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Do I convert the units?

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Daniel Moulin
Daniel Moulin 2015-2-4
关闭： MATLAB Answer Bot 2021-8-20
Hi all, I have rather simple question, but I'm not sure about the answer. If I simulate plant with a PID controller in simulink and variables have certain units (let say units are meters and seconds), do I have to convert those units if I'm working on a physical plant, that has different units (milimeters and minutes). Do the parameters of PID change?
Thanks in advance.

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回答（1 个）

Rick Rosson
Rick Rosson 2015-2-4
编辑：Rick Rosson 2015-2-4
Yes.
I think Kp will remain unchanged, but Ki and Kd will both need to scale to account for the change in the time units.

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