Model and Control of Flexible Multibody Satellite
Publication: Journal of Aerospace Engineering
Volume 22, Issue 2
Abstract
In order to estimate total disturbances including parametric uncertainties, unmodeled dynamics, and external disturbances, and achieve the dynamic feedback compensation of the estimated total disturbances, we design a double closed loop attitude active disturbance rejection controller (ADRC). By taking flexible vibrations of solar panels and a flexible antenna as an external disturbance, and using only the estimated transformation matrix of control input, a simplified dynamic model has been used to replace the accurate dynamic model of a rigid body in a flexible multibody satellite dynamics model. Simulation results indicate that the attitude ADRC designed still has the original dynamic response when large external disturbance acts on the system. Therefore, we come to the conclusion that the ADRC designed can be used to solve the problem of control systems with uncertainties in the process of modeling different flexible multibody systems.
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Information & Authors
Information
Published In
Journal of Aerospace Engineering
Volume 22 • Issue 2 • April 2009
Pages: 134 - 138
Copyright
© 2009 ASCE.
History
Received: Jun 12, 2006
Accepted: Jan 9, 2008
Published online: Apr 1, 2009
Published in print: Apr 2009
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