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Astrodynamics

, Volume 2, Issue 3, pp 187–199 | Cite as

Libration control of bare electrodynamic tether for three-dimensional deployment

  • Caoqun Luo
  • Hao Wen
  • Dongping Jin
Research Article

Abstract

Various promising applications of electrodynamic tether have been proposed for space missions over the past decades. A crucial issue of these missions is to deploy an electrodynamic tether under a rapid and stable state. This paper aims to stabilize the libration motions of a bare electrodynamic tether during its three-dimensional deployment. The tethered system under consideration consists of a main-satellite and a sub-satellite connected to each other through a bare electrodynamic tether. A widely used dumbbell assumption considering the tether as rigid and inflexible is adopted to facilitate the dynamic modeling and analysis of the tethered system. A pair of active control laws is synthesized by simultaneously regulating the electric current and tether tension to achieve an efficient stabilization of the three-dimensional libration of the bare electrodynamic tether in the deployment process. Moreover, comparisons of three groups of numerical simulations are performed to evaluate the in uences of orbital inclinations and geomagnetic field models and the performance of the active control laws.

Keywords

bare electrodynamic tether deployment three-dimensional libration control 

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 11772150), by the Civil Aerospace Pre-research Project of China, and by the Natural Science Foundation of Hunan Province (Grant No. 2016JJ3141).

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Copyright information

© Tsinghua University Press 2018

Authors and Affiliations

  1. 1.Nanjing University of Aeronautics and AstronauticsNanjingChina
  2. 2.State Key Laboratory of Mechanics and Control of Mechanical StructuresNanjing University of Aeronautics and AstronauticsNanjingChina

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