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    • 1. 发明授权
    • Probabilistic implementation of system health prognosis
    • 概率实施系统健康预后
    • US08438129B1
    • 2013-05-07
    • US12783299
    • 2010-05-19
    • Krzysztof Wojtek PrzytulaArthur Choi
    • Krzysztof Wojtek PrzytulaArthur Choi
    • G06F9/44G06N7/02G06N7/06
    • G06N7/005
    • Described is a system for health prognosis of a component based on the use of a graphical probabilistic model. The model comprises a layer of at least one component node representing the health of a component, a layer of at least one health observation node representing a health observation, and a layer of at least one usage node representing a usage observation. Additionally, the system is configured to collect component failure data, which is used in generating normalized failure histograms. The histograms provide failure densities for component and health observation failures. The system also computes at least one parameter for the model using component and health observation failure densities. A component prognosis is computed based on present observation of system usage and health with a history of past observation using a standard reasoning engine.
    • 描述了基于使用图形概率模型的组件的健康预测的系统。 该模型包括表示组件健康的至少一个组件节点的层,表示健康观察的至少一个健康观察节点的层,以及表示使用观察的至少一个使用节点的层。 另外,该系统被配置为收集用于生成归一化故障直方图的组件故障数据。 直方图为组件和健康状况观察失败提供了故障密度。 该系统还使用组件和健康观察故障密度来计算模型的至少一个参数。 基于目前对系统使用和健康状况的观察,使用标准推理引擎计算过去观察历史的成分预后。