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:
Jul. 03, 2012
Filed:
Sep. 22, 2009
Holger Wuerstlein, Zeil am Main, DE;
Wolf-christian Mueller, Coburg, DE;
Wolfgang Uebel, Weitramsdorf, DE;
Holger Wuerstlein, Zeil am Main, DE;
Wolf-Christian Mueller, Coburg, DE;
Wolfgang Uebel, Weitramsdorf, DE;
Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Hallstadt, Hallstadt, DE;
Abstract
a method and a device for detecting the rotation of a brush-operated d.c. motor comprising a number of winding branches which are electrically connected between brushes, during the operation of the motor, by means of plates, according to the rotational angle. According to the invention, an alternating voltage signal is modulated on the basis of a supply direct voltage for the brushes, by which means the course of the complex resistance of the direct current motor is determined and used for the detection of rotation. In this way, the invention enables a cost-effective rotation detection that can be used in motor vehicle technology without requiring additional mechanical components.