周期调制互关联双态噪声驱动欠阻尼谐振子系统的随机共振  

Stochastic Resonance in Underdamped Harmonic Oscillator with Time Modulated Cross-correlated Dichotomous Noise

作　　者：郑利丽[1] 于志明[2] 

机构地区：[1]南京理工大学紫金学院电子工程与光电技术系,江苏南京210046 [2]连云港师范高等专科学校物理系

出　　处：《通化师范学院学报》2009年第10期29-31,38,共4页Journal of Tonghua Normal University

摘　　要：该文主要研究关联双态噪声驱动欠阻尼谐振子模型中的随机共振现象,分析并讨论了互关联不随时间变化和受周期信号调制下系统的输出特性.研究发现:周期调制互关联使得互关联强度进入系统输出表达式,调节互关联强度,可以在信号放大率随输入信号频率变化曲线上观察到双重随机共振现象.SR phenomenon in an underdamped harmonic oscillator driven by multiplicative and additive dichotomous noise is studied. In the present of time independent as well as the time modulated cross - correlation, the output characteristics of the system are analyzed. It is found that, due to the time modulated cross - correlation, the cross - correlated intensity enters into the expression of the system output. Adjusting the cross- correlated intensity, we obtained double stochastic resonance.

关 键 词：双态噪声 周期调制互关联 欠阻尼 谐振子 随机共振 

分 类 号：O414[理学—理论物理]