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The Microgravity Vibration Isolation Mount: A Dynamic Model for Optimal Controller DesignVibration acceleration levels on large space platforms exceed the requirements of many space experiments. The Microgravity Vibration Isolation Mount (MIM) was built by the Canadian Space Agency to attenuate these disturbances to acceptable levels, and has been operational on the Russian Space Station Mir since May 1996. It has demonstrated good isolation performance and has supported several materials science experiments. The MIM uses Lorentz (voice-coil) magnetic actuators to levitate and isolate payloads at the individual experiment/sub-experiment (versus rack) level. Payload acceleration, relative position, and relative orientation (Euler-parameter) measurements are fed to a state-space controller. The controller, in turn, determines the actuator currents needed for effective experiment isolation. This paper presents the development of an algebraic, state-space model of the MIM, in a form suitable for optimal controller design.
Document ID
19970025158
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Hampton, R. David (McNeese State Univ. Lake Charles, LA United States)
Tryggvason, Bjarni V. (Canadian Space Agency Saint Hubert, Quebec Canada)
DeCarufel, Jean (Canadian Space Agency Saint Hubert, Quebec Canada)
Townsend, Miles A. (Virginia Univ. Charlottesville, VA United States)
Wagar, William O. (NASA Lewis Research Center Cleveland, OH United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1997
Subject Category
Cybernetics
Report/Patent Number
E-10766
NASA-TM-107478
NAS 1.15:107478
Report Number: E-10766
Report Number: NASA-TM-107478
Report Number: NAS 1.15:107478
Accession Number
97N24781
Funding Number(s)
PROJECT: RTOP 963-60-0C
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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