| 基于小波包变换相关性的信号降噪方法及齿轮故障诊断 |
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| 引用本文： | 孔德顺,申永军,张光明.基于小波包变换相关性的信号降噪方法及齿轮故障诊断[J].石家庄铁道学院学报,2008,21(1):55-60. |
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| 作者姓名： | 孔德顺 申永军 张光明 |
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| 作者单位： | 石家庄铁道学院机械工程分院,河北石家庄050043 |
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| 基金项目： | 国家自然科学基金
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河北省自然科学基金 |
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| 摘 要： | 介绍了小波包变换的基本思想，将新型小波包变换滤波器与信号重采样结合，提出了一种新的小波包降噪方法，研究了该方法的降噪效果，同时比较小波包直接降噪和小波包重构滤波器的降噪效果。将该方法用于齿轮箱的故障诊断，结果表明，该方法能够有效识别齿轮箱中的齿轮典型故障。
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| 关 键 词： | 小波包变换 齿轮 故障诊断 降噪 相关性 |
| 文章编号： | 1674-0300(2008)01-0055-06 |
| 修稿时间： | 2007年12月3日 |
De-noising Method Based Correlativity of Wavelet Packet Transform and Application in Fault Diagnosis of Gear-box |
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| Kong Deshun,Shen Yongjun,Zhang Guangming.De-noising Method Based Correlativity of Wavelet Packet Transform and Application in Fault Diagnosis of Gear-box[J].Journal of Shijiazhuang Railway Institute,2008,21(1):55-60. |
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| Authors: | Kong Deshun Shen Yongjun Zhang Guangming |
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| Institution: | (School of Mechanical Engineering, Shijiazhuang Railway Institute, Shijiazhuang 050043, China) |
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| Abstract: | The basic theory of wavelet packet transform is first introduced, and an improved de-noising method based on the correlativity of wavelet packet transform is presented that has combined a new type of filter with re-sample of signals. Then the de-noising results are researched by simulated signals, and the result of direct wavelet packet de-noising is compared with wavelet packet-filter de-noising. At last this new method is applied to analyze the measured signal from gear-box and the result shows this method could diagnose the fault information under strong noise. |
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| Keywords: | wavelet packet transform gear fault diagnosis de-noise correlativity |
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