[1]DONG Xiaoyuan,PENG Zhenrui,YIN Hong,et al.Distance coefficient-Fisher information criterion for optimal sensor placement[J].CAAI Transactions on Intelligent Systems,2017,12(1):32-37.[doi:10.11992/tis.201604026]
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CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
12
Number of periods:
2017 1
Page number:
32-37
Column:
学术论文—机器感知与模式识别
Public date:
2017-02-25
- Title:
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Distance coefficient-Fisher information criterion for optimal sensor placement
- Author(s):
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DONG Xiaoyuan; PENG Zhenrui; YIN Hong; DONG Haitang
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School of Mechatronic Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
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- Keywords:
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optimal sensor placement; damage detection; Fisher information matrix; information redundancy; Euclidean distance; sensitivity analysis; modal analysis
- CLC:
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TP391
- DOI:
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10.11992/tis.201604026
- Abstract:
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For damage parameters identification, when the traditional Fisher information criterion is used for optimal sensor placement, the measuring points are susceptible to gathering in a local sensitivity area, which results in information redundancy and this is not conducive to damage location. To avoid aggregation of the measuring points and improve the ability of the damage location, the distance coefficient, which reflects the degree of information independence, was used first to correct the Fisher information matrix, and then the measuring points were obtained by maximizing the determinant of the modified information matrix using a sequential algorithm. The method was employed to design the optimal sensor configuration for a simple 16-DOF chain mass-spring model. The results show the method can effectively avoid the aggregation of measuring points and solve the problem of information redundancy.