Fault Diagnosis of a Refrigeration System Based on Petri Net Model

페트리네트 모델을 이용한 냉동시스템의 고장 진단

  • 정석권 (부경대학교 기계공학부) ;
  • 윤종수 (부경대학교 대학원 냉동공조공학과)
  • Published : 2005.11.30

Abstract

In this paper, we proposes a man-machine interface design for fault diagnosis system with inter-node search method in a Petri net model. First, complicated fault cases are modeled as the Petri net graph expressions. Next, to find out causes of the faults on which we focus, a Petri net model is analyzed using the backward reasoning of transition-invariance in the Petri net. In this step, the inter-node search method algorithm is applied to the Petri net model for reducing the range of sources in faults. Finally, the proposed method is applied to a fault diagnosis of a refrigeration system to confirm the validity of the proposed method.

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