Article(id=1241038856494052037, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1241038854333985467, articleNumber=null, orderNo=null, doi=10.16579/j.issn.1001.9669.2025.01.006, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1715788800000, receivedDateStr=2024-05-16, revisedDate=1718035200000, revisedDateStr=2024-06-11, acceptedDate=null, acceptedDateStr=null, onlineDate=1773816320775, onlineDateStr=2026-03-18, pubDate=1736870400000, pubDateStr=2025-01-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773816320775, onlineIssueDateStr=2026-03-18, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773816320775, creator=13701087609, updateTime=1773816320775, updator=13701087609, issue=Issue{id=1241038854333985467, tenantId=1146029695717560320, journalId=1227999626482147330, year='2025', volume='47', issue='1', pageStart='1', pageEnd='154', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773816320260, creator=13701087609, updateTime=1773819065926, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241050370550591873, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1241038854333985467, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241050370554786178, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1241038854333985467, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=50, endPage=57, ext={EN=ArticleExt(id=1241038856892510922, articleId=1241038856494052037, tenantId=1146029695717560320, journalId=1227999626482147330, language=EN, title=Numerical and test study on dynamic characteristics of the tail beam of top coal caving hydraulic supports, columnId=1228282192162390694, journalTitle=Journal of Mechanical Strength, columnName=Experimental Research·Testing Technology, runingTitle=null, highlight=null, articleAbstract=
In order to determine the sensitive vibration characteristic parameters of coal and gangue in the process of top coal caving and improve the intelligent identification accuracy of coal and gangue, the dynamic characteristics of the tail beam of the hydraulic support were studied. Firstly, the rigid-flexible coupling dynamic model of top coal caving hydraulic support and coal gangue was established, and the vibration acceleration of the tail beam of the hydraulic support in the process of coal caving was calculated. Secondly, the acceleration response was decomposed by variational mode decomposition (VMD) to obtain the intrinsic mode function (IMF), and the time domain and frequency domain characteristics of each IMF component were analyzed. Thirdly, the t-distributed stochastic neighborhood embedding (t-SNE) method was used to reduce the dimension of these features, and the average silhouette coefficient (ASC) of different features was calculated. The vibration characteristics of the tail beam under the impact of coal gangue were compared and studied. Finally, the bench of the top coal caving hydraulic support was built to verify the calculation results of the model. The results show that the energy, singular value, mean frequency, peak frequency, spectral centroid and frequency variance in the IMF component of the vibration acceleration of the tail beam are sensitive to the characteristics of coal and gangue, which can be used as the characteristic parameters of the coal and gangue identification.
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为确定放顶煤过程中煤、矸敏感振动特征参数,提高煤矸智能识别精度,研究液压支架尾梁的动态特性。首先,建立放顶煤液压支架与煤矸的刚柔耦合动力学模型,计算放煤过程中液压支架尾梁的振动加速度;其次,利用变分模态分解(Variational Mode Decomposition,VMD)对该加速度响应进行分解,得到固有模态函数(Intrinsic Mode Function,IMF),并分析每个IMF分量的时域和频域特征;然后,采用t分布式随机邻域嵌入(t-distributed Stochastic Neighborhood Embedding,t-SNE)方法对这些特征进行降维,并计算不同特征的平均轮廓系数(Average Silhouette Coefficient,ASC),对比研究了煤矸冲击下的尾梁振动特征;最后,搭建放顶煤液压支架试验台,对模型计算结果进行验证。结果表明,尾梁振动加速度IMF分量中的能量、奇异值、频率均值、峰值频率、谱心频率、频率方差对煤、矸特征较为敏感,可作为煤矸识别的特征参数。
