Encoder system for a drive

US11994415B2 · kind B2 · utility

Assignee

• WITTENSTEIN SE · DE

Inventors

• Tobias Gromes · Laudenbach, DE
• Ralf Kruse · Coburg, DE
• Ingolf Gröning · Lohr am Main, DE

Key dates

• Filing date: Jul 9, 2021
• Grant date: May 28, 2024
• Expiry date: Feb 28, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K2211/03
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Encoder system (1) for a drive, including a revolution counter having a Wiegand sensor (23) which is disposed on a stationary part (13) of the encoder system (1), and at least two pairs of magnets which in the revolving direction (5) are disposed at different positions on a rotatable part (15) of the encoder system (1), wherein the pairs of magnets comprise in each case a first magnet (35) and a second magnet (37); and a position encoder having a magnetic field sensor (43) which is disposed on the stationary part (13), and a magnetic strip (47) which is disposed on the rotatable part (15); wherein, in each pair of magnets, the first magnet (35), the magnetic strip (47) of the position encoder, and the second magnet (37) in terms of a first direction are disposed in this sequence on the rotatable part (15).