Start matlab script (.m-File) after clicking run in Simulink CarMaker

Hey guys,

i have a question. I have a simulink model of a CarMaker simulation and a matlab script to plot the received data from simulink.

My aim is to run the simulation via simulink and the matlab script shall be started automatically and plot the current data from simulink simultaneously. Is there any chance to realize it? I tried Callbacks but it didn't work the way i wanted it.

Thanks for your help!

Greetings,

mr.zengin

Answer 1

[Fangjun Jiang]

Clicking Run in Simulink or in CarMaker will start the simulation. What you need is to specify the "StopFcn" callback at the model properties. set it as the .m script that you want to run after the simulation stops.

[mr.zengin]

Thank you! But is there any chance to run simulink and my .m script simultaneously?

[Fangjun Jiang]

You might want this.

https://www.mathworks.com/help/simulink/ug/create-custom-visualizations-during-simulation.html

[mr.zengin]

Thank you so much!

This tip is very helpful, but i still couldn't make it work :(

Can you have a look on my simulink model, the properties and my matlab function please? I just want to plot the signals which i receive from the CarMaker simulation (you can see them in the screenshot, NearPnt dsx and Nearpnt ds y).

Thank you!

Greetings,

mr.zengin

function hir(sigsOut{1}.Values.Time, sigsOut{1}.Values.Data, sigsOut{2}.Values.Data)

time = sigsOut{1}.Values.Time
dx_HIR = sigsOut{1}.Values.Data;
dy_HIR = sigsOut{2}.Values.Data;

plot(time,dx_HIR)

end

[Fangjun Jiang]

Read the document carefully and follow it step by step. The first input argument is always the signal, you can name it whatever you want but has to be a valid variable name. The second is time. The third and after are parameters. You function should look like:

function hir(SignalName,time, FigureNumber)
figure(FigureNumber);
hold on;
plot(time, SignalName);
end

[mr.zengin]

Hello,

thank you for your response!

Unfortunately we couldn't make it work :/ Is there any chance, you can give us another example than the vdp model?

We looked for another examples but we couldn't find any explanations for what the parameters after "time" do? And where they come from..?

Thank you!

Greetings,

mrzengin

[Fangjun Jiang]

Did you make it work as expected following the document and the vdp model?

The "parameter" comes from the block dialog, "Data Access" tab, "Function Parameters: 1" as shown in the only image in that document link. Here "1" is the figure number. If you change it to be "3", then the signal curve will be plotted in Figure(3), instead of Figure(1).

[mr.zengin]

Thank you so much for your quick respond.

We did our first testrun and it worked! :)

Thank you and greetings,

mr.zengin

[mr.zengin]

Hi me again :)

is it also possible to plot the data from sigsOut simultaneously to the simulation? :)

[Fangjun Jiang]

If sigsOut is a data log in the config, inport and export, then no. That data log only happened after the simulation.

Beside the approach in above link, a more generic approach is to use "RuntimeObject"

https://www.mathworks.com/help/releases/R2022b/simulink/ug/accessing-block-data-during-simulation.html

[mr.zengin]

Hi,

thank you so much, we'll try it.

Greetings,

mr.zengin