Examples
Information
Extends from IndustrialControlSystems.Icons.ExamplesPackage (Examples package icon).
Package Content
Test of a PI digital controller with Automatic Tuning
Information
Description
In this example have been tested the functionalities of the digital PI with Automatic Tuning.
The PI has to control the process with transfer function
Y(s) 1
---- = --------------
U(s) (s + 1)^3
There are three PIs that are automatically tuned. The PIs have different Phase Margin requirements: 45, 60 and 70 respectively.
The first image shows the process variables controlled by the three PIs PV.
There are thre phases:
- Normal mode [0,50]: PIs working with default parameters values,
- Auto Tuning phase [50,120]: PIs excite the processes in order to identify some characteristic parameters,
- Normal mode [120,end]: PIs working with tuned parameters values

Control signals

References
For more information please refers to the following
paper:
Efficient hybrid simulation of autotuning PI controllers
Alberto Leva, Marco Bonvini
8th Modelica Conference, Dresden, Germany
march 20-22, 2011
Extends from Modelica.Icons.Example (Icon for runnable examples).
Test of a PI controller with Automatic Tuning (mixed mode)
Information
Description
In this example have been tested the functionalities of the mixed mode PI with Automatic Tuning.
The PI has to control the process with transfer function
Y(s) 1
---- = --------------
U(s) (s + 1)^3
There are three PIs that are automatically tuned. The PIs have different Phase Margin requirements: 45, 60 and 70 respectively.
The first image shows the process variables controlled by the three PIs PV.
There are thre phases:
- Normal mode [0,50]: PIs working with default parameters values,
- Auto Tuning phase [50,120]: PIs excite the processes in order to identify some characteristic parameters,
- Normal mode [120,end]: PIs working with tuned parameters values

Control signals

References
For more information please refers to the following
paper:
Efficient hybrid simulation of autotuning PI controllers
Alberto Leva, Marco Bonvini
8th Modelica Conference, Dresden, Germany
march 20-22, 2011
Extends from Modelica.Icons.Example (Icon for runnable examples).
Automatically generated Mon May 21 13:34:16 2012.