Modelica.Fluid.Examples.ControlledTankSystem.Utilities

Package Content

Name	Description
TankController	Controller for tank system
NormalOperation	Normal operation of tank system (button start pressed)
RadioButton	Button that sets its output to true when pressed and is reset when an element of 'reset' becomes true

Modelica.Fluid.Examples.ControlledTankSystem.Utilities.TankController

Information

Parameters

Type	Name	Default	Description
Height	maxLevel		Fill level of tank 1 [m]
Height	minLevel		Lowest level of tank 1 and 2 [m]
Time	waitTime		Wait time, between operations [s]

Connectors

Type	Name	Description
input BooleanInput	start
input BooleanInput	stop
input BooleanInput	shut
input RealInput	level1
input RealInput	level2
output BooleanOutput	valve1
output BooleanOutput	valve2
output BooleanOutput	valve3

Modelica definition

model TankController "Controller for tank system"
      extends Modelica.StateGraph.Interfaces.PartialStateGraphIcon;
  parameter SI.Height maxLevel "Fill level of tank 1";
  parameter SI.Height minLevel "Lowest level of tank 1 and 2";
  parameter SI.Time waitTime "Wait time, between operations";

  Modelica.StateGraph.InitialStep s1(nIn=2);
  Modelica.Fluid.Examples.ControlledTankSystem.Utilities.NormalOperation normal(
    maxLevel=maxLevel,
    minLevel=minLevel,
    waitTime=waitTime);
  Modelica.StateGraph.Transition T1(condition=start);
  Modelica.StateGraph.Transition T2(condition=level2 < minLevel);
  Modelica.StateGraph.Transition T3(condition=stop);
  Modelica.StateGraph.Step s2(nOut=2);
  Modelica.StateGraph.Transition T4(condition=start);
  Modelica.StateGraph.Transition T5(condition=shut);
  Modelica.StateGraph.Step emptyTanks;
  Modelica.StateGraph.Transition T6(condition=level1 < minLevel and level2
         < minLevel);
  Modelica.Blocks.Interfaces.BooleanInput start;
  Modelica.Blocks.Interfaces.BooleanInput stop;
  Modelica.Blocks.Interfaces.BooleanInput shut;
  Modelica.Blocks.Interfaces.RealInput level1;
  Modelica.Blocks.Interfaces.RealInput level2;
  Modelica.Blocks.Interfaces.BooleanOutput valve1;
  Modelica.Blocks.Interfaces.BooleanOutput valve2;
  Modelica.Blocks.Interfaces.BooleanOutput valve3;
  Modelica.Blocks.Sources.BooleanExpression setValve1(y=normal.fillTank1.
        active);
  Modelica.Blocks.Sources.BooleanExpression setValve2(y=normal.fillTank2.
        active or emptyTanks.active and level1 > minLevel);
  Modelica.Blocks.Sources.BooleanExpression setValve3(y=normal.emptyTank2.
        active or emptyTanks.active and level2 > minLevel);
equation 

  connect(s1.outPort[1], T1.inPort);
  connect(T1.outPort, normal.inPort);
  connect(normal.outPort, T2.inPort);
  connect(T5.outPort, emptyTanks.inPort[1]);
  connect(emptyTanks.outPort[1], T6.inPort);
  connect(setValve1.y, valve1);
  connect(setValve2.y, valve2);
  connect(setValve3.y, valve3);
  connect(normal.suspend[1], T3.inPort);
  connect(T3.outPort, s2.inPort[1]);
  connect(level1, normal.level1);
  connect(s2.outPort[1], T5.inPort);
  connect(s2.outPort[2], T4.inPort);
  connect(T2.outPort, s1.inPort[1]);
  connect(T6.outPort, s1.inPort[2]);
  connect(T4.outPort, normal.resume[1]);
end TankController;

Modelica.Fluid.Examples.ControlledTankSystem.Utilities.NormalOperation

Information

Extends from Modelica.StateGraph.PartialCompositeStep (Superclass of a subgraph, i.e., a composite step that has internally a StateGraph).

Parameters

Type	Name	Default	Description
Height	maxLevel		Fill level of tank 1 [m]
Height	minLevel		Lowest level of tank 1 and 2 [m]
Time	waitTime		Wait time between operations [s]
Exception connections
Integer	nSuspend	1	Number of suspend ports
Integer	nResume	1	Number of resume ports

Connectors

Type	Name	Description
Step_in	inPort
Step_out	outPort
CompositeStep_suspend	suspend[nSuspend]
CompositeStep_resume	resume[nResume]
input RealInput	level1

Modelica definition

model NormalOperation 
  "Normal operation of tank system (button start pressed)"
      extends Modelica.StateGraph.PartialCompositeStep;
  parameter SI.Height maxLevel "Fill level of tank 1";
  parameter SI.Height minLevel "Lowest level of tank 1 and 2";
  parameter SI.Time waitTime "Wait time between operations";

  Modelica.Blocks.Interfaces.RealInput level1;
  Modelica.StateGraph.Step fillTank1;
  Modelica.StateGraph.Transition T1(condition=level1 > maxLevel);
  Modelica.StateGraph.Step fillTank2;
  Modelica.StateGraph.Transition T3(condition=level1 < minLevel);
  Modelica.StateGraph.Step emptyTank2;
  Modelica.StateGraph.Step wait1;
  Modelica.StateGraph.Transition T2(enableTimer=true, waitTime=waitTime);
  Modelica.StateGraph.Step wait2;
  Modelica.StateGraph.Transition T4(enableTimer=true, waitTime=waitTime);
equation 
  connect(fillTank1.inPort[1], inPort);
  connect(fillTank1.outPort[1], T1.inPort);
  connect(fillTank2.outPort[1], T3.inPort);
  connect(emptyTank2.outPort[1], outPort);
  connect(wait1.outPort[1], T2.inPort);
  connect(T2.outPort, fillTank2.inPort[1]);
  connect(T1.outPort, wait1.inPort[1]);
  connect(wait2.outPort[1], T4.inPort);
  connect(T3.outPort, wait2.inPort[1]);
  connect(T4.outPort,emptyTank2.inPort[1]);
end NormalOperation;

Modelica.Fluid.Examples.ControlledTankSystem.Utilities.RadioButton

Information

Parameters

Type	Name	Default	Description
Time	buttonTimeTable[:]		Time instants where button is pressend [s]
Time varying expressions
Boolean	reset[:]	{false}	Reset button to false, if an element of reset becomes true

Connectors

Type	Name	Description
output BooleanOutput	on

Modelica definition

block RadioButton 
  "Button that sets its output to true when pressed and is reset when an element of 'reset' becomes true"

  parameter Modelica.SIunits.Time buttonTimeTable[:] 
    "Time instants where button is pressend";
  input Boolean reset[:]={false} 
    "Reset button to false, if an element of reset becomes true";

  Modelica.Blocks.Interfaces.BooleanOutput on;
protected 
  Modelica.Blocks.Sources.BooleanTable table(table=buttonTimeTable);
algorithm 
  when pre(reset) then
     on := false;
  end when;

  when change(table.y) then
     on := true;
  end when;
end RadioButton;