Abstract: Provided is a method for manufacturing a magnetostrictive torque sensor shaft mounting a sensor portion of a magnetostrictive torque sensor. The method includes conducting heat treatment on a shaft material including chrome steel or chrome-molybdenum steel by carburizing, quenching and tempering, and conducting shot peening on the shaft material after the heat treatment at least on a position where the sensor portion is to be mounted. The shot peening is conducted by firing shot with a particle size of not less than 0.6 mm and a Rockwell hardness of not less than 60 at a jet pressure of not less than 0.4 MPa for a jet exposure time of not less than 2 minutes.

Abstract: For more accurate load measurement, a load measuring arrangement includes a test object and a load measuring device for measuring a load on the test object. The load measuring device includes at least one magnetic field detection device for detecting a magnetic field parameter changing due to load at a measuring zone of the test object. The test object is work-hardened, at least at the measuring zone and at least in a near-surface region extending from a surface facing the magnetic field detection device to a depth of 20 ?m, in such a way that it has a dislocation density of at least 5e8/cm2 and/or a residual stress of at least 400 MPa in amount.

Abstract: A torque sensor to detect torque transmitted by a shaft having magnetostrictive properties is provided with a pair of cylindrical detection units arranged around the shaft and aligned side-by-side in an axial direction of the shaft, and first and second connection lines connecting the pair of detection units. Each detection unit includes first to fourth detection coils stacked in a radial direction. A series circuit formed by series connecting the first and fourth detection coils is parallel connected to a series circuit formed by series connecting the second and third detection coils. The first and second connection lines are configured to connect between corresponding connecting portions of the first and fourth detection coils and between corresponding connecting portions of the second and third detections coils, respectively. The torque transmitted by the shaft is detected based on a potential difference between the first connection line and the second connection line.

Abstract: A vehicle system includes a generator, a battery, a detector, and a controller. The generator is configured to generate electrical power based on power transmitted from an engine of the vehicle. The battery is chargeable with the electrical power generated by the generator. The detector detects the state of charge of the battery. The controller is configured to perform autonomous driving control of the vehicle. The controller restricts operation of equipment of the vehicle when an error is detected in the detector, in comparison with when the detector is normal.

Abstract: A torque measurement device includes a case that does not rotate even during use; a rotating shaft rotatably supported to the case and having a magnetostrictive effect part whose magnetic permeability changes according to a transmitted torque; and a magnetostrictive sensor having a detection part arranged closely adjacent to the magnetostrictive effect part so that a voltage changes according to change of the magnetic permeability of the magnetostrictive effect part, and being supported to the case; and the torque measurement device has a rotation-preventing construction configured to prevent the magnetostrictive sensor from rotating with respect to the case.

Abstract: The disclosure relates to a clutch assembly for a manual transmission of a motor vehicle, having an axially running transmission input shaft which, by way of a clutch having a central release mechanism disposed on the transmission input shaft, is able to be coupled to a motor output shaft. The transmission input shaft has at least one ferromagnetic measuring portion. The magnetization of the ferromagnetic measuring portion is able to be influenced in a magnetoelastic manner by a torsion of the transmission input shaft. Portions of the central release mechanism surround the at least one measuring portion and has a sensor device which is specified for measuring a variable as a function of the magnetization of at least one measuring portion.

Abstract: Technical solutions for a motor assembly for an electric power steering system are provided. The motor assembly comprises a motor configured to rotate a motor shaft to apply a drive torque to an output shaft of a steering column. The motor assembly also comprises a circuit card assembly including a torque and angle sensor disposed upon a printed circuit board and configured to measure a differential angle between rotational positions of the output shaft and an input shaft. The printed circuit board of the circuit card assembly is disposed perpendicular to a rotational axis of the steering column. The motor assembly also comprises an enclosure coupled to the motor and containing the circuit card assembly and a worm shaft coupled to rotate with the motor shaft and having a worm disposed helically thereabout for driving a worm gear coupled to the output shaft.

Abstract: 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.

