| 基于Duffing振子的弱正弦信号检测的改进 |
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| 引用本文： | 任志玲,刘银报,史旭鹏.基于Duffing振子的弱正弦信号检测的改进[J].计算机测量与控制,2011,19(6). |
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| 作者姓名： | 任志玲 刘银报 史旭鹏 |
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| 作者单位： | 1. 辽宁工程技术大学电气与控制工程学院,辽宁葫芦岛,125105
2. 辽河油田物资公司,辽宁盘锦,124010 |
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| 基金项目： | 辽宁省创新团队科研项目(2008T078) |
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| 摘 要： | 提出了一种基于Duffing混沌振子弱正弦信号的检测方法;为了能够检测更加微弱正弦信号的频率,对Duffing系统相关参数加以调整,使系统阈值与微弱正弦信号幅值大致相当;采用Duffing振子阵列法检测微弱正弦信号频率,在检测精度较高的前提下,缩小振子间频率比,增加振子数量;实验仿真表明可以检测幅值最低为0.002V的弱正弦信号。
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| 关 键 词： | Duffing系统 振子 微弱信号检测 |
Improvement of Weak Sinusoidal Signal Detecting Based on Duffing Oscillator |
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| Ren Zhiling,Liu Yinbao,Shi Xupeng.Improvement of Weak Sinusoidal Signal Detecting Based on Duffing Oscillator[J].Computer Measurement & Control,2011,19(6). |
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| Authors: | Ren Zhiling Liu Yinbao Shi Xupeng |
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| Affiliation: | Ren Zhiling1,Liu Yinbao1,Shi Xupeng2(1.College of Electrical & Control Engineering,Liaoning Technical University,Huludao 125105,China,2.Petrochina Liaohe Oilfield Materials Company,Panjin 124010,China) |
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| Abstract: | A new algorithm is proposed for weak sinusoidal signal detecting based on Duffing chaotic oscillator.In order to detect frequency of weaker sinusoidal signal,we adjust the parameters of Duffing system to make the threshold of Duffing system and the amplitude of weak sinusoidal signal at the same level.Furthermore,we make the threshold of Duffing system small by changing relative parameters of Duffing system,reduce the oscillator frequency ratio among oscillators,and increase the number of oscillators to get... |
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| Keywords: | Duffing system oscillator weak signal detection |
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