Abstract: Systems and methods for measuring torque on a drive train component of a rotating drive system are disclosed. In some aspects, a system includes a target assembly, a sensor assembly, and a sensor processing unit. The sensor assembly is located proximate to the target assembly, and the sensor assembly includes sensors mounted radially around the shaft and configured to detect sensor targets as the target assembly rotates with the drive train component. The sensor processing unit is configured for receiving sensor signals from the sensor assembly and outputting a torque signal based on the sensor signals. The sensor processing unit is configured for receiving target calibration data for the target assembly and sensor calibration data for the sensor assembly. The sensor processing unit is configured for verifying that the target calibration data corresponds to the target assembly and that the sensor calibration data corresponds to the sensor assembly.

Abstract: 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.

Abstract: A torque sensor module for a steering device may include: a stator fixed to a designated position of a steering shaft and configured to detect a steering angle; a rotor rotatably fixed in the stator; a signal transmitter configured to transmit torsion information between the stator and the rotator to a Hall effect IC sensor (Hall IC); a printed circuit board having the signal transmitter and the Hall IC mounted thereon; and an ECU (Electronic Control Unit) of an EPS (Electronic Power Steering), mounted on the printed circuit board.

Abstract: Aspects of this disclosure relate to a magnetic sensor system for measuring any desired combination of measuring torque, rotation angle, and turn count of a shaft. The shaft may include two portions connected by a torsion element. The system can measure rotation angle using a magnetic target coupled to the shaft that produces a magnetic field that varies as a function of rotation angle. The system can measure torque applied to the shaft by measuring the difference in rotation angles between the two portions of the shaft and factoring in a torsion coefficient. The system can track a turn count of the shaft using a multi-turn sensor. The magnetic sensor system may be part of an electric power assisted steering (EPAS) system.

Abstract: Disclosed is a toothed wheel for a camshaft, forming a target for a camshaft position sensor, the toothed wheel including a circular body including two opposite main faces, and at least four teeth distributed around the circumference of the circular body, each tooth including two edges, one corresponding to a rising edge and the other to a falling edge, according to a direction of rotation of the wheel, the angular separation between the edges of each tooth being different for each tooth, characterized in that the four teeth are shaped so that the toothed wheel includes, considering the same main face and the same direction of rotation of the wheel: four edges of the same first rising or falling type spaced apart by 90° respectively, and three edges of the second falling or rising type respectively, spaced apart by 120° respectively.

Abstract: An assembly including an accessory gearbox mechanically connected to an electricity generator having a support shaft that includes a calibrated breakable section designed to disconnect the electricity generator physically from the accessory gearbox when an incident is detected on the electricity generator, the protection device including an unlocking mechanism provided with a lock that, under the action of an external control unit, releases a cutting tool so as to cut said calibrated breakable section.

Abstract: First and second encoders are fixed to a drive plate and a clutch cover of which the center portions are connected to each other via a connection shaft and which are disposed between, in a transfer path for torque outputted from an engine, a damper and a connecting/disconnecting part of a clutch mechanism of a transmission. At the same time, detection units of first and second sensors are opposed to portions to be detected of the first and second encoders, respectively.

Abstract: The system and method determines the torque applied to a rotating shaft by a load. A first sensor detects rotation of a first wheel and a second sensor detects rotation of a second wheel. A third sensor is proximate to the first sensor. A processor determines: 1) a magnitude of a phase angle (?A) based on the first and second sensors and having an unknown sign; 2) a magnitude of a phase angle (?B) based on the second and third sensors and having an unknown sign; and 3) a magnitude of a phase angle (?C) based on the first and third sensors and having a known sign. The processor determines a sign of the phase angle (?A) based on the values of the phase angles (?B) and (?C) and determines a torque value from the load applied to the shaft at least in part based on the magnitude and sign of the phase angle (?A).

