|本期目录/Table of Contents|

基于势函数参数的随机共振性能研究(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2017年2期
页码:
114-120
栏目:
精密测量
出版日期:
2017-03-15

文章信息/Info

Title:
Stochastic Resonance Based on Potential Function Parameter
文章编号:
1672-6030(2017)02-0114-07
作者:
李一博 王会芳 张博林
精密测试技术及仪器国家重点实验室(天津大学), 天津300072
Author(s):
Li Yibo Wang Huifang Zhang Bolin
State Key Laboratory of Precision Measuring Technology and Instruments (Tianjin University), Tianjin 300072, China
关键词:
势函数参数 随机共振 阻尼比
Keywords:
potential function parameter stochastic resonance damping ratio
分类号:
O324
DOI:
10.13494/j.npe.20150136
文献标识码:
A
摘要:
以势阱函数为研究对象,提出了势函数参数的概念,阐述了不同势函数参数下系统随机共振机理,并讨论了过阻尼系统和Duffing振子系统在不同势函数参数下的随机共振性能对比.实验表明,在满足一定参数条件下,提升系统势函数参数将会提升系统输出的最大幅值增益以及最大输出信噪比,与传统一元四次势函数下的随机共振系统相比,性能提升得非常明显;Duffing振子系统相比于过阻尼系统,其调节范围更宽.联合调节阻尼比与势函数参数可以使信号达到更佳的随机共振状态,为信号的后续处理奠定基础.
Abstract:
Based on the study of potential well function, the potential function parameter is put foward in this paper. The mechanism of stochastic resonance system and the comparison of overdamped system with Duffing oscillator system under various potential function parameters are discussed. Experiment shows that, under certain parameter condition, the maximum amplitude gain and the output signal-to-noise ratio will increase with the increase of system potential function parameter value. Compared with the traditional stochastic resonance system using quartic potential function of one variable, the improvement becomes more obvious. In addition, compared with the overdamped system, Duffing oscillator shows a larger range of adjustment. Combining the adjustment of damping parameter with the potential function parameter, Duffing oscillator will lead to an appropriate stochastic resonance state, laying good foundation for the subsequent signal processing.

参考文献/References

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备注/Memo

备注/Memo:
收稿日期: 2016-12-05. 基金项目: 天津市自然科学基金资助项目(13JCYBJC18000). 作者简介: 李一博(1973—),男,博士,副教授. 通讯作者: 王会芳,硕士,wanghuifang103@126.com.
更新日期/Last Update: 2017-12-20