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Using input and output connectors from a sub-model as connectors of a larger model

Fabián Peña
Posted 1 year ago
POSTED BY: Fabián Peña
5 Replies
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POSTED BY: Ankit Naik
Fabián Peña
Fabián Peña
Posted 1 year ago

Dear Ankit,

Thank you very much for the new reply. Your suggestions have been very useful.

Based and inspired by both of your suggestions, I came up with a solution that seems to be a good compromise given the restrictions I have.

An important restriction is that the connectors in the exterior model must not be connected, both visually and logically. Not connecting them avoids visual cluttering due to the potentially large number of connections, and logically, it's necessary for them to be recognized as input and output ports of the overall system.

Using inner and outer declarations, as in one of the examples, indeed avoids the visual cluttering, but the input and output connectors are still connected logically via the inner and outer variables.

What I did was to define a new connector, containing all the signals each interior model (i.e. IOInterior class in the example below) requires, and used it as interface between the each IOInterior instance and the exterior model IOExterior.

Inside the class IOInterior, I used an additional class, called CableTie, to route the signals into the new connector. Formally, this class is not necessary, but having them allows visual representation of the connections rather than just equations written in text. The equations are written instead within in the CableTie class.

As shown in the following screenshot, Mathematica recognizes the input and output variables defined in the new connector and, therefore, they can be used to calculate transfer functions:

enter image description here

Thank you very much again.

Cheers,

Fabián

The model is this:

package InputOutput
  model IOExterior
    IOInterior ioInterior1 annotation(Placement(visible = true, transformation(origin = {0, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    IOInterior ioInterior2 annotation(Placement(visible = true, transformation(origin = {0, 50}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    IOInterior ioInterior3 annotation(Placement(visible = true, transformation(origin = {0, -47.768}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    IOInterior ioInterior4 annotation(Placement(visible = true, transformation(origin = {0, -80}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    IOInterior ioInterior5 annotation(Placement(visible = true, transformation(origin = {0, 80}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    IOConnector ioConnector5 annotation(Placement(visible = true, transformation(origin = {-46.612, 80}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {-49.959, 80}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    IOConnector ioConnector1 annotation(Placement(visible = true, transformation(origin = {-48.046, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {-56.413, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    IOConnector ioConnector2 annotation(Placement(visible = true, transformation(origin = {-50, 50}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {-50.437, 57.727}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    IOConnector ioConnector3 annotation(Placement(visible = true, transformation(origin = {-40, -47.688}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {-43.744, -53.783}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    IOConnector ioConnector4 annotation(Placement(visible = true, transformation(origin = {-40, -80}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {-44.461, -82.468}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
  equation
    connect(ioConnector5, ioInterior5.ioConnector) annotation(Line(visible = true, origin = {-28.955, 80}, points = {{-17.657, 0}, {17.657, 0}}, color = {64, 64, 64}));
    connect(ioConnector2, ioInterior2.ioConnector) annotation(Line(visible = true, origin = {-30.649, 50}, points = {{-19.351, 0}, {19.351, 0}}, color = {64, 64, 64}));
    connect(ioConnector1, ioInterior1.ioConnector) annotation(Line(visible = true, origin = {-29.672, 0}, points = {{-18.374, 0}, {18.374, 0}}, color = {64, 64, 64}));
    connect(ioConnector3, ioInterior3.ioConnector) annotation(Line(visible = true, origin = {-30.433, -47.741}, points = {{-9.567, 0.053}, {-9.567, -0.027}, {19.134, -0.027}}, color = {64, 64, 64}));
    connect(ioConnector4, ioInterior4.ioConnector) annotation(Line(visible = true, origin = {-25.649, -80}, points = {{-14.351, 0}, {14.351, 0}}, color = {64, 64, 64}));
    annotation(Diagram(coordinateSystem(extent = {{-150, -100}, {150, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10})), __Wolfram(ControlPanels(Panel(identifier = "clever-gauss", title = "Untitled", elements = {Slider(variable = u, min = 0, max = 10)}))), Icon(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Rectangle(visible = true, origin = {-98.801, 23.915}, fillColor = {255, 255, 255}, extent = {{-1.199, -0.972}, {1.199, 0.972}}), Rectangle(visible = true, fillColor = {255, 255, 255}, extent = {{-100, -100}, {100, 100}})}));
  end IOExterior;

