一种基于小波的双层滤波算法在变速器故障信号去噪中的应用
文献类型：会议论文
| 作者 | 董彦辉; 陈书宏 ; 尚文利
|
| 出版日期 | 2008 |
| 会议名称 | 7th World Congress on Intelligent Control and Automation |
| 会议日期 | June 25-27, 2008 |
| 会议地点 | Chongqing, China |
| 关键词 | 双层滤波 故障诊断 小波阈值去噪 自适应小波去噪 |
| 页码 | 1917-1920 |
| 其他题名 | A Double Filtering Algorithm Based on Wavelet and Application in De-noising of Gearbox Fault Signal |
| 中文摘要 | 本文结合自适应小波变换滤波去噪方法与小波阈值去噪方法，提出了一种可用于变速器故障振动信号去噪的双层滤波去噪算法。该算法的滤波过程分为两层，第一层滤波中，对morlet 小波的尺度因子α在峰态极值指标下进行了优化选择，然后来用优化了尺度因子α的morlet 小波，对信号进行自适应小波变换滤波处理，这样可以最大化地保留信一号中的冲击成分；第二层滤波采用经典的小波阈值去噪算法对信号进行二次去噪，由于小波阈值去噪法在最小均方误差下是近似最优的，所以它可以有效地降低信号的整体噪声。最后，用该算法对一包含大量冲击成分的变速器齿轮故障振动信号进行了去噪实验，实验的结果表明，该算法对含有大量冲击成分的变速器故障振动信一号的去噪十分有效。 |
| 英文摘要 | In this paper, a double filtering algorithm is proposed for de-noising of gearbox malfunction vibration signal, which is produced by combining adaptive wavelet transform de-noising and wavelet threshold de-noising. The de-noising process of this algorithm consist of two phases, in first phase, a optimal wavelet is obtained by making its scale factor a optimized, the optimal a is obtained while the kurtosis of the wavelet transformed signal reaches maximum, and then, the malfunction signal is filtered by wavelet transform with the optimal wavelet. In this way, impactive component of the signal will be reserved farthest. In the second phase, the classical wavelet threshold de-noising algorithm is used to de-noise secondly. Because the wavelet threshold de-noising method is approximately optimal in minimum mean square error, so it can effectively lower the overall noise of the signal. Finally, a experiment is carried out. The algorithm is used to de-noise for a transmission gearbox vibration signal. The transmission have one gear broken, the vibration signal contains strong noise. Experiment results show that the algorithm is effective for de-noising of transmission gearbox failure vibration signal. |
| 收录类别 | EI ; CPCI（ISTP） |
| 产权排序 | 1 |
| 会议主办者 | Chongqing Univ, Chongqing Inst Technol, Chongqing Univ Sci & Technol, Xihua Univ, SW Univ Sci & Technol, IEEE Robot & Automat Soc, IEEE Control Syst Soc, Beijing Chapter, Chinese Assoc Automat, Chinese Assoc Artificial Intell, Natl Nat Sci Fdn, Chongqing Municipal Sci & Technol Comm, Chongqing Municipal Assoc Sci & Technol, KC Wong Educ Fdn |
| 会议录 | 2008 7TH WORLD CONGRESS ON INTELLIGENT CONTROL AND AUTOMATION, VOLS 1-23
 |
| 会议录出版者 | IEEE |
| 会议录出版地 | NEW YORK |
| 语种 | 中文 |
| ISBN号 | 978-1-4244-2113-8 |
| WOS记录号 | WOS:000259965701138 |
| 源URL | [http://ir.sia.cn/handle/173321/7710]  |
| 专题 | 沈阳自动化研究所_自动化系统研究室 |
| 推荐引用方式 GB/T 7714 | 董彦辉,陈书宏,尚文利. 一种基于小波的双层滤波算法在变速器故障信号去噪中的应用[C]. 见:7th World Congress on Intelligent Control and Automation. Chongqing, China. June 25-27, 2008. |
入库方式： OAI收割
来源：沈阳自动化研究所
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