Journal of the Korean Institute of Telematics and Electronics B (전자공학회논문지B)
- Volume 32B Issue 12
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- Pages.1687-1696
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- 1995
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- 1016-135X(pISSN)
Development of a Knowledge Representation Scheme and Diagnosis Mechanism for Heterogeneous Distributed Fault Diagnosis
이종분산 고장 진단을 위한 지식표현 방법 및 진단 방법의 개발
Abstract
An integrated fault diagnosis system for heterogeneous manufacturing environments is developed. This system has a contrast with existing diagnosis systems in the respect that they are mostly for diagnosing faults on individual machines. In addition to the usual (e.g., audio, electrical) diagnostic signals, the characteristics of products from the machines are considered as the unifying diagnostic parameters among heterogeneous machines in the diagnosis. The system is composed of a knowledge representation scheme and a diagnostic query processing mechanism. Its knowledge representation scheme allows the diagnostic knowledges from heterogeneous unit diagnostic systems to be uniformly expressed in terms of the causal relations among relevant data items. It is flexible in the sense that causes for one relation can be effects for another may be reflected on our knowledge representation scheme. The diagnosis mechanism is based on a probabilistic inferencing method. This probablistic diagnosis mechanism provides more general diagnosis than existing ones in that it accommodates multiple causes and takes complication among causes into account. These scheme and mechanism are applied to a typical example to demonstrate how our system works.
Keywords