Rotary Patents (Class 324/207.25)
  • Patent number: 11858132
    Abstract: An encoder device including a position detection unit for detecting position information of a moving part; a magnet having a plurality of polarities along a moving direction of the moving part; and an electric signal generation unit for generating an electric signal, based on a magnetic characteristic of a magnetosensitive part, the electric signal generation unit having the magnetosensitive part whose magnetic characteristic is changed by a change in magnetic field associated with relative movement to the magnet, wherein the magnetosensitive part is disposed so that the magnetosensitive part is spaced apart from a side surface of the magnet in a direction orthogonal to the moving direction and a length direction of the magnetosensitive part is orthogonal to tangential directions of at least some of magnetic field lines of the magnet.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: January 2, 2024
    Assignee: NIKON CORPORATION
    Inventor: Akihiro Watanabe
  • Patent number: 11860003
    Abstract: A method of position estimation including: a signal detection step in which N (where N is an integer of 3 or more) sensors each detect a magnetic field which is in accordance with a position of a mover and output a detection signal as an electrical signal, the detection signals being displaced in phase by an angle obtained by dividing 360 degrees by N; a crossing detection step in which a crossing detection section sequentially detects a crossing at which each detection signal having been output through the signal detection step crosses another; a subdivision detection step in which a subdivision detection section detects a portion of the detection signal that connects from a crossing to another crossing which is adjacent to that crossing, as one or more subdivision signals; and a line segment joining step in which a line segment joining section sequentially joins the subdivision signals and estimates the position of the mover based on the plural subdivision signals having been joined, to generate an estimate
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: January 2, 2024
    Assignee: NIDEC CORPORATION
    Inventors: Tomohiro Fukumura, Atsushi Fujita, Shota Ishigami
  • Patent number: 11828591
    Abstract: Even using the redundant system resolver in which the magnetic interference between systems occurs, to provide an angle detection apparatus which can reduces the influence of the magnetic interference and can calculate the rotational angle with good accuracy, without performing synchronous control between systems in real time. An angle detection apparatus is provided with a resolver which has the first system windings and the second system windings in which magnetic interference occurs between systems; a first system removal processing unit that performs a second cycle component removal processing which removes component of the second cycle of the second system, to detection values of the first system winding output signals; and a first system angle calculation unit that calculates a first angle of rotor, based on the detection values of the first system winding output signals after the second cycle component removal processing.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: November 28, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Toshihiro Matsunaga, Hiroko Ikeda, Seiji Sawada, Kenta Kubo, Kenji Ikeda
  • Patent number: 11821467
    Abstract: A sensor bearing unit includes a bearing having a first ring and a second ring centered on an axis, an impulse ring secured to the first ring and a sensor device secured to the second ring for detecting rotational parameters of the impulse ring. The impulse ring is secured into a groove formed on a cylindrical surface of the first ring which is located radially on a side of the first ring opposite the second ring.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: November 21, 2023
    Assignee: AKTIEBOLAGET SKF
    Inventors: Maruti Vitthal Khaire, Manoj M Babu
  • Patent number: 11814970
    Abstract: Methods and systems for measuring an axial position of a rotating component of an engine are described herein. The method comprises obtaining a signal from a sensor coupled to the rotating component, the rotating component having a plurality of position markers distributed about a surface thereof, the position markers having an axially varying characteristic configured to cause a change in a varying parameter of the signal as a function of the axial position of the rotating component. Based on the signal, the method comprises determining a rotational speed of the rotating component from the signal, determining the varying parameter of the signal, and finding the axial position of the rotating component based on a known relationship between the axial position, the rotational speed, and the varying parameter of the signal.
    Type: Grant
    Filed: July 11, 2022
    Date of Patent: November 14, 2023
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Antwan Shenouda, Ella Yakobov
  • Patent number: 11796350
    Abstract: A rotation detection device includes: a detector arranged with a gap to a rotating body in which rotation position information is periodically provided at regular intervals, and detecting a magnetic change as a rotation position of the rotating body; and a signal processor acquiring the rotation position information. The detector has first and second magnetic elements arranged with an interval of a/2 in a rotation direction. Each regular interval is defined as a. The first magnetic element outputs a first signal having a period corresponding to the regular intervals. The second magnetic element outputs a second signal having an opposite phase to the first signal and the period. The signal processor acquires a differential signal between the first and second signals as the rotation position information.
