modelTest_ATPIrelayNCmixedMode

Test of a PI controller with Automatic Tuning (mixed mode)

Extends from Modelica.Icons.Example (Icon for runnable examples).

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

Components

Type	Name	Default	Description
ATPIrelayNCmixedMode	ControllerPm45
Modelica.Blocks.Sources.Step	SP
Modelica.Blocks.Sources.BooleanTable	ATpulse
LinearSystems.Continuous.TransferFunction	ProcessPm45
Modelica.Blocks.Sources.Step	Disturb
Modelica.Blocks.Math.Feedback	sum
ATPIrelayNCmixedMode	ControllerPm60
LinearSystems.Continuous.TransferFunction	ProcessPm60
Modelica.Blocks.Math.Feedback	sum1
ATPIrelayNCmixedMode	ControllerPm70
LinearSystems.Continuous.TransferFunction	ProcessPm70
Modelica.Blocks.Math.Feedback	sum2

Revisions

Industrial Control Systems (v 1.0.0) : April-May 2012