Patent · US Active

Encoder using a magnetic sensing assembly and an optical sensing assembly and position detection method for a motor

US11002562B2 · kind B2 · utility

1Cited by

1References

12Claims

0Family size

Assignee

Delta Electronics, Inc. · TW

Inventors

Horng-Jou Wang · Taoyuan, TW
Jeng-Ping Lin · Taoyuan, TW

Key dates

Filing date	Apr 17, 2019
Grant date	May 11, 2021
Priority date	—
Expiry date	Oct 8, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG01D5/3473
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An encoder includes a magnet, an optical coded disc, a magnetic sensing assembly, an optical sensing assembly and a signal processing unit. The optical coded disc has a first incremental pattern track and a second incremental pattern track. The magnet and the optical coded disc are structurally coaxial and rotatable. The magnet sensing assembly senses the magnet rotation to obtain an absolute position signal. The optical sensing assembly senses the optical coded disc rotation to obtain a first incremental position signal and a second incremental position signal. The signal processing unit receives and integrates those signals to obtain a high precision absolute position information.

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