Bearing, Gear, Or Related Moving Mechanism Patents (Class 73/593)
  • Patent number: 11391199
    Abstract: A method of monitoring a turbocharger system makes use of vibrational behaviour to predict potential future failure modes. Changes in sub-synchronous vibrational behaviour of the turbocharger assembly may be used to distinguish between failure modes such as wear and coking. Rate of change of sub-synchronous vibrational behaviour may be used to predict time before likely failure. Also disclosed is a turbocharger system configured to perform the method.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: July 19, 2022
    Assignee: Perkins Engines Company Limited
    Inventors: David Wilkinson, Prabhu Ramasamy
  • Patent number: 11378490
    Abstract: A transmission shaft assembly for use in a sequential test of flexible thin-walled bearings includes a power connecting member, a clamping device and a plurality of bearing mounting kits. The bearing mounting kits are located between the power connecting member and the clamping device. The clamping device penetrates a central bore of each of the bearing mounting kits and is connected to the power connecting member. The power connecting member, the clamping device and the bearing mounting kits are connected into one piece. The power connecting member includes a spindle shank and a blind rivet. The bearing mounting kit includes a bearing mounting sleeve seat, a rear retaining ring, a front retaining ring, a bearing locking bolt and a tightening nut. The clamping device includes a clamping bolt, a washer and a spring washer.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: July 5, 2022
    Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Weiguang Li, Zhen Li, Xin Lin, Hui Chen
  • Patent number: 11280699
    Abstract: A flaking development analysis method and a flaking development analysis device for a raceway ring of a rolling bearing which make it possible to, after fine flaking occurs, predict a relationship between an elapsed time and a shape of a flaked portion based on a development speed of the flaking, and perform bearing replacement at an appropriate timing.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: March 22, 2022
    Assignee: NSK LTD.
    Inventors: Kang Zhou, Taketoshi Chifu, Hiroki Mizokuchi
  • Patent number: 11241693
    Abstract: A system and method for online estimate of the filling level of balls and loading level in a rotary mills, comprising a set of vibration sensors unit, associated with a magnet to transmit data signals via an antenna to a receiver that receives data signals from the antenna, an antenna, wherein the receiver is connected via optical fiber to a signal processor, which in turn communicates to a control server via a UTP cable, wherein the control server also obtains data from the mill operation to determine the best filling of balls and load; and the operating method.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: February 8, 2022
    Assignees: Netos S.A., Universidad Tecnica Federico Santa Maria
    Inventors: Hernan Ariel Robles Opazo, Tania Alejandra Ledezma Torres, Javier Alberto Inostroza Inostroza, Jorge Antonio Pontt Olivares, Waldo Marcelo Valderrama Reyes, Juan Yianatos Bernardino, Luis Eduardo Vinnett Peralta
  • Patent number: 11131537
    Abstract: A measurement method using an inductive proximity sensor connected to a cable, the measurement method including the following steps: applying to the cable an excitation voltage at a known reference frequency; acquiring a measurement voltage representative of the excitation current that flows in the cable and in the sensor under the effect of the excitation voltage; multiplying the measurement voltage both by a first reference signal in order to obtain a first measurement signal and also by a second reference signal in order to obtain a second measurement signal; using the first measurement signal and the second measurement signal to evaluate a measurement impedance representative of the impedance of the sensor and of the cable; using the measurement impedance to estimate the inductance of the sensor or the impedance of the sensor; and comparing the inductance of the sensor or the impedance of the sensor with a predefined detection threshold in order to obtain proximity information.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: September 28, 2021
    Assignee: SAFRAN ELECTRONICS & DEFENSE
    Inventors: Frédéric Bocage, Thierry Nouel De Kerangue
  • Patent number: 11111032
    Abstract: A method for monitoring the health of a rotating machine mounted on a vehicle is disclosed. The method may include: receiving identifying information of the vehicle, the rotating machine, and a portable vibration sensor mounted on the rotating machine; receiving vibration data from the portable vibration sensor during a test of the rotating machine, the received vibration data being associated with the identifying information of the vehicle, the rotating machine, and the portable vibration sensor; comparing the received vibration data with known vibration data for the rotating machine; generating an alert if the received vibration data exceeds a predetermined threshold value of the known vibration data; generating a health report for the rotating machine based on the received vibration data; and transmitting the health report to a user via a web portal.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: September 7, 2021
    Assignee: Honeywell International Inc.
