A measurement device for measuring an angular position of a movable body that is rotatable about an axis of rotation relative to a stationary body, the device comprising, facing each other, a movable portion with a first printed circuit having first tracks formed thereon defining a plurality of target patterns and a stationary portion with a second printed circuit having second tracks formed thereon defining a plurality of measurement patterns that are angularly distributed in regular manner. The target patterns are angularly distributed in irregular manner, the number of target patterns is not less than two, and the product of the number of target patterns multiplied by the number of measurement patterns is not less than twelve.

A blade angle feedback system for an aircraft-bladed rotor rotatable about a longitudinal axis and having an adjustable blade pitch angle is provided. A feedback device is coupled to rotate with the rotor and to move along the axis with adjustment of the blade angle. At least one position marker is affixed to a core of the feedback device and extends along a direction angled relative to the axis. The core is made of a first material having a first magnetic permeability and the position marker comprises a second material having a second magnetic permeability greater than the first magnetic permeability. A sensor is positioned adjacent the feedback device and produces, as the feedback device rotates about the axis, a sensor signal in response to detecting passage of the position marker. A control unit generates a feedback signal indicative of the blade angle in response to the sensor signal.

An angular position sensor comprising two annular sensors, one annular sensor for generating a coarse resolution time varying signal in the presence of a rotatable inductive coupling element and the other annular sensor for generating a fine resolution time varying signal in the presence of the rotatable inductive coupling element. The rotatable inductive coupling element comprising a first annular portion comprising at least one annular conductive sector and at least one annular non-conductive sector and a second annular portion comprising at least one annular conductive sectors and at least one annular non-conductive sector, wherein the number of annular conductive sectors of the first annular portion and the second annular portion are different. In particular, the annular conductive sectors of the annular portions may comprise 50% or 75% of the total area of the annular portions.

An angular position sensor comprising two annular sensors, one annular sensor for generating a coarse resolution time varying signal in the presence of a rotatable inductive coupling element and the other annular sensor for generating a fine resolution time varying signal in the presence of the rotatable inductive coupling element. The rotatable inductive coupling element comprising a first annular portion comprising at least one annular conductive sector and at least one annular non-conductive sector and a second annular portion comprising at least one annular conductive sectors and at least one annular non-conductive sector, wherein the number of annular conductive sectors of the first annular portion and the second annular portion are different. In particular, the annular conductive sectors of the annular portions may comprise 50% or 75% of the total area of the annular portions.

The present invention relates to a measuring device with a magnetic field sensor for detecting at least one operating parameter of an agricultural joint shaft for torque transmission between a power take-off shaft of a towing vehicle and a transmission of an agricultural appliance, which includes at least one journal cross, to the opposing journals of which a shaft body is connected, and a protective tube rotatably accommodating the shaft body therein, wherein the magnetic field sensor is adapted to measure a magnetic field emanating from the bare shaft body of the joint shaft.

An apparatus of sensing a speed of a wheel, capable of improving operational stability and/or reliability of a sensor, a control system using the same, and an operating method thereof, wherein the apparatus is an apparatus of sensing a rotation speed of a wheel of a vehicle, provided to be spaced from an external circumferential surface of a tonewheel mounted on the wheel, includes a housing; a magnet disposed in the housing; a magnetic sensor located adjacent to the magnet in the housing; and a coil wound around the magnet.

An apparatus of sensing a speed of a wheel, capable of improving operational stability and/or reliability of a sensor, a control system using the same, and an operating method thereof, wherein the apparatus is an apparatus of sensing a rotation speed of a wheel of a vehicle, provided to be spaced from an external circumferential surface of a tonewheel mounted on the wheel, includes a housing; a magnet disposed in the housing; a magnetic sensor located adjacent to the magnet in the housing; and a coil wound around the magnet.

Disclosed is a method for operating a rotational speed sensor comprising a sensor element in a vehicle, wherein the sensor element interacts with a magnet wheel on a wheel of the vehicle and an effective parameter generated by the interaction of the magnet wheel with the sensor element is evaluated in the form of a measurand in an evaluation module and, depending on the measurand, an output variable characterizing the rotational speed of the wheel is output, wherein the sensor element is supplied via the evaluation module with a sensor voltage influencing the measurand. A sensor assembly is also disclosed.

Disclosed is a method for operating a rotational speed sensor comprising a sensor element in a vehicle, wherein the sensor element interacts with a magnet wheel on a wheel of the vehicle and an effective parameter generated by the interaction of the magnet wheel with the sensor element is evaluated in the form of a measurand in an evaluation module and, depending on the measurand, an output variable characterizing the rotational speed of the wheel is output, wherein the sensor element is supplied via the evaluation module with a sensor voltage influencing the measurand. A sensor assembly is also disclosed.

A variable reluctance resolver with a stator assembly including a printed circuit board having a first surface and a second surface. A plurality of inductors coupled with the annular printed circuit board first surface, wherein the plurality of inductors are in electrical connection with a power source. The variable reluctance resolver also having a rotor including a body with a first surface and a second surface, an annular recess located in the rotor first surface. The annular recess including a radially inner surface and a radially outer surface, wherein the annular recess defines a width variable with angular position. The plurality of inductors are located at least partially within the annular recess and the rotor is operable to rotate relative to the stator assembly.