Patent · US Expired

Method and device for determining a rotation angle or a displacement

US6820030B2 · kind B2 · utility

3Cited by

6References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Siegbert Steinlechner · Leonberg, DE
Axel Wenzler · Rottweil, DE
Klaus Marx · Stuttgart, DE

Key dates

Filing date	May 19, 2003
Grant date	Nov 16, 2004
Priority date	—
Expiry date	May 19, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG01D5/2451
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for determining a rotation angle or a path, with the following steps:measurement of at least two phase values &agr;1, &agr;2 through the scanning of sensors that are associated with the respective phase values and have different periodicities,calculation of a working value k, which can be represented as a whole number, on the basis of the measured phase values &agr;1 and the periodicities ni associated with them,calculation of at least two scaled estimates &phgr;s1/2&pgr; on the basis of the phase values &agr;i, the periodicities ni, the working value k, and integral working factors ki that set the periodicities ni in relation to one another in a scaling relation, andweighted summation of the scaled estimates &phgr;s1/2&pgr; in order to obtain a determined estimate &PHgr;meas/2&pgr;.

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