基于小波变换的异步电机的故障诊断，本文采用三层小波包分析，诊断效果较好-Wavelet-based fault diagnosis of induction motors, this paper, three wavelet packet analysis, diagnosis, better

matlab绘图程序，绘制电机的频谱图，在分析电机故障时用-spectrum matlab drawing program, drawing motor used in the analysis of motor failure