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
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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.Abstract: 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.
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