基于混沌理论的碰摩声发射特征分析与源定位

中国机械工程 ›› 2011, Vol. 22 ›› Issue (9): 1013-1017.

基于混沌理论的碰摩声发射特征分析与源定位

成新民1;胡峰2;邓艾东2;赵力2

1.湖州师范学院，湖州，313000

2.东南大学火电机组振动国家工程研究中心，南京，210096

出版日期:2011-05-10 发布日期:2011-05-17
基金资助:
国家自然科学基金资助项目(60472058，60975017，51075068)；江苏省自然科学基金资助项目(BK2008291)
National Natural Science Foundation of China（No. 60472058，60975017，51075068）;
Jiangsu Provincial Natural Science Foundation of China（No. BK2008291）

Characteristic Analysis and Localization of Acoustic Emission Source Based on Chaos Theory

Cheng Xinmin1;Hu Feng2;Deng Aidong2;Zhao Li2

1.Huzhou Teachers School,Huzhou,Zhejiang,313000

2.National Engineering Research Center of Turbo-generator Vibration，Southeast University，Nanjing,210096

Online:2011-05-10 Published:2011-05-17
Supported by:

National Natural Science Foundation of China（No. 60472058，60975017，51075068）;
Jiangsu Provincial Natural Science Foundation of China（No. BK2008291）

摘要/Abstract

摘要：

根据混沌信号处理理论，研究分析了关联维数、最大Lyapunov指数和Kolmogorov熵等转子碰摩声发射源的非线性动力学特征量的特性。并将这些特征量作为神经网络的输入，研究了碰摩声发射源的定位问题。实验结果表明，该方法能较好地解决碰摩声发射源定位问题，为转子碰摩故障诊断提供依据。

关键词:

声发射;定位, 碰摩, 混沌, 神经网络

Abstract:

A nonlinear dynamic analysis of the acoustic emission (AE) signals in rotor rubbing was conducted based on the chaotic signal processing technique and such new features of nonlinear dynamics as correlation dimension, largest Lyapunov index and the Kolmogorov entropy were proposed herein. Simulation results reveal the neural network model employing these new features improves the localization efficiency of the AE source and contributes to the diagnosis of rotor rub-impact faults.

Key words:

acoustic emission, localization, rub-impact, chaos, neural network

中图分类号:

TH165.3

成新民, 胡峰, 邓艾东, 赵力.

基于混沌理论的碰摩声发射特征分析与源定位

[J]. 中国机械工程, 2011, 22(9): 1013-1017.

CHENG Xin-Min, HU Feng, DENG Ai-Dong, DIAO Li.

Characteristic Analysis and Localization of Acoustic Emission Source Based on Chaos Theory

[J]. China Mechanical Engineering, 2011, 22(9): 1013-1017.

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