This script moves a the coil in a fairly typical speaker geometry
through a prescribed stroke in a prescribed number of increments.
At each point, the force on the coil and BL are calculated.

The program starts out by loading spkr.fem, which is a .fem file
of the speaker with the coil positioned at the bottom of its stroke.
The nodes at the corners of the coil and the block label in the middle
of the coil are defined to be in group 1 so that it is easy to select
and move the coil in a small number of operations.

To start the script, selece "Open Lua Script" off of the file menu of
the preprocessor.  Select the spkr.lua file and hit OK.  The results
will be collected in a filed called "results.txt"

David Meeker
dmeeker@ieee.org
September 5, 2002