Abstract: The invention relates to a twisting torque sensor, comprising a transmission shaft (12) subjected to the torque to be measured, a reference shaft (14), and a device for measuring an angular deformation representing the torque to be measured between the two shafts. The torque sensor is characterised in that the transmission shaft (12) comprises a bore (24) extending from one end of the transmission shaft (12), referred to as input (28) of the shaft, to an opposite end, and in that the torque sensor comprises an enclosure (22) for confining the temperature of the two shafts, and a fluid circulation circuit including a portion made up of said bore (24), an injector (32) for injecting the fluid into the bore (24) at said input (28) of the shaft, and a fluid temperature sensor (34) in the fluid circulation circuit, the measured temperature being intended for correcting the torque measurement.

Abstract: A method for calculating torque through a rotor mast of a propulsion system of a tiltrotor aircraft includes receiving the torque being applied through a quill shaft of the rotorcraft. The quill shaft is located between a fixed gearbox and a spindle gearbox, and the spindle gearbox is rotatable about a conversion access. The torque through the rotor mast is determined by using the torque through the quill shaft and the efficiency loss value between the quill shaft and the rotor mast.

Abstract: A method for calculating torque through a rotor mast of a propulsion system of a tiltrotor aircraft includes receiving the torque being applied through a quill shaft of the rotorcraft. The quill shaft is located between a fixed gearbox and a spindle gearbox, and the spindle gearbox is rotatable about a conversion access. The torque through the rotor mast is determined by using the torque through the quill shaft and the efficiency loss value between the quill shaft and the rotor mast.

Abstract: A device for a motor vehicle having a torque sensor device for detecting a torque applied to a steering shaft of the motor vehicle and with a steering angle sensor device for detecting a current steering angle of the steering shaft is disclosed. The torque sensor device has a magnetic stator designed to conduct magnetic flux from a magnet to at least one flux conductor and through the same to at least one magnetic sensor of the torque sensor device, and two stator parts that are disposed so as to be displaced in the axial direction relative to each other, each of which comprises an annular edge element extending in the radial direction. The steering angle sensor device includes at least one rotation transmission element with a permanent magnet and a magnetic field detector for detecting a rotary motion of the rotation transmission element.

Abstract: Systems and methods for improving hybrid vehicle torque control are presented. The system and methods included may estimate driveline torque via springs of a dual mass flywheel. The estimated driveline torque may provide feedback for adjusting operation of a driveline disconnect clutch and/or engine torque.

Abstract: An on-vehicle detector includes a torque detecting portion for magnetically detecting a torque transmitted to a rotating shaft rotated by steering operation, and a rotation detecting portion for magnetically detecting a rotation of the rotating shaft. The rotation detecting portion includes a magnet with a pair of magnetic poles and a magnetic detection element, the magnet being disposed on a side of the rotating shaft so as to rotate simultaneously with the rotating shaft and the magnetic detection element being disposed on a side of the rotating shaft to detect a change in magnetic flux density caused by the magnet approaching or moving away in accordance with the rotation of the rotating shaft. The magnet is disposed such that the pair of magnetic poles is aligned along a circumferential direction of the rotating shaft.

Abstract: A speed sensor including at least one sensor element and an analog-to-digital converter that digitizes the output signals of the at least one sensor element, and a Costas loop unit that is connected to the output of the analog-to-digital converter.

Abstract: A stator includes: cylindrical stator cores, each of which is formed of a laminated structure of electromagnetic steel sheets and at which an exciting coil and a detection coil are wound; and a mounting seat portion that is fixedly fitted to axial end faces of the stator cores. Insertion holes through which inserting bolts are passed are formed in the mounting seat portion.

Abstract: A CPU changes a turning angle corresponding to a steering angle required for a steering device to steer a host vehicle, depending on the amount of operation for moving a steering wheel at a reference position in a tilt direction and a push-pull direction. A tilt reaction force device and a push-pull reaction force device generate a reaction force against a second operation amount for moving the steering wheel from the reference position according to the reference position of the steering wheel relative to the driver which is adjusted by a tilt/expansion mechanism. In this way, even when the reference position of the steering wheel is changed, it is possible to give an appropriate reaction force to the driver since a reaction force against, for example, an operation of pushing or pulling the steering wheel is generated according to the reference position of the steering wheel relative to the driver.

