From SAE level 3 onwards, automated vehicles must be able to resolve sudden system failures without driver intervention, including failure modes that are difficult or impossible to address by redundancy alone. Causes of hazardous multiple-point faults—beyond internal failures—include lightning strikes or deliberate attacks by electromagnetic pulses. Stopping the vehicle under such conditions is challenging: A full braking maneuver may risk rear-end collisions or loss of traction; likewise, any other constant braking profile will pose considerable risk of not achieving a true “safe state”. This paper presents an emergency stopping system to execute a situation-dependent braking maneuver that can resolve system failures up to(but not limited to) a full electrics/electronics failure, with the aim of providing a baseline safety solution for all failure modes (short of mechanical failures) for which no dedicated solution is available. The system is composed of an electronic planning unit and a hydraulic/mechanical subsystem, both of which are implemented and tested in simulated and in real environments.


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    Title :

    General Fail-Safe Emergency Stopping for Highly Automated Vehicles: Paper presented at 9. Tagung Automatisiertes Fahren, München, 21.-22.11.2019


    Contributors:
    Beyerer, Jürgen (author) / Doll, J. (author) / Duerr, F. (author) / Flad, M. (author) / Frey, M. (author) / Gauterin, F. (author) / Hohmann, S. (author) / Knoch, E. (author) / Kohlhaas, R. (author) / Lauber, A. (author)

    Publication date :

    2019-01-01


    Remarks:

    Fraunhofer IOSB


    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    DDC:    629




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