| 对偶树复小波阈值降噪法及在机械故障诊断中的应用 |
| |
| 引用本文： | 邱爱中.对偶树复小波阈值降噪法及在机械故障诊断中的应用[J].机械传动,2011,35(9):58-61. |
| |
| 作者姓名： | 邱爱中 |
| |
| 作者单位： | 郑州师范学院物理系,河南郑州,450044 |
| |
| 基金项目： | 河南省科技攻关项目(112102210128); 河南省教育厅自然科学研究项目(2011C510005) |
| |
| 摘 要： | 为有效提取强噪声背景下微弱故障信号,提出了一种基于对偶树复小波的阈值降噪方法及其小波滤波器的设计原则,将其应用于机械故障诊断,取得了较好效果.阐述了对偶树复小波变换滤波器的设计要求和对偶树复小波阈值降噪法的实施步骤.该法充分利用了对偶树复小波变换的平移不变性的优良特性,试验表明:此法可以获得比常规的离散小波降噪更高的信...
|
| 关 键 词： | 对偶树复小波 滤波器 降噪 故障诊断 弱信号提取 |
A New Denoising Method of DT-CWT and Its Application in Mechanical Fault Diagnosis |
| |
| Qiu Aizhong.A New Denoising Method of DT-CWT and Its Application in Mechanical Fault Diagnosis[J].Journal of Mechanical Transmission,2011,35(9):58-61. |
| |
| Authors: | Qiu Aizhong |
| |
| Affiliation: | Qiu Aizhong(Department of Physics,Zhengzhou Normal University,Zhengzhou 450044,China) |
| |
| Abstract: | In order to reduce the noise,a denoising method of DT-CWT(Dual-tree complex wavelet transform) is proposed to extract the weak failure information in machinery vibration signals to diagnose mechanical fault.The dual-tree complex wavelet transform filter design principles are described.The presented method can not only avoid gibbs phenomen,but also obtain higher signal-to-noise ratio(SNR) than the common methods based on orthonormal discrete wavelet transform,because of improving asymptotic optimality of shi... |
| |
| Keywords: | Dual-tree complex wavelet Filter Desoising Fault diagnosis Extracting weak signal |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
