Article(id=1227591810424439274, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1227591806980915649, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.202309048, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1694707200000, receivedDateStr=2023-09-15, revisedDate=1701187200000, revisedDateStr=2023-11-29, acceptedDate=null, acceptedDateStr=null, onlineDate=1770610295158, onlineDateStr=2026-02-09, pubDate=1757433600000, pubDateStr=2025-09-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770610295158, onlineIssueDateStr=2026-02-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770610295158, creator=13701087609, updateTime=1770610295158, 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=1995, endPage=2001, ext={EN=ArticleExt(id=1227591811963748867, articleId=1227591810424439274, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Data-driven simulation of non-Gaussian stochastic processes, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
A novel data-driven method for simulating non-Gaussian stochastic processes is proposed in this paper. The sample conversion model and power spectrum conversion model are established by using artificial neural network models respectively. A neural network model is constructed based on sample data to transform Gaussian samples into non-Gaussian samples. The distribution function of the samples is modeled using the shifted generalized lognormal distribution, and the latent Gaussian power spectrum is directly obtained through the backpropagation neural network model. The Gaussian stochastic process samples are generated using the spectral representation method, and then transformed into non-Gaussian process samples using the sample conversion neural network model. This method is capable of generating non-Gaussian stochastic process samples based on limited sample data, addressing the challenge of determining latent Gaussian power spectrum, and solving the problems such as poor accuracy and limited application range of the central moments-based transformation models. Through numerical simulations and validation in turbulent wind fields, the accuracy and effectiveness of the proposed method are further demonstrated.
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本文提出了数据驱动的非高斯随机过程模拟方法,利用人工神经网络模型建立样本转换与功率谱转换模型。基于样本数据建立了高斯样本转换到非高斯样本的神经网络模型;运用平移广义对数正态分布对样本分布函数进行建模,通过反向传播神经网络模型直接获得潜在高斯功率谱;采用谱表示法生成高斯随机过程样本,并借助样本转换神经网络模型将其转换为非高斯过程样本。这种方法能够在有限样本数据的基础上生成非高斯随机过程样本,解决了传统转换模型精度欠佳、适用范围受限以及难以确定潜在高斯功率谱等难题。通过数值算例和脉动风场模拟验证,进一步证明了所提方法的准确性和有效性。
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Comparison of sample transformation models, figureFileSmall=gjYcm9gtSYfj5XytgC+3MQ==, figureFileBig=UOpwSUdph/QKvLKe0aiNQw==, tableContent=null), ArticleFig(id=1227653068448268748, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=图1, caption=
样本转换模型对比, figureFileSmall=gjYcm9gtSYfj5XytgC+3MQ==, figureFileBig=UOpwSUdph/QKvLKe0aiNQw==, tableContent=null), ArticleFig(id=1227653068603458015, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Fig. 2, caption=
A neural network model of power spectrums transformation, figureFileSmall=AOhINDi7teOmPskimrQMZw==, figureFileBig=+mkNQ+4exLHkV+E6z3Qlzw==, tableContent=null), ArticleFig(id=1227653068712509927, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=图2, caption=
功率谱转换的神经网络模型, figureFileSmall=AOhINDi7teOmPskimrQMZw==, figureFileBig=+mkNQ+4exLHkV+E6z3Qlzw==, tableContent=null), ArticleFig(id=1227653068834144748, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Fig. 3, caption=
Simplified schematic diagram of neural network model of power spectrums transformation, figureFileSmall=BtOJXZ3WiGpw50DYeFZYTg==, figureFileBig=hmVeGcXVtyycU/qYVEhmJg==, tableContent=null), ArticleFig(id=1227653068947390967, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=图3, caption=
功率谱转换的神经网络模型简化示意图, figureFileSmall=BtOJXZ3WiGpw50DYeFZYTg==, figureFileBig=hmVeGcXVtyycU/qYVEhmJg==, tableContent=null), ArticleFig(id=1227653069094191615, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Fig. 4, caption=
Flowchart for simulating non-Gaussian stochasticprocesses, figureFileSmall=WZAX/2HGWxsYi0WCUejX5w==, figureFileBig=yDxgIbVgznBgfzgAqGss7A==, tableContent=null), ArticleFig(id=1227653069203243527, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=图4, caption=
模拟非高斯随机过程流程图, figureFileSmall=WZAX/2HGWxsYi0WCUejX5w==, figureFileBig=yDxgIbVgznBgfzgAqGss7A==, tableContent=null), ArticleFig(id=1227653069337461265, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Fig. 5, caption=
Data distribution (Example 1), figureFileSmall=hTD7ACjQB1axbtCzXaKw+Q==, figureFileBig=LWRbWDvZmfbR76WBDDvrCA==, tableContent=null), ArticleFig(id=1227653069450707482, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=图5, caption=
数据分布情况(算例1), figureFileSmall=hTD7ACjQB1axbtCzXaKw+Q==, figureFileBig=LWRbWDvZmfbR76WBDDvrCA==, tableContent=null), ArticleFig(id=1227653069572342309, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Fig. 6, caption=
Comparison of reconstructed distribution function and data accumulation probability (Example 1), figureFileSmall=v9Mu/lqgfatzMh3gPrDo9Q==, figureFileBig=rPvgV/pij7jB/wWTT4NAAQ==, tableContent=null), ArticleFig(id=1227653069706560049, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=图6, caption=
