Rotary Patents (Class 324/207.25)
  • Patent number: 10337958
    Abstract: A vibration analysis method includes the steps of: inputting damage data of a rolling bearing; calculating, by a dynamics analysis program, a history of an exciting force occurring to the rolling bearing due to damage when a rotational shaft of the rolling bearing is rotated; calculating, by a mode analysis program, a vibration characteristics model of the bearing device; and calculating a vibration waveform at a predetermined position on the bearing device by applying to the vibration characteristics model the history of the exciting force calculated in the step of calculating a history of an exciting force.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: July 2, 2019
    Assignee: NTN CORPORATION
    Inventors: Tomoya Sakaguchi, Hideyuki Tsutsui
  • Patent number: 10309761
    Abstract: An angle sensor system includes a magnetic field generation unit for generating a rotating magnetic field, and an angle sensor for detecting the rotating magnetic field to generate a detected angle value. The rotating magnetic field contains first and second magnetic field components orthogonal to each other. Each of the first and second magnetic field components contains an ideal magnetic field component and an error magnetic field component. The error magnetic field component causes an angular error that varies with ½ the predetermined period. The angle sensor includes first and second detection signal generation units. Each of the first and second detection signal generation units includes a magnetic layer whose magnetization direction varies according to the direction of the rotating magnetic field. The magnetic layer is provided with a magnetic anisotropy that is set to reduce the angular error resulting from the error magnetic field component.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: June 4, 2019
    Assignee: TDK CORPORATION
    Inventors: Keisuke Uchida, Hiraku Hirabayashi
  • Patent number: 10310627
    Abstract: The invention provides an instrument control panel that is easily customized and reconfigured, and yet provides the familiar tactile sensation of physical knobs, sliders, and buttons. The instrument control panel comprises one or more interface components that are removably coupled to an interface display wherein the interface components communicate with one or more control components disposed behind the interface display. The present invention lends itself particularly well to an instrument panel.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: June 4, 2019
    Assignee: APPLIED MINDS, LLC
    Inventors: Bran Ferren, W. Daniel Hillis, Randall Adam Yates, Ira M. Lichtman, Clinton Blake Hope
  • Patent number: 10295373
    Abstract: A position sensor is disclosed for determining the number of repeating courses of movement of an object and of the precise position of the object in relation to a reference position. The position sensor is disclosed to include a Wiegand module, which is composed of a Wiegand wire having a coil that surrounds the Wiegand wire; a magnetic temporary storage, which is in addition to the Wiegand module; a first sensor element and a second sensor element; a processing electronic circuit, which is configured to evaluate or to determine an output signal that is output by the sensor elements and an information that is stored in the magnetic temporary storage; and a permanent magnet arrangement, which is movable relatively to the Wiegand module in one direction as well as in a direction that is opposite to said one direction.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: May 21, 2019
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: Walter Mehnert, Thomas Theil
  • Patent number: 10295372
    Abstract: A magnetic rotation detection apparatus which is capable of suppressing occurrence of assembly failure of components. A gear position sensor 10 is provided with a sensor unit 12 including a Hall element 20, a magnet shaft 11 including a magnet 17, a case 14 housing the sensor unit 12 and the magnet shaft 11, and an inner O-ring 24 sealing a gap between the sensor unit 12 and the case 14. The case 14 includes a metal bearing 19 to support the magnet shaft 11, and the magnet shaft 11 includes a molded portion 18 to fix the magnet 17. A thrust plate 22 is arranged between the molded portion 18 and a base plate 21 (circuit board) of the sensor unit 12, and a spring mechanism 26 is arranged to bias the molded portion 18 to the thrust plate 22. A minute gap is present between the metal bearing 19 and the magnet shaft 11.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: May 21, 2019
    Assignee: TOYO DENSO KABUSHIKI KAISHA
    Inventors: Shoji Kishi, Toshiya Yoshida
  • Patent number: 10288451
    Abstract: A rotation angle sensing device is provided with a magnet that has a component with a magnetization vector in a direction orthogonal to a rotary shaft, a magnetic sensor part that outputs a sensor signal, and a rotation angle sensing part that detects a rotation angle of a rotating body based upon the sensor signal; the magnet has first and second surfaces substantially orthogonal to the rotary shaft, and a concave side surface that is continuous throughout all circumferences in the circumferential direction; the magnetic sensor part is placed within the space surrounded by the concave side surface, and at a position where an amplitude of a magnetic field intensity Hr and an amplitude of a magnetic field intensity H? on the virtual plane are substantially identical to each other, and outputs either the magnetic field intensity Hr or the magnetic field intensity H? as the sensor signal.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: May 14, 2019