  model IOInterior
    Modelica.Blocks.Math.Power power1 annotation(Placement(visible = true, transformation(origin = {6.434, 12.349}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    Modelica.Blocks.Math.Power power2 annotation(Placement(visible = true, transformation(origin = {3.566, 56.852}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    CableTie cableTie1 annotation(Placement(visible = true, transformation(origin = {-42.788, -40}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    IOConnector ioConnector annotation(Placement(visible = true, transformation(origin = {-80, -40}, extent = {{-15.219, -15.219}, {15.219, 15.219}}, rotation = 0), iconTransformation(origin = {-112.984, -0}, extent = {{-57.016, -57.016}, {57.016, 57.016}}, rotation = -90)));
  equation
    connect(cableTie1.y1, power2.u) annotation(Line(visible = true, origin = {-23.45, 11.586}, points = {{-8.338, -45.266}, {-3.338, -45.266}, {-3.338, 45.266}, {15.015, 45.266}}, color = {0, 0, 127}));
    connect(power1.u, cableTie1.y2) annotation(Line(visible = true, origin = {-14.621, -12.551}, points = {{9.056, 24.9}, {4.056, 24.9}, {4.056, -24.9}, {-17.167, -24.9}}, color = {0, 0, 127}));
    connect(power1.y, cableTie1.u2) annotation(Line(visible = true, origin = {14.201, 3.21}, points = {{3.233, 9.139}, {22.371, 9.139}, {22.371, -50.374}, {-45.824, -50.374}}, color = {0, 0, 127}));
    connect(power2.y, cableTie1.u1) annotation(Line(visible = true, origin = {27.515, 27.53}, points = {{-12.949, 29.322}, {35.232, 29.322}, {35.232, -70.072}, {-59.114, -70.072}}, color = {0, 0, 127}));
    connect(ioConnector, cableTie1.ioConnector) annotation(Line(visible = true, origin = {-71.448, -40.063}, points = {{-8.552, 0.063}, {-8.552, -0.031}, {17.104, -0.031}}, color = {64, 64, 64}));
    annotation(Icon(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Rectangle(visible = true, fillColor = {255, 255, 255}, extent = {{-100, -100}, {100, 100}}), Text(visible = true, origin = {-1.248, 120.309}, extent = {{-58.752, -19.691}, {58.752, 19.691}}, textString = "%name%")}));
  end IOInterior;

  connector IOConnector
    input Real u1, u2;
    output Real y1, y2;
    annotation(defaultComponentName = "ioConnector", Icon(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Polygon(visible = true, lineColor = {64, 64, 64}, fillColor = {255, 215, 136}, fillPattern = FillPattern.Solid, points = {{-40, 25}, {-25, 25}, {25, 25}, {40, 25}, {50, 15}, {45, -5}, {40, -20}, {30, -25}, {20, -25}, {-20, -25}, {-30, -25}, {-40, -20}, {-45, -5}, {-50, 15}}, smooth = Smooth.Bezier), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-32.5, 7.5}, {-27.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-2.5, 7.5}, {2.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{27.5, 7.5}, {32.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-17.5, -12.5}, {-12.5, -7.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{12.5, -12.5}, {17.5, -7.5}})}), Diagram(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Text(visible = true, origin = {58.444, 9.854}, textColor = {64, 64, 64}, extent = {{-160, 33.333}, {40, 73.333}}, textString = "%name"), Polygon(visible = true, lineColor = {64, 64, 64}, fillColor = {255, 215, 136}, fillPattern = FillPattern.Solid, points = {{-40, 25}, {-25, 25}, {25, 25}, {40, 25}, {50, 15}, {45, -5}, {40, -20}, {30, -25}, {20, -25}, {-20, -25}, {-30, -25}, {-40, -20}, {-45, -5}, {-50, 15}}, smooth = Smooth.Bezier), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-32.5, 7.5}, {-27.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-2.5, 7.5}, {2.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{27.5, 7.5}, {32.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = Fillern.Solid, extent = {{-17.5, -12.5}, {-12.5, -7.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{12.5, -12.5}, {17.5, -7.5}})}));
  end IOConnector;