Abstract: Torque can be detected in a transmission by using at least one vibration sensor to detect at least one vibration signal which is associated with a tooth engagement frequency of intermeshing transmission toothings, and the phase shift of which is dependent on at least one tooth engagement duration of the intermeshing transmission toothings. The tooth engagement duration is torque-dependent as a result of toothing deformations. A torque acting on the transmission is determined from the phase shift of the detected vibration signal and/or of the at least one tooth engagement duration.

Abstract: A stator includes: cylindrical stator cores, each of which is formed of a laminated structure of electromagnetic steel sheets and at which an exciting coil and a detection coil are wound; and a mounting seat portion that is fixedly fitted to axial end faces of the stator cores. Insertion holes through which inserting bolts are passed are formed in the mounting seat portion.

Abstract: A torsion angle sensor for measuring the torsion angle of two shafts coupled with one another having two planetary gear sets coupled via a shared planet carrier, with the sun gear of each gear set being connected to one of the two shafts respectively; including an arrangement whereby when a torsion angle is created between the two shafts, a movable internal gear of one of the planetary gear sets is rotated corresponding to the torsion angle, with its outer surface driving a sensor gear, which is connected to a rotational position sensor, the output signal of which is proportional to the torsion angle.

Abstract: The method measures consistency with a rotating consistency meter. The method comprises chopping with the teeth of a chopper structure optical radiation transmitted by an optical source to an optical detector while the shafts of the rotating consistency meter rotate. In addition, a chopper reference of the chopper structure chops optical radiation to form at least one reference pulse independent of the swivel between the shafts. The duration of each reference pulse is measured when measuring consistency. The change in the reference pulse is defined by comparing the duration of the measured reference pulse with the duration of the predefined reference pulse. The durations of the measuring pulses are corrected according to the change in the duration of the reference pulse.

Abstract: A torque sensor, which is for an electric power steering system that has an output shaft for rotating in response to rotation of an input shaft, may include a first rotor for rotating with the input shaft, a second rotor for rotating with the output shaft, a first pinion gear mounted for rotating in response to rotation of the first rotor, a first magnet mounted for rotating with the first pinion gear, a second pinion gear mounted for rotating in response to rotation of the second rotor, a second magnet mounted for rotating with the second pinion gear, a first sensor positioned for sensing an angular position of the first magnet, and a second sensor positioned for sensing an angular position of the second magnet. The first rotor and the second rotor are mounted so that there can be relative rotation between the first rotor and the second rotor.

Abstract: A robot control apparatus capable of largely reducing a calculation amount to be capable of lowering a load of a CPU is provided.

Abstract: An encoder shaft assembly includes a drive shaft having a drive gear, and an array of encoder units each having an encoder shaft and anti-backlash gears which engage the drive gear.

Abstract: A device for determining the actual reversal of the direction of rotation of a rotational drive continuing to operate after previous switching of the direction of rotation, in particular for window lifting systems or sliding roof drives in a motor vehicle, has a sensor wheel (1) with a coding structure (9) configured asymmetrically in respect of distribution along the periphery of the sensor wheel (1); a single detector (2), which generates a rotor speed-dependent pulse signal during rotation of the sensor wheel (1) by scanning the coding structure (9); and an evaluation unit (4), to which the pulse signal is fed and which determines the actual reversal of the direction of rotation by evaluating the pulse edges; wherein the coding structure (9) is formed by coding sectors (10) of a first sector width (11) and a reference coding sector pair (12) with a second sector width (13).

Abstract: A method and system for making available an improved phase signal of a phase sensor on a camshaft of an internal combustion engine immediately after switching on the phase sensor and/or the internal combustion engine are provided. In this context, the phase sensor scans the angle marks of a signal-generating wheel that is connected to the camshaft in a torsionally fixed manner. In addition, a crankshaft sensor scans the angle marks of a signal-generating wheel that is connected to the crankshaft in a torsionally fixed manner.

Abstract: An apparatus for determining the torque imposed on a rotatable shaft. The shaft has at least four paired probes, paired horizontal probes and paired vertical probes. The horizontal probes are positioned 90 degrees apart from the vertical probes. If the shaft moves horizontally, the time of arrival detected by the first horizontal probes will be later than a nominal value and the time of arrival for the second horizontal probes will be earlier than a nominal value with the same amount of error. Combining data from the first and second horizontal probes will then automatically cancel out any error from horizontal motion. Similarly, combining data from vertical probes will eliminate the error due to vertical movement. Because any radial movement is a combination of horizontal and vertical movements, the use of the probes removes errors due to movement in any direction.