Abstract: A sensor device that can suppress deformation of a holder due to a molding pressure applied during injection molding of a housing is provided. A second magnetism collection portion holder has a suppression portion that projects from a second holder body portion toward a first holder and that suppresses deformation of the holder due to the molding pressure applied during the injection molding. The distal end surface of the suppression portion abuts against the inner surface of a first holder body portion with the first holder and a second holder assembled to each other with a sensor unit interposed therebetween.

Abstract: A system and method are provided related to replacing components of a fully assembled torque sensor system having been previously calibrated, whereby the new system with its new components, which may be installed in a larger system, can be recalibrated at the location where the component replacement or servicing occurs. Individual components are provided with individual characteristics information, either on or associated with the shipped component, so the end user may retrieve the information and enter it in the software, such as that associated with a control unit, which is used with the fully assembled torque sensor. A database storing information about each manufactured component and their respective characteristics information, and fully assembled systems and their collective characteristics information, may be maintained and accessible by end users.

Abstract: An energy converter is formed by bonding a solid soft magnetic material and a solid magnetostrictive material. A vibration power generator is configured to generate power by means of the inverse magnetostriction effect of the magnetostrictive material produced by the vibration of a vibration unit configured using the energy converter. A force sensor device includes a force detection unit that detects magnetization change resulting from the inverse magnetostriction effect of the magnetostrictive material produced when a sensor unit configured using the energy converter deforms, and determines force acting on the sensor unit on the basis of the detected magnetization change. An actuator is configured to vibrate the vibration unit configured using the energy converter by means of the magnetostriction effect of the magnetostrictive material.

Abstract: A system may include a first sensor and a second sensor. The first sensor may include a driving pole that includes a driving coil that receives a driving current and emits a magnetic flux portion through a structure. The first sensor may also include a sensing pole that may include a sensing coil that receives the magnetic flux portion and generate a first signal based at least in part on the received magnetic flux portion. The first signal is based at least in part on a force on the structure. The second sensor may be disposed on the driving pole and may generate a second signal representative of a distance between the driving pole and the structure. The system may also include a circuit that may adjust the first signal based on the second signal.

Abstract: A torque detecting device detects a torsional torque between a first shaft and a second shaft based on a torsional displacement of a resilient member linking the first shaft and the second shaft coaxially. The torque detecting device is provided with: a magnet fixed to the first shaft; a first yoke fixed to the second shaft and arranged to be rotatable with respect to the magnet; a second yoke fixed to the second shaft and arranged to be rotatable together with the first yoke with respect to the magnet; a magnetic flux collector which collects magnetic flux; and a magnetic sensor which detects magnetic flux density. The magnetic flux collector is located to face both the first yoke and the second yoke. The magnetic sensor is located between the first yoke, from among the first yoke and the second yoke, and the magnetic flux collector, and detects the magnetic flux density between the first yoke and the magnetic flux collector.

Abstract: A control system for a motor includes: a first processing circuit configured to operate a first drive circuit; a second processing circuit configured to operate a second drive circuit; and a command circuit configured to output a signal relating to a command value for a steered angle of a steered wheel to the first processing circuit and the second processing circuit. The command circuit is configured to execute a detection process, a first notification process, and a second notification process. The first processing circuit is configured to execute a first correction process based on a first result signal to control the steered angle to the command value. The second processing circuit is configured to execute a second correction process based on a second result signal to control the steered angle to the command value.

Abstract: A compact directional high resolution magnetostrictive phased array sensor (MPAS) includes a magnetostrictive comb-shaped patch and a magnetic circuit device. The patch was machined with 24 comb fingers along its radial direction. The magnetic circuit device contains a sensing array of angularly spaced apart sensing coils and cylindrical biasing magnets. The individual sensing coils have distinct directional sensing preferences designated by the normal direction of the coil winding. The directional sensing feature of the developed MPAS is supported by the combined effect of the magnetic shape anisotropy of the comb finger formation in the patch and the sensing directionality of the sensing array. The MPAS detects the strain-induced magnetic property change on the comb-shaped patch due to the mechanical interaction between the patch and GLWs propagating in the structure under study.

