Patent · US Active

Assembly for detecting more than one rotation through a position encoder magnet

US8847584B2 · kind B2 · utility

7Cited by

4References

16Claims

0Family size

Assignee

ASM Automation Sensorik Messtechnik GmbH · DE

Inventors

Klaus Manfred Steinich · Straubing, DE
Peter Wirth · Winsen, DE

Key dates

Filing date	Aug 11, 2010
Grant date	Sep 30, 2014
Priority date	—
Expiry date	Dec 25, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG01D2205/28
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The rotational position of an encoder magnet can be scanned over more than 360° by respective sensor elements in that magnets are disposed on different stages of a suitable transmission, in particular of a differential transmission, and the magnets are scanned by separate sensor elements, whose signals are computed with one another and yield a total number of revolutions.In particular, when an assembly of this type shall be built very small, undesirable magnetic interferences for the sensor elements have to be avoided through flux conductor elements since the interferences distort the measurement results. Thus, a differentiation is made between active and passive flux conductor elements.

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