In recent years, the number of control systems in passenger vehicles has increased dramatically. The trend started with antilock brake systems (ABS) and nowadays affects almost all vehicle components. Increasingly, the vehicle control systems are based on electronic control units and electro-mechanical actuators instead of the traditional mechanical and hydraulic systems.This paper discusses a methodology for calculating the probability of a redundant system to fail in a specified time interval after a first fault has occurred. That probability is first derived in general and then specified for a system consisting of independent components having exponential failure rate densities. Four different redundant system configurations of a safety relevant automotive control system are discussed and compared with respect to their reliability characteristics. The four configurations differ in system topologies as well as the intelligence of the system components with respect to self-monitoring.


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    Title :

    Reliability prediction of fault tolerant automotive systems


    Additional title:

    Zuverlässigkeitsvorhersage für fehlertolerante Systeme in fahrzeugtechnischen Anwendungen


    Contributors:
    Theis, I. (author) / Guldner, J. (author) / Orend, R. (author)


    Publication date :

    2000


    Size :

    6 Seiten, 5 Bilder, 1 Tabelle, 4 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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