Patent · US Active

Optimized determination of the after-run voltage in DC motors

US7729599B2 · kind B2 · utility

1Cited by

2References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Christoph Emde · Frebershausen, DE
Wolfgang Peveling · Backnang, DE
Gotthilf Koerner · Rutesheim, DE
Andreas Schmidtlein · Tamm, DE
Volker Weeber · Kaufbeuren, DE
Achim Noller · Kornwestheim, DE
Heiko Bock · Kreiensen, DE
Dirk Niemeyer · Reutlingen, DE

Key dates

Filing date	Jan 25, 2006
Grant date	Jun 1, 2010
Priority date	—
Expiry date	Mar 17, 2027

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60T8/4059
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A device and a method are provided for determining the after-run voltage of a direct current motor which is operated via cycled control. In normal operation the direct current motor is controlled via PWM control and a first specifiable pulse/no-pulse ratio. An evaluation unit is provided for determining an after-run voltage variable which is representative of the after-run voltage of the motor. Furthermore, for determining the after-run voltage variable the direct current motor is controlled via a specifiable, variable second pulse/no-pulse ratio.

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