    Type: Grant
    Filed: November 10, 2022
    Date of Patent: October 24, 2023
    Assignee: DENSO CORPORATION
    Inventors: Atsushi Kobayashi, Michihiro Makita, Yusuke Kariya
  • Patent number: 11799365
    Abstract: A sensing apparatus includes a first sensor unit including a first hall sensor and a second hall sensor, wherein the first hall sensor outputs two first output values having different phases from each other, and the second hall sensor outputs two second output values having different phases from each other; a second sensor unit outputs a third position detection value of a rotor; and a control unit that compares a first position detection value of the rotor, which is on the basis of the first output values, with a second position detection value of the rotor, which is on the basis of the second output values, and compares at least one of the first position detection value of the rotor and the second position detection value of the rotor, with the third position detection value of the rotor outputted from the second sensor unit.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: October 24, 2023
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Won Kyu Kim
  • Patent number: 11799345
    Abstract: A stator has a core, an insulating member that covers the core, windings that are wound around the insulating member, and conductive members that supply drive power to the windings. The conductive member has a joining part that contacts a lower surface of the insulating member, an insertion part that rises axially upward from one end of the joining part, and a board connection part that descends axially downward from the other end of the joining part. The insertion part penetrates through the insulating member and protrudes at the top of the stator, where it is connected to a coil end. The board connection part is fixed, by a method such as press-fitting, to a circuit board on which a Hall element or the like is mounted.
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: October 24, 2023
    Inventor: Masahiro Nishidate
  • Patent number: 11788864
    Abstract: An apparatus for determining an item of position information relating to a position of a magnetic field transducer relative to a position sensor. The position sensor is designed to generate at least one periodic measurement signal when the magnetic field transducer moves relative to the position sensor. A processing unit of the apparatus is designed to determine the position information based on a respective measurement signal value of a respective periodic measurement signal using a calibration function assigned to the respective periodic measurement signal. The assigned calibration function represents the respective periodic measurement signal using a Fourier series having a respective plurality of Fourier coefficients which differ from zero and are of an order greater than zero. The processing unit is designed to at least approximately solve the assigned calibration function for the respective measurement signal value in order to determine the position information.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: October 17, 2023
    Assignee: Infineon Technologies AG
    Inventor: Manuel Gillinger
  • Patent number: 11784430
    Abstract: A method is disclosed for producing an angled plug-in connector, which has an insert-molded, prefabricated busbar stack that has at least two busbars which are next to one another, are spaced apart by an insulating gap, and are made of an electrically conductive planar material. Each of the busbars includes a starting region which is in a reference plane and oriented in a reference direction, an end region which is bent out of the reference plane about a creasing angle and oriented in a transverse direction, a curved transition region from the reference direction into the transverse direction, and a bending region oriented along a bending line. The bending line is oriented, with respect to the reference direction, at a bending line angle, and the busbar stack is insert moulded between the starting region and the end region having a housing made of an electrically non-conductive plastics material.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: October 10, 2023
    Assignee: Robert Bosch GmbH
    Inventors: Stefan Weller, Thomas Breinlinger, Frederic Cousin
  • Patent number: 11773955
    Abstract: A rotating component includes a metal plate fixed to an end portion of the metal shaft, and a resin valve gear integrally formed with the plate by insert molding. The plate is formed with a circular fitting hole that fits with the end portion of the shaft, and a positioning recess that is recessed from one side to the other side of the plate.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: October 3, 2023
    Assignee: DENSO CORPORATION
    Inventor: Yuichiro Moritani
  • Patent number: 11733790
    Abstract: A ring input device, and more particularly to pressure-sensitive input mechanisms within the ring input device that detect pressure to initiate an operation, is disclosed. Because finger rings are often small and routinely worn, electronic finger rings can be employed as unobtrusive communication devices that are readily available to communicate wirelessly with other devices capable of receiving those communications. Ring input devices according to examples of the disclosure can detect press inputs on its band to generate inputs that can then be wirelessly communicated to companion devices.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: August 22, 2023
    Assignee: Apple Inc.
