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DPN - Dependability Priority Numbers

机译:DPN - 可靠性优先级编号

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This paper proposes a novel model-based approach to combine the quantitative dependability (safety, reliability, availability, maintainability and IT security) analysis and trade-off analysis. The proposed approach is called DPN (Dependability Priority Numbers) and allows the comparison of different actual dependability characteristics of a systems with its target values and evaluates them regarding trade-off analysis criteria. Therefore, the target values of system dependability characteristics are taken as requirements, while the actual value of a specific system design are provided by quantitative and qualitative dependability analysis (FHA, FMEA, FMEDA, of CFT-based FTA). The DPN approach evaluates the fulfillment of individual target requirements and perform trade-offs between analysis objectives. We present the workflow and meta-model of the DPN approach, and illustrate our approach using a case study on a brake warning contact system. Hence, we demonstrate how the model-based DPNs improve system dependability by selecting the project crucial dependable design alternatives or measures.
机译:本文提出了一种基于模型的基于模型的方法来结合定量可靠性(安全,可靠性,可用性,可维护性和IT安全性)分析和权衡分析。所提出的方法称为DPN(可靠性优先级编号),并允许将系统的不同实际可靠性特性与其目标值进行比较,并评估其关于权衡分析标准的折衷。因此,将系统可靠性特性的目标值作为要求,而特定系统设计的实际值是通过定量和定性的可靠性分析(FHA,FMEA,FMMEDA,CFT基FTA)提供的实际值。 DPN方法评估个人目标要求的履行,并在分析目标之间进行权衡。我们介绍了DPN方法的工作流程和元模型,并使用案例研究来说明我们对制动警告接触系统的方法。因此,我们通过选择项目至关重要的设计替代品或措施,展示基于模型的DPN改善系统可靠性。

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