基于随机退化的串行生产系统机会维护模型

摘要/Abstract

摘要：

为了降低生产系统故障频率及维护成本，保证系统的安全运行，通过建立成本分析模型，对随机退化的串行生产系统提出了一种机会维护的建模方法.首先应用定态gamma分布对各设备的随机退化过程进行建模，在此基础上引入不完全维护的整合退化量恢复因子，提出了基于条件的机会维护策略.考虑设备退化的随机性，以总成本为优化目标，建立了有限时间内维护成本的分析模型.最后通过实验分析，确定了系统维护成本和检测周期以及机会维护成本之间的关系.分析结果表明，该机会维护建模方法是可行、有效的.

关键词: 随机退化, 串行系统, 不完全维护, 机会维护

Abstract:

To reduce the failure rate and maintenance cost of production systems, an opportunistic maintenance model was proposed for a series production system which experiences stochastic degradation. A stationary gamma process was used to model the uncertain degradation for each unit of the system. By introducing integrated recovery factor of imperfective maintenance, a condition-based opportunistic maintenance policy was proposed. A formulation was developed for computing the expected value of the maintenance cost over a defined time horizon. The optimal inspection interval of the system could be found by minimizing the expected maintenance cost. Finally, a simulation experiment was conducted to show that the proposed model was feasible and valid.

Key words: stochastic degradation, series system, imperfective maintenance, opportunistic maintenance

中图分类号:

TP 16

TAO Hongyu，ZHOU Binghai. 基于随机退化的串行生产系统机会维护模型[J]. 上海交通大学学报（自然版）, 2013, 47(12): 1911-1916.

陶红玉，周炳海. Opportunistic Maintenance Model for Series Production Systems Based on Stochastic Degradations[J]. Journal of Shanghai Jiaotong University, 2013, 47(12): 1911-1916.

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