The invention relates to an arrangement (20) for determining the angular position of a shaft (11) of an electric motor (10), in particular of a shaft (11) of a windscreen wiper motor (100), with a magnet element arrangement, connected with the shaft (11), and several magnetic field sensors (26, 27, 28), wherein the angular position of the shaft (11) is inferred from the different signals of the magnetic field sensors (26, 27, 28). Provision is made, according to the invention, for the magnet element arrangement to comprise at least one magnet element, preferably several separate magnet elements (21, 22, 23), which are arranged one behind the other in the longitudinal direction of the shaft (11), and for the magnetic field sensors (26, 27, 28) to be arranged on a printed circuit board (30) which is arranged at a slight distance from the shaft (11), such that the magnetic fields of the magnet elements (21, 22, 23) are able to be determined by the magnetic field sensors (26, 27, 28).
Arrangement for determining the angular position of a shaft of an electric motor, and windscreen wiper motor with an arrangement for determining the angular position
2018-03-06
Patent
Electronic Resource
English
IPC: | H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein |
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