Rotational Speed Patents (Class 702/145)
  • Patent number: 12145409
    Abstract: The present disclosure provides a method for monitoring a motion status of a vehicle, a related chip, and a system. The method includes: obtaining N acceleration values in a first axial direction collected from N times sampling and a maximum acceleration change value within a preset time period; and obtaining N acceleration values in a second axial direction collected from N times sampling and a maximum acceleration change value within the preset time period; determining whether the vehicle is in motion or in a first stationary state based on the acceleration values in the first and second axial direction; and in response to the vehicle being in the first stationary state, further determining whether the vehicle is in motion or in a second stationary state based on the maximum acceleration change values in the first and second axial direction.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: November 19, 2024
    Assignee: AUTOCHIPS WUHAN CO., LTD.
    Inventors: Tao Zhang, Senlin Li
  • Patent number: 12097769
    Abstract: An apparatus and a method for influencing electromagnetic forces of an electric traction motor, a higher-order harmonic (336) being superimposed on an actuating variable (udq) for the electric traction motor in a manner which is dependent on a rotational speed of the electric traction motor, a torque of the electric traction motor, a temperature at the electric traction motor, or a three-phase current or a three-phase voltage of the electric traction motor for the generation of a resulting actuating variable (uabc), the electric traction motor being actuated in a manner which is dependent on the resulting actuating variable (uabc), and the actuating variable (udq), the harmonic (336) and the resulting actuating variable (uabc) characterizing an actuating current or an actuating voltage.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: September 24, 2024
    Assignee: Dr. Ing. h.c. F. Porsche AG
    Inventors: Maximilian Barkow, Robert Nelles, Hugo Kock, Jan Naegelkraemer
  • Patent number: 12045034
    Abstract: The support device acquires locus information in which a position of a machine tool corresponding to an instruction value generated by execution of an NC program is associated with time information indicating a control time using the instruction value, and variable history information in which a value of a variable updated by execution of the sequence program is associated with time information indicating an update time The support device selects a target period in an execution period of a program, displays a portion corresponding to the target period in transition indicated by the locus information on a display device, and displays the value of the variable in the target period on the display device based on the variable history information.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: July 23, 2024
    Assignee: OMRON CORPORATION
    Inventor: Yutsuka Shigemori
  • Patent number: 11982547
    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: January 31, 2023
    Date of Patent: May 14, 2024
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventors: Gael Close, Eric Lahaye, Lionel Tombez
  • Patent number: 11958489
    Abstract: A tire force estimator includes a measuring unit configured to measure an acceleration of a vehicle body of a four-wheeled vehicle in a horizontal direction and an acceleration of at least one of four wheels of the four-wheeled vehicle in a vertical direction; and a processing unit configured to estimate a tire force acting on the at least one wheel from a ground surface in the vertical direction based on the acceleration of the vehicle body in the horizontal direction and the acceleration of the at least one wheel in the vertical direction.
    Type: Grant
    Filed: March 16, 2021
    Date of Patent: April 16, 2024
    Assignee: KAWASAKI MOTORS, LTD.
    Inventor: Takenori Terada
  • Patent number: 11932509
    Abstract: A conveyer includes: a supporting member which supports a roll body having a sheet wound therearound; a conveyance roller which conveys the sheet; a guide member; an urging member which urges the guide member; a sensor; and a controller. The controller is configured: to determine a target position of the guide member and a permissible position in accordance with the target position; to control a rotation amount of the supporting member and/or a rotation amount of the conveyance roller; to determine whether or not a position of the guide member exceeds the permissible position; and to perform a notification of a conveying error of the sheet.
    Type: Grant
    Filed: November 23, 2021
    Date of Patent: March 19, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuji Nishigaki, Teruhito Hasegawa, Yuri Morishita
  • Patent number: 11817700
    Abstract: A decentralized electrical power allocation system is provided. The system includes a power bus, electric power consumers, and at least two power source assemblies. Each power source assembly includes a power controller and a power source. Each power controller is configured to execute an adaptive droop control scheme so as to cause their respective power sources to output power to meet a power demand on the power bus applied by the power consumers. The power output of a given power source is controlled based at least in part on correlating a power feedback of the given power source with a droop function that represents an efficiency of the given power source to generate electrical power for a given power output. The droop functions are collaboratively defined so that one power source shares more output at lower power levels while another power source shares more output at higher power levels.
