Article(id=1227591812928434855, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591806980915649, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.202309068, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1695484800000, receivedDateStr=2023-09-24, revisedDate=1702828800000, revisedDateStr=2023-12-18, acceptedDate=null, acceptedDateStr=null, onlineDate=1770610295755, onlineDateStr=2026-02-09, pubDate=1757433600000, pubDateStr=2025-09-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770610295755, onlineIssueDateStr=2026-02-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770610295755, creator=13701087609, updateTime=1770610295755, updator=13701087609, issue=Issue{id=1227591806980915649, tenantId=1146029695717560320, journalId=1225147924628267009, year='2025', volume='38', issue='9', pageStart='1935', pageEnd='2204', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1770610294337, creator=13701087609, updateTime=1770610356968, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1227592069754057532, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591806980915649, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1227592069754057533, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591806980915649, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=2023, endPage=2032, ext={EN=ArticleExt(id=1227591813243007666, articleId=1227591812928434855, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Research on key technologies for micro-vibration measurement and evaluation, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Environmental microvibration affects the accuracy of precision instruments, making microvibration measurement and assessment crucial. Microvibration level measurement is based on the octave spectrum of the velocity signal. However, the frequency-domain FFT method used in traditional octave analysis suffers from shortcomings such as fixed resolution and low-frequency spectrum leakage. Therefore, a complex-analysis ZFFT correction algorithm based on ratio correction was proposed. Simulations show that this algorithm improves spectral resolution while maintaining the same number of FFT analysis points. While maintaining the same number of sampling points, the computational effort is significantly reduced, and the spectrum amplitude error is as low as one thousandth. Frequency-band octave analysis is employed to suppress low-frequency spectrum leakage and increase the number of spectral lines. A microvibration monitoring and analysis system was developed, comprising a low-frequency microvibration sensor, the MI-7208 intelligent measurement device, and microvibration level measurement and assessment software. Field measurements verified the system's ability to detect VC-F-level microvibration signals and its long-term measurement stability.
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环境微振动影响精密仪器使用精度,因此微振动测量和评估十分重要。微振动等级测量是基于速度信号倍频程频谱,而传统倍频程分析采用的频域快速傅里叶变换(FFT)算法,存在分辨率固定、低频段频谱泄漏等缺点。本文提出了一种基于比值校正的复解析细化傅里叶变换(ZFFT)校正算法。仿真表明,该算法能够大幅降低计算量,提高频谱分辨率,降低频域幅值误差。采用分频段倍频程分析方法既能抑制低频段的频谱泄漏,又能增加频谱谱线,提高分析精度;研制了一套微振动测量和评估系统,包括:低频微振动传感器、MI-7208智能测量装置、微振动等级测量评估软件(简称:MVE-7208)。通过实地测量,验证了该系统具有VC-F级微振动的测量能力和稳定性。
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1.浙江大学流体动力与机电系统国家重点实验室,浙江 杭州 310000)]), AuthorCompany(id=1227653068997718641, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, xref=2., ext=[AuthorCompanyExt(id=1227653069001912946, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, companyId=1227653068997718641, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2.杭州亿恒科技有限公司,浙江 杭州 310000)])], figs=[ArticleFig(id=1227653072713872128, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 1, caption=
Time and frequency domain plots of vibration signals at a site, figureFileSmall=RHvSKaEANVrSu4xBY7HmTQ==, figureFileBig=53blRdvvp27QWQqIxdaR7A==, tableContent=null), ArticleFig(id=1227653072827118342, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图1, caption=
