Simulink Control Design™ - MathWorks

Closed-Loop Simulations

We now verify that the tuned autopilot satisfies the design requirements. First compare

the step response of with the step response of the reference model. Again use

getIOTransfer to compute the tuned closed-loop transfer from Nzc to Nz:

Gref = tf(1.7^2,[1 2*0.7*1.7 1.7^2]); % reference model

T = getIOTransfer(ST,'Nzc','Nz'); % transfer Nzc -> Nz

figure, step(T,'b',Gref,'b--',6), grid,

ylabel('N_z'), legend('Actual response','Reference model')

13 Control System Tuning Examples