PID Autotuner does not work?

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!

[Rejept Ivedic]

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

Thanks!

Answer 1

[Arkadiy Turevskiy]

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