摘要
本文论述了电机振动信号的测量与抽样方法,通过对量化的振动信号样本集做快速富里叶变换运算,得到电机振动信号的数字谱图.这种数字谱分析可以在普通数字电子计算机上实现.文中给出了一台同步发电机振动信号的样本集和对其进行1024点FFT运算的功率谱分析结果,同时对截断误差进行了必要的分析.
The paper deals with the method to get the sample of vibration signal of the electric machines, and the digital spectrum of the vibration signal is calculated with FFT. As an example, the calculating results of vibration signal of a synchronous generator are given with 1024 point FFT, and it has done essential analysis to cut of error.
关键词
电机
振动
谱分析
信号数字谱
digital signals
spectrum analysis
electric machines
vibration
