Experimental comparison of speed : fuel-flow and speed-area controls on a turbojet engine for small step disturbances

Wenzel, L M Hart, C E Craig, R T
March 1957

Optimum proportional-plus-integral control settings for speed - fuel-flow control, determined by minimization of integral criteria, correlated well with analytically predicted optimum settings. Engine response data are given for a range of control settings around the optimum. An inherent nonlinearity in the speed-area loop necessitated the use of nonlinear controls. Response data for two such nonlinear control schemes are presented.

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