Re: Modeling a loudspeaker motor

["dartagnan1212" <billfagal@xxxxxxxxxxxxxx>]

Dave,

Thanks for writing such a cool product!

Yes, that Lua script example seems to do exactly what I want. 
Unfortunately, I'm still unfamilliar with how to use the Lorentz 
force integral and apply it to a model I draw. I'm also wondering 
how to create the voice coil winding and specify the fill/turns/etc.

I learned a bunch from the step-by-step examples you have on your 
website. I know it's alot to ask, but is there a chance you could 
create a step-by-step of a voice coil motor force/position problem, 
perhaps dovetailed with the script you've already written? I bet it 
would be a popular reference for newbies like me who have interest in 
modeling loudspeaker motors.

Thanks again for a great program and all you do to support it!

Bill


> Yes, this is just the sort of thing that femm is designed to do. 
You 
> could either model your motor and manually move and evaluate the 
force 
> at each position via the "Lorentz Force" integral. Or, you could 
use a 
> short script to automatically evaluate a range of position. See 
> http://groups.yahoo.com/group/femm/message/1379 for a scripting 
example 
> that does what you are after.
> 
> Dave.
> -- 
> David Meeker
> email: dmeeker@xxxx
> www: http://femm.berlios.de/dmeeker