  model CableTie
    IOConnector ioConnector annotation(Placement(visible = true, transformation(origin = {-105, 15}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {-115.556, -0.94}, extent = {{-60.94, -60.94}, {60.94, 60.94}}, rotation = -90)));
    Modelica.Blocks.Interfaces.RealOutput y2 annotation(Placement(visible = true, transformation(origin = {-62.923, 23.435}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {110, 25.491}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    Modelica.Blocks.Interfaces.RealOutput y1 annotation(Placement(visible = true, transformation(origin = {-62.923, 45}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {110, 63.209}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    Modelica.Blocks.Interfaces.RealInput u1 annotation(Placement(visible = true, transformation(origin = {-65, -15.512}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {111.887, -25.421}, extent = {{11.887, -11.887}, {-11.887, 11.887}}, rotation = 0)));
    Modelica.Blocks.Interfaces.RealInput u2 annotation(Placement(visible = true, transformation(origin = {-63.543, -43.543}, extent = {{-11.457, -11.457}, {11.457, 11.457}}, rotation = 0), iconTransformation(origin = {111.647, -71.647}, extent = {{11.647, -11.647}, {-11.647, 11.647}}, rotation = 0)));
  equation
    ioConnector.u1 = y1;
    ioConnector.u2 = y2;
    ioConnector.y1 = u1;
    ioConnector.y2 = u2;
    annotation(Diagram(coordinateSystem(extent = {{-150, -90}, {150, 90}}, preserveAspectRatio = true, initialScale = 0.1, grid = {5, 5})), Icon(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Rectangle(visible = true, lineColor = {0, 114, 195}, fillColor = {255, 255, 255}, extent = {{-100, -100}, {100, 100}}, radius = 25), Text(visible = true, textColor = {64, 64, 64}, extent = {{-150, 110}, {150, 150}}, textString = "%name")}));
  end CableTie;
  annotation(uses(Modelica(version = "3.2.3")), Icon(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Polygon(visible = true, origin = {0.248, 0.044}, lineColor = {56, 56, 56}, fillColor = {128, 202, 255}, fillPattern = FillPattern.Solid, points = {{99.752, 100}, {99.752, 59.956}, {99.752, -50}, {100, -100}, {49.752, -100}, {-19.752, -100.044}, {-100.248, -100}, {-100.248, -50}, {-90.248, 29.956}, {-90.248, 79.956}, {-40.248, 79.956}, {-20.138, 79.813}, {-0.248, 79.956}, {19.752, 99.956}, {39.752, 99.956}, {59.752, 99.956}}, smooth = Smooth.Bezier), Polygon(visible = true, origin = {0, -13.079}, lineColor = {192, 192, 192}, fillColor = {255, 255, 255}, pattern = LinePattern.None, fillPattern = FillPattern.HorizontalCylinder, points = {{100, -86.921}, {50, -86.921}, {-50, -86.921}, {-100, -86.921}, {-100, -36.921}, {-100, 53.079}, {-100, 103.079}, {-50, 103.079}, {0, 103.079}, {20, 83.079}, {50, 83.079}, {100, 83.079}, {100, 33.079}, {100, -36.921}}, smooth = Smooth.Bezier), Rectangle(visible = true, origin = {0, -5}, lineColor = {198, 198, 198}, fillColor = {238, 238, 238}, pattern = LinePattern.None, fillPattern = FillPattern.Solid, extent = {{-100, -25}, {100, 25}}), Polygon(visible = true, origin = {-0, -10.704}, lineColor = {113, 113, 113}, fillColor = {255, 255, 255}, points = {{100, -89.296}, {50, -89.296}, {-50, -89.296}, {-100, -89.296}, {-100, -39.296}, {-100, 50.704}, {-100, 100.704}, {-50, 100.704}, {0, 100.704}, {20, 80.704}, {50, 80.704}, {100, 80.704}, {100, 30.704}, {100, -39.296}}, smooth = Smooth.Bezier)}));
end InputOutput;
POSTED BY: Fabián Peña

I would use the expandable connectors as it is visual and better for troubleshooting purposes. Here is an example.

