Analytical libration control law for electrodynamic tether system with current constraint
作者机构：State Key Laboratory of Mechanics and Control for Aerospace StructuresNanjing University of Aeronautics and AstronauticsNanjing210016China
出 版 物：《Astrodynamics》 (航天动力学（英文）)
年 卷 期：2024年第8卷第2期
页 面：237-246页
核心收录：
学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学]
基 金：supported by the National Natural Science Foundation of China under Grant Nos.11902145 and 12232011 China Postdoctoral Science Foundation under Grant No.2021M691574 Fundamental Research Funds for the Central Universities under Grant No.NS2022002
主 题：electrodynamic tether system(EDTS) libration dynamics analytical control current constraint
摘 要：This study focuses on stabilizing the libration dynamics of an electrodynamic tether system(EDTS)using generalized torques induced by the Lorentz *** contrast to existing numerical optimization methods,a novel analytical feedback control law is developed to stabilize the in-plane and out-of-plane motions of a tether by modulating the electric current *** saturation constraint on the current is accounted for by adding an auxiliary dynamic system to the *** enhance the robustness of the proposed controller,multiple perturbations of the orbital dynamics,modeling uncertainties,and external disturbances are approximated using a neural network in which the weighting matrix and approximation error are estimated simultaneously,such that these perturbations are well compensated for during the control design of the ***,a dynamically scaled generalized inverse is utilized to address the singular matrix in the control *** closed-loop system is proven to be ultimately bounded based on Lyapunov stability ***,numerical simulations are performed to demonstrate the effectiveness of the proposed analytical control law.
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