Abstract: A concept for torque measurement on a shaft is described. To that end, millimeter waves are transmitted in the direction of a first encoder structure, which is coupled to a first shaft section of the shaft for conjoint rotation and is arranged around the shaft, and in the direction of a second encoder structure, which is coupled to a second shaft section of the shaft for conjoint rotation and is arranged around the shaft. The first encoder structure and the second encoder structure are rotatable relative to one another in the case of a torque to be transmitted via the shaft. At least one reception signal is generated on the basis of millimeter waves reflected or transmitted by the first and second encoder structures. A torque transmitted using the shaft is determined on the basis of the at least one reception signal.

Abstract: A method, computer program product, and system are provided to calibrate a sensor array with a plurality of sensors. The method can include sweeping a voltage of a reference electrode from a first voltage to a second voltage, where the reference electrode is in fluid communication with the sensor array. The output voltage of each of the plurality of sensors can be monitored at one or more voltages within the first and second voltages. An overall average gain of the plurality of sensors can be calculated at each of the one or more voltages. Further, an acquisition window for the sensor array can be determined. The acquisition window can include a maximum distribution of sensors that provides a maximal overall average gain at a particular reference electrode voltage.

Abstract: A torque detector detects a torsional torque between a first shaft and a second shaft based on a torsional displacement of an elastic member coaxially connecting the first shaft and the second shaft. The torque detector includes a magnetic flux generation unit and a magnetic sensor. The magnetic flux generation unit rotates with rotation of the first shaft and includes a first pole and a second pole into and out of which lines of magnetic force enter and exit. The magnetic sensor rotates with rotation of the second shaft and includes a detection surface for detecting a magnetic flux or a magnetic flux density. The first pole and the second pole are arranged to face each other across the magnetic sensor.

Abstract: A system and method for magnetizing a ferromagnetic element is disclosed. Electrodes are positioned on opposite surfaces of the ferromagnetic element and a current is applied to the electrodes, resulting in the formation of a magnetically conditioned region on the ferromagnetic element. Magnetic field sensors may be placed proximate the magnetically conditioned region. Output signals from the magnetic field sensors may be indicative of a load or torque applied to the ferromagnetic element.

Abstract: Systems and methods for monitoring a mechanical force applied to a wound site repairing structure are disclosed. In an embodiment, the systems include a wound site repairing structure, a magnetoelastic sensor coupled to the wound site repairing structure, and a detection system. The detection system includes an excitation coil configured to transmit a signal to the magnetoelastic sensor and a detection coil configured to detect a signal indicative of a mechanical force applied to the wound site repairing structure. The detection system also includes a detection unit configured to detect the signal indicative of the mechanical force applied to the wound repairing structure.

Abstract: A sensor device includes: multiple sensor units, each of which includes multiple sensor elements and a signal processing unit that generates and transmits an output signal including multiple detection signals corresponding to detection values of the sensor elements; and multiple control units, each of which includes a communication unit that receives the output signal, an abnormality monitoring unit that monitors abnormality of the respective sensor unit, and a physical quantity computation unit that computes a physical quantity based on at least one of the detection signals which is normal. One control unit mutually transmits and receives the detection signals as subject sensor signals received from the respective sensor unit and the detection signals as other sensor signals received from another one of the control units with another system control unit.

Abstract: A stator to guide a location-dependent magnetic field around a rotation axis including a first stator ring and a second stator ring arranged concentrically to the first stator ring. First claws project axially from the first stator ring in the direction of the second stator ring and are arranged circumferentially around a rotation axis and at a distance with the first claw gaps engaging in second claw gaps between second claws which are arranged circumferentially around the rotation axis, and protrude axially in the direction of the first stator ring at a distance to the second claw gaps. Each of the first and second claws includes a claw head. In at least one of the first claw gaps and in one of the second claw gaps relative to the corresponding claw head, a stator fastening element is arranged to fasten the first and second stator rings.

