电测与仪表2017，Vol.54Issue(5)：113-118,6.
基于小波变换的无刷直流电机逆变器故障诊断
Study on fault diagnosis of brushless DC motor inverter based on wavelet transform
摘要
Abstract
Fault diagnosis is the premise of realizing the fauh tolerant control of motor.In order to improve the reliability of the motor system,and solve the open circuit fault of the inverter power tube in brushless DC motor driving system,the wavelet transform is proposed in this paper,which is adopted to analyze the three phase current signal of the motor.For the purpose of obtaining fault information quickly,the product of three or more layers of wavelet transform detail signals as detection signal is presented,which can locate the fault point precisely.The energy of the low frequency wavelet signal is regarded as the extraction feature to identify the fault of inverter power tube.This method has the advantage of high reliability and a simple algorithm for extracting the characteristic signal.The results of simulation and experiment show the effectiveness and accuracy of the proposed method.关键词
无刷直流电机/逆变器/小波分析/故障诊断Key words
brushless DC motor/inverter/wavelet analysis/fault diagnosis分类
信息技术与安全科学引用本文复制引用
杨欣荣,蒋林,王婧林,王蕾..基于小波变换的无刷直流电机逆变器故障诊断[J].电测与仪表,2017,54(5):113-118,6.基金项目
国家自然科学基金(51204139) （51204139）
四川省教育厅科技项目(13ZB0199) （13ZB0199）
