Chaos Characteristics of Reciprocating Membrane Pump’s Faults Based on Wavelet Packets Analysis

China Mechanical Engineering ›› 2011, Vol. 22 ›› Issue (11): 1323-1326.

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Chaos Characteristics of Reciprocating Membrane Pump’s Faults Based on Wavelet Packets Analysis

Shi Lichen;Duan Zhishan

Xi’an University of Architecture and Technology, Xi’an, 710055

Online:2011-06-10 Published:2011-06-17
Supported by:

Shanxi Provincial Specialized Science Research Program of Ministry of Education of China（No. 2010JK619）;
Specialized Research Fund for the Doctoral Program of Higher Education of China（No. 20070703003）

基于小波包分析的隔膜泵故障状态混沌特性研究

史丽晨;段志善

西安建筑科技大学，西安，710055

基金资助:
陕西省教育厅专项科研计划资助项目(2010JK619)；高等学校博士学科点专项科研基金资助项目(20070703003)
Shanxi Provincial Specialized Science Research Program of Ministry of Education of China（No. 2010JK619）;
Specialized Research Fund for the Doctoral Program of Higher Education of China（No. 20070703003）

Abstract

Abstract:

The chaos characteristics of the reciprocating membrane pump’s typical faults were studied with wavelet packet technology. The largest Lyapunov exponents of different status were calculated. A new parameter, the relative growth rate of the largest Lyapunove exponent, was set up.The results show that,the system has different largest Lyapunov exponents when wearing places are different.Wearing faults’ characteristic frequency bands are high frequency ones, while the pressure’s are low and middle frequency ones. 

Key words:

fault diagnosis, wavelet packet, chaos, largest Lyapunov exponent, reciprocating membrane pump

摘要：

针对往复式活塞隔膜泵的不同典型故障，将小波包重构技术和混沌理论相结合，分别计算了不同状况时系统的最大Lyapunov指数，定义了最大Lyapunov指数增长率并将其作为特征参数。研究结果表明：动力端不同磨损处的最大Lyapunov指数处于不同的数量级;隔膜泵磨损故障的特征频带是高频段，而压力波动的特征频段是中低频段。



关键词:

故障诊断, 小波包分析, 混沌, 最大Lyapunov指数, 往复式活塞隔膜泵

CLC Number:

SHI Li-Chen, DUAN Zhi-Shan.

Chaos Characteristics of Reciprocating Membrane Pump’s Faults Based on Wavelet Packets Analysis

[J]. China Mechanical Engineering, 2011, 22(11): 1323-1326.

史丽晨, 段志善.

基于小波包分析的隔膜泵故障状态混沌特性研究

[J]. 中国机械工程, 2011, 22(11): 1323-1326.

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Chaos Characteristics of Reciprocating Membrane Pump’s Faults Based on Wavelet Packets Analysis

基于小波包分析的隔膜泵故障状态混沌特性研究

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