某场地振动信号时域及频域图, figureFileSmall=RHvSKaEANVrSu4xBY7HmTQ==, figureFileBig=53blRdvvp27QWQqIxdaR7A==, tableContent=null), ArticleFig(id=1227653072952947468, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 2, caption=
Flowchart of M-ZFFT algorithm, figureFileSmall=vCLE6gV5NOolX9OXrVgAQQ==, figureFileBig=FmWg/eQnnKdUry95UVjzPQ==, tableContent=null), ArticleFig(id=1227653073082970898, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图2, caption=
M-ZFFT算法流程图, figureFileSmall=vCLE6gV5NOolX9OXrVgAQQ==, figureFileBig=FmWg/eQnnKdUry95UVjzPQ==, tableContent=null), ArticleFig(id=1227653073200411416, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 3, caption=
The amplitude-frequency characteristics of low-passfilter, figureFileSmall=1JQoKt0ks/V1rDOVPcSiSA==, figureFileBig=vvS12fd9wMRm2uwwBkILaA==, tableContent=null), ArticleFig(id=1227653073330434846, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图3, caption=
低通滤波器幅频特性, figureFileSmall=1JQoKt0ks/V1rDOVPcSiSA==, figureFileBig=vvS12fd9wMRm2uwwBkILaA==, tableContent=null), ArticleFig(id=1227653073519178534, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 4, caption=
The amplitude-frequency characteristics of complex analytic bandpass filter, figureFileSmall=rPmrUjDGjd6vNTnKc1XoMg==, figureFileBig=Z6w4ksxN9d9HpOOPtDOh4Q==, tableContent=null), ArticleFig(id=1227653073653396270, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图4, caption=
复解析带通滤波器幅频特性, figureFileSmall=rPmrUjDGjd6vNTnKc1XoMg==, figureFileBig=Z6w4ksxN9d9HpOOPtDOh4Q==, tableContent=null), ArticleFig(id=1227653073791808314, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 5, caption=
Schematic diagram of transition zone design, figureFileSmall=uGxUcKJtz2EjGl75jjcPog==, figureFileBig=/aB0uyMtGSvyfTE88VGYgw==, tableContent=null), ArticleFig(id=1227653073930220352, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图5, caption=
过渡带设计示意图, figureFileSmall=uGxUcKJtz2EjGl75jjcPog==, figureFileBig=/aB0uyMtGSvyfTE88VGYgw==, tableContent=null), ArticleFig(id=1227653074035077956, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 6, caption=
Signal spectrum of Hanning, figureFileSmall=fDEjUL11hV0KUBAXx8cKdQ==, figureFileBig=RQkcNh2rYz+VxiXr14hk3A==, tableContent=null), ArticleFig(id=1227653074148324168, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图6, caption=
Hanning窗信号谱图, figureFileSmall=fDEjUL11hV0KUBAXx8cKdQ==, figureFileBig=RQkcNh2rYz+VxiXr14hk3A==, tableContent=null), ArticleFig(id=1227653074244793167, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 7, caption=
Comparison chart of the computation of the algorithms, figureFileSmall=5eLigmXNRHbld+2VUzEnFw==, figureFileBig=NdXl8B12xstChJ4TaneZ1w==, tableContent=null), ArticleFig(id=1227653074366427990, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图7, caption=
算法计算量对比图, figureFileSmall=5eLigmXNRHbld+2VUzEnFw==, figureFileBig=NdXl8B12xstChJ4TaneZ1w==, tableContent=null), ArticleFig(id=1227653074446119775, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 8, caption=
Spectrogram before and after M-ZFFT refinement correction algorithm, figureFileSmall=xlHUbkluN/jOMd2+lajodQ==, figureFileBig=V+7b6eJbAsIv7+vCKnzKeg==, tableContent=null), ArticleFig(id=1227653075847017319, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图8, caption=
M-ZFFT细化校正前后频谱图, figureFileSmall=xlHUbkluN/jOMd2+lajodQ==, figureFileBig=V+7b6eJbAsIv7+vCKnzKeg==, tableContent=null), ArticleFig(id=1227653077793174383, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 9, caption=
Spectrogram of ZFFT refinement correction algorithm, figureFileSmall=1218BZBTz9ZflZHgNNs5Hw==, figureFileBig=/q/ajX+Xay7cOIkXRv0Xcw==, tableContent=null), ArticleFig(id=1227653077923197816, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图9, caption=
ZFFT细化频谱图, figureFileSmall=1218BZBTz9ZflZHgNNs5Hw==, figureFileBig=/q/ajX+Xay7cOIkXRv0Xcw==, tableContent=null), ArticleFig(id=1227653078145495935, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 10, caption=
