High-gain integral dynamic compensation robust control for a satellite with mobile body

Zhao Zhang; Jun Hu

doi:10.1117/12.855414

2 April 2010 High-gain integral dynamic compensation robust control for a satellite with mobile body

Zhao Zhang, Jun Hu

Proceedings Volume 7651, International Conference on Space Information Technology 2009; 765127 (2010) https://doi.org/10.1117/12.855414
Event: International Conference on Space Information Technology 2009, 2009, Beijing, China

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.

Citation Download Citation

Zhao Zhang and Jun Hu "High-gain integral dynamic compensation robust control for a satellite with mobile body", Proc. SPIE 7651, International Conference on Space Information Technology 2009, 765127 (2 April 2010); https://doi.org/10.1117/12.855414

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