Abstract: There is provided a magnetostriction type torque detection sensor which is improved in torque detection sensitivity by increasing respective magnetic paths which are formed between a detected object and a plurality of cores attached to an insulating tubular body in such a manner that a magnetic path which is formed at the detected object is at a predetermined angle to an axis of the detected object. A plurality of cores is arrayed while being inclined at a predetermined angle to an axis of a detected object, and end surfaces of two-side leg portions are attached in such a way as to face the detected object via an inner circumferential surface of an insulating tubular body.

Abstract: A method of manufacturing an impeller rotor assembly including: manufacturing a cylindrical magnet in which hollow space is formed; manufacturing a magnet yoke which is assembled on the inner circumferential surface of the magnet in cylindrical form where hollow space is provided, and in which an outer diameter is 0.02 to 0.3 mm smaller than the inner diameter of the magnet; assembling the magnet and magnet yoke; and mold forming in which the assembly of the magnet and magnet yoke is integrated into the mold.

Abstract: A sensor device includes a base element extending in an axial direction and a first magneto elastic active region representing a first longitudinal section of a surface of the base element. The first longitudinal section extends in the axial direction and is magnetized in a first circumferential direction. The sensor device further comprises a first magnetic field sensor overlapping with the first longitudinal section, and a second magnetic field sensor disposed at a distance with respect to the first magnetic field sensor along the axial direction and overlapping with the first longitudinal section.

Abstract: A magnetostrictive torque sensor is provided that is capable of maintaining high detection accuracy, even when an excessive torque acts on a rotary shaft. The magnetostrictive torque sensor includes a magnetostrictive film 71 that is arranged on a second steering shaft 23, or a rotary shaft, having a substantially columnar shape so as to surround the second steering shaft 23 around its axis, and detects a rotational torque about the axis acting on the second steering shaft 23 based on a change in a magnetic property of the magnetostrictive film 71. Compressive stress remains on an outer circumferential surface of a sensor region 77 of the second steering shaft 23 around which the magnetostrictive film 71 is arranged. A plated layer of the magnetostrictive film 71 is arranged on the outer circumferential surface of the sensor region 77 in which compressive stress remains.

Abstract: A stress sensing system for measuring stress in a conductive target material includes at least one sensor positioned proximate to the conductive target material. The sensor is configured to measure stress in the conductive target material and to transmit a signal indicative of the measured stress to a controller. The controller is coupled in communication with the sensor. The controller is configured to receive the signal from the sensor, determine a runout portion of the signal corresponding to the runout of the conductive target material, determine a runout pattern waveform from the runout portion, and subtract the runout pattern waveform from the signal.

Abstract: Systems and methods described herein provide a position sensor system configured to sense a relative position between a reference object and a sensed object, where the sensed object has a varying surface. The position sensor system may include at least one force sensor supported by the reference object and positioned adjacent to and in sensory communication with the varying surface. The sensor may be configured to generate a signal related to a force sensed due to a position of the varying surface relative to the sensor. A processor may be configured to determine, using the force signal, the position of the sensed object relative to the sensor. The position sensor system may be used to identify a torque of an elongated vehicle member, for example.

Abstract: A device may obtain raw sensor data, collected by a sensing device, including a set of signal values and a set of temperature values corresponding to the set of signal values. The set of signal values may correspond to a magnetic field present at the sensing device. The device may determine, based on the set of signal values, a first value of a calibration parameter associated with calibrating the sensing device. The device may associate, based on the set of temperature values, a particular temperature value with the first value of the calibration parameter. The device may determine, based on the particular temperature value and a temperature compensation function associated with the calibration parameter, a second value of the calibration parameter. The device may selectively update the temperature compensation function based on a comparison of the first value and the second value.

Abstract: A mechanical component for a vehicle, having a measurement region with a surface, and at least one force sensor associated with the measurement region for detecting a force to which the component is exposed. The component (3) has, disposed in the measurement region, a hollow body (3b) with a cavity (4) in which the at least one force sensor (7) can be positioned.

