摘要
在高斯噪声同时作用系统阻尼系数和激励信号背景下,研究了欠阻尼二阶线性系统中的随机共振现象.研究结果表明,欠阻尼二阶线性系统中存在随机共振现象,该系统的平均输出幅度增益呈现非单调变化,不仅在一定条件下大于无噪声时的增益,而且调节适当的系统参数和噪声强度能够提高幅度增益.最后,进行了计算机模拟仿真,证实了结论.
This article studies stochastic resonance of the under-damped second-order linear system,whose damping coefficient and the driving signal frequency is perturbed by the Gaussian white noise.Research shows that under-damped second-order linear system existed the phenomenon of stochastic resonance.This system presents the average output amplitude gain(OAG)under certain conditions,not only is greater than when no noise second-order linear system,but also adjusts the system parameters and noise intensity can improve the output amplitude gain.Finally,the computer simulation gives the corresponding results.
出处
《江西师范大学学报(自然科学版)》
CAS
北大核心
2012年第2期120-123,共4页
Journal of Jiangxi Normal University(Natural Science Edition)
基金
昌吉学院科研基金(2011YJYB004)资助项目