Multi-objective optimization of reliability-redundancy allocation problem for multi-type production systems considering redundancy strategies

•A new model of multi-type production systems that generalizes the manufacturing systems with multiple switchable production lines is developed.•A binary matrix is used to describe the composition of each production line of the multi-type production system.•RRAP considering redundancy strategies (ei...

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Bibliographic Details
Published in:Reliability engineering & system safety Vol. 193; p. 106681
Main Authors: Wang, Wei, Lin, Mingqiang, Fu, Yongnian, Luo, Xiaoping, Chen, Hanghang
Format: Journal Article
Language:English
Published: Barking Elsevier Ltd 01.01.2020
Elsevier BV
Subjects:
Evolutionary algorithms
Markov chains
Multi-objective optimization
Multi-type production system
Multiple objective analysis
NSGA-II
Optimization
Production lines
Production planning
Redundancy
Redundancy strategy
Reliability engineering
Reliability-redundancy allocation
Structure matrix
Subsystems
Structure matrix
NSGA-II
Multi-objective optimization
Multi-type production system
Redundancy strategy
Reliability-redundancy allocation
ISSN:0951-8320, 1879-0836
Online Access:Get full text
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Summary:•A new model of multi-type production systems that generalizes the manufacturing systems with multiple switchable production lines is developed.•A binary matrix is used to describe the composition of each production line of the multi-type production system.•RRAP considering redundancy strategies (either active or cold standby) is modeled for enhancing the reliabilities of different production lines.•A NSGA-II is developed to solve the RRAP for the multi-type production system. This paper innovatively proposes a new model of multi-type production system which can process different types of production. The multi-type production system consists of several independent sequentially ordered subsystems which undertaking different tasks. Different types of production require different manufacturing lines: required subsystems will be powered on, while others powered off. The system can switch into different production line based on detection results. A binary matrix is suggested to describe the composition of each production line of the multi-type production system. Reliability-redundancy allocation on each subsystem is considered for achieving higher reliabilities of different production lines. The reliability-redundancy allocation problem for the proposed multi-type production system is essentially multi-objective subject to resource constraints. This paper formulates the multi-objective optimization problem and considers the optimal redundancy strategy, either active or cold standby. The exact reliabilities of cold standby redundant subsystems with imperfect detector/switch are determined by introducing an approach based on continuous time Markov chain. Then, a multi-objective evolutionary algorithm is suggested to solve the proposed reliability-redundancy allocation problem. Finally, numerical examples are presented to illustrate the proposed methods.
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ISSN:0951-8320
1879-0836
DOI:10.1016/j.ress.2019.106681