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Modeling and control of flexible space structuresThe effects of actuator and sensor locations on transfer function zeros are investigated, using uniform bars and beams as generic models of flexible space structures. It is shown how finite element codes may be used directly to calculate transfer function zeros. The impulse response predicted by finite-dimensional models is compared with the exact impulse response predicted by the infinite dimensional models. It is shown that some flexible structures behave as if there were a direct transmission between actuator and sensor (equal numbers of zeros and poles in the transfer function). Finally, natural damping models for a vibrating beam are investigated since natural damping has a strong influence on the appropriate active control logic for a flexible structure.
Document ID
19830063893
Document Type
Conference Paper
Authors
Wie, B. (Stanford Univ. CA, United States)
Bryson, A. E., Jr. (Stanford University Stanford, CA, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1981
Subject Category
SPACECRAFT DESIGN, TESTING AND PERFORMANCE
Meeting Information
Dynamics and control of large flexible spacecraft; Third Symposium(Blacksburg, VA)
Funding Number(s)
CONTRACT_GRANT: NAG1-97
CONTRACT_GRANT: NGL-05-020-007
Distribution Limits
Public
Copyright
Other