PI controller step input

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Nejc
Nejc 2013-11-27
回答： Sabin 2023-9-27
Hello colleges
I am doing simulation in Matlab Simulink and I cross on one problem. Before signal goes to PI controller I make a sum of measured value (which in my case is constant) and desire value (also constant). If I run simulation nothing happened. Than I put in my simulation STEP with innitial value (measeured value) and Final value(desire value). If I run simulation with this configurations PI controller is tracking my desire value from zero and not from my measured valued like I want.
What input signal can I set or any other solution would be great. Thank you very much for your response.

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回答（1 个）

Sabin
Sabin 2023-9-27
First of all it is not the sum of desired and measured values, it should be the difference, error = desired value - measured value. For an example check:
https://www.mathworks.com/help/simulink/slref/anti-windup-control-using-a-pid-controller.html

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