    Assignee: TDK Corporation
    Inventors: Masaki Nagata, Kazuya Watanabe
  • Patent number: 10288449
    Abstract: An embodiment relates to an angle sensor for detecting a rotational position of a shaft to which a magnetic field arrangement is attached, comprising: a first sensor element, a second sensor element, a support structure, wherein the first sensor element and the second sensor element are mechanically coupled to the support structure, wherein the support structure is arranged to be mechanically connected to a hull, wherein the hull at least partially encloses the shaft.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: May 14, 2019
    Assignee: Infineon Technologies AG
    Inventor: Udo Ausserlechner
  • Patent number: 10288452
    Abstract: A sensor for an encoder. The sensor includes a sensing circuit, an active setting module, an inactive setting module, and a sensor interface. The sensing circuit module is configured to generate an output signal related to a sensed characteristic. The active setting module includes a first pole width setting. The first pole width setting is associated with a first pole width for the encoder. The first pole width setting is accessible by the sensing circuit module. The inactive setting module includes second pole width setting. The second pole width setting is associated with a second pole width for the encoder. The second pole width setting is not accessible by the sensing circuit module. The sensor interface is configured for retrieving the second pole width setting from the inactive setting module and writing the second pole width setting to the active setting module.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: May 14, 2019
    Assignee: The Timken Company
    Inventor: John Santos
  • Patent number: 10251295
    Abstract: A first main body portion and a second main body portion of an electronic package are mounted on a mount portion of a support body, first metal projections are caused to enter first receiving recesses, and second metal projections are caused to enter second receiving recesses. When a clip member is mounted in the a first direction, the first metal projections are pressed by first pressing portions of the clip member, the second metal projections are pressed by second pressing portions of the clip member, and an elastic piece is pressed against a rear side of the support body. Thus, the electronic package is secured.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: April 2, 2019
    Assignee: ALPS ALPINE CO., LTD.
    Inventors: Ryosuke Suzuki, Keisuke Nakayama, Satoshi Waga, Yuji Kodama, Hisanao Takahara
  • Patent number: 10222234
    Abstract: A sensor device is provided with a magnetic field sensitive element being positioned in a magnetic field of a magnet. The magnet is positioned on an end face of a shaft. The magnetic field sensitive element is configured to sense an orientation angle of the magnetic field in the range between 0° and 360°. The shaft is one of a shaft of a transmission of a vehicle or a shaft of a brushless DC motor or a shaft of a wheel axle of a vehicle.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: March 5, 2019
    Assignee: Infineon Technologies AG
    Inventors: Dietmar Spitzer, Peter Slama, Harald Witschnig, Leo Aichriedler, Friedrich Rasbornig
  • Patent number: 10216559
    Abstract: Described embodiments provide circuits, systems and methods for detecting and communicating fault conditions. In an embodiment, an integrated circuit includes a fault detector to detect a fault condition of the integrated circuit and a controller to generate output data of the integrated circuit. An output generator generates an output signal of the integrated circuit. The output signal is generated at a first set of output levels based upon the output data when the fault detector does not detect the fault condition, and the output signal is generated at a second set of output levels based upon the output data when the fault detector detects the fault condition.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: February 26, 2019
    Assignee: Allegro MicroSystems, LLC
    Inventor: Devon Fernandez
  • Patent number: 10180443
    Abstract: The invention relates to a signal inducing device (1, 9, 11, 12, 18, 19, 20), comprising a first material (2, 3, 13, 14) and a second material (4, 16). The first material (2, 3, 13, 14) and the second material (4, 16) show a different magnetic behaviour. The first material (2, 3, 13, 14) and the second material (4, 16) are arranged in a way that the resulting magnetic behaviour of the signal inducing device (1, 9, 11, 12, 18, 19, 20) varies over a magnetic interaction surface (5, 10) of the signal inducing device (1, 9, 11, 12, 18, 19, 20). The signal inducing device (1, 9, 11, 12, 18, 19, 20) is designed in a way that the magnetic interaction surface (5, 10) shows an essentially smooth surface, in particular with respect to the standard moving direction of the magnetic interaction surface (5, 10).
