To help manage the control design of increasingly complex powertrain systems, a powertrain coordination architecture has been proposed. A significant benefit of this architecture is that it enables the algorithm development and implementation to be distributed, from both a workload and architectural perspective. This, in turn, enables a better utilization of supplier expertise on selected subsystems of the control architecture and enables the OEM to focus on those aspects of the control algorithm that are of particular interest to its customers. A great deal of attention must be paid to the interface definitions if the distributed architecture is to function correctly as a complete system. Range, resolution, 'quality', sequencing, and error response of the interface signals must be carefully specified and understood by all subsystems within the distributed control system. To be effective, all OEMs and suppliers that wish to participate in the distributed control architecture must adhere to it. Industry wide common interfaces/trustworthiness standards are under development. At this time, however, it is not clear how rigidly this architecture can be defined without limiting the potential for creativity within the control architecture. The AUTOSAR consortium is currently searching for the right balance between a highly structured/rigidly defined architecture, and an environment that permits creativity and flexibility. In the absence of such a standard, a hybrid solution is proposed that tries to strike a balance between the adherence to a clean interface, and the 're-implementation' of some additional functionality to the powertrain coordinator subsystem, beyond that originally in tended for the powertrain coordinator. This hybrid solution offers many benefits of the distributed control architecture without having to wait until industry standards are adopted by all participants. Reliance solely on a specification to document this interface without sufficient informal communication will lead to substandard system behavior. The interface must bridge not only the signals, but also the differing corporate cultures, philosophies and assumptions. As standard interfaces become more established, the required amount of informal communication can be reduced, but it should never be eliminated, if we are to ensure good system synergy. Future development will focus on modelling of the distributed network to explore the impact of component and subsystem failures on the larger system. In addition we hope that an industry standard will be adopted to devise appropriate standards for communications between modules. When the issues are satisfactorily resolved we will be able to move closer to full, supervisory control.


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    Titel :

    A case for (and against) a distributed powertrain coordination control architecture for complex systems


    Weitere Titelangaben:

    Ein Fall für (und gegen) eine verteilte Koordinationsregelung im Antriebsstrang von komplexen Systemen


    Beteiligte:
    Ohl, Greg (Autor:in)


    Erscheinungsdatum :

    2004


    Format / Umfang :

    5 Seiten, 1 Bild



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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