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杨善国,男,1970年生,安徽安庆人,博士,教授,硕士研究生导师;主要研究方向为智能矿山开采、声纹识别智能放煤、振动噪声分析与控制;E-mail:
ysgcumt@163.com。
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, authorsList=吴明珂, 杨善国, 王瑶, 孟彬, 杨政, 刘后广)}, authors=[Author(id=1241038865272730477, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=wumingke@cumt.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1241038865352422259, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, authorId=1241038865272730477, language=EN, stringName=Mingke WU, firstName=Mingke, middleName=null, lastName=WU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.中国矿业大学 机电工程学院,徐州 221116, bio={"content":"
吴明珂,男,2000年生,江苏徐州人,硕士研究生;主要研究方向为煤矸识别;E-mail:wumingke@cumt.edu.cn。
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吴明珂,男,2000年生,江苏徐州人,硕士研究生;主要研究方向为煤矸识别;E-mail:wumingke@cumt.edu.cn。
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1.School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
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1.中国矿业大学 机电工程学院,徐州 221116
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1.中国矿业大学 机电工程学院,徐州 221116, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1241038864765219674, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, xref=1., ext=[AuthorCompanyExt(id=1241038864773608283, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, companyId=1241038864765219674, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1.中国矿业大学 机电工程学院,徐州 221116)])]), Author(id=1241038866489078682, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, 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=1241038866744931238, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, authorId=1241038866489078682, language=EN, stringName=Bin MENG, firstName=Bin, middleName=null, lastName=MENG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.中国矿业大学 机电工程学院,徐州 221116)])]), Author(id=1241038867285996465, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, 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=1241038867617346486, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, authorId=1241038867285996465, language=EN, stringName=Zheng YANG, firstName=Zheng, middleName=null, lastName=YANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.中国矿业大学 机电工程学院,徐州 221116)])]), Author(id=1241038867852227520, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, 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=1241038867978056647, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, authorId=1241038867852227520, language=EN, stringName=Houguang LIU, firstName=Houguang, middleName=null, lastName=LIU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, address=
1.School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
2.Jiangsu Province and Education Ministry Co-sponsored Collaborative Innovation Center of Intelligent Mining Equipment, Xuzhou 221116, China
3.National Key Laboratory of Intelligent Mining Equipment Technology, Xuzhou 221116, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1241038868170994635, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, authorId=1241038867852227520, language=CN, stringName=刘后广, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 3, address=
1.中国矿业大学 机电工程学院,徐州 221116
2.江苏省矿山智能采掘装备协同创新中心,徐州 221116
