Please I would like to know if it is possible to plot a transfer function that depends on the variable "s" but also the gain of the feedback.
I give you below the part of my program that is related to my question. (A,B,C,D and alpha are defined already).
H=tf(gain*[1 2*alpha alpha^2],[1 0]);
This program is perfectly working and I can plot the bode diagram of BF(1,1) for example directly.
What I want to do though, is to plot BF(1,1) for different values of the variable gain, let's say for gain varying from 1 to 100, and to have then a 3D representation of BF(1,1) according to the parameter "s" (the frequency) and the parameter gain in the feedback function.
I hope that my question is clear and I hope I find an answer for it.