Article(id=1241038859253904110, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1241038854333985467, articleNumber=null, orderNo=null, doi=10.16579/j.issn.1001.9669.2025.01.008, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1715529600000, receivedDateStr=2024-05-13, revisedDate=1718035200000, revisedDateStr=2024-06-11, acceptedDate=null, acceptedDateStr=null, onlineDate=1773816321433, onlineDateStr=2026-03-18, pubDate=1736870400000, pubDateStr=2025-01-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773816321433, onlineIssueDateStr=2026-03-18, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773816321433, creator=13701087609, updateTime=1773816321433, 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=68, endPage=75, ext={EN=ArticleExt(id=1241038859597837048, articleId=1241038859253904110, tenantId=1146029695717560320, journalId=1227999626482147330, language=EN, title=Research on optimal arrangement strategy of top coal caving support sensors based on vibration characteristics of coal and gangue, columnId=1228282192162390694, journalTitle=Journal of Mechanical Strength, columnName=Experimental Research·Testing Technology, runingTitle=null, highlight=null, articleAbstract=
Aiming at the research on intelligent identification of caving coal and gangue, in order to provide a complete and effective vibration signal acquisition scheme of coal and gangue, an optimal layout strategy of tail beam sensors of caving coal hydraulic supports based on vibration characteristics of coal and gangue was proposed. Firstly, the modal analysis of the tail beam model was carried out, extracting the vibration mode matrix,and the effective independent method was used to select the measuring points. Secondly, the vibration signals of coal falling and gangue falling at the corresponding primary measuring points from the tail beam test bench were obtained, and the feature extraction was carried out. Thirdly, the extracted features were visualized by t-distributed stochastic neighbor embedding(t-SNE) dimensionality reduction, and five features which were sensitive to the distinction between coal and gangue signals were selected as target features. Finally, the probability density functions of target features were estimated by the kernel density estimation method. The K-L(Kullback-Leibler) divergence was used to evaluate the approximation between combined signal of each measuring point and the complete signal and the difference between characteristics of coal and gangue. The evaluation indexes of coal and gangue vibration signals were constructed. Combined with Fisher information matrix criterion, a comprehensive evaluation index was formed to determine the optimal scheme of tail beam sensor arrangement. The results show that the sensor arrangement scheme determined by this method not only reduces the number of sensors on the basis of satisfying modal observability, but also makes the measured vibration signals have better coal gangue difference and information integrity.
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针对放顶煤煤矸智能识别研究,为提供完整且有效的煤矸振动信号采集方案,提出了一种基于煤矸振动特性的放顶煤液压支架尾梁传感器优化布置策略。首先,对尾梁模型进行模态分析,提取振型矩阵,利用有效独立法初选测点;其次,获取尾梁试验台相应初选测点的落煤和落矸振动信号,进行特征提取;然后,对所提取特征进行t分布式随机邻域嵌入(t-distributed Stochastic Neighbor Embedding,t-SNE)降维可视化,筛选出5个对落煤和落矸信号区分敏感的特征,并以此作为目标特征;最后,经核密度估计法估算目标特征的概率密度函数,利用K-L(Kullback-Leibler)散度评估各测点组合信号与完整信号的近似性和煤矸特征的差异性,构建煤矸振动信号评价指标,结合Fisher信息矩阵准则,形成综合评价指标,确定尾梁的传感器布置最优方案。结果表明,该方法在满足模态可观测性的基础上不仅减少了传感器数量,还使得所测振动信号具有更好的煤矸差异性和信息完整性。
