Storing the clock time into a vector in simulink
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Hi,
I wanted to know how can I use embedded matlab block in simulink to store the clock time into a vector?
I am using time clock as the input to embedded matlab block and trying to store that in a vector variable which is the output of embedded matlab block? Is this a right way to do, if not how else can I do it?
It would be of great help, if you could suggest or advise me on how to do it.
Thanks!!
3 Comments
Fangjun Jiang
on 26 Sep 2011
What is your goal? There might be alternatives other than using the embedded matlab function block.
Answers (1)
Fangjun Jiang
on 26 Sep 2011
For this task, I recommend not to use the Embedded MATLAB Function block. As you can see, if your simulation just started for a short period of time, you won't be able to run trapz(t(50:150),v(50:150)) because the 150th data point is not available yet. The Embedded MATLAB Function block in the Simulink model will typically run at every time step.
You can use the "To Workspace" block to log the data. Using the 'Structure with Time" save format will log the time and value at once. Once the simulation is done and the data is logged, you can post-process the data using trapz().
3 Comments
Fangjun Jiang
on 26 Sep 2011
For that, maybe you can play with the persistent declaration of the variable. doc persistent
I am still thinking this approach is awkward. Can't you put an Integrator block inside a triggered subsystem and trig the subsystem at t=150 seconds.
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