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학술지 Availability Analysis of Series Redundancy Models with Imperfect Switchover and Interrupted Repairs
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저자
심재찬, 류호용, 이유태
발행일
201709
출처
Eksploatacja i Niezawodnosc - Maintenance and Reliability, v.19 no.4, pp.640-649
ISSN
1507-2711
출판사
Polish Maintenance Society
DOI
https://dx.doi.org/10.17531/ein.2017.4.19
협약과제
16MH5100, Non-stop Active Routing을 지원하는 고가용성 네트워크 운영체제 기술개발, 류호용
초록
This paper considers N + 1 series redundancy, where N components are active and 1 component is standby in normal state. The active components execute the service, while the standby component is ready to take over the active role if the active components fail. When an active component fails, the standby, if available, automatically takes over system operations. However, the automatic switchover of the standby component to active mode might not be possible due to hardware or software issues. When a component failure or an imperfect switchover occurs, it immediately begins to be repaired. However, the repair process is possible to be interrupted. The most existing literature of redundancy models has focused on Markovian systems with uninterrupted repairs. This paper considers a non-Markovian redundancy model with interrupted repairs, where the repair time, the non-automatic switchover time, and the interrupted time are generally distributed. Using supplementary variable method and integro-differential equations, we obtain the steady-state availability for the redundancy model.
키워드
Availability, General repair time, Imperfect switchover, Interrupted repair, Series redundancy
KSP 제안 키워드
Active components, Active mode, Automatic switchover, Availability analysis, Component failure, Integro-differential equations, Markovian systems, Non-Markovian, Normal state, Redundancy model, Repair process