US 11,994,415 B2
Encoder system for a drive
Tobias Gromes, Laudenbach (DE); Ralf Kruse, Würzburg (DE); and Ingolf Gröning, Bad Mergentheim (DE)
Assigned to WITTENSTEIN SE, Igersheim (DE)
Filed by WITTENSTEIN SE, Igersheim (DE)
Filed on Jul. 9, 2021, as Appl. No. 17/371,181.
Claims priority of application No. 10 2020 118 174.4 (DE), filed on Jul. 9, 2020.
Prior Publication US 2022/0011140 A1, Jan. 13, 2022
Int. Cl. G01D 5/249 (2006.01); G01D 5/14 (2006.01); G01D 5/16 (2006.01); H02K 7/00 (2006.01); H02K 11/215 (2016.01)
CPC G01D 5/2497 (2013.01) [G01D 5/145 (2013.01); G01D 5/16 (2013.01); H02K 7/003 (2013.01); H02K 11/215 (2016.01); H02K 2211/03 (2013.01)] 15 Claims
OG exemplary drawing
 
1. Encoder system (1) for a drive, comprising:
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), wherein the first magnet and the second magnet are disposed at least substantially at the same position in the revolving direction; 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).