Field strength position sensor with improved bearing tolerance i

Details Field strength position sensor with improved bearing tolerance i Field strength position sensor with improved bearing tolerance i

1996-06-07

1998-01-27

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Displacement

32420722, 32420725, G01B 730

Patent

active

057125619

ABSTRACT:
A position sensor has a shaped dual magnet structure carried upon a pole piece having a generally "c" shaped cross-section. The magnet and pole piece define a generally circular linear field which is concentric about the axis of rotation of the complete rotor. A Hall effect device is inserted into the open portion or gap between the two magnets and is exposed to a well defined field. Through the use of selected geometries and particular magnet materials, a precise, compact and yet tolerant magnetic circuit is produced.

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