瞬频特征的谐波小波域提取与应用

柏林;董鹏飞;刘小峰

振动与冲击 ›› 2010, Vol. 29 ›› Issue (8) : 131-135,.

PDF(2092 KB)
PDF(2092 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (8) : 131-135,.
论文

瞬频特征的谐波小波域提取与应用

  • 柏林;董鹏飞;刘小峰
作者信息 +

Instantaneous frequency extraction in harmonic wavelet domain

  • BO lin;DONG Peng-fei;LIU Xiao-feng
Author information +
文章历史 +

摘要

为了能精确的提取出复杂信号中特征分量的瞬频特征,提出了谐小波域内的分量瞬频估计方法。该方法首先,在分析谐波小波变换的基本原理及其优良特性的基础上,对谐波小波进行加窗光滑处理,改善了谐波小波的时域衰减特性。然后,针对在传统瞬频估计方法的不足之出,将线形回归、自适应滤波、曲线平滑、重采样等方法应用到瞬时相位函数的处理中,提高了瞬时频率特征的提取精度。

Abstract

Abstract:In order to extract the instantaneous frequency (IF) of feature component from complex multi-components signals, the component IF extracting method in harmonic wavelet domain was Based on the analysis of harmonic wavelet transform principle and in light`of its excellent properties, the frequency spectrum discontinuity point of harmonic wavelet was smoothed by adding certain windows and the Aiming at the disadvvantages of universal IF estimation, the techiques of resampling were app;oed in the process of deriving instantaneous phase. The sinylation results of synthetic and gearbox fault signals were presented to of verify the feasibility and validity of the method proposed.

关键词

瞬频特征 / 谐波小波包 / 相位估计 / 故障诊断

Key words

instantaneous frequency characyeristics / harmonic wavelet packet / phase estimation / fault diagnosis

引用本文

导出引用
柏林;董鹏飞;刘小峰. 瞬频特征的谐波小波域提取与应用[J]. 振动与冲击, 2010, 29(8): 131-135,
BO lin;DONG Peng-fei;LIU Xiao-feng. Instantaneous frequency extraction in harmonic wavelet domain[J]. Journal of Vibration and Shock, 2010, 29(8): 131-135,

PDF(2092 KB)

Accesses

Citation

Detail

段落导航
相关文章

/