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Modeling and stability of segmented reflector telescopes - A decentralized approachThe decentralization of a segmented reflector telescope based on a finite-element model of its structure is considered. The decentralization of the system at the panel level is considered. Each panel is originally treated as an isolated subsystem so that the controller design is performed independently at the local level, and then applied to the composite system for stability analysis. The panel-level control laws were designed by means of pole placement using local output feedback. Simulation results show a better 1000:1 vibration attenuation in panel position when compared to the open-loop system. It is shown that the overall closed-loop system is exponentially stable provided that certain conditions are met. The advantage to the decentralized approach is that the design is performed in terms of the low-dimensionality subsystems, thus drastically reducing the design computational complexities.
Document ID
19910045498
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ryaciotaki-Boussalis, Helen A.
(California State University Los Angeles, United States)
Ih, Che-Hang Charles
(JPL Pasadena, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
Cybernetics
Accession Number
91A30121
Distribution Limits
Public
Copyright
Other

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