    Inventors: Norman Cornelius Clampitt, III, Mohit Singhai, Thomas Mark MacRunnel, Aerwin Perez, Kelsey Keberle
  • Patent number: 11105712
    Abstract: A method for fault diagnosis of a bearing includes detecting, using an oil debris monitor (ODM) sensor, ODM data corresponding to an amount of debris flowing downstream from the bearing. The method also includes detecting, using a vibration sensor, vibration data corresponding to vibration of the bearing during use. The method also includes determining, by a controller, a vibration stage flag corresponding to a severity of damage of the bearing based on the vibration data. The method also includes determining, by the controller, a severity level of the damage of the bearing based on a combination of the vibration stage flag and the ODM data. The method also includes outputting, by an output device, the severity level.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: August 31, 2021
    Assignee: Raytheon Technologies Corporation
    Inventors: Yan Chen, Danbing Seto, Sheridon Everette Haye, Allan J. Volponi, Zaffir A. Chaudhry, Gregory S. Hagen, Lichu Zhao, Robert H. Luppold
  • Patent number: 11085489
    Abstract: This invention relates to a bearing monitoring method and system suitable for the monitoring of faults in rolling element bearings. The method and system utilize an acceleration sensor that is sensitive to both acceleration and housing strain and which has the effect of amplifying acceleration events that coincide with areas of the housing strain signal that correspond to bearing ball-pass events. The housing strain signal due to ball-pass events can be used to synchronise or otherwise modify the sampling of acceleration signals, or to determine bearing performance characteristics.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: August 10, 2021
    Inventor: Iain Kenton Epps
  • Patent number: 11067496
    Abstract: A new system is described that is able to detect mechanical failures in a rotating shaft or shafts such as those which may be found in an aircraft or other mechanical device or vehicle. The system comprises a first accelerometer provided on the rotating shaft to be monitored and a reference accelerometer provided elsewhere. The system can compensate information received from these accelerometers so as to determine a fault in the rotating shaft that is being monitored.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: July 20, 2021
    Assignee: GOODRICH ACTUATION SYSTEMS LIMITED
    Inventors: Fabien Dubois, Laura Albiol-Tendillo, Daniel Diaz-Lopez
  • Patent number: 11060902
    Abstract: An abnormality treatment apparatus includes: a sensor which outputs a signal upon detecting an event caused by contact of a rotor of a rotating machine during rotation of the rotor; and a control unit which executes at least one of rotation number control of reducing the number of rotations of the rotor step by step, liquid injection control of injecting liquid into a housing chamber of the rotor step by step, and pressure control of lowering a discharge pressure of the rotating machine step by step based on reception of the signal output from the sensor.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: July 13, 2021
    Assignee: Kobe Steel, Ltd.