Abstract: A magnetoelastic sensor. The magnetoelastic sensor uses strain-induced magnetic anisotropy to measure the tension or compression present in a plate. During construction, an annular region of the plate is magnetized with a circumferential magnetization. Magnetic field sensors are placed near this magnetized band at locations where the magnetization direction is non-parallel and non-perpendicular to the axis of tension. The strain-induced magnetic anisotropy caused by tension or compression then produces a shift in the magnetization direction in the plate regions near the field sensors, thereby causing magnetic field changes which are detected by the magnetic field sensors. The magnetic field sensors are connected to an electronic circuit which outputs a voltage signal which indicates the tension or compression in the plate.

Abstract: Provided is a torque sensor device to detect a torque between an input shaft and an output shaft through a relative rotation displacement therebetween. The torque sensor device includes: a housing to accommodate an end of the input shaft and an end of the output shaft: a magnet unit rotatably accommodated in the housing to be connected to one end of one of the input shaft and the output shaft; a collector unit rotatably accommodated in the housing to be connected to one end of the other of the input shaft and the output shaft, the collector unit forming a magnetic circuit together with the magnet unit; and a sensing unit including a torque sensor disposed at the outer circumference of the collector unit and configured to detect a magnetic field focused by the collector unit. The collector unit includes a lower collector including an annular lower collector ring.

Abstract: A sensor device includes a base element extending in an axial direction and a first magneto elastic active region representing a first longitudinal section of a surface of the base element. The first longitudinal section extends in the axial direction and is magnetized in a first circumferential direction. The sensor device further comprises a first magnetic field sensor overlapping with the first longitudinal section, and a second magnetic field sensor disposed at a distance with respect to the first magnetic field sensor along the axial direction and overlapping with the first longitudinal section.

Abstract: A torque steering angle sensor includes a ring magnet that rotates together with the first rotary member, a second magnetic field detecting element arranged opposite an outer peripheral surface of the ring magnet, a slide magnet arranged opposite the second magnetic field detecting element in the axial direction, and a slide mechanism moving the slide magnet in the axial direction depending on a rotation of the first rotary member; and wherein the steering angle computing portion includes a slide magnet distance computing portion calculating a migration length from a reference position of the slide magnet; and a steering angle correcting portion correcting an offset of the magnetic field strength in the radial direction based on the migration length and configures so as to compute the steering angle of the steering wheel using a magnetic field strength in the radial direction corrected by the steering angle correcting portion.

Abstract: There is provided a torque detector configured such that a magnetic shield is fixed to a holder without the need for a component for fixation of the magnetic shield, and no backlash is caused between the magnetic shield and the holder after the magnetic shield is fixed to the holder. The torque detector has engagement grooves into which a magnetic shield is to be inserted when the magnetic shield is fitted onto outer peripheral surfaces of a first holder and a second holder. The magnetic shield has end portions to be inserted into the engagement grooves, and each of the end portions is provided with engaging members that are always engaged with inner surfaces of the engagement grooves, respectively, while being inserted into the engagement grooves, to restrict movement of the end portions in the counter-insertion direction.

Abstract: A device compensates for the an influence of a magnetic field gradient which may be generated due to a component geometry of a component (1). The device includes at least two magnetic field sensors (17, 18) which are arranged outside of the magnetic balance of the ferromagnetic component (1). The at least two magnetic field sensors (17, 18) each have a differing sensitivity. One of the magnetic field sensors (17, 18) is exposed to the influence of the magnetic field gradient to a greater extent compared to the other magnetic field sensor due to its spatial arrangement relative to the ferromagnetic component (1). The one magnetic field sensor may have a sensitivity lower than the other magnetic field sensor.

Abstract: A non-contact power-feeding device comprises: a power transmitting unit that includes a first antenna coil, an oscillator and a driver that enables generation of an AC magnetic field via the first antenna coil based upon a signal provided by the oscillator; and a power receiving unit that includes a second antenna coil that is magnetically coupled with the first antenna coil, wherein the first antenna coil comprises: a flat-plane spiral resonance coil wound with a plurality of turns; and a flat-plane spiral power-feeding coil that is wound with a plurality of turns outward relative to the resonance coil so as to surround the resonance coil, and is magnetically coupled with the resonance coil.

