| 混沌弱信号检测法在齿轮裂纹声发射检测中的应用 |
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| 引用本文： | 姚晓山,张永祥,明廷锋,刘诗华.混沌弱信号检测法在齿轮裂纹声发射检测中的应用[J].武汉理工大学学报(交通科学与工程版),2009,33(2). |
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| 作者姓名： | 姚晓山 张永祥 明廷锋 刘诗华 |
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| 作者单位： | 1. 海军工程大学船舶与动力学院,武汉,430033;空军雷达学院军通系,武汉,430019
2. 海军工程大学船舶与动力学院,武汉,430033 |
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| 摘 要： | 分析了Duffing振子的间歇混沌发生原理.研究了基于Duffing方程间歇混沌理论的混沌弱信号检测法,该方法对周期小信号具有敏感特性,能够在强噪声环境下实现对微弱周期小信号的检测.分别采用频谱分析法和混沌弱信号检测法对齿轮裂纹声发射实验数据进行检测,结果表明混沌弱信号检测法具有更高的检测精度和更强的抗干扰能力.
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| 关 键 词： | Duffing振子 间歇混沌 声发射 齿轮裂纹 监测 |
Application of Chaos-based Weak Signal Detection Approach to the Acoustic Emission Signal of Gear Crack via Duffing Oscillator |
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| Yao Xiaoshan,Zhang Yongxiang,Ming Tingfeng,Liu shihua.Application of Chaos-based Weak Signal Detection Approach to the Acoustic Emission Signal of Gear Crack via Duffing Oscillator[J].journal of wuhan university of technology(transportation science&engineering),2009,33(2). |
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| Authors: | Yao Xiaoshan Zhang Yongxiang Ming Tingfeng Liu shihua |
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| Institution: | College of Naval Architecture and Power;Naval University of Engineering;Wuhan 430033;Air Force Academy of Radar;Department of General Ordnance Equipment;Wuhan 430019 |
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| Abstract: | The paper introduces the principle of duffing oscillator and intermittent chaos,studies the detection method of weak signal based on chaotic duffing equation.The chaotic oscillator is sensitive to faint periodic small signal,and can detect the faint periodic small signal in strong noise background.The duffing oscillator detection approach and frequency spectrum method are compared through analyzing the AE signal of gear crack,the result indicates duffing ocillators detecting method has superiority in detect... |
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| Keywords: | Duffing oscillator intermittent chaos acoustic emission gear crack monitoring |
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