-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
1/20
25/06/2013
1
www.eit.edu.au
10 Tips for Tuningof PID Loops
By
Steve Mackay
www.eit.edu.au
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
2/20
25/06/2013
2
www.eit.edu.au
www.eit.edu.au
Objectives of Tuning (1)
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
3/20
25/06/2013
3
www.eit.edu.au
Objectives of Tuning (2)
www.eit.edu.au
! " # $ "
Other Aspects of Tuning (3,4,5)
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
4/20
25/06/2013
4
www.eit.edu.au
www.eit.edu.au
Loop Controller and Process
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
5/20
25/06/2013
5
www.eit.edu.au
% & "
% # '&
% '$ ( ")
% ) " "
( " "
Steps of Open Loop Tuning
(Reaction Curve)
www.eit.edu.au
Open Loop Tuning Method (2)
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
6/20
25/06/2013
6
www.eit.edu.au
& )
& )
& * )
( )= OP
N L%
( )= =
0 9
3
. %
int
OP N L
T L
( )= =
=
12
2
0 5
. %
.
int
OP N LT L
T Lder
K C
Reaction Curve Calculations
www.eit.edu.au
+ , " " - " "+ * * "+ '$ " " ". /01 +
$ $. " - 2 *+ "
Continuous Cycling - Ziegler & Nichols
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
7/20
25/06/2013
7
www.eit.edu.au
P-only for Continuous Cycling Method
www.eit.edu.au
Reaction Curve Method (Ziegler & Nichols)
# 3 " "
" 4
". " /01 5 " " 6%
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
8/20
25/06/2013
8
www.eit.edu.au
% & " & " .% & " 7(( 8 5 & &96% ) % "
&
!% * $ - " ".":% ) " "
Continuous Cycling Method
www.eit.edu.au
& )
& )
& * )
K K C U = 0 5.
K K
T P
C U
U
=
=
0 45
1 2
.
.int
K K
T P
T P
C U
U
der U
=
=
=
0 6
2
8
.
int
Calculation of Tuning Constants
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
9/20
25/06/2013
9
www.eit.edu.au
First Order Lag
www.eit.edu.au
First Order Lag Response Curve
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
10/20
25/06/2013
10
www.eit.edu.au
9 " "." %%%% " %%%
$ " "" $ $; "
Damped Cycling Method
www.eit.edu.au
Damped Oscillation Decay Ratio
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
11/20
25/06/2013
11
www.eit.edu.au
% & " & "% & " 7(( 8 5 & &96% ) % * $ - "
%
!% < .:% ) " "
Steps of Damped Cycling Method
7 ") & &
www.eit.edu.au
) & &
7 "
5d6 %%% 0%! "" $
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
12/20
25/06/2013
12
www.eit.edu.au
& )
& * )
( )T
P Rd d int .=
1 2 R
P pd
u=
( )
( )T
P R
T P R
d d
der d d
int =
=
2
8
- $. ; %%%%%
Calculate Tuning Constants
www.eit.edu.au
9 " "."
= 5 6
Tuning for NO Overshoot on Start-up
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
13/20
25/06/2013
13
www.eit.edu.au
" ".", & * "
K K
T P
T P
C U
U
der U
=
=
=
0 2
3
2
.
int
Formula for NO Overshoot on Start-up
www.eit.edu.au
9 " "."
" .
Tuning for SOME Overshoot on Start-up
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
14/20
25/06/2013
14
www.eit.edu.au
" ".", & * "
K K
T P
T P
C U
U
der U
=
=
=
0 33
2
3
.
int
Formula for Some Overshoot on Start-up
www.eit.edu.au
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
15/20
25/06/2013
15
www.eit.edu.au
www.eit.edu.au
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
16/20
25/06/2013
16
www.eit.edu.au
www.eit.edu.au
Long Process Deadtimein Closed Loop Control &
The Smith Predictor
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
17/20
25/06/2013
17
www.eit.edu.au
www.eit.edu.au
Illustration of a long conveyor system giving anexcessive
deadtime to the control loop
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
18/20
25/06/2013
18
www.eit.edu.au
www.eit.edu.au
> )
" $
< . $ . #
Choice of Tuning Constant (1)
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
19/20
25/06/2013
19
www.eit.edu.au
, ) "
" .< $
Choice of Tuning Constants (2)
www.eit.edu.au
< ) .
; " .< "# . $ " "
TCPV
SP
T2
Outlet
Inlet
Choice of Tuning Constants (3)
IDC Technologies and EIT - Free Webinar
10 Tips for Tuning of PID Loops
-
8/12/2019 IDC EIT 10 Tips Tuning PID Loops Rev2
20/20
25/06/2013
www.eit.edu.au
If you are interested in further training, please visit:
IDC Technologies:Two-day practical courses available to the
public:
www.idc-online.com
Conferences:http://www.idc-online.com/conferences-main
The Engineering Institute of Technologies
Online Certificate andAdvanced Diploma programs:
www.eit.edu.au
IDC Technologies and EIT - Free Webinar
