Method and apparatus for implementing a databus voter to select

Details Method and apparatus for implementing a databus voter to select Method and apparatus for implementing a databus voter to select

1994-04-25

1996-05-07

Zanelli, Michael

Boots, shoes, and leggings

364133, 364184, 371 36, G06F 1516, G06F 1114

Patent

active

055152821

ABSTRACT:
Asynchronous, triple redundant primary flight computers (PFC's) (12, 14, 16) produce output command signals carried over a data bus (18) to control redundant actuators (32, 34, 36) in an aircraft flight control system. To prevent the transmission of a fault and a force fight among the redundant actuators, which drive a common aircraft control surface (50), a databus voter (52, 54, 56) associated with each PFC receives all PFC commands and, in accordance with a selection algorithm, outputs a voted one of the PFC command signals. A databus voter monitor, (144) associated with each databus voter, deactivates its associated databus voter if it detects a voted command signal which is inconsistent with the selection algorithm.

REFERENCES:
patent: 3596107 (1971-07-01), Kittrell
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patent: 4849893 (1989-07-01), Page et al.
patent: 4967347 (1990-10-01), Smith et al.
patent: 4995040 (1991-02-01), Best et al.
patent: 5278843 (1994-01-01), Ako
patent: 5297052 (1994-03-01), McIntyre et al.

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