Selection of optimum maintenance strategies based on a fuzzy analytic hierarchy process
Selection of optimum maintenance strategies based on a fuzzy analytic hierarchy process
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DOI：
10.1016/j.ijpe.2006.08.005
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发表时间：
2007-05
影响因子：
12
通讯作者：
Ling Wang;Jian Chu;Jun-Hai Wu
中科院分区：
文献类型：
--
作者：
Ling Wang;Jian Chu;Jun-Hai Wu
本文旨在评估不同的维修策略（如纠正性维修，基于时间的预防性维修，基于状态的维修，和预测性维修）为不同的设备。为了在不增加大量投资的前提下提高生产设备的可用性和可靠性水平，需要一种最优的维修策略组合。维修策略的选择是一个典型的多准则决策问题。为了处理决策者的不确定性判断，模糊修改的层次分析法（AHP）的方法作为一种评价工具，其中不确定性和不精确的决策者的判断转化为模糊数。为了避免传统模糊层次分析法中的模糊优先级计算和模糊排序过程，提出了一种新的模糊排序方法。这种模糊排序方法可以从一个一致或不一致的模糊判断矩阵，通过求解非线性约束的优化问题，得到明确的优先级。应用模糊层次分析法对某电厂的维修策略进行了选择，结果表明，预测性维修策略最适合于锅炉。本案例研究表明，本文提出的模糊层次分析法是一个简单而有效的工具，用于解决与MCDM问题的不确定性和不精确性，这可能被证明有利于工厂维修管理人员，以确定最佳的维修策略，为每件设备。
This paper aims to evaluate different maintenance strategies (such as corrective maintenance, time-based preventive maintenance, condition-based maintenance, and predictive maintenance) for different equipment. An optimal maintenance strategy mix is necessary for increasing availability and reliability levels of production facilities without a great increasing of investment. The selection of maintenance strategies is a typical multiple criteria decision-making (MCDM) problem. To deal with the uncertain judgment of decision makers, a fuzzy modification of the analytic hierarchy process (AHP) method is applied as an evaluation tool, where uncertain and imprecise judgments of decision makers are translated into fuzzy numbers. In order to avoid the fuzzy priority calculation and fuzzy ranking procedures in the traditional fuzzy AHP methods, a new fuzzy prioritization method is proposed. This fuzzy prioritization method can derive crisp priorities from a consistent or inconsistent fuzzy judgment matrix by solving an optimization problem with non-linear constraints. A specific example of selection of maintenance strategies in a power plant with the application of the proposed fuzzy AHP method is given, showing that the predictive maintenance strategy is the most suitable for boilers. As demonstrated by this case study, the fuzzy AHP method proposed in this paper is a simple and effective tool for tackling the uncertainty and imprecision associated with MCDM problems, which might prove beneficial for plant maintenance managers to define the optimum maintenance strategy for each piece of equipment.