Deep learning for deorbiting control of an electrodynamic tether system

Ma, Xiaolei; Wen, Hao

doi:10.1016/j.actaastro.2022.10.019

Cited by 11 publications

(3 citation statements)

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“…4, the critical range of  that satisfies inequality (12) narrows gradually with  increase when o i is constant ( 1 and 2 quickly when the out-plane angle is over or close to the corresponding lower bound. These results demonstrate that the libration motion will go tumbling rapidly once the out-plane angle approaches or exceeds its critical range, which can be determined by inequality (12).…”

Section: Critical Range Of φmentioning

confidence: 95%

“…Further, Peláez et al [11] derived the equations of libration motion in elliptic orbit and explored the combined effects of the eccentricity and electrodynamic force. To achieve a more accurate modeling, Ma et al [12] derived the equations of libration motion by incorporating the J2 perturbation of gravitational field. Yang et al [13] utilized the International Geomagnetic Reference Field up to 13th order to model the geomagnetic field, and conducted a comparative analysis between the high order geomagnetic field and non-tilted dipole model.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al [18] utilized back-stepping sliding mode control to reduce the tether's attitude and increase robustness considering the extremely nonlinear. Ma et al [19] investigated the stable deorbiting control of EDT system by deep learning-based methods.…”

Section: Introductionmentioning

confidence: 99%

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The dynamic instability analysis of electrodynamic tether system

Li,

Yang,

Zhang

2024

Nonlinear Dyn

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The libration motion of conductive tether in electrodynamic tether system had been demonstrated unstable inherently. This paper conducts a further dynamic analysis of the instability in electrodynamic tether system, specifically investigating the existence of periodic solution and equilibrium point, as well as exploring the condition for rapid instability in libration motion. The dumbbell model is employed to depict the in-plane and out-plane libration motion, and the parameter  is introduced to incorporate the influences of tether current and inclination. The critical ranges of  and out-plane angle that determine whether the libration motion will go tumbling quickly are derived analytically based on the existence condition of periodic solution and equilibrium point. The numerical simulations were conducted to demonstrate these analytical critical ranges, and the results show that the libration motion will become unstable quickly if the out-plane angle or  exceeds the critical range even under control strategy. This critical range of  and out-plane angle is a general conclusion applicable to any situation (within the limitation of the model considered in this study), which can be utilized in guiding the design of system parameters to avoid rapid instability of electrodynamic tether system.

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Section: Critical Range Of φmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%