Reply To: Fractional PID Controller Design

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#971
Smita
Guest

Hi Aleksei,
I have a doubt.I have transfer function K.e^(o.2s)/20s+1.
I want to control it via IO PID controller first and then with FO PID controller.
I manually did the calc. as per Zeigler Nichols first rule(based on ‘S’ shaped response) and found Kp=120,Ki=300 and Kd=12.

My qn is that when I will control the same transfer function via FOPID controller will these 3 value remain same or these will vary?

As per the tuning rules set by “Duarte Valerio” I got totally different values :
Kp=0.0815
Ki=6.6208
Kd=2.5762
Lambda=0.6804
Mu=0.704

I don’t know which concept is correct? Please explain.

Thanks
Smita