Article(id=1236697122674897330, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1236697118983909778, articleNumber=null, orderNo=null, doi=10.19666/j.rlfd.202408177, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1722960000000, receivedDateStr=2024-08-07, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1772781170767, onlineDateStr=2026-03-06, pubDate=1745510400000, pubDateStr=2025-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1772781170767, onlineIssueDateStr=2026-03-06, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1772781170767, creator=13701087609, updateTime=1772781170767, updator=13701087609, issue=Issue{id=1236697118983909778, tenantId=1146029695717560320, journalId=1210938733613449225, year='2025', volume='54', issue='4', pageStart='1', pageEnd='185', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1772781169887, creator=13701087609, updateTime=1772781423241, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1236698181698900007, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1236697118983909778, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1236698181698900008, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1236697118983909778, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=129, endPage=139, ext={EN=ArticleExt(id=1236697122955915705, articleId=1236697122674897330, tenantId=1146029695717560320, journalId=1210938733613449225, language=EN, title=Simultaneous rapid determination of multiple coal quality indicators using laser-induced breakdown spectroscopy combined with machine learning, columnId=1211002405299294959, journalTitle=Thermal Power Generation, columnName=Thermal energy science research, runingTitle=null, highlight=null, articleAbstract=
The rapid and comprehensive determination of coal quality is of great significance for the optimization of boiler combustion and the digital transformation of coal-fired power plants. Laser-induced breakdown spectroscopy (LIBS) has the potential to be applied effectively in the rapid determination of coal quality. In order to meet the application goal of rapid coal inspection, 46 sets of spectral data of coal samples from different power plants were collected by the experimental device of coal particle flow LIBS, and the research of simultaneous rapid inspection of multiple indicators of coal quality by combining LIBS with machine learning was carried out systematically. In view of the considerable spectral fluctuations observed in the particle flow state, the number of single-pulse acquisitions was optimized. In addition, invalid spectral screening, spectral averaging and spectral normalization data preprocessing methods were established. Furthermore, four machine learning algorithms (PLSR, SVR, PSO-SVR, and LSTM) and four spectral feature inputs (full spectra, eigenbands, intensity integration, and PCA extraction) were compared in terms of their performance in predicting multiple indicators of coal quality. The results demonstrate that the uncertainty of the spectral signals can be maintained at a maximum of 5% when 200 single-pulse spectra are collected for spectral averaging in a single test. The PSO-SVR algorithm exhibits the most optimal prediction performance in the quantitative analysis of coal quality indicators, and the PCA algorithm reduces the dimensionality of the spectral data, which reduces the amount of model computation and at the same time improves the prediction performance of the model, and the model established by combining both of them has the best performance, the root mean square error (RMSEP) of the coal heat content is 0.289 MJ/kg, and the mean absolute error (MAE) is 0.231 MJ/kg. The coal carbon mass fraction, ash content and volatile matter content are also predicted satisfactorily, with the RMSEP of 0.987%, 1.310% and 1.612%, and the MAE of 0.839%, 1.014%, and 1.033%, respectively. The results show that, combined with appropriate machine learning algorithms, the LIBS technique can achieve simultaneous accurate and rapid determination of multiple indicators of coal quality, which has a broad application prospect in the scenario of efficient and clean coal utilization.
