论文标题
DPN-可靠性优先级数字
DPN -- Dependability Priority Numbers
论文作者
论文摘要
本文提出了一种基于模型的新方法，以结合定量可靠性（安全性，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），并允许比较具有目标值的系统的不同实际可靠性特征，并在权衡分析标准方面对其进行了评估。因此，将系统可靠性特征的目标值作为要求，而特定系统设计的实际值则由定量和定性可靠性分析（FHA，FMEA，FMEA，FMEDA，基于CFT的FTA）提供。 DPN方法评估了各个目标要求的满足，并在分析目标之间执行权衡。我们介绍了DPN方法的工作流程和元模型，并使用有关制动警告接触系统的案例研究说明了我们的方法。因此，我们通过选择重要的可靠设计替代方案或措施来证明基于模型的DPN如何改善系统可靠性。
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.
