I'm working on a power systems where I have 2 linearized transfer functions. The first transfer function corresponds to the no-load case and the second transfer function corresponds to the full-load case.

I was wondering if there are metrics to compare 2 transfer functions, for example how similar are their respective poles and zeroes.

I can play on some factors, like inductance and switching frequency and I get the feeling that increasing the inductance value too much makes the 2 transfer functions more dissimilar.



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