Patent ID: 9400166
Filing Date: 2016-07-26
CPC Classification: G01B,G01L,G01R

Claim Text:
1. A sensor arrangement for determining a relative rotation of first and second shafts ( 4 , 6 , 42 , 44 ) that are arranged coaxially with respect to one another about a common axis, said sensor arrangement comprising a first plurality of magnetic elements ( 29 , 48 ) that are arranged on the first shaft ( 4 , 42 ), a second plurality of magnetic elements ( 29 , 50 ) that are arranged on the second shaft ( 6 , 44 ) and also a plurality of magnetic field-sensitive measuring elements ( 20 , 56 ) that are arranged in a spatially fixed manner between the first and the second pluralities of magnetic elements ( 29 , 48 , 50 ) of the first and second shafts ( 4 , 6 , 42 , 44 ) and detect a magnetic field that occurs as a result of a superposition of the magnetic fields ( 32 ) of the first and the second pluralities of magnetic elements ( 29 , 48 , 50 ) of the first and second shafts ( 4 , 6 , 42 , 44 ), wherein the plurality of magnetic field-sensitive measuring elements ( 20 , 56 ) are arranged around the common axis at identical angular spacings with respect to one another, and wherein a periodicity of the plurality of magnetic field-sensitive measuring elements ( 20 , 56 ) differs from a periodicity of the first and the second pluralities of magnetic elements ( 29 , 48 , 50 ) of the first and second shafts ( 4 , 6 , 42 , 44 ).