    Type: Grant
    Filed: July 20, 2022
    Date of Patent: November 14, 2023
    Assignee: General Electric Company
    Inventors: Honggang Wang, Sumit Bose, Hanchao Liu
  • Patent number: 11789843
    Abstract: A method of detecting an event and recording quantitative parameters associated with the event is provided. The method includes securing an event detection and recording system on a piece of equipment, the event detection and recording system comprising a plurality of sensors, an internal power source, and a microcontroller. The method further includes activating a low monitoring mode and measuring one or more quantitative parameters with the one or more of the sensors at a first sampling rate to generate low monitoring mode sensor data; analyzing the low monitoring mode sensor data to detect initiation of a triggering event; terminating the low monitoring mode upon detection of the triggering event; and activating a high monitoring mode including measuring and recording one or more quantitative parameters at a second sampling rate, where the second sampling rate is greater than the first sampling rate. The associated system is also provided.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: October 17, 2023
    Assignee: Cornerstone Research Group, Inc.
    Inventors: Mark Cridge, Trang T. Young, Matthew Benefiel, Mitchell Bauer, Gianfranco Trovato, Kristin M. Cable
  • Patent number: 11781887
    Abstract: A monitoring control device for diagnosing a presence/absence of a detection failure of a rotation state of a rotator includes: a rotation sensor that detects the rotation state of the rotator and outputs an analog signal in response to the detected rotation state; a converter that calculates a first absolute angle of the rotator at a first timing based on the analog signal and outputs a signal including the first absolute angle; a first control device 10 that obtains the first absolute angle; and a second control device 20 that calculates a second absolute angle of the rotator at a second timing different from the first timing based on the analog signal. The first control device 10 generates a first diagnostic signal based on the first absolute angle, and outputs the first diagnostic signal to the second control device.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: October 10, 2023
    Assignees: NISSAN MOTOR CO., LTD., RENAULT S.A.S.
    Inventor: Masanori Yamashita
  • Patent number: 11777423
    Abstract: A method for determining a movement of a rotor of an electric motor, comprises supplying a drive signal to a drive coil of the electric motor, sensing a coil current of the drive coil, detecting current ripples of the sensed coil current caused by the rotor of the electric motor crossing ripple generating positions, inferring the movement of the rotor from the detected ripples, braking the motor by reducing the drive signal supplied to the drive coil from an initial signal value to zero according to a braking curve specifying a non-zero fall time during which the drive signal is reduced from the initial signal value to zero. The braking curve is adapted so that the rotor does not cross a ripple generating position after the drive signal has been reduced to zero.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: October 3, 2023
    Assignee: Aptiv Technologies Limited
    Inventors: Mateusz Romaszko, Grzegorz Wyszynski, Piotr Maj
  • Patent number: 11747358
    Abstract: An angular velocity sensor includes a substrate, a detector including a movable detection electrode and a fixed detection electrode opposed to the movable detection electrode, and a driver adapted to drive the detector. The movable detection electrode is supported by a first spring that is elongated parallel to a Y axis from a first turned-back part, and a second spring that is elongated parallel to the Y axis from a second turned-back part. The first and second springs are fixed at first and second anchors. The first turned-back part is closer to the second spring than the first anchor. The detector includes a first surface opposed to the first spring, and a second surface disposed closer to the first spring than the first surface.
    Type: Grant
    Filed: May 12, 2022
    Date of Patent: September 5, 2023
    Inventors: Kazuyuki Nagata, Takayuki Kikuchi
  • Patent number: 11709241
    Abstract: A radar including an interface configured to receive a frequency estimation output and a synchronization signal correlation output from a radio communication device; and a processing block configured to use the received frequency estimation output and synchronization signal correlation output for velocity and range estimation.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: July 25, 2023
    Assignee: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
    Inventors: Markku Kiviranta, Ilkka Moilanen, Henna Paaso
  • Patent number: 11686256
    Abstract: Systems and method for synchrophasing aircraft engines are disclosed. One method comprises receiving data indicative of a sensed vibration level associated with a first aircraft engine and a second aircraft engine operating at a substantially same operating speed and commanding one or more momentary changes in operating speed of the second aircraft engine until the sensed vibration level substantially reaches a target vibration level. The momentary changes in operating speed of the second aircraft engine is commanded irrespective of phase information associated with imbalances of the first and second aircraft engines.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: June 27, 2023
    Assignee: BOMBARDIER INC.
