大电机技术
大電機技術
대전궤기술
LARGE ELECTRIC MACHINE AND HYDRAULIC TURBINE
2013年
1期
15-18
,共4页
许允之%韩丽%方永丽%严加明%曹海洋
許允之%韓麗%方永麗%嚴加明%曹海洋
허윤지%한려%방영려%엄가명%조해양
电机%故障诊断%神经网络%小波分析%MATLAB
電機%故障診斷%神經網絡%小波分析%MATLAB
전궤%고장진단%신경망락%소파분석%MATLAB
motor%fault diagnosis%neural network%wavelet analysis%MATLAB
本文研究电机转子断条故障的诊断机理,选取小波包分析作为信号处理的前置手段,得到输出神经网络的特征向量.神经网络通过学习训练得到诊断结果,将小波的局部特性和神经网络的自学习特性结合起来,使诊断系统具有自适应分辨性和良好的容错性.本研究已经应用于电机故障诊断教学实验,针对特征向量提取方法实现了故障的诊断和区分.
本文研究電機轉子斷條故障的診斷機理,選取小波包分析作為信號處理的前置手段,得到輸齣神經網絡的特徵嚮量.神經網絡通過學習訓練得到診斷結果,將小波的跼部特性和神經網絡的自學習特性結閤起來,使診斷繫統具有自適應分辨性和良好的容錯性.本研究已經應用于電機故障診斷教學實驗,針對特徵嚮量提取方法實現瞭故障的診斷和區分.
본문연구전궤전자단조고장적진단궤리,선취소파포분석작위신호처리적전치수단,득도수출신경망락적특정향량.신경망락통과학습훈련득도진단결과,장소파적국부특성화신경망락적자학습특성결합기래,사진단계통구유자괄응분변성화량호적용착성.본연구이경응용우전궤고장진단교학실험,침대특정향량제취방법실현료고장적진단화구분.
This paper is concerned with fault diagnosis mechanism of broken rotor bars, choosing Wavelet Packet Analysis as the pre-positive means to get the eigenvectors of output neutral network. Neutral network, through learning and training, got the diagnosis results. By combining neural-network’s self-study specific property with wavelets’ partial specific property, it possessed self-suitable distinguish and good tolerance specific property. This research has been applied in teaching experiments of motor fault diagnosis, and feature extraction made fault diagnosis realized and the fault can be distinguished as well.