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Controllability and observability for flexible spacecraftCurrent interest in extended sensing and actuation for the control of flexible spacecraft has led to the use of modern multivariable control theory and the associated concepts of controllability and observability. This paper shows how to evaluate these properties on a mode-by-mode basis for flexible spacecraft control analysis. Relatively simple criteria are derived which indicate the degree of controllability (observability) of each mode in simple literal terms. These criteria provide physical insight and practical guidance on the type, number, and positioning of sensors and actuators. The results are interpreted for force and torque actuators, and for attitude and deformation measurements. To illustrate these ideas, sample controllability and observability 'surfaces' are presented for the Purdue generic flexible spacecraft model.
Document ID
19800047510
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Hughes, P. C.
(Toronto, University Toronto, Canada)
Skelton, R. E.
(Purdue University West Lafayette, Ind., United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1979
Subject Category
Spacecraft Design, Testing And Performance
Meeting Information
Meeting: Dynamics and control of large flexible spacecraft
Location: Blacksburg, VA
Start Date: June 21, 1979
End Date: June 23, 1979
Accession Number
80A31680
Funding Number(s)
CONTRACT_GRANT: JPL-955369
Distribution Limits
Public
Copyright
Other

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