L33354-XA28UEN-E1-S01, REV. A CLOSED-LOOP TUNING
Copyright © 2020 Amatrol, Inc.
S01-8
SKILL 1 TUNE A CONTROL LOOP USING THE AUTO-TUNE METHOD
F. Create a graph of PV vs. time, similar to figure 1-10 for PV in inches or figure 1-11 for PV in cm, on a piece of graph
paper.
You will use this to plot the response of the system.
Figure 1-9. Graph of PV (inches) vs. Time
Figure 1-10. Graph of PV (cm) vs. Time
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
TIME
(SECONDS)
PV
(INCHES)
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)
4.75
5.0
4.25
4.5
3.75
4.0
3.5
5.5
5.75
5.25