Abstract: A tire-changing machine include a base frame; a grip unit fitted on the base frame for revolving around a rotation axis and gripping a vehicle wheel having a rim and a tire to fit/remove; first operating elements for placing the grip unit in rotation around the axis; at least an operating head fitted on the base frame and having at least a work tool; second operating elements for positioning the operating head and the wheel in a work configuration wherein the tool contacts the tire; the grip unit including a first measuring portion subject to a stress condition due to the contact, in correspondence to the first measuring portion, first sensor elements for detecting the stress condition of the first measuring portion and operatively associated with a processing and control unit for determining a danger condition of the tire starting from the stress condition.

Abstract: A torque sensor for being attached around a magnetostrictive rotating shaft includes a bobbin that is provided coaxially with the rotating shaft, wherein the bobbin includes a resin, a hollow cylindrical shape, and first inclined grooves and second inclined grooves formed on an outer peripheral surface thereof, wherein the first inclined grooves are inclined at a predetermined angle relative to an axial direction, and wherein the second inclined grooves are inclined at a predetermined angle relative to the axial direction in an opposite direction of the first inclined grooves, a first detection coil including an insulated wire wound around the bobbin along the first inclined grooves, a second detection coil including the insulated wire wound around the bobbin along the second inclined grooves, and a measurement portion that detects a inductance variation of the first and second detection coils so as to measure a torque applied to the rotating shaft.

Abstract: A device for determining an external magnetic influence has a component comprising ferromagnetic material and a magnetizable region comprising at least three opposing magnetic tracks. The at least three magnetic opposing magnetic tracks are magnetizable in opposite directions, form at least two groups, and are arranged axially relative to the component. A first magnetic field sensor for emitting a signal is arranged radially to the component and assigned to the first group. A second magnetic field sensor for emitting a signal is arranged radially to the component and assigned to the second group. Redundant magnetic field sensors, each configured for emitting a signal, may be arranged radially in relation to the component for each of the first and second groups. The signals of the first and the second sensors can be set in relation to each other and in relation to the signals of the redundant first and second sensors.

Abstract: Rotation angle computation modes include a normal mode and a simple mode. In normal mode, a rotation angle of an input shaft is computed based on output signals from first and second magnetic sensors, which are sampled at two sampling timings. In simple mode, the rotation angle of the input shaft is computed based on the output signals from the first and second magnetic sensors, which are sampled at one sampling timing, and an amplitude ratio between the output signals from the magnetic sensors set in advance. After a power supply is turned on, the rotation angle is computed in the simple mode until a condition that the rotation angle of the input shaft can be computed in the normal mode even if the immediately preceding value of the rotation angle of the input shaft is not present is satisfied. Then, the rotation angle is computed in the normal mode.

Abstract: Designs to package a magneto-elastic torque sensor in an automotive transmission for volume production applications are provided. A transfer case assembly includes a transfer case shaft having a magnetized region and a magnetic torque sensor, for detecting torque of the transfer case shaft, mounted on at least one bushing supporting the transfer case shaft. A drive axle assembly includes an axle housing, an input shaft having a magnetized region, and a magnetic torque sensor, for detecting torque of the input shaft, mounted to the axle housing.

Abstract: A detection device includes a driving circuit and a detection circuit. The detection circuit includes first and second electric charge-voltage conversion circuits to which first and second detection signals are input, first and second gain adjustment amplifiers that amplify output signals of the circuits, a switching mixer that has first and second input nodes to which the output signals of the first and second gain adjustment amplifiers are input, and performs differential synchronous detection thereon on the basis of a synchronization signal from the driving circuit, so as to output first and second output signals to first and second output nodes, first and second filters that receive the first and second output signals from the first and second output nodes of the switching mixer, and an A/D conversion circuit that receives output signals from the first and second filters so as to perform differential A/D conversion thereon.

