Energy Estimate of Boundary Controlled Vibrating Hybrid Structure Subject to Uncertain Forces
Publication: Journal of Aerospace Engineering
Volume 16, Issue 3
Abstract
We study here a model hybrid system consisting of a flexible rectangular space structure such as a solar cell array, hoisted at one end by a movable rigid hub, set to vibration from certain initial conditions, but subject to uncertain disturbing forces distributed along its length. Assuming that the control of vibrations is sought by a damper at the hub end proportional to a general nonlinear function of the velocity of the point, we obtain an energy estimate of vibrations over a time interval in terms of initial energy of the system and the time integral of the norm of the disturbance over the length of the panel. From this, estimates of tolerance level of the disturbances are obtained. Both torsional and flexural modes of vibration are considered.
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Information
Published In
Journal of Aerospace Engineering
Volume 16 • Issue 3 • July 2003
Pages: 115 - 120
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Jan 2, 2002
Accepted: Feb 13, 2002
Published online: Jun 13, 2003
Published in print: Jul 2003
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