    Inventors: Thineshan Kathirchelvan, Stephen Colavincenzo, Alexis Caron-L'Ecuyer
  • Patent number: 11476026
    Abstract: A propulsion system, comprising: a fan blade housing; a plurality of fan blades within the fan blade housing; one or more rows of permanent magnets, affixed to the outside of the fan blade housing; one or more fan blade bearings; one or more magnetic field generators affixed to the one or more fan blade bearings and corresponding to the one or more rows of permanent magnets, the magnetic field generators configured to cause the permanent magnets to be propelled forward in the same direction, thereby causing the fan blade housing to which they are attached, and the fan blades within, to spin.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: October 18, 2022
    Assignee: PARANETICS, INC.
    Inventors: Thomas A. Daniel, Larry G. Stambaugh
  • Patent number: 11422063
    Abstract: An apparatus for analyzing an element rotating at a rotational speed based on an vibration signal originating from the rotating element has: an analysis function processor for forming a plurality of analysis functions, the analysis function processor configured to form each analysis function based on an analysis frequency, on the vibration signal or on a measured or estimated rotational speed and on a predetermined order factor differing for each analysis function; a correlator configured to calculate a correlation result from the vibration signal and each analysis function, each correlation result being associated to the order factor which the analysis function, with which the correlation result was calculated, is based on, and the correlation results representing a correlation function; and an examiner configured for examining the correlation function or examining information derived from the correlation function so as to make a statement on a state of the rotating element.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: August 23, 2022
    Assignees: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Technische Universitaet Ilmenau
    Inventor: Peter Husar
  • Patent number: 11342867
    Abstract: A method for determining a movement of a rotor of an electric motor, comprises supplying a drive signal to a drive coil of the electric motor, sensing a coil current of the drive coil, detecting current ripples of the sensed coil current caused by the rotor of the electric motor crossing ripple generating positions, inferring the movement of the rotor from the detected ripples, braking the motor by reducing the drive signal supplied to the drive coil from an initial signal value to zero according to a braking curve specifying a non-zero fall time during which the drive signal is reduced from the initial signal value to zero. The braking curve is adapted so that the rotor does not cross a ripple generating position after the drive signal has been reduced to zero.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: May 24, 2022
    Assignee: APTIV TECHNOLOGIES LIMITED
    Inventors: Mateusz Romaszko, Grzegorz Wyszynski, Piotr Maj
  • Patent number: 11228820
    Abstract: Systems and techniques to facilitate generating and/or encoding rotational data associated with a mechanical element are presented. A sensor system can measure rotational speed data and phase data associated with a mechanical element that rotates. The sensor system can also encode the rotational speed data and phase data into a digital data packet. Furthermore, the sensor system can transmit the digital data packet associated with the rotational speed data and phase data to one or more sensor devices in communication with the sensor system.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: January 18, 2022
    Assignee: General Electric Company
    Inventors: Timothy Robert North, Tod Alexander Gilbert, Steven Bonnett
  • Patent number: 11205025
    Abstract: Gear motion of gearboxes can be calculated. A system includes a gear box, a sensor, and at least one data processor. The gear box includes a structure with a plurality of gears. The sensor is operatively coupled to the gear box and is configured to detect an operational parameter associated with a first gear of the gear box. The at least one data processor is configured to: receive, from the sensor, data characterizing the detected operational parameter associated with the gear box; generate a mesh pair matrix for the plurality of gears based on data characterizing the structure of the gear box; determine, from the mesh pair matrix, a calculated value of the operational parameter of the first gear of the plurality of gears; determine, based on the calculated value and the detected value of the operational parameter, an operational metric of the first gear; and provide the operational metric.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: December 21, 2021
    Assignee: BENTLY NEVADA, LLC
    Inventor: Nicholas Ryan Aboumrad
  • Patent number: 11183957
    Abstract: A motor control method is provided. The method includes: receiving a plurality of voltage control signals from a rotation speed controller to output a plurality of PWM signals; receiving the plurality of PWM signals to output three phase currents, so that a motor rotates; sensing three phase current values of the three phase currents; directly calculating a real rotor angle of the motor according to two of the three phase current values; and adjusting the plurality of the outputted voltage control signals according to an expected rotor speed and the calculated real rotor angle, so as to make the real rotor speed of the motor reach the expected rotor speed.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: November 23, 2021
    Assignee: Midastek Microelectronics Inc.
