On Tue, 2007-09-18 at 16:50 -0600, John Doty wrote: > On Sep 18, 2007, at 3:59 PM, Peter Clifton wrote: > > > > > The model is to simulate EMF induced in a generator given arbitrary > > mechanical input. > > > > I'm defining the mechanical position input to be a voltage across two > > terminals (say 1m / V), which I will differentiate to get velocity > > (say > > 1m/s / V). (Or I could feed it both velocity and position, rather than > > worrying about how to differentiate within my model). > > ... > > If you have Mathematica, you might want to try the Mathematica > gnetlist back end in the latest release. You can do *symbolic* > circuit analysis with it, or move to the numerical domain. The models > in the package on my site are for linear circuit analysis in the > complex frequency domain, but you can substitute nonlinear model > equations (including differential equations) if you wish. For linear > circuits, numerical transient analysis is extremely fast: it uses FFT > techniques rather than numerical integration.
I've never used Mathematica, and don't know if the Engineering department has any licenses. It looks interesting, so I'll investigate more when I get some free time. Woo... my "server" box just booted again for the first time in months.. faults were: bad memory stick, clogged CPU heatsink -> overheating, and a corrupt glibc (thanks to me trying to "fix" it). ;) Thanks for the pointer. Peter _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