    Inventors: Shugo Takaki, Yoshinori Kurioka, Yasuharu Matsumoto, Eiji Takahashi, Kaname Araki
  • Patent number: 11054337
    Abstract: A method and a device for carrying out a method for conducting vibration-diagnostic monitoring and assessment of individual machine parts (M1, . . . Mn) of a machine (M), preferably a rotating machine, using a frequency analyzer.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: July 6, 2021
    Assignee: Fibro GmbH
    Inventor: Markus Knaup
  • Patent number: 11010568
    Abstract: Provided is a method for detecting an incipient damage in a bearing including receiving from a plurality of sensors of the bearing a plurality of signals corresponding to a plurality of bursts, each burst being emitted each time an indentation is met during the rotation of the bearing at a contact point between a roller of the bearing and a race of the bearing, analyzing the signals for locating on the bearing the indentations corresponding to the bursts, generating a map of points on a digital model of the bearing corresponding to the indentations on the bearing, the map of points being registered and updated throughout at least an interval of the lifetime of the bearing, identifying an incipient damage in the bearing each time the distribution of the points in the map is not random, and generating an incipient damage warning message.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: May 18, 2021
    Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/S
    Inventor: Mikkel Wilki Thygesen
  • Patent number: 10920899
    Abstract: An electronic controller of a valve actuator predictively calculates motor inputs that will cause the actuator to apply desired forces or torques to a valve. A force/torque sensor of the actuator measures applied force or torque at the motor output and/or valve to verify the applied force or torque and enable updating of calibration settings as needed. Upon failure of the force/torque sensor, embodiments continue predictive operation without sensor verification or calibration updates. Upon failure of the predictive control, embodiments continue valve actuation under reactive control via the force/torque sensor. Connection to a calibration valve simulator enables embodiments to perform an initial self-calibration using the force/torque sensor of the actuator. The motor can be a variable frequency driven AC motor or a DC motor. The calibration can incorporate mechanical properties of an actuator gear train.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: February 16, 2021
    Assignee: Flowserve Management Company
    Inventors: Mark D Ollander, Daniel E Carlson, Michael Adam Rumore
  • Patent number: 10851912
    Abstract: A method is detect inadequate valve seat integrity in a control element of a control valve is proposed, wherein during a calibration time interval the position of the control element of the control valve in the closed position are repeatedly measured and recorded. Measuring of the position in the closed position continues during operation, and a moving average value is determined over a specified number of values. A threshold is determined from the calibration data set and the specified number. If the moving average deviates from the average of the calibration data by more than this threshold, a message is output. In particular, no additional sensors or scanning devices are required and a sensible compromise between early fault detection and avoidance of false diagnoses is achieved.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: December 1, 2020
    Assignee: SAMSON AKTIENGESELLSCHAFT
    Inventor: David Wagner-Stuerz
  • Patent number: 10823585
    Abstract: A sensor apparatus for a magnetic bearing apparatus includes a motion sensor and a sensor ring which has the shape of a hollow cylinder and is intended to be connected to a shaft of an electrical rotating machine in a force-fitting manner, wherein the motion sensor is separated from the sensor ring by an air gap. In order to achieve a greater degree of reliability at high rotation speeds and ratings in comparison to the prior art, the sensor ring has a carrier ring composed of a first material and a sensor target composed of a second material.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: November 3, 2020
    Assignee: Siemens Aktiengesellschaft
    Inventors: Benjamin Gottfried Ulbrich, Martin Wieschalla
  • Patent number: 10760994
    Abstract: It is an object to perform an abnormality diagnosis for a feed axis without additionally adding a sensor or the like. A frequency characteristic of a feed axis and a damage frequency that occurs when the feed axis that has been damaged performs an axis operation are obtained, a frequency where a gain is maximized in the obtained frequency characteristic is calculated, and a feed velocity where the frequency matches the damage frequency is calculated. An axis operation is performed on the feed axis with the calculated feed velocity, and a frequency analysis is performed on servo information regarding a control of a servo motor during the axis operation. Then, the presence and absence of a peak of the damage frequency is confirmed from a result of the frequency analysis, and when the peak is present, it is determined that it is abnormal.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: September 1, 2020
    Assignee: Okuma Corporation
    Inventor: Takumi Hongo
  • Patent number: 10732152
    Abstract: A device for monitoring healthy status of machinery mounts is provided, which may include a plurality of vibration detectors, a signal acquisition device and a signal processor. The vibration detectors may detect the vibration signals from of a machine device, where the machine device may include a plurality of machinery mounts. The signal acquisition device may receive the vibration signals of the vibration detectors. The signal processor may execute a modal frequency analysis process to analyze the vibration signals of the vibration detectors, and calculate a vibration mode corresponding to the natural frequency of the machinery mounts in current status to serve as the test mode; then, the signal processor may compare the test mode with a reference mode to determine the healthy status of the machinery mounts, where the reference mode is corresponding to the natural frequency of the machinery mounts in the optimized status.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: August 4, 2020
