Stochastic resonance of a damped oscillator with frequency fluctuation driven by a periodic external force |
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| Authors: | Zhang Ling-Ying Jin Guo-Xiang Cao Li and Wang Zhi-Yun |
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| Institution: | [1]School of Physics and Electronic Engineering, Hubei University of Arts and Science, Xiangyang 441053, China; [2]School of Computer Science and Engineering, Wuhan Institute of Technology, Wuhan 430073, China; [3]School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | Considering a damped linear oscillator model subjected to a white noise with an inherent angular frequency and a periodic external driving force,we derive the analytic expression of the first moment of output response,and study the stochastic resonance phenomenon in a system.The results show that the output response of this system behaves as a simple harmonic vibration,of which the frequency is the same as the external driving frequency,and the variations of amplitude with the driving frequency and the inherent frequency present a bona fide stochastic resonance. |
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| Keywords: | frequency noise the first moment stochastic resonance |
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