Patent ID: 11967871
Assignee: UNIVERSITY OF UTAH RESEARCH FOUNDATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  A | IPC A  H

Claim 0:
1. An electromagnetic actuator for non-continuous rotation, comprising:
a support structure;
an output shaft rotatable about and defining an axis of rotation;
a permanent magnet rotor comprising at least two magnetic poles attached to the output shaft; and
a stator device comprising a ferromagnetic pole body attached to the support structure and surrounding the at least two magnetic poles, the ferromagnetic pole body having at least four ferromagnetic stator poles each wrapped in a conductive wire to define a stator coil,
wherein the at least four ferromagnetic stator poles are sized, and spaced radially from each other so as to define a maximum cogging torque of the electromagnetic actuator, wherein a total torque of the electromagnetic actuator is within a same order of magnitude as the maximum cogging torque, wherein the same order of magnitude is less than ten times.