Journal
IEEE TRANSACTIONS ON RELIABILITY
Volume 66, Issue 4, Pages 980-988Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TR.2016.2570573
Keywords
Component allocation and sequencing; component distribution and sequencing; heterogeneous system; reliability optimization; series-parallel system; warm standby
Categories
Funding
- National Natural Science Foundation of China [61170042]
- Jiangsu Province development and reform commission [2013-883]
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Existing works on redundancy allocation problems have typically focused on active or cold standby redundancies or a mix of them; little research is dedicated to warm standby systems butwith an assumption of allocating the same choice of components within each subsystem. Motivated by the fact that componentswith different costs and failure time distributions fromdifferent vendors can be available for the design of the same subsystem in practice, this paper advances the state-of-the-art by presenting a solution methodology to determine combined optimal design configuration and optimal operation of heterogeneous warm standby seriesparallel systems. Particularly, based on a proposed numerical reliability evaluation algorithm, two combined optimization problems (component allocation and sequencing problem, and component distribution and sequencing problem) are formulated and solved. Necessity and significance of the proposed methodology are illustrated through examples. Efficiency of themethodology is also successfully demonstrated on large warm standby series-parallel systems containing 14 subsystems of different choices of components.
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