旋转机械振动信号的循环谱分析

Circulation Spectrum Analysis of Rotating Machinery Vibration Signal

依据循环平稳理论,建立了具有旋转特性的机械设备的信号模型,对其振动信号的二阶循环统计量的解调性能进行了分析。指出利用循环谱图及其轮廓图可以有效识地从复杂的机械振动信号中提取调制信号及载波信号的频率特征,为设备的故障识别及故障定位提供了依据。

according to the circular balance theory, the signal model of rotating mechanical equipment was set up and its decoding performance of vibrating signal was analyzed. It is pointed that the circulating spectrum and outline can effectively extract the frequency characteristics and provides basis for the equipment malfunction recognition and location.