How can i fit complex data to a model of a RLC circuit?

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André Steibel 2020 年 4 月 29 日

回答済み: Lorenzo 2023 年 1 月 28 日

I'm trying to fit x data for frequency and y data for impedance (complex values) and I have done a model of a RLC circuit with the equation

and i have to find the parameters (vector p) that best fit this equation to the data I have.

I have already used funcions like vpasolve, fminsearch, particleswarm, fitnlm and simulannealbnd but all of them were without succes.

darova 2020 年 4 月 29 日

Did you try fit?

Alex Sha 2020 年 4 月 30 日

Hi, Andre, post out your data please.

Lorenzo 2023 年 1 月 28 日

Hello André,

If I understand it correctly you want to find the parameters p, so that your model answer is similar to a measured data?

If that is the case, it sounds like a use-case for Simulink Design Optimization. Here you find an example for a parameter estimation of a DC-motor.

Best,

Lorenzo

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