    Inventors: Michael Beyhs, Richard G. Huizar, Filip Ilievski, Jean Hsiang-Chun Lu, Thayne M. Miller
  • Patent number: 11698421
    Abstract: Apparatus and associated methods relate to measuring position and displacement of a 2D surface magnet array of at least three adjacent magnetic north and south tracks with an acute angle versus its motion displacement relative to a magnetic field sensor (e.g., magnetic sensing probe). In an illustrative example, the geometry of the 2D surface magnet array may be planar with adjacent and alternating north and south pole regions. In some embodiments, the 2D surface magnet array geometry may take the form of (1) an axial cylindrical helical multipole magnet array having individually magnetized layers that are oriented in helical shape, or (2) a radial disk spiral multipole magnet array with at least three adjacent north and south tracks oriented as a spiral shape.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: July 11, 2023
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Pascal Schweizer, Christopher Kenney, Richard Andrews
  • Patent number: 11692808
    Abstract: A rotational position sensor arrangement having first and second sensors positioned adjacent to an axial face of a target disc. The target disc has the axial face either one wave profile or radially spaced apart first and second wave profiles, having respectively, a first plurality of segments and a second plurality of segments, with each of the segments being formed with axially offset peaks and valleys which extend along radial lines. The valleys separate the segments, and the number of the first plurality of segments is different than the number of the second plurality of segments. The first and second sensors are located at different radial distances from the axis and signal a controller with data on a field variance due to a difference in at least one of a size or location of the one wave profile or the first and second wave profiles as they pass the first and second sensors in order to determine a rotational speed and/or position.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: July 4, 2023
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Edward J. Wey
  • Patent number: 11662260
    Abstract: Methods and apparatus for linear inductive torque sensing that may include transmitting an AC magnetic field with a transmit coil toward a conductive target and receiving a field reflected by the conductive target with a receive coil, wherein the conductive target comprises first and second targets positioned with respect to each other and each shaped to linearly increase or decrease an amount of conductive area of the conductive target due to relative movement of the first and second targets which changes an amount of the field reflected by the conductive target. A signal from the receive coil can be processed to determine a relative position of the first and second targets corresponding to an amount of torque on an elongate member connected to the first and second targets. In other embodiments, a change in inductance of the transmit coil is measured to determine relative target position.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: May 30, 2023
    Assignee: Allegro MicroSystems, LLC
    Inventors: Alexander Latham, Hernán D. Romero
  • Patent number: 11661042
    Abstract: 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.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: May 30, 2023
    Assignee: ZF CV Systems Hannover GmbH
    Inventors: Andreas Goers, Julian Van Thiel, Oliver Wulf
  • Patent number: 11656240
    Abstract: A magnetic sensor module includes an axially polarized back-bias magnet having a body that radially extends from a magnet center axis and a bore extending along the magnet center axis. The magnet generates a radial bias magnetic field about a magnetization axis in a sensor plane. The magnetic field has a magnetic flux density of substantially zero along a perimeter of a zero-field closed loop located in the sensor plane. The magnetic sensor module includes a shim polepiece mechanically coupled to an end of the axially polarized back-bias magnet. The shim polepiece includes a second bore centered on a polepiece center axis that is aligned with the magnet center axis. The second bore extends through the shim polepiece along the polepiece center axis.
    Type: Grant
    Filed: August 30, 2022
    Date of Patent: May 23, 2023
    Assignee: Infineon Technologies AG
    Inventor: Gernot Binder
  • Patent number: 11643133
    Abstract: Disclosed is an electronic device for determining the angular position of a shaft of a motor vehicle, the device including a printed circuit board and a magnetic guide including at least two fastening tabs for fastening to the printed circuit board, the printed circuit board including a base substrate and at least two fastening areas for fastening the magnetic guide, each designed to receive a fastening tab of the magnetic guide, the fastening tab defining a fastening orifice. Each fastening area is defined on the base substrate of the printed circuit board and includes a pad fastened to the base substrate. Each fastening tab is joined to the pad of the corresponding fastening area by way of an adhesive that is applied in its fastening orifice.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: May 9, 2023
    Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Stéphane Couarraze
  • Patent number: 11614344
    Abstract: A method of determining an angular position of a target of an inductive angular position sensor system, relative to a substrate, includes the steps of: receiving, demodulating and digitizing signals, and reducing a DC-offset of the digital signals, and determining an angular position. The step of reducing the DC-offset involves: i) initializing a DC-correction value; ii) subtracting the DC-correction value to obtain DC-shifted signals; iii) clipping the DC-shifted-signals to obtain clipped signals; iv) calculating a first sum by summing values of the clipped signal over one period, and v) calculating a second sum by summing absolute values of the clipped signal over said period; vi) adding to each DC correction value K times the first sum divided by the second sum, where K is a predefined constant.
