AbstractAn important application of tethered satellites is atmospheric studies by extension of a subsatellite into the atmosphere through tether while the parent spacecraft flies at an altitude high enough so that the deleterious effects of the atmosphere on it are inconsequential. The key issue in the operation is the swift extension of the tether. Inordinate librations of the tether during extension are undesirable. Tension control, in conjunction with a thruster to control the out-of-pane motion, is a popular technique of control during extension. Many nonlinear feedback tension control laws based on Liapunov's direct method have been proposed. In this paper, an alternate technique, a linear state variable feedback control law is used. The control gains are determined from theorems in analytical mechanics. Simulation of the nonlinear equations using this controller affirms that the tether extends to the desired length in a reasonable amount of time.
Extension of tethered satellites in the atmosphere
Acta Astronautica ; 52 , 1 ; 1-10
1998-09-25
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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