Sensor arrangement
AssigneeRobert Bosch GmbH
InventorRonny Ludwig
Life of this patent
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Abstract
The invention relates to a sensor arrangement (2) for determining a relative rotation of two shafts that are arranged coaxially to one another (4, 6), which sensor arrangement comprises at least one magnetic element (29) arranged on a first shaft (4), at least one magnetic element (29) arranged on a second shaft (6) and at least one magnetic field-sensitive sensing element (20), which is arranged in a stationary manner between the magnetic elements (29) of the two shafts (4, 6) and which captures a magnetic field that results from the superposition of the magnetic fields (32) of the magnetic elements (29) of both shafts (4, 6).
Claims14
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, said sensor arrangement comprising at least one magnetic element (29, 48) that is arranged on the first shaft (4, 42), at least one magnetic element (29, 50) that is arranged on the second shaft (6, 44) and also at least one magnetic field-sensitive measuring element (20, 56) that is arranged in a spatially fixed manner between the magnetic elements (29, 48, 50) of the first and second shafts (4, 6, 42, 44) and detects a magnetic field that occurs as a result of a superposition of the magnetic fields (32) of the magnetic elements (29, 48, 50) of the first and second shafts (4, 6, 42, 44).
A method for determining a relative rotation of first and second shafts (4, 6, 42, 44) that are arranged coaxially with respect to one another having a sensor arrangement (2, 40) that comprises at least one magnetic element (29, 48) that is arranged on the first shaft (4, 42), at least one magnetic element (29, 50) that is arranged on the second shaft (6, 44), and also at least one magnetic field-sensitive measuring element (20, 56) that is arranged spatially fixed between the magnetic elements (29, 48, 50) of the first and second shafts (4, 6, 42, 44), wherein a magnetic field that results from a superposition of the magnetic fields (32) of the magnetic elements (29, 48, 50) of the first and second shafts (4, 6, 42, 44) is detected by the at least one magnetic field-sensitive measuring element (20, 56).
Dependencies are inferred from the claim text.