Article(id=1198664998722568361, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1198664995669110898, articleNumber=null, orderNo=null, doi=10.16790/j.cnki.1009-9239.im.2023.02.013, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1656518400000, receivedDateStr=2022-06-30, revisedDate=1662912000000, revisedDateStr=2022-09-12, acceptedDate=null, acceptedDateStr=null, onlineDate=1763713605813, onlineDateStr=2025-11-21, pubDate=1676822400000, pubDateStr=2023-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763713605813, onlineIssueDateStr=2025-11-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763713605813, creator=13701087609, updateTime=1763713605813, updator=13701087609, issue=Issue{id=1198664995669110898, tenantId=1146029695717560320, journalId=1149653034449285133, year='2023', volume='56', issue='2', pageStart='1', pageEnd='117', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1763713605086, creator=13701087609, updateTime=1766563346770, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1210617678729966036, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1198664995669110898, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1210617678729966037, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1198664995669110898, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=85, endPage=90, ext={EN=ArticleExt(id=1198664999464960185, articleId=1198664998722568361, tenantId=1146029695717560320, journalId=1149653034449285133, language=EN, title=Life evaluation of small sample polyimide film modified by nano TiO
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In the life evaluation of polyimide (PI) film modified by nano TiO2, a small sample insulation life evaluation method based on gray neural network was proposed to solve the problems such as lack of failure data, life distribution cannot be determined uniquely, high cost, and long test time. Nano TiO2 modified PI film was prepared by in-situ polymerization method, and the accelerated electrical ageing test was conducted on the films to obtain the failure data. The grey neural network was constructed and trained to obtain the extended data with the similar characteristics and changing rules with the original data. The least square method was used for parameter estimation, and the life evaluation results of different failure data samples, distribution models, empirical cumulative failure functions were analyzed and compared. The different life evaluation schemes before and after extending were analyzed by calculation example. The results show that the combination of Weibull distribution and mathematical expectation formula is more suitable for life evaluation of original sample size.The evaluation of insulation life using expanded failure data has a better effect, and the combination of inverse power function model, lognormal distribution, and median empirical formula is the most suitable for the life evaluation of the extended samples.
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2改性聚酰亚胺薄膜寿命评估, columnId=1198664997682376829, journalTitle=绝缘材料, columnName=聚酰亚胺薄膜专题, runingTitle=null, highlight=null, articleAbstract=