package BusExample
  model InputOutputExterior
    Modelica.Blocks.Interfaces.RealInput u annotation(Placement(visible = true, transformation(origin = {-88.068, 0}, extent = {{-20, -20}, {20, 20}}, rotation = 0), iconTransformation(origin = {-120, -0}, extent = {{-20, -20}, {20, 20}}, rotation = 0)));
    Modelica.Blocks.Interfaces.RealOutput y annotation(Placement(visible = true, transformation(origin = {80, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {110, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    InputOutputInterior inputOutputInterior1 annotation(Placement(visible = true, transformation(origin = {0, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    MyBus myBus2 annotation(Placement(visible = true, transformation(origin = {32.152, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {32.152, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    MyBus myBus1 annotation(Placement(visible = true, transformation(origin = {-40, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {-40, -3.844}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
  equation
    connect(myBus2, inputOutputInterior1.myBus2) annotation(Line(visible = true, origin = {21.076, 0}, points = {{11.076, 0}, {-11.076, 0}}, color = {64, 64, 64}));
    connect(myBus2.y, y) annotation(Line(visible = true, origin = {56.076, 0}, points = {{-23.924, 0}, {23.924, 0}}, color = {64, 64, 64}));
    connect(myBus1, inputOutputInterior1.myBus1) annotation(Line(visible = true, origin = {-25, 0}, points = {{-15, 0}, {15, 0}}, color = {64, 64, 64}));
    connect(u, myBus1.u) annotation(Line(visible = true, origin = {-64.034, 0}, points = {{-24.034, 0}, {24.034, 0}}, color = {1, 37, 163}));
    annotation(__Wolfram(ControlPanels(Panel(identifier = "clever-gauss", title = "Untitled", elements = {Slider(variable = u, min = 0, max = 10)}))), Icon(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Rectangle(visible = true, origin = {-98.801, 23.915}, fillColor = {255, 255, 255}, extent = {{-1.199, -0.972}, {1.199, 0.972}}), Rectangle(visible = true, fillColor = {255, 255, 255}, extent = {{-100, -100}, {100, 100}})}));
  end InputOutputExterior;

  model InputOutputInterior
    Modelica.Blocks.Math.Power power1 annotation(Placement(visible = true, transformation(origin = {0, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    MyBus myBus1 annotation(Placement(visible = true, transformation(origin = {-70, -0}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {-100, 0}, extent = {{-45.752, -45.752}, {45.752, 45.752}}, rotation = -90)));
    MyBus myBus2 annotation(Placement(visible = true, transformation(origin = {80, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {100, -0}, extent = {{-43.792, -43.792}, {43.792, 43.792}}, rotation = -90)));
  equation
    connect(myBus1.u, power1.u) annotation(Line(visible = true, origin = {-41, -0}, points = {{-29, -0}, {29, 0}}, color = {64, 64, 64}));
    connect(power1.y, myBus2.y) annotation(Line(visible = true, origin = {45.5, 0}, points = {{-34.5, -0}, {34.5, 0}}, color = {1, 37, 163}));
    annotation(Icon(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Rectangle(visible = true, fillColor = {255, 255, 255}, extent = {{-100, -100}, {100, 100}})}));
  end InputOutputInterior;

