Why does the denominator of TF change in MATLAB when multiplying by proportional gain?
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Hi everybody, Trying to simulate a unity feedback closed loop system with gain of K
Let's say I want a system:
K = 5 ;
s = tf('s');
G = 10/(s^2+2*s+1);
sysCL = feedback(K*G,1);
The script returns:
sysCL =
50
--------------
s^2 + 2 s + 51
Am I missing something here? I thought K*G the denominator would be (s^2 + 2*s +1). I'm just starting out in my design controls systems course.
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