Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Reliability Allocation for KTX Door System

KTX 승강문 시스템의 신뢰도 배분

  • Jang, Mu-Seong (Reliability Assessment Center, Korea Institute of Machinery and Materials) ;
  • Choi, Byung Oh (Reliability Assessment Center, Korea Institute of Machinery and Materials) ;
  • Lee, Jeong Hun (KORAIL Research Institute)
  • 장무성 (한국기계연구원 신뢰성평가센터) ;
  • 최병오 (한국기계연구원 신뢰성평가센터) ;
  • 이정훈 (한국철도공사 연구원)
  • Received : 2014.03.10
  • Accepted : 2014.06.03
  • Published : 2014.10.01
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Abstract

Reliability allocation is generally used during the early stage of system development to apportion the system reliability target to its individual modules. This paper presents a comprehensive method for performing the reliability allocation of KTX door systems. Nine criteria for reliability allocation include failure criticality, operating time, risk, complexity, failure rate, maintenance, manufacturing technology, working condition, and reliability cost. For satisfying the system reliability target, the allocated $B_{10}$ lives of four modules are provided.

일반적으로 신뢰도 배분은 시스템 개발 초기단계에 시스템의 신뢰도 목표 값을 하위 모듈에 배분하기 위해 사용된다. 본 연구에서는 KTX 승강문 시스템의 목표 신뢰도를 하위 모듈에 배분하기 위해 Comprehensive 배분방법을 제시한다. Comprehensive 배분방법은 시스템의 신뢰도를 배분하기 위해 각 모듈에 대한 고장의 중요도, 작동시간 비율, 위험도, 복잡도, 고장률, 수리/정비성, 개발완성도, 사용환경 가혹도, 신뢰도 달성비용의 평가항목을 고려한다. 승강문 시스템의 목표 신뢰도를 만족하기 위해서 시스템을 구성하는 4 가지 모듈의 $B_{10}$ 수명을 제시한다.

Keywords

References

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