kipper@walt.cc.utexas.edu (Kip Ingram) (12/14/89)
Hi. I'm interested in finding out as much as I can about hysteresis motors.
I've exhausted my local library books, and am now looking for papers. If
anyone out there has any knowledge of these devices, please speak out. I'm
particularly interested in two points:
1. Large hysteresis motors. The biggest one I've seen reference to is
in the 30-40 hp range.
2. "Speed flutter". Veinott and Martin indicate that these motors may
produce a "flutter", which they define as a variation in speed during
rotation. It's important that I learn if this can be avoided, and if
so how.
Thanks for any help you can give! Sorry, I have no signature yet.mmm@cup.portal.com (Mark Robert Thorson) (12/16/89)
With regard to "speed flutter", is that the same thing as "cogging" or "detent"? On motors for disk drives, it is important that the motor speed remain constant, because that effects the recording density. So one critical parameter when selecting a disk drive motor is the variation in speed as the rotor passes over the poles.