    Type: Grant
    Filed: December 13, 2022
    Date of Patent: March 28, 2023
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventor: Eric Sachse
  • Patent number: 11592317
    Abstract: Method of determining a position of a sensor device relative to a magnetic source, includes: a) determining a first and a second magnetic field component at a first sensor location; b) determining a third and a fourth magnetic field component at a second sensor location; c) determining a first difference of the first and third component, and determining a second difference of the second and fourth component, and determining a first angle based on a ratio of the first and second difference; d) determining a first sum of the first and third component, and determining a second sum of the second and fourth component; e) determining a second angle based on a ratio of said first and second sum; f) comparing the first and second angle to detect error.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: February 28, 2023
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventors: Gael Close, Eric Lahaye, Lionel Tombez
  • Patent number: 11578997
    Abstract: A magnetic field angle sensor includes a coil configured to generate a magnetic field that induces an eddy current in a rotatable target, a first magnetic field sensing structure positioned proximate to the coil and configured to detect a reflected magnetic field generated by the eddy current induced in the target, a second magnetic field sensing structure positioned proximate to the coil and configured to detect the reflected magnetic field generated by the eddy current induced in the target, wherein the first and second magnetic field sensing structures are configured to detect quadrature components of the reflected magnetic field, and a processing module configured to process the reflected magnetic field detected by the first and second magnetic field sensing structures for determining an angular position of the target.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: February 14, 2023
    Assignee: Allegro MicroSystems, LLC
    Inventors: Hernán D. Romero, Octavio H. Alpago
  • Patent number: 11577598
    Abstract: A wheel support bearing assembly includes a wheel support bearing and a power unit. The power unit is that of an outer rotor design in which a stator is located at an outer periphery of the wheel support bearing and a rotor is located radially outward of the stator. A radial extension of the entire power unit is sized to be radially inward of a peripheral section of a brake rotor. An entirety of the power unit, excluding a mount part thereof to a hub flange, is sized to be situated in an axial range between the hub flange and a mount surface, on an inboard side of the wheel support bearing. The rotor includes an outer shell magnetic body, which is made from soft magnetic material and forms an outer shell of the power unit, and permanent magnets that are provided to the outer shell magnetic body.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: February 14, 2023
    Assignee: NTN CORPORATION
    Inventors: Mitsuo Kawamura, Kentaro Nishikawa, Taisuke Igi, Yuuji Yada, Yasuyuki Fujita, Hiroki Yabuta
  • Patent number: 11579211
    Abstract: A magnetic detection module is provided so as to be selectively mountable in any of housings having a plurality of specifications having different shapes or sizes of mounting portions, and detects magnetic flux generated in the housing. The magnetic detection module includes one or more magnetic sensors that detect magnetic flux, a case in which the magnetic sensors are housed, and a cap that can be attached to an end of the case and is provided with a sealing member. The magnetic detection module can be attached to the housing of the first specification with the cap not attached to the case, and can be attached to the housing of the second specification through a sealing member with the cap attached to the case.
    Type: Grant
    Filed: May 31, 2022
    Date of Patent: February 14, 2023
    Assignee: DENSO CORPORATION
    Inventors: Ken Tanaka, Toshiro Suzuki
  • Patent number: 11573103
    Abstract: An angle detector for detecting an amount of angular change due to the rotation of a rotary body. The angle detector is provided with a rotary body rotating around a rotation axis, a graduated scale having a plurality of graduations along the circumference of the rotary body in a rotation direction, and a plurality of sensors disposed along the circumference. Each of the sensors outputs a signal according to an amount of angular change on the basis of the plurality of graduations. The output signal includes a fundamental wave component having one of the plurality of graduations as a first period first order, and a harmonic wave component having an order that is an integer multiple of at least two times the fundamental wave component. An amount of angular displacement calculated from the output signal includes an angular error component that is due to the harmonic wave component and has an order component that is an integer multiple of the one graduation that is the first period first order.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: February 7, 2023
    Assignee: SANKYO SEISAKUSHO CO.
    Inventors: Kazuhisa Katsumata, Naoyuki Takahashi
  • Patent number: 11560860
    Abstract: The invention relates to a device and a processing method for a camshaft sensor (1) of the type comprising a toothed camshaft wheel (2) and an opposite sensing element (3) able to detect a tooth front, comprising the following steps: detection of a new tooth front (k) by said sensing element; calculation of a rotational speed (Wk) of the camshaft wheel (2) for the new tooth front (k); comparison with the rotational speed (Wk?1) of the camshaft wheel for the preceding tooth front (k?1) detected by said sensing element; if the variation in the rotational speed (Wk) of the camshaft wheel (2) between the new tooth front (k) and the preceding tooth front (k?1) is low, the new tooth front (k) is validated, otherwise the new tooth front (k) is rejected.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: January 24, 2023
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventor: Pierre Zouboff
  • Patent number: 11555686
    Abstract: A non-interdependent displacement measuring device for converting a rotary motion to a linear motion is disclosed, which includes a driving unit, a detection unit, and a resistance device. The driving unit includes an adjustment section and a driving section. The detection unit is arranged in the adjustment section. The driving section is connected to the resistance device. The detection unit includes a sensing module and a transmission module, and the detection unit is arranged in the adjustment section, so that when the adjustment section rotates, the detection unit detects turns and an angle of rotation of the adjustment section to generate a detection signal, which, after being subjected to calculation, is transmitted through the transmission module to the electronic device to display the level of an resistance, so as to overcome the drawbacks of the prior art that accuracy is poor, calibration is difficult, and fabrication is difficult due to a magnet and a sensor being arranged as two separate parts.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: January 17, 2023
    Assignee: BION INC.
