Electromagnetic suspension (EMS) is widely used in conveyor systems because of the various advantages in practical use. U-type magnets are often used to generate the levitation force in the EMS system. A conventional electromagnet, however, can only control one degree of freedom. It cannot constitute a levitation system by itself alone.
A four-pole yoke hybrid electromagnet is proposed instead of the usual U-type magnet; its magnetic levitation control is a zero power control method. We propose an X-Y linear synchronous motor (X-Y LSM) composed of an iron core and two windings in the horizontal x and y directions.
