MATLAB: How to get the sample time which Simulink uses for simulation from the command line in MATLAB 7.7(R2008b)

samplingsimulinksolvertime

I want to be able to get the sampling time from command line. The step size is set to auto and the solver is set to Fixed step.

Best Answer

In order to find out the sample times from the command line in MATLAB 7.7 (R2008b), one needs to compile the model at command prompt by using the following command:

[sys,x0,str,ts] = model([],[],[],'compile');
ts

where "model" stands for the name of the model. The sample times are stored in 'ts'.

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MATLAB: Set simulation time and fixed step size for a Simulink model from the command line

If you open the model's Configuration Parameters, for each parameter you can right-click and select "What's This?". This will open up some documentation, which includes a table that shows you how to programmatically use that parameter.

So, you can take that and use it in the sim command as you specified:

>> sim('modelName','StartTime','0','StopTime','10','FixedStep','0.2');

Notice that the properties have to take a string value and not a numeric value. This is where the num2str function comes in handy. For example,

for Ts = 0.01:0.01:0.1
  simout = sim('modelName','FixedStep',num2str(Ts));
end

- Sebastian

MATLAB: Is it possible to create Simulink model SVG screenshots using PRINT command in MATLAB 7.7(R2008b)

To print a model to a SVG file, use the '-dsvg' switch with the PRINT command. As an example, the following code will print the van der Pol Equation demonstration model to a SVG file.

vdp
print -s -dsvg test

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MATLAB: Set simulation time and fixed step size for a Simulink model from the command line

MATLAB: Is it possible to create Simulink model SVG screenshots using PRINT command in MATLAB 7.7(R2008b)

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