    Inventor: Yu-Yu Chen
  • Patent number: 11525663
    Abstract: A rotation angle measurement system for detecting a rotation of a shaft. The rotation angle measurement system includes the shaft which extends in an axial direction, a rotor unit having a sensor magnet, a stationary stator unit having a multi-turn sensor unit which is arranged radially spaced apart from the shaft and which has a Wiegand sensor, and a magnetic shielding arrangement for the Wiegand sensor. The rotor unit is connected to the shaft to rotate therewith and radially surrounds the shaft. The multi-turn sensor unit functionally interacts with the sensor magnet to detect revolutions thereof. The magnetic shielding arrangement is made from a material having a high magnetic permeability. The magnetic shielding arrangement includes shielding elements which are arranged to surround the Wiegand sensor on a radial inside, on a radial outside, on a first axial side, and on a second axial side thereof.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: December 13, 2022
    Assignee: FRABA B.V.
    Inventors: Michael Loeken, Florian Hallermann, Hanno Volker
  • Patent number: 11513170
    Abstract: Apparatus and associated methods relate to measuring position and displacement of a 2D surface magnet array of at least three adjacent magnetic north and south tracks with an acute angle versus its motion displacement relative to a magnetic field sensor (e.g., magnetic sensing probe). In an illustrative example, the geometry of the 2D surface magnet array may be planar with adjacent and alternating north and south pole regions. In some embodiments, the 2D surface magnet array geometry may take the form of (1) an axial cylindrical helical multipole magnet array having individually magnetized layers that are oriented in helical shape, or (2) a radial disk spiral multipole magnet array with at least three adjacent north and south tracks oriented as a spiral shape.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: November 29, 2022
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Pascal Schweizer, Christopher Kenney, Richard Andrews
  • Patent number: 11506679
    Abstract: An encoder includes a base section, a spindle gear attached to a turning shaft section, a counter-shaft gear configured to mesh with the spindle gear and including a cylindrical gear section, a magnet provided in the counter-shaft gear, and an annular bearing member provided in the base section and configured to support the counter-shaft gear. When a straight line extending along the shaft section is represented as a first axis and a straight line orthogonal to the first axis is represented as a second axis, the magnet is disposed to overlap the bearing member in a plan view from a direction in which the second axis extends.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: November 22, 2022
    Inventor: Mitsuru Toyama
  • Patent number: 11506550
    Abstract: A device includes a first assist shaft having a first axially extending bore, the first assist shaft engaging, via the first axially extending bore, a first end of a torsion bar. The device may include a flux carrier engaged on an end of the first assist shaft proximate the torsion bar. The device may include a second assist shaft having a second axially extending bore, the second assist shaft engaging, via the second axially extending bore, a second end of the torsion bar and connected to the first assist shaft by the torsion bar. The device may include a permanent magnet ring having an inner circumference that receives an outer circumference of the second assist shaft and the permanent magnet ring disposed in a third axially extending bore of the flux carrier. The device may include a magnetic flux sensor at least partially disposed in the flux carrier.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: November 22, 2022
    Assignee: NEXTEER AUTOMOTIVE (SUZHOU) CO. LTD.
