二维Duffing振子的大参数随机共振及微弱信号检测研究  

Large parameter stochastic resonance of two-dimensional Duffing oscillator and its application on weak signal detection

作　　者：冷永刚[1,2] 赖志慧[1] 范胜波[1] 高毓璣[1] 

机构地区：[1]天津大学机械工程学院,天津300072 [2]天津大学,机构理论与装备设计教育部重点实验室,天津300072

出　　处：《物理学报》2012年第23期71-80,共10页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:51275336;50975202);北京市先进制造技术重点实验室开放项目(批准号:001000546612018)资助的课题~~

摘　　要：研究了二维Duffing振子在绝热近似条件下的随机共振特性,针对大参数条件,提出二维Duffing振子的大参数随机共振,并探讨二维Duffing振子变尺度随机共振和参数调节随机共振的关联性,揭示大参数条件下Duffing振子随机共振检测特征信号的机理,扩展其在微弱信号检测领域中的应用.In this paper, the stochastic resonance of two-dimensional Duffing oscillator under the adiabatic assumption is studied. For the large parameter condition, we propose the large parameter stochastic resonance of two-dimensional Duffing oscillator, and discuss the relationship between the scale transformation stochastic resonance and the parameter adjustment stochastic resonance. Then we reveal the mechanism of signal detection by Duffing oscillator stochastic resonance in large parameter condition, and extend its application to weak signal detection.

关 键 词：DUFFING振子 随机共振 变尺度 参数调节 

分 类 号：TN911.23[电子电信—通信与信息系统]