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44(2):317-325.(In Chinese), articleTitle=Development of automated excitation auxiliary cutting similar experiment prototype and its mechanical experiment, refAbstract=null)], funds=[Fund(id=1241038876089839828, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, awardId=52274162, language=EN, fundingSource=National Natural Science Foundation of China(52274162), fundOrder=null, country=null), Fund(id=1241038876232446169, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, awardId=52274162, language=CN, fundingSource=国家自然科学基金项目(52274162), fundOrder=null, country=null), Fund(id=1241038876316332253, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, awardId=PAPD, language=EN, fundingSource=Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD), fundOrder=null, country=null), Fund(id=1241038876437967071, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, awardId=PAPD, language=CN, fundingSource=江苏高校优势学科建设工程项目(PAPD), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1241038864765219674, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, xref=1., ext=[AuthorCompanyExt(id=1241038864773608283, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, companyId=1241038864765219674, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1.中国矿业大学 机电工程学院,徐州 221116)]), AuthorCompany(id=1241038864903631712, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, xref=2., ext=[AuthorCompanyExt(id=1241038864907826017, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, companyId=1241038864903631712, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2.江苏省矿山智能采掘装备协同创新中心,徐州 221116)]), AuthorCompany(id=1241038865088181095, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, xref=3., ext=[AuthorCompanyExt(id=1241038865092375400, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, companyId=1241038865088181095, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.National Key Laboratory of Intelligent Mining Equipment Technology, Xuzhou 221116, China), AuthorCompanyExt(id=1241038865100764009, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, companyId=1241038865088181095, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.智能采矿装备技术全国重点实验室,徐州 221116)])], figs=[ArticleFig(id=1241038870133927971, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=EN, label=Fig.1, caption=
Overall frame diagram, figureFileSmall=W7sZWF3gAhZStkULhWaIhw==, figureFileBig=PnlYjp1XX3KAjUt8GlIhsw==, tableContent=null), ArticleFig(id=1241038870402363443, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=CN, label=图1, caption=
总体框架图, figureFileSmall=W7sZWF3gAhZStkULhWaIhw==, figureFileBig=PnlYjp1XX3KAjUt8GlIhsw==, tableContent=null), ArticleFig(id=1241038870792433730, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=EN, label=Fig.2, caption=
Rigid-flexible coupling model of the caving coal hydraulic support, figureFileSmall=Xxq4rFWhvJGV1PG9wsnNrQ==, figureFileBig=M1A8GgdOZuklthruHuzlSw==, tableContent=null), ArticleFig(id=1241038870893097034, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=CN, label=图2, caption=
放顶煤液压支架刚柔耦合模型, figureFileSmall=Xxq4rFWhvJGV1PG9wsnNrQ==, figureFileBig=M1A8GgdOZuklthruHuzlSw==, tableContent=null), ArticleFig(id=1241038871002148947, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=EN, label=Fig.3, caption=
Four shapes and sizes of coal and gangue particles in the simulation, figureFileSmall=ozLs/8sQI1ucjsB65Bn3oA==, figureFileBig=PBJrpJ6APXoisZf+/YQx9g==, tableContent=null), ArticleFig(id=1241038871228641368, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=CN, label=图3, caption=
仿真中煤和矸石颗粒的4种形状及大小, figureFileSmall=ozLs/8sQI1ucjsB65Bn3oA==, figureFileBig=PBJrpJ6APXoisZf+/YQx9g==, tableContent=null), ArticleFig(id=1241038871870369885, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=EN, label=Fig.4, caption=
Finite element and discrete element coupling simulation of the top coal caving, figureFileSmall=gZSrWdO2cWyLTbvbP9c3QA==, figureFileBig=roJyXNSkebI3EDSIYzOq9w==, tableContent=null), ArticleFig(id=1241038872281411683, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=CN, label=图4, caption=
