| Signal modulating noise effect in bistable stochastic resonance systems and its analog simulation |
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| 作者姓名： | 肖方红 闫桂荣 谢世成 |
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| 作者单位： | [1]School of Civil Engineering and Architecture, Central South University, Changsha 410083, China [2]School of Aerospace, Xi＇an Jiaotong University, Xi＇an 710049, China |
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| 摘 要： | 1 INTRODUCTIONSince stochastic resonance (SR) was presentedby Benzi et al1]to explainthe periodic recurrent iceages ,this phenomenon has continuously attractedconsiderable attention. The termof SRdescribes aphenomenon whereby the response of a nonlinearsystemto a periodic signal can be amplified and op-ti mized by the assistance of noise .Stochastic resonance was first discussedin thecontext of bistable systems . Fauve et al2]per-formed the first experi ment of stochastic resonancewit…
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| 关 键 词： | 信号调制噪声影响 双稳系统 随机共振 模拟仿真 |
| 文章编号： | 1005-9784（2006）05-0595-03 |
| 收稿时间： | 2006-03-10 |
| 修稿时间： | 2006-05-20 |
Signal modulating noise effect in bistable stochastic resonance systems and its analog simulation |
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| Xiao Fang-hong , Yan Gui-rong and Xie Shi-cheng.Signal modulating noise effect in bistable stochastic resonance systems and its analog simulation[J].Journal of Central South University of Technology,2006,13(5):595-597. |
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| Authors: | Xiao Fang-hong Yan Gui-rong and Xie Shi-cheng |
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| Affiliation: | (1) School of Civil Engineering and Architecture, Central South University, 410083 Changsha, China;(2) School of Aerospace, Xi’an Jiaotong University, 710049 Xi’an, China |
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| Abstract: | The effect of signal modulating noise in bistable stochastic resonance systems was studied theoretically and experimentally. A mathematical analysis was made on the bistable stochastic resonance model with small system parameters. An analogue circuit was designed to perform the effect. The effect of signal modulating noise was shown in the analog simulation experiment. The analog experiment was conducted for two sinusoidal signals with different frequencies. The results show that there are a sinusoidal component corresponding to the input sinusoidal signal and a noise component presented as a Wiener process corresponding to the input white noise in the system output. By properly selecting system parameters, the effect of signal modulating noise can be manifested in the system output. |
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| Keywords: | signal modulating noise effect bistable system stochastic resonance analog simulation |
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