🚀 go-pugleaf

I don't understand multiple rotor coils but ususally a resolver has two
stators at right angles and a single rotor.  The stators are driven in
quadrature, two sinusoids with a 90 degree phase difference, and the
rotor then delivers a (near) constant manitude sinusoid with a phase
angle that varies linearly with shaft angle.  These are most commonly
used on the end of the ball screws that drive the linear axes of machine
tools.  The shaft angle translates directly to linear position.  There
is a hybrid integrated circuit that takes the quadrature inputs and the
rotor output and delivers a 16 bit (maybe better by now) encoding of
the angle.  Now I remember what the multiple coils are for, with a proper
connection, you can get more than 360 degress shift per revolution of the
shaft and thus increase the resolution of the resolver.  (As in the 
department of redundncy department.)
-- 
Bob Cain    rcain@netcom.com   408-358-2007

"There are some strings.  They're just not attached."
                                                    Victoria Roberts