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lycy9945木虫 (小有名气)
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[求助]
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我还有一篇文章急用EI检索，请方便的朋友帮忙，非常感谢！ Chen Bin, Liu Ge. Study on the detection of the water content in oil based on the envelope spectrum of HHT [J]. Chinese Journal of scientific Instrument,2014,35(2):337-342 |
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lycy9945
木虫 (小有名气)
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4楼2014-05-15 09:37:03
baiyuefei
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Accession number: 20141317512601 Title: Study on the detection of the water content in oil based on the envelope spectrum of HHT Authors: Chen, Bin1 Email author hustchb@163.com; Liu, Ge1 Email author lycy9945@163.com Author affiliation: 1 Engineering Research Centre for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China Corresponding author: Liu, G. (lycy9945@163.com) Source title: Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument Abbreviated source title: Yi Qi Yi Biao Xue Bao Volume: 35 Issue: 2 Issue date: February 2014 Publication year: 2014 Pages: 337-342 Language: Chinese ISSN: 02543087 CODEN: YYXUDY Document type: Journal article (JA) Publisher: Science Press Abstract: In order to accurately detect the water content in oil, a new detection approach based on Hilbert-Huang transform (HHT) envelope spectrum is presented. Firstly, according to the characteristic that the pressure resonance signal of the oil containing water is an amplitude-modulation signal, the expression of the pressure resonance signal is established; and the empirical mode decomposition (EMD) is performed to obtain the intrinsic mode functions (IMFs) of the signal. Then, the IMFs having strong correlation with the original signal are analyzed using the Hilbert transform envelope spectrum demodulation, and the accurate demodulation signal that contains the characteristic information of water content in oil is obtained. The experiment results show that as the water content in oil increases, the order of the pressure resonance frequency decreases gradually, there is a corresponding relation between the resonance frequency of the oil with different water contents and the water content in oil. This method can effectively achieve the water content detection in oil, and provides a theoretical support for the safe operation of oil system. Number of references: 18 Main heading: Signal detection Controlled terms: Demodulation - Error detection - Natural frequencies - Water content Uncontrolled terms: Corresponding relations - Different water contents - Empirical Mode Decomposition - Envelope spectra - Hilbert Huang transforms - Intrinsic Mode functions - Resonance frequencies - Strong correlation Classification code: 444 Water Resources - 711.1 Electromagnetic Waves in Different Media - 716 Telecommunication; Radar, Radio and Television - 716.1 Information Theory and Signal Processing - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory Database: Compendex Compilation and indexing terms, © 2013 Elsevier Inc. Full-text and Local Holdings Links |
2楼2014-05-14 18:15:19
baiyuefei
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3楼2014-05-14 18:15:31