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Re: How Tune PID in octave using Frequency Response data
From: |
shall689 |
Subject: |
Re: How Tune PID in octave using Frequency Response data |
Date: |
Fri, 24 Jul 2020 09:55:42 -0500 (CDT) |
Hello Doug,
I previously tried to covert the frequency response data to a transfer
function (see
https://octave.1599824.n4.nabble.com/Control-System-Design-methods-using-Octave-tc4685799.html)
You helped me on it
(https://octave.1599824.n4.nabble.com/Control-System-Design-methods-using-Octave-tc4685799.html#a4685818).
However, the resulting transfer function didn't exactly fit the original
response data (see attached csv file).
Do you think the resulting transfer function is good enough?
Some background: The frequency data was generated from a buck converter
simulation (using PSIM). I am now simulating an inverter which has a
capacitor current feedback (actually inverter current - output current is
fed back) I have no problem tuning a PID (using Zieglerâ€“Nichols method) for
an inverter current feedback inner current loop, but I am not able to tune a
PID that has a capacitor current inner loop. The issue has to do with what
magnitude to use for the step response.
buckVfreqResp.csv
<https://octave.1599824.n4.nabble.com/file/t372348/buckVfreqResp.csv>
Thanks,
Stephen
--
Sent from: https://octave.1599824.n4.nabble.com/Octave-General-f1599825.html
- How Tune PID in octave using Frequency Response data, shall689, 2020/07/24
- Re: How Tune PID in octave using Frequency Response data, Sergei Steshenko, 2020/07/24
- Re: How Tune PID in octave using Frequency Response data, Nicklas SB Karlsson, 2020/07/24
- Re: How Tune PID in octave using Frequency Response data, shall689, 2020/07/24
- Re: How Tune PID in octave using Frequency Response data, N, 2020/07/27
- Re: How Tune PID in octave using Frequency Response data, shall689, 2020/07/28
- Re: How Tune PID in octave using Frequency Response data, N, 2020/07/28
- Re: How Tune PID in octave using Frequency Response data, N, 2020/07/28
- Re: How Tune PID in octave using Frequency Response data, Torsten Lilge, 2020/07/28
- Re: How Tune PID in octave using Frequency Response data, N, 2020/07/28