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煤质快速全面检测对锅炉燃烧优化和燃煤电厂数智化转型具有重要意义,激光诱导击穿光谱(laser-induced breakdown spectroscopy,LIBS)在煤质快速检测中具有巨大应用潜力。为满足煤炭现场快速检测的应用目标,利用煤粉颗粒流式LIBS检测实验装置采集了不同电厂的46组煤样光谱数据,系统开展了LIBS与机器学习相结合的煤质多指标同步快速检测研究。针对颗粒流状态下光谱波动较大的特点,对单脉冲光谱采集个数进行了优化,并建立无效光谱筛选、光谱平均、光谱归一化数据预处理方法,进一步对比了PLSR、SVR、PSO-SVR和LSTM 4种机器学习算法以及全光谱、特征波段、强度积分和PCA提取4种光谱特征输入对模型预测煤质多指标性能的影响。结果表明:单次检测累计采集200个单脉冲光谱进行光谱平均,光谱信号不确定性可控制在5%以内;煤质多指标定量分析中PSO-SVR算法的预测性能最佳,利用PCA算法对光谱数据进行降维,在减少模型计算量的同时提高了模型预测性能,两者结合所建立的模型对煤发热量预测均方根误差为0.289 MJ/kg,平均绝对误差为0.231 MJ/kg;对煤碳质量分数、灰分和挥发分预测结果同样较理想,均方根误差分别为0.987%、1.310%和1.612%,平均绝对误差分别为0.839%、1.014%,1.033%。研究结果表明结合合适的机器学习算法,LIBS技术可以实现煤质多指标同步精准快速检测,在煤炭高效清洁利用场景中具有广阔的应用前景。
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, authorsList=熊凯, 邹祥波, 陈创庭, 杨先茂, 陈公达, 张爽, 卢伟业, 陈小玄, 卢志民, 姚顺春)}, authors=[Author(id=1236707893874062034, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=xiongkai@geg.com.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1236707893962142422, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, authorId=1236707893874062034, language=EN, stringName=Kai XIONG, firstName=Kai, middleName=null, lastName=XIONG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.Guangdong Energy Group Co., Ltd., Guangzhou 510730, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1236707894071194331, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, authorId=1236707893874062034, language=CN, stringName=熊凯, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.广东省能源集团有限公司,广东 广州 510730, bio={"content":"
熊凯(1973),男,硕士,高级工程师,主要研究方向为电力行业绿色低碳技术研究与应用,xiongkai@geg.com.cn。
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熊凯(1973),男,硕士,高级工程师,主要研究方向为电力行业绿色低碳技术研究与应用,xiongkai@geg.com.cn。
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1.Guangdong Energy Group Co., Ltd., Guangzhou 510730, China
2.Guangdong Energy Group Science and Technology Research Institute Co., Ltd., Guangzhou 510630,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1236707894364795629, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, authorId=1236707894197023460, language=CN, stringName=邹祥波, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.广东省能源集团有限公司,广东 广州 510730
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1.广东省能源集团有限公司,广东 广州 510730)]), AuthorCompany(id=1236707893530129079, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, xref=2., ext=[AuthorCompanyExt(id=1236707893546906296, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, companyId=1236707893530129079, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2.Guangdong Energy Group Science and Technology Research Institute Co., Ltd., Guangzhou 510630,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1236707894637425411, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, authorId=1236707894440293108, language=CN, stringName=陈创庭, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2.广东能源集团科学技术研究院有限公司,广东 广州 510630, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1236707893530129079, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, xref=2., ext=[AuthorCompanyExt(id=1236707893546906296, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, companyId=1236707893530129079, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Guangdong Energy Group Science and Technology Research Institute Co., Ltd., Guangzhou 510630,China), AuthorCompanyExt(id=1236707893567877818, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, companyId=1236707893530129079, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.