how make iteration for simulink model

2023 6 3
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更新时间：2023 10 30
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I designed a model in simulink using Reinforcement Learning, I want to run the model 1000 without using loop. can help me, please?

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Tushar
Tushar 2023-6-3

1 个投票

Hi Srwa,
To run a Simulink model multiple times without using an explicit loop, you can utilize the Batch Simulation feature in Simulink. Batch Simulation allows you to execute a model multiple times with different input configurations or parameters.
Here's a step-by-step guide to running a Simulink model 1000 times using Batch Simulation:
  1. Open your Simulink model in MATLAB.
  2. Go to the "Simulation" tab in the Simulink toolbar and click on "Model Configuration Parameters."
  3. In the "Configuration Parameters" dialog box, navigate to the "Callbacks" tab.
  4. Under the "Model callbacks" section, locate the "PreLoadFcn" callback. In the text box next to it, enter the following MATLAB code:
assignin('base', 'numSimulations', 1000);
This code will assign the value 1000 to a variable named numSimulations in the base workspace. We will use this variable to keep track of the number of simulations.
  1. Click on the "OK" button to close the "Configuration Parameters" dialog box.
  2. In the Simulink Editor, right-click on your model canvas and select "Open Model Callbacks" -> "PreLoadFcn."
  3. In the MATLAB Editor that opens, add the following code:
persistent simulationCount;
if isempty(simulationCount)
simulationCount = 1;
else
simulationCount = simulationCount + 1;
end
if simulationCount > numSimulations
set_param(gcs, 'SimulationCommand', 'stop');
end
  1. Save the changes and close the MATLAB Editor.
  2. Go back to the "Simulation" tab in the Simulink toolbar and click on "Batch Simulation."
  3. In the "Batch Configuration" dialog box, specify the desired number of simulations (in your case, enter 1000).
  4. Optionally, you can configure other simulation parameters such as variable-step or fixed-step solvers, simulation time, etc., according to your model requirements.
  5. Click on the "OK" button to start the batch simulation.
I hope this helps.

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Diwakar Diwakar
Diwakar Diwakar 2023-6-4

2 个投票

you can make use of the "sim" function in MATLAB. You can call the "sim" function within a loop and specify the number of iterations you want to run. Here's an example MATLAB code that runs a Simulink model 1000 times:
try this sample of code:
% Define the number of iterations
numIterations = 1000;
% Disable the Simulink model from opening during each iteration
set_param('your_model_name', 'OpenAfterCompile', 'off');
% Run the Simulink model for the specified number of iterations
for i = 1:numIterations
% Set any necessary model parameters or inputs here (if needed)
% ...
% Run the Simulink model
sim('your_model_name');
% Extract the necessary outputs or perform any desired post-processing here
% ...
end

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