Parameter-induced stochastic resonance with a periodic signal |
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| Authors: | Li Jian-Long and Xu Bo-Hou |
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| Affiliation: | Institute of Information and Communication Engineering, Zhejiang University, Hangzhou, 310027, China; Department of Mechanics, State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | In this paper conventional stochastic resonance (CSR) is realized by adding thenoise intensity. This demonstrates that tuning the system parameters with fixednoise can make the noise play a constructive role and realize parameter-inducedstochastic resonance (PSR). PSR can be interpreted as changing the intrinsiccharacteristic of the dynamical system to yield the cooperative effect between thestochastic-subjected nonlinear system and the external periodic force. This can berealized at any noise intensity, which greatly differs from CSR that is realizedunder the condition of the initial noise intensity not greater than the resonancelevel. Moreover, it is proved that PSR is different from the optimization of systemparameters. |
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| Keywords: | tuning parameters stochastic resonance signal-to-noise ratio |
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