【作者】 陈琦；

【导师】 赵涛；

【作者基本信息】 天津大学 ， 管理科学与工程， 2008， 博士

【摘要】 基于可靠性的设备维护,不仅关注设备故障本身,还将设备故障后果纳入设备维护决策考虑的重要因素之中,是综合了故障后果和故障模式的有关信息,以运行经济性为出发点的设备维护模式。论文通过消化吸收设备可靠性维护的最新理论和研究成果,在对国内企业设备维护现状的调查研究基础上,对设备可靠性维护进行深入研究,在一定程度上拓宽了我国设备维护的研究领域,对于促进我国设备维护的发展具有一定的理论价值和现实意义。设备可靠性的客观存在要求企业科学地认识和管理这种可靠性。本文以工业企业中单设备系统为研究对象,对基于可靠性的设备维护优化问题进行了研究,主要内容包括:1、总结了传统寿命周期费用的分析方法,通过对可靠性和寿命周期费用相关关系的分析,建立了可靠性和寿命周期费用优化模型,权衡设备可靠性和寿命周期费用的关系,用以实现可靠性和设备寿命周期费用的最佳匹配。2、借鉴多设备维护中的机会维护方法,建立了基于可靠性的单设备系统预防性维护优化模型,综合考虑企业的生产与维护两方面的情况,减小大修维护造成的停机损失。考虑了不同维护活动对系统可靠性的动态变化影响情况,使模型与实际更贴近。3、对基于可靠性的设备更新模型进行了设计。综合考虑在满足一定可靠性要求下,设备更新时机和维护周期优化,确定设备的维护周期和维护次数。建立基于系统最低可接受可靠度的可变维护周期最优维护模型,在确保设备连续安全生产的同时,最小化设备的单位时间维护费用。4、考虑设备系统中组件备件可靠性与成本之间关系的多样性,建立求解基于可靠性的备件优化混合整数非线性规划数学模型。给出可靠性与成本存在不同关系时,备件的优化设计方案。更多还原

【Abstract】 The reliability-based maintenance not only concerns about equipment failure but also includes equipment failure consequences as an important factor in equipment maintenance decision-making. The theory takes the system economics as the starting point and integrates the relevant information of failure consequences and failure patterns. This paper conducted an in-depth study on the equipment maintenance reliability through digesting and absorbing the latest reliability theory and research results of equipment maintenance, along with the investigations and research on the status quo of equipment maintenance for the domestic enterprises. It expanded the areas of equipment maintenance research in some degree and is of some theoretical value and practical significance for the promotion of the domestic equipment maintenance developments.The virtual existence of the equipment reliability requires enterprises scientifically understand and manage such reliabilities. This paper studied the reliability-based equipment maintenance optimization problems for the single equipment system within the industrial enterprises. The main contents include:1.Through investigations of the traditional life cycle cost analysis methods, and further analysis on the relationship between reliability and life-cycle costs, the paper established the reliability and life cycle cost optimization model. By weighing the equipment reliability and the life cycle costs, the model achieves the best match between the reliability and the product life-cycle costs.2.Established the reliability-based single equipment system preventive maintenance optimization model in view of the opportunistic maintenance methods employed for the multi-equipment system. The model takes both production and maintenance into consideration to reduce the loss caused by the downtime incurred during maintenance overhauls. It also considers the dynamic impacts on the system reliability for different maintenance activities so that the model is closer to the practical applications.3.Conducted design for the reliability-based equipment renovation model. Under certain reliability requirements, the design considers the equipment renovation timing and maintenance cycle optimization to identify equipment maintenance cycles and the number of maintenances. The paper also established the variable maintenance cycle optimization model based on the system’s minimum acceptable reliability level to ensure that the equipment maintenance costs per unit time is minimized while the equipment continues in safe production.4.Formulated the mixed-integer nonlinear programming model to optimize the reliability-based spare part components by considering the diversity in functional relationships between the reliability for the spare parts and the associated costs. It provides the spare parts optimization design based on different types of the reliability-cost functions.更多还原