基于Hilbert-Huang变换的切削颤振识别

贾广飞;吴波;胡友民

振动与冲击 ›› 2014, Vol. 33 ›› Issue (22) : 188-192.

PDF(1684 KB)
PDF(1684 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (22) : 188-192.
论文

基于Hilbert-Huang变换的切削颤振识别

  • 贾广飞 1,2,吴波 1,胡友民 1
作者信息 +

Cutting chatter recognition based on Hilbert-Huang Transform

  • JIA Guang-fei 1,2 WU Bo 1 HU You-min 1
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摘要

针对切削颤振信号的非线性、非平稳的特征,提出了基于Hilbert-Huang变换的切削颤振识别方法。该方法通过对颤振信号进行经验模态分解(EMD)得到一系列本征模函数,筛选出对颤振敏感的本征模函数,并对其进行带通滤波,再对滤波后的本征模函数作Hilbert变换,绘制Hilbert谱,最后提取Hilbert谱幅值的标准差进行颤振的定量识别。仿真振动信号和实测振动信号验证了该方法的有效性。为了证明该方法的优势,提供了小波包分解方法作对比。

Abstract

Considering the nonlinear and non-stationary features of cutting chatter signals, this paper proposed a chatter recognition method based on Hilbert-Huang transform. By this method, firstly, a chatter signal is decomposed into a series of intrinsic mode functions (IMFs) by empirical mode decomposition (EMD), and then the IMF with rich chatter information is selected and filtered by a band-pass filter, and then the Hilbert spectrum of the filtered IMF is obtained by Hilbert transform, lastly, cutting chatter is quantitatively recognized by the standard deviation of amplitude of Hilbert spectrum. The effectiveness of the proposed method was validated by simulated and actual vibration signals. For comparison, the method by wavelet packet decomposition and wavelet spectrum analysis was also provided.


关键词

Hilbert-Huang变换 / 切削颤振 / 经验模态分解 (EMD)

Key words

Hilbert-Huang transform / cutting chatter / empirical mode decomposition (EMD)

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导出引用
贾广飞;吴波;胡友民 . 基于Hilbert-Huang变换的切削颤振识别[J]. 振动与冲击, 2014, 33(22): 188-192
JIA Guang-fei;WU Bo HU You-min . Cutting chatter recognition based on Hilbert-Huang Transform[J]. Journal of Vibration and Shock, 2014, 33(22): 188-192

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