Spectrogram of D·N point FFT analysis, figureFileSmall=qc+85WAnw2K1TQyyspf3Aw==, figureFileBig=zBc2yMV8/pADZ4YBZg9zWg==, tableContent=null), ArticleFig(id=1227653078279713669, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图10, caption=
D·N点FFT分析频谱图, figureFileSmall=qc+85WAnw2K1TQyyspf3Aw==, figureFileBig=zBc2yMV8/pADZ4YBZg9zWg==, tableContent=null), ArticleFig(id=1227653078409737101, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 11, caption=
Octave spectrum analysis based on crossover bands, figureFileSmall=0df84t4beZCKPqFhu6vlnw==, figureFileBig=20aWmHXZ4cy6+u64uaTnxA==, tableContent=null), ArticleFig(id=1227653078552343442, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图11, caption=
基于分频段的倍频程频谱分析, figureFileSmall=0df84t4beZCKPqFhu6vlnw==, figureFileBig=20aWmHXZ4cy6+u64uaTnxA==, tableContent=null), ArticleFig(id=1227653078669783959, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 12, caption=
Crossover-band octave spectrum of the 1 Hz single-frequency sinusoidal signal, figureFileSmall=3PeTYz4rLbHhyy7wJVd97A==, figureFileBig=sHrIkoevfbhCqMy/fojrhQ==, tableContent=null), ArticleFig(id=1227653078816584604, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图12, caption=
1 Hz单频正弦信号分频段倍频程频谱, figureFileSmall=3PeTYz4rLbHhyy7wJVd97A==, figureFileBig=sHrIkoevfbhCqMy/fojrhQ==, tableContent=null), ArticleFig(id=1227653078934025121, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 13, caption=
Crossover-band octave spectrum of the 6.3 Hz single-frequency sinusoidal signal, figureFileSmall=KX+WUraOzbWZkpHQFk6d7g==, figureFileBig=U+7fKlO2oXz/3MQ4m/p8NQ==, tableContent=null), ArticleFig(id=1227653080301368234, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图13, caption=
6.3 Hz单频正弦信号分频段倍频程频谱, figureFileSmall=KX+WUraOzbWZkpHQFk6d7g==, figureFileBig=U+7fKlO2oXz/3MQ4m/p8NQ==, tableContent=null), ArticleFig(id=1227653080448168875, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 14, caption=
Crossover-band octave spectrum of the 31.5 Hz single-frequency sinusoidal signal, figureFileSmall=sOh3Y2CU8akabKNG/NyjQg==, figureFileBig=en09ghHS35uX+Q+F6xVkAg==, tableContent=null), ArticleFig(id=1227653080565609394, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图14, caption=
31.5 Hz单频正弦信号分频段倍频程频谱, figureFileSmall=sOh3Y2CU8akabKNG/NyjQg==, figureFileBig=en09ghHS35uX+Q+F6xVkAg==, tableContent=null), ArticleFig(id=1227653080657884086, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 15, caption=
FFT of D·N points octave spectrum of the 1 Hz single-frequency sinusoidal signal, figureFileSmall=a/JXkClqEMxCtBKeWM5/Bg==, figureFileBig=efqpZ1LQGnslGt7Kb0gtwg==, tableContent=null), ArticleFig(id=1227653080829850554, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图15, caption=
1 Hz单频正弦信号D·N点FFT倍频程频谱, figureFileSmall=a/JXkClqEMxCtBKeWM5/Bg==, figureFileBig=efqpZ1LQGnslGt7Kb0gtwg==, tableContent=null), ArticleFig(id=1227653080930513859, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 16, caption=
Comparison plot of octave spectrum analysis based on crossover bands, figureFileSmall=inEdgCpaxnYmUrUKZp4Org==, figureFileBig=MtCH/FMkL57jSC3z9daZmQ==, tableContent=null), ArticleFig(id=1227653081014399942, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图16, caption=
分频段倍频程频谱分析对比图, figureFileSmall=inEdgCpaxnYmUrUKZp4Org==, figureFileBig=MtCH/FMkL57jSC3z9daZmQ==, tableContent=null), ArticleFig(id=1227653081106674633, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 17, caption=
The general scheme of micro-vibration monitoring and analysis system, figureFileSmall=ZLJt/89aYg7bzSIGxcuFpg==, figureFileBig=EGfmLvg8Lk00nxutF/fJzw==, tableContent=null), ArticleFig(id=1227653081236698063, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图17, caption=
微振动测量与评估系统总体方案, figureFileSmall=ZLJt/89aYg7bzSIGxcuFpg==, figureFileBig=EGfmLvg8Lk00nxutF/fJzw==, tableContent=null), ArticleFig(id=1227653081345749970, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 18, caption=
