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frequency relay function for Zeigler nichols 2?

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Myumyun
Myumyun on 28 Apr 2013
Hi,
I have to write matlab code/function for Zeigler Nichols 2(Closed Loop).
I wrote the code for solve of pid parameters, but I have problems in simulation of Closed Loop.
I understand that I need of relay, but as function or command I could not found.
----r-->+---e-|relay|--|PID|--u-|PLANT|-----------y->
^- |
|__________________________________|

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Answers (3)

Azzi Abdelmalek
Azzi Abdelmalek on 28 Apr 2013
Maybe you mean a delay block

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Myumyun
Myumyun on 28 Apr 2013
Edited: Myumyun on 28 Apr 2013

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Myumyun
Myumyun on 29 Apr 2013
If there isn't function/command for this,
Pls you give me some information on how I can write code.

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