Dynamic regulation area
The drawing below shows the dynamic regulation area at given values of Kp. The dynamic area gets smaller,
if the Kp is adjusted to a higher value.
Dynamic regulation band
-100
-75
-50
-25
0
25
50
75
100
44
45
46
47
48
49
50
51
52
53
54
55
56
Output [%]
Frequency
[Hz]
Kp=10
Kp=1
Kp=50
Integral regulator
The main function of the integral regulator is to eliminate offset. The integral action time, Ti, is defined as the
time the integral regulator uses to replicate the momentary change of the output caused by the proportional
regulator.
In the drawing below, the proportional regulator causes an immediate change of 2.5 mA. The integral action
time is then measured when the output reaches 2 × 2.5 mA = 5 mA.
GPC-3 DRH 4189340587 UK
PID controller
DEIF A/S
Page 105 of 122
