PID Tune: Plant cannot be linearized

Question

Arash 2022-11-6

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1844578-pid-tune-plant-cannot-be-linearized

回答： Sam Chak 2022-11-6

I am designing a grid connected PV system with battery and supercapacitor. In that model I am using three PID controllers inorder to control I battery and supercapacitor, but when I wan to tune these PID controlers it gives an error (PID Tune: Plant cannot be linearized).

Could you suggest any methods to tune these controllers?

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Answer 1

Sam Chak 2022-11-6

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1844578-pid-tune-plant-cannot-be-linearized#answer_1092408

Hi @Arash

Most likely your PV system has components that contain discontinuities. Thus, the Plant cannot be linearized.

However, you can identify/estimate the system model from the input–output data and then use that model for PID tuning purposes. Perhaps, learing from this tutorial is more effective.

PID Controller Tuning for a Model with Discontinuities

https://www.youtube.com/watch?v=TlaION68WAg