Deif GPC-3 - Page 105

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