广东能源集团科学技术研究院有限公司,广东 广州 510630)])]), Author(id=1236707894729700104, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1236707894813586188, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, authorId=1236707894729700104, language=EN, stringName=Xianmao YANG, firstName=Xianmao, middleName=null, lastName=YANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3.School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1236707894922638098, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, authorId=1236707894729700104, language=CN, stringName=杨先茂, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3.华南理工大学电力学院,广东 广州 510641, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1236707893672735423, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, xref=3., ext=[AuthorCompanyExt(id=1236707893676929728, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, companyId=1236707893672735423, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China), AuthorCompanyExt(id=1236707893685318337, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, companyId=1236707893672735423, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.华南理工大学电力学院,广东 广州 510641)])]), Author(id=1236707895019107095, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, orderNo=4, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1236707895119770396, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, authorId=1236707895019107095, language=EN, stringName=Gongda CHEN, firstName=Gongda, middleName=null, lastName=CHEN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2.Guangdong Energy Group Science and Technology Research Institute Co., Ltd., Guangzhou 510630,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1236707895224628003, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, authorId=1236707895019107095, language=CN, stringName=陈公达, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2.广东能源集团科学技术研究院有限公司,广东 广州 510630)])]), Author(id=1236707895304319788, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, orderNo=5, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1236707895396594481, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, authorId=1236707895304319788, language=EN, stringName=Shuang ZHANG, firstName=Shuang, middleName=null, lastName=ZHANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.Guangdong Energy Group Co., Ltd., Guangzhou 510730, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1236707895493063480, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, authorId=1236707895304319788, language=CN, stringName=张爽, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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Schematic diagram of the particle flow LIBS experimental setup, figureFileSmall=V49R7THXXVdDZAkaZAmp9Q==, figureFileBig=yC+oM9tk5GXfLSfmqW7wHw==, tableContent=null), ArticleFig(id=1236707899913859076, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=CN, label=图1, caption=
