The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 22, 2011
Filed:
Feb. 21, 2007
Roland Finkler, Erlangen, DE;
Zeljko Jajtic, München, DE;
Markus Knorr, Augsburg, DE;
Siemens Aktiengesellschaft, München, DE;
Abstract
The aim of the invention is to create an inexpensive sensor system for a movable electric machine in order to determine positions, the sensor signal featuring zero crossings. Said aim is achieved by a sensor device () comprising a U-shaped yoke () and a sensor () which is disposed in/on the yoke () to detect a magnetic variable, for example. Magnets (to) that are or can be inversely magnetized are arranged at a free end of the yoke (). Opposite magnetic fluxes that can be detected by the sensor () can be generated in the yoke () in accordance with the position of the magnets (to) relative to one of the pole teeth () of a machine component. Approximately sinusoidal sensor signals can be generated therefrom without having to use several measuring sensors, e.g. in order to regulate a linear motor.