Micro-Precision Interferometer Testbed: end-to-end system integration of control structure interaction technologies

Details Micro-Precision Interferometer Testbed: end-to-end system integration of control structure interaction technologies Micro-Precision Interferometer Testbed: end-to-end system integration of control structure interaction technologies

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993spie.1947...91n&link_type=abstract

Proc. SPIE Vol. 1947, p. 91-103, Spaceborne Interferometry, Robert D. Reasenberg; Ed.

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This paper describes the overall design and planned phased delivery of the ground-based Micro-Precision Interferometer (MPI) Testbed. The testbed is a half scale replica of a future space-based interferometer containing all the spacecraft subsystems necessary to perform an astrometric measurement. Appropriate sized reaction wheels will regulate the testbed attitude as well as provide a flight-like disturbance source. The optical system will consist of two complete Michelson interferometers. Successful interferometric measurements require controlling the positional stabilities of these optical elements to the nanometer level. The primary objective of the testbed is to perform a system integration of Control Structure Interaction (CSI) technologies necessary to demonstrate the end-to-end operation of a space- based interferometer, ultimately proving to flight mission planners that the necessary control technology exists to meet the challenging requirements of future space-based interferometry missions. These technologies form a multi-layered vibration attenuation architecture to achieve the necessary quiet environment. This three layered methodology blends disturbance isolation, structural quieting and active optical control techniques. The paper describes all the testbed subsystems in this end-to-end ground-based system as well as the present capabilities of the evolving testbed.

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