Patent · US Active

Method and apparatus for processing a motor signal, having current ripple, of a DC motor

US8725440B2 · kind B2 · utility

4Cited by

1References

21Claims

0Family size

Assignee

Brose Fahrzeugteile GmbH & Co. KG, Hallstadt · DE

Inventors

Jovan Knezevic · Munich, DE
Wolfgang Uebel · Weitramsdorf, DE
Thorsten Fuchs · Hallstadt, DE
Detlef Russ · Renningen, DE
Stefan Diestler · Unterleinleiter, DE

Key dates

Filing date	Aug 18, 2009
Grant date	May 13, 2014
Priority date	—
Expiry date	Feb 12, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH02P7/2913
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In order to process a motor signal (Ia, Um) of a DC motor (4), in particular of an adjustment drive of a motor vehicle, the armature current (Ia) and the motor voltage (Um) of the DC motor (4) are detected and used for determining the back-emf (E) of the DC motor (4), wherein the determined back-emf (E) is used to generate a useful signal (Sf, SEFL), which is in particular speed-proportional, from the armature current signal (Ia) for position sensing or for evaluating an excess force limitation.

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