Abstract

Accurate and effective equipment state assessment can help us to keep abreast of equipment operation reliability in performing emergency management of equipment faults. However, the state change of a running system is a dynamic process, and the occurrences of faults are a random process. Therefore, the dynamic characteristics of a system should be identified and real-time data should be used to establish a state evaluation model. This paper proposes a dynamic reliability assessment method of equipment based on process capability index (PCI) and fault importance index (FII) to identify the dynamic performance of equipment, evaluate the stability of process data, and analyze the structural importance of the functional components in the equipment. We present a fault importance calculation method and a comprehensive PCI (CPCI) method based on structural importance. These methods are applied to a synchrotron cooling water system in Shanghai Proton and Heavy Ion Center. Result shows that the dynamic reliability assessment model based on PCI and FII can effectively identify the equipment dynamic reliability change.

摘要

准确有效的设备状态评估可以帮助我们在执行设备故障的应急管理时了解设备运行的可靠性。但是，运行系统的状态变化是一个动态过程，故障的发生是一个随机过程。因此，应该识别系统的动态特性，并应使用实时数据来建立状态评估模型。本文提出了一种基于过程能力指数（PCI）和故障重要性指数（FII）的设备动态可靠性评估方法，用以识别设备的动态性能，评估过程数据的稳定性，并分析其功能部件的结构重要性。设备器材。我们提出了故障重要性计算方法和基于结构重要性的综合PCI（CPCI）方法。这些方法已应用于上海质子重离子中心的同步加速器冷却水系统。结果表明，基于PCI和FII的动态可靠性评估模型可以有效地识别设备的动态可靠性变化。