物理学报2012，Vol.61Issue(8)：50-59,10.
大参数周期信号随机共振解析
The analysis of stochastic resonance of periodic signal with large parameters
摘要
Abstract
It is of significance in engineering to achieve stochastic resonance of periodic signal with large frequency by turning the parametersof a bistable system. The normalization transform of bistable system parameter is deduced. Stochastic resonance of periodic signal with large parameters is exhibited by numerical simulation based on the proposed normalization transform, by which an arbitrary high frequency periodic signal can be processed. Analog circuit is used to verify the stochastic resonance happening in the bistable system with large parameters. The mechanism of realizing a periodic signal with large parameters by twice sampling stochastic resonance is analyzed, which is compared with normalization transform method through numerical simulation. The simulation results show that the numerical solution of twice sampling stochastic resonance is prone to being unstable with the variation of mixed input signal amplitude, while the normalization transform method possesses more stability and adaptability.关键词
双稳系统/大参数随机共振/弱周期信号检测/数值仿真Key words
bistable system/stochastic resonance with large parameters/detection of weak periodic signal/numer-ical simulation分类
数理科学引用本文复制引用
杨定新,胡政,杨拥民..大参数周期信号随机共振解析[J].物理学报,2012,61(8):50-59,10.基金项目
国家自然科学基金（批准号：50905184）资助的课题. （）