在纳米TiO2改性聚酰亚胺(PI)薄膜寿命评估中,针对失效数据少、寿命分布无法唯一确定、成本高和试验时间长等问题,提出一种基于灰色神经网络的小样本绝缘寿命评估方法。采用原位聚合法制备纳米TiO2改性PI薄膜,进行加速电老化试验并获取失效数据;构建并训练灰色神经网络,得到与原始数据特征、变化规律相似的扩充数据。采用最小二乘法进行参数估计,分析对比不同失效数据样本量、分布模型和经验累计失效函数的寿命评估结果。通过实际算例,分析扩充前后的最优寿命评估不同方案。结果表明:Weibull分布和数学期望公式的组合更适合原始样本容量的寿命评估。利用扩充后的绝缘失效数据进行寿命评估效果更好,选用反幂函数模型、对数正态分布和中值公式的组合,对扩充样本进行寿命评估最合适。
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244(4),122581., articleTitle=Remaining useful life prediction of lithium-ion battery using a novel particle filter framework with grey neural network, refAbstract=null)], funds=[Fund(id=1210935045464912089, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, awardId=52167017, language=CN, fundingSource=国家自然科学基金资助项目(52167017), fundOrder=null, country=null), Fund(id=1210935045569769695, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, awardId=20224BAB204054, language=CN, fundingSource=江西省自然科学基金资助项目(20224BAB204054), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1210935042373709929, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, xref=null, ext=[AuthorCompanyExt(id=1210935042377904234, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, companyId=1210935042373709929, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Electrical Engineering and Automation, Jiangxi University of Science and Technology, Ganzhou 341000, China), AuthorCompanyExt(id=1210935042386292843, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, companyId=1210935042373709929, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=江西理工大学 电气工程与自动化学院,江西 赣州 341000)])], figs=[ArticleFig(id=1210935044235980964, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, language=EN, label=Fig.1, caption=
Preparation flow chart of PI film modified by nano TiO2, figureFileSmall=YeKJEp4g8j1kd411dIkSBw==, figureFileBig=orlw5d0e9f9A68McB9JkEA==, tableContent=null), ArticleFig(id=1210935044336644264, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, language=CN, label=图1, caption=
纳米TiO2改性PI薄膜制备流程图, figureFileSmall=YeKJEp4g8j1kd411dIkSBw==, figureFileBig=orlw5d0e9f9A68McB9JkEA==, tableContent=null), ArticleFig(id=1210935044458279083, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, language=EN, label=Fig.2, caption=
Structure of Grey neural networks model, figureFileSmall=lqRKvWizI6nECLTXXhbPog==, figureFileBig=xCM4Qx8hdLzp/9PlAo8Kgw==, tableContent=null), ArticleFig(id=1210935044546359472, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, language=CN, label=图2, caption=
灰色神经网络的拓扑结构示意图, figureFileSmall=lqRKvWizI6nECLTXXhbPog==, figureFileBig=xCM4Qx8hdLzp/9PlAo8Kgw==, tableContent=null), ArticleFig(id=1210935044722520247, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, language=EN, label=Fig.3, caption=
Life evaluation flow chart of PI film modified by nano TiO2 based on grey neural network, figureFileSmall=ffmLJn6teawVOsJTBW+1Zw==, figureFileBig=cEDtKzRL72AssqIBJ9BchA==, tableContent=null), ArticleFig(id=1210935044827377851, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, language=CN, label=图3, caption=
基于灰色神经网络的纳米TiO2改性PI薄膜寿命评估流程图, figureFileSmall=ffmLJn6teawVOsJTBW+1Zw==, figureFileBig=cEDtKzRL72AssqIBJ9BchA==, tableContent=null), ArticleFig(id=1210935044923846848, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, language=EN, label=Tab.1, caption=
Failure time under different voltages, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 800 V | 900 V | 1 000 V | 1 100 V |
|---|
| 失效时间/s | 时间对数 | 失效时间/s | 时间对数 | 失效时间/s | 时间对数 | 失效时间/s | 时间对数 |
