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

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.

Answer 1

[Fangjun Jiang]

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.

[youjarr]

The ToWorkspace variant i do know but how do you specify it in signal logging?

Edit: Ah I got it right click on the logging sign and then on properties.

Thanks for hat.

[Fangjun Jiang]

right click the signal line, properties, give it a name, check "log signal data" and specify the sample time

Answer 2

[J Chen]

Uee the To Workspace block in the Simulink Sink category and specify the Sample time in the block parameters.

Answer 3

[youjarr]

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?