    Inventors: Ming-Hung Tsai, Chung-Ping Tan, Wei-Tien Chen
  • Patent number: 11177809
    Abstract: A motor control system includes a variable voltage supply in signal communication with a direct current (DC) motor. The DC motor includes a rotor induced to rotate in response to a drive current generated by a variable supply voltage delivered by the voltage supply. The rotation of the rotor generates a mechanical force that drives a component. A ripple count circuit is configured to filter the drive current based on a rotational speed (?) of the rotor, and to generate a pulsed output signal indicative of the rotational speed (?) of the rotor and a rotational position (?) of the rotor.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: November 16, 2021
    Assignee: INTEVA PRODUCTS FRANCE SAS
    Inventors: François Breynaert, Simon Herpin, Mohamed Benderradji
  • Patent number: 10976343
    Abstract: There is provided a sensor device that can easily reduce an accumulated error in a sensor, the sensor device including: a first inertial sensor; a first information code formed to be capable of being imaged from an outside; and a first imaging unit capable of imaging a second information code formed on another sensor device.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: April 13, 2021
    Assignee: SONY CORPORATION
    Inventors: Kosei Yamashita, Sho Murakoshi, Suguru Aoki
  • Patent number: 10900814
    Abstract: A magnetic sensor may detect a system-level error, associated with a sensor system that includes the magnetic sensor, based on one or more physical parameters as determined at the magnetic sensor. The magnetic sensor may provide an indication of the system-level error in an output signal. The one or more physical parameters may include a temperature at the magnetic sensor, a temperature drift of the magnetic sensor, a supply voltage at the magnetic sensor, an amount of humidity at the magnetic sensor, or an amount of pressure at the magnetic sensor.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: January 26, 2021
    Assignee: Infineon Technologies AG
    Inventor: Simon Hainz
  • Patent number: 10883538
    Abstract: A method to monitor a thrust load on a rolling bearing, obtaining a first parameter on the basis of at least a bearing cage rotation speed and of a first race rotation speed of a bearing, and subsequently obtaining a calculated thrust load on the basis of the first parameter and of the first race rotation speed.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: January 5, 2021
    Assignee: NUOVO PIGNONE TECNOLOGIE SRL
    Inventors: Marzia Sepe, Stefano Cioncolini, Riccardo Garbin
  • Patent number: 10870037
    Abstract: Systems and methods for motion capture and analysis are described. The system may include a motion sensor unit configured to capture data associated with movement of an object. The motion sensor unit is configured to be directly or indirectly coupled to the movement object at a first location. The system also includes a processor to process the captured data to determine one or more values and to translate the data and/or values to correspond to a second location on the movement object located away from the first location. The data and/or values, including translated data and/or values, may be transmitted by wireless transmitter and displayed by a display unit.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: December 22, 2020
    Inventor: Angelo Gregory Papadourakis
  • Patent number: 10823749
    Abstract: A vibration analyzer for use in determining a rotational speed. The vibration analyzer includes: a) an input for sensing vibration data, b) a memory for storing the vibrational data, and c) a processor. The processor 1) produces a spectral plot of the vibrational data, 2) locates peaks in the spectral plot, 3) inputs a rotational speed, and 4) scans the spectral plot in predetermined rotational speed increments to provide a candidate rotational speeds. For each candidate rotational speed i) a number of associated harmonics is identified, ii) closest peaks in the spectral plot to the candidate rotational speed and its harmonics are located, iii) gaps between the closest peaks and the candidate rotational speed and its harmonics are measured, iv) summed, and a sum of the gaps is recorded. In step (5) The candidate rotational speed that is associated with a minimum sum is selected as the nominal rotational speed.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: November 3, 2020
    Assignee: Computational Systems, Inc.