重构分布函数与数据累积概率对比(算例1), figureFileSmall=v9Mu/lqgfatzMh3gPrDo9Q==, figureFileBig=rPvgV/pij7jB/wWTT4NAAQ==, tableContent=null), ArticleFig(id=1227653069840777794, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Fig. 7, caption=
Comparison of non-Gaussian samples and latent Gaussian samples (Example 1), figureFileSmall=P6/bGxl2X1p6xuleRUFkbg==, figureFileBig=Sj3aXnJ2mMU2igoBzq9ilA==, tableContent=null), ArticleFig(id=1227653069962412616, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=图7, caption=
非高斯样本和潜在高斯样本对比(算例1), figureFileSmall=P6/bGxl2X1p6xuleRUFkbg==, figureFileBig=Sj3aXnJ2mMU2igoBzq9ilA==, tableContent=null), ArticleFig(id=1227653071329755730, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Fig. 8, caption=
Comparison of power spectrums (Example 1), figureFileSmall=dbGhJ4qPaEhGjfuPn6cQIw==, figureFileBig=rauUO8H+BoS0nx5MoXG9+w==, tableContent=null), ArticleFig(id=1227653071434613338, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=图8, caption=
功率谱对比(算例1), figureFileSmall=dbGhJ4qPaEhGjfuPn6cQIw==, figureFileBig=rauUO8H+BoS0nx5MoXG9+w==, tableContent=null), ArticleFig(id=1227653071564636775, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Fig. 9, caption=
Comparison of cumulative probability (Example 1), figureFileSmall=n8f7oEBrJ2fzdlvr8W43vw==, figureFileBig=CFtFZSOXNNVO2JzKTH1F/w==, tableContent=null), ArticleFig(id=1227653071719826033, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=图9, caption=
累积概率对比(算例1), figureFileSmall=n8f7oEBrJ2fzdlvr8W43vw==, figureFileBig=CFtFZSOXNNVO2JzKTH1F/w==, tableContent=null), ArticleFig(id=1227653071812100729, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Fig. 10, caption=
Wind speed time-history data, figureFileSmall=bjJuxU/uBzeMNn/nv/74fw==, figureFileBig=rpveLuvNU3O4yBmCOrzu1A==, tableContent=null), ArticleFig(id=1227653071937929856, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=图10, caption=
风速时程数据, figureFileSmall=bjJuxU/uBzeMNn/nv/74fw==, figureFileBig=rpveLuvNU3O4yBmCOrzu1A==, tableContent=null), ArticleFig(id=1227653072042787464, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Fig. 11, caption=
Data distributions (Example 2), figureFileSmall=LJqzpYSxpZoC1Fiv27Bx2w==, figureFileBig=4l8BVq46//DpWcXYHyuBig==, tableContent=null), ArticleFig(id=1227653072202171028, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=图11, caption=
数据分布情况(算例2), figureFileSmall=LJqzpYSxpZoC1Fiv27Bx2w==, figureFileBig=4l8BVq46//DpWcXYHyuBig==, tableContent=null), ArticleFig(id=1227653072378331804, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Fig. 12, caption=
Comparison of non-Gaussian samples and latent Gaussian samples (Example 2), figureFileSmall=ToZo9qDCV2JkX7sr0/Sk9g==, figureFileBig=8HXterTVyeJQsXYVMeCeKQ==, tableContent=null), ArticleFig(id=1227653072499966631, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=图12, caption=
非高斯样本和潜在高斯样本对比(算例2), figureFileSmall=ToZo9qDCV2JkX7sr0/Sk9g==, figureFileBig=8HXterTVyeJQsXYVMeCeKQ==, tableContent=null), ArticleFig(id=1227653072650961586, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Fig. 13, caption=
Comparison of power spectrums (Example 2), figureFileSmall=YPAajYAfsWfjxerlucBWyA==, figureFileBig=GZN2QmdsueGRwVfY4+TKGA==, tableContent=null), ArticleFig(id=1227653072760013500, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=图13, caption=
功率谱对比(算例2), figureFileSmall=YPAajYAfsWfjxerlucBWyA==, figureFileBig=GZN2QmdsueGRwVfY4+TKGA==, tableContent=null), ArticleFig(id=1227653072843899588, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Fig. 14, caption=
Comparison of exceedance probability (Example 2), figureFileSmall=jU5L6gezeSXNCp/yyYa5+Q==, figureFileBig=xBatx4gMaxB9Eevess9Wig==, tableContent=null), ArticleFig(id=1227653072927785672, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=图14, caption=
超越概率对比(算例2), figureFileSmall=jU5L6gezeSXNCp/yyYa5+Q==, figureFileBig=xBatx4gMaxB9Eevess9Wig==, tableContent=null), ArticleFig(id=1227653073192026840, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Tab. 1, caption=
Comparison of the first four orders central moments of samples (Example 1)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 分布 | 均值 | 标准差 | 偏度 | 峰度 |
|---|
| 非高斯数据 | −0.0005 | 1.0002 | 0.1692 | 2.7428 |
| 本文方法 | −0.0004 | 1.0004 | 0.1786 | 2.7579 |
), ArticleFig(id=1227653073338827487, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=表1, caption=
样本前4阶中心矩对比(算例1)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 分布 | 均值 | 标准差 | 偏度 | 峰度 |
|---|
| 非高斯数据 | −0.0005 | 1.0002 | 0.1692 | 2.7428 |
| 本文方法 | −0.0004 | 1.0004 | 0.1786 | 2.7579 |
), ArticleFig(id=1227653073489822439, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=EN, label=Tab. 2, caption=
Comparison of exceedance probability errors
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | 超越概率误差 |
|---|
| 本文方法 | 0.0088 |
| 传统多项式转换模型 | 0.0227 |
| 统一多项式转换模型 | 0.0155 |
), ArticleFig(id=1227653073607262960, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1227591810424439274, language=CN, label=表2, caption=
超越概率误差对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | 超越概率误差 |
|---|
| 本文方法 | 0.0088 |
| 传统多项式转换模型 | 0.0227 |
| 统一多项式转换模型 | 0.0155 |
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