Energy-Based Current Control for Stabilizing a Flexible Electrodynamic Tether System |
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Authors: | Hao Wen Bensong Yu and Dongping Jin |
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Affiliation: | State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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Abstract: | An energy-based controller of electric current is synthesized for the libration stabilization of an electrodynamic tether system, which consists of a relatively large main-satellite and a sub-satellite of much smaller size. Two dynamic models with different levels of accuracy are considered in this work. First, a dumbbell model of the system is used for the controller design, which aims at damping injection on the libration motions via the real-time regulation of the electric current. Furthermore, the efficacy and performance of the proposed scheme are numerically verified by using a more complex multi-body model which accounts for not only the tether flexibility but also the attitude of the main-satellite. |
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Keywords: | electrodynamic tether flexible energy-based control current control |
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