Support technology for safe preventive maintenance of control systems

2020 Fiscal Year Final Research Report

• Project/Area Number: 17K06488
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Control engineering/System engineering
• Research Institution: Tokyo University of Marine Science and Technology
• Principal Investigator: SUYAMA Koichi 東京海洋大学, 学術研究院, 教授 (80226612)
• Project Period (FY): 2017-04-01 – 2021-03-31
• Keywords: 制御システム / メンテナンス / 安全性

Outline of Final Research Achievements

Product liability makes it obligatory for manufacturers to provide an appropriate and effective preventive maintenance procedure for each product. However, the international standards on maintenance, such as IEC 60300-3-11, and well-known references in the fields of safety and dependability engineering do not describe an operating state suitable for safely performing preventive maintenance of control systems. In this research project, an operating state suitable for safely performing preventive maintenance of each subsystem of a control system has been theoretically clarified for the first time. Furthermore, a new control system design for achieving the operating state has been proposed, where the safety of the bidirectional transitions between normal operation and the operating state is guaranteed. This preventive maintenance support technology can be some help for Japanese products to enhance global competitiveness.

Free Research Field

制御工学、システム工学、安全工学、信頼性工学

Academic Significance and Societal Importance of the Research Achievements

国際規格に基づく認証は品質、環境に続く「第3の波」として今まさに押し寄せている。日本の工業製品・プラントにメンテナンスのしやすさという新たな価値を付加する道を開き、製造物責任及び国際規格上、国際競争力を向上させる一助となろう。さらに将来、本支援技術をメンテナンス関連の国際規格に反映させることができれば、その新たな価値は国際規格によりオーサライズされた確固たるものとなり、また、学術的な研究成果に裏付けられた日本の世界に対する大きな貢献にもなる。