High Cogging Torque Stepping Motor
Original Publication Date: 1983-Jan-01
Included in the Prior Art Database: 2005-Feb-06
There are many applications where energy conservation is very important, as in portable devices. The device described in this article has this property and consists of a four-pole stator 10 and a three-pole rotor 12 with a permanent magnet ring 14 acting as the main flux source and a spacer, between the South and North sides 12S and 12N, respectively, of the rotor 12. The North and South poles of the rotor are displaced 60 degrees from each other, as shown in Fig. 1.