    Inventors: Keyi (Michael) He, Ying (Charles Yin) Weimin
  • Patent number: 11500014
    Abstract: Examples relate to a current sensor and to a method for sensing a strength of an electric current using two groups of magnetic sensing probes. The current sensor includes a first group and a second group of magnetic sensing probes. The current sensor comprises sensor circuitry coupled to the first and the second group of magnetic sensing probes. The sensor circuitry is configured to determine a first differential magnetic field measurement of a magnetic field using probes of the first group of magnetic sensing probes. The sensor circuitry is configured to determine a second differential magnetic field measurement of the magnetic field using probes of the second group of magnetic sensing probes. The sensor circuitry is configured to determine a strength of the electric current based on a difference between the first differential magnetic field measurement and the second differential magnetic field measurement.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: November 15, 2022
    Assignee: Infineon Technologies AG
    Inventors: Lifeng Guan, Wai Keung Frankie Chan, Adrian Gan
  • Patent number: 11493364
    Abstract: A sensor system for determining at least one rotation characteristic of an element rotating around at least one rotation axis. The sensor system includes at least one sensor wheel, which is connectable to the rotating element, the sensor wheel having a sensor wheel profile. The sensor system also includes at least one position sensor and at least one phase sensor. The sensor system further includes at least one digital interface and at least one incremental interface, the sensor system being configured to output at least one absolute position signal generated with the aid of the position sensor via the digital interface and to output at least one incremental signal generated with the aid of the phase sensor via the incremental interface.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: November 8, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Andre Yashan, Bernhard Opitz, Eduard Rolew, Fabian Utermoehlen
  • Patent number: 11480422
    Abstract: A method for estimating an angular deviation between a reference axis of a magnetic object and a magnetic axis co-linear to a magnetic moment of the magnetic object, including: a) positioning the magnetic object facing at least one magnetometer; b) rotating the magnetic object about the reference axis; c) measuring, during the rotating, the magnetic field, using the magnetomenter; and d) estimating the angular deviation from the magnetic field measurements.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: October 25, 2022
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Saifeddine Aloui, Franck Vial
  • Patent number: 11462972
    Abstract: Disclosed is a sensing apparatus, characterized in that: a first sensor unit comprises a first hall sensor and a second hall sensor, wherein the first hall sensor outputs two first output values having different phases from each other, and the second hall sensor outputs two second output values having different phases from each other; a second sensor unit outputs a third position detection value of a rotor; and a control unit compares one of the two first output values with one of the two second output values, compares the two first output values with each other, compares the two second output values with each other, compares a first position detection value of the rotor, which is on the basis of the first output values, with a second position detection value of the rotor, which is on the basis of the second output values, and compares at least one of the first position detection value of the rotor and the second position detection value of the rotor, with the third position detection value of the rotor outpu
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: October 4, 2022
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Won Kyu Kim
  • Patent number: 11448196
    Abstract: A bearing housing for use in a wind turbine is provided. Further, the bearing housing is axially coupled to a base support structure using plurality of fastening points on the bearing housing. The bearing housing may be coupled to the base support structure at multiple points so that the load is distributed evenly to the support structures such as base plate and the tower. The bearing housing is coupled to the base support structure using a fastener. The horizontal central axis of the bearing housing coincides with the horizontal central axis of the base support structure.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: September 20, 2022
    Inventor: Martin Moeskjaer
  • Patent number: 11442074
    Abstract: A magnetic sensor module includes an axially polarized back-bias magnet having a body that radially extends from a magnet center axis and a bore extending along the magnet center axis. The magnet generates a radial bias magnetic in-plane field about a magnetization axis in a sensor plane. The magnetic field has a magnetic flux density of substantially zero along the extension of the magnetization axis and at a perimeter of a zero-field closed loop located in the sensor plane. The magnetic sensor module includes a shim polepiece mechanically coupled to an end of the axially polarized back-bias magnet. The shim polepiece includes a second bore centered on a polepiece center axis that is aligned with the magnet center axis. The second bore extends through the shim polepiece along the polepiece center axis and is congruent with the first bore.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: September 13, 2022
    Inventor: Gernot Binder
  • Patent number: 11435455
    Abstract: A TOF ranging system based on a multi-phase correlation vector synthesis ranging method is presented. The method is a generalized expansion from conventional 2- or 4-phase correlations to arbitrary N-phase correlations in finding in-phase (I) and quadrature-phase (Q) signals of the reflected signal at the receiver, where N is an odd number greater than or equal to 3. The correlation vectors of the output of multi-phase correlators are processed by a zero-force synthesizer to produce optimal I and Q signals, from which the phase delay or ranging information is calculated. Embodiments disclose necessary components in realization of the method, such as half clock shifter, full clock shifter, dual edge reference pulse generator, and correlation integrator. The TOF ranging method enables the construction of finer and more accurate TOF systems like 3D imaging systems, 3D sonar imaging systems, or 3D touchless pointer systems.