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: January 15, 2019
    Assignee: Danfoss Power Solutions G.m.b.H. & Co. OHG
    Inventors: Momme Boldt, Markus Reimer, Howe Gripp, Bernd Hames
  • Patent number: 10168184
    Abstract: A system may include a magnet fixed to a rotatable object. The rotatable object may be positioned to concentrically rotate about an axis. The system may also include a magnetic angle sensor configured to determine a rotation angle of the rotatable object based on a rotating magnetic field produced by the magnet and sensed by the magnetic angle sensor. The rotating magnetic field may have a radial component and a tangential component, and the magnetic angle sensor may be positioned at a sensor position having a non-zero radial distance from the axis. At the sensor position, an amplitude of the radial component may substantially match an amplitude of the tangential component, or the radial component and the tangential component may share a substantially same gradient magnitude.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: January 1, 2019
    Assignee: Infineon Technologies AG
    Inventor: Llorenç Vallmajó I Ribas
  • Patent number: 10119838
    Abstract: The invention relates to a method for identifying the position of a rotor of an electric motor, in which method a target arranged on a rotor is sensed using a sensor. In a method which can be carried out cost-effectively and nevertheless delivers highly accurate sensor signals, a rotational movement of the rotor is detected using an inductive or a capacitive sensor.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: November 6, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Markus Dietrich, Jurgen Gerhart
  • Patent number: 10030963
    Abstract: A method for measuring a large shaft rotation angle utilizes one or more cams attached to the shaft. Each cam shape is designed to have one or more detectable harmonics when rotated. Multiple harmonics in a single cam or amongst multiple cams may have a particular order. Pairs of fine position sensors, positioned at opposing sense angle positions relative to the cam(s) measure displacement of the cam during rotation. The data from the position sensors is then analyzed, with a processor, to determine the large shaft rotation angle and angular displacement relative to an ideal axis of rotation.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: July 24, 2018
    Assignee: Raytheon Company
    Inventors: Morrison R. Lucas, John H. Steele
  • Patent number: 10024688
    Abstract: An angle detection device which includes multiple sensors to output multiple sinusoidal signals having different phases according to the rotation angle of a rotating body; a rotation calculation device to detect the rotation angle based on the multiple sinusoidal signals and detect an amplitude of the multiple sinusoidal signals to output the amplitude of the multiple sinusoidal signals as amplitude signal; and an amplitude comparison device to compare the amplitude signal with a predetermined amplitude target value and output an amplitude error signal indicating the comparison result; wherein the error of amplitude of the multiple sinusoidal signals is corrected by increasing or decreasing a drive input of a sensor driving unit based on the amplitude error signal.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: July 17, 2018
    Assignee: Ricoh Company, Ltd.
    Inventor: Fumihiro Shimizu
  • Patent number: 10006969
    Abstract: A sensor device is provided for suppressing a magnetic stray field, having a semiconductor body with a surface formed in an x-y plane, the x-direction and the y-direction are formed orthogonal to one another, and the sensor device has a first pixel cell and a second pixel cell integrated into the surface of the semiconductor body. A first magnetic field sensor detects a magnetic field in the x-direction and a second magnetic field sensor detects a magnetic field in the y-direction. The two pixel cells in a projection along an imaginary lengthening of the axis are arranged at an edge or next to an extension of the magnet in the x-y plane.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: June 26, 2018
    Assignee: TDK-Micronas GmbH
    Inventors: Timo Kaufmann, Joerg Franke
  • Patent number: 9964418
    Abstract: By configuring independently controlled clock signals to a plurality of sensors, preferably an angle sensor and a turn sensor, in communication with one another, a wider variety of sensors and sensor combinations can be used while still being able to synchronize output data of the sensors. Independently controlling clock signals of the sensors to selectively control the timing and portion(s) of data being communicated between the sensors enables data of the sensors to be merged, fused or otherwise combined using different types of sensors whose outputted data ordinarily cannot easily be combined.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: May 8, 2018
    Assignee: Joral LLC
    Inventor: Carl D. Schrubbe
  • Patent number: 9952248
    Abstract: The invention relates to a signal inducing device (1, 9, 11, 12, 18, 19, 20), comprising a first material (2, 3, 13, 14) and a second material (4, 16). The first material (2, 3, 13, 14) and the second material (4, 16) show a different magnetic behavior. The first material (2, 3, 13, 14) and the second material (4, 16) are arranged in a way that the resulting magnetic behavior of the signal inducing device (1, 9, 11, 12, 18, 19, 20) varies over a magnetic interaction surface (5, 10) of the signal inducing device (1, 9, 11, 12, 18, 19, 20). The signal inducing device (1, 9, 11, 12, 18, 19, 20) is designed in a way that the magnetic interaction surface (5, 10) shows an essentially smooth surface, in particular with respect to the standard moving direction of the magnetic interaction surface (5, 10).
