Patent ID: 11859667
Assignee: INGERSOLL-RAND INDUSTRIAL U.S., INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  G  H | IPC F  G  H

Claim 14:
15. A rotating device having a sensor for positioning a rotatable shaft, the rotating device comprising:
a plurality of E-shaped ferromagnetic cores arranged to define a circular opening therethrough to receive a shaft, each E-shaped ferromagnetic core having at least a middle tooth, a first side tooth, and a second side tooth, the second side tooth of each E-shaped ferromagnetic core at least partially overlapping the first side tooth of an adjacent E-shaped ferromagnetic core of the arranged plurality of E-shaped ferromagnetic cores and thereby defining a set of overlapping side teeth;
a frame surrounding the plurality of E-shaped ferromagnetic cores, the E-shaped ferromagnetic cores coupled to the frame, the frame and the coupled E-shaped ferromagnetic cores defining a stator;
a first plurality of electromagnetic coils, each electromagnetic coil positioned around each respective set of overlapping side teeth;
a second plurality of electromagnetic coils, each electromagnetic coil positioned around a respective middle tooth;
a shaft positioned within the circular opening of the plurality of E-shaped ferromagnetic cores, the shaft configured as a rotor such that the shaft is permitted to rotate within the circular opening along a longitudinal axis passing through the circular opening; and
a control circuit coupled to the electromagnetic coils of the first and second pluralities of electromagnetic coils, the control circuit configured to receive position signals from the electromagnetic coils and control power supplied to the electromagnetic coils of the first plurality to cause rotation of the shaft based on the received position signals.