Page 138 - Practical Control Engineering a Guide for Engineers, Managers, and Practitioners

A New Do11ain and More Process Models ll3

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to-I I I• •\<o\• • • •• • .- ;-"'",
........

to-2~~~--~~~~~~~~~--~~~~~~~
to-4 to-3 to-2 to-t tOO tot
Frequency (Hz)
FIGURE 4-40 Error transmission curve for FOWDT with PI control.

1.4

1.2
1
~
.a
:s._o.s
e
< 0.6
0.4

0.2

0
o 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Frequency (Hz)
FIGURE 4-41 Error transmission curve for FOWDT with PI control, linear axes.