| 基于小波奇异性的故障诊断 |
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| 引用本文： | 刘伯鸿. 基于小波奇异性的故障诊断[J]. 现代电子技术, 2006, 29(24): 92-93 |
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| 作者姓名： | 刘伯鸿 |
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| 作者单位： | 兰州交通大学,信息与电气工程学院,甘肃,兰州,730070 |
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| 摘 要： | 小波变换具有良好的时-频特性,能在不同尺度上分析和处理信号的各种成分,使信号的奇点、突变点放大,提高信号的分辨率、信噪比。因此可以有效地用于电力电子系统故障诊断。在介绍小波变换信号奇异性检测原理的基础上,对电力电子系统奇异性故障信号使用Matlab进行仿真。仿真结果表明,小波变换在故障诊断中有着广泛的应用前景。
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| 关 键 词： | 小波变换 故障诊断 奇异点 Matlab |
| 文章编号： | 1004-373X（2006）24-092-02 |
| 收稿时间： | 2006-05-30 |
| 修稿时间： | 2006-05-30 |
Fault Diagnosis Based on Wavelet Singularity |
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| LIU Bohong. Fault Diagnosis Based on Wavelet Singularity[J]. Modern Electronic Technique, 2006, 29(24): 92-93 |
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| Authors: | LIU Bohong |
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| Affiliation: | School of Information and Electrical Engineering, Lanahou Jiaotong University, Lanzhou, 730070, China |
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| Abstract: | The wavelet transformation has the good timefrequency characteristic,all sorts of frequencies are analyzed and processed for various scales.The odd and break points of signals are amplified and the resolving power and SNR are improved.So it can be availably used for the fault diagnosis in the electrical and electronic system.The signal singularity is analyzed by Matlab emulation of application in fault diagnosis of the electrical and electronic system based on wavelet transformation.The outcome of emulation shows that the prospect of wavelet transformation appliance to fault diagnosis is wide. |
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| Keywords: | wavelet transform fault diagnosis singular point Maltab |
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