Integrated and Modular Systems for Commercial ... - Nonstop Systems
Integrated and Modular Systems for Commercial ... - Nonstop Systems
Integrated and Modular Systems for Commercial ... - Nonstop Systems
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lliedSignal<br />
A E R O S P A C E<br />
Integration of controls<br />
• <strong>Integrated</strong> control system has higher criticality<br />
• So, (more) fault tolerance required<br />
* MAFT is not limited to 4 nodes<br />
• T/EMM Controller is based on MAFT: Multi-computer<br />
Architecture <strong>for</strong> Fault Tolerance:<br />
� a plat<strong>for</strong>m of 4* semi-autonomous computer nodes (lanes)<br />
� connected by a serial-link broadcast bus network<br />
� each of the 4 nodes (lanes) is partitioned into a Computing<br />
Module <strong>and</strong> an I/O Module<br />
� the computing module is partitioned into an Applications<br />
Processor <strong>and</strong> an RTEM (Real-Time Executive Module)<br />
co-processor<br />
ref.: C.J. Walter, R.M. Kieckhafer, A.M. Finn: “MAFT: a Multicomputer Architecture <strong>for</strong> Fault-Tolerance in Real-Time Control <strong>Systems</strong>”, Proc. IEEE Real Time<br />
<strong>Systems</strong> Symp., San Diego/CA, Dec. ‘85, 8 pp.<br />
ref.: C.J. Walter: “MAFT: an architecture <strong>for</strong> reliable fly-by-wire flight control”, proc. 8th DASC, San Jose/CA, Oct. ‘88, pp. 415-421<br />
ref.: L. Lamport, R. Shostak, M. Pease: “The Byzantine Generals Problem”, ACM Trans. on Programming Languages & <strong>Systems</strong>, Vol. 4, No. 3, July ‘82, pp. 382-401<br />
ref.: M. Barborak, M. Malek, A. Dahbura: “The Consensus Problem in Fault-Tolerant Computing”, ACM Computing Surveys, Vol. 25, No. 2, June ‘93, pp. 171-220<br />
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