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• W3165229103 abstract "Abstract This paper studies the control of geometric profile of a librating electrodynamic tether by model predictive control using the induced electric current in tether only. First, a high-fidelity multiphysics model of an electrodynamic tether system is built based on the nodal position finite element method and the orbital-motion-limited theory. Second, a state estimator is proposed to estimate the geometric profile of a librating electrodynamic tether, where only the positions and velocities at the tether ends are measurable. The non-measurable geometric profile of tether between two ends is estimated by the high-fidelity multiphysics model with the input of the measurement at tether ends in the spatial domain. To avoid the singularity or ambiguity in the estimation, the geometric profile of tether is then propagated in the time domain by the extended Kalman filter. Third, the problem of controlling the geometric profile of a librating electrodynamic tether is converted into a trajectory tracking problem of the underactuated electrodynamic tether system, where the induced electric current in the tether is the only control input. The control input is optimized by the model predictive control method subject to the output and input control constraints. The numerical simulation results show that the proposed approach is capable of effectively controlling the shape of the liberating electrodynamic tether to the reference trajectory." @default.
• W3165229103 created "2021-06-07" @default.
• W3165229103 creator A5033946843 @default.
• W3165229103 creator A5078875331 @default.
• W3165229103 date "2021-05-13" @default.
• W3165229103 modified "2023-09-27" @default.
• W3165229103 title "Model Predictive Control for Electrodynamic Tether Geometric Profile in Orbital Maneuvering with Finite Element State Estimator" @default.
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• W3165229103 doi "https://doi.org/10.21203/rs.3.rs-474272/v1" @default.
• W3165229103 hasPublicationYear "2021" @default.
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