Delta DVP-ES2

4 Temperature Measurement Module DVP04PT-E2
 D (Derivative) Control
The derivative control is cap
able of offering bigger output in response to strong interference and restoring the
control to its original status.
 Control Chart
G(s)
S
1/S K
I
K
P
K
D
+
+
+
+
Dotted lined area: PID commands
Symbol explanation:
MV
: Output value
P
K
: Proportional gain


tE
: Error value
PV
: Present measured value
SV
: Ta rg et v al ue
D
K
: Differential gain

StPV
: Differential value of PV(t)
I
K
: Integral gain

S
tE
1
: Integral value of E(t)
Basic PID Operation F
ormula
  













 StPVK
S
tE
K
tE
K
MV
D
IP
*
111
In which the error is fixed to:
PVSVE 
To avoid the sud
den derivative value that is too big caused by the activation of PID command for the first time,
we therefore adopt the differentiation of PV.
DVP-ES2 Module Manual
-18