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: April 24, 2018
    Assignee: Danfoss Power Solutions G.m.b.H. & Co. OHG
    Inventors: Momme Boldt, Markus Reimer, Howe Gripp, Bernd Hames
  • Patent number: 9944002
    Abstract: A position detector apparatus includes a detector part, wiring, a resin part, a resin body, a terminal, and a lead frame. The resin part has a thickness at a wiring side portion of the detector part that is greater than a thickness on a side opposite to the wiring side portion. Therefore, when injection-molding the resin part, due to a thickness change of the resin part, the detector part is pressed against a metal mold and a position of the detecting part is fixed. Further, the resin body has a thick-resin portion and a thin-resin portion. The thickness of the thin-resin portion allows a predetermined amount of dislocation of the detector part. Therefore, if the detector part is exposed, water is prevented from intruding the lead frame and the terminal.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: April 17, 2018
    Assignee: DENSO CORPORATION
    Inventors: Tomoyuki Takiguchi, Ninh Duc Hoang, Yoshiyuki Kono, Takehito Mizunuma
  • Patent number: 9938928
    Abstract: A cover has an aperture through which an accessory gains access to the interior side of the cover and a cavity. The accessory may be any kind of sensor or actuator. To secure the accessory to the cover, an adapter coupled to the cover is provided. In one example, the adapter has a cylindrical connection section that is spin welded into place in the cavity. In another example, the adapter has self-tapping threads that engage with the surface surrounding the cavity. The adapter also has tabs extending outwardly from the cover, the tabs having a proximate section and an engagement section. The accessory has a retaining orifice that couples with the tabs in a snap-fit relationship to secure the accessory to the cover.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: April 10, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Thomas Edward Smith, Frank Acierno Valencia
  • Patent number: 9923435
    Abstract: A production method for a rotor core for a VR type resolver has a structure in which one protrusion is formed on an inner edge thereof in which the rotor cores can be rotated and laminated without increasing cost. In a production method of a rotor core for a VR type resolver, a plurality of tabular rotor core pieces are laminated. In this case, in the rotor core pieces, four protrusions are simultaneously formed, one of them is left, the remainder thereof is removed, and rotating lamination is carried out.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: March 20, 2018
    Assignee: Minebea Co., Ltd.
    Inventor: Takaaki Ochiai
  • Patent number: 9897469
    Abstract: A resolver rotatably coupled to a rotatable member is described, including a method for evaluating an output signal therefrom. This includes supplying an excitation signal to the resolver and dynamically determining corresponding output signals from the resolver. A plurality of datasets are determined, with each dataset including digitized states of the excitation signal supplied to the resolver and corresponding output signals from the resolver. The digitized states of the excitation signal and the corresponding output signals from the resolver for each of the datasets are arithmetically combined, and a moving average thereof is determined. A phase shift error term is determined based upon the moving average, and a phase shift is determined between the excitation signal and the corresponding output signals based upon the phase shift error term.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: February 20, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Rachel L. Hoener, Yo Chan Son, Milan Ashok Vadera
  • Patent number: 9897466
    Abstract: A motor control system includes a shaft configured to be rotationally driven by a motor. A rotor position sensor is configured to detect rotation of the shaft and output a rotor position signal. A controller is in communication with the motor and the rotor position sensor. The controller converts the rotor position signal to an angle with error, tracks the angle with error to provide an angle that retains mechanical dynamics as stationary reference frame signals, transforms the stationary reference frame signals and the angle with mechanical dynamics to rotating reference frame signals, filters the rotating reference frame signals, transforms the filtered rotating reference frame signals to provide filtered stationary frame signals, and takes an arctangent of the filtered stationary reference frame signals to create a corrected motor control angle. The controller commands the motor based upon the corrected motor control angle.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: February 20, 2018
    Assignee: DELPHI TECHNOLOGIES, INC.
