How to design PI controllers within Maltab?
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Sam Chak
il 20 Apr 2022
If the result from the PID Tuner app can be admitted as the design solution, then just do so to directly obtain and .
Otherwise, you may have to design the PI controller manually, by finding the Characteristic Equation.
For example, since the PI controller is given by , can you compute the Closed-loop system for us to see?
%% Simulation
s = tf('s');
Gp = 1/(0.52*s + 1)
Gc = 131/25 + (468/25)/s
Gcl = feedback(Gp*Gc, 1);
Gcl = minreal(Gcl)
figure(1)
step(Gcl, 3) % step response for 3 seconds
figure(2)
rlocus(Gcl) % root locus to evaluate the stability
Results:
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