Verification of Component Fault Trees Using Error Effect Simulations

Resource type
Conference
Author(s)
Reiter, Sebastian and Zeller, Marc and Höfig, Kai and Viehl, Alexander and Bringmann, Oliver and Rosenstiel, Wolfgang
Year
2017
Pages
212--226
Publisher
Springer International Publishing
Address
Cham
ISBN
978-3-319-64119-5
Book title
Model-Based Safety and Assessment
Editor
Bozzano, Marco and Papadopoulos, Yiannis
Abstract
The growing complexity of safety-relevant systems causes an increasing effort for safety assurance. The reduction of development costs and time-to-market, while guaranteeing safe operation, is therefore a major challenge. In order to enable efficient safety assessment of complex architectures, we present an approach, which combines deductive safety analyses, in form of Component Fault Trees (CFTs), with an Error Effect Simulation (EES) for sanity checks. The combination reduces the drawbacks of both analyses, such as the subjective failure propagation assumptions in the CFTs or the determination of relevant fault scenarios for the EES. Both CFTs and the EES provide a modular, reusable and compositional safety analysis and are applicable throughout the whole design process. They support continuous model refinement and the reuse of conducted safety analysis and simulation models. Hence, safety goal violations can be identified in early design stages and the reuse of conducted safety analyses reduces the overhead for safety assessment.
Research focus
Safe and Intelligent Vehicles
Project
EffektiV, ASSUME - Affordable Safe & Secure Mobility Evolution
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Published by
Sebastian Reiter