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2004 Fiscal Year Final Research Report Summary

Development of Automatic Position Adjustable Elevator for Workboat

Research Project

Project/Area Number 14350527
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 海洋工学
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

NAKAMURA Masahiko  KYUSHU UNIVERSITY, Research Institute for Applied Mechanics, Associate Professor, 応用力学研究所, 助教授 (40155859)

Co-Investigator(Kenkyū-buntansha) KOTERAYAMA Wataru  KYUSHU UNIVERSITY, Research Institute for Applied Mechanics, Professor, 応用力学研究所, 教授 (80038562)
KAJIWARA Hiroyuki  KYUSHU UNIVERSITY, Research Institute for Applied Mechanics, Professor, 大学院・工学研究院, 教授 (30114862)
YAMAGUCHI Satoru  KYUSHU UNIVERSITY, Research Institute for Applied Mechanics, Associate Professor, 大学院・工学研究院, 助教授 (00253542)
Project Period (FY) 2002 – 2004
KeywordsPosition adjustable elevator / Control / Image processing / workboat / Ocean observation buoy / Ocean platform / Model experiments / 模型実験
Research Abstract

Floating structures, buoy systems and ocean platforms are widely used in oceanographic investigation and observations. The operators have to carry out steady maintenance to assure high quality data. However, it is difficult and dangerous to move from a workboat to a platform because both are swung by ocean waves.
We developed an automatic position adjustable elevator to realize easy and safe passage. The elevator attached to the workboat is controlled to reduce the relative displacement between the workboat and the other structure. The relative displacement is measured by image processing technique and is sent to the controller of the elevator. The camera houses a 1/2" monochrome progressive scan CCD chip. The frame rate is 60 fps (max) and the number of pixels is 659(h)×494(v). The image processing is performed by the software (in this research, HALCON by MVTec software GmbH was used) installed in the personal computer without using the conventional exclusive image processing board.
Model experiments were carried out to verify the performance of the system and successful results were obtained. In addition, robustness of the image processing was researched.

  • Research Products

    (11 results)

All 2005 2004 2003

All Journal Article (11 results)

  • [Journal Article] 画像処理を利用した海洋構造物模型の波浪中運動計測(その2 運動計測範囲の拡張と3次元運動計測)2005

    • Author(s)
      中村昌彦, 梶原宏之
    • Journal Title

      西部造船会会報 109

      Pages: 13-24

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 画像処理による運動計測のロバスト性向上に関する研究2005

    • Author(s)
      中村昌彦, 梶原宏之
    • Journal Title

      日本造船学会第18回海洋工学シンポジウム

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Development of Automatic Position Adjustable Elevator for Workboat2005

    • Author(s)
      M.Nakamura, H.Kajiwara
    • Journal Title

      Proc.of the 15^<th> Int.Offshore and Polar Engineering Conference

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Model Experiments on Motion Measurement of Floating Structure by Image Processing Technique (Part2, Utilization of Mosaic Image and 3D Motion Measurement)2005

    • Author(s)
      M.Nakamura, H.Kajiwara, T.Manabe
    • Journal Title

      Transactions of the West-Japan Society of Naval Architects No.109

      Pages: 13-24

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Improving Robustness of Motion Measurement by Image Processing Technique2005

    • Author(s)
      M.Nakamura, H.Kajiwara
    • Journal Title

      18^<th> Ocean Engineering Symposium, The Society of Naval Architects of Japan

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 画像処理を利用した海洋構造物模型の波浪中運動計測2004

    • Author(s)
      中村昌彦, 梶原宏之
    • Journal Title

      西部造船会会報 108

      Pages: 73-83

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Position Control of Floating Structure by Neural-Net Controller2004

    • Author(s)
      M.Nakamura, T.Shima
    • Journal Title

      Proc.of the 14^<th> Int.Offshore and Polar Engineering Conference

      Pages: 359-365

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Model Experiments on Motion Measurement of Floating Structure by Image Processing Technique2004

    • Author(s)
      M.Nakamura, H.Kajiwara
    • Journal Title

      Transactions of the West-Japan Society of Naval Architects No.108

      Pages: 73-83

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Position Control of Floating Structure by Neural-Net Controller2004

    • Author(s)
      M.Nakamura, T.Shima
    • Journal Title

      Proc.of the 14th Int.Offshore and Polar Engineering Conference

      Pages: 359-365

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Depth Control of an Underwater Vehicle Using Linear Parameter-varying Techniques2003

    • Author(s)
      R.Gao, E.Kondo, H.Kajiwara, W.Koterayama, M.Nakamura
    • Journal Title

      Int.Journal of Offshore and Polar Engineering Vol.13, No.1

      Pages: 52-59

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Depth Control of an Underwater Vehicle Using Linear Parameter-varying Techniques2003

    • Author(s)
      R.Gao, E.Kondo, H.Kajiwara, W.Koterayama, M.Nakamura
    • Journal Title

      Int.Journal of Offshore and Polar Engineering Vo1.13, No.1

      Pages: 52-59

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 2006-07-11  

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