gEDA-user: Mathematical expressions in gnucap?

[Peter Clifton <pcjc2@xxxxxxxxx>]

Hi,

I'm trying to use gnucap for simulating a machine - and am attempting to
produce an electrically analogous sub-circuit circuit model to simulate
the behaviour of a generator.

I can get position and velocity (position is input from a sinusoidal
source), and this is differentiated with a capacitor, and sensed with a
CCVS.

What I'm a little stuck on - is how I can use my arbitrary positions and
velocities (which exist as terminal voltages) to feed an equation which
determines the induced EMF on the generator coils.

There needs to be a sin( position ) term as part of this.

I believe ng-spice allows you to define functions, but couldn't "place"
similar functionality in gnucap..

Do I need to write my own model in C++?

Regards,

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)



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