Reliable Decentralized Failure Diagnosis for Design of Discrete Event Systems

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560547
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Control engineering
• Research Institution: Osaka University
• Principal Investigator: TAKAI Shigemasa 大阪大学, 工学(系)研究科(研究院), 教授 (60243177)
• Research Collaborator: NOMURA Masashi ; YOKOTANI Misato ; NAM Vu TUNG ; KANAGAWA Naoki ; KIMURA Katsuyuki ; YAMAMOTO Takashi ; YOKOTA Shoichi
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: システム理論 / 離散事象システム / 分散型故障診断 / スーパバイザ制御 / リライアビリティ

Outline of Final Research Achievements

Theoretical results have been obtained to establish a theory for reliable decentralized failure diagnosis of networked discrete event systems. It may be possible that some local diagnosis decisions are not available, due to some reasons including breakdown of local diagnosers and disconnection of the network. Motivated by this, an algorithm is developed for verifying whether the system is diagnosable even if some of the diagnosis decisions are not available. In addition, an algorithm is presented for computing the maximum detection delay of a failure in such a case. As related work, theoretical results on failure diagnosis subject to sensor failures and supervisory control have also been obtained.

Free Research Field

システム理論