    Type: Grant
    Filed: January 10, 2022
    Date of Patent: September 6, 2022
    Inventor: Chun Soo Park
  • Patent number: 11435717
    Abstract: A measuring device for a spindle or for a rotary table includes at least two first and second position sensing elements and a scale element, having a first and second graduations and being rotatable about an axis of rotation relative to the position sensing elements. The first graduation includes regular structures arranged in parallel next to one another along a first direction, having a directional component in the circumferential direction. The second graduation includes regular structures arranged in parallel next to one another along a second direction, having a directional component in the axial direction. The first position sensing elements are offset from one another in the circumferential direction, and are able to scan the first graduation so that the position of the scale element in a plane having an orthogonal orientation to the axis of rotation is determinable.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: September 6, 2022
    Assignee: DR. JOHANNES HEIDENHAIN GmbH
    Inventor: Johann Mitterreiter
  • Patent number: 11428703
    Abstract: A speed detection device includes a comparator module, a sensor lead with a node connected to the comparator module, and a limit set module. The limit set module is connected to the sensor lead node and to the comparator by an upper limit lead and a lower limit lead to provide upper and lower limits to the comparator that vary according to amplitude variation in voltage applied to the sensor lead.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: August 30, 2022
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Gary L. Hess, Kirk A. Lillestolen
  • Patent number: 11415435
    Abstract: An encoder and a signal processing method are disclosed. The method includes: receiving an analog signal, and generating a filtered analog signal by an analog filter according to the input signal and a first frequency indication signal; generating a digital signal by an analog-to-digital converter according to the filtered analog signal; generating a filtered digital signal by a digital filter according to the digital signal and a second frequency indication signal; generating a seventh signal and an eighth signal by a dynamic offset calibration unit according to the filtered digital signal and a period indication signal; and generating a position information by a position detection unit according to the seventh signal and the eighth signal. The first frequency indication signal, the second frequency indication signal and the period indication signal are generated by a frequency generation module according to the filtered analog signal or the digital signal.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: August 16, 2022
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Tsan-Huang Chen, Yu-Chen Lee, Chung-Lin Tseng, Jyun-Liang Lai, Yi-Ting Wang
  • Patent number: 11385042
    Abstract: A position detection device includes a magnetic detection element, a wiring, a first component and a second component as a first mold resin, a terminal, and a sensor cover as a second mold resin. The magnetic detection element can detect a change in magnetic field. The wiring is connected to the magnetic detection element. The first component and the second component mold the magnetic detection element and the wiring so that the wiring is exposed. The terminal is connected to the wiring. The sensor cover molds the first component, the second component and the terminal so that the first component and the second component where the magnetic detection element is located are exposed, and has a deformation suppressing portion. The deformation suppressing portion suppresses the deformation of the first component or the second component when the sensor cover is deformed.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: July 12, 2022
    Assignee: DENSO CORPORATION
    Inventors: Takuma Uchida, Takamitsu Kubota
  • Patent number: 11371824
    Abstract: The described techniques address the issues associated with conventional OoS sensor systems by mounting a magnetized ring onto a rotatable shaft for which an angular position is to be measured. Specific sensor configurations are disclosed regarding each magnetic sensor's position with respect to one another and each magnetic sensor's position with respect to the rotatable shaft. The described configurations provide a stray-field robust solution due to the specific magnetic sensor configurations such that, when stray fields are present, pairs of magnetic sensors are exposed to essentially the same stray field components, which thus cancel one another. Thus, the angle of the rotatable shaft as a function of the measured strength of the magnetic field components at any time instant can be calculated even in the present of stray magnetic fields.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: June 28, 2022
    Assignee: Infineon Technologies AG
    Inventors: Gernot Binder, Benjamin Kollmitzer, Peter Slama
  • Patent number: 11365764
    Abstract: A rolling bearing unit includes: an inner ring member having a recess on a first side in an axial direction along a rotation axis, which is recessed toward a second side in the axial direction; an outer ring member on an outer peripheral side of the inner ring member; a rolling body between the inner ring member and the outer ring member; a non-contact transmitter using electric field coupling capable of transmitting at least one of an electric power or a signal and including a stationary-side transmission part including a stationary-side electrode and a rotary-side transmission part including a rotary-side electrode facing the stationary-side electrode; and a covering member supported by the first side of the outer ring member in the axial direction, covering the first side of the inner ring member in the axial direction, and fixing the stationary-side transmission part to the first side in the axial direction.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: June 21, 2022
    Assignee: NSK LTD.
    Inventors: Daisuke Gunji, Hiroyasu Kumagai, Naohiro Hitomi, Ricardo Rodriguez Lopez
  • Patent number: 11359938
    Abstract: An exemplary encoder assembly includes a substrate, a first encoder, and a second encoder. The substrate has two or more position sensors, each position sensor being configured for detecting a rotary position of a shaft or other rotating element of a machine. The first encoder includes at least one first position sensor of the two or more position sensors. The at least one first position sensor is disposed on the substrate for off-axis alignment with the shaft or other rotating element of the machine. The second encoder includes a second position sensor of the two or more position sensors, the second position sensor being disposed on the substrate for on-axis or off-axis alignment with the shaft or other rotating element of the machine. Each position sensor is configured to detect different or common signal types, and a signal type of the second position sensor excludes optical signals.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: June 14, 2022
    Assignee: HARMONIC DRIVE SYSTEMS INC.