    Inventors: Anthony J. Hayzen, Stewart V. Bowers, III
  • Patent number: 10776616
    Abstract: A path and/or orientation of object approaching an athlete is tracked using two or more cameras. At least two sets of images of the object are obtained using at least two different cameras having different positions. Motion regions within images are identified, and candidate locations in 2D space of the object are identified within the motion region(s). Based thereon, a probable location in 3D space of the identifiable portion is identified, for each of a plurality of instants during which the object was approaching. A piecewise 3D trajectory of at least the identifiable portion of the object is approximated from the probable locations in 3D space of the object for multiple instants during which the object was approaching the athlete. A graphical representation of the 3D trajectory of the object is incorporated into at least one of the sets of images.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: September 15, 2020
    Assignee: SPORTSMEDIA TECHNOLOGY CORPORATION
    Inventor: James G. Painter
  • Patent number: 10697803
    Abstract: To reduce information used for processes of complementing a missing detection pulse of a magnetic field detecting section, the apparatus carries out the processes of storing, as rotation direction information of a movable section 43, “rightward direction”, “leftward direction”, “unidentified” and “unidentified inversion”, and setting the rotation direction information to “unidentified” when recognizing a missing detection pulse, and subsequently, adjusting a rotation change amount of the movable section using a first adjustment value if the rotation direction information becomes the “unidentified” and adjusting the rotation change amount of the movable section using a second adjustment value if the rotation direction information is updated from the “unidentified” to the “rightward direction” or the “leftward direction”.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: June 30, 2020
    Assignee: HIROSE ELECTRIC CO., LTD.
    Inventor: Atsushi Kasuga
  • Patent number: 10561344
    Abstract: Detection of a fall of a user wearing the device. A processor is configured to time sample and to input multiple values over time of: the acceleration vector, the angular velocity and the point-to-point distance. The processor is configured to determine over time the direction of gravity from the acceleration vector. The processor is configured to integrate over time the angular velocity to produce an orientation angle of the protection device relative to the direction of gravity. The processor, responsive to the point-to-point distance and the orientational angle, is configured to determine heights over time of the distance sensor from the ground. The processor is configured to indicate initiation of a potential fall event by a change in downward acceleration measured by the accelerometer or a rapid decrease in the determined heights of the distance sensor from the ground.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: February 18, 2020
    Assignee: Hip Hope Technologies Ltd.
    Inventors: Amatsia Raanan, Ran Manor
  • Patent number: 10434367
    Abstract: Systems and methods for motion capture and analysis are described. The system may include a motion sensor unit configured to capture data associated with movement of an object. The motion sensor unit is configured to be directly or indirectly coupled to the movement object at a first location. The system also includes a processor to process the captured data to determine one or more values and to translate the data and/or values to correspond to a second location on the movement object located away from the first location. The data and/or values, including translated data and/or values, may be transmitted by wireless transmitter and displayed by a display unit.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: October 8, 2019
    Inventor: Angelo Gregory Papadourakis
  • Patent number: 10173120
    Abstract: There is provided is a method and computer program product for selecting an appropriate golf ball for a subject by using a mobile computer device with a camera.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: January 8, 2019
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Andrew Troutner, Adam Rehberg
  • Patent number: 9705437
    Abstract: A method of determining the angular position (?) of a rotor of an N-phase permanent magnet motor (PMM) includes providing a processor having an associated memory, wherein the memory stores an angular position determination (APD) equation or hardware is included implementing the APD equation. The APD equation determines the angular position from N-phase measurements obtained from the stator windings associated with each of the N-phases. A voltage or a current is forced upon the stator terminals of the stator windings for each of the N-phases, a resulting stator current or stator voltage is sensed to provide the N-phase measurements responsive to the forcing of the voltage or current, and the APD equation is used to determine the angular position from the N-phase measurements.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: July 11, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Eric James Thomas, David Patrick Magee
  • Patent number: 9372481
    Abstract: An encoder includes a measurement target which is coupled to a motor, a module which is positioned relative to the measurement target and generates signals based on motion of the measurement target, and a control device which generates and outputs position data based on the signals from the module and includes a position detector, an abnormality detector, a cause analyzer, a non-volatile memory, and a non-volatile memory controller. The position detector detects a position of the motor, the abnormality detector detects an abnormality based on state information including a state of the position detector, the cause analyzer analyzes the state information when the abnormality detector detects the abnormality such that a cause of the abnormality detected by the abnormality detector is identified, and the non-volatile memory controller stores in the non-volatile memory a result of analysis obtained by the cause analyzer.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: June 21, 2016
