计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2010年
1期
211-214
,共4页
数字电路%故障诊断%神经网络%小波分析
數字電路%故障診斷%神經網絡%小波分析
수자전로%고장진단%신경망락%소파분석
digital circuits%fault diagnosis%neural networks%wavelet analysis
利用小波变换与神经网络相结合的方法,采用"能量一故障"特征提取方法和BP算法,提出了一种基于小渡分析和神经网络的数字电路瞬态电流I_(DDT)故障诊断方法.该方法首先采样电源到地的瞬态电流I_(DDT),然后通过小波分析提取电路的故障特征向量,最后输入到神经网络进行故障诊断.经过计算机软件对故障进行仿真,结果表明使用小波一神经网络的数字电路I_(DDT)方法行之有效.
利用小波變換與神經網絡相結閤的方法,採用"能量一故障"特徵提取方法和BP算法,提齣瞭一種基于小渡分析和神經網絡的數字電路瞬態電流I_(DDT)故障診斷方法.該方法首先採樣電源到地的瞬態電流I_(DDT),然後通過小波分析提取電路的故障特徵嚮量,最後輸入到神經網絡進行故障診斷.經過計算機軟件對故障進行倣真,結果錶明使用小波一神經網絡的數字電路I_(DDT)方法行之有效.
이용소파변환여신경망락상결합적방법,채용"능량일고장"특정제취방법화BP산법,제출료일충기우소도분석화신경망락적수자전로순태전류I_(DDT)고장진단방법.해방법수선채양전원도지적순태전류I_(DDT),연후통과소파분석제취전로적고장특정향량,최후수입도신경망락진행고장진단.경과계산궤연건대고장진행방진,결과표명사용소파일신경망락적수자전로I_(DDT)방법행지유효.
A method of fault diagnosis for digital circuits of transient power supply current(I_(DDT))based on the combination of neural network with wavelet transformation is presented,using the method of drawing energy-fault feature and BP algorithm.The proposed method samples transient current of circuit,then USeS wavelet analysis as a tool to extract the best optimal feature information.The feature is applied to neural network and the fault is detected and localized.The simulation result of flault shows that the proposed method can classify the faults well.