放顶煤有限元与离散元耦合模拟, figureFileSmall=gZSrWdO2cWyLTbvbP9c3QA==, figureFileBig=roJyXNSkebI3EDSIYzOq9w==, tableContent=null), ArticleFig(id=1241038872507904110, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=EN, label=Fig.5, caption=
Acceleration curve of the tail beam obtained by coupling simulation of the top coal caving, figureFileSmall=NVOF/lbyqB7quT/3hqEGWQ==, figureFileBig=VUF/olNsLCZ3d/OXnkVuRQ==, tableContent=null), ArticleFig(id=1241038872616956020, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=CN, label=图5, caption=
耦合模拟放顶煤得到的尾梁加速度曲线, figureFileSmall=NVOF/lbyqB7quT/3hqEGWQ==, figureFileBig=VUF/olNsLCZ3d/OXnkVuRQ==, tableContent=null), ArticleFig(id=1241038872713425019, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=EN, label=Fig.6, caption=
t-SNE dimension reduction diagram of each feature after VMD decomposition of the simulation data, figureFileSmall=S39CNv4JUTr9+LCBRgdfhQ==, figureFileBig=7So5tM+46ksLHVBlnzRHLg==, tableContent=null), ArticleFig(id=1241038872948306046, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=CN, label=图6, caption=
模拟数据VMD分解后各特征t-SNE降维图, figureFileSmall=S39CNv4JUTr9+LCBRgdfhQ==, figureFileBig=7So5tM+46ksLHVBlnzRHLg==, tableContent=null), ArticleFig(id=1241038873069940868, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=EN, label=Fig.7, caption=
Overall diagram of the top coal caving bench, figureFileSmall=oHdwK4QO7dE1w2s8IX3EjA==, figureFileBig=3ozsZufdNR74ppQoM51lFw==, tableContent=null), ArticleFig(id=1241038873262878860, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=CN, label=图7, caption=
放顶煤试验台总体图, figureFileSmall=oHdwK4QO7dE1w2s8IX3EjA==, figureFileBig=3ozsZufdNR74ppQoM51lFw==, tableContent=null), ArticleFig(id=1241038873405485199, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=EN, label=Fig.8, caption=
Acceleration curve of the tail beam obtained by the top coal caving test, figureFileSmall=BHGmHa0wOmlGPurqXK2Wzw==, figureFileBig=IfzJCZ9I6HqLYiuEtqADIQ==, tableContent=null), ArticleFig(id=1241038873506148500, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=CN, label=图8, caption=
放顶煤试验得到的尾梁加速度曲线, figureFileSmall=BHGmHa0wOmlGPurqXK2Wzw==, figureFileBig=IfzJCZ9I6HqLYiuEtqADIQ==, tableContent=null), ArticleFig(id=1241038873640366234, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=EN, label=Fig.9, caption=
t-SNE dimension reduction diagram of each feature after VMD decomposition of the test data, figureFileSmall=GNHCWUhByYVGNo3nrMFpjg==, figureFileBig=1JU+ehmaKnBkZ9QSRmJrbQ==, tableContent=null), ArticleFig(id=1241038874001076383, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=CN, label=图9, caption=
试验数据VMD分解后各特征t-SNE降维图, figureFileSmall=GNHCWUhByYVGNo3nrMFpjg==, figureFileBig=1JU+ehmaKnBkZ9QSRmJrbQ==, tableContent=null), ArticleFig(id=1241038874084962471, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=EN, label=Tab.1, caption=
Particle bonding parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
颗粒黏结参数 Particle bonding parameter | 值 Value |
|---|
单位面积切向应力 Tangential stress per unit area/Pa | 6.0×106 |
单位面积法向应力 Normal stress per unit area/Pa | 2.0×107 |
单位面积切向刚度 Tangential stiffness per unit area/(N/m3) | 3.0×107 |
单位面积法向刚度 Normal stiffness per unit area/(N/m3) | 5.0×107 |
), ArticleFig(id=1241038874177237164, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=CN, label=表1, caption=
颗粒黏结参数
, figureFileSmall=null, figureFileBig=null, tableContent=
颗粒黏结参数 Particle bonding parameter | 值 Value |
|---|
单位面积切向应力 Tangential stress per unit area/Pa | 6.0×106 |
单位面积法向应力 Normal stress per unit area/Pa | 2.0×107 |
单位面积切向刚度 Tangential stiffness per unit area/(N/m3) | 3.0×107 |
单位面积法向刚度 Normal stiffness per unit area/(N/m3) | 5.0×107 |
), ArticleFig(id=1241038874420506802, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=EN, label=Tab.2, caption=
Particle mechanical parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