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventor: Yasuhiro Matsutani
  • Patent number: 9356607
    Abstract: A controller unit includes a PI-controller for harmonic command variables. The transfer function of the PI-controller has a conjugate complex pole at a controller angular frequency ?r in the s-plane or a pole at e±j?rT in the z-plane, wherein T is the sampling time of a discrete input signal of the PI-controller and ?r is larger than 0. The controller angular frequency ?r is chosen equal to the resonance angular frequency ?0 of an oscillator. The controller parameters, are, for example determined by pole/zero compensation. The controller unit allows, for example, a broad band control of harmonic oscillators in rotation rate sensors.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: May 31, 2016
    Assignee: Northrop Grumman Litef GmbH
    Inventors: Günter Spahlinger, Markus Ruf
  • Patent number: 9267855
    Abstract: A method allowing the reliable and accurate calculation of the torque of a shaft using two phonic wheels and a sensor, the method including correlating the signal resulting from a rotation or one sixth of a rotation with the signal resulting from the subsequent rotation or one sixth of a rotation. The length of time between two passages of teeth is calculated by interpolating the cross-correlation function using least squares interpolation.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: February 23, 2016
    Assignee: SNECMA
    Inventors: Jean-Michel Ameil, Thierry Brichler
  • Patent number: 9121714
    Abstract: A user-heading determining system (10) for pedestrian use includes a multiple-axis accelerometer (110) having acceleration sensors; a device-heading sensor circuit (115) physically situated in a fixed relationship to the accelerometer (110); an electronic circuit (100) operable to generate signals representing components of acceleration sensed by the accelerometer (110) sensors, and to electronically process at least some part of the signals to produce an estimation of attitude of a user motion with respect to the accelerometer, and further to combine the attitude estimation (750, ?) with a device heading estimation (770, ?) responsive to the device-heading sensor circuit, to produce a user heading estimation (780); and an electronic display (190) responsive to the electronic circuit (100) to display information at least in part based on the user heading estimation. Other systems, circuits and processes are also disclosed.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: September 1, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jayawardan Janardhanan, Goutam Dutta, Varun Tripuraneni
  • Patent number: 9109894
    Abstract: The invention relates to integrated circuits, and more particularly, to systems, devices and methods of integrating a gyro sensing circuit with a gyroscope to detect a shock or a disturbance, and accurately differentiate rotation-based sense signals from noises introduced by the shock or disturbance. The gyro sensing circuit may be implemented in a differential or non-differential demodulation scheme, and comprises at least one demodulation unit and a peak detector. The at least one demodulation unit demodulates a gyro output signal provided by the gyroscope with a reference signal. In a demodulated gyro output signal, a shock signal or a gyro disturbance signal is substantially isolated out from interested gyro sense signals that are used to sense a rate of rotation. A peak detector samples the modulated gyro output signal, determines whether the signal exceeds a threshold level VTH and outputs a shock flag indicating a corresponding determination result.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: August 18, 2015
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Massimiliano Forliti, Christian Rosadini
  • Publication number: 20150149111
    Abstract: A computer-implemented method for determining rotational rate of a computer system programmed to perform the method includes determining in a physical perturbation sensor in the computer system, a plurality of instantaneous field measurements with respect to a reference field, at a first time and a second time, determining in the computer system, a plurality of rates of change associated with the physical perturbation sensor in response to the plurality of instantaneous field measurements at the first time and the second time, determining in the computer system, an plurality of estimated rotational rates for the computer system in response to the plurality of rates of change, and performing in the computer system, an operation in response to the plurality of estimated rotational rates.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 28, 2015
    Inventor: Joseph M. KELLY
  • Patent number: 9008903
    Abstract: The present disclosure presents a wheel diameter variation-detecting device capable of properly detecting relative variation in diameter between a plurality of wheels of a vehicle. The wheel diameter variation-detecting device can detect variation in diameter between a plurality of wheels of a vehicle, can detect rotational speeds of the respective wheels, and can calculate a variation parameter indicative of variation in diameter between the wheels using one of the wheels as a reference wheel, based on a result of comparison between the rotational speed of the reference wheel and that of one of the wheels other than the reference wheel. Further, the wheel diameter variation-detecting device can learn the variation parameter based on a value obtained by averaging a plurality of values of the variation parameter obtained before the detected travelled distance reaches a predetermined distance.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: April 14, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takeshi Kurata, Takahiro Eguchi, Shuichi Fujimoto, Hirohiko Totsuka
