[Simulink] Not to process for a period of time

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Georgiy
Georgiy 2014-6-9
评论： Georgiy 2014-6-13
Hello, I have a MATLAB function block takes an input value (one per second) and after some calculations outputs it. How I force this block to stop outputting the signals for a given period of time? Let's say I have a signal:
[1,2,3,4,5,6,7,8,9,10]
And code outputs values larger than 3. I need it to stop outputting for 2 seconds if it indeed finds value larger than 3. So without output stopping, this block will output:
[4,5,6,7,8,9,10]
because these are indeed larger than 3. I need it to output:
[4,7,10]
i.e. it finds value larger than 3, then stops outputting for 2 iterations (2 seconds) and continues.
Thank you!

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Philipp Maier
Philipp Maier 2014-6-12
I can think of one way that might solve this:
Inside the MATLAB Function Block, you could define a persistent variable. The variable would allow you to retain it's value in memory between calls to the function. In other words, you will be able to use this variable to count the two seconds after your output was larger than 3. For example:

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