Electromagnetic actuator
modeling and design
Brushless DC motor with concentrated, fractional slot winding.  16 poles rotor
and 18 slots/teeth stator.
Brushless DC motor with concentrated, fractional slot winding.  16 poles rotor
and 18 slots/teeth stator.  Discrete Halbach magnet array in rotor.
Short stroke linear actuator.  Discrete Halbach array without back iron.