Vibrational resonance in a noise-induced structure.
Vibrational resonance in a noise-induced structure.
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DOI：
10.1103/physreve.66.011106
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发表时间：
2002-07
期刊：
影响因子：
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通讯作者：
A. Zaikin;Luis López;J. Baltanás;J. Kurths;M.A.F Sanjuán
中科院分区：
文献类型：
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作者：
A. Zaikin;Luis López;J. Baltanás;J. Kurths;M.A.F Sanjuán
我们报告的振动共振的影响下，在两个周期性的力量，一个低频（信号）和一个高频（载波）的作用下的空间扩展系统的耦合噪声振荡器。振动共振本身表现为这样的事实，即对于高频力振幅的最佳选择值，系统对低频信号的响应是最佳的。这种现象是两种效应的综合，一种是导致双稳态的噪声诱导相变，另一种是导致信号处理优化的常规振动共振。数值模拟，证明了这种效果的扩展系统，可以理解的零维“有效”的模型。这种“有效”模型的行为也被电子电路的实验实现所证实。
We report on the effect of vibrational resonance in a spatially extended system of coupled noisy oscillators under the action of two periodic forces, a low-frequency one (signal) and a high-frequency one (carrier). Vibrational resonance manifests itself in the fact that for optimally selected values of high-frequency force amplitude, the response of the system to a low-frequency signal is optimal. This phenomenon is a synthesis of two effects, a noise-induced phase transition leading to bistability, and a conventional vibrational resonance, resulting in the optimization of signal processing. Numerical simulations, which demonstrate this effect for an extended system, can be understood by means of a zero-dimensional "effective" model. The behavior of this "effective" model is also confirmed by an experimental realization of an electronic circuit.