A temperature compensated torque sensing system and methods for using the same are provided. The system can include a sensor head in electrical communication with a controller. The sensor head can contain a torque sensor including a core, a driving coil and a sensing coil. The sensor head can also include a temperature sensor coupled to the sensor head. The torque sensor can be configured to measure torque applied to a selected portion of a target based upon magnetic flux passing through the target, while the temperature sensor can be configured to concurrently measure the target temperature. The temperature sensor can be positioned for avoiding interference with sensed magnetic flux. The controller can adjust the determined torque using the temperature measurements to compensate for changes in magnetic properties of the target due to variation in target temperature. In this manner, the accuracy of the torque measurements can be increased.

The present invention may provide a torque sensor comprising, a rotor, a stator disposed outside the rotor; a sensor assembly configured to measure a magnetic field generated between the rotor and the stator; and a housing, the rotor and the stator are disposed outside the housing, the sensor assembly is disposed inside the housing, wherein the housing includes a protrusion which faces the stator, wherein the stator includes a groove, wherein the protrusion is disposed in the groove.

A device for determining an angle of rotation and/or a torque of a rotating part, having at least one angle detector for detecting an angular position of the rotating part relative to a reference position and at least one indexer for indexing at a 360 rotation of the rotating part relative to the reference position, the angle detector having a rotor connected in a non-rotatable manner to the rotating part with a base body for attachment to the rotating part and a plurality of vanes extending radially outwardly from the base body. At least one of the vanes of the rotor have a marker detectable by means of the indexer.

A device for determining a position of a moving part, having a position detector for detecting a position of the moving part relative to a reference position, wherein the position detector has a transmitter which is fixedly connected with the moving part. The position detector is designed such that it is operable in a position detection state for detecting the position of the moving part relative to the reference position and in a power saving state to save power. A capacitive sensor includes the transmitter, and the transmitter and the remainder of the capacitive sensor are designed to coordinate with each other and are arranged in such a way that in the power-saving state of the position detector, a movement of the moving part relative to the reference position is detected by the capacitive sensor and the position detector is transferred automatically from a power-saving state to a position-detecting state.

A sensor device includes a partial assembly, a circuit board, and a sensor housing. The partial assembly is constituted by selectively mounting a part that is at least one of a magnetism collection member and a driven wheel to a holder. The circuit board is provided with a detector configured to detect at least one of magnetic flux induced by the magnetism collection member and a rotational angle of the driven wheel in accordance with the part mounted to the holder. The sensor housing is penetrated by the shaft, and houses the partial assembly and the circuit board.

A magnetically responsive member is disposed on a rotating member along the circumference of the rotating member in such a manner that the magnetically responsive member rotates together with the rotating member, and the magnetically responsive member is formed in a line-shaped pattern varying cyclically in a rotational axis direction. A stator is disposed around the rotating member in a contactless manner, and the stator includes a primary coil wound around the rotating member, and a secondary coil forming a loop pattern of a plurality of cycles along the circumference of the rotating member. As the primary coil is AC-energized, an induced AC output signal corresponding to relative positions between the line-shaped pattern of the rotating member and the loop pattern of the secondary coil, which depend on a rotational position of the rotating member, is output from the secondary coil.

The invention relates to a stator holder (11) for a torque sensor device for sensing a torque applied to a shaft, in particular for sensing a torque applied to a steering shaft of a motor vehicle, and to a stator assembly (20) with such a stator holder (11), a method for assembling such a stator assembly (20), a torque sensor device with such a stator holder (11) and a motor vehicle with such a torque sensor device. The stator holder (11) has a receiving region (12) extending in the axial direction along an axis of rotation of the stator holder (11) and a fastening region (13) which, in a functional use state, is adjacent to the receiving region (12) in the axial direction and extends in the axial direction along the axis of rotation of the stator holder (11), wherein the receiving region (12) is designed for receiving a first stator element (14A) and a second stator element (14B) on the stator holder (11), and wherein the fastening region (13) has a fastening sleeve (13A) for the fastening of the stator holder (11) on the shaft for rotation therewith. The receiving region (12) and the fastening region (13) are formed here by separate components and/or separate assemblies.

Systems and methods for measuring displacement parameters of rotating shafts and couplings are disclosed. In some aspects, a measurement system includes a shaft extended in a longitudinal direction and a target wheel configured to rotate with the shaft. The target wheel includes sensor targets circumferentially distributed around the target wheel. Some of the targets are slanted in the longitudinal direction and some of the targets are parallel to the longitudinal direction. The measurement system includes a sensor array including at least three sensors mounted radially around the shaft and configured to detect the sensor targets as the target wheel rotates with the shaft. The measurement system includes a controller configured to receive sensor signals from the sensors and determine, based on the sensor signals, at least an axial displacement measurement of the shaft in the longitudinal direction and a radial displacement measurement of the shaft.

The invention relates to a device (14) and to a method for the contactless detection of a torque of a shaft (10) and/or torsional natural frequencies and/or torsional oscillations. The shaft (10) contains a ferromagnetic material. A measurement head (16) facing toward a shaft wall (12) comprises an excitation coil (22) which couples a magnetic field into the shaft (10). The measurement head (16) furthermore contains a number of measurement coils (24, 26, 28, 30), which measure the magnetic field emerging from the shaft (10).

The invention discloses an inductive torque sensor and a combined inductive torque and angle sensor for position sensing. The object of the invention to propose a torque sensor as well as a combined torque and angle sensor which does not require a shielding of the sensor PCB and which can provide a plausibility check of the torque sensor when using only three sensors will be solved by an inductive torque sensor for detection of torque movements comprising a stationary printed circuit board (PCB) with sensing coils, a primary target and a secondary target, whereas the primary target and secondary target each comprise of different metallic patterns, whereas each target covers 50% of the sensing coils and the combined coverage of both targets varies between 50% and 100% depending on the relative position between the two targets. The objective is also solved by a combined inductive torque and angle sensor comprising a primary target wheel, a secondary target wheel and a torsion beam, whereas the primary target wheel is centrally stacked on the torsion beam and comprises a metallic pattern for a steering angle 360 single-turn sensor and a first metallic pattern for the torque sensor, and the secondary target wheel comprises a second metallic pattern of the torque sensor.