Abstract: A device is described for determining the torque which is applied to a turbine shaft (10), the determination device having at least one system for contactless measurement of the integral torsion of the turbine shaft (10) and a unit for contactless measurement of the restoring constant of the turbine shaft (10). Furthermore, a method is described for determining the torque which is applied to the low-pressure turbine shaft (10) of a turbine engine, which is distinguished in that, to determine the torque, the integral torsion of the turbine shaft is measured by a contactless method and the restoring constant of the turbine shaft is measured.

Abstract: A method and system for calculation of rotation dependent parameters in a system that senses shaft rotation of a toothed speed wheel. The method includes determining the passing edges of multiple gear teeth on a rotating speed wheel; calculating rotational speed of the rotating machine based on the passing edges of multiple gear teeth of the speed wheel; calculating a rotation independent tooth spacing correction factor for each gear tooth on the rotating wheel; and correcting the calculated rotational speed of the rotating machine using the tooth corrections.

Abstract: Three elastic member-holding units are provided along the circumference of a cylindrical guide unit, which is a supporting unit of a first code wheel to hold a ring-shaped metallic elastic member, which is made of a band-like body of stainless steel or the like, and the metallic elastic member is extended to the inner circumference of the guide unit. In addition, the metallic elastic member extended to the inner circumference of the guide unit elastically supports the shaft of the first code wheel, which is a rotating member.

Abstract: A sensitizing ring for sensors having a reduced manufacturing cost and an improved profile shape manufacture with a diameter of 120 mm or less. The sensitizing ring of the present invention is used to measure the rate of rotation and position of a rotating element. The sensitizing ring of the present invention is usable in more applications, especially in the automotive industry. The sensitizing ring comprises a body, a plurality of teeth provided on an outer periphery thereof, and a plurality of gaps interposed between the teeth. The body is made of a polymeric material interspersed with a ferromagnetic material. Alternately, the body is made of a polymeric material having a coating layer of ferromagnetic material. In a further embodiment, the body includes ferromagnetic material in the polymeric material forming the teeth but does not include ferromagnetic material in the polymeric material forming the gaps.

Abstract: A first shaft and a second shaft are connected coaxially. A torsion bar converts a torque applied between two shafts into a torsion displacement. A multipolar magnet is fixed to the first shaft. One set of magnetic yokes is fixed to the second shaft and disposed in a magnetic field generated by the multipolar magnet. The magnetic yokes are opposed to each other via an air gap in an axial direction. A magnetic sensor is provided for detecting the density of magnetic flux generated in the air gap. A non-magnetic spacer is disposed between the magnetic yokes as a means for positioning the magnetic yokes. The spacer and the magnetic yokes are integrated by resin molding.

Abstract: A device determines a torque that is exerted on a shaft, the shaft having a first shaft section and a second shaft section, the two shaft sections being rotatable in relation to one another. The device comprise a multi-pole magnetic ring and a stator support that is fixed to the second shaft section. Two stator elements are fixed to the stator support and each stator element has fingers that project in an axial or radial direction, are uniformly distributed at least over part of the circumference and are interspaced by gaps. The magnetic ring is situated between the fingers of one stator element and the fingers of the other stator element. A second magnetic ring is located on one of the two shaft sections and a magnetic sensor is mounted on one of the two shaft sections.

Abstract: A torque detection system is provided for detecting torque applied to a rotary shaft. A spring element is connected to an input and output shaft. As torque is applied to the shaft system, the input shaft is rotationally offset from the output shaft and a sensing system is provided for sensing the amount of rotational offset which is then correlated to a rotational torque level.

Abstract: A device for determining the actual reversal of the direction of rotation of a rotational drive continuing to operate after previous switching of the direction of rotation, in particular for window lifting systems or sliding roof drives in a motor vehicle, has a sensor wheel (1) with a coding structure (9) configured asymmetrically in respect of distribution along the periphery of the sensor wheel (1); a single detector (2), which generates a rotor speed-dependent pulse signal during rotation of the sensor wheel (1) by scanning the coding structure (9); and an evaluation unit (4), to which the pulse signal is fed and which determines the actual reversal of the direction of rotation by evaluating the pulse edges; wherein the coding structure (9) is formed by coding sectors (10) of a first sector width (11) and a reference coding sector pair (12) with a second sector width (13).

