Patent · US Expired

Synchronous linear motor with non-contacting scanning of the toothed structure of the secondary part

US7679226B2 · kind B2 · utility

5Cited by

9References

5Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Zeljko Jajtic · Birkenfeld, DE
Markus Knorr · Augsburg, DE
Johannes Wollenberg · Gräfelfing, DE

Key dates

Filing date	Apr 12, 2006
Grant date	Mar 16, 2010
Priority date	—
Expiry date	May 29, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH02K11/00
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The aim of the invention is the equipping of a synchronous linear motor with a non-permanently-magnetic secondary part with a simple positional measuring system. Said aim is achieved, whereby the tooth structure of the toothed rack-shaped non-permanently-magnetic secondary part (S) varies with position in the direction of movement (B). Furthermore, the synchronous linear motor can be provided with absolute and incremental positional measuring systems, such that the coarse resolution of the absolute measuring system can be supplemented by the fine resolution of the incremental system.

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