颗粒流LIBS实验系统原理, figureFileSmall=V49R7THXXVdDZAkaZAmp9Q==, figureFileBig=yC+oM9tk5GXfLSfmqW7wHw==, tableContent=null), ArticleFig(id=1236707900022910989, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=EN, label=Fig.2, caption=
Raw single pulse spectroscopy of coal sample, figureFileSmall=vIzqwH2Or6l/q0tKWaK9Jg==, figureFileBig=KkVBiAJ7rGA++ADbS/qA0w==, tableContent=null), ArticleFig(id=1236707900119379986, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=CN, label=图2, caption=
煤样原始单脉冲光谱, figureFileSmall=vIzqwH2Or6l/q0tKWaK9Jg==, figureFileBig=KkVBiAJ7rGA++ADbS/qA0w==, tableContent=null), ArticleFig(id=1236707900249403417, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=EN, label=Fig.3, caption=
LIBS spectra of individual coal samples after pre-processing, figureFileSmall=7OOmT1+LPR9fPG5bwqwkvQ==, figureFileBig=D7pbE59wdu2CA118dCFCvw==, tableContent=null), ArticleFig(id=1236707900366843938, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=CN, label=图3, caption=
单个煤样预处理后LIBS光谱, figureFileSmall=7OOmT1+LPR9fPG5bwqwkvQ==, figureFileBig=D7pbE59wdu2CA118dCFCvw==, tableContent=null), ArticleFig(id=1236707900438147113, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=EN, label=Fig.4, caption=
Influence of the average spectral number on the volatility of the spectral signal, figureFileSmall=TC35zR/yOFvAmf0ug8puTw==, figureFileBig=XmcGVZCXIFqAv+gogpOLWA==, tableContent=null), ArticleFig(id=1236707900526227506, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=CN, label=图4, caption=
平均光谱数量对光谱信号波动性的影响, figureFileSmall=TC35zR/yOFvAmf0ug8puTw==, figureFileBig=XmcGVZCXIFqAv+gogpOLWA==, tableContent=null), ArticleFig(id=1236707901948096566, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=EN, label=Fig.5, caption=
Model building process, figureFileSmall=e4jKPeY00dyJsnRMn5ey1g==, figureFileBig=4g9hB6r+nVxziyxtPG4sDw==, tableContent=null), ArticleFig(id=1236707902036176954, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=CN, label=图5, caption=
模型构建流程, figureFileSmall=e4jKPeY00dyJsnRMn5ey1g==, figureFileBig=4g9hB6r+nVxziyxtPG4sDw==, tableContent=null), ArticleFig(id=1236707902141034562, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=EN, label=Fig.6, caption=
Relationship between the number of principal components and the predicted δMAE value of each indicator, figureFileSmall=LnrEhnmN5AIobthJK1GmHg==, figureFileBig=Bq0T7vdjzRLVT0O9L3Ncig==, tableContent=null), ArticleFig(id=1236707902271057995, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=CN, label=图6, caption=
主成分个数与各指标预测δMAE关系, figureFileSmall=LnrEhnmN5AIobthJK1GmHg==, figureFileBig=Bq0T7vdjzRLVT0O9L3Ncig==, tableContent=null), ArticleFig(id=1236707902380109905, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=EN, label=Fig.7, caption=
Prediction results of coal quality indexes for the PCA feature extraction input PSO-SVR model, figureFileSmall=9x6eKMhJT7ZUkLuOsImTSg==, figureFileBig=MMaSP+5/59HPhpyKZ9md1w==, tableContent=null), ArticleFig(id=1236707902455607378, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=CN, label=图7, caption=
