Nonminimum Phase
•Example
16.2
•
bopt(P2) will be small if |P2(jw)| is large around w =1, the modulus of the right-half plane zero.
Note that
bopt(L/s) = 0.707 for any L and bopt(P2)® 0.707 as
K ® 0. This is because |P2(jw)| around the frequency of the
right-half plane zero is very small as K ® 0.
Figure 16.8: Frequency responses
of P2 and P3 for K = 0.1, 1, and 10
