生物液膜振荡器中的振动共振  

Vibrational Resonance of Liquid Membrane Oscillator

作　　者：董涛[1] 李军[1] 

机构地区：[1]晋中学院化学化工学院,山西晋中030600

出　　处：《晋中学院学报》2015年第3期40-46,共7页Journal of Jinzhong University

摘　　要：通过数值模拟的方法研究了生物液膜振荡器在高、低两种不同频率信号作用下的振动共振现象.结果表明:体系线性响应随高频信号振幅的变化发生了多重振动共振,且低频信号的频率越低,系统的多重振动共振强度越大.体系线性响应随高频信号频率的变化可以发生高频频率依赖的多重振动共振,体系对大振幅低频信号的放大程度要比小振幅低频信号大;低频信号频率越低,系统的高频频率依赖的多重振动共振强度越大.通过负反馈机制可以有效调节体系多重振动共振峰的个数和高频频率依赖的多重振动共振的强度.当低频信号的频率等于高频信号的频率时,体系可以发生类频率共振强化的振动共振.The vibrational resonance （VR） in a liquid membrane oscillator was studied. Results show that the vibrational muhiresonance can happen under the influence of low frequency and high frequency signals. The lower the frequency of the low- frequency signal is , the greater the intensity of the vibrational multiresonance becomes. The high-frequency-dependent vibrational muhiresonanee occurs when the frequency of the high -frequency signal is varied.The weak signal with lower frequency and higher amplitude is more likely to be amplified during the high-frequency-dependent vibrational muhiresonance.The negative feedback mechanism plays an important role in the the vibrational muhiresonanee and the high-frequency-dependent vibrational muhiresonance. Furthermore, when the frequency of the low frequency signal is equal to the high frequency signal, Frequency- resonance-enhanced vibrational resonance-like can occur.

关 键 词：生物液膜振荡器 振动共振 反馈控制 类频率共振强化的振动共振 

分 类 号：Q66[生物学—生物物理学]