Slide 1 Future Perspectives of PID Controllers (industrial process control) Future Perspectives of PID Controllers (industrial process control) Willy Wojsznis IFAC - PID’12 – Brescia Italy IFAC Conference on Advances in PID Control Brescia, 28-30 March 2012
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Slide 1
Future Perspectives of PID Controllers
(industrial process control)
Future Perspectives of PID Controllers
(industrial process control)
Willy Wojsznis
IFAC - PID’12 – Brescia Italy
IFAC Conference on Advances in PID Control
Brescia, 28-30 March 2012
Slide 2
Thoughts Thoughts • Where PID is?
• Why PID ?
• Direction for evolution
• Examples of PID evolution
• Conclusion
IFAC - PID’12 – Brescia Italy
Slide 3
Where PID is? Where PID is?
PID proved it can compete in many applications with new promising techniques, like
Fuzzy Logic
Model based controllers
MPC
Slogans “replace all PID” is not used as10-20 years ago
IFAC - PID’12 – Brescia Italy
Slide 4
Where PID is ? Where PID is ?
IFAC - PID’12 – Brescia Italy
• PID “found” its favorite spot, where it is doing the
better than other techniques
This is the low and intermediate level control in process industry where PID is absolutely dominant control
MPC reign in multivariable control and optimization. PID provide good control at the lower level
Instead of competition – good cooperation
Slide 5
Why PID ? Why PID ?
IFAC - PID’12 – Brescia Italy
• Feedback is universal control
• Intuitive for the human, appreciated by operators
• P I D - the most natural rules
• PID like control used
in nature on various levels
and time scale
(molecular level
- seconds,
species – thousand
of years)
Slide 6
PID – direction for evolution PID – direction for evolution
IFAC - PID’12 – Brescia Italy
Enhanced PID for dealing with special conditions or applications with added logic and calculations