m x ray telescope optical bench. Two separate electro-optical sensors systems are provided for the ground test facility (GTF). The Boom Motion Tracker (BMT) measures eigenvector data for post-mission use in system identification. The Tip Displacement Sensor (TDS) measures boom tip position and is used as feedback for the closed-loop control system that stabilizes the boom. The deployment and testing of the BMT and TDS systems is summarized.
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