  expandable connector MyBus
    annotation(Icon(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Polygon(visible = true, lineColor = {64, 64, 64}, fillColor = {255, 215, 136}, fillPattern = FillPattern.Solid, points = {{-40, 25}, {-25, 25}, {25, 25}, {40, 25}, {50, 15}, {45, -5}, {40, -20}, {30, -25}, {20, -25}, {-20, -25}, {-30, -25}, {-40, -20}, {-45, -5}, {-50, 15}}, smooth = Smooth.Bezier), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-32.5, 7.5}, {-27.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-2.5, 7.5}, {2.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{27.5, 7.5}, {32.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-17.5, -12.5}, {-12.5, -7.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{12.5, -12.5}, {17.5, -7.5}})}), Diagram(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Text(visible = true, origin = {0, 16.667}, textColor = {64, 64, 64}, extent = {{-160, 33.333}, {40, 73.333}}, textString = "%name"), Polygon(visible = true, lineColor = {64, 64, 64}, fillColor = {255, 215, 136}, fillPattern = FillPattern.Solid, points = {{-40, 25}, {-25, 25}, {25, 25}, {40, 25}, {50, 15}, {45, -5}, {40, -20}, {30, -25}, {20, -25}, {-20, -25}, {-30, -25}, {-40, -20}, {-45, -5}, {-50, 15}}, smooth = Smooth.Bezier), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-32.5, 7.5}, {-27.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-2.5, 7.5}, {2.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{27.5, 7.5}, {32.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-17.5, -12.5}, {-12.5, -7.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{12.5, -12.5}, {17.5, -7.5}})}));
  end MyBus;
  annotation(Icon(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Polygon(visible = true, origin = {0.248, 0.044}, lineColor = {56, 56, 56}, fillColor = {128, 202, 255}, fillPattern = FillPattern.Solid, points = {{99.752, 100}, {99.752, 59.956}, {99.752, -50}, {100, -100}, {49.752, -100}, {-19.752, -100.044}, {-100.248, -100}, {-100.248, -50}, {-90.248, 29.956}, {-90.248, 79.956}, {-40.248, 79.956}, {-20.138, 79.813}, {-0.248, 79.956}, {19.752, 99.956}, {39.752, 99.956}, {59.752, 99.956}}, smooth = Smooth.Bezier), Polygon(visible = true, origin = {0, -13.079}, lineColor = {192, 192, 192}, fillColor = {255, 255, 255}, pattern = LinePattern.None, fillPattern = FillPattern.HorizontalCylinder, points = {{100, -86.921}, {50, -86.921}, {-50, -86.921}, {-100, -86.921}, {-100, -36.921}, {-100, 53.079}, {-100, 103.079}, {-50, 103.079}, {0, 103.079}, {20, 83.079}, {50, 83.079}, {100, 83.079}, {100, 33.079}, {100, -36.921}}, smooth = Smooth.Bezier), Rectangle(visible = true, origin = {0, -5}, lineColor = {198, 198, 198}, fillColor = {238, 238, 238}, pattern = LinePattern.None, fillPattern = FillPattern.Solid, extent = {{-100, -25}, {100, 25}}), Polygon(visible = true, origin = {-0, -10.704}, lineColor = {113, 113, 113}, fillColor = {255, 255, 255}, points = {{100, -89.296}, {50, -89.296}, {-50, -89.296}, {-100, -89.296}, {-100, -39.296}, {-100, 50.704}, {-100, 100.704}, {-50, 100.704}, {0, 100.704}, {20, 80.704}, {50, 80.704}, {100, 80.704}, {100, 30.704}, {100, -39.296}}, smooth = Smooth.Bezier)}));
end BusExample;
POSTED BY: Ankit Naik
Fabián Peña
Fabián Peña
Posted 1 year ago

Another element that may be worth clarifying, is that the input and output connectors in the exterior model will remain disconnected.

I'll use the model to calculate transfer functions in frequency space after linearization, and the names of the connectors will appear as inputs and outputs of the transfer function.
POSTED BY: Fabián Peña
Fabián Peña
Fabián Peña
Posted 1 year ago

Hello Ankit,

Thank you very much for your reply and the example. I appreciate it.

Below there's a modified version of the example, illustrating the situation I refer to. I added another component to the interior model (i.e. inputOutputInterior1.power2) and connected it to the expandable connectors. In order to make it work, in the exterior model I had to add one input and one output in accordance to those changes.

What I want to avoid is having to explicitly write in the exterior model all the inputs and outputs corresponding to the signals in the interior model. In very simple cases this is not too cumbersome, but some of the models I'll use will have at least 10 signals, and I'll need several instances of them.

I tried modifying the example defining an expandable input connector rather than a simple expandable connector, but inside signals don't seem to be accessible this way.

I guess another option would be to use an array of input connectors in the exterior model, but this would not keep the names of the signals in the input models, which are physically meaningful for the final user.

Any additional suggestion would be highly appreciated.

