| 基于HHT变换的超光滑加工表面谱分析 |
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| 引用本文： | 李宝贵,李成贵,熊昌友.基于HHT变换的超光滑加工表面谱分析[J].上海计量测试,2006,33(3):17-20. |
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| 作者姓名： | 李宝贵 李成贵 熊昌友 |
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| 作者单位： | 1. 北京航空航天大学仪器科学与光电工程学院
2. 北京长城计量测试技术研究所 |
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| 摘 要： | Hilbert-Huang变换是最新发展起来的处理非线性非平稳信号的时频分析方法。其基本的实现分为两步，多分辨经验模态分解和瞬时频率的求解，随后可以获得信号的时—频谱。这种方法的关键部分是多分辨经验模态分解，任何复杂的信号都可以分解为有限数目并且具有一定物理意义的固有模态函数。本文针对表面粗糙度用HHT进行了分析，得出相应结论，对加工有一定的指导意义。
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| 关 键 词： | HHT 粗糙度 趣光滑表面 谱分析 |
The application of HHT in analysis of surface roughness |
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| Li Baogui,Li Chenggui,Xiong Changyou.The application of HHT in analysis of surface roughness[J].Shanghai Meassurement and Testing,2006,33(3):17-20. |
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| Authors: | Li Baogui Li Chenggui Xiong Changyou |
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| Abstract: | Hilbert-Huang transform (HHT) is a new two-step time frequency analysis method to analyze the nonlinear and non-stationary signal. The key step of this method is empirical mode decomposition(EMD) method with which any complicated data set can be decompose into a finite and often small number of intrinsic mode functions(IMF). In this paper, HHT is used in the analysis of roughness, and the conclusion is helpful to machining. |
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| Keywords: | HHT surface roughness super smooth surface bispectrum analysis |
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