Means for evaluating data bus architectures and protocols for highly integrated flight control system applications are needed. Described are the criteria and plans to do this by using the NASA/Ames Intelligent Redundant Actuation System (IRAS) experimental set-up. Candidate bus architectures differ from one another in terms of: topology, access control, message transfer schemes, message characteristics, initialization. data flow control, transmission rates, fault tolerance, and time synchronization. The evaluation criteria are developed relative to these features. A preliminary, analytical evaluation of four candidate busses (MIL-STD-1553B, DATAC, Ethernet, and HSIS) is described. A bus must be exercised in a real-time environment to evaluate its dynamic characteristics. A plan for real-time evaluation of these four busses using a combination of hardware and simulation techniques is presented.


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    Title :

    Evaluation Plan of Bus Architectures and Protocols Using the NASA (National Aeronautics and Space Administration) Ames Intelligent Redundant Actuation System


    Contributors:
    P. DeFeo (author) / M. Chen (author)

    Publication date :

    1987


    Size :

    34 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English