TY - JOUR
T1 - Reliability–redundancy allocation problem considering optimal redundancy strategy using parallel genetic algorithm
AU - Kim, Heungseob
AU - Kim, Pansoo
N1 - Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2017/3/1
Y1 - 2017/3/1
N2 - To maximize the reliability of a system, the traditional reliability–redundancy allocation problem (RRAP) determines the component reliability and level of redundancy for each subsystem. This paper proposes an advanced RRAP that also considers the optimal redundancy strategy, either active or cold standby. In addition, new examples are presented for it. Furthermore, the exact reliability function for a cold standby redundant subsystem with an imperfect detector/switch is suggested, and is expected to replace the previous approximating model that has been used in most related studies. A parallel genetic algorithm for solving the RRAP as a mixed-integer nonlinear programming model is presented, and its performance is compared with those of previous studies by using numerical examples on three benchmark problems.
AB - To maximize the reliability of a system, the traditional reliability–redundancy allocation problem (RRAP) determines the component reliability and level of redundancy for each subsystem. This paper proposes an advanced RRAP that also considers the optimal redundancy strategy, either active or cold standby. In addition, new examples are presented for it. Furthermore, the exact reliability function for a cold standby redundant subsystem with an imperfect detector/switch is suggested, and is expected to replace the previous approximating model that has been used in most related studies. A parallel genetic algorithm for solving the RRAP as a mixed-integer nonlinear programming model is presented, and its performance is compared with those of previous studies by using numerical examples on three benchmark problems.
KW - Imperfect switching
KW - Parallel genetic algorithm
KW - Redundancy strategy
KW - Reliability optimization
KW - Reliability–redundancy allocation problem
UR - http://www.scopus.com/inward/record.url?scp=84998953899&partnerID=8YFLogxK
U2 - 10.1016/j.ress.2016.10.033
DO - 10.1016/j.ress.2016.10.033
M3 - Article
AN - SCOPUS:84998953899
SN - 0951-8320
VL - 159
SP - 153
EP - 160
JO - Reliability Engineering and System Safety
JF - Reliability Engineering and System Safety
ER -