| 一种新的感应电动机转子断条故障检测方法 |
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| 引用本文： | 汪凯,丁皓,白明,王兆霞,李宁宁,赵小冰.一种新的感应电动机转子断条故障检测方法[J].天津理工大学学报,2010,26(6). |
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| 作者姓名： | 汪凯 丁皓 白明 王兆霞 李宁宁 赵小冰 |
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| 作者单位： | 1. 天津理工大学,电子信息工程学院,天津,300384
2. 天津大学,精密仪器与光电子工程学院,天津,300072 |
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| 摘 要： | 该文提出一种基于Hilbert模量频谱分析的感应电动机转子断条故障诊断的新方法.该方法是将Hilbert变换和小波分析方法相结合,得到解析小波变换,以准确判定负荷波动发生时刻,消除了负荷波动对断条故障特征频率的影响.将Hilbert模量定义成原始信号与其共轭信号的平方和,利用Hilbert模量将原相电流中的基波成分转换成直流成分,将转子断条的故障特征分量——(1-2s)f1转变为频率为的电流分量,解决了相电流频谱分析方法中断条故障特征分量很容易被基波淹没而难以突出故障特征分量的问题.仿真分析表明,该方法能克服传统的电流频谱分析法的缺点,对感应电动机转子断条故障给出正确无误的诊断结果.
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| 关 键 词： | 感应电动机 Hilbert变换 小波分析 转子断条 故障诊断 Hilbert模量 频谱分析 |
A new method of broken-rotor-bar fault detection of induction motors |
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| WANG Kai,DING Hao,BAI Ming,WANG Zhao-xia,LI Ning-ning,ZHAO Xiao-bing.A new method of broken-rotor-bar fault detection of induction motors[J].Journal of Tianjin University of Technology,2010,26(6). |
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| Authors: | WANG Kai DING Hao BAI Ming WANG Zhao-xia LI Ning-ning ZHAO Xiao-bing |
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| Institution: | WANG Kai1,DING Hao2,BAI Ming1,WANG Zhao-xia1,LI Ning-ning1,ZHAO Xiao-bing1(1.School of Electronics Information Engineering,Tianjin University of Technology,Tianjin 300384,China,2.College of Precision Instrument and Opto-Electronics Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | This paper proposes a new fault detection method based on spectrum analysis of Hilbert modulus,which combines Wavelet Transform and Hilbert transform to detect induction broken-rotor-bar faults.Hilbert transform is introduced into Wavelet analysis to obtain analytical results of wavelet transform of the signals.Based on analytical results of wavelet transform,this method calculates the location of fault signature and eliminates the effect of the oscillation.The Hilbert modulus is defined as the sum of the s... |
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| Keywords: | induction motors Hilbert transformation wavelet analysis rotor broken-bar fault fault diagnosis Hilbert modulus spectrum analysis |
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