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# Re: Modeling a loudspeaker motor

- To: femm@yahoogroups.com
- Subject: Re: Modeling a loudspeaker motor
- From: "dartagnan1212" <billfagal@compuserve.com>
- Date: Thu, 15 May 2003 19:01:30 -0000
- In-reply-to: <3EC3DB70.1090509@ieee.org>
- User-agent: eGroups-EW/0.82

    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@i...
    > www: http://femm.berlios.de/dmeeker

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- References:
  - Re: [femm] Modeling a loudspeaker motor
    - From: David Meeker <dmeeker@ieee.org>

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