How to set multiple ports for a step input block

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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

Accepted Answer

Jarrod Rivituso
Jarrod Rivituso on 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 Comments
Jarrod Rivituso
Jarrod Rivituso on 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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