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Stochastic resonance in an asymmetric bistable system driven by coloured noises |
| Yang Jian-Hua(杨建华) and Liu Xian-Bin(刘先斌)† |
| Institute of Vibration Engineering Research, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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Abstract The phenomenon of stochastic resonance is investigated in an asymmetric bistable system with coloured noises. The approximate Fokker--Planck equation is derived based on the Novikov theorem and the Fox approach. By applying the two-state theory, the expression of the signal-to-noise ratio is obtained in the adiabatic limit. The effects of the noise parameters on signal-to-ratio are discussed. It is found that the stochastic resonance phenomena appear in most cases and disappear in some special cases.
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Received: 14 September 2009
Revised: 27 October 2009
Accepted manuscript online:
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PACS:
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05.40.Ca
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(Noise)
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02.50.Ey
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(Stochastic processes)
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02.30.Jr
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(Partial differential equations)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No.~10672074). |
Cite this article:
Yang Jian-Hua(杨建华) and Liu Xian-Bin(刘先斌) Stochastic resonance in an asymmetric bistable system driven by coloured noises 2010 Chin. Phys. B 19 050504
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