基于三F装备可靠性设计与管理系统研究

本文对基于三F装备可靠性设计与管理系统进行研究 ,论述系统模型、结构和功能设计方法 ,叙述系统实现关键技术 ,阐明该系统的研究对促进三F技术的推广 ,提高工程装备可靠性具有重要作用。     

某型自行火炮通信系统在线检测仪的设计

介绍了便携式某型自行火炮通信系统在线检测仪的设计;并对数据采集系统和监测、管理等分系统的功能进行了分析.探讨了通信系统RBD框图的建立与存储、系统FMECA设计、运用神经网络的模块化设计、基于故障树的专家系统模块设计.     

基于FMECA的城市地铁火灾危险源辨识及风险防范

在基于FMECA方法和地铁火灾危险源识别的基础上,介绍了FMECA的工作原理和具体方法,选取成都地铁一号线车站FAS系统为研究对象,对地铁FAS系统的可靠性进行了风险分析,并提出相应改进措施：技术方面设计遵守国家规范和消防标准、制订备用方案、安装完成后进行功能性测试;制定规范的设备采购流程;运营管理时应建立FAS系统相应规程、建立健全消防安全管理制度等。     

面向优化检修的真空断路器状态监测与诊断

结合大型电厂开展设备优化检修的需求,对真空断路器状态监测与诊断系统进行了研究。通过对真空断路器进行故障模式、影响及危害分析(FMECA),确定了系统所需开展的监测项目以及采取的监测方式;提出了一种多层次、集成分布式体系结构;详细阐述了系统的硬件结构和软件功能。实际应用表明,系统能够为状态监测、诊断分析提供先进的工具,有利于提高检修质量、减少维护成本,对逐步实现状态检修提供了积极的作用。     

基于直觉模糊决策的无人机动力系统FMECA分析方法研究

针对传统无人机FMECA方法存在模糊性、难以进行定量分析并得出精确分析结果的问题,提出了基于直觉模糊决策的综合评判FMECA分析方法。该方法首先在计算直觉模糊值相似度的基础上,考虑专家的信任度,给出了专家基本概率分配函数的计算方法。然后基于证据组合理论进行对单个属性以及综合属性的决策群体基本概率分配函数合成。通过计算故障模式的效用值,来进行故障模式严酷度排序。以无人机系统中的动力系统为例进行了基于直觉模糊决策的FMECA分析,对其各个主要的故障模式进行了模糊综合评判,验证了该方法的正确性和有效性。     

A knowledge based reliability engineering approach to manage product safety and recalls

PurposeManaging processed food products’ safety and recall is a challenge for industry and governments. Contaminated food items can create a significant public health hazard with potential for acute and chronic food borne illnesses. This industry study examines the challenges companies face while managing a processed food recall situation and devise a responsive and reliable knowledge management framework for product safety and recall supply chain for the focal global manufacturing and distribution enterprise.MethodDrawing upon the knowledge management and product safety and recall literature and reliability engineering theory, this study uses a holistic single case based approach to develop a knowledge management framework with Failure Mode Effects and Criticality Analysis (FMECA) decision model. This knowledge management decision framework facilitates analysis of the root causes for each potential major recall issue and assesses the reliability of the product safety and recall supply chain system and its critical components.ResultsThe main reasons highlighted for a recall and associated failure modes in a knowledge management framework are to devise appropriate deployment of resources, technology and procedures to recall supply chain. This study underscores specific information described by managers of a global processed food manufacturer and their perspectives about the product safety and recall process, and its complexities. Full scale implementation of product safety and recall supply chain in the proposed knowledge management framework after the current pilot study will be carried out eventually through expert systems. This operational system when fully implemented will capture the essence of decision making environments comprising goals and objectives, courses of action, resources, constraints, technology and procedures.ImplicationsThe study recognizes the significance of communication, integration, failsafe knowledge management process design framework, leveraging technology such as Radio Frequency Identification (RFID) within all levels of supply chain for product traceability and the proactive steps to help companies successfully manage a recall process and also reestablish trust among the consumers. The proposed knowledge management framework can also preempt product recall by acting as an early warning system. A formal knowledge management framework will enable a company’s knowledge be cumulative for product safety and recall and serve as an important integrating and coordinating role for the organization.     

基于FMECA知识的故障诊断贝叶斯网络建模研究

为了构建具有较完备知识的贝叶斯网络诊断模型,提出了一种基于FMECA知识的故障诊断贝叶斯网络建模方法,该方法根据产品FMECA分析所得故障模式、故障原因、故障影响之间的因果关系构建贝叶斯网络拓扑结构,通过历史数据确定网络各节点的先验概率和条件概率分布,进而利用建立的贝叶斯网络进行故障诊断推理决策,最后通过某型飞机平视显示器的故障诊断贝叶斯网络建模及诊断实例,验证了方法的正确性及可行性。     

Multi-criteria risk analysis to improve safety in manufacturing systems

The drive to lower operating costs and improve manufacturing efficiency has led many manufacturing companies to implement different methodologies in order to identify a suitable risk assessment model. So, the concern for safety in industrial activities, both inside the establishments and in their surroundings, has a crucial role. As a result, many laws, regulations and risk analysis techniques are well adapted to industry needs since they were developed for its purpose. However increasing safety is often difficult, especially when you have already obtained good results, so the aim of our paper is the proposal of a new methodological approach called the safety improve risk assessment (SIRA) by integrating the conventional aspects of the popular failure mode, effects, and criticality analysis (FMECA) procedure with economic considerations in order to take into account the risk and to minimise the total safety costs by defining a specific index called total risk priority number (TRPN) index. The index proposed is based on the improved risk priority number (IRPN) and the analytic network process (ANP), a multi-criteria decision-making technique.     

传统糕点食品质量安全控制技术研究

以我国传统糕点食品(月饼)质量安全控制技术为研究对象,以HACCP理论、FMECA方法和模糊分析为核心,结合ISO22000:2005<食品安全管理体系-对食物链中任何组织的要求>和PDCA循环理论,研究一套高效实用的我国传统糕点食品质量安全控制方法,建立一套质量安全控制体系,实现传统糕点食品质量安全控制技术的提高,保障其质量安全.     

压水堆堆内构件老化评估方法及其应用

本文介绍了压水堆堆内构件老化分析评定方法。该方法通过建立老化机理筛选准则、初步分类、堆内构件的故障模式、影响及危害分析(FMECA)以及识别主要潜在老化部件等步骤,最终完成堆内构件老化程度的评估。老化评估结果为堆内构件的老化管理奠定基础。该老化评估方法已首次成功应用于秦山CNP320机组和CNP650机组堆内构件的老化评估。