Patent · US Active

Gradient determination for measuring rotational speeds

US11397191B2 · kind B2 · utility

0Cited by

0References

4Claims

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Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Andreas Wendzel · Grünkraut, DE
Ralf Dreibholz · Meckenbeuren, DE

Key dates

Filing date	Nov 7, 2018
Grant date	Jul 26, 2022
Priority date	—
Expiry date	Jan 30, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG01P3/36
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An assembly has a rotating element, a sensor, and an evaluation unit; wherein the element has a number a of markings; wherein the markings pass through a region detected by the sensor in cycles when the element rotates; wherein the sensor is configured to send a signal to the evaluation unit; and wherein the evaluation unit is configured to assign a time ti for when each signal is sent, wherein the evaluation unit is configured to calculate a function m(t) over time t as a measure for a gradient of the rotational rate of the element.

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