Eliminating spiral waves and spatiotemporal chaos using feedback
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Authors: | G Y Yuan S G Chen S P Yang |
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Institution: | (1) Department of Physics, Hebei Normal University, Shijiazhuang, 050016, P.R. China;(2) Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing, 100088, P.R. China |
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Abstract: | Spiral waves and spatiotemporal chaos are sometimes
harmful and should be controlled. In this letter we present a
feedback scheme to eliminate them. We first collect feedback signals
at a certain time t0. Then wait for the system at the excitable
position to enter the recovering state. When the time comes, the
feedback signals are added. This scheme has two advantages. Firstly,
the tip can be eliminated together with the body of spiral wave.
Secondly, the injected feedback signals can be very weak and the
duration can be very short so that the original system is nearly not
to be affected, which is important for practical applications. |
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Keywords: | 05 70 Ln Nonequilibrium and irreversible thermodynamics 05 45 Gg Control of chaos applications of chaos |
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