Parameter-induced stochastic resonance with a periodic signal
Li Jian-Long(李建龙)a)† and Xu Bo-Hou(徐博侯)b)
a Institute of Information and Communication Engineering, Zhejiang University, Hangzhou, 310027, China; b Department of Mechanics, State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China
Abstract In this paper conventional stochastic resonance (CSR) is realized by adding the noise intensity. This demonstrates that tuning the system parameters with fixed noise can make the noise play a constructive role and realize parameter-induced stochastic resonance (PSR). PSR can be interpreted as changing the intrinsic characteristic of the dynamical system to yield the cooperative effect between the stochastic-subjected nonlinear system and the external periodic force. This can be realized at any noise intensity, which greatly differs from CSR that is realized under the condition of the initial noise intensity not greater than the resonance level. Moreover, it is proved that PSR is different from the optimization of system parameters.
Received: 22 March 2006
Revised: 15 May 2006
Accepted manuscript online:
Fund: Project supported by the Natural Science
Foundation of China (Key Grant No 10332030) and
the National 973 Project of China (Grant No 5132103ZZT21B).
Cite this article:
Li Jian-Long(李建龙) and Xu Bo-Hou(徐博侯) Parameter-induced stochastic resonance with a periodic signal 2006 Chinese Physics 15 2867
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