Abstract: A rotational angle detecting apparatus, in which first targets and second targets, the number thereof is coprime with each other, are provided at the rotors rotating coaxially with each other. Rotational angle of the rotor is detected based on the detection signals from each of two sensors disposed opposite to the targets respectively, which output detection signals having phases different from each other as the rotor rotates. Based on a magnitude relation between one detection signal and the other detection signal from each of the two sensors, the range of the electrical angle of the other detection signals is determined. Relation between a detection signal and an electrical angle is stored in advance. Based on the determined electrical angle, and referring to the relation, the electrical angle of the other detection signal is obtained; thus, the rotational angle of the rotor is detected.

Abstract: A method for assembling a speed-sensing device for monitoring an angular velocity of a rotatable shaft, comprises the steps of: providing a hollow housing having a speed sensor hole, installing a stopper plug into the speed sensor hole so that a stein portion of the stopper plugs extends into the housing, inserting a tone wheel into the housing and inserting the shaft into the housing until the shaft positively engages the tone wheel. The speed-sensing device comprises the tone wheel non-rotatably mounted to the shaft. The shaft has a shaft groove formed on an outer peripheral surface thereof, while the tone wheel has a wheel groove formed on an inner peripheral surface thereof. The speed-sensing device further includes a snap ring retainer provided to engage the complementary shaft and wheel grooves in order to prevent movement of the tone wheel along the shaft.

Abstract: A system to diagnose a malfunction of a torque sensor in a vehicle steering system includes a voltage difference generator that outputs a voltage difference by comparing a voltage of a contact part between a temperature correcting coil and a torque detecting coil in a torque sensor for a steering system and an offset voltage generated from an offset voltage generator, a malfunction determining part that determines a malfunction by comparing a reference voltage and an output voltage of said voltage difference generator, and a controller that executes a neutral steering when a malfunction is determined in said malfunction determining part.

Abstract: The present invention provides a torque detecting apparatus that includes a drive plate that is elastically deformable in response to an applied torque, strain gauges, and a torque detecting circuit, and the torque detecting apparatus can accurately detect torque transmitted from an engine output element of a vehicle having an automatic transmission to a torque converter input element.

Abstract: A torque sensor including a first step formed on an inner peripheral surface of a sensor housing, a second step formed on an outer peripheral surface of a detection coil assembly, the first and second steps axially supporting each other, and a groove formed on the outer peripheral surface of the detection coil assembly at a position adjacent to the second step such that the groove faces an inner surface portion of the first step, so that the first step penetrates the groove while being plastically deformed when the detection coil assembly is pressed toward the first step, thereby causing the detection coil assembly to be fixed to the inner peripheral surface of the sensor housing.

Abstract: A torque measuring apparatus and torque monitoring system according to the exemplary embodiment of the present invention measures torque of a rotating shaft and is capable of synchronously measuring torque of a plurality of objects.

Abstract: A driving control unit (21b) of a controller (21) determines which of an input shaft (32) and an output shaft (33) in a steering shaft (3) is dynamically superior and when the output shaft (33) is dynamically superior to the input shaft (32), a motor (6) is driven so that torque resulting in a time integral value smaller than a time integral value of relative torque between the input shaft (32) and the output shaft (33) is generated in a backward assist direction.

Abstract: A torque detecting device includes an elastic member disposed between an input shaft and an output shaft of a torque transmitting apparatus, first and second resolvers detecting rotational angles of the elastic member at sides of the input shaft and the output shaft. The first resolver includes a first excitation winding coil and a first output winding coil, and the second resolver includes a second excitation winding coil and a second output winding coil. The first and second excitation winding coils are connected to a ground, and the first and second output winding coils are connected to the other ground.

