Arrangement for the contactless inductive transmission of electric measurement values and/or electric energy between a rotor and a stator

US6084368A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Gunter Doemens · Holzkirchen, DE
• Markus Gilch · Moosburg an der Isar, DE

Key dates

• Filing date: Dec 9, 1998
• Grant date: Jul 4, 2000
• Expiry date: Dec 9, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G01P3/48
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The known arrangements have at least one rotor coil (RS) arranged on the rotor and at least one stator coil (SS) arranged on the stator. The rotor coil (RS) and the stator coil (SS) respectively have at least one winding (WI) and there is a magnetic coupling between the rotor coil (RS) and the stator coil (SS). With an arrangement of this sort, it is possible for example to transmit measurement signals of a measurement pickup (MA) arranged on the rotor (RO) for the contactless measurement of torques. The additional acquisition of the respective angular position and/or of the respective angular speed (.omega.) of the rotor RO is enabled, without additional outlay, in that the winding (WI) of the conductor that forms the rotor coil (RS) or the stator coil (SS) is structured locally, and preferably also periodically, over the entire extent of the winding (WI) by modifications of shape and/or material, in such a way that there results a fluctuation, which is periodic if warranted, of the magnetic coupling factor (KG). The respective angular position and/or the respective angular speed (.omega.) of the rotor (RO) can be derived from the resulting fluctuations of the amplitude (AM) of a …