L33354-XA28UEN-E1-S01, REV. A CLOSED-LOOP TUNING
Copyright © 2020 Amatrol, Inc.
S01-9
SKILL 1 TUNE A CONTROL LOOP USING THE AUTO-TUNE METHOD
G. Plot the response using the data you collected in substep D.
Your response curve should be similar to the ones in figure 1-12 for PV in inches or figure 1-13 for PV in cm.
The initial value for your response curve will vary depending on how much the level dropped while you were
calculating the new tuning parameters. Your response may have little overshoot, which is good also.
Figure 1-11. Response of the System (PV in inches)
Figure 1-12. Response of the System (PV in cm)
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.5
1.6
1.4
1.3
1.2
1.1
1.0
0
70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300
60
50
40
30
20
10
PV
(INCHES)
TIME
(SECONDS)
SP
0
70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300
60
50
40
30
20
10
PV
(cm)
TIME
(SECONDS)
SP
4.75
5.0
4.25
4.5
3.75
4.0
3.5
5.5
5.75
5.25
