1 Errata of ”Process Control - Theory and applications” Second edition - 2018 Do not hesitate to contact the author for any comment or information:
[email protected] or:
[email protected]
Page 490: Figure 12.5 should be 1.5
u
1
0.5
0
−0.5 0
5
10
15
Normalized time
Fig. 12.5 Pseudo random binary sequence for N = 4
Page 490: Figure 12.6 should be 5
4
u
3
2
1
0
−1 0
20
40 60 Normalized time
80
100
Fig. 12.6 Example of a pseudo random sequence with five levels (partial representation)
2 Page 595: Figure 14.12 should be 2
Output y1 Input u1 Setpoint yc1
1.2
1.5
1
1
Output y1
0 0.6
Input u1
0.5
0.8
-0.5 0.4 -1 0.2
-1.5
0
-2 0
1
2
3
4
5
6
Time (h) 2
Output y2 Input u2 Setpoint yc2
1.2
1.5 1 1
0.5 0.6
Input u2
Output y2
0.8
0
0.4
-0.5
0.2
0
-1 0
1
2
3
4
5
6
Time (h)
Fig. 14.12 Linear quadratic control of Gilles extractive distillation column (criterion weighting: Q = I; R = 0.1 I). Top input u1 and output y1 . Bottom input u2 and output y2
Page 598: Figure 14.13 should be xr✲ z r✲ Feedforward
uf f Feedback controller B ✛
Process
z ✲M ✲ v w ❄ ✄ x ❄ ❄ ✄ ❄y ˆ✲ Gain ✲ ❥ ✲ ❥✲ Gain ✲ ❥✲ ✲ B ✲ ❥✲ x✲ C ✲ ❥ ✲ Kf ✁ ✁ −Kc u u f b ✻ ✻ −✻ yˆ A ✛ A ✛ C ✛
Fig. 14.13 Structure of linear quadratic Gaussian control
3 Page 599: Minor errors are present in Fig. 14.14 which should be xr ✲ z r ✲ Feedforward
uf f Feedback controller B ✛
Process ✲M
z✲
w v y − ❄ ❄ ❄ ❄ ✄ ✄ x ˆ✲ Gain ✲ ❥✲ ✲ ❥ ✲ ❥ ✲ ❥✲ ❥ ✲ Gain ✲ ❥ ✲ ✲ x✲ C ✲ ❥✲ B K ✁ ✁ −K f u c u zr fb ✻ ✻ −✻ ✻ ✻ y ˆ y z A ✛ A ✛ C ✛
Fig. 14.14 Structure of linear quadratic Gaussian control with added output feedback
Page 722, Fig. 17.12: the caption (English, not French) should be: ”Measured temperature (K) of the reactor and set point”.
