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   Abdul Aziz Ishak, Dept. of Chemical Engineering, Faculty of Engineering, Universiti Malaya, 50603 Kuala Lumpur, MALAYSIA 
   E-mail: aabi@kkps.fk.um.edu.my / Webpage: http://aabi.tripod.com

 PID Tuning


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OPENLOOP DISCRETIZED DATA
All data were captured using Yokogawa VR1000 paperless recorder. These experiments were carefully performed by myself at Process Control Laboratory, Dept. of Industrial Chemistry, Universiti Teknologi MARA, 40450 Shah Alam on July 31, 1998.
 
 

Process Flow increasing Flow decreasing Level increasing Level decreasing
MV1, %
40.0
40.3
40.5
40.5
MV2, %
58.1
28.4
64.9
16.0
Time, s
PV, %
PV, %
PV, %
PV, %
0
57.2
58.1
50.0
50.0
1
57.2
58.1
50.0
50.0
2
57.7
58.1
50.0
50.0
3
61.8
58.1
50.5
50.0
4
65.1
56.9
51.3
49.6
5
67.8
54.8
52.2
48.7
6
69.6
53.4
53.2
47.8
7
71.1
52.2
54.2
47.0
8
72.5
51.5
55.1
46.0
9
73.2
50.8
56.3
45.1
10
73.9
50.2
57.4
44.0
11
74.5
49.9
58.1
43.0
12
74.9
49.5
59.2
42.0
13
75.1
49.3
60.3
41.1
14
75.3
49.2
61.4
40.1
15
75.6
48.9
62.4
39.2
16
75.7
48.9
63.4
38.2
17
75.8
48.8
64.4
37.2
18
76.1
48.7
65.5
36.3
19
76.0
48.6
66.3
35.3
20
76.1
48.5
67.5
34.3
21
76.2
48.5
68.4
33.3
22
76.2
 
69.6
32.4
23
   
70.6
31.4
24
   
71.5
30.4
25
   
72.5
29.5
26
   
73.6
28.6
27
   
74.6
27.6
28
   
75.4
26.7
29
   
76.6
25.7
30
   
77.9
24.8
31
   
78.8
23.8
32
   
79.8
22.8
33
   
80.6
21.9
34
   
81.6
20.9
35
   
82.7
19.9
36
   
83.8
19.0
37
   
84.7
18.0
38
   
85.6
17.1
39
   
86.7
16.2
40
87.6
15.2
View graphs
FlowInc
FlowDec
LevInc
LevDec

Related topic: Performing openloop test using a PID controller.
 

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29 November 2001