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Proceedings Paper

High-gain integral dynamic compensation robust control for a satellite with mobile body
Author(s): Zhao Zhang; Jun Hu
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Paper Abstract

A robust control law using high-gain integral dynamic compensation is introduced for the slew maneuver control of a satellite with one mobile body. The movement of such a mobile body disturbs the satellite attitude and changes the inertia of the whole satellite significantly. The proposed method regards the model uncertainties and exogenous disturbances as unknown inputs to the plant and then a high-gain integrator together with a lead filter is used as an unknown input observer. The observed values are used to compensate the dynamic uncertainties. The unit quaternion is used to represent the orientation which allows overcoming problems arising from representation singularities. The kinematics of the quaternion and angular velocity have a standard form that the backstepping method is used and a Lyapunov candidate function is constructed. Under a certain frequency domain assumption, we can prove the boundedness of the states and the bounds can be designed to be arbitrarily small. Numerical simulation shows the effectiveness of the propsed controller.

Paper Details

Date Published: 2 April 2010
PDF: 10 pages
Proc. SPIE 7651, International Conference on Space Information Technology 2009, 765127 (2 April 2010); doi: 10.1117/12.855414
Show Author Affiliations
Zhao Zhang, Beijing Institute of Control Engineering (China)
National Lab. of Space Intelligent Control (China)
Jun Hu, Beijing Institute of Control Engineering (China)

Published in SPIE Proceedings Vol. 7651:
International Conference on Space Information Technology 2009
Xingrui Ma; Baohua Yang; Ming Li, Editor(s)

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