• CN:11-2187/TH
  • ISSN:0577-6686

›› 1997, Vol. 33 ›› Issue (3): 76-79.

• 论文 • 上一篇    下一篇

小波分析及其在机械诊断中的应用

陈涛;屈梁生;耿中行   

  1. 西安交通大学机械诊断与控制学研究所
  • 发布日期:1997-05-01

WAVELET ANALYSIS AND ITS APPLICATION IN MACHINERY DIAGNOSIS

Chen Tao;Qu Liangsheng;Geng Zhongxing   

  1. Xi 'an Jiaotong University
  • Published:1997-05-01

摘要: 从工程应用的角度提出了对于小波分析的理解,给出了小波函数和尺度函数之间的关系和信号分解的小波变换。利用小波包算法分析了两种典型的机械故障。结果显示,小波包的分析方法较传统的窗口傅里叶变换和维格纳分布更加有效。

关键词: 故障诊断, 机械, 小波包, 小波分析

Abstract: To understand the wavelet analysis is put forward from engineering application. The relationship between wavelet function and scale function, the wavelet transform and the signal decomposition are given. Furthermore, we take advantage of the algorithm of wavelet packet to analyze two kinds of typical mechanical faults. Results show the wavelet packet is a more efficient method in comparison with windowed fourier transform (WFT) and winger distribution (WD) in the field of machinery diagnosis.

Key words: Fault diagnosis, Machinery Wavelet analysis, Wavelet packet

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