Backup control system (BUCS)

Details Backup control system (BUCS) Backup control system (BUCS)

1985-03-22

1988-06-07

Atkinson, Charles E.

Excavating

244194, 364187, G06F 1120

Patent

active

047501740

ABSTRACT:
A backup software program is installed in an isolated portion in the memory of at least one of redundant computers. The backup program performs basically the same functions as the prime program but is dissimilarly programmed to prevent a common software error. Switchover to the backup program occurs either automatically in response to monitors, or manually by the operator (i.e. pilot) when he detects an anomaly.

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Dual Dissimilar Microprocessors Give Fail-Safe Aircraft Control, Control Engineering, Sep. 1982, p. 74.
Snyder, Modular Fault Tolerance Keeps Computer Systems Reliable, Electronic Design, vol. 29, No. 10, May 14, 1981, pp. 163-167.
"Fault Tolerance by Design Diversity: Concepts and Experiments", Algirdas Avizienis and John P. J. Kelly, Computer, Aug. 1984, pp. 67-80.

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