The general framework for micro-vibration level measurement and evaluation software, figureFileSmall=WZqzSep5/0mI5qGZntTwJg==, figureFileBig=yRTgjhcHKMvA+WQcVNDb4Q==, tableContent=null), ArticleFig(id=1227653081450607574, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图18, caption=
微振动等级测量评估软件总体框架, figureFileSmall=WZqzSep5/0mI5qGZntTwJg==, figureFileBig=yRTgjhcHKMvA+WQcVNDb4Q==, tableContent=null), ArticleFig(id=1227653081568048089, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 19, caption=
Operational framework of the software, figureFileSmall=h3bxEkvQGuvb3MBTC/ZHrQ==, figureFileBig=mIwD3z7FePu4kjH/7UtvuA==, tableContent=null), ArticleFig(id=1227653081630962651, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图19, caption=
软件运行框架, figureFileSmall=h3bxEkvQGuvb3MBTC/ZHrQ==, figureFileBig=mIwD3z7FePu4kjH/7UtvuA==, tableContent=null), ArticleFig(id=1227653081706460127, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 20, caption=
UI of the software, figureFileSmall=kma/ztthEVivUdnC3kk9VQ==, figureFileBig=oOoeH25XCb02sfmqLjto+g==, tableContent=null), ArticleFig(id=1227653081798734819, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图20, caption=
软件UI界面, figureFileSmall=kma/ztthEVivUdnC3kk9VQ==, figureFileBig=oOoeH25XCb02sfmqLjto+g==, tableContent=null), ArticleFig(id=1227653081899398119, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 21, caption=
Parameter setting module for the refined calibration algorithm, figureFileSmall=SYKhIpJKV8U7eGwSm7uL+Q==, figureFileBig=5xb9/rqW4XDz9YuZH5pJzQ==, tableContent=null), ArticleFig(id=1227653082033615851, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图21, caption=
细化校正参数设置模块, figureFileSmall=SYKhIpJKV8U7eGwSm7uL+Q==, figureFileBig=5xb9/rqW4XDz9YuZH5pJzQ==, tableContent=null), ArticleFig(id=1227653082125890544, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 22, caption=
Micro-vibration measurement point arrangement, figureFileSmall=CncKIH4lyYbDKm72BDcLOA==, figureFileBig=rGiZ9HU5xNl7NuEQF60i5w==, tableContent=null), ArticleFig(id=1227653082297857013, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图22, caption=
微振动测点布置, figureFileSmall=CncKIH4lyYbDKm72BDcLOA==, figureFileBig=rGiZ9HU5xNl7NuEQF60i5w==, tableContent=null), ArticleFig(id=1227653082490794999, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 23, caption=
Measurement site and sensor installation diagram, figureFileSmall=vfbRKrGOXI7HPdGJew7isg==, figureFileBig=iCwy6KiwIGcCRWF7srEYqQ==, tableContent=null), ArticleFig(id=1227653082599846909, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图23, caption=
测量现场及传感器安装, figureFileSmall=vfbRKrGOXI7HPdGJew7isg==, figureFileBig=iCwy6KiwIGcCRWF7srEYqQ==, tableContent=null), ArticleFig(id=1227653082713093119, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 24, caption=
Three-way micro-vibration spectrum at measurement point At, figureFileSmall=0Ac3xnxe3fGq/1yHEnwW/g==, figureFileBig=lOTCNVG39cwY10Il5Q8jsQ==, tableContent=null), ArticleFig(id=1227653082843115525, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图24, caption=
测点At三向微振动频谱, figureFileSmall=0Ac3xnxe3fGq/1yHEnwW/g==, figureFileBig=lOTCNVG39cwY10Il5Q8jsQ==, tableContent=null), ArticleFig(id=1227653082939584521, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 25, caption=
Three-way micro-vibration spectrum at measurement point Bt, figureFileSmall=CA8h5cBKvuVuO2DXoacfMA==, figureFileBig=0p2yydSHyFttNY66tFJd1w==, tableContent=null), ArticleFig(id=1227653083019276297, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图25, caption=
测点Bt三向微振动频谱, figureFileSmall=CA8h5cBKvuVuO2DXoacfMA==, figureFileBig=0p2yydSHyFttNY66tFJd1w==, tableContent=null), ArticleFig(id=1227653083098968078, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 26, caption=
Three-way micro-vibration spectrum at measurement point Ct, figureFileSmall=o6oXix87s3kWiL/3NY7SwA==, figureFileBig=jy5nPPssJ8NL3Ewp7T56uQ==, tableContent=null), ArticleFig(id=1227653083191242768, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图26, caption=
