Burkert 1067 Manuel Utilisateur page 92

APPENDIX
dY
dt
Control range
Characteristic
Characteristics :
A pure I controller eliminates the effects of occuring disturbances completely. Therefore, it has a
favorable static response. Owing to its finite manipulating speed, it operates more slowly than the P
controller and tends to oscillate. Therefore, it is relatively unfavorable from the dynamic point of view.
D component :
Function :
Y= Kd
Kd ist the derivative action coefficient.
The higher Kd is, the stronger the D influence is.
X
Xd
Y
Step response
Characteristics :
A controller with a D component reacts to changes in the controlled variable and is accordingly
capable of dissipating occurring deviations faster.
Xd
Xd
d Xd
dt
t
t
POSITIONER 1067
X
Xd
Y
Ymax
Ymin
Manipulating time
Step response
X
Y
Rise response
E-40-
t
t
Ti
t
t