PID Autotuner does not work?

Question

Rejept Ivedic 2023-9-16

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2021992-pid-autotuner-does-not-work

回答： Arkadiy Turevskiy 2024-1-12

microgridmode.slx

Hi,

For my desing, attache here, I am trying to controll the output value via PI regulator. It seems it is not so easy to find the coefficients for the controller, so I need to auto tune these parameters, unfortunattely when I pres the Tune button nothing happens?

Any suggestions why?

Thanks!

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Rejept Ivedic 2023-9-16

I realized I need System Control Tolbox. Someone with this tool installed wants to help here?

Thanks!

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Answer 1

Arkadiy Turevskiy 2024-1-12

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https://ww2.mathworks.cn/matlabcentral/answers/2021992-pid-autotuner-does-not-work#answer_1388691

When I try to tune PID controller in your model I get an error that linearization failed because RMS measurement block, i..e, this block coulc not be linearized analytically.

As the exact linearization of the model does not work, you can try one of the alterantive approaches.

https://www.mathworks.com/help/slcontrol/ug/design-controller-for-power-electronics-model-using-simulated-io-data.html

https://www.mathworks.com/help/slcontrol/ug/design-pid-controller-using-plant-frequency-response-near-bandwidth.html

HTH