Abstract: The invention relates to a method for producing a magnet unit (1) for a sensor device for detecting a measured variable which characterizes a rotational state of a steering shaft of a motor vehicle, by way of provision of an annular magnet element (3), provision of a sleeve (2) for connecting the magnet unit (1) to a shaft part of the steering shaft, and connection of the magnet element (3) to the sleeve (2), the sleeve (2) being configured with a main body (6) and a multiplicity of tabs (7) which protrude from the main body (6), and the connection comprising the tabs (7) being embedded into respective cut-outs (5) of the magnet element (3) with heating of the magnet element (3).

Abstract: There are provided an angle detection apparatus configured to correct an error included in angle information output from a multipolar angle detector, a motor having the angle detection apparatus, a torque sensor, an electric power steering apparatus, and a vehicle. A multiplication circuit (12) generates digital electrical angle information (?ed) from analog angle information output from a multipolar optical encoder (11), a first differentiator 30 differentiates the electrical angle information (?ed) to operate an electrical angular velocity (?ed), a first discontinuity correction circuit (31) carries out processing of correcting a discontinuity of an angular velocity in a temporal change for the electrical angular velocity (?ed), and a digital filter (32) carries out correction processing of reducing a high-frequency noise component for an electrical angular velocity (?edc) corrected by the first discontinuity correction circuit (31).

Abstract: A measuring system for registering the absolute rotation angle of a rotating, measured object, wherein a first gear is associated with a shaft of the measured object, wherein the first gear directly or indirectly engages at least a second gear and a third gear and wherein tooth counts the individual gears differ from one another. There is associated with each gear a rotation angle sensor, which registers the rotation angle of the associated gear. A calculating unit is provided, which ascertains at least the difference between the rotation angle of the second gear and that of the first gear and the difference between the rotation angle of the third gear and that of the first gear and, based on a summing of the differences of the ascertained rotation angle of the gears, determines the number of whole numbered revolutions and the remainder rotation angle of the shaft of the measured object.

Abstract: Provided are a rotation angle detector and a rotation angle detecting method. Each of the rotation angle detector and rotation angle detecting method detects a rotation angle of a rotating body according to a plurality of detection signals that vary depending on the rotation angle of the rotating body and have phases different from each other, to output the detected rotation angle as a detection angle, generates pseudo harmonics based on a multiplied detection angle obtained by multiplying the detection signal by a specified number, and removes the pseudo harmonics from the detection signals, to output a corrected detection signals from which the pseudo harmonics are removed to the detecting of the rotation angle, the detection angle being generated based on the correction detection signals.

Abstract: In various embodiments, an engine crankshaft is disclosed. The engine crankshaft comprises a rear bearing journal. The rear bearing journal has an output end. The rear bearing journal defines a substantially cylindrical cavity extending from the output end into the rear bearing journal. The engine crankshaft may further comprise at least one torque sensor operatively coupled to the rear bearing journal. The at least one torque sensor is configured to generate a torque signal corresponding to a torque exerted on the rear bearing journal. The torque exerted on the rear bearing journal is indicative of a torque output of an engine.

Abstract: A magneto elastic sensor having a longitudinally extending shaft like member which is subject to a load, is provided. A magneto-elastically active region is directly or indirectly attached to or forming a part of the member in such a manner that the mechanic stress is transmitted to the active region. A magnetically polarized region of the active region becomes increasingly helically shaped as the application stress increases. A magnetic field sensor is arranged approximate the magneto-elastically active region for outputting a signal corresponding to a stress induced magnetic flux emanating from the magnetically polarized region. The magnetic sensor determines one out of a shear stress and a compressive stress. The magnetic sensor can include at least one direction sensitive magnetic field sensor, which is arranged having a predetermined and fixed spatial coordination with the member.

Abstract: A measurement head (1) for a magnetoelastic sensor having a ferrite core (3). The core (3) has a first end (5), on which a field coil (9) which generates a magnetic field is fitted, and at least a second end (7), on which a magnetic field sensor (11, 41) is fitted.