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基于FMEA方法的航天电子产品制造风险评价应用研究

发布时间:2018-10-23 20:25
【摘要】:航天电子产品制造项目属于航天项目全寿命周期中的一部分,主要依据设计方案,利用工艺手段进行产品实现的过程,具有投入资金多,技术面广,生产周期长,可靠性要求高等特点。项目的风险因素众多,一个因素考虑不周便会导致项目的生产进度、成本、性能指标受到影响,甚至导致整个项目失败,造成巨大损失,因此在航天项目的生产制造领域加强风险评价工作,提高风险管理水平势在必行。 本文借助航天电子产品生产制造的实例,探讨基于失效模式与影响分析(Failure Mode and Effects Analysis, FMEA)的综合风险评价方法以及模糊层次分析法(Fuzzy Analytic Hierarchy Process, Fuzzy AHP)在应用。目前完成的主要工作如下: (1)航天电子产品制造风险分析 明确航天电子产品制造的基本概念,深入分析制造过程存在的风险名称、类型;以及探讨航天型号技术风险所用到的风险评价技术。 (2)基于FMEA的风险评价技术 深入探讨FMEA结合FTA、专家调查法的综合风险评价方法,提出FTA对风险进行识别,确定FMEA的失效模式以及失效原因(机理),借助专家调查法对识别出的风险进行评估,即对FMEA过程中的严重度、发生度、检测度进行定性分析,从而获取风险度; 针对多层级风险因素,基于FMEA分析中的严重度、发生度、检测度三项评估因素,利用Fuzzy AHP对专家调查结果进行风险评价,从而获取风险排序。 (3)案例分析 在上述探讨的风险评价技术基础上,针对两种不同的风险管控类型,进行实例验证。 运用上述风险评价技术,可提高航天电子产品制造领域风险评价技术手段的科学性,为决策人员提供更准确的风险因素信息,为制定并执行风险计划提供更为合理的依据。
[Abstract]:The aerospace electronic product manufacturing project is a part of the whole life cycle of the space project. It is mainly based on the design scheme and the process of product realization by means of technology. It has many investment, wide technical scope and long production cycle. High reliability requirements and other characteristics. There are many risk factors in the project. If one factor is not considered properly, the production schedule, cost and performance index of the project will be affected, and even the whole project will fail, resulting in huge losses. Therefore, it is imperative to strengthen the risk evaluation and improve the risk management level in the field of production and manufacturing of aerospace projects. This paper discusses the comprehensive risk assessment method based on failure mode and impact analysis (Failure Mode and Effects Analysis, FMEA) and the application of fuzzy analytic hierarchy process (Fuzzy Analytic Hierarchy Process, Fuzzy AHP) in aerospace electronics manufacturing. The main work accomplished at present is as follows: (1) risk analysis of aerospace electronic product manufacturing clarifies the basic concept of aerospace electronic product manufacturing, deeply analyzes the name and type of risk existing in manufacturing process; This paper also discusses the risk assessment technology used in aerospace technology. (2) the risk assessment technology based on FMEA is deeply discussed in FMEA combined with the FTA, expert investigation method, and the identification of the risk by FTA is put forward. The failure mode and failure reason (mechanism) of FMEA are determined, and the identified risk is evaluated by expert investigation method, that is, the severity, occurrence degree and detection degree of FMEA process are qualitatively analyzed, and the risk degree is obtained. Aiming at multi-level risk factors, based on the three evaluation factors of severity, occurrence and detection in FMEA analysis, Fuzzy AHP is used to evaluate the risk of the results of expert investigation. In order to obtain risk ranking. (3) case study on the basis of the risk assessment technology discussed above, for two different types of risk management and control, a case study. The application of the above risk assessment technology can improve the scientific nature of the technical means of risk assessment in the field of aerospace electronics manufacturing, provide more accurate information of risk factors for decision makers, and provide more reasonable basis for making and implementing risk plans.
【学位授予单位】:中国科学院大学(工程管理与信息技术学院)
【学位级别】:硕士
【学位授予年份】:2013
【分类号】:F407.6

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