颗粒类别 Particle type | 密度 Density/(kg/m3) | 泊松比 Poisson’s ratio | 剪切模量 Shear modulus/Pa |
|---|
| 煤Coal | 1.5×103 | 0.3 | 2×108 |
| 矸Gangue | 2.59×103 | 0.123 | 1.35×1010 |
), ArticleFig(id=1241038874655387827, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=CN, label=表2, caption=
颗粒力学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
颗粒类别 Particle type | 密度 Density/(kg/m3) | 泊松比 Poisson’s ratio | 剪切模量 Shear modulus/Pa |
|---|
| 煤Coal | 1.5×103 | 0.3 | 2×108 |
| 矸Gangue | 2.59×103 | 0.123 | 1.35×1010 |
), ArticleFig(id=1241038874911240375, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=EN, label=Tab.3, caption=
Motion coefficient of particles
, figureFileSmall=null, figureFileBig=null, tableContent=
| 颗粒恢复系数 Restitution coefficient of particles | 颗粒静摩擦因 数Static friction coefficient of particles | 颗粒动摩擦因 数Dynamic friction coefficient of particles |
|---|
| 煤-煤Coal-Coal | 0.5 | 0.6 | 0.1 |
| 煤-矸Coal-Gangue | 0.5 | 0.6 | 0.05 |
| 矸-矸Gangue-Gangue | 0.5 | 0.65 | 0.1 |
煤-液压支架 Coal-Hydraulic support | 0.5 | 0.4 | 0.1 |
矸-液压支架 Gangue-Hydraulic support | 0.5 | 0.4 | 0.1 |
), ArticleFig(id=1241038874986737854, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=CN, label=表3, caption=
颗粒运动系数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 颗粒恢复系数 Restitution coefficient of particles | 颗粒静摩擦因 数Static friction coefficient of particles | 颗粒动摩擦因 数Dynamic friction coefficient of particles |
|---|
| 煤-煤Coal-Coal | 0.5 | 0.6 | 0.1 |
| 煤-矸Coal-Gangue | 0.5 | 0.6 | 0.05 |
| 矸-矸Gangue-Gangue | 0.5 | 0.65 | 0.1 |
煤-液压支架 Coal-Hydraulic support | 0.5 | 0.4 | 0.1 |
矸-液压支架 Gangue-Hydraulic support | 0.5 | 0.4 | 0.1 |
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Average silhouette coefficient of the feature set of simulated vibration signals
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能量 Energy | 能量矩 Energy moment | 奇异值 Singular value | 峰值因子 Crest factor | 裕度因子 Margin factor |
|---|
| 0.34 | -0.002 4 | 0.38 | 0.05 | 0.03 |
峭度 Kurtosis | 频率均值 Mean frequency | 峰值频率 Peak frequency | 谱心频率 Frequency of spectral centroid | 频率方差 Frequency variance |
| 0.03 | 0.18 | 0.18 | 0.23 | 0.22 |
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模拟振动信号特征集平均轮廓系数
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能量 Energy | 能量矩 Energy moment | 奇异值 Singular value | 峰值因子 Crest factor | 裕度因子 Margin factor |
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| 0.34 | -0.002 4 | 0.38 | 0.05 | 0.03 |
峭度 Kurtosis | 频率均值 Mean frequency | 峰值频率 Peak frequency | 谱心频率 Frequency of spectral centroid | 频率方差 Frequency variance |
| 0.03 | 0.18 | 0.18 | 0.23 | 0.22 |
), ArticleFig(id=1241038875657826505, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=EN, label=Tab.5, caption=
Average silhouette coefficient of the feature set of test vibration signals
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能量 Energy | 能量矩 Energy moment | 奇异值 Singular value | 峰值因子Crest factor | 裕度因子 Margin factor |
|---|
| 0.19 | 0.001 | 0.21 | 0.04 | 0.03 |
峭度 Kurtosis | 频率均值 Mean frequency | 峰值频率 Peak frequency | 谱心频率 Frequency of spectral centroid | 频率方差 Frequency variance |
| 0.04 | 0.17 | 0.18 | 0.22 | 0.21 |
), ArticleFig(id=1241038875905290447, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038856494052037, language=CN, label=表5, caption=
试验振动信号特征集平均轮廓系数
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能量 Energy | 能量矩 Energy moment | 奇异值 Singular value | 峰值因子Crest factor | 裕度因子 Margin factor |
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| 0.19 | 0.001 | 0.21 | 0.04 | 0.03 |
峭度 Kurtosis | 频率均值 Mean frequency | 峰值频率 Peak frequency | 谱心频率 Frequency of spectral centroid | 频率方差 Frequency variance |
| 0.04 | 0.17 | 0.18 | 0.22 | 0.21 |
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