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An approach to structure/control simultaneous optimization for large flexible spacecraftThis paper presents an approach to the simultaneous optimal design of a structure and control system for large flexible spacecrafts based on realistic objective function and constraints. The weight or total cost of structure and control system is minimized subject to constraints on the magnitude of response to a given disturbance involving both rigid-body and elastic modes. A nested optimization technique is developed to solve the combined problem. As an example, simple beam-like spacecraft under a steady-state white-noise disturbance force is investigated and some results of optimization are presented. In the numerical examples, the stiffness distribution, location of controller, and control gains are optimized. Direct feedback control and linear quadratic optimal controls laws are used with both inertial and noninertial disturbing force. It is shown that the total cost is sensitive to the overall structural stiffness, so that simultaneous optimization of the structure and control system is indeed useful.
Document ID
19870059519
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Onoda, Junjiro
(Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Haftka, Raphael T.
(Virginia Polytechnic Institute and State University Blacksburg, United States)
Date Acquired
August 13, 2013
Publication Date
August 1, 1987
Publication Information
Publication: AIAA Journal
Volume: 25
ISSN: 0001-1452
Subject Category
Spacecraft Design, Testing And Performance
Accession Number
87A46793
Funding Number(s)
CONTRACT_GRANT: NAG1-224
Distribution Limits
Public
Copyright
Other

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