Dynamics of orbital boost maneuver of low Earth orbit satellites by electrodynamic tethers

Liu, Jinyu; Zhan, Xingqun; Li, Gangqiang; Wang, Qingtao; Wang, Shizhuang

doi:10.1007/s42401-020-00053-y

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…when  is sufficiently small, the quasi-equilibrium positions in the first group (14) are approached the local vertical and in the second group (15) are close to the horizontal. To ensure that the above quasi-equilibrium positions existence, the condition 1   must be satisfied.…”

Section: A Quasi-equilibrium Positions Of Edt Systemmentioning

confidence: 99%

“…For example, Xu and Kong established two different models in their paper, and it can be found that the dumbbell model has theoretical rationality, and the flexible cable model is more consistent with the natural characteristics of the EDT system [13]. Liu used an insulated EDT as an orbital boost maneuver system to analyze the libration dynamics of electrodynamic tethered satellite take into account coupled multiphysics model [14], [15]. Moreover, a multipoint model is used to verify the effectiveness of the control law designed by a rigid rod model [4].…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Analysis and Libration Control of Electrodynamic Tether for Reboost Applications

Tian

2021

IEEE Access

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Electrodynamic tethers can be employed as an immensely promising propulsion system for boosting the altitude of spacecraft, cite instance space stations, satellites, and the like, which ameliorates the expenditure of fuel and minimizes detrimental spacecraft impacts. This paper analyzes the libration dynamics and stability of reboost spacecraft with insulation electrodynamic tethers. A key aspect of spacecraft reboost with an electrodynamic tether is how to keep the tether aligned with the local vertical and stabilized in the context of external disturbances. It has been shown in the current research that the librational instability results in the tether slackness and swings in long-term motion without effective control. Moreover, electrodynamic force (Ampere force) is regarded as a distributed load acting on the tether causing tether deformations which may be detrimental if severe. Aiming at the problem, an optimal control method and PID are given to stabilize the libration motion by modulating the tether current. The dynamical model of the electrodynamic tether system is established using Lagrange equations of the second kind under considering tether deformation and control laws are proposed based on the model. The effectiveness of libration stability control is validated through numerical results in which a current regulation law with appropriate control parameters is used for the libration motion of electrodynamic tether system.

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Section: A Quasi-equilibrium Positions Of Edt Systemmentioning

confidence: 99%