|---|
| 1 | 7 513 | 8.924 | 6 041 | 8.706 | 4 943 | 8.505 | 3 922 | 8.274 |
| 2 | 8 933 | 9.097 | 7 622 | 8.938 | 7 723 | 8.951 | 5 490 | 8.610 |
| 3 | 9 241 | 9.131 | 8 171 | 9.008 | 7 822 | 8.964 | 6 172 | 8.727 |
| 4 | 9 378 | 9.146 | 8 927 | 9.096 | 8 099 | 8.999 | 6 496 | 8.778 |
| 5 | 11 986 | 9.391 | 9 081 | 9.113 | 8 270 | 9.020 | 6 686 | 8.807 |
| 6 | 12 049 | 9.396 | 9 930 | 9.203 | 8 411 | 9.037 | 7 011 | 8.855 |
| 7 | 13 143 | 9.483 | 10 542 | 9.263 | 9 046 | 9.110 | 7 285 | 8.893 |
| 8 | 13 587 | 9.516 | 12 613 | 9.442 | 10 886 | 9.295 | 8 247 | 9.017 |
), ArticleFig(id=1210935045016121540, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, language=CN, label=表1, caption=
不同电压下的失效时间
, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 800 V | 900 V | 1 000 V | 1 100 V |
|---|
| 失效时间/s | 时间对数 | 失效时间/s | 时间对数 | 失效时间/s | 时间对数 | 失效时间/s | 时间对数 |
|---|
| 1 | 7 513 | 8.924 | 6 041 | 8.706 | 4 943 | 8.505 | 3 922 | 8.274 |
| 2 | 8 933 | 9.097 | 7 622 | 8.938 | 7 723 | 8.951 | 5 490 | 8.610 |
| 3 | 9 241 | 9.131 | 8 171 | 9.008 | 7 822 | 8.964 | 6 172 | 8.727 |
| 4 | 9 378 | 9.146 | 8 927 | 9.096 | 8 099 | 8.999 | 6 496 | 8.778 |
| 5 | 11 986 | 9.391 | 9 081 | 9.113 | 8 270 | 9.020 | 6 686 | 8.807 |
| 6 | 12 049 | 9.396 | 9 930 | 9.203 | 8 411 | 9.037 | 7 011 | 8.855 |
| 7 | 13 143 | 9.483 | 10 542 | 9.263 | 9 046 | 9.110 | 7 285 | 8.893 |
| 8 | 13 587 | 9.516 | 12 613 | 9.442 | 10 886 | 9.295 | 8 247 | 9.017 |
), ArticleFig(id=1210935045112590538, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, language=EN, label=Tab.2, caption=
Life evaluation results of PI film modified by nano TiO2, figureFileSmall=null, figureFileBig=null, tableContent=
| 数据类型 | 分布模型 | 拟合曲线 | 估计结果 |
|---|
| 数学期望公式 | 中值公式 | Blom公式 | 海森公式 |
|---|
| 原始数据 | 对数正态分布 | IPM拟合函数 | L=3×108U -1.522 | L=3×108U -1.53 | L=3×108U -1.532 | L=3×108U -1.535 |
| 相关系数 | 0.967 2 | 0.969 1 | 0.969 4 | 0.969 9 |
| Weibull分布 | IPM拟合函数 | L=4×108U -1.545 | L=4×108U -1.541 | L=3×108U -1.54 | L=3×108U -1.538 |
| 相关系数 | 0.975 1 | 0.974 4 | 0.974 2 | 0.973 8 |
| 仿真扩充数据 | 对数正态分布 | IPM拟合函数 | L=9×108U -1.684 | L=9×108U -1.686 | L=9×108U -1.685 | L=9×108U -1.687 |
| 相关系数 | 0.981 9 | 0.989 5 | 0.984 3 | 0.984 9 |
| Weibull分布 | IPM拟合函数 | L=1×109U -1.721 | L=1×109U -1.716 | L=1×109U -1.715 | L=1×109U -1.712 |
| 相关系数 | 0.984 8 | 0.988 6 | 0.987 5 | 0.973 3 |
), ArticleFig(id=1210935045209059535, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198664998722568361, language=CN, label=表2, caption=
纳米TiO2改性PI薄膜寿命评估结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 数据类型 | 分布模型 | 拟合曲线 | 估计结果 |
|---|
| 数学期望公式 | 中值公式 | Blom公式 | 海森公式 |
|---|
| 原始数据 | 对数正态分布 | IPM拟合函数 | L=3×108U -1.522 | L=3×108U -1.53 | L=3×108U -1.532 | L=3×108U -1.535 |
| 相关系数 | 0.967 2 | 0.969 1 | 0.969 4 | 0.969 9 |
| Weibull分布 | IPM拟合函数 | L=4×108U -1.545 | L=4×108U -1.541 | L=3×108U -1.54 | L=3×108U -1.538 |
| 相关系数 | 0.975 1 | 0.974 4 | 0.974 2 | 0.973 8 |
| 仿真扩充数据 | 对数正态分布 | IPM拟合函数 | L=9×108U -1.684 | L=9×108U -1.686 | L=9×108U -1.685 | L=9×108U -1.687 |
| 相关系数 | 0.981 9 | 0.989 5 | 0.984 3 | 0.984 9 |
| Weibull分布 | IPM拟合函数 | L=1×109U -1.721 | L=1×109U -1.716 | L=1×109U -1.715 | L=1×109U -1.712 |
| 相关系数 | 0.984 8 | 0.988 6 | 0.987 5 | 0.973 3 |
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