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:
Feb. 03, 2009
Filed:
Dec. 13, 2006
Thomas Pfund, Leiberstung, DE;
Wai-wal Buchet, Strassburg, FR;
Sven-jostein Kro, Ottersweler, DE;
Martin Zimmermann, Sasbach, DE;
Juergen Gerhart, Appenweier, DE;
Martin Fuss, Wooster, OH (US);
Thomas Pfund, Leiberstung, DE;
Wai-Wal Buchet, Strassburg, FR;
Sven-Jostein Kro, Ottersweler, DE;
Martin Zimmermann, Sasbach, DE;
Juergen Gerhart, Appenweier, DE;
Martin Fuss, Wooster, OH (US);
LuK Lamellen und Kupplungsbau Beteiligungs KG, Buehl, DE;
Abstract
An actuator for a clutch or gear mechanism in a motor vehicle comprises an electric motor and an incremental encoder. The encoder comprises a position measurement signal output at which a position measurement signal can be output which has a number of different signal states, each of which is assigned to a relative position between a primary part and a secondary part of the electric motor. For the commutation of the electric motor, the position measurement signal output is connected to a position measurement signal input of a control device for a motor winding of the electric motor. The control device comprises a device for checking the plausibility of the position measurement signal and is designed in such a manner that on the occurrence of an implausible signal state the power supply to the electric motor is disconnected and/or the power of the electric motor is limited.