Power plants – Combustion products used as motive fluid – Combined with regulation of power output feature
Patent
1984-01-25
1985-04-02
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
Combined with regulation of power output feature
F02C 928
Patent
active
045079153
ABSTRACT:
A proportional fuel fuel control (11) regulates the fuel flow (Wf) from a hydromechanical unit (36) based upon an error signal (E) representing the difference between a demanded speed signal (Nd) and an actual speed signal (Nh). The demanded speed signal (Nd) is generated by an integrator (32) as the time integral of the least of a plurality of acceleration terms (Aa, Ab, Ac, Ad) selected by a select low gate (38). The demanded acceleration term (Aa) is generated by junction (26) as the difference between the demanded signal (Nd) and a scheduled speed signal (Ngs). Stress acceleration terms (Ac, Ad) are generated by junctions (48, 50) and scheduling means (42, 44) which form stress limiter circuits. A stall acceleration term (Ab, is generated by a junction (46) and a scheduling means (40) which form a stall prevention feature.
REFERENCES:
patent: 3006144 (1961-10-01), Arnett et al.
patent: 3152444 (1964-10-01), Peczkowski et al.
patent: 3393691 (1968-07-01), Longstreet et al.
patent: 3587229 (1971-06-01), Peczkowski
patent: 3587230 (1971-06-01), Schmidt
patent: 3630023 (1971-12-01), Lazar et al.
patent: 3820321 (1974-06-01), Burrage
patent: 3832846 (1974-09-01), Leeson
patent: 3856884 (1976-05-01), Eves
patent: 3888078 (1975-06-01), Greune et al.
patent: 4018044 (1977-04-01), Jobey et al.
patent: 4040250 (1977-08-01), Saunders et al.
patent: 4045955 (1977-09-01), Brannstrom et al.
patent: 4100731 (1978-07-01), Janes et al.
patent: 4117668 (1978-10-01), Elsaesser et al.
patent: 4134257 (1979-01-01), Riple
patent: 4134258 (1979-01-01), Hobo et al.
patent: 4171613 (1979-10-01), Schmidt-Roedenbeck et al.
patent: 4188781 (1980-02-01), Johnson et al.
"SD Series" Controls for Aero-Engines--D. A. Caine--Nov. 1975.
Digital Control for Helicopter Powerplants--D. A. Caine & S. Janik--Nov. 1979.
NDEC--A Control Concept for Helicopter Gas Turbines--D. J. Hawes & R. M. Evans--May 1980.
Allied Corporation
Casaregola Louis J.
Marvin William A.
Protigal Stanley N.
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