On 24/03/17 10:06, Felix Salfelder wrote:
On Fri, Mar 24, 2017 at 09:01:39AM +0000, Richard Crozier wrote:
The Qucs solvers can be used as a shared library, qucsator is actually
just a thin wrapper for this library now.
Dear Richard.
yes, gnucap comes as a shared library. see main/main.cc. it essentially
links to the library. running it will load plugins, then spawn a command
interpreter and not much else.
state space inspection is techniques that try to interfere with and
observe a circuit while it is running (pause/analyse/modify/continue),
as opposed to transient analysis where you try to interpret results
*after* you ran the simulation. (once upon a time) I have implemented an
interface plugin for gnucap, to drop-in replace an in-house simulator
(proprietary, closed source, no-verilog-a) in a verification workflow.
it uses sockets to communicate and it is part of gnucap-uf [2] (my
ancient fork). unlike many other plugins i have not ported this plugin
to mainline, and i wouldn't say it is particularly elegant. yet it might
serve as a proof of concept for what you might need.
Thanks, this second one sounds a lot more like what I would be
interested in. In my case, I want to do things like run a finite element
simulation of an electrical machine which provides the back emf, while
the circuit solver then does the power electronics simulation, but
perhaps also being supplied with a control signal from matlab. In other
cases I just want a loosely coupled electrical system simulation that
interacts with a larger system simulation (renewable energy systems in
my case).
This sockets scheme sounds similar to what another library I'm using
does (MBDyn, a multibody dynamics library). Is your gnucap-uf fork
buildable, and is there any discussion, documentation or even just code
comments explaining how it should be used?
Richard
--
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.
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