  • Patent number: 9008997
    Abstract: Vibration analysis is performed on a machine having a variable frequency drive by using a tachometer to monitor rotational speed of the drive shaft and a logic device to calculate speed parameters associated with the drive shaft using the tachometer data. The speed parameters include a maximum speed, a minimum speed, and an average speed of the drive shaft. By correlating the vibration spectra of the motor drive with the speed parameters, machine faults can be identified based upon the energy distribution in the spectra. Further, vibration waveforms from two or more locations on the machine can be sequentially acquired through synchronous triggering by using a pulse edge of a stable tachometer signal. The waveforms can be compared to determine a phase difference to help in identifying any machine faults that may be present.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: April 14, 2015
    Assignee: Fluke Corporation
    Inventors: Ramesh B. Srinivasa, Nidhin A. Jose
  • Patent number: 8990044
    Abstract: A revolution counter including sensors, which generate position values that define an angular position of a shaft, and a determination unit that receives the position values and generates decision signals therefrom, wherein the decision signals determine counting sectors. The revolution counter includes a counting control unit that receives the counting sectors, and operates the revolution counter in a first mode or a second mode of operation. The counting control unit switches over to the second mode, if after a length of time no change in one of the counting sectors takes place, and switches over to the first mode if a change in one of the counting sectors does take place. The determination unit determines an uncertainty range between each pairing of the counting sectors. The counting control unit does not take the uncertainty ranges into account for the switchover from the second mode to the first mode.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: March 24, 2015
    Assignee: Dr. Johannes Heidenhain GmbH
    Inventor: Johann Oberhauser
  • Patent number: 8983792
    Abstract: An indoor testing device for multiple rotor-containing flying objects including a main support having a plurality of linking members, a plurality of mechanical arms, a plurality of trays, and control units of the mechanical arms. The main support is disposed vertically. The mechanical arms are separately disposed on the linking members of the main support with different height. The trays are separately disposed on one end of the mechanical arms for receiving rotor-containing flying objects, and the control units are disposed on the mechanical arms and rotate therewith. The device can be used for the cooperation and coordination test of multiple rotor-containing flying objects and autonomous control experiments of a single rotor-containing flying object. The tests have high stimulation and improve the usability of the experimental results in the actual system.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: March 17, 2015
    Assignee: Shenyang Institute of Automation of the Chinese Academy of Sciences
    Inventors: Jianda Han, Yuqing He, Feng Gu, Zheng Wang
  • Patent number: 8949070
    Abstract: A method or apparatus for monitoring human activity using an inertial sensor is described. The method includes monitoring accelerations, and identifying a current user activity from a plurality of user activities based on the accelerations. In one embodiment, each of the plurality of user activities is associated with one of a plurality of types of periodic human motions that are detectable by the portable electronic device, and wherein the identification of the current user activity is made based on detecting two or more instances of the periodic human motion associated with the user activity. The method further includes counting periodic human motions appropriate to the current user activity.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: February 3, 2015
    Assignee: DP Technologies, Inc.
    Inventors: Philippe Richard Kahn, Arthur Kinsolving, Mark Andrew Christensen, Brian Y. Lee, David Vogel
  • Patent number: 8947037
    Abstract: A method for estimating a torque of a three-phase motor for a vehicle includes measuring a respective current strength in at least two of three phase lines, wherein the three-phase motor is supplied with power by a converter, and wherein the three phase lines lead from the converter to the three-phase motor of the vehicle, measuring a respective voltage at each of the three phase lines, determining a rotating field frequency as a function of the measured current strengths or the measured voltages; and determining an estimated value for the torque as a function of the measured current strengths, the measured voltages and the determined rotating field frequency.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: February 3, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Enrico Fuchs, Thomas Götze, Steffen Hellmich, Hans-Georg Köpken, Stefan Völkel
  • Publication number: 20150025836
    Abstract: A rough road determination device (100) is mounted on a vehicle (1) that is equipped with an internal combustion engine (10) having a crank angle sensor (31). This rough road determination device is equipped with determination means (20) for determining whether or not a road on which the vehicle travels is a rough road, by comparing a first amplitude fluctuation amount as an amplitude fluctuation amount of one pulse of an output of the crank angle sensor, which is determined in advance on the basis of a rotational speed of the internal combustion engine, with a second amplitude fluctuation amount as an amplitude fluctuation amount of one pulse that is actually output from the crank angle sensor.
