Patent ID: 8490499

Claim:
A sensor system for ascertaining a torque between an input shaft and an output shaft connected to each other by a torsion bar, the sensor system comprising: a magnetic unit having a magnetic pole wheel configured to generate a magnetic field, the magnetic unit being rigidly connected to one of the input shaft or the output shaft; a flux ring unit having a flux ring system configured to convert and conduct a magnetic flux generated by the magnetic unit, the flux ring unit being rigidly connected to the other of the input shaft or the output shaft; and a sensor unit having at least one first magnetic field-sensitive sensor element configured to detect changes in the magnetic flux through the flux ring system, the sensor unit being mounted in a stationary manner relative to the flux ring unit, the sensor unit having at least one further magnetic field-sensitive sensor element, wherein the first magnetic field-sensitive sensor element and the further magnetic field-sensitive sensor element are situated apart on a circumference in the area of the flux ring system; at least one index magnet mounted on the flux ring unit in the area of the magnetic field generated by the magnetic unit; and an evaluation unit configured to evaluate sensor signals of the first and the further magnetic field-sensitive sensor elements.