MATLAB Answers

Log simulink (variable step) data with with one sample time!

1 view (last 30 days)
s0ter48
s0ter48 on 4 May 2021
Edited: s0ter48 on 4 May 2021
Hello guys,
is there a way to log signals with one sample time?
I habe an system model which works with variable steps. Form 1e-3s to 50e-6s.
For the post-processing i would like to save all data to an Excel or plot data wih origins have different sample times.
At the moment my ways is to youse a rate transition block.
Is there a more elegant way?
Thanks in advance.

Accepted Answer

Fangjun Jiang
Fangjun Jiang on 4 May 2021
You can always specify the sample time of the data logging (ToWorkspace block or signal logging). Keep in mind though that this actually force the simulation steps to be changed, even when you specify variable step and variable step solver. But if you don't mind the effect, you can go ahead.
Another way is to log the data using inherited sample time and run resample() to do post data processing.
  2 Comments
Fangjun Jiang
Fangjun Jiang on 4 May 2021
right click the signal line, properties, give it a name, check "log signal data" and specify the sample time

Sign in to comment.

More Answers (2)

J Chen
J Chen on 4 May 2021
Edited: J Chen on 4 May 2021
Uee the To Workspace block in the Simulink Sink category and specify the Sample time in the block parameters.

s0ter48
s0ter48 on 4 May 2021
Thanks for the quick response.
I am also logging data from simscape models (e.g.) which is internally in the blocks.
How to handle with that?

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by