    Inventor: James E. Walters
  • Patent number: 9857199
    Abstract: A multi-turn angular position sensor includes a fixed magnet non-rotationally coupled to a fixed structure. A shaft is configured to rotate multiple complete rotations from a reference position, where each complete rotation front the reference position in a rotational direction defines a unique rotation zone of the shaft. Rotatable magnets surround the shaft and are disposed between the shaft magnet and the fixed magnet and are configured to rotate a different number of angular degrees than the shaft magnet. One of the rotatable magnets is a zone sensor magnet that rotates no more than one complete rotation from the reference position. A rotational zone sensor supplies a zone sensor output signal that indicates the unique rotation zone of the shaft. A shaft rotation sensor supplies a shaft rotation output signal representative of a number of angular degrees that the shaft rotates within each unique rotation zone.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: January 2, 2018
    Assignee: Honeywell International Inc.
    Inventors: Kumaran Sena Narasimhan, Gregory Furlong, Joel Stolfus
  • Patent number: 9846057
    Abstract: A method and apparatus for computing the angle (?) of rotation of a rotational-angle sensor apparatus (10) with a first Hall measuring plate (20) and a second Hall measuring plate (30) which are arranged orthogonally to each other.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: December 19, 2017
    Assignee: TDK—Micronas GmbH
    Inventor: Lothar Schmidt
  • Patent number: 9829345
    Abstract: A rotation detection apparatus includes a signal detector and a determination circuit. The signal detector outputs a first signal and a second signal based on changes in respective resistance values of magnetoresistive element pairs. The first signal has a waveform corresponding to convexities and concavities of a rotor, while the second signal has a waveform differing in phase from the first signal. Upon receiving the first signal and second signal, the determination circuit compares each of the first signal and second signal against a binarization threshold value to generate a first binarized signal and a second binarized signal. The determination circuit permits output of the first binarized signal during one of a concavity period and a convexity period of the second binarized signal, and prohibits output of the first binarized signal during the other one of the concavity period and convexity period.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: November 28, 2017
    Assignee: DENSO CORPORATION
    Inventors: Atsushi Kobayashi, Kenji Chikuan
  • Patent number: 9810551
    Abstract: Embodiments relate to magnetic field sensors, such as magnetic field angle sensors with generally on-axis arrangements of sensor elements relative to a rotation axis of a magnet or shaft. The shaft comprises or is coupled to an end portion that comprises a soft magnetic material, in embodiments, with the end portion having an end surface proximate the sensor that is rotationally asymmetric with respect to the rotation axis running through the length of the shaft. The sensor comprises at least three magnetic field sensing elements arranged in a plane generally perpendicular to the shaft and rotation axis. Circuitry forming part of or coupled to the sensor is configured to estimate a rotational position of the shaft by combining the signals of the at least three magnetic field sensing elements.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: November 7, 2017
    Assignee: Infineon Technologies AG
    Inventor: Udo Ausserlechner
  • Patent number: 9797746
    Abstract: Systems and methods for detecting a magnetic target include a plurality of magnetic field sensing elements arranged about a central point. Each one of the plurality of magnetic field sensing elements is configured to measure a magnetic field produced by a magnetic target and provide a respective output signal that represents a respective measurement of a strength of the magnetic field. A processor circuit is coupled to receive the output signal from each one of the plurality of magnetic field sensing elements and determine a barycenter of the measurements of the magnetic field based on a position of the magnetic field sensing elements.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: October 24, 2017
    Assignee: Allegro MicroSystems, LLC
    Inventors: Yannick Vuillermet, Andreas P. Friedrich, Andrea Foletto
  • Patent number: 9772201
    Abstract: A rotation angle detection device may include a magnetic detection member that is configured to detect a rotation angle of a rotation member, a holding member holding the magnetic detection member, and a plurality of wiring members for magnetic detection that are attached to the holding member and are connected to the magnetic detection member. The magnetic detection member has a flat plate-shaped body portion, and a plurality of lead terminals. The holding member holds the body portion of the magnetic detection member in a manner that the body portion can longitudinally slide relative to the holding member. The wiring members for magnetic detection respectively have lead terminal connecting portions. The lead terminals of the magnetic detection member are laid on the lead terminal connecting portions of the wiring members for magnetic detection and bonded thereto.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: September 26, 2017
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventor: Makoto Mase
  • Patent number: 9772200
    Abstract: A magnetically-based position sensor. The sensor includes a magnet, a first collector, a second collector, and a magnetic sensing element. The magnet has at least two poles, and moves along a path. The first collector has a first end and a second end and is configured to collect a magnetic flux. In addition, the first collector is positioned at an angle relative to an axis running parallel to the path and perpendicular to the magnet. The second collector is configured to collect a magnetic flux, and is positioned at an angle relative to the axis running parallel to the path and perpendicular to the magnet, and parallel to the first collector. The magnetic sensing element is coupled to the first and second collectors. A magnetic flux is collected by the first and second collectors, and varies as the magnet moves along the path such that the magnetic flux collected by the first and second collectors indicates a position of the magnet along the path.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 26, 2017
    Assignee: BOURNS, INC.
