PID controller tuning with GA optimization errer
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i used simulink for PID controller with GA
code
function z = pidgam(x)
kp=x(1);
ki=x(2);
kd=x(3);
out = sim('pidga.slx','SrcWorkspace','Current');
iae = sum(abs(out.get('error')));
y = iae;
z = y;
and gatool
para = 3
use optimtool get error
Optimization running. Error running optimization. Undefined function 'abs' for input arguments of type 'timeseries'.
um... help me
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