Import data from text file and use it on simulink

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ni david
ni david 2011-9-6
评论： Amit Kumar 2022-4-16
I have a txt file which has my signal versus time in two columns, how can i import it in simulink? I want to see the signal in simulink! thanks a lot in advance.

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回答（3 个）

Paulo Silva
Paulo Silva 2011-9-6
%I don't have your data so I must create my own data
x = 0:.1:1;
y = [x; exp(x)];
fid = fopen('exp.txt', 'wt');
fprintf(fid, '%6.2f %12.8f\n', y);
fclose(fid)
%Now I got the data file, import the data
fid = fopen('exp.txt', 'r');
a = fscanf(fid, '%g %g', [2 inf])
simin = a';
fclose(fid)
%Plot it just to see if it's correct, first column is time and second is data
plot(a(:,1),a(:,2))
Run the code to import your data and in your model insert one From Workspace block and all should work fine, be aware that data will be interpolated if your simulation runs from more than the time you have in your data, please check the From Workspace block configuration.
Grzegorz Knor
Grzegorz Knor 2011-9-6
Ubedullah Saeed
Ubedullah Saeed 2015-5-3
Does that method preserve the data import in simulink for multiple runtime of the model or its just one time process

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