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1992 Fiscal Year Final Research Report Summary

STUDY ON DEMAND FORECASTING, INVENTORY CONTROL, AND RELIABILITY DESIGN OF SERVICE PARTS

Research Project

Project/Area Number 02452131
Research Category

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

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

Principal Investigator

YAMASHINA Hajime  KYOTO UNIVERSITY, FACULTY OF ENGINEERING, PROFESSOR, 工学部, 教授 (20026149)

Co-Investigator(Kenkyū-buntansha) INOUE Ichiro  KYOTO SANGYO UNIVERSITY, FACULTY OF BUSINESS ADMINISTRATION, ASSOCIATE PROFESSOR, 経営学部, 助教授
OKUMURA Susumu  KYOTO UNIVERSITY, FACULTY OF ENGINEERING RESEARCH ASSISTANT, 工学部, 助手 (70204146)
KUMAMOTO Hiromitsu  KYOTO UNIVERSITY, FACULTY OF ENGINEERING ASSOCIATE PROFESSOR, 工学部, 助教授 (10109019)
Project Period (FY) 1990 – 1992
Keywordsservice parts / service part demand / part failure characteristic / product still in use quantity / production and inventory control of service parts / simulation model / batch production of service parts / one time production of all time requirement
Research Abstract

1) The equation for seeking service parts demand from the production pattern, product still in use quantity and part failure characteristics, was developed. Service parts demand curves can be classified into eight types based on the production pattern, product still in use quantity and part failure characteristics. Based on this classification, design of part reliability was discussed in order to ease inventory control of service parts.
2) A new forecasting method of service parts demand was developed by identifying product still in use quantity and part failure characteristics based on the production volumes over the production period and the service parts demand up to the forecasting point. The new method makes it possible to forecast the future service part demand with a practically acceptable accuracy.
3) Based on the forecasting method, a new production and inventory control method for service parts was proposed. The new method has proved to give much better performances in terms of directly delivery rate, from stock and stock level.
4) A new method to determine on optimal quantity for one time production of all time requirement was developed, taking into consideration the errors of identifying the product still-in-use quantity and part failure characteristics.
5) Based on the above method in 4), a new simulation program for determining the optimal period for one time production of all time requirement was developed.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Hajime Yamashina: "Failure Diagnosis of a Servovalve by Neural Networks with New Learning Algorithm and Structure Analysis." International Journal of Production Research. Vol.28. 1009-1021 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山品 元: "方向制御弁のニューラルネットワークによる故障診断" 精密工学会誌. Vol.56. 2291-2296 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山品 元: "ニューラルネットワークによる機械要素の故障診断" 日本設備管理学会誌. Vol.3. 10-19 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山品 元: "Vベルトのクロススペクトル法と判別関数法による故障診断" 精密工学会誌. Vol.57. 1965-1970 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山品 元: "複数の目的特性を考慮したパラメータ設計法" 精密工学会誌. Vol.58. 516-520 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山品 元: "一括生産によるサービス部品生産・在庫計画法の展開" 精密工学会誌. (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hajime Yamashina, Hiromitsu Kumamoto, Susumu Okumura and Takahiro Ikesaki: "Failure Diagnosis of a Servovalve by Neural Networks with New Learning Algorithm and Structure Analysis" International Journal of Production Research. Vol.28, No.6. 1009-1021 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hajime Yamashina, Hiromitsu Kumamoto, Susumu Okumura and Takahiro Ikesaki: "Failure Diagnosis of Pneumatic Directional Control Valve by Neural Networks" Journal of the Japan Society of Precision Engineering. Vol.56, No.12. 2291-2296 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hajime Yamashina, Hiromitsu Kumamoto, Susumu Okumura and Takahiro Ikesaki: "Failure Diagnosis of Machine Elements by Neural Networks" Society of Plant Engineers Japan. Vol.3,No.1. 10-19 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hajime Yamashna, Susumu Okumura and Isao Kawai: "Failure Diagnosis of V-Belt by Cross-Spectrum Method and Discriminant Function Approach" Journal of the Japan Society of Precision Engineering. Vol.57, No.11. 1965-1970 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hajime Yamashina, Susumu Okumura and Yoshimasa Kondo: "Para-meter Design with Multi Objective Characteristics" Journal of the Japan Society of Precision Engineering. Vol.58, No.3. 516-520 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hajime Yamashina, Susumu Okumura and Nobuhiko Kano: "Production and Inventory Control of Service Parts by Batch Production" Journal of the Japan Society of Precision Engineering.

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

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Published: 1994-03-24  

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