How to run model form m-file and save final values

Hi all.

I already know how to run model form m-file using command

sim(model);

But how to save the final result. I have two Step and Sum block in model.mdl and in m-file

Step_time1 = 1;
Step_value1 = 2;
Step_time2 = 2;
Step_value2 = 3;
sim(step_sum);

Now, how to only import final Sum value at Tend (=5) in m-file, and save it in *.txt.

Thanks.

Answer 1

[nl2605]

The 'Outport' will help you get the values in MATLAB Workspace. From there you can use it in your m-file. If you also want to save it in .txt format, then use fopen,fprintf and fclose.

fileid = fopen('data.txt','w');

fprintf(fileid,Var1,Var2);

fclose(fileid);

where Var1 and Var2 are variable names you want to store in the text file.

[nl2605]

This is the Outport that you can use in Simulink and then you get in the workspace the values as tout and yout. tout stores the time and yout the result. You can use it from there.

[Mike B]

In Workspace I get only tout, but no yout? In Simulation Date Export/Import both values are checked.

[nl2605]

You have to pass the signal to the OutPort. Then you will get yout too. I am posting a picture. Check that.

So now in this case at yout you have two columns, 1st column gives you the value of step signal and second column gives you the value of the addition of sine and step signals.