I am having issues trying to get the root locus plot for the following complex transfer function (H):
% Ax = b Form
A = 1.0e+06 *[0.0713 - 0.0073i,...
-1.8793 - 0.0357i];
b = -32.4298;
%TF
G = A\b;
%PI controller gain
Kp = 100; %proportional gain
Ki = 1; %integral gain
K = pid(Kp,Ki); %PI controller
%Open Loop TF
H = G*K;
rlocus(G)
The error I get is the following: "Cannot compute the root locus of models with complex data."
Can I just drop the imaginary parts of the TF (shown below) to do the root locus?
(0.001725-3.277e-05i) s + (1.725e-05-3.277e-07i)
------------------------------------------------
s