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Model-based safety assessment with SysML and component fault trees: application and lessons learned

机译:基于模型的安全评估与Sysml和组件故障树:申请和经验教训

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Mastering the complexity of safety assurance for modern, software-intensive systems is challenging in several domains, such as automotive, robotics, and avionics. Model-based safety analysis techniques show promising results to handle this challenge by automating the generation of required artifacts for an assurance case. In this work, we adapt prominent approaches and propose to augment of SysML models with component fault trees (CFTs) to support the fault tree analysis and the failure mode and effects analysis. While most existing approaches based on CFTs are only targeting the system topology, e. g., UML class diagrams, we propose an integration of CFTs with SysML internal block diagrams as well as SysML activity diagrams. We realized our approach in a prototypical tool. We conclude with best practices and lessons learned that emerged from our case studies with an electronic power steering system and a boost recuperation system.
机译:掌握现代软件密集型系统的安全保障的复杂性在若干领域具有挑战,例如汽车,机器人和航空电子产品。基于模型的安全性分析技术表明,通过自动化所需的工件来处理这一挑战,可以实现这一挑战。在这项工作中,我们适应突出的方法,并建议使用组件故障树(CFT)增强SYSML模型,以支持故障树分析和故障模式和效果分析。虽然基于CFT的大多数现有方法仅针对系统拓扑,E。 g。,UML类图,我们建议将CFT与SYSML内部框图和SYSML活动图集成在一起。我们在原型工具中实现了我们的方法。我们得出结论,最佳实践和经验教训,我们的案例研究与电子动力转向系统和升压恢复系统出现。

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