Schaeffler Technologies Ag & Co .kg

Thomas Lindenmayr

Bernd Wittmann

Stephan Neuschaefer-Rube

Linbo Tang

Jianwu Zhou

A current sensor comprises a magnetic field sensor and a T-shaped ferromagnetic structure having an air gap. The current sensor is arranged in a recess of a busbar.

Current sensor

A steering torque sensor assembly includes a magnetically coded steering shaft section, which forms a primary sensor, and a secondary sensor for converting the changes in a magnetic field generated by the primary sensor into an electrical signal. The secondary sensor is situated on a sensor circuit board which runs parallel to the steering shaft section and is positioned opposite the primary sensor.

Steering torque sensor assembly

A method test an arrangement for measuring a torque acting on a steering shaft of a motor vehicle. The measurement is carried out using the inverse magnetostrictive effect. The steering shaft has an axis and at least two magnetization areas extending circumferentially around the axis. The arrangement comprises at least four magnetic field sensors for measuring an axial component of a magnetic field caused by the magnetization as well as by the torque. There are at least two combinations of at least two of the magnetic field sensors each, each of which is sufficient to measure the torque. First and second measurement values of the torque are determined with first and second combinations of the magnetic field sensors. The first measurement value and the second measurement value are compared, as a result of which a malfunction of the arrangement can be recognized.

Arrangement for measuring a torque acting on a steering shaft of a motor vehicle and method for checking the arrangement

The present disclosure relates to a sensor assembly for simultaneously capturing an angular position and a torque of a rotatable shaft. The sensor assembly comprises, for determining the angular position, a main body, two additional bodies, which are arranged coupled for rotation on the main body, and two angle resolvers, which are arranged on a circuit board in the immediate vicinity of the additional bodies. In this arrangement, the angles of the additional bodies are determined by the angle resolvers and passed as an angle signal to an evaluation unit arranged on the circuit board. The sensor assembly further comprises a direct coating, which captures a torque signal from the rotating shaft and passes this signal over a connection line to the evaluation unit. The connection line has a section wound multiple times around the shaft to permit a rotation of the shaft by at least +/−900°.

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Nuremberg, Germany

Thomas Lindenmayr