Cheers,

Fabián

package BusExample
  model InputOutputExterior
    Modelica.Blocks.Interfaces.RealInput u1 annotation(Placement(visible = true, transformation(origin = {-88.068, 0}, extent = {{-20, -20}, {20, 20}}, rotation = 0), iconTransformation(origin = {-120, 0}, extent = {{-20, -20}, {20, 20}}, rotation = 0)));
    Modelica.Blocks.Interfaces.RealOutput y1 annotation(Placement(visible = true, transformation(origin = {80, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {110, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    InputOutputInterior inputOutputInterior1 annotation(Placement(visible = true, transformation(origin = {0, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    MyBus myBus2 annotation(Placement(visible = true, transformation(origin = {32.152, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {32.152, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    MyBus myBus1 annotation(Placement(visible = true, transformation(origin = {-40, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {-40, -3.844}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    Modelica.Blocks.Interfaces.RealInput u2 annotation(Placement(visible = true, transformation(origin = {-76.731, 51.632}, extent = {{-20, -20}, {20, 20}}, rotation = 0), iconTransformation(origin = {-76.731, 51.632}, extent = {{-20, -20}, {20, 20}}, rotation = 0)));
    Modelica.Blocks.Interfaces.RealOutput y2 annotation(Placement(visible = true, transformation(origin = {77.448, 50}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {77.448, 50}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
  equation
    connect(myBus2, inputOutputInterior1.myBus2) annotation(Line(visible = true, origin = {21.076, 0}, points = {{11.076, 0}, {-11.076, 0}}, color = {64, 64, 64}));
    connect(myBus1, inputOutputInterior1.myBus1) annotation(Line(visible = true, origin = {-25, 0}, points = {{-15, 0}, {15, 0}}, color = {64, 64, 64}));
    connect(u2, myBus1.u2) annotation(Line(visible = true, origin = {-52.244, 34.421}, points = {{-24.487, 17.211}, {12.244, 17.211}, {12.244, -34.421}}, color = {0, 0, 127}));
    connect(u1, myBus1.u1) annotation(Line(visible = true, origin = {-64.034, 0}, points = {{-24.034, 0}, {24.034, 0}}, color = {0, 0, 127}));
    connect(myBus2.y1, y1) annotation(Line(visible = true, origin = {56.076, 0}, points = {{-23.924, 0}, {23.924, 0}}, color = {64, 64, 64}));
    connect(myBus2.y2, y2) annotation(Line(visible = true, origin = {42.4, 25}, points = {{-10.248, -25}, {-12.4, -25}, {-12.4, 25}, {35.048, 25}}, color = {64, 64, 64}));
    annotation(__Wolfram(ControlPanels(Panel(identifier = "clever-gauss", title = "Untitled", elements = {Slider(variable = u, min = 0, max = 10)}))), Icon(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Rectangle(visible = true, origin = {-98.801, 23.915}, fillColor = {255, 255, 255}, extent = {{-1.199, -0.972}, {1.199, 0.972}}), Rectangle(visible = true, fillColor = {255, 255, 255}, extent = {{-100, -100}, {100, 100}})}));
  end InputOutputExterior;

  model InputOutputInterior
    Modelica.Blocks.Math.Power power1 annotation(Placement(visible = true, transformation(origin = {0, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
    MyBus myBus1 annotation(Placement(visible = true, transformation(origin = {-70, -0}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {-100, 0}, extent = {{-45.752, -45.752}, {45.752, 45.752}}, rotation = -90)));
    MyBus myBus2 annotation(Placement(visible = true, transformation(origin = {80, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0), iconTransformation(origin = {100, -0}, extent = {{-43.792, -43.792}, {43.792, 43.792}}, rotation = -90)));
    Modelica.Blocks.Math.Power power2 annotation(Placement(visible = true, transformation(origin = {0, 47.217}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
  equation
    connect(power2.u, myBus1.u2) annotation(Line(visible = true, origin = {-50.667, 31.478}, points = {{38.667, 15.739}, {-19.333, 15.739}, {-19.333, -31.478}}, color = {0, 0, 127}));
    connect(power2.y, myBus2.y2) annotation(Line(visible = true, origin = {57, 31.478}, points = {{-46, 15.739}, {23, 15.739}, {23, -31.478}}, color = {0, 0, 127}));
    connect(power1.y, myBus2.y1) annotation(Line(visible = true, origin = {45.5, 0}, points = {{-34.5, 0}, {34.5, 0}}, color = {0, 0, 127}));
    connect(power1.u, myBus1.u1) annotation(Line(visible = true, origin = {-41, 0}, points = {{29, 0}, {-29, 0}}, color = {0, 0, 127}));
    annotation(Icon(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Rectangle(visible = true, fillColor = {255, 255, 255}, extent = {{-100, -100}, {100, 100}})}));
  end InputOutputInterior;

