电机故障诊断中电流信号采集的研究

Research on the Current Signal Acquisition for Diagnosis on Asynchronous Motors

对异步电机常见故障及电机故障诊断中常用的定子电流频谱分析法作了简单介绍,分析了常见中小型异步电机故障特征频率的分布范围,以及不同的电机故障对频率分辨率的不同要求,并提出用双采样频率对电机的电流信号进行采样的新方法。

This paper first simply introduces the universal faults of an asynchronous motor and the frequentlyused methods of diagnosis analyzing the spectrum of the stator inductive current, and then states the distributing range of the characteritic frequency of fault and the different resolution of frequency required to diagnose. Finaly, this paper gives a new method of current signal acquisition of double sampling of frequency.