Device for controlling the rotational speed of turbo-jet engines

Details Device for controlling the rotational speed of turbo-jet engines Device for controlling the rotational speed of turbo-jet engines

1977-10-12

1979-10-23

Garrett, Robert E.

Power plants

Combustion products used as motive fluid

Combined with regulation of power output feature

F02C 904

Patent

active

041716132

ABSTRACT:
The commanded rotational speed is compared with the actual rotational speed to produce a deviation signal. This deviation signal is multiplied by a coefficient which is determined by state variables (speed and intake pressure) of the engine and a proportional component plus an integral component of the multiplication product is employed as a control signal. This control signal is checked to make sure that it is outside critical engine states associated with the actual performance of the engine. On this control signal is superposed a signal representing the steady-state fuel flow associated with the commanded rotary speed (or under some circumstances the actual rotary speed) to determine the fuel flow rate to the engine.

REFERENCES:
patent: 3956884 (1976-05-01), Eves
patent: 4006590 (1977-02-01), Itoh
patent: 4018044 (1977-04-01), Joby et al.
patent: 4040250 (1977-08-01), Saunders et al.
patent: 4044554 (1977-08-01), West
patent: 4077204 (1978-03-01), Itoh

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