基于设备有效度和可靠度的预防修经济优化模型  

Preventive Maintenance Economic Optimization Model Based on Equipment Availability and Reliability

作　　者：王灵芝[1] 徐宇工[1] 张家栋[1] 

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044

出　　处：《机械工程学报》2010年第4期163-168,共6页Journal of Mechanical Engineering

基　　金：北京交通大学'十五'专项科技基金资助项目(2005KZ005)

摘　　要：基于以可靠性为中心的预防性维修计划对生产的重要性及其制定的复杂性,分析生产设备各单部件最优预防修策略。为了减少维修停机损失,将多个维修作业按照机会维修阈值进行归并。在此基础上分析系统维修费用构成和系统有效度,并以系统总体维修费用最小化、系统有效度最大化为目标,建立多部件成组预防修策略优化模型,提出多部件设备非周期预防修计划的优化方法。模型中除了考虑预防性修理和更换等预防修的主要环节之外,还考虑对于非预期故障所采用的小修环节。用Matlab编程仿真求解出满足设备可靠性要求、且维修成本和有效度得到优化的预防性维修计划。结果表明,相比对多个部件单独进行更换或修理,所提出的方法可以节约维修成本并且提高设备的有效度。Reliability centered preventive maintenance（PM） schedule plays an important role in production process,however it is always a complex task to make such a plan.Firstly single-component equipment optimal PM strategy is analyzed.Several PM activities are performed together to reduce shutdown loss if they have reached the threshold for opportunity PM.On this basis,maintenance cost composition of multi-components systems and system availability are analyzed.The optimal group preventive maintenance model is proposed for complex systems.And the model minimizes maintenance cost and maximizes availability.A method of optimization of non-periodic PT for multi-components equipment with minimal repair at failures is discussed.Three types of PM actions including mechanical service,repair and replacement are simultaneously considered.Reliability-centered maintenance cost optimization model for multi-components system is built up.The optimal PM schedule which can provide desired levels of reliability to multi-components of the equipment and optimize maintenance cost and system availability at the same time is obtained by the simulation in Matlab program,which saves much cost and increases availability of the equipment compared with replacing or repairing components individually.

关 键 词：预防性维修 可靠性 优化 有效度 

分 类 号：TH165.3[机械工程—机械制造及自动化]