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Actuator Grouping Optimization on Flexible Space ReflectorsWith the rapid advances in deployable membrane and mesh antenna technologies, the feasibility of developing large, lightweight reflectors has greatly improved. In order to achieve the required surface accuracy, precision surface control is needed on these lightweight reflectors. For this study, an analytical model is shown which combines a flexible Kapton reflector with Polyvinylidene fluoride (PVDF) actuators for surface control. Surface errors are introduced that are similar to real world scenarios, and a least squares control algorithm is developed for surface control. Experimental results on a 2.4 meter reflector show that while the analytical reflector model is generally correct, due to idiosyncrasies in the reflector it cannot be used for online control. A new method called the En Mass Elimination algorithm is used to determine the optimal grouping of actuators when the number of actuators in the system exceeds the number of power supplies available.
Document ID
20120004233
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Hill, Jeffrey R.
(Michigan Univ. Ann Arbor, MI, United States)
Wang, K. W.
(Michigan Univ. Ann Arbor, MI, United States)
Fang, Houfei
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Quijano, Ubaldo
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 25, 2013
Publication Date
March 11, 2011
Subject Category
Communications And Radar
Meeting Information
Meeting: 2011 Smart Structures/NDE
Location: San Diego, CA
Country: United States
Start Date: March 11, 2011
End Date: March 15, 2011
Distribution Limits
Public
Copyright
Other
Keywords
en masse elimination (EME) algorithm
gossamar
shape control
grouping optimization

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