Genesio体系中的内信号随机共振

Internal signal stochastic resonance of genesio system

采用数值模拟的方法,研究了不同耦合方式下Genesio体系中振子的动力学行为,分别讨论了当体系处于周期-1振荡态时,单个振子、双边耦合和单边耦合情况下体系对噪声及耦合的响应情况。发现噪声强度、耦合方式及耦合强度都会对体系的内信号传递产生不同的影响。在合适的噪声水平和耦合强度及方式下,体系内信号能够被传递和放大,产生内信号随机共振现象。同时发现双边耦合比单边耦合更有利于信号的传递。本文的模拟结果将对内信号随机共振现象的试验研究有一定的意义。

Internal signal stochastic resonance （ISSR） has been numerically studied by different coupling ways, i. e. , uncoupling, bilateral-coupling and unilateral-coupling, in a two-coupled Genesio system, which is capable of supporting complex periodic and chaotic behaviors. The effects of noise intensity, coupling ways and coupling intensity on the dynamical behaviors of the system are discussed in detail. The phenomenon of ISSR is observed and internal signal of the system can be transferred and enhanced at optimal coupling way and intensity when the system is located in period-1 oscillatory state. And the bilateral-coupling is better for the signal transmission and enhancement than for the unilateral-coupling. We think that the result is meaningful for experimentation study of ISSR phenomenon.