Buildings.Controls.Continuous.Examples

Information

This package contains examples for the use of models that can be found in Buildings.Controls.Continuous.

Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).

Package Content

Name	Description
LimPID	Example model
PIDHysteresis	Example model
PIDHysteresisTimer	Example model
SignalRanker	Example model
NumberOfRequests	Example model
OffTimer	Example model

Buildings.Controls.Continuous.Examples.LimPID

Information

Modelica definition

model LimPID "Example model"
  extends Modelica.Icons.Example;
  import Buildings;

  Modelica.Blocks.Sources.Pulse pulse(period=0.25);
  Buildings.Controls.Continuous.LimPID limPID(
    controllerType=Modelica.Blocks.Types.SimpleController.PID,
    Ti=1,
    Td=1,
    yMax=1,
    yMin=-1,
    initType=Modelica.Blocks.Types.InitPID.InitialState);
  Buildings.Controls.Continuous.LimPID limPIDRev(
    controllerType=Modelica.Blocks.Types.SimpleController.PID,
    reverseAction=true,
    Ti=1,
    Td=1,
    yMax=1,
    yMin=-1,
    initType=Modelica.Blocks.Types.InitPID.InitialState) 
    "Controller with reverse action";
  Modelica.Blocks.Sources.Constant const(k=0.5);
  Modelica.Blocks.Math.Gain gain(k=-1);
  Buildings.Utilities.Diagnostics.AssertEquality assertEquality(threShold=1e-10);
  Modelica.Blocks.Continuous.LimPID limPIDOri(
    controllerType=Modelica.Blocks.Types.SimpleController.PID,
    Ti=1,
    Td=1,
    yMax=1,
    yMin=-1,
    initType=Modelica.Blocks.Types.InitPID.InitialState);
  Buildings.Utilities.Diagnostics.AssertEquality assertEquality1(
                                                                threShold=1e-10);
equation 
  connect(pulse.y, limPID.u_s);
  connect(pulse.y, limPIDRev.u_s);
  connect(const.y, limPID.u_m);
  connect(const.y, limPIDRev.u_m);
  connect(limPIDRev.y, gain.u);
  connect(gain.y, assertEquality.u2);
  connect(limPID.y, assertEquality.u1);
  connect(pulse.y, limPIDOri.u_s);
  connect(const.y, limPIDOri.u_m);
  connect(assertEquality1.u1, limPIDOri.y);
  connect(assertEquality1.u2, limPID.y);
end LimPID;

Buildings.Controls.Continuous.Examples.PIDHysteresis

Information

Modelica definition

model PIDHysteresis "Example model"
  extends Modelica.Icons.Example;
  import Buildings;

  Buildings.Controls.Continuous.PIDHysteresis con(
    pre_y_start=false,
    controllerType=Modelica.Blocks.Types.SimpleController.PI,
    yMin=0.3,
    Ti=600,
    Td=60);
  Modelica.Blocks.Sources.Constant TSet(k=273.15 + 40) "Set point";
  Modelica.Thermal.HeatTransfer.Components.HeatCapacitor cap(C=1000000, T(start=
         313.15, fixed=true));
  Buildings.HeatTransfer.Sources.PrescribedTemperature TBC;
  Modelica.Thermal.HeatTransfer.Components.ThermalConductor theCon(G=20);
  Modelica.Blocks.Math.Gain gain(k=2000);
  Modelica.Thermal.HeatTransfer.Sensors.TemperatureSensor temSen;
  Buildings.HeatTransfer.Sources.PrescribedHeatFlow Q_flow;
  Modelica.Blocks.Sources.Sine sine(
    freqHz=1/86400,
    offset=273.15,
    amplitude=20,
    phase=-1.5707963267949);
equation 

  connect(TSet.y, con.u_s);
  connect(TBC.port, theCon.port_a);
  connect(theCon.port_b, cap.port);
  connect(con.y, gain.u);
  connect(cap.port, temSen.port);
  connect(temSen.T, con.u_m);
  connect(gain.y, Q_flow.Q_flow);
  connect(Q_flow.port, cap.port);
  connect(sine.y, TBC.T);
end PIDHysteresis;

Buildings.Controls.Continuous.Examples.PIDHysteresisTimer

Information

Modelica definition

model PIDHysteresisTimer "Example model"
  extends Modelica.Icons.Example;
  import Buildings;

  Buildings.Controls.Continuous.PIDHysteresisTimer con(
    yMin=0.3,
    minOffTime=10000,
    controllerType=Modelica.Blocks.Types.SimpleController.PI,
    Ti=60,
    Td=10);
  Modelica.Blocks.Sources.Constant TSet(k=273.15 + 40) "Set point";
  Modelica.Thermal.HeatTransfer.Components.HeatCapacitor cap(C=100000, T(start=
          293.15, fixed=true));
  Buildings.HeatTransfer.Sources.PrescribedTemperature TBC;
  Modelica.Thermal.HeatTransfer.Components.ThermalConductor theCon(G=10);
  Modelica.Blocks.Math.Gain gain(k=800);
  Modelica.Thermal.HeatTransfer.Sensors.TemperatureSensor temSen;
  Buildings.HeatTransfer.Sources.PrescribedHeatFlow Q_flow;
  Modelica.Blocks.Sources.Sine sine(
    freqHz=1/86400,
    offset=273.15,
    amplitude=20,
    phase=-1.5707963267949);
equation 

  connect(TSet.y, con.u_s);
  connect(TBC.port, theCon.port_a);
  connect(theCon.port_b, cap.port);
  connect(con.y, gain.u);
  connect(cap.port, temSen.port);
  connect(temSen.T, con.u_m);
  connect(gain.y, Q_flow.Q_flow);
  connect(Q_flow.port, cap.port);
  connect(sine.y, TBC.T);
end PIDHysteresisTimer;

Buildings.Controls.Continuous.Examples.SignalRanker

Information

Modelica definition

model SignalRanker "Example model"
  extends Modelica.Icons.Example;
  Modelica.Blocks.Sources.Sine sine(freqHz=2);
  Modelica.Blocks.Sources.Pulse pulse(period=0.25);
  Buildings.Controls.Continuous.SignalRanker sigRan(
                                                  nin=3);
  Modelica.Blocks.Sources.ExpSine expSine(freqHz=10);
equation 
  connect(sine.y, sigRan.u[1]);
  connect(pulse.y, sigRan.u[2]);
  connect(expSine.y, sigRan.u[3]);
end SignalRanker;

Buildings.Controls.Continuous.Examples.NumberOfRequests

Information

Modelica definition

model NumberOfRequests "Example model"
  extends Modelica.Icons.Example;
  Buildings.Controls.Continuous.NumberOfRequests numReq(
    nin=2,
    threShold=0,
    kind=0);
  Modelica.Blocks.Sources.Sine sine(freqHz=2);
  Modelica.Blocks.Sources.Pulse pulse(period=0.25);
equation 
  connect(sine.y, numReq.u[1]);
  connect(pulse.y, numReq.u[2]);
end NumberOfRequests;

Buildings.Controls.Continuous.Examples.OffTimer

Information

Modelica definition

model OffTimer "Example model"
  extends Modelica.Icons.Example;
  import Buildings;

  Modelica.Blocks.Sources.BooleanPulse booleanPulse(period=0.2);
  Buildings.Controls.Continuous.OffTimer offTim1;
  Buildings.Controls.Continuous.OffTimer offTim2;
  Modelica.Blocks.Logical.Not not1;
equation 
  connect(booleanPulse.y, offTim1.u);
  connect(booleanPulse.y, not1.u);
  connect(offTim2.u, not1.y);
end OffTimer;