Actuator for the actuation of a clutch and/or a gear mechanism

US7486490B2 · kind B2 · utility

Assignee

• LuK Lamellen und Kupplungsbau Beteiligungs KG · DE

Inventors

• Thomas Pfund · Leiberstung, DE
• Wai-Wal Buchet · Strasbourg, FR
• Sven-Jostein Kro · Ottersweier, DE
• Martin Zimmermann · Sasbach, DE
• Juergen Gerhart · Appenweier, DE
• Martin Fuss · Karlsruhe, DE

Key dates

• Filing date: Dec 13, 2006
• Grant date: Feb 3, 2009
• Expiry date: Aug 8, 2027

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2061/1208
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

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.