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	Condition-based switching and replacement policies for a two-unit warm standby redundant system subject to non-instantaneous switchover
	Yunpeng Jiang ; Maoyin Chen ; Donghua Zhou ; Yunpeng Jiang ; Maoyin Chen ; Donghua Zhou
	2016-03-30 ; 2016-03-30
关键词	Condition-based maintenance Warm standby redundant system Non-instantaneous switchover Continuous monitoring Gamma process TP274
其他题名	Condition-based switching and replacement policies for a two-unit warm standby redundant system subject to non-instantaneous switchover
中文摘要	This study investigates condition-based switching and replacement policies for a two-unit warm standby redundant system subject to non-instantaneous switchover. The system consists of two identical units: one is operating unit, while the other is standby unit. Two units are under continuous monitoring and degradation described by Gamma processes. Both switching and replacement policies are based on the degradation level of the operating unit. The switching and replacement thresholds are decision variables decided by minimizing the long-run expected cost rate. We first setup the mathematical optimization model and then analyze the global optimal solution of replacement threshold, as well as the existence and uniqueness condition for the local optimal solution of switching threshold(STH). Finally, we find that the optimal replacement threshold is ‘‘the bigger the better'', but the optimal STH depends on some optimal conditions which can be easily computed. Numerical examples are provided to verify the policies, and the effects of noninstantaneous switchover and cost ratio on optimal STHs are numerically discussed.; This study investigates condition-based switching and replacement policies for a two-unit warm standby redundant system subject to non-instantaneous switchover. The system consists of two identical units: one is operating unit, while the other is standby unit. Two units are under continuous monitoring and degradation described by Gamma processes. Both switching and replacement policies are based on the degradation level of the operating unit. The switching and replacement thresholds are decision variables decided by minimizing the long-run expected cost rate. We first setup the mathematical optimization model and then analyze the global optimal solution of replacement threshold, as well as the existence and uniqueness condition for the local optimal solution of switching threshold(STH). Finally, we find that the optimal replacement threshold is ‘‘the bigger the better'', but the optimal STH depends on some optimal conditions which can be easily computed. Numerical examples are provided to verify the policies, and the effects of noninstantaneous switchover and cost ratio on optimal STHs are numerically discussed.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/147163]
专题	清华大学
推荐引用方式 GB/T 7714	Yunpeng Jiang,Maoyin Chen,Donghua Zhou,et al. Condition-based switching and replacement policies for a two-unit warm standby redundant system subject to non-instantaneous switchover[J],2016, 2016.
APA	Yunpeng Jiang,Maoyin Chen,Donghua Zhou,Yunpeng Jiang,Maoyin Chen,&Donghua Zhou.(2016).Condition-based switching and replacement policies for a two-unit warm standby redundant system subject to non-instantaneous switchover..
MLA	Yunpeng Jiang,et al."Condition-based switching and replacement policies for a two-unit warm standby redundant system subject to non-instantaneous switchover".(2016).

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