Controller Parameter Settings - Delphin Expert Logger Manual

Expert Logger
Controller
(with com-
pensation)
1. Order
Dead time and
delay
2. Order
Delay
1. Order and
small dead
time (delay
time)
Higher order
Without com-
pensation and
with delay
4.11.14.2
Controller parameter settings
Various methods have been established to determine controller para-
meters. This introduction describes the Chien, Hrones and Reswik con-
figuration guidelines. You can find further configuration guidelines and
methods in related specialist literature.
Configuration guidelines for control paths with equalisation:
Determine the following control path characteristic values from the control
path step response:
Process gain KS
l
Compensation time Tg
l
Delay time TU
l
For systems with dead time, the equivalent dead time Tu + Tt is used in place
l
of the delay time Tu.
You can specify the controller parameters (reference values) according to
the following table:
Delphin Technology AG
type
Loop P
Unsuit-
able
Refer-
ence
Unsuit-
able
Setpoint
(without
delay)
I PI
PID
Worse
Bad
than PID
Unsuit- Inter-
able ference
A little
Worse
worse than
than PID
PID
Dis-
Unus-
turbance
able,
(without
unstable
delay)
144
PD PID
turbance
Setpoint
Bad and dis-
turbance
Setpoint Dis-
with turbance
delay with delay
time time
Setpoint
Unsuit-
and dis-
able
turbance
Refer- Inter-
ence ference
Expert Logger Manual
Januar 2018