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Time dependent matrix entry
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Christo van Rensburg
il 26 Ott 2021
Commentato: Christo van Rensburg
il 28 Ott 2021
Good day,
I've got a repeating sequence block with a 1x2-matrix for the durations of the output values. I however need to change these values, each entry, according to a ramp function that implements a linear increase. Below is a setup of the model I currently have in Simulink.
Any idea on how I can achieve this?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/779293/image.png)
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Jon
il 26 Ott 2021
Modificato: Jon
il 26 Ott 2021
Under source blocks in the Simulink library there is a block called Ramp. It seems like this should work for your purpose.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/779528/image.png)
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Jon
il 27 Ott 2021
Modificato: Jon
il 27 Ott 2021
I now see you want the square wave to go from say 0 to 5 rather than -1 to 1. You can just add 1 to the output of the sign block (using a sum block and constant) and then scale it with a gain block.
If you need the on and off (low and high values) duration to be different, you can offset the chirp signal (add a constant) before you apply the sign function.
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