Patent · US Active

Method and system for calibrating and detecting offset of rotary encoder relative to rotor of motor

US9641108B2 · kind B2 · utility

2Cited by

0References

17Claims

0Family size

Assignee

Eaton Corporation · US

Inventors

Bharath Suda · Munich, DE
James David · Portage, US

Key dates

Filing date	Dec 23, 2014
Grant date	May 2, 2017
Priority date	—
Expiry date	Feb 28, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG01R23/00
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Methods and systems for operating a motor having a rotor rotatable relative to a stator include commutating the motor to cause the rotor to rotate to a known position. While the rotor is at the known position, a position of an encoder magnet configured to rotate with the rotor is measured. Subsequent commutation of the motor is adjusted to take into account a difference between the known position of the rotor and the measured position of the encoder magnet.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.