PCA提取输入PSO-SVR模型煤质指标预测结果, figureFileSmall=9x6eKMhJT7ZUkLuOsImTSg==, figureFileBig=MMaSP+5/59HPhpyKZ9md1w==, tableContent=null), ArticleFig(id=1236707902556270680, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=EN, label=Tab.1, caption=
Reference values for calorific value, carbon content, ash and volatile matter of coal samples
, figureFileSmall=null, figureFileBig=null, tableContent=
| 煤样编号 | 发热量/(MJ·kg–1) | 碳质量分数/% | 灰分质量分数/% | 挥发分质量分数/% | 煤样编号 | 发热量/(MJ·kg–1) | 碳质量分数/% | 灰分质量分数/% | 挥发分质量分数/% |
|---|
| C1 | 26.27 | 65.08 | 14.71 | 38.27 | C24 | 25.86 | 64.76 | 18.14 | 29.75 |
| C2 | 27.03 | 64.03 | 12.29 | 40.11 | C25 | 25.52 | 64.43 | 9.12 | 46.82 |
| C3 | 27.65 | 63.19 | 9.13 | 40.33 | C26 | 19.23 | 50.60 | 35.88 | 21.97 |
| C4 | 27.72 | 64.05 | 9.61 | 40.88 | C27 | 25.29 | 64.53 | 17.70 | 33.49 |
| C5 | 28.00 | 64.40 | 8.91 | 40.66 | C28 | 26.28 | 66.66 | 17.11 | 29.48 |
| C6 | 28.04 | 64.13 | 10.46 | 38.05 | C29 | 27.00 | 68.99 | 12.05 | 32.53 |
| C7 | 27.65 | 62.26 | 9.44 | 41.20 | C30 | 23.10 | 59.31 | 23.78 | 28.84 |
| C8 | 27.22 | 62.47 | 10.28 | 39.60 | C31 | 24.71 | 62.49 | 22.08 | 28.87 |
| C9 | 27.00 | 62.17 | 12.96 | 37.03 | C32 | 24.22 | 61.43 | 22.19 | 29.73 |
| C10 | 23.39 | 60.97 | 26.96 | 33.90 | C33 | 24.72 | 62.53 | 22.47 | 28.45 |
| C11 | 19.35 | 48.50 | 38.03 | 23.99 | C34 | 26.61 | 70.12 | 14.46 | 44.54 |
| C12 | 25.52 | 64.26 | 18.75 | 29.58 | C35 | 23.25 | 61.36 | 23.67 | 31.26 |
| C13 | 21.57 | 55.12 | 35.25 | 12.67 | C36 | 29.14 | 72.08 | 10.92 | 33.10 |
| C14 | 22.92 | 58.32 | 31.44 | 13.34 | C37 | 20.20 | 50.19 | 34.01 | 24.06 |
| C15 | 26.36 | 66.43 | 16.51 | 30.36 | C38 | 25.62 | 63.35 | 21.11 | 28.32 |
| C16 | 27.18 | 68.36 | 14.13 | 30.57 | C39 | 27.34 | 67.62 | 18.16 | 26.99 |
| C17 | 25.20 | 63.66 | 20.22 | 27.62 | V1 | 27.70 | 64.51 | 9.78 | 40.01 |
| C18 | 22.91 | 58.11 | 28.60 | 23.86 | V2 | 27.74 | 63.35 | 7.38 | 42.13 |
| C19 | 24.34 | 61.30 | 26.30 | 20.63 | V3 | 27.04 | 68.74 | 13.93 | 30.52 |
| C20 | 20.78 | 52.46 | 38.65 | 14.81 | V4 | 24.98 | 62.86 | 22.03 | 25.84 |
| C21 | 21.48 | 53.85 | 33.14 | 23.90 | V5 | 26.35 | 66.63 | 17.32 | 30.11 |
| C22 | 19.71 | 50.36 | 33.51 | 24.83 | V6 | 24.37 | 61.58 | 24.96 | 26.99 |
| C23 | 21.94 | 56.30 | 28.43 | 26.26 | V7 | 27.28 | 67.66 | 18.28 | 26.89 |
), ArticleFig(id=1236707902635962462, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=CN, label=表1, caption=
煤样4个指标的参考值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 煤样编号 | 发热量/(MJ·kg–1) | 碳质量分数/% | 灰分质量分数/% | 挥发分质量分数/% | 煤样编号 | 发热量/(MJ·kg–1) | 碳质量分数/% | 灰分质量分数/% | 挥发分质量分数/% |
|---|
| C1 | 26.27 | 65.08 | 14.71 | 38.27 | C24 | 25.86 | 64.76 | 18.14 | 29.75 |
| C2 | 27.03 | 64.03 | 12.29 | 40.11 | C25 | 25.52 | 64.43 | 9.12 | 46.82 |
| C3 | 27.65 | 63.19 | 9.13 | 40.33 | C26 | 19.23 | 50.60 | 35.88 | 21.97 |
| C4 | 27.72 | 64.05 | 9.61 | 40.88 | C27 | 25.29 | 64.53 | 17.70 | 33.49 |
| C5 | 28.00 | 64.40 | 8.91 | 40.66 | C28 | 26.28 | 66.66 | 17.11 | 29.48 |
| C6 | 28.04 | 64.13 | 10.46 | 38.05 | C29 | 27.00 | 68.99 | 12.05 | 32.53 |
| C7 | 27.65 | 62.26 | 9.44 | 41.20 | C30 | 23.10 | 59.31 | 23.78 | 28.84 |
| C8 | 27.22 | 62.47 | 10.28 | 39.60 | C31 | 24.71 | 62.49 | 22.08 | 28.87 |
| C9 | 27.00 | 62.17 | 12.96 | 37.03 | C32 | 24.22 | 61.43 | 22.19 | 29.73 |
| C10 | 23.39 | 60.97 | 26.96 | 33.90 | C33 | 24.72 | 62.53 | 22.47 | 28.45 |
