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How to set multiple ports for a step input block

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Teo Samuel
Teo Samuel le 8 Mar 2012
Hi all,
Is it possible to set multiple ports for a step input block? I am tying to run two models with PID controller in simulink and I need two different step signals to be used as the set input for both models.
It is troublesome by using two step signal blocks as I need to set the final value of the signals seperately. So how can I set the final value of the two signal in one identical parameter setting GUI? Is it possible?
Please advice. Thank you very much.
Regards

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Jarrod Rivituso
Jarrod Rivituso le 9 Mar 2012
I believe you can use a single Step block, and then for the various parameters (such as the Final Value parameter) you can set a vector, such as
[-1 1]
This will cause the Step block to output a vector signal, and you can demux the signal to get each element (or use the Selector block).
  2 commentaires
Teo Samuel
Teo Samuel le 9 Mar 2012
Great answer, thank you so much...By the way, do you know is there any way to reset the value in the step signal block if a certain condition is met in the simulink? Thank you very much.
Regards
Jarrod Rivituso
Jarrod Rivituso le 12 Mar 2012
Hi Teo,
I would use the Relational Operator block and perform the logic myself, if I was doing something like that.
Hope this helps!
-Jarrod

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