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Improvement of a model based diagnosis method using a force identification technique that can be applied for large structures

Research Project

Project/Area Number 24560259
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Dynamics/Control
Research InstitutionToyohashi University of Technology

Principal Investigator

KAWAMURA Shozo  豊橋技術科学大学, 工学(系)研究科(研究院), 教授 (00204777)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords異常診断 / モード解析 / 逆問題 / 特異値分解 / 外力同定 / モデル修正 / 伝達経路解析
Outline of Final Research Achievements

Machine condition monitoring and diagnosis have become increasingly important. It is generally considered that larger numbers of sensors will supply useful information for diagnosis, although the number of sensors is limited in actual applications. In this study, a method of virtual measurement at many points of the structure is proposed. Two methods are proposed. A method is based on the modal analysis using the measured displacements, in which the displacement of the overall structure is approximated using natural vibration modes whose number is the same as that of sensors. The other method is also based on the modal analysis, though the displacements used for the approximation are modified by the displacement ratio between the actual measurement and the simulated one. As the results, it was recognized that the proposed method based on the displacement ratio is useful for virtual measurements with small variance of identification result using the experimental data.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (3 results)

All 2014 2012

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (2 results)

  • [Journal Article] Improvement of a stepwise primary diagnosis method of a beam structure using a force identification technique (Proposition of virtual measurement)2014

    • Author(s)
      Shozo KAWAMURA, Yuki TATE, Hirofumi MINAMOTO
    • Journal Title

      Mechanical Engineering Journal

      Volume: 1 Issue: 2 Pages: DR0007-DR0007

    • DOI

      10.1299/mej.2014dr0007

    • NAID

      130003398614

    • ISSN
      2187-9745
    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] 外力同定を援用したモデルベース診断手法の改良について(近似的に測定データを増加させる手法の提案)2014

    • Author(s)
      河村庄造,舘 祐貴,感本広文
    • Organizer
      日本機械学会 Dynamics and Design Conference 2014
    • Place of Presentation
      上智大学
    • Year and Date
      2014-08-27
    • Related Report
      2014 Annual Research Report
  • [Presentation] 外力同定を援用したモデルベース診断手法の改良について(近似的に測定データを増加させた場合の診断精度への影響)2012

    • Author(s)
      河村庄造
    • Organizer
      日本機械学会 第11回評価・診断に関するシンポジウム
    • Place of Presentation
      川崎市産業振興会館
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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