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Optimization Problems for Consecutivekoutofn:G Systems
Lei ZHOU Hisashi YAMAMOTO Taishin NAKAMURA Xiao XIAO
Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Vol.E103A
No.5
pp.741748 Publication Date: 2020/05/01 Online ISSN: 17451337
DOI: 10.1587/transfun.2019EAP1126 Type of Manuscript: PAPER Category: Reliability, Maintainability and Safety Analysis Keyword: consecutivekoutofn:G system, optimization problems, optimal number of components, optimal replacement time,
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Summary:
A consecutivekoutofn:G system consists of n components which are arranged in a line and the system works if and only if at least k consecutive components work. This paper discusses the optimization problems for a consecutivekoutofn:G system. We first focus on the optimal number of components at the system design phase. Then, we focus on the optimal replacement time at the system operation phase by considering a preventive replacement, which the system is replaced at the planned time or the time of system failure which occurs first. The expected cost rates of two optimization problems are considered as objective functions to be minimized. Finally, we give study cases for the proposed optimization problems and evaluate the feasibility of the policies.