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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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王瑶,女,1999年生,山西晋城人,硕士研究生;主要研究方向为传感器优化布置;E-mail:wy131523923@sina.com。
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王瑶,女,1999年生,山西晋城人,硕士研究生;主要研究方向为传感器优化布置;E-mail:wy131523923@sina.com。
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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, 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
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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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3.National Key Laboratory of Intelligent Mining Equipment Technology, Xuzhou 221116, China), AuthorCompanyExt(id=1241038866761708454, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038859253904110, companyId=1241038866744931237, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Model of the bench and the finite element model of the tail beam, figureFileSmall=Eh+WPSJxIDXrAB0Nsdsxxg==, figureFileBig=0cS+eyY7W+gox+9Ub/oB5Q==, tableContent=null), ArticleFig(id=1241038873229324426, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038859253904110, language=CN, label=图1, caption=
试验台模型及尾梁有限元模型, figureFileSmall=Eh+WPSJxIDXrAB0Nsdsxxg==, figureFileBig=0cS+eyY7W+gox+9Ub/oB5Q==, tableContent=null), ArticleFig(id=1241038873531314326, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038859253904110, language=EN, label=Fig.2, caption=
Modal vibration mode of the finite element model of the tail beam, figureFileSmall=WwTjpbfM16MNQ0Vs3KIE4A==, figureFileBig=UftcezLwSpNU4vvIzTPAcg==, tableContent=null), ArticleFig(id=1241038873690697883, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038859253904110, language=CN, label=图2, caption=
尾梁有限元模型模态振型, figureFileSmall=WwTjpbfM16MNQ0Vs3KIE4A==, figureFileBig=UftcezLwSpNU4vvIzTPAcg==, tableContent=null), ArticleFig(id=1241038874001076384, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038859253904110, language=EN, label=Fig.3, caption=
Simulation bench of the top-coal caving, figureFileSmall=PuohcoGCm1o+QZ/Twr/Hog==, figureFileBig=4uyalvyYzsdjQOO+sD7DJg==, tableContent=null), ArticleFig(id=1241038874089156774, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038859253904110, language=CN, label=图3, caption=
放顶煤模拟试验台, figureFileSmall=PuohcoGCm1o+QZ/Twr/Hog==, figureFileBig=4uyalvyYzsdjQOO+sD7DJg==, tableContent=null), ArticleFig(id=1241038874181431469, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038859253904110, language=EN, label=Tab.1, caption=
Location of the primary selection measurement point
, figureFileSmall=null, figureFileBig=null, tableContent=
| 传感器位置编号Number of sensor positions | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|
| 对应模型节点编号Corresponding model node number | 73 | 66 | 38 | 17 | 81 | 71 | 40 | 15 |
| 自由度方向Direction of degree of freedom | Z | Z | Z | Z | Z | Z | Z | Z |
), ArticleFig(id=1241038874416312495, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038859253904110, language=CN, label=表1, caption=
初选测点位置
, figureFileSmall=null, figureFileBig=null, tableContent=
