期刊名称：International Journal of Signal Processing, Image Processing and Pattern Recognition
印刷版ISSN：2005-4254
出版年度：2013
卷号：6
期号：6
页码：275-284
DOI：10.14257/ijsip.2013.6.6.25
出版社：SERSC
摘要：A system based on the model of overdamped fractional Langevin equation is constructed, the relation between fractional order and stochastic resonance is studied, it is found that stochastic resonance phenomenon is not produced or not obvious with given certain weak periodic signal and noise intensity. Applying external periodic signal is proposed to produce or strengthen stochastic resonance. The numerical simulations show that the stochastic resonance phenomenon can be effectively controlled, by changing the external periodic signal's frequency or amplitude. We find the non-monotonic behaviors between the driving parameters and signal-to-noise(SNR). Optimal stochastic resonance can be achieved by adjusting one of the parameters as frequency and amplitude.
关键词：Stochastic resonance; overdamped fractional Langevin equation; control
