Abstract: A sensor assembly for an electromechanical steering system of a motor vehicle may include a measuring device and a control device. The measuring device may include a torque sensor unit and an index sensor unit. The torque sensor unit may be connected to the control device by a power supply line to supply said unit with electrical energy. The sensor assembly is configured to transmit an index signal of the index sensor unit to the control device by modulating a signal that is transmittable via the power supply line.

Abstract: An angle sensor unit for measuring a rotational angle of a steering shaft may include a two-pole magnet that is disposed at one end of the steering shaft and has two poles that are opposite one another relative to a magnetic axis corresponding to a rotational axis of the steering shaft, two magnetic-field-direction-dependent magnetic field sensors assigned to the magnet and arranged with their sensitive sensor faces parallel to the external face of the magnet and at two different distances from the magnet and centers of the magnetic field sensors being located on the magnetic axis, and an evaluation unit configured to determine a rotational angle based on signals of the two magnetic field sensors and magnetic flux density, which is respectively present in a region of the two magnetic field sensors, of the magnetic field originating from the magnet.

Abstract: An angle sensor unit for measuring a rotational angle of a rotational position of a steering shaft of a motor vehicle may include a multipole magnetic ring that has a number of pole pairs and can be connected in a torque-proof manner to the steering shaft, at least two magnetic field sensors that are assigned to the multipole magnetic ring, and an evaluation unit that is configured to determine a rotational angle on the basis of the signals of the at least two magnetic field sensors. The at least two magnetic field sensors may be offset in a circumferential direction on an outside of the multipole magnetic ring such that a magnetic field that originates from the multipole magnetic ring, in a region of the two magnetic field sensors, has an approximate equal absolute value with opposite signs.

Abstract: A rotor position sensor for an electric motor of an electric power steering apparatus for assisting steering of a motor vehicle is configured to generate a sensor signal which represents the rotor position of the electric motor's rotor. The rotor position sensor has at least one sensor unit that generates electrical signals having different phases in accordance with rotation of a rotary shaft of the electric motor that is a sensing target, wherein the rotor position sensor includes two redundant sensor units wherein each of the sensor units includes tunnel magnetoresistive elements.