| 传感器位置编号Number of sensor positions | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|
| 对应模型节点编号Corresponding model node number | 73 | 66 | 38 | 17 | 81 | 71 | 40 | 15 |
| 自由度方向Direction of degree of freedom | Z | Z | Z | Z | Z | Z | Z | Z |
), ArticleFig(id=1241038874659582133, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038859253904110, language=EN, label=Tab.2, caption=
Each evaluation index corresponding to the combination of each number of measurement points
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测点数量Number of measurement points | 测点组合方案Combination scheme of measurement points | f1 | f21 | f22 | f2 | f |
|---|
| 1 | 7 | 1 063.73 | 0.044 908 | 0.003 490 | 0.024 199 | 0.028 859 |
| 8 | 3 849.37 | 0.006 705 | 0.003 682 | 0.005 194 | 0.022 056 |
| 4 | 2 541.65 | 0.012 887 | 0.003 089 | 0.007 988 | 0.019 121 |
| 5 | 1 642.07 | 0.001 826 | 0.003 921 | 0.002 873 | 0.010 066 |
| 2 | 4_7 | 1 297.80 | 0.043 193 | 0.003 513 | 0.023 353 | 0.029 038 |
| 7_8 | 1 926.08 | 0.019 484 | 0.003 830 | 0.011 657 | 0.020 094 |
| 4_8 | 2 703.28 | 0.004 759 | 0.003 496 | 0.004 128 | 0.015 969 |
| 3_8 | 1 927.64 | 0.003 833 | 0.003 793 | 0.003 813 | 0.012 257 |
| 3 | 4_7_8 | 1 806.66 | 0.024 545 | 0.003 759 | 0.014 152 | 0.022 066 |
| 3_7_8 | 1 286.41 | 0.013 779 | 0.003 957 | 0.008 868 | 0.014 503 |
| 3_4_7 | 867.82 | 0.017 440 | 0.003 707 | 0.010 574 | 0.014 375 |
| 2_7_8 | 1 284.82 | 0.009 346 | 0.003 881 | 0.006 614 | 0.012 242 |
| 4 | 3_4_7_8 | 1 356.51 | 0.016 134 | 0.003 884 | 0.010 009 | 0.015 951 |
| 2_4_7_8 | 1 355.28 | 0.010 031 | 0.003 838 | 0.006 935 | 0.012 871 |
| 2_3_7_8 | 965.52 | 0.009 026 | 0.003 956 | 0.006 491 | 0.010 721 |
| 1_3_4_8 | 1 361.20 | 0.004 400 | 0.003 951 | 0.004 176 | 0.010 138 |
| 5 | 2_3_4_7_8 | 1 085.47 | 0.009 155 | 0.003 914 | 0.006 535 | 0.011 289 |
| 1_2_3_4_8 | 1 089.05 | 0.004 829 | 0.003 946 | 0.004 387 | 0.009 158 |
| 3_4_5_7_8 | 1 086.00 | 0.004 003 | 0.004 052 | 0.004 027 | 0.008 784 |
| 2_4_5_6_8 | 1 082.27 | 0.003 947 | 0.003 988 | 0.003 968 | 0.008 708 |
| 6 | 2_3_4_5_7_8 | 905.24 | 0.003 879 | 0.004 044 | 0.003 961 | 0.007 926 |
| 1_2_4_5_6_8 | 907.15 | 0.003 841 | 0.003 997 | 0.003 919 | 0.007 892 |
| 1_2_3_4_6_8 | 907.59 | 0.003 609 | 0.004 024 | 0.003 817 | 0.007 792 |
| 2_3_4_5_6_8 | 902.66 | 0.003 598 | 0.004 034 | 0.003 816 | 0.007 770 |
| 7 | 1_2_3_4_5_6_8 | 778.13 | 0.003 653 | 0.004 033 | 0.003 843 | 0.007 251 |
| 1_2_3_4_5_7_8 | 780.20 | 0.002 699 | 0.004 097 | 0.003 398 | 0.006 815 |
| 1_2_4_5_6_7_8 | 779.39 | 0.001 323 | 0.003 998 | 0.002 661 | 0.006 075 |
| 1_3_4_5_6_7_8 | 780.07 | 0.001 202 | 0.004 026 | 0.002 614 | 0.006 031 |
), ArticleFig(id=1241038874907046071, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038859253904110, language=CN, label=表2, caption=
各数量测点组合对应各评价指标
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测点数量Number of measurement points | 测点组合方案Combination scheme of measurement points | f1 | f21 | f22 | f2 | f |
|---|
| 1 | 7 | 1 063.73 | 0.044 908 | 0.003 490 | 0.024 199 | 0.028 859 |
| 8 | 3 849.37 | 0.006 705 | 0.003 682 | 0.005 194 | 0.022 056 |
| 4 | 2 541.65 | 0.012 887 | 0.003 089 | 0.007 988 | 0.019 121 |
| 5 | 1 642.07 | 0.001 826 | 0.003 921 | 0.002 873 | 0.010 066 |
| 2 | 4_7 | 1 297.80 | 0.043 193 | 0.003 513 | 0.023 353 | 0.029 038 |