    Inventors: Brian Coyne, Yuki Katoh
  • Patent number: 11353526
    Abstract: A rotational angle detection device includes a magnet with n pole pairs (where n?3) provided to be integrally rotatable with a rotating body; magnetic detection parts including first and second magnetic detection parts; a corrected signal generation part generating first and second corrected signals; and a rotational angle detection part detecting the rotational angle of the rotating body based on the first and second corrected signals. The waveform of the first and second detection signals have a phase difference of 90° from each other. The corrected signal generation part adds the first sensor signals and adds the second sensor signals. The region at the perimeter of the magnet includes first through nth regions, and at least two of the first and second magnetic sensor parts are positioned in different regions from each other among the first through nth regions.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: June 7, 2022
    Assignee: TDK Corporation
    Inventors: Yosuke Antoku, Hiroyuki Hirano, Teiichiro Oka
  • Patent number: 11346686
    Abstract: A rotation detection device that detects a rotational speed of a rotating member by using a magnetic sensor, includes a detected member mounted to the rotating member, and a sensor section mounted to a stationary member not rotating with rotation of the rotating member. A through-hole that penetrates in a direction intersecting with a rotational axis of the rotating member is formed at the stationary member. The sensor section includes the magnetic sensors each including a detection section that includes a magnetism detection element and a cover covering the magnetism detection element, and a housing portion coating the magnetic sensors. The housing portion is inserted into the through-hole in the direction intersecting with the rotational axis. The detection sections are arranged at a position shifted from the rotational axis along the detected member in a direction intersecting with an inserting direction that inserts the housing portion into the through-hole.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: May 31, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Takashi Onimoto, Teruyoshi Shirota
  • Patent number: 11335185
    Abstract: Provided herein are examples of a remote control device that provides a retrofit solution for an existing switched control system. The remote control device may comprise a control circuit, a rotatable portion, a magnetic ring coupled to the rotatable portion, and first and second Hall-effect sensor circuits configured to generate respective first and second sensor control signals in response to magnetic fields generated by the magnetic elements. The control circuit may operate in a normal mode when the rotatable portion is being rotated, and in a reduced-power mode when the rotatable portion is not being rotated. The control circuit may disable the second Hall-effect sensor circuit in the reduced-power mode. The control circuit may detect movement of the rotatable portion in response to the first sensor control signal in the reduced-power mode and enable the second Hall-effect sensor circuit in response to detecting movement of the rotatable portion.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: May 17, 2022
    Assignee: Lutron Technology Company LLC
    Inventors: Matthew V. Harte, Jeffrey S. Hayes, Stephen M. Ludwig, Jr., Robert C. Newman, Jr., Jaykrishna A. Shukla
  • Patent number: 11320285
    Abstract: A magnetic sensor includes a magnetic field conversion unit, a magnetic field detection unit, and two shields. The magnetic field conversion unit includes a plurality of yokes. Each yoke is shaped to be long in a Y direction, and is configured to receive an input magnetic field and output an output magnetic field. The input magnetic field contains an input magnetic field component in a direction parallel to a Z direction, and a magnetic field component in a direction parallel to the Y direction. The output magnetic field contains an output magnetic field component in a direction parallel to an X direction. The magnetic field detection unit generates a detection value according to the output magnetic field component. Each shield has such a shape that its maximum dimension in the Y direction is smaller than its maximum dimension in the X direction.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: May 3, 2022
    Assignee: TDK CORPORATION
    Inventor: Keisuke Uchida
  • Patent number: 11303239
    Abstract: A magnetic pole initial position detection device includes: a direct-current excitation command generation section configured to generate a first command for causing a constant excitation current with a current phase fixed to a first phase to flow through the synchronous motor; a torque-zero determination section configured to determine whether a torque generated in the rotor of the synchronous motor is zero when the excitation current based on the first command flows through the synchronous motor; and a magnetic pole initial position acquisition section configured to acquire the magnetic pole initial position of the rotor of the synchronous motor on a basis of a rotor actual position at or near a point in time when the torque-zero determination section determines that the torque is zero; a number of pole pairs of the synchronous motor; and an excitation phase during direct-current excitation under the first command.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: April 12, 2022
    Assignee: Fanuc Corporation
    Inventors: Kenji Takahashi, Yuuki Morita
  • Patent number: 11300160
    Abstract: A bearing providing a first ring and a second ring capable of rotating concentrically relative to one another, at least one annular groove being formed on the second ring and oriented towards the first ring. The bearing further providing at least one target element engaged inside the groove of the second ring while being freely gliding inside the groove in the circumferential direction, the target element protruding into a hole formed on the first ring so that the target element is blocked in rotation by the first ring when the second ring rotates and the first ring is fixed, and at least one sensor mounted on the first ring and facing the target element to detect axial positions of the target element.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: April 12, 2022
    Assignee: Aktiebolaget SKF
    Inventor: Franck Landrieve