A System's Perspective Towards an Architecture Framework for Safe
Automated Vehicles
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by
Gerrit Bagschik, Marcus Nolte, Susanne Ernst, Markus Maurer
2018
Abstract
With an increasing degree of automation, automated vehicle systems become
more complex in terms of functional components as well as interconnected
hardware and software components. Thus, holistic systems engineering becomes a
severe challenge. Emergent properties like system safety are not solely
arguable in singular viewpoints such as structural representations of software
or electrical wiring (e.g. fault tolerant). This states the need to get several
viewpoints on a system and describe correspondences between these views in
order to enable traceability of emergent system properties. Today, the most
abstract view found in architecture frameworks is a logical description of
system functions which structures the system in terms of information flow and
functional components. In this article we extend established system viewpoints
towards a capability-based assessment of an automated vehicle and conduct an
exemplary safety analysis to derive behavioral safety requirements. These
requirements can afterwards be attributed to different viewpoints in an
architecture frameworks and thus be integrated into a development process for
automated vehicles.
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