Redundant signal circuit

Details Redundant signal circuit Redundant signal circuit

1977-11-25

1979-05-15

Malzahn, David H.

Registers

Systems controlled by data bearing records

Time analysis

307204, 307219, G06F 1100

Patent

active

041543955

ABSTRACT:
The reliability of any system can be enhanced by redundancy. In a turbomachine control system, increased reliability through redundancy is particularly desirable in view of the consequences of an unscheduled shutdown. One area of a turbomachine controls system which is particularly suited to redundant modeling is the speed control circuits. Speed pick-up probes may be subject to severe duty and are critical to the speed control of a turbomachine since they provide the speed feedback signal. The present invention is a solid state circuit which provides an output signal even if either one of two redundant speed feedback probes should fail. This circuit also allows probe replacement while the turbomachine remains in service.

REFERENCES:
patent: 3289097 (1966-11-01), Martin
patent: 3479603 (1969-11-01), Overstreet, Jr.
patent: 3800164 (1974-03-01), Miller
patent: 3803425 (1974-04-01), Carp
patent: 4025762 (1977-05-01), Rossi et al.
patent: 4032757 (1977-06-01), Eccles

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