Optical pathlength control experiment on a precision truss structure

Zahidul H. Rahman; John T. Spanos; John D. O'Brien; Cheng-Chih Chu

doi:10.1117/12.152814

8 September 1993 Optical pathlength control experiment on a precision truss structure

Zahidul H. Rahman, John T. Spanos, John D. O'Brien, Cheng-Chih Chu

Proceedings Volume 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems; (1993) https://doi.org/10.1117/12.152814
Event: 1993 North American Conference on Smart Structures and Materials, 1993, Albuquerque, NM, United States

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.

Citation Download Citation

Zahidul H. Rahman, John T. Spanos, John D. O'Brien, and Cheng-Chih Chu "Optical pathlength control experiment on a precision truss structure", Proc. SPIE 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems, (8 September 1993); https://doi.org/10.1117/12.152814

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