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Date: Mon, 25 Mar 2019 19:28:36 +0100
From: mhx AT iae DOT nl
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] Netlist --> Linear state space model
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On 2019-03-25 17:06, mhx AT iae DOT nl wrote:
> On 2019-03-25 15:44, Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com)
> [via geda-user AT delorie DOT com] wrote:
>> I think this is the most appropriate forum to ask. Do anybody know
>> about a tool to Convert a netlist to a linear state space model?
[..]
> The other route is to go from a net-list to MNA form (Ruehli and all), 
> and
> then use the technique in (can't find the paper now, send me an e-mail) 
> to
> go from MNA to A,B,C,D / state-space form. The paper cuts some corners
> when the sources are higher-order non-differentiable, but that isn't
> very common in practice (I don't believe yet the paper is correct, but
> they got it published :-)

Y. Tanji and H. Kamei, "Behavioral modeling of class E amplifiers based 
on
modified nodal analysis formulation," 2013 IEEE 10th International 
Conference
  on Power Electronics and Drive Systems (PEDS), Kitakyushu, 2013, pp. 
6-11.
doi: 10.1109/PEDS.2013.6526979
keywords: {amplifiers;MOSFET;behavioral modeling;class E 
amplifiers;modified
nodal analysis formulation;MNA formulation;circuit 
simulators;SPICE;MOSFET;
dynamical system;off states;on states;predictor system;control theory},
URL: 
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6526979&isnumber=6526975

John approach (method 2) is probably a lot easier.

-marcel