Patent · US Expired

Method for determining a rotational angle or a distance by evaluating phase measured values

US6816108B2 · kind B2 · utility

4Cited by

8References

2Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Siegbert Steinlechner · Leonberg, DE
Axel Wenzler · Rottweil, DE

Key dates

Filing date	Jun 26, 2003
Grant date	Nov 9, 2004
Priority date	—
Expiry date	Jun 26, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG01S17/36
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention proposes a method for determining a rotation angle or distance by evaluating a multitude of phase measurement values. By means of a linear transformation A, the phase values measured in an N-dimensional space are projected into N-1 new signals Si. These signals Si are transformed by a quantizing device into corresponding integer values Wi and converted into N real values Zi by means of a linear projection C. These values have weighted phase measurement values &agr;i added to them in modulo 2&pgr; fashion, which yields N estimates for the angle &phgr; to be measured. The N estimates are corrected if needed at their skip points and are added up in a weighted fashion, taking into account their phase angle.

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