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Theoretical and Experimental Research for Active Flutter Suppression

Research Project

Project/Area Number 60550038
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Aerospace engineering
Research InstitutionNagoya University

Principal Investigator

OHTA Hirobumi  Assistant Professor/Faculty of Engineering/Nagoya University/, 工学部, 講師 (00023317)

Project Period (FY) 1985 – 1986
Project Status Completed (Fiscal Year 1986)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1986: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1985: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsActive Flutter Suppression / ACT / Robust Control / Flight Control / Aeroelasticity / 突風荷重軽減
Research Abstract

The objective of this research is to examine a mathematical model of aeroelastic systems and to develop a design method of robust reduced-order controllers for active flutter suppression(AFS). The wind-tunnel model used in the study is a rectangular cantilever wing whose elastic axis is given by a straight cross beam of Aluminium with equal thickness. The measurement variables are the trailing-edge flap angle, acceleration of the wing tip, and elastic displacement from strain gauges. Measurement data are digitally processed using C language, which contributes to both flexibility of software and speed-up of the sampling period. After structural properties of the model were determined, flutter test was done using a low speed wind-tunnel. These results give us useful information for designing wind-tunnel models and for developing mathematical models of AFS systems. Several theoretical approaches for designing AFS controllers are examined and compared as well. It is shown that the Nyquist frequency approximation method developed in the study yields a reduced-order controller with better stability margin than other methods.

Report

(1 results)
  • 1986 Final Research Report Summary
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 太田裕文: 日本航空宇宙学会誌. 33. 467-476 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 藤森篤: 日本航空宇宙学会第24回飛行機シンポジウム講演集. 350-353 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 太田裕文: 計測自動制御学会第3回宇宙航空の誘導制御シンポジウム講演集. 95-100 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 太田裕文: 日本航空宇宙学会誌. 35. 127-135 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 藤森篤: 日本航空宇宙学会誌.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 太田裕文: 日本航空宇宙学会誌.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Hirobumi Ohta: "On the Feedback Variables for Flutter Suppression of a Two-Dimensional Airfoil" J. of the Japan Society for Aeronautical and Space Sciences. 33. 467-476 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Hirobumi Ohta: "Robust Designs for Flight Control Systems" J. of the Japan Society for Aeronautical and Space Sciences. 35. 127-135 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Atsushi Fujimori: "Synthesis of Reduced-Order Controllers for Active Flutter Suppression" J. of the Japan Society for Aeronautical and Space Sciences. 35. (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Hirobumi Ohta: "Production of Atmospheric Gust at Wind-Tunnels and Estimation of Its Model" J. of the Japan Society for Aeronautical and Space Sciences.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary

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Published: 1987-03-31   Modified: 2016-04-21  

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