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 0:
1. A position sensor for positioning a shaft of an electrical motor, the position sensor 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 first plurality of electromagnetic coils, each electromagnetic coil positioned around a respective set of overlapping side teeth;
a second plurality of electromagnetic coils, each electromagnetic coil positioned around a respective middle tooth; and
a control circuit coupled to the electromagnetic coils of the first plurality of electromagnetic coils and the second plurality 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 of electromagnetic coils to cause rotation of the shaft based on the received position signals.