Scheduling spares with exponential lifetimes in a two-component parallel system

1980 ◽  
Vol 17 (4) ◽  
pp. 1025-1032 ◽  
Author(s):  
Michael Pinedo
Keyword(s):  
Parallel System ◽  
Two Component ◽  
System Breakdown ◽  
Component Parallel

Consider a two-component parallel system. There is a stockpile of n spares, spare i having lifetime Xi, exponentially distributed with rate µi. The system breaks down when neither component functions. Every time a spare expires it has to be replaced, to avoid system breakdown. We investigate the policies which maximize the expected lifetime of the system using these n spares.

Scheduling spares with exponential lifetimes in a two-component parallel system

1980 ◽  
Vol 17 (04) ◽  
pp. 1025-1032
Author(s):  
Michael Pinedo
Keyword(s):  
Parallel System ◽  
Two Component ◽  
System Breakdown ◽  
Component Parallel

Consider a two-component parallel system. There is a stockpile of n spares, spare i having lifetime Xi , exponentially distributed with rate µi . The system breaks down when neither component functions. Every time a spare expires it has to be replaced, to avoid system breakdown. We investigate the policies which maximize the expected lifetime of the system using these n spares.

scholarly journals A condition-based opportunistic maintenance policy integrated with energy efficiency for two-component parallel systems

2018 ◽  
Vol 11 (4) ◽  
pp. 749
Author(s):  
Aiping Jiang ◽  
Yuanyuan Wang ◽  
Yide Cheng
Keyword(s):  
Decision Making ◽  
Energy Efficiency ◽  
Sustainable Development ◽  
Parallel Systems ◽  
Condition Based Maintenance ◽  
Maintenance Policy ◽  
Opportunistic Maintenance ◽  
Two Component ◽  
Optimal Maintenance ◽  
Component Parallel

Purpose: In order to improve the energy utilization and achieve sustainable development, this paper integrates energy efficiency into condition-based maintenance(CBM) decision-making for two-component parallel systems. The objective is to obtain the optimal maintenance policy by minimizing total cost.Design/methodology/approach: Based on energy efficiency, the paper considers the economic dependence between the two components to take opportunistic maintenance. Specifically, the objective function consists of traditional maintenance cost and energy cost incurred by energy consumption of components. In order to assess the performance of the proposed new maintenance policy, the paper uses Monte-Carlo method to evaluate the total cost and find the optimal maintenance policy.Findings: Simulation results indicate that the new maintenance policy is superior to the classical condition-based opportunistic maintenance policy in terms of total economic costs.Originality/value: For two-component parallel systems, previous researches usually simply establish a condition-based opportunistic maintenance model based on real deterioration data, but ignore energy consumption, energy efficiency (EE) and their contributions of sustainable development. This paper creatively takes energy efficiency into condition-based maintenance(CBM) decision-making process, and proposes a new condition-based opportunistic maintenance policy by using energy efficiency indicator(EEI).

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