Outer-loop monitor for aircraft automatic flight control system

Details Outer-loop monitor for aircraft automatic flight control system Outer-loop monitor for aircraft automatic flight control system

1983-05-02

1986-05-27

Gruber, Felix D.

Excavating

244194, 364434, 371 68, G05D 100, G06F 1130

Patent

active

045920559

ABSTRACT:
The sense (direction) of outer-loop commands is compared with the sense (direction) of inner-loop signals in an aircraft AFCS. A disparity in sense indicates an outer-loop failure. To reduce nuisance failures the comparison is made only when inner-loop signal thresholds are exceeded and, in the context of outer-loop commands which are pulses, only at the onset of an outer-loop command and for a limited time thereafter.

REFERENCES:
patent: 3624479 (1971-11-01), Callas
patent: 3880385 (1975-04-01), Reynolds et al.
patent: 3969664 (1976-07-01), Camillieri et al.
patent: 4355358 (1982-10-01), Clelford et al.
patent: 4387432 (1983-06-01), Fischer et al.
patent: 4417303 (1983-11-01), Wright et al.
patent: 4484283 (1984-11-01), Verzella et al.

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