ATRIUM --符合ISO 26262的不确定性下的架构
ATRIUM -- Architecting Under Uncertainty for ISO 26262 compliance
摘要：
ISO 26262是目前确保汽车行业电气和电子系统功能安全的主要标准。该标准中的功能安全概念（FSC）子阶段需要初步架构假设（PAA）来分配功能安全要求（FSR）。本文证明了需要，并定义了一个过程ATRIUM，一致的PAA设计。ATRIUM随后被应用于一个工业案例研究中，用于欧洲最大的重型汽车制造商之一斯堪尼亚CV AB的高度自动化驾驶功能。本研究的结果，这有助于ATRIUM的制度化在斯堪尼亚，提出。建议的过程的好处包括（i）一个快速和灵活的方法来完善PAA，和一个框架，（ii）将信息从遗留系统纳入安全设计和（iii）严格跟踪和记录的假设和不确定信息下的架构决策背后的理由。本文的贡献是（i）问题的分析（ii）ATRIUM过程和（iii）斯堪尼亚案例研究的结果和讨论。保留字：ISO 26262，功能安全，自动化，HCV，HGV，架构，高度自动化驾驶，ATRIUM，决策制定，架构，不确定性管理
英文摘要：
The ISO 26262 is currently the dominant standard for assuring functional safety of electrical and electronic systems in the automotive industry. The Functional Safety Concept (FSC) subphase in the standard requires the Preliminary Architectural Assumptions (PAA) for allocation of functional safety requirements (FSRs). This paper justifies the need for, and defines a process ATRIUM, for consistent design of the PAA. ATRIUM is subsequently applied in an industrial case study for a function enabling highly automated driving at one of the largest heavy vehicle manufacturers in Europe, Scania CV AB. The findings from this study, which contributed to ATRIUM's institutionalization at Scania, are presented. The benefits of the proposed process include (i) a fast and flexible way to refine the PAA, and a framework to (ii) incorporate information from legacy systems into safety design and (iii) rigorously track and document the assumptions and rationale behind architectural decisions under uncertain information. The contributions of this paper are the (i) analysis of the problem (ii) the process ATRIUM and (iii) findings and the discussion from the case study at Scania. Keywords: ISO 26262, functional safety, automation, HCV, HGV, architectures, highly automated driving, ATRIUM, decision making, architecting, uncertainty management
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