Patent · US Active

Multiturn rotary encoder and method of operating a multiturn rotary encoder

US8154427B2 · kind B2 · utility

5Cited by

3References

10Claims

0Family size

Assignee

DR. JOHANNES HEIDENHAIN GMBH · DE

Inventors

Elmar Mayer · Nußdorf, DE
Erich Strasser · Trostberg, DE
Hermann Hofbauer · Trostberg, DE

Key dates

Filing date	Aug 30, 2010
Grant date	Apr 10, 2012
Priority date	—
Expiry date	Dec 17, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG01D2205/26
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A multiturn rotary encoder includes: a single-turn unit, including a code carrier and a single-turn evaluation unit for processing single-turn position signals to form a single-turn code word; a first multiturn unit, including at least one first multiturn code carrier and a first multiturn evaluation unit for processing first multiturn position signals to form a first multiturn code word that indicates the number of revolutions covered by input shaft; and a second multiturn unit, including at least one second multiturn code carrier and a second multiturn evaluation unit for processing second multiturn position signals to form a second multiturn code word that likewise indicates the number of revolutions covered by the input shaft. The functioning of the multiturn units is ascertainable by the multiturn code words generated independently of each other.

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