Patent · US Expired

Arrangement with an electric motor

US6819069B2 · kind B2 · utility

8Cited by

45References

27Claims

0Family size

Assignee

ebm-papst St. Georgen GmbH & Co. KG · DE

Inventors

Jörg Hornberger · Dornstetten, DE
Frank Jeske · Tennenbronn, DE
Hansjörg Kaltenbrunner · Bräunlingen, DE
Arno Karwath · Rottweil, DE
Hermann Rappenecker · Vöhrenbach, DE
Thomas Dufner · Schonach, DE

Key dates

Filing date	Oct 3, 2002
Grant date	Nov 16, 2004
Priority date	—
Expiry date	Dec 4, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH02P6/34
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The rotation speed of an electric motor (9) is controlled by a controller (6) which receives its setpoint from a characteristic function (23). The characteristic function (23) calculates a setpoint for the controller (6) on the basis of an originally analog variable A (2) that is converted to digital by an A/D converter AD (10), with the aid of support values of a “MEM+DATA” characteristic that are stored in a memory (4); those values not predefined by the support values are calculated by interpolation.

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