测点Ct三向微振动频谱, figureFileSmall=o6oXix87s3kWiL/3NY7SwA==, figureFileBig=jy5nPPssJ8NL3Ewp7T56uQ==, tableContent=null), ArticleFig(id=1227653083279323155, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 27, caption=
Three-way micro-vibration spectrum at measurement point Dt, figureFileSmall=L1hcznOwbZ7SapaLVJnPbA==, figureFileBig=LcxpnR5TqoPLa3nu+nQzgA==, tableContent=null), ArticleFig(id=1227653083371597843, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图27, caption=
测点Dt三向微振动频谱, figureFileSmall=L1hcznOwbZ7SapaLVJnPbA==, figureFileBig=LcxpnR5TqoPLa3nu+nQzgA==, tableContent=null), ArticleFig(id=1227653084764106775, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 28, caption=
Three-way micro-vibration spectrum at measurement point Et, figureFileSmall=6QqLNOsg4mzJ7ig6njiw1Q==, figureFileBig=Xs1ys2HZKWMpDeJ0CnC6oA==, tableContent=null), ArticleFig(id=1227653084919296028, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图28, caption=
测点Et三向微振动频谱, figureFileSmall=6QqLNOsg4mzJ7ig6njiw1Q==, figureFileBig=Xs1ys2HZKWMpDeJ0CnC6oA==, tableContent=null), ArticleFig(id=1227653084998987806, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Fig. 29, caption=
12 hours measurements, figureFileSmall=Q1r6zIVU6wNp6urpxxaxXQ==, figureFileBig=scQs+/lSQF0jKwqI/Y+llg==, tableContent=null), ArticleFig(id=1227653085108039716, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=图29, caption=
12 h测量结果, figureFileSmall=Q1r6zIVU6wNp6urpxxaxXQ==, figureFileBig=scQs+/lSQF0jKwqI/Y+llg==, tableContent=null), ArticleFig(id=1227653085217091623, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Tab. 1, caption=
Amplitude and frequency information of simulated signal
, figureFileSmall=null, figureFileBig=null, tableContent=
| i | 幅值A/(mm·s−1) | 频率f/Hz |
|---|
| 1 | 1 | 0.93 |
| 2 | 3 | 2.64 |
| 3 | 2 | 2.81 |
| 4 | 5 | 4.87 |
), ArticleFig(id=1227653085342920747, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=表1, caption=
仿真信号幅值及频率信息
, figureFileSmall=null, figureFileBig=null, tableContent=
| i | 幅值A/(mm·s−1) | 频率f/Hz |
|---|
| 1 | 1 | 0.93 |
| 2 | 3 | 2.64 |
| 3 | 2 | 2.81 |
| 4 | 5 | 4.87 |
), ArticleFig(id=1227653085422612525, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Tab. 2, caption=
Amplitudes and errors of the refined and corrected spectrum
, figureFileSmall=null, figureFileBig=null, tableContent=
| 理论幅值 | ZFFT | M-ZFFT |
|---|
| 细化幅值 | 幅值误差/% | 细化校正幅值 | 幅值误差/% |
|---|
| 1 | 0.9514 | 4.86 | 1.0012 | 0.1150 |
| 3 | 2.6420 | 11.93 | 2.9981 | 0.0631 |
| 2 | 1.9254 | 3.73 | 1.9986 | 0.0711 |
| 5 | 4.2988 | 14.02 | 4.9988 | 0.0249 |
), ArticleFig(id=1227653085535858735, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=表2, caption=
细化校正频谱幅值及误差
, figureFileSmall=null, figureFileBig=null, tableContent=
| 理论幅值 | ZFFT | M-ZFFT |
|---|
| 细化幅值 | 幅值误差/% | 细化校正幅值 | 幅值误差/% |
|---|
| 1 | 0.9514 | 4.86 | 1.0012 | 0.1150 |
| 3 | 2.6420 | 11.93 | 2.9981 | 0.0631 |
| 2 | 1.9254 | 3.73 | 1.9986 | 0.0711 |
| 5 | 4.2988 | 14.02 | 4.9988 | 0.0249 |
), ArticleFig(id=1227653085649104946, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Tab. 3, caption=
Main parameters of sensor type 941B
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| 频率范围/Hz | 0.5~100 |
| 灵敏度/(V·s·m-1) | 23 |
), ArticleFig(id=1227653085825265719, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=表3, caption=
941B型拾振器主要参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| 频率范围/Hz | 0.5~100 |
| 灵敏度/(V·s·m-1) | 23 |
), ArticleFig(id=1227653085930123322, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=EN, label=Tab. 4, caption=
Partial system parameters of MI-7208
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| 输入通道 | 8 |
| 分辨率 | 24位 |
| 动态范围/dB | 130 |
), ArticleFig(id=1227653086022398013, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591812928434855, language=CN, label=表4, caption=
MI-7208系统部分参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| 输入通道 | 8 |
| 分辨率 | 24位 |
| 动态范围/dB | 130 |
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