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Health Status Evaluation Approach of Critical Equipment in an Urban Rail Transit System

机译：城市轨道交通系统关键设备健康状况评估方法

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The urban rail transit system in Chinese metropolis is developing into the network operation and structure optimization stage. With the high frequency of Critical equipment failure, equipment intelligent maintenance management needs highlighted. The paper puts forward a method of the evaluation of critical equipment health status in urban rail transit signal system with the needs of overhaul line in Shanghai urban rail transit. The method introduces the equipment service safety concept and defines the health status. Then the paper builds the multi-layer hierarchical structure model of equipment health status combining with considering the multi-dimensional influence factors of signal system equipment such as physical characteristics, economic characteristics and technical characteristics. Finally, the technical process of the fuzzy comprehensive evaluation of equipment health status is put forward. While take the switch which is the critical equipment of urban rail traffic signal system as an example to validate the proposed approach. The results show that the assessment consequence of the proposed method is consistent with the realistic expectations. The method can provide the reference for the diagnosis of hazard factors in service safety while quantitatively analyzing the equipment serving safety level.
机译：中国大城市的城市轨道交通系统正在发展到网络运营和结构优化阶段。随着关键设备故障的频繁发生，对设备智能维护管理的需求凸显出来。提出了一种基于上海城市轨道交通大修线需求的城市轨道交通信号系统关键设备健康状态评估方法。该方法引入了设备服务安全概念并定义了健康状况。然后结合信号系统设备的物理特性，经济特性和技术特性等多维影响因素，建立了设备健康状态的多层层次结构模型。最后提出了设备健康状态模糊综合评价的技术过程。以开关作为城市轨道交通信号系统的关键设备为例，对所提出的方法进行了验证。结果表明，该方法的评估结果与实际预期吻合。该方法可以在定量分析设备服务安全水平的同时，为诊断服务安全中的危险因素提供参考。

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