基于小波变换的包装机械故障诊断方法的研究

Aanlyzing Defect on the Packaging Machine Based on Wavelet Transform

文中介绍了小波分解在包装机械故障诊断中的优点 ,并通过对包装机械振动信号特征进行分析 ,指出该类信号用频谱分析的方法不能得到有效的特征。由于小波分析具有传统频谱分析方法所没有的时—频分析特征 ,通过小波逼近系数能得到机组实际振动的大小 ,从而准确诊断出故障 。

The advantage of wavelet transform in described,The feature of vibration signal of packaging machine vibration signal was analyzed And it is pointed out in this paper that the defect on the packaging machine will affect the real vibration values in some cases So it is necessary to estimate the affection of the defect on the vibration values And the properties of the defect on wavelet coefficient is presented out Also some judgements rules for diagnosing the defect through the wavelet coeffcients of vibration were given The results are supported by an example