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Development of Model-based Intelligent Flowmeters

Research Project

Project/Area Number 62850040
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field 機械力学・制御工学
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

HAKOMORI Kyojiro  Tohoku Univ., Faculty of Engr., Professor, 工学部, 教授 (20005242)

Co-Investigator(Kenkyū-buntansha) OGAWA Yutaka  Oval Engr. Co., Ltd., R/D Center, Director, 研究所, 取締役研究本部長
IZAWA Yoshiaki  Tohoku Univ., Faculty of Engr., Res. Assoc., 工学部, 助手 (00143016)
YOSHII Kazuo  Tohoku Univ., Faculty of Engr., Res. Assoc., 工学部, 助手 (70108463)
UCHIYAMA Masaru  Tohoku Univ., Faculty of Engr., Assoc. Prof., 工学部, 助教授 (30125504)
山本 宏  オーバル機器工業, 技術本部, 理事
Project Period (FY) 1987 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 1989: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1988: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1987: ¥2,900,000 (Direct Cost: ¥2,900,000)
KeywordsUnsteady Flow Measurement / Intelligent Flowmeter / Model-based Sensing / Velocity Profile / Beam-scanning LDV / Electromagnetic Flowmeter / Turbulent Flow Line Model / Eccentric Flow Error Compensation / モデルベースト計測 / ビーム走査レーザ流速計 / 渦粘性係数
Research Abstract

1. A model-based intelligent flowmeter with a scanning LDV sensor has been developed. It is to be usable as a standard instantaneous flowmeter for both laminar and turbulent unsteady flows in a pipe.
(1) The LDV sensing part with random access function of measuring points was improved by adding a frequency-shifting mechanism. A structured intelligent software system has been constructed based on the results from the previous research of grant-in aid for scientific research 60550167. The flowmeter system is completed for unsteady laminar flows.
(2) The application range of the standard intelligent flowmeter has successfully extended to turbulent flows by improving tie sensor part and developing a fluid line models for turbulent flows suitable to model-based method. First, we formulate an approximate expression for eddy viscosity including a time-varying unknown parameter by using the exponential law for velocity profiles and the mixing length model. Then we derive a fluid line model conta … More ining the parameter. The extended Kalman filtering technique is applied to the model to yield a nonlinear estimator for simultaneous estimation of the unknown parameter and velocity profiles. An estimation method of eddy viscosity for unsteady flows in a pipe has also been proposed.
(3) A numerical simulator of turbulent flows in a pipe was developed and many experiments for various axially symmetric flow patterns have been done to verify accuracy and reliability of the standard intelligent flowmeter.
2. Importance of the indication error due to axially asymmetric or eccentric flows in a pipe under practical setting conditions was pointed out. An industrial model-based intelligent flowmeter which estimates the eccentric flow pattern and compensates the eccentricity error automatically has been proposed and constructed with an electromagnetic flowmeter as the sensor part. Future research will be directed to the completion of the industrial intelligent flowmeter by introducing multidimensional scanning LDV. Less

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] Fan Liuほか2名: "Estimation of Unsteady Flow Velocity Profile in a Pipe Close to the Entrance." Proc.of the 2nd Int.Symp.on Fluid Control,Measurenent,Mechanics and Flow Visualization,Sheffield. 530-534 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Chunchen Suほか2名: "Model-based Measurement of Unsteady Turbulent Flow in a Pipe" Proc.of the Int.Conf.on Advanced Mechatronics,JSME,Tokyo.839-844 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 粟春晨ほか2名: "管内の非定常な層流と乱流の速度分布の推定" 計測自動制御学会論文集. 26-5. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 粟春晨ほか2名: "管内非定常乱流の渦粘性係数の推定" 計測自動制御学会論文集. 26-5. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 粟春晨ほか2名: "円管内非定常流速分布の統一的線形推定アルゴリズム" 計測自動制御学会論文集. 24-8. 787-793 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 劉凡ほか2名: "円管助走区間内非定常流速プロフィルの非線形推定アルゴリズム" 計測自動制御学会論文集. 24-10. 1010-1015 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Fan Liu, et. al.: "Estimation of Unsteady Flow Velocity Profile in a Pipe Close to the Entrance." Proc. of the 2nd Int. Symp. on Fluid Control, Measurement, Mechanics & Visualization (FLUCOME'88), Sheffield, 530-534, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Chunchen Su, et. al.: "Model-based Measurement of Unsteady Turbulent Flow in a Pipe." Proc. of the Int. Conf. on Advanced Mechatronics (ICAM'89), Tokyo, 839-844, 1889.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Chunchen Su, et. al.: "Estimation of Velocity Profiles for both laminar and Turbulent Unsteady Flows in Pipes." Trans. of the Society of Instrument & Control Engineers., 26-5, 1990.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Chunchen Su, et. al.: "Estimation of Eddy Viscosity for Unsteady Turbulent Flow in Pipes." Trans. of the Society of Instrument & Control Engineers., 26-5, 1990.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Chunchen Su, et. al.: "A Unified Linear Algorithm for Estimation of Velocity Profile of Unsteady Flow in a Circular Pipe." Trans. of the Society of Instrument & Control Engineers., 24-8, 787-793, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Fan Liu, et. al.: "A Nonlinear Algorithm for Estimation of Transient Flow Velocity Profile in the Entrance Region of a Circular Pipe." Trans. of the Society of Instrument & Control Engineers., 24-10, 1010-1015, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Chunchen Suほか2名: "Model-based Measurement of Unsteady Turbu lent Flow in a Pipe." Proc.of the International Conference on Advanced Mechatronics(JSME-ICAM'89),Tokyo.839-844 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 粟春晨ほか2名: "管内の非定常な層流と乱流の速度分布の推定" 計測自動制御学会論文集〔掲載予定〕. 26-5. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 粟春晨ほか2名: "管内の非定常乱流の渦粘性係数の推定" 計測自動制御学会論文集〔掲載予定〕. 26-5. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 粟春晨ほか2名: "乱流渦粘性係数の可同定性" 計測自動制御学会東北支部創立25周年記念学術講演会論文集. 17-18 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 粟春晨ほか2名: "乱流渦粘性係数推定アルゴリズムの漸近安定性" 計測自動制御学会東北支部創立25周年記念学術講演会論文集. 19-20 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 粟春晨ほか2名: "管内非定常乱流の渦粘性係数の推定実験" 第28回計測自動制御学会学術講演会予稿集. 117-118 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 粟春晨 他: 第27回計測自動制御学会学術講演会予稿集. 119-120 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 粟春晨 他: 第27回計測自動制御学会学術講演会予稿集. 121-122 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 粟春晨 他: 第31回自動制御連合講演会前刷. 569-572 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Chunchen Su;et al.: Int.Conference on Advanced Mechatronics,sponsored by JSME(ICAM'89). 1-6 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] Fan Liu;et al.: Proc.of the 2nd Int.Symp.on Fluid-Control,Measurement,Mechanics-and Flow Visualization(FLUCOME'88),Sheffield. 530-534 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 粟春晨 他: 計測自動制御学会論文集. 24. 787-793 (1988)

    • Related Report
      1988 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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