如何通过 Dymola 中的脚本定义 Combitimetable？

Question

I am trying to perform several simulations in a sequence using a for loop in a script. From simulation to simulation, the only variable to change is the file path of a Combitimetable.

I propagated the variable fileName in order to assign a new path in each iteration. However, when the model reads the extension, changes the timeScale and the resolution is lower than needed. I tried to propagate timeScale too, but without changes. Is there a function to define the Combitimetable variables? Is my only alternative to merge all tables and split the results manually?

Example of the script on a single run (without the for loop):

filePath="RL_30_200g";
dymolaPath = "modelica://customTILComponents/Combitables/Combitimetable_"+filePath+".txt";
fileName= ModelicaServices.ExternalReferences.loadResource(dymolaPath);
result ="Full_Year_Simulation_"+filePath;
timeScale = 1/3600;

translateModel ("customTILComponents.MA_Santoro.FullModels.OptiHorst_FullModel_New_Year_Simulation_Batch");
simulateModel(startTime=0,stopTime=8860,numberOfIntervals=300,method="Dassl",tolerance=0.000001,resultFile=result);

Answer 1

I am not sure where your problem is and how you change fileName . In your question timeScale is also not used anywhere. Anyway, here is how I would do it: add a parameter to your model for fileName . Since it is a string, the only way to change it is via a modifier which can be included in the model name of the simulateModel command.

Here is an example: In your model with the time table, propagate the parameter fileName :

model MyModel
  parameter String fileName="NoName" "File where matrix is stored";
  Modelica.Blocks.Tables.CombiTable1Ds combiTable1Ds(
    tableOnFile=true,
    tableName="x",
    fileName=fileName) annotation (Placement(transformation(extent={{-10,-10},{10,10}})));
  Modelica.Blocks.Sources.Ramp ramp(duration=1) annotation (Placement(transformation(extent={{-60,-10},{-40,10}})));
equation 
  connect(ramp.y, combiTable1Ds.u) annotation (Line(points={{-39,0},{-12,0}}, color={0,0,127}));
  annotation (uses(Modelica(version="4.0.0")));
end MyModel;

Then change the value of fileName in every loop. Here we assume that there are three.mat files available in the workspace, named First.mat , Second.mat and Third.mat .

function batchSim
  input String fileNames[:] = {"First", "Second", "Third"};
algorithm 
  for f in fileNames loop
    simulateModel("MyModel(fileName=\""+f+".mat\")", stopTime=1, resultFile="Full_Year_Simulation_"+f);
  end for;
  annotation(__Dymola_interactive=true);
end batchSim;

This works quite well, but the downside is that the model will be recompiled in every iteration of the for loop, as the modifier has changed. If this is a big problem, define all file paths in a string vector in the model and add an integer parameter for the index. Then use the command simulateExtendedModel and change only the index via the parameters initialNames and initialValues .

Answer 2

Building on the answer by marco (so same model and same external files) an alternative is to make a script such as:

fileNames := {"First", "Second", "Third"};
Advanced.AllowStringParameters:=true;
translateModel("MyModel");
for f in fileNames loop
  fileName:=f;
  simulateModel("MyModel", stopTime=1, resultFile="Full_Year_Simulation_"+f);
end for;

Unfortunately it seems you cannot turn that into a function.