| C11 | 19.35 | 48.50 | 38.03 | 23.99 | C34 | 26.61 | 70.12 | 14.46 | 44.54 |
| C12 | 25.52 | 64.26 | 18.75 | 29.58 | C35 | 23.25 | 61.36 | 23.67 | 31.26 |
| C13 | 21.57 | 55.12 | 35.25 | 12.67 | C36 | 29.14 | 72.08 | 10.92 | 33.10 |
| C14 | 22.92 | 58.32 | 31.44 | 13.34 | C37 | 20.20 | 50.19 | 34.01 | 24.06 |
| C15 | 26.36 | 66.43 | 16.51 | 30.36 | C38 | 25.62 | 63.35 | 21.11 | 28.32 |
| C16 | 27.18 | 68.36 | 14.13 | 30.57 | C39 | 27.34 | 67.62 | 18.16 | 26.99 |
| C17 | 25.20 | 63.66 | 20.22 | 27.62 | V1 | 27.70 | 64.51 | 9.78 | 40.01 |
| C18 | 22.91 | 58.11 | 28.60 | 23.86 | V2 | 27.74 | 63.35 | 7.38 | 42.13 |
| C19 | 24.34 | 61.30 | 26.30 | 20.63 | V3 | 27.04 | 68.74 | 13.93 | 30.52 |
| C20 | 20.78 | 52.46 | 38.65 | 14.81 | V4 | 24.98 | 62.86 | 22.03 | 25.84 |
| C21 | 21.48 | 53.85 | 33.14 | 23.90 | V5 | 26.35 | 66.63 | 17.32 | 30.11 |
| C22 | 19.71 | 50.36 | 33.51 | 24.83 | V6 | 24.37 | 61.58 | 24.96 | 26.99 |
| C23 | 21.94 | 56.30 | 28.43 | 26.26 | V7 | 27.28 | 67.66 | 18.28 | 26.89 |
), ArticleFig(id=1236707902740820069, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=EN, label=Tab.2, caption=
Spectral feature selection methods
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| 输入特征 | 特征选取方法 | 特征数量 |
|---|
| 全光谱 | 无 | 8 192 |
| 特征波段 | 主要元素特征谱线的光谱波段 | 805 |
| 强度积分 | 光谱波段积分 | 55 |
| PCA提取 | PCA算法降维 | <30(根据各指标预测误差选取) |
), ArticleFig(id=1236707902849871983, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=CN, label=表2, caption=
光谱特征选取方法
, figureFileSmall=null, figureFileBig=null, tableContent=
| 输入特征 | 特征选取方法 | 特征数量 |
|---|
| 全光谱 | 无 | 8 192 |
| 特征波段 | 主要元素特征谱线的光谱波段 | 805 |
| 强度积分 | 光谱波段积分 | 55 |
| PCA提取 | PCA算法降维 | <30(根据各指标预测误差选取) |
), ArticleFig(id=1236707902942146678, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=EN, label=Tab.3, caption=
Prediction results of four machine learning models on coal sample indicators
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| 机器学习模型 | 模型评价指标 | 发热量/(MJ·kg–1) | 碳质量分数/% | 灰分 质量分数/% | 挥发分质量分数/% |
|---|
| PLSR | Rt2 | 0.991 | 0.985 | 0.994 | 0.983 |
| Rp2 | 0.763 | 0.775 | 0.822 | 0.758 |
| δRMSEP | 0.603 | 1.175 | 3.008 | 3.008 |
| δMAE | 0.488 | 1.071 | 2.193 | 2.421 |
| SVR | Rt2 | 0.998 | 0.998 | 0.998 | 0.998 |
| Rp2 | 0.656 | 0.855 | 0.859 | 0.696 |
| δRMSEP | 4.104 | 1.407 | 3.002 | 3.586 |
| δMAE | 2.957 | 1.156 | 2.475 | 2.42 |
| PSO-SVR | Rt2 | 0.915 | 0.865 | 0.932 | 0.925 |
| Rp2 | 0.931 | 0.750 | 0.928 | 0.892 |
| δRMSEP | 0.328 | 1.235 | 1.568 | 2.000 |
| δMAE | 0.266 | 1.043 | 1.340 | 1.330 |
| LSTM | Rt2 | 0.987 | 0.839 | 0.999 | 0.980 |
| Rp2 | 0.556 | 0.414 | 0.865 | 0.739 |
| δRMSEP | 0.826 | 1.896 | 2.156 | 3.119 |
| δMAE | 0.768 | 1.609 | 1.618 | 2.297 |
), ArticleFig(id=1236707903030227072, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=CN, label=表3, caption=
4种机器学习模型对煤样指标预测结果
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| 机器学习模型 | 模型评价指标 | 发热量/(MJ·kg–1) | 碳质量分数/% | 灰分 质量分数/% | 挥发分质量分数/% |
|---|
| PLSR | Rt2 | 0.991 | 0.985 | 0.994 | 0.983 |
| Rp2 | 0.763 | 0.775 | 0.822 | 0.758 |
| δRMSEP | 0.603 | 1.175 | 3.008 | 3.008 |
| δMAE | 0.488 | 1.071 | 2.193 | 2.421 |
| SVR | Rt2 | 0.998 | 0.998 | 0.998 | 0.998 |
| Rp2 | 0.656 | 0.855 | 0.859 | 0.696 |
