Environmental Engineering Reference
In-Depth Information
where the complex frequency
is the complex frequency
s
normalised to
The normalised overshoot
frequency and correspondent peak (as
functions of
and
K
) are now determined
to be
The magnitude of the frequency response normalised to versus
for different values of
K
, is plotted in Fig. 4.9. It can be noted that
condition
means a maximally flat frequency response.
Moreover, for a given
the bandwidth diminishes for decreasing values
o
f
K.
The poles of the closed-loop amplifier can be also expressed as
and the response to an input unitary step (assuming underdamped behaviour)
is
