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Experimental evaluation of active-member control of precision structuresThe results of closed loop experiments that use piezoelectric active-members to control the flexible motion of a precision truss structure are described. These experiments are directed toward the development of high-performance structural systems as part of the Control/Structure Interaction (CSI) program at JPL. The focus of CSI activity at JPL is to develop the technology necessary to accurately control both the shape and vibration levels in the precision structures from which proposed large space-based observatories will be built. Structural error budgets for these types of structures will likely be in the sub-micron regime; optical tolerances will be even tighter. In order to achieve system level stability and local positioning at this level, it is generally expected that some form of active control will be required.
Document ID
19900011768
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Fanson, James (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Blackwood, Gary (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Chu, Cheng-Chih (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1989
Publication Information
Publication: NASA, Langley Research Center, NASA(DOD Controls-Structures Interaction Technology 1989
Subject Category
Spacecraft Design, Testing And Performance
Accession Number
90N21084
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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