    Inventor: James Gregory Stanley
  • Patent number: 9766260
    Abstract: A sensor device for contactlessly determining a revolution rate and a direction of rotation of a component that rotates during operation of the component, the component having, on at least one peripheral region, a circumferential structure of web-shaped or tooth-shaped radial protrusions and interposed grooves or tooth gaps includes: a threaded segment configured to positionally fix an arrangement of the sensor device so that the circumferential structure of the component is movable past the sensor device; a magnetic field generating device; and a magnetic field detecting device having at least three magnetic field sensors that are not arranged in alignment along a line. A distance between the magnetic field sensors that are the farthest apart from each other is less than or equal to a width of the grooves or tooth gaps of the component.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: September 19, 2017
    Assignee: MAN Truck & Bus AG
    Inventors: Peter Kock, Günter Bücklers, Christoph Steinberg
  • Patent number: 9753097
    Abstract: A magnetic field sensor with a plurality of magnetic field sensing elements is provided herein. The magnetic field sensor includes a circular vertical Hall (CVH) sensing element comprising a plurality of vertical Hall elements arranged over a common implant and diffusion region in a substrate, wherein the plurality of vertical Hall elements is configured to generate a plurality of magnetic field signals, each magnetic field signal responsive to a magnetic field.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: September 5, 2017
    Assignee: Allegro Microsystems, LLC
    Inventor: Hernan D. Romero
  • Patent number: 9752919
    Abstract: Provided is a liquid level detection device which is configured so that an arm can be easily mounted to a holder after the holder is pivotably mounted using a cover and a main body portion. An end of a float arm is bent at a substantially right angle, and the end side of the float arm is defined as a first end portion. The portion of the float arm which is located closer to the center of the float arm than the first end portion is defined as a second end portion. A first arm mounting portion to which the first end portion is affixed and second arm mounting portions to which the second end portion is affixed are provided to a holder. A stopper for restricting the pivot range of the holder is provided to a main body portion. A first stopper which comes into contact with the stopper is provided to the holder. The first arm mounting portion and the first stopper are provided on a line passing through the pivot axis of the holder and perpendicular to the pivot axis.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: September 5, 2017
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Hiroyuki Iryo, Yoshiyuki Shimazaki
  • Patent number: 9752862
    Abstract: An accelerator opening degree detection device is equipped with: a rotor that is attached to the shaft of a handlebar and rotates in conjunction with the operation of an accelerator grip; magnets attached to the rotor; magnetic sensors that detect the magnetic force of the magnets; a case that houses the rotor and the magnetic sensors, and is attached to the handlebar; and a sensor holder to which the magnetic sensors are attached, and which is housed in the case on the opposite side of the rotor with respect to the accelerator grip. The sensor holder has an inner diameter protruding part that protrudes at a location opposing the magnets, this location being on the inside of the rotor in the circumferential direction, and the magnet sensors are arranged on the inner diameter protruding part.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: September 5, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yoshihiro Nomura, Yuichi Kawasaki, Isao Shokaku, Nobuo Shigemizu, Masaru Nakayama
  • Patent number: 9739640
    Abstract: Rotational angle sensor systems and methods are provided for detecting an angular position of a movable structure. A system may include a movable structure, a rotating member, a magnet and an angular sensor. The movable structure may be configured to rotate about an axis of rotation between a first rotational position and a second rotational position. A rotating member may be coupled to the movable structure and configured to rotate about the axis of rotation based on movement of the movable structure such that rotational positions of the rotating member and the movable structure correspond to one another. A magnet may have a magnetic field pattern with a magnetic field orientation and an angle sensor may be configured to detect the magnetic field pattern and generate one or more signals, based on the magnetic field orientation, corresponding to the rotational position of the movable structure.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: August 22, 2017
    Assignee: Infineon Technologies AG
    Inventors: Leo Aichriedler, Peter Slama
  • Patent number: 9709422
