MULTISCROLL IN COUPLED DOUBLE SCROLL TYPE OSCILLATORS
Metadata of CSIR Papers
View Archive Info| Field | Value | |
| Title |
MULTISCROLL IN COUPLED DOUBLE SCROLL TYPE OSCILLATORS
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| Creator |
Dana, SK
Singh, BK Chakraborty, S Yadav, RC Kurths, J Osipov, GV Roy, PK Hu, CK |
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| Subject |
Mathematics, Interdisciplinary Applications; Multidisciplinary Sciences
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| Description |
A unidirectional coupling scheme is investigated in double scroll type chaotic oscillators that reveal interesting multiscroll dynamics. Instead of using self-oscillatory systems, in this scheme, double scroll chaos from one oscillator is forced into another similar oscillator in a resting state. This coupling scheme is explored in the Chua oscillator, a modified Chua oscillator and the Lorenz oscillator. We have modified the Chua oscillator by simply changing its piecewise linear function slightly, thereby deriving a new 3-scroll attractor. We have observed 4-scroll, 6-scroll attractors in the driven Chua oscillator and the modified Chua oscillator respectively in an intermittency regime of weaker coupling. We have extended the coupling scheme to the Lorenz system when even more interesting multiscroll dynamics (3-, 4-, 5-, 6-scroll) is observed with decreasing coupling strength. It appears as if a hidden multiscroll structure unfolds with weakening coupling interactions. One after another, additional scrolls appear in the driven Lorenz system when the coupling strength is gradually decreased in the weaker coupling regime. The origin of such multiscroll dynamics is explained using eigenvalue analysis and a bifurcation diagram. A schematic diagram of the multiscroll trajectories is presented to further elucidate the evolution of the scrolls. Experimental evidence is also presented using the Chua circuit and an electronic analog of the Lorenz system.
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| Publisher |
WORLD SCIENTIFIC PUBL CO PTE LTDSINGAPORE5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
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| Date |
2011-09-20T12:12:44Z
2011-09-20T12:12:44Z 2008 |
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| Type |
Article
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| Identifier |
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS
0218-1274 http://hdl.handle.net/123456789/14402 |
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| Language |
English
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