| HHT在多相流差压信号消噪上的应用 |
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| 引用本文： | 林瑞忠,林俊豪,李玉榕,杜民.HHT在多相流差压信号消噪上的应用[J].福州大学学报(自然科学版),2011,39(4):550-556. |
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| 作者姓名： | 林瑞忠 林俊豪 李玉榕 杜民 |
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| 作者单位： | 福州昌晖自动化系统有限公司;福州大学精密仪器研究所; |
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| 基金项目： | 福建省自然科学基金资助项目(2009J01280); 福建省科技厅重点资助项目(2008H0024) |
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| 摘 要： | 为有效提取噪声背景下的多相流差压信号,提高流量的测量精度,针对实际差压信号非线性非平稳的特点,提出基于Hilbert-Huang transform(HHT)的多相流差压信号消噪方法.该方法利用经验模态分解(EMD)把差压信号分解成有限个固有模态函数(IMF),然后分析各个固有模态函数的边际谱,利用HHT不同频段能量分...
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| 关 键 词： | 多相流 差压信号 消噪 Hilbert-Huang transform 模态分解 |
Application of HHT to denoise the multiphase flow differential pressure |
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| LIN Rui-zhong,LIN Jun-hao,LI Yu-rong,DU Min.Application of HHT to denoise the multiphase flow differential pressure[J].Journal of Fuzhou University(Natural Science Edition),2011,39(4):550-556. |
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| Authors: | LIN Rui-zhong LIN Jun-hao LI Yu-rong DU Min |
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| Institution: | LIN Rui-zhong1,LIN Jun-hao2,LI Yu-rong2,DU Min2(1.Changhui Automation System Co Ltd,Fuzhou,Fujian 350002,China,2.Institute of Precision Instrument,Fuzhou University,China) |
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| Abstract: | In order to get rid of noise component from differential pressure signal of multiphase flow and improving the accuracy of flow measurement,a denoise method is proposed,which is based on Hilbert-Huang transform(HHT) because of the nonlinear and nonstationary property of multiphase flow differential pressure.The differential pressure signal is decomposed into a finite number of intrinsic mode function(IMF) by the empirical mode decomposition(EMD).Then the marginal spectrum of every intrinsic mode function is ... |
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| Keywords: | multiphase flow differential pressure signal denoise Hilbert-Huang transform mode decomposition |
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