Abstract
This paper describes the electromagnetic vibration in magnetic gears. The sources of the electromagnetic vibration are shown, and the components of the vibration are theoretically described. The electromagnetic force that can be detected from cogging torque measurements is verified by employing 3-D finite element method analysis and carrying out measurements on a prototype, and the components that do not appear in the cogging torque measurements are calculated by employing coupled electromagnetic and structural analysis. Finally, these results are also verified through measurements of the sound pressure.