    Type: Application
    Filed: March 28, 2012
    Publication date: January 22, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryo Hasegawa, Yukitoshi Aoyama, Junichi Murase, Daisuke Hayashi
  • Publication number: 20150012240
    Abstract: An inertial sensor is attached to a sporting gear held by the hand (for example, a golf club). A static state determination unit determines a static state of at least one of the sporting gear and a subject, using an output from the inertial sensor. A notification signal generation unit outputs a static state notification signal according to the static state. The static state notification signal can induce a certain physical change perceived by the subject with the five senses. In response to the physical change, the subject can start a swing movement.
    Type: Application
    Filed: June 19, 2014
    Publication date: January 8, 2015
    Inventor: Masafumi SATO
  • Patent number: 8930161
    Abstract: Disclosed herein are an apparatus and a method for diagnosing a fault of a multi-sensor of a motor. The apparatus includes: a plurality of tachometers attached to the motor to measure rotation speeds; and a plurality of processors each connected directly to the plurality of tachometers to receive the measured rotation speeds, thereby securing a plurality of directly obtained rotation speeds, sharing the obtained rotation speeds with each other, thereby obtaining a plurality of indirectly obtained rotation speeds, and performing a fault diagnosis on the plurality of tachometers using the plurality of directly obtained rotation speeds and the plurality of indirectly obtained rotation speeds.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: January 6, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jin Wook Baek, Changsung Sean Kim, Han Kyung Bae
  • Patent number: 8908823
    Abstract: A digital period divider has a first counter with R least significant bits (LSB) and P most significant bits (MSB) having a count input and a reset input, wherein the count input receives a first clock signal and the reset input receives a second clock signal; a latch having P bits and being coupled with the P bits of the first counter; a second counter having P bits and a count input and a reset input, wherein the count input receives the first clock signal; and a first comparator operable to compare the P bits of the latch with the P bits of the second counter and generating an output signal, wherein the output signal is also fed to the reset input of the second counter.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: December 9, 2014
    Assignee: Microchip Technology Incorporated
    Inventors: Joseph Julicher, Kevin Kilzer, Cobus Van Eeden
  • Patent number: 8909499
    Abstract: A data processor and method for processing position-related input data from a rotational machine whose angular speed is variable and providing output data at an output data rate. The processor comprises a time-based over-sampler for over-sampling the input data at an over-sampling rate greater than the output data rate, and a down-sampler for extracting samples of over-sampled data from the over-sampler at the output data rate so as to provide the output data. The down-sampler is responsive to an angular timing signal related to an angular position of the machine for selecting the samples of over-sampled data to extract based on the angular position. Application to a rotational machine whose angular speed is variable, in particular to an internal combustion engine to control engine operating parameters as a function of cylinder pressure.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: December 9, 2014
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Mike Garrard, Geoff Emerson, Alistair Robertson
  • Publication number: 20140358474
    Abstract: Deriving a clean timing signal from a waveform is disclosed. A sensor-of-interest (SOI) sample set and a waveform sample set that correspond to the SOI sample set in time is collected. The waveform sample set is partitioned into a plurality of waveform sample subsets, and the SOI sample set is partitioned into a plurality of SOI sample subsets, each SOI sample subset corresponding to one of the plurality of waveform sample subsets. A plurality of waveform sample subset angular speeds is determined, wherein each waveform sample subset angular speed corresponds to a different waveform sample subset. An aggregate mean angular speed based on the plurality of waveform sample subset angular speeds is determined. Each SOI sample subset is resampled to the aggregate mean angular speed based on the corresponding waveform sample subset angular speed to generate a plurality of resampled SOI subsets.
    Type: Application
    Filed: May 22, 2014
    Publication date: December 4, 2014
    Applicant: Lockheed Martin Corporation
    Inventors: Richard M. Hall, Sreerupa Das
  • Patent number: 8903678
    Abstract: A sensing device with lower power consumption by controlling a rate for generating output data is to be provided. A sensing device includes: a sensor module including a group of sensors, at least one of which is set as a motion sensor; and a data generating unit that generates output data on the basis of outputs from the group of sensors. The data generating unit switches, on the basis of an output from the motion sensor, a rate for generating the output data.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: December 2, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Taketo Chino