Abstract: A rotational angle detecting apparatus, in which first targets and second targets, the number thereof is coprime with each other, are provided at the rotors rotating coaxially with each other. Rotational angle of the rotor is detected based on the detection signals from each of two sensors disposed opposite to the targets respectively, which output detection signals having phases different from each other as the rotor rotates. Based on a magnitude relation between one detection signal and the other detection signal from each of the two sensors, the range of the electrical angle of the other detection signals is determined. Relation between a detection signal and an electrical angle is stored in advance. Based on the determined electrical angle, and referring to the relation, the electrical angle of the other detection signal is obtained; thus, the rotational angle of the rotor is detected.

Abstract: A device for sensing the input shaft speed of an automotive automatic transmission that is driven by the engine through the fluid coupling of a torque converter. The speed sensor device includes circumferentially spaced markings about the transmission input shaft and a speed sensor that is placed at close proximity to the circumferentially spaced markings through a hole in the torque converter stator shaft. An electronic control unit (ECU) analyzes the sensor output signal and in the case of an active speed sensor it also functions as its power source. During vehicle operation, the transmission input shaft rotates the target wheel in front of the speed sensor causing modulation of its output signal. The electronic control unit analyzes the signal modulation and calculates the input shaft rotational speed. A variety of sensor/target-wheel options and sensor mounting techniques could be used depending on the application constraints.

Abstract: A method of detecting a sensed parameter for a motor control system comprising: receiving a sensor signal, the sensor signal exhibiting a frequency responsive to an inductance of a non-contacting variable reluctance rotational displacement sensor, wherein the inductance is indicative of a displacement of the sensor and responsive to the sensed parameter; capturing a first transition of the sensor signal and a time associated therewith; capturing a second transition of the sensor signal and a time associated therewith; calculating a period for the sensor signal; and computing a value for the sensed parameter, the value responsive to the period.

Abstract: A variable reluctance rotational displacement sensor with: an annular sleeve; a coil coaxially aligned within the sleeve; a first ring in magnetic communication with the sleeve, coaxially aligned and configured to rotate relative to the sleeve. The first ring including a first plurality of axially directed teeth arranged about a circumference of the ring on a front portion thereof. The sensor also includes a second ring in magnetic communication with the first ring and the sleeve, the second ring coaxially aligned and configured to rotate relative to the first ring and the sleeve and including a second plurality of axially directed teeth configured substantially the same as the first plurality of axially directed teeth and oriented adjacent to the first plurality of axially directed teeth on a rear portion of the second ring. The coil generates a signal responsive to a differential displacement between the first and second rings.

Abstract: The present invention is an apparatus for obtaining an indication of torque, axial alignment and axial location for a shaft rotating about an axis of rotation. A first set of detectable elements are operably connected to the shaft and positioned parallel to the axis of rotation. A second set of detectable elements parallel to the axis of rotation are interlaced in a sensing plane with said first set of detectable elements. The second set of detectable elements have a variable relative position with respect to the first set of detectable elements. A third set of detectable elements are positioned laterally to the first set of detectable elements and the second set of detectable elements in an alignment plane parallel to the sensing plane. The third set of detectable elements are positioned at an offset angle to the axis of rotation.

Abstract: A device for determining the absolute angular position of a turning device with respect to a fixed structure, including an encoder provided with a main multipolar track and a multipolar track called “top turn”, said top turn track includes M singularities which are distributed angularly so that the top turn signal (C) is arranged so as to define, in conjunction with the signals A and B, the binary sequences which are each representative of an absolute angular position of the encoder. The invention also concerns a steering system for automobiles as well as a bearing including such a device.

Abstract: This invention is to provide an improved device for measuring torque with high accuracy and a simple structure. The device is so constructed that one end of a torsion bar (which is twisted depending on an actual steering operation) is combined with one end of an input shaft, while the other end of the torsion bar is combined with one end of an output shaft. The other end of the input shaft is combined with a steering wheel, while the other end of the output shaft is connected to vehicle wheels. A rotor of a first resolver comprising the rotor having a resolver excitation winding and a stator having a resolver output winding is fixed to the input shaft (one end of which is combined with the steering wheel). A rotor of a second resolver comprising the rotor having a resolver excitation winding and a stator having a resolver output winding is fixed to the output shaft (the other end of which is connected to the vehicle wheels).