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Problem 4.01 PP
If S is the sensitivity of the unity feedback system to changes in the plant transfer function and T 
is the transfer function from reference to output, show that S+ T =
Step-by-step solution
step 1 of 1 ^
Given that S is the sensitivity of the unity fe edback system to changes in the plant transfer 
function and T is the transfer function &om reference to output.
Given that S is the sensitivity of the unity fe edback sjrstem to changes in the plant transfer 
function and T is the transfer function from reference to output.
We know that
^ ^
S + T = — 5
s + r =
1 + 01D,i 1 + ODd
1 + GfDd
T =
1 + GZ)„ 
G D .
| g + r = i|