    Abstract: A rotation angle and stroke amount detection device includes a sensor unit, a rotation angle calculation unit, and a stroke amount calculation unit. The sensor unit includes sin and cos sensors which are magnetic sensing elements that detect changes in a magnetic field caused by rotation or linear displacement of a detection target. The sensor unit outputs sin and cos signals based on detection values of the sin and cos sensors. The rotation angle calculation unit calculates a rotation angle of the detection target based on the sin and cos signals output by the sensor unit. The stroke amount calculation unit calculates a stroke amount of the detection target based on the same signals as those used by the rotation angle calculation unit, i.e., the sin and cos signals. Accordingly, the configuration of the sensor unit may be simplified and the physical size of the device may be reduced.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: July 18, 2017
    Assignee: DENSO CORPORATION
    Inventors: Seiji Nishimoto, Akitoshi Mizutani
  • Patent number: 9702684
    Abstract: Provided is a rotation angle detection device, having a magnet installed on a valve shaft, which magnetically detects a rotation angle of a valve shaft, the device being configured to include a plate member having a predetermined thickness which is fastened and fixed to one end of the valve shaft, wherein the magnet is molded to the plate member into a cylindrical shape having a height larger than the predetermined thickness.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: July 11, 2017
    Assignee: KEIHIN CORPORATION
    Inventors: Kiyoshi Kaneko, Michio Onuma, Ryuichi Yaegashi
  • Patent number: 9689717
    Abstract: Phase estimation apparatus processes sensor signals from sensors to estimate a phase of a periodically varying state of an object, such as position of a moving object. A phase estimation processor applies a first correlation calculation to simultaneously collected samples of the sensor signals to generate first quadrature values, where the first correlation calculation employs variable calculation values, and applies a phase calculation to the first quadrature values to generate the phase estimation. A pre-quadrature calibration circuit applies respective second correlation calculations to respective sequences of samples of the sensor signals individually to generate second quadrature values for each of the sensor signals, and applies phase and/or magnitude calculations to the sets of second quadrature values to generate the variable calculation values for the first correlation calculation, thereby compensate for the error component and improve accuracy of the estimated phase.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: June 27, 2017
    Assignee: Novanta Corporation
    Inventors: Paul A. Remillard, Bruce A. Horwitz
  • Patent number: 9691534
    Abstract: In a magnetization device, while an annular magnetic body including plural rows of annular un-magnetized magnetic encoder tracks which are arranged adjacent to each other and integrated therewith is rotated, magnetization is performed, thereby providing a magnetic encoder. The magnetization device includes: a magnetizing yoke including a pair of opposed end portions opposed to each other across a magnetic gap; an exciting coil wound on the magnetizing yoke; a magnetization power source supplying a magnetizing current to the exciting coil to pass magnetic flux between the opposed end portions; and a magnetic shield which is provided to the magnetizing yoke and shields flow of the magnetic flux to the rows of magnetic encoder tracks other than a magnetization target.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: June 27, 2017
    Assignee: NTN CORPORATION
    Inventors: Toru Takahashi, Shintarou Ueno
  • Patent number: 9689711
    Abstract: A position detecting device includes a first sensor portion having a first mold resin object molded for a first magnetic sensor and a first wiring and a second sensor portion having a second mold resin object molded for a second magnetic sensor and a second wiring. The first sensor portion and the second sensor portion have a protrusion part defined between the first magnetic sensor of the first sensor portion and the second magnetic sensor of the second sensor portion to provide a clearance between the first magnetic sensor and the second magnetic sensor.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: June 27, 2017
    Assignee: DENSO CORPORATION
    Inventors: Takehito Mizunuma, Tomoyuki Takiguchi, Takamitsu Kubota, Yoshiyuki Kono
  • Patent number: 9692280
    Abstract: A production method for a rotor core for a VR type resolver has a structure in which one protrusion is formed on an inner edge thereof in which the rotor cores can be rotated and laminated without increasing cost. In a production method of a rotor core for a VR type resolver, a plurality of tabular rotor core pieces are laminated. In this case, in the rotor core pieces, four protrusions are simultaneously formed, one of them is left, the remainder thereof is removed, and rotating lamination is carried out.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: June 27, 2017
    Assignee: Minebea Co., Ltd.