| δRMSEP | 4.104 | 1.407 | 3.002 | 3.586 |
| δMAE | 2.957 | 1.156 | 2.475 | 2.42 |
| PSO-SVR | Rt2 | 0.915 | 0.865 | 0.932 | 0.925 |
| Rp2 | 0.931 | 0.750 | 0.928 | 0.892 |
| δRMSEP | 0.328 | 1.235 | 1.568 | 2.000 |
| δMAE | 0.266 | 1.043 | 1.340 | 1.330 |
| LSTM | Rt2 | 0.987 | 0.839 | 0.999 | 0.980 |
| Rp2 | 0.556 | 0.414 | 0.865 | 0.739 |
| δRMSEP | 0.826 | 1.896 | 2.156 | 3.119 |
| δMAE | 0.768 | 1.609 | 1.618 | 2.297 |
), ArticleFig(id=1236707903143473290, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=EN, label=Tab.4, caption=
Prediction results of coal sample indexes by different spectral features input into PSO-SVR model
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| 输入特征 | 模型评价 指标 | 发热量/(MJ·kg–1) | 碳质量 分数/% | 灰分质量 分数/% | 挥发分质量 分数/% |
|---|
| 全光谱 | Rp2 | 0.931 | 0.750 | 0.928 | 0.892 |
| δRMSEP | 0.328 | 1.235 | 1.568 | 2.000 |
| δMAE | 0.266 | 1.043 | 1.340 | 1.330 |
特征 波段 | Rp2 | 0.868 | 0.582 | 0.943 | 0.883 |
| δRMSEP | 0.452 | 1.598 | 1.402 | 2.089 |
| δMAE | 0.409 | 1.114 | 1.022 | 1.443 |
| 强度积分 | Rp2 | 0.681 | 0.644 | 0.900 | 0.628 |
| δRMSEP | 0.702 | 2.608 | 1.855 | 3.272 |
| δMAE | 0.535 | 1.897 | 1.639 | 2.501 |
| PCA提取 | Rp2 | 0.946 | 0.841 | 0.950 | 0.930 |
| δRMSEP | 0.289 | 0.987 | 1.310 | 1.612 |
| δMAE | 0.231 | 0.839 | 1.014 | 1.033 |
), ArticleFig(id=1236707903227359378, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=CN, label=表4, caption=
不同特征输入PSO-SVR模型对煤样指标预测结果
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| 输入特征 | 模型评价 指标 | 发热量/(MJ·kg–1) | 碳质量 分数/% | 灰分质量 分数/% | 挥发分质量 分数/% |
|---|
| 全光谱 | Rp2 | 0.931 | 0.750 | 0.928 | 0.892 |
| δRMSEP | 0.328 | 1.235 | 1.568 | 2.000 |
| δMAE | 0.266 | 1.043 | 1.340 | 1.330 |
特征 波段 | Rp2 | 0.868 | 0.582 | 0.943 | 0.883 |
| δRMSEP | 0.452 | 1.598 | 1.402 | 2.089 |
| δMAE | 0.409 | 1.114 | 1.022 | 1.443 |
| 强度积分 | Rp2 | 0.681 | 0.644 | 0.900 | 0.628 |
| δRMSEP | 0.702 | 2.608 | 1.855 | 3.272 |
| δMAE | 0.535 | 1.897 | 1.639 | 2.501 |
| PCA提取 | Rp2 | 0.946 | 0.841 | 0.950 | 0.930 |
| δRMSEP | 0.289 | 0.987 | 1.310 | 1.612 |
| δMAE | 0.231 | 0.839 | 1.014 | 1.033 |
), ArticleFig(id=1236707903361577117, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=EN, label=Tab.5, caption=
Comparison of the accuracy of coal quality measurement indicators with national standards
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测量指标 | 《中子活化型煤炭在线分析仪》(GB/T 29161—2012) | 本文(PCA提取输入 PSO-SVR模型) | 指标差距 |
|---|
| 静态准确度 | 动态准确度 |
|---|
| 发热量/(MJ·kg–1) | 0.65 | 0.8 | 0.231 | 优于标准 |
| 碳质量分数/% | 40~85:1.5 45~65:1.0 | | 0.839 | 优于标准 |
| 灰分质量分数/% | <15:1.2 15~30:1.6 >30:2.0 | <15:1.8 15~30:2.3 >30:2.8 | 1.014 | 优于标准 |
| 挥发分质量分数/% | | | 1.033 | 标准未规定 |
), ArticleFig(id=1236707903466434726, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236697122674897330, language=CN, label=表5, caption=
煤质测量指标准确度与国家标准对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测量指标 | 《中子活化型煤炭在线分析仪》(GB/T 29161—2012) | 本文(PCA提取输入 PSO-SVR模型) | 指标差距 |
|---|
| 静态准确度 | 动态准确度 |
|---|
| 发热量/(MJ·kg–1) | 0.65 | 0.8 | 0.231 | 优于标准 |
| 碳质量分数/% | 40~85:1.5 45~65:1.0 | | 0.839 | 优于标准 |
| 灰分质量分数/% | <15:1.2 15~30:1.6 >30:2.0 | <15:1.8 15~30:2.3 >30:2.8 | 1.014 | 优于标准 |
| 挥发分质量分数/% | | | 1.033 | 标准未规定 |
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