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Evaluation of a systematic approach in variant management for safety-critical systems development

: Käßmeyer, Michael; Velasco, David S.; Schurius, Markus

Volltext urn:nbn:de:0011-n-3994960 (1.1 MByte PDF)
MD5 Fingerprint: 948ebbf4c90f729cd903fd792d980845
Erstellt am: 24.6.2016

Kaiserslautern, 2015, 9 S.
IESE-Report, 075.15/E
Reportnr.: 075.15/E
Bericht, Elektronische Publikation
Fraunhofer IESE ()
product line engineering; Unified Modeling Language (UML); automotive engineering; fault tree; formal specification; formal verification; software architecture; architecture design; Fault Tree Analysis (FTA); hazard analysis; requirements engineering; safety analysis; product lines - management; automotive engineering

The development of highly integrated, safety-relevant automotive functions is faced with the challenge of increasing complexity resulting from product customization and variants in implementation through software-hardware solutions. In order to reduce development time in this scenario, systematic reuse of engineering artifacts is important. This paper introduces a systematic model-based engineering approach that combines architecture design, requirements engineering, and safety analyses with variant management and provides evaluation results to address these challenges. In detail, this tool-supported approach achieves a new level of seamless safety engineering across variants by enabling typical safety lifecycle artifacts to be represented in a homogeneous, UML-compliant model notation. Safety-related information is no longer scattered in various isolated tools and formats, but instead consolidated and integrated. A further and decisive benefit of this notation is that variability can now be expressed and managed easily by regular variant management tools with UML adapters. Together with changeimpact analysis, which is facilitated equally the ultimate goal of developing and maintaining modular safety cases can be achieved. Examples on how to use this model-based safety engineering method for variant-rich automotive functions are presented for a hazard analysis, a fault tree analysis and for a safety concept specification.