Modeling and simulations of orbital capture with space tether-net system
ZHAI Guang, QIU Yue, LIANG Bin, LI Cheng
Author NameAffiliation
ZHAI Guang Dept. of Control Science and Engineering, Harbin Institute of Technology, Harbin 150001, China, gzhai@robotsat.com
QIU Yue Dept. of Control Science and Engineering, Harbin Institute of Technology, Harbin 150001, China, gzhai@robotsat.com
LIANG Bin Dept. of Control Science and Engineering, Harbin Institute of Technology, Harbin 150001, China, gzhai@robotsat.com
LI Cheng Dept. of Control Science and Engineering, Harbin Institute of Technology, Harbin 150001, China, gzhai@robotsat.com
Abstract:
A new flexible tether-net space robotic system used to capture space debris is presented in this paper. With a mass point assumption, a dynamic model of the tether-net system was established in orbital frame by applying Lagrange Equations. In order to investigate the net in-plane trajectories after being cast, the non-controlled R-bar and V-bar captures were simulated with ignoring the out-of-plane libration, and the effect of in-plane libration on the trajectories of the capture net was demonstrated by simulation results. With an effort to damp the in-plane libration, the control scheme based on tether tension was investigated, then an integrated control scheme was proposed by introducing thrusters into the system, and the nonlinear close-loop dynamics was linearised by feedforward strategy. Simulation results show that the feedforward controller is effective for in-plane libration damping and enables the capture net to track an expected trajectory.
Key words: tether-net system orbital capture modeling simulation feedforeward control
DOI：10.11916/j.issn.1005-9113.2009.02.005
Clc Number:TP24
Fund:
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Modeling and simulations of orbital capture with space tether-net system
本站小编 哈尔滨工业大学/2019-10-23
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