Parker EME
Setting up Compax3
192-120103 N13 C3I20T11 / C3I32T11 December 2010
193
Setpoint and disturbance behavior of a control loop
In this chapter you can read about:
Demand behavior .......................................................................................................... 193
Disturbance behavior ..................................................................................................... 193
Test functions ................................................................................................................ 194
Characteristics of a control loop setpoint response ........................................................ 194
The setpoint behavior is the behavior of the control loop for the setpoint variable W.
We assume that the disturbance variable Z=0.
The disturbance behavior describes the behavior of the control loop for disturbance
variable Z. In this case, we assume, in analogy to the setpoint behavior, that the
setpoint variable W=0.
Demand behavior
Controller
Regler
Control Process
Regelstrecke
-
W
X
Z=0!
W: Setpoint value
X: Actual value
Z: Disturbance variable
Disturbance behavior
Controller
Regler
Control Process
Regelstrecke
-
Z
X
W=0!
W: Setpoint value
X: Actual value
Z: Disturbance variable
In order to examine the disturbance and setpoint behavior, the Compax3 setup
software offers 4 jerk functions.