| 基于小波变换的整流电路故障诊断 |
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| 引用本文： | 徐晓东,蒋新华,余明扬.基于小波变换的整流电路故障诊断[J].兰州工业高等专科学校学报,2006,13(1):13-16. |
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| 作者姓名： | 徐晓东 蒋新华 余明扬 |
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| 作者单位： | 1. 中南大学,信息工程学院,湖南,长沙,410001
2. 福建工程学院,福建,福州,350014 |
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| 摘 要： | 小波变换具有在时域和频域内的局部化特性,对于弱信号的检测非常方便,易于从高信噪比的信号中去除噪声,在故障诊断领域中的信号去噪应用非常广泛.首先介绍了小波变换的基本原理,建立了晶闸管三相桥式全控整流电路的MATLAB仿真模型,并对故障仿真中的含噪信号进行了小波变换去噪,较好地从噪声中分离出了电压故障曲线.
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| 关 键 词： | 小波变换 晶闸管 桥式整流 故障诊断 |
| 文章编号： | 1009-2269(2006)01-0013-04 |
| 收稿时间： | 12 12 2005 12:00AM |
| 修稿时间： | 2005年12月12 |
Fault Diagnosis of Rectifying Circuit Based on Wavelet Transform |
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| XU Xiao-dong,JIANG Xin-hua,YU Ming-yang.Fault Diagnosis of Rectifying Circuit Based on Wavelet Transform[J].Journal of Lanzhou Higher Polytechnical College,2006,13(1):13-16. |
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| Authors: | XU Xiao-dong JIANG Xin-hua YU Ming-yang |
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| Affiliation: | 1. The College of Information Science Engineering of Central South University, Changsha 410001, China; 2. Fujian University of Technology, Fuzhou 350014, China |
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| Abstract: | It is pointed out that wavelet transform(WT) has powerful ability for weak signal detection and denoising with high SNR which helps itself to be used for fault diagnosis widely.The paper reviews the basic principle of wavelet transform.In the end,the model of three-phase bridge all-wave controllable rectifying circuit of thyristor is built and wavelet transform is used for different fault signal detection which has white-noise and harmonic current.The results show that it is very effective in fault diagnosis. |
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| Keywords: | wavelet transform thyristor bridge rectifying circuit fault diagnosis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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