This paper reports on research conducted by Smiths Industries (SI) Aerospace within the Control Technology Programme (CTP), to ascertain the feasibility of hardware fault tolerance via dynamic software reconfiguration and to demonstrate its viability in the context of a typical real-time avionic application. Hardware fault-tolerant (FT) systems require the physical replication of hardware components, with the component being the smallest configurable unit. The research approach adopted here is to segregate fully the software (functionality) from the hardware, and regard the configurable units as the software functions themselves. Failure of a component within a computing module would therefore require dynamically reconfiguring the affected software functions elsewhere within the module. Furthermore, it would be possible to reconfigure individual functions not only over different processors but also to currently active processors if spare processing capacity was available in those processors. The computing platform for conducting the research comprised a message-based multiprocessor module, on which was developed a distributed operating system layer to support both the initial configuration of the application functions and their reconfiguration as a result of user-instigated failure of the module hardware. Software reconfiguration from both module-local memory and module-external backing store was successfully demonstrated for critical and non-critical functions respectively. Based on the research/development system, a self-contained FT module variant was constructed for integration within the System Digital Control Laboratory (SDCL) at BAe Airbus. This module additionally demonstrated the periodic and aperiodic communication capability of the ARINC 629 Combined Mode Protocol (CP) Databus in supporting both the module's functional operation and configuration/reconfiguration process.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Dynamic software reconfiguration for fault-tolerant real-time avionic systems


    Beteiligte:
    Ellis, S.M. (Autor:in)


    Erscheinungsdatum :

    1997


    Format / Umfang :

    11 Seiten




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    `Dynamic software reconfiguration for fault-tolerant real-time avionic systems'

    Ellis, S. M. / ERA Technology | British Library Conference Proceedings | 1997


    Distributed Fault-Tolerant Avionic Systems: A Real-Time Prespective

    Audsley, N. / Burke, M. / IEEE; Aerospace and Electronics Systems Society | British Library Conference Proceedings | 1998


    An adaptive middleware approach for fault-tolerant avionic systems

    Marquardt, Oliver / Riedlinger, Marc / Ahmadi, Reza et al. | IEEE | 2015


    Real-time emulation of modular avionic systems

    Wilcock, G. W. / ERA Technology | British Library Conference Proceedings | 1992


    Total avionic real-time simulation

    Allen, B. / Clema, J.K. | Tema Archiv | 1974