    Inventor: Takaaki Ochiai
  • Patent number: 9678170
    Abstract: Embodiments related to the generation of magnetic bias fields for magnetic sensing are described and depicted. In one embodiment, a sensor includes at least one magnetosensitive element, and a magnetic body with an opening, the magnetic body comprising magnetic material magnetized mainly in a vertical direction, the magnetic body having inclined surface sections shaped by the opening, wherein the sensor is arranged atop the opening.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: June 13, 2017
    Assignee: Infineon Technologies AG
    Inventors: Tobias Werth, Klaus Elian, James Sterling
  • Patent number: 9678098
    Abstract: A non-ferrous shaft includes multiple non-integral ferrous tooth components, thereby allowing a sensor to detect the shaft speed.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: June 13, 2017
    Assignee: United Technologies Corporation
    Inventors: James Cosby, Peter V. Tomeo, Angel L. Santiago, Carney R. Anderson, Heriberto Rodriguez
  • Patent number: 9658050
    Abstract: In a rotation angle detection device, when a condition that two sensors among three magnetic sensors sense one and the same magnetic pole for three consecutive sampling periods is satisfied, a rotation angle is computed based on output signals from the two sensors, sampled at three sampling timings. When the output signals sampled at the three sampling timings satisfy a prescribed requirement, an angular width error correction value corresponding to the magnetic pole sensed by the two sensors and amplitudes are computed, and stored in association with the magnetic pole. If the condition is not satisfied, the rotation angle is computed based on the information stored in a memory and the output signals from two sensors among the three magnetic sensors, the two magnetic sensors including one of the three magnetic sensors, which detects the magnetic pole of which the angular width error correction value is stored in the memory.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: May 23, 2017
    Assignee: JTEKT CORPORATION
    Inventors: Takeshi Takaki, Yuji Kariatsumari, Yoshinobu Shimizu
  • Patent number: 9618364
    Abstract: An integrated wheel speed measuring device according to an exemplary embodiment of the present invention includes: a hub which is installed inside a wheel bearing; a magnetic encoder which is installed by being inserted into a recessed portion that is provided in one surface of the hub; and a wheel cap which surrounds the one surface of the hub and the recessed portion, in which the magnetic encoder has a cylindrical shape, and is installed in the recessed portion in a longitudinal direction thereof.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: April 11, 2017
    Assignee: HYUNDAI MOBIS CO., LTD.
    Inventor: Euisung Lee
  • Patent number: 9616708
    Abstract: A vehicle-wheel bearing device with a sensor of the present invention includes a plurality of sensors, mounted to a vehicle-wheel bearing, for detecting load thereon, and signal processor for processing an output signal therefrom to generate a signal vector, and load calculator for calculating load acting on a wheel based on the signal vector. The load calculator includes: a coefficient conversion processing unit for calculating an actual-state load estimation coefficient MC that is a load estimation coefficient for a state where the bearing is mounted to an actual vehicle, based on a standard load estimation coefficient MB that is a determined standard load estimation coefficient for the bearing; and a load calculation unit for calculating load on the wheel based on the signal vector and the actual-state load estimation coefficient MC calculated by the coefficient conversion processing unit.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: April 11, 2017
    Assignee: NTN CORPORATION
    Inventor: Toru Takahashi
  • Patent number: 9605974
    Abstract: In a rotation angle detecting device, a first magnetic sensor and a second magnetic sensor are disposed at an interval of an electrical angle of 120 degrees around a rotation center axis of a rotor. An output signal of the first magnetic sensor is expressed by V1=sin ?, and an output signal of the second magnetic sensor is expressed by V2=sin(?+120). A determination device determines whether both the magnetic sensors are normal, or there is a failure in at least one of the magnetic sensors, based on whether an expression of L?V12+V22+V1·V2?0.75?U is satisfied, where L is a lower limit and U is an upper limit.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: March 28, 2017
    Assignee: JTEKT CORPORATION
    Inventors: So Saito, Yuji Kariatsumari
  • Patent number: 9606196
    Abstract: The present disclosure provides for techniques to improve the sensitivity of magnetic sensor systems. One embodiment of a magnetic sensor system includes a magnetic biasing body comprised of a hard magnetic material and including a recess therein. The recess corresponds to a magnetic flux guidance surface of the magnetic biasing body. The magnetic sensor system also includes a magnetic sensing element arranged in or proximate to the recess. A magnetic flux concentrator, which is made of a soft magnetic material, is disposed in the recess between the magnetic flux guidance surface and the magnetic sensing element. Other techniques are also described.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: March 28, 2017
    Assignee: Infineon Technologies AG
    Inventor: Armin Satz
  • Patent number: 9605978
    Abstract: Embodiments relate to magnetic field angle sensing systems and methods.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: March 28, 2017
    Assignee: Infineon Technologies AG
    Inventors: Udo Ausserlechner, Mario Motz