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MaximeVH / EquivalentCircuits.jl

A julia package to either fit the parameters of a specified equivalent electrical circuit to electrochemical impedance data, or to suggest a plausible circuit configuration for a given set of measurements (either through a comparison of circuits from the literature, or through an evolutionary algorithm approach).
MIT License
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Proposal: Optional input parameter Low-Frequency resistance #22

Closed StefanPofahl closed 1 year ago

StefanPofahl commented 1 year ago

Hi Maxime,

what about adding a punishment in the quality function for the difference between the measured low-frequency resistance and and the current result for the sum of the resistances? Let's assume you have: R1-L2-[R3,P4]-[R5,P6]

then the low frequency resistance should equal to the sum: R_low_frequency = R1+R3+R5

The low frequency should be similar to the resistance that can be calculated according to the slope of the polarization curve.

And for this optional element in the quality function there should be also included a weighting factor.

What do you think?

Regards,

Stefan

MaximeVH commented 1 year ago

Hi Stefan,

This idea is useful and makes sense for the category of circuits to which your example belongs. However, not all circuit configurations will have this property. As I'd like to keep the functions in this package as general as possible (and not specific to a single subcategory), I think this would be more useful as a separate script with a redefinition of the objective function rather than a modification to the package as a whole.

Regards,

Maxime

StefanPofahl commented 1 year ago

Hi Maxime,

yes an example would be nice. :-)

Regards,

Stefan

P.S.: Also in other packages you have predefined standard equivalent circuits, but I agree, that a generic approach is often the best choice :-)

StefanPofahl commented 1 year ago

Cool :-)