结合空间域矢谱分析和小波包变换技术,提出了旋转机械空间域全信息小波包变换方法。它融合了转子同截面3通道图谱中各自存在的振动分量,能全面、准确地反映转子发生故障时的瞬态过程特征量变化。工程实践应用表明:旋转机械空间域金信息小波包变换对于旋转机械的故障诊断,是一种新的、较为实用的信息融合方法。
The wavelet - packet - transform of the vector- spectrum in space - domain is brought forward based on the vector - spectrum in space - domain and the wavelet - packet - transform. It can fuse the vibration information of the three channels fixed at a section of the rotor and reflect exactly the change of the characteristic in the transient processes. Engineering practice indicates that the wavelet- packet - transform of the vector - spectrum in space- domain is a new and usable method for fault diagnosis of the rotary machinery.