| 7_8 | 1 926.08 | 0.019 484 | 0.003 830 | 0.011 657 | 0.020 094 |
| 4_8 | 2 703.28 | 0.004 759 | 0.003 496 | 0.004 128 | 0.015 969 |
| 3_8 | 1 927.64 | 0.003 833 | 0.003 793 | 0.003 813 | 0.012 257 |
| 3 | 4_7_8 | 1 806.66 | 0.024 545 | 0.003 759 | 0.014 152 | 0.022 066 |
| 3_7_8 | 1 286.41 | 0.013 779 | 0.003 957 | 0.008 868 | 0.014 503 |
| 3_4_7 | 867.82 | 0.017 440 | 0.003 707 | 0.010 574 | 0.014 375 |
| 2_7_8 | 1 284.82 | 0.009 346 | 0.003 881 | 0.006 614 | 0.012 242 |
| 4 | 3_4_7_8 | 1 356.51 | 0.016 134 | 0.003 884 | 0.010 009 | 0.015 951 |
| 2_4_7_8 | 1 355.28 | 0.010 031 | 0.003 838 | 0.006 935 | 0.012 871 |
| 2_3_7_8 | 965.52 | 0.009 026 | 0.003 956 | 0.006 491 | 0.010 721 |
| 1_3_4_8 | 1 361.20 | 0.004 400 | 0.003 951 | 0.004 176 | 0.010 138 |
| 5 | 2_3_4_7_8 | 1 085.47 | 0.009 155 | 0.003 914 | 0.006 535 | 0.011 289 |
| 1_2_3_4_8 | 1 089.05 | 0.004 829 | 0.003 946 | 0.004 387 | 0.009 158 |
| 3_4_5_7_8 | 1 086.00 | 0.004 003 | 0.004 052 | 0.004 027 | 0.008 784 |
| 2_4_5_6_8 | 1 082.27 | 0.003 947 | 0.003 988 | 0.003 968 | 0.008 708 |
| 6 | 2_3_4_5_7_8 | 905.24 | 0.003 879 | 0.004 044 | 0.003 961 | 0.007 926 |
| 1_2_4_5_6_8 | 907.15 | 0.003 841 | 0.003 997 | 0.003 919 | 0.007 892 |
| 1_2_3_4_6_8 | 907.59 | 0.003 609 | 0.004 024 | 0.003 817 | 0.007 792 |
| 2_3_4_5_6_8 | 902.66 | 0.003 598 | 0.004 034 | 0.003 816 | 0.007 770 |
| 7 | 1_2_3_4_5_6_8 | 778.13 | 0.003 653 | 0.004 033 | 0.003 843 | 0.007 251 |
| 1_2_3_4_5_7_8 | 780.20 | 0.002 699 | 0.004 097 | 0.003 398 | 0.006 815 |
| 1_2_4_5_6_7_8 | 779.39 | 0.001 323 | 0.003 998 | 0.002 661 | 0.006 075 |
| 1_3_4_5_6_7_8 | 780.07 | 0.001 202 | 0.004 026 | 0.002 614 | 0.006 031 |
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Value of the evaluation index corresponding to the optimal scheme in the combination of each number of measurement points
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| 测点数量Number of measurement points | 测点组合最佳方案Best combination scheme of measurement points | ff | f1 | f2 | f |
|---|
| 1 | 7 | 1 063.729 | 1 063.729 | 0.024 199 | 0.028 859 |
| 2 | 4_7 | 2 595.602 | 1 297.801 | 0.023 353 | 0.029 038 |
| 3 | 4_7_8 | 5 419.970 | 1 806.657 | 0.014 152 | 0.022 066 |
| 4 | 3_4_7_8 | 5 426.022 | 1 356.505 | 0.010 009 | 0.015 951 |
| 5 | 2_3_4_7_8 | 5 427.368 | 1 085.474 | 0.006 535 | 0.011 289 |
| 6 | 2_3_4_5_7_8 | 5 431.424 | 905.237 | 0.003 961 | 0.007 926 |
| 7 | 1_2_3_4_5_6_8 | 5 446.901 | 778.128 | 0.003 843 | 0.007 251 |
), ArticleFig(id=1241038875070623940, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241038859253904110, language=CN, label=表3, caption=
各数量测点组合最优方案对应的评价指标值
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| 测点数量Number of measurement points | 测点组合最佳方案Best combination scheme of measurement points | ff | f1 | f2 | f |
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| 1 | 7 | 1 063.729 | 1 063.729 | 0.024 199 | 0.028 859 |
| 2 | 4_7 | 2 595.602 | 1 297.801 | 0.023 353 | 0.029 038 |
| 3 | 4_7_8 | 5 419.970 | 1 806.657 | 0.014 152 | 0.022 066 |
| 4 | 3_4_7_8 | 5 426.022 | 1 356.505 | 0.010 009 | 0.015 951 |
| 5 | 2_3_4_7_8 | 5 427.368 | 1 085.474 | 0.006 535 | 0.011 289 |
| 6 | 2_3_4_5_7_8 | 5 431.424 | 905.237 | 0.003 961 | 0.007 926 |
| 7 | 1_2_3_4_5_6_8 | 5 446.901 | 778.128 | 0.003 843 | 0.007 251 |
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