Health state evaluation of an item: A general framework and graphical representation
Health state evaluation of an item: A general framework and graphical representation
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DOI：
10.1016/j.ress.2006.10.018
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
R. Jiang;R. Jiang;A. Jardine
中科院分区：
文献类型：
--
作者：
R. Jiang;R. Jiang;A. Jardine
本文提出了一种基于状态监测信息对某项健康状态进行评估的一般理论框架。项目的健康状态是根据其相对健康水平和总体健康水平来定义的。前者基于复合协变量的相对大小进行评估，而后者则使用决策时刻剩余寿命分布的分数寿命进行评估。此外，还提出了一种用图形表示复合协变量的退化模型、失效阈值模型和观测历史的方法。因此，可以直观地呈现监测项目的健康状态，并将评估结果用于基于状态的维修优化决策模型，该模型适合于计算机建模。文中还给出了一个数值算例，说明了该方法的有效性。
This paper presents a general theoretical framework to evaluate the health state of an item based on condition monitoring information. The item's health state is defined in terms of its relative health level and overall health level. The former is evaluated based on the relative magnitude of the composite covariate and the latter is evaluated using a fractile life of the residual life distribution at the decision instant. In addition, a method is developed to graphically represent the degradation model, failure threshold model, and the observation history of the composite covariate. As a result, the health state of the monitored item can be intuitively presented and the evaluated result can be subsequently used in a condition-based maintenance optimization decision model, which is amenable to computer modeling. A numerical example is included to illustrate the proposed approach and its appropriateness.