  expandable connector MyBus
    annotation(Icon(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Polygon(visible = true, lineColor = {64, 64, 64}, fillColor = {255, 215, 136}, fillPattern = FillPattern.Solid, points = {{-40, 25}, {-25, 25}, {25, 25}, {40, 25}, {50, 15}, {45, -5}, {40, -20}, {30, -25}, {20, -25}, {-20, -25}, {-30, -25}, {-40, -20}, {-45, -5}, {-50, 15}}, smooth = Smooth.Bezier), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-32.5, 7.5}, {-27.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-2.5, 7.5}, {2.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{27.5, 7.5}, {32.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-17.5, -12.5}, {-12.5, -7.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{12.5, -12.5}, {17.5, -7.5}})}), Diagram(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Text(visible = true, origin = {0, 16.667}, textColor = {64, 64, 64}, extent = {{-160, 33.333}, {40, 73.333}}, textString = "%name"), Polygon(visible = true, lineColor = {64, 64, 64}, fillColor = {255, 215, 136}, fillPattern = FillPattern.Solid, points = {{-40, 25}, {-25, 25}, {25, 25}, {40, 25}, {50, 15}, {45, -5}, {40, -20}, {30, -25}, {20, -25}, {-20, -25}, {-30, -25}, {-40, -20}, {-45, -5}, {-50, 15}}, smooth = Smooth.Bezier), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-32.5, 7.5}, {-27.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-2.5, 7.5}, {2.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{27.5, 7.5}, {32.5, 12.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{-17.5, -12.5}, {-12.5, -7.5}}), Ellipse(visible = true, lineColor = {64, 64, 64}, fillColor = {64, 64, 64}, fillPattern = FillPattern.Solid, extent = {{12.5, -12.5}, {17.5, -7.5}})}));
  end MyBus;
  annotation(Icon(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {10, 10}), graphics = {Polygon(visible = true, origin = {0.248, 0.044}, lineColor = {56, 56, 56}, fillColor = {128, 202, 255}, fillPattern = FillPattern.Solid, points = {{99.752, 100}, {99.752, 59.956}, {99.752, -50}, {100, -100}, {49.752, -100}, {-19.752, -100.044}, {-100.248, -100}, {-100.248, -50}, {-90.248, 29.956}, {-90.248, 79.956}, {-40.248, 79.956}, {-20.138, 79.813}, {-0.248, 79.956}, {19.752, 99.956}, {39.752, 99.956}, {59.752, 99.956}}, smooth = Smooth.Bezier), Polygon(visible = true, origin = {0, -13.079}, lineColor = {192, 192, 192}, fillColor = {255, 255, 255}, pattern = LinePattern.None, fillPattern = FillPattern.HorizontalCylinder, points = {{100, -86.921}, {50, -86.921}, {-50, -86.921}, {-100, -86.921}, {-100, -36.921}, {-100, 53.079}, {-100, 103.079}, {-50, 103.079}, {0, 103.079}, {20, 83.079}, {50, 83.079}, {100, 83.079}, {100, 33.079}, {100, -36.921}}, smooth = Smooth.Bezier), Rectangle(visible = true, origin = {0, -5}, lineColor = {198, 198, 198}, fillColor = {238, 238, 238}, pattern = LinePattern.None, fillPattern = FillPattern.Solid, extent = {{-100, -25}, {100, 25}}), Polygon(visible = true, origin = {-0, -10.704}, lineColor = {113, 113, 113}, fillColor = {255, 255, 255}, points = {{100, -89.296}, {50, -89.296}, {-50, -89.296}, {-100, -89.296}, {-100, -39.296}, {-100, 50.704}, {-100, 100.704}, {-50, 100.704}, {0, 100.704}, {20, 80.704}, {50, 80.704}, {100, 80.704}, {100, 30.704}, {100, -39.296}}, smooth = Smooth.Bezier)}));
end BusExample;
POSTED BY: Fabián Peña
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