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Proceedings Paper

Optical pathlength control experiment on a precision truss structure
Author(s): Zahidul H. Rahman; John T. Spanos; John D. O'Brien; Cheng-Chih Chu
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Paper Abstract

The experimental research at the Jet Propulsion Laboratory (JPL) aimed at developing and validating new design methodology arising out of NASA's Control Structure Interaction and Orbital Stellar Interferometer programs is presented. Structural and direct optical pathlength controls are combined to maintain the pathlength variation below 10 nanometer rms. The bandwidth of the controller is 500 Hz with the disturbance rejection of over 70 dB at frequencies below 10 Hz and over 20 dB at frequencies near 100 Hz.

Paper Details

Date Published: 8 September 1993
PDF: 8 pages
Proc. SPIE 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems, (8 September 1993); doi: 10.1117/12.152814
Show Author Affiliations
Zahidul H. Rahman, Jet Propulsion Lab. (United States)
John T. Spanos, Jet Propulsion Lab. (United States)
John D. O'Brien, Jet Propulsion Lab. (United States)
Cheng-Chih Chu, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 1917:
Smart Structures and Materials 1993: Smart Structures and Intelligent Systems
Nesbitt W. Hagood; Gareth J. Knowles, Editor(s)

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