Download

value
2
1.5
1
0.5
0
-0.5
Industrial Automation
P-Controller: Load change
u0 = set-point Kp plant
e = error
m = command
variable
command
u 0 (Solicited)
P-regulator
proportional factor
y 0 = process value
u1 =
disturbance
u 1 (load change)
measurement
controlled
variable
0 1 2 3 4 5 6 7 8 9 10
Not only a set-point change, but a load change causes the error to increase (or decrease).
A load change (disturbance u 1 ) is equivalent to a set-point change
24/40 2.2 Continuous plants and regulation