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HWAHAK KONGHAK,
Vol.41, No.3, 286-291, 2003
Vol.41, No.3, 286-291, 2003
유향그래프를 이용한 시스템 신뢰성 평가기법 개발
The Development of System Reliability Assessment Methodology Using Directed Graph
유향그래프를 이용한 새로운 신뢰성 평가기법을 제시하였다. 본 기법은 성공을 추적하는 시스템 해석기법으로 시스템을 노드와 아크로 구성된 유향그래프를 사용하여 모델화하였다. 화학공정의 구성요소를 기능적 분류 및 운전 형태별로 계층화하여 구분하고, 그래프 표현을 위해 각각을 기능노드, 작동노드, 논리노드 및 지원노드로 정의하였으며 장치의 작동이나 실패를 모델화한다. 또한 정의된 노드는 신뢰도 평가를 위한 연산식을 가지고 있어 시스템의 신뢰성은 이 유향그래프를 순차적으로 해석하여 예측할 수 있다. 개발된 신뢰성 평가기법을 화학공정의 이송시스템에 적용하였으며, 본 기법이 시스템의 신뢰성해석을 위해 유용하게 사용될 수 있다는 것을 증명하였다.
The new reliability assessment methodology using directed graph is presented. The new methodology is a success-oriented system reliability assessment technique. The system is modeled by directed graph, which is composed of nodes and arcs. The component of chemical process is classified by functional relation and operational type. The node has four classes,
which are function, operation, logic and aid node. The node can be used to model the operation and failure of physical equipments. The system reliability assessment can be evaluated by sequential analysis of the directed graph. The example of transfer system is given. The new methodology has proved to be a valuable and useful method for system reliability assessment.
Keywords:
System Reliability Assessment Methodology; Directed Graph; Success-Oriented System Reliability Assessment
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