Statistics – Applications
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..608..570h&link_type=abstract
SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM- STAIF 2002. Conference on Thermophyiscs in Microgravity; Conference on In
Statistics
Applications
Spaceborne And Space Research Instruments, Apparatus, And Components
Scientific paper
Electrodynamic tethers are susceptible to instabilities in a number of different modes, including pendulum librations, transverse wave oscillations, and ``skip rope'' oscillations. We have developed two simple feedback algorithms for controlling these oscillations. The first algorithm requires knowledge of the motion of several points along the length of the tether, and control is achieved by varying the tether current. Detailed simulations of electrodynamic tethers indicate that this feedback control algorithm is successful in stabilizing the dynamics of electrodynamic tethers during extended periods of operation. The second algorithm requires only knowledge of the motion of the tether end-mass. Simulations indicate that this simpler algorithm is also successful in stabilizing the dynamics of the tether, although it stabilizes the oscillations at a higher quasi-steady state level. .
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