Allocation and sequencing in 1-out-of-N heterogeneous cold-standby systems: Multi-objective harmony search with dynamic parameters tuning. (January 2017)

• Record Type: Journal Article
• Authors: Valaei, M.R.; Behnamian, J.
• Is Part Of: Reliability engineering & system safety. Volume 157(2017)
• Page Start: 78
• Page End: 86
• Publication Date: 2017-01
• Subjects: Redundancy allocation problem -- Standby element sequencing problem -- Cold standby -- Harmony Search -- Taguchi experimental design; Reliability (Engineering) -- Periodicals; System safety -- Periodicals; Industrial safety -- Periodicals; Fiabilité -- Périodiques; Sécurité des systèmes -- Périodiques; Sécurité du travail -- Périodiques; 620.00452
• DOI: 10.1016/j.ress.2016.08.022
• Languages: English
• ISSNs: 0951-8320

Abstract

Abstract: A redundancy allocation is a famous problem in reliability sciences. A lot of researcher investigated about this problem, but a few of them focus on heterogeneous 1-out-of-N: G cold-standby redundancy in each subsystem. This paper considers a redundancy allocation problem (RAP) and standby element sequencing problem (SESP) for 1-out-of-N: G heterogeneous cold-standby system, simultaneously. Moreover, here, maximizing reliability of cold-standby allocation and minimizing cost of buying and time-independent elements are considered as two conflict objectives. This problem is NP-Hard and consequently, devizing a metaheuristic to solve this problem, especially for large-sized instances, is highly desirable. In this paper, we propose a multi-objective harmony search. Based on Taguchi experimental design, we, also, present a new parameters tuning method to improve the proposed algorithm. Graphical abstract: Example of solution encoding Highlights: This paper considers a redundancy allocation and standby element sequencing problem. To solve this problem, a multi-objective harmony search algorithm is proposed. Dynamic parameters tuning method is applied to improved the algorithm. With this method, sensitivity of the algorithm to initial parameters is reduced.