    Assignee: NATIONAL CHUNG CHENG UNIVERSITY
    Inventors: Chih-Chun Cheng, Ping-Chun Tsai, Wen-Nan Cheng, Zhen-Wei Zhuang, Yu-Hsin Kuo, Zhi-Xuan Zhang, Yu-Sheng Chiu, Ren-Zh Lu
  • Patent number: 10697318
    Abstract: A non-transitory computer readable medium stores instructions that are executed by a processor of a monitoring that when executed, the processor receives a state of at least one operational parameter of the turbomachinery. Then, the processor determines whether the state is within a region of accuracy of a stored record of a stored state stored in the memory. When the state is within the region of accuracy, the processor determines at least one operating condition from the stored record. Alternatively, when the state is not within the first region of accuracy, the processor stores the state as a new record in the memory.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: June 30, 2020
    Assignee: General Electric Company
    Inventors: Sidharth Abrol, David Spencer Ewens, Prabhanjana Kalya, Samhitha Palanganda Poonacha
  • Patent number: 10607470
    Abstract: A system, a hand-held vibration monitor and a method for setting vibrational alarms for machinery. The system includes a vibrational alarm device having a plurality of vibration data inputs from a machinery group, a memory for storing historical vibration data from the machinery group, an accumulator for generating average vibrational data for the machinery group, a processor for selecting a vibration alarm limit based on a cumulative distribution curve of the average vibrational data, and a warning alarm to alert a user that the machinery has reached the vibrational alarm limit when vibration data from a machine in the machinery group reaches the vibrational alarm limit.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: March 31, 2020
    Assignee: Computational Systems, Inc.
    Inventor: Anthony John Hayzen
  • Patent number: 10598568
    Abstract: A method of measuring and analyzing vibrations of a mechanical system, e.g., for performing gear and bearing fault detection within a system having a reference shaft and a plurality of rotating components. The method may include the steps of tabulating gear ratios of the plurality of rotating components relative to the reference shaft in integer form, establishing a measurement specification and communicating the measurement specification to a digitizer, recording vibration data from the mechanical system during operation, and resampling the recorded vibration data using the tabulated gear ratios to obtain vibration data corresponding to the rotating components and a vibration signature for a component of interest at predetermined angular increments.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: March 24, 2020
    Assignee: Tensor Systems Pty Ltd
    Inventors: John Adrian Morey, James Edward Steward
  • Patent number: 10570887
    Abstract: Disclosed herein is a vibration monitoring and diagnosing system for monitoring conditions of a wind power generator and diagnosing a defective portion thereof using vibration characteristics obtained from acceleration sensors mounted to the wind power generator. A vibration-based defect detecting method may include: collecting vibration data of the wind power generator using the plurality of sensors; extracting a first characteristic value of a time domain based on the vibration data; extracting characteristic values in one or more frequency bands for a location of each sensor in a frequency domain or an envelope frequency domain if the first characteristic value is greater than a preset alarm setting value; and determining that a defect is present when at least one characteristic value of the characteristic values is greater than a preset normal value.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: February 25, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventors: Jong Duk Son, Jeong Hoon Lee, Ki Hak Lee, Seung Man Eom
  • Patent number: 10564070
    Abstract: A method for detecting a damaged-bearing in an engine using a vibration signal may include: separating, by a controller, a vibration signal of the engine detected by a vibration detecting device installed on one side of the engine of a vehicle into a vibration signal caused by combustion knocking and a vibration signal generated in a bearing, extracting a signal in a predetermined natural frequency band from the vibration signal generated in the bearing using a band-pass filter, and processing the extracted signal to a quantified bearing signal using the controller, and comparing the quantified bearing signal with a preset damaged-bearing criterion using the controller to determine whether the quantified bearing signal is equal to or higher than the preset damaged-bearing criterion to determine a damage to the bearing.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: February 18, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Hyuk Im, Dong-Chune Hong, Jin-Kwon Kim, Dae-Woon Kim, Jun-Ho Park, Il-Joong Hwang, Hong-Wook Lee, Hyun-Jun Lim
  • Patent number: 10545071
    Abstract: Methods and systems to achieve highly efficient rotational machine integrity determinations in which at least one sensor (106) senses indicia (105) such as time-varying rotational indicia from a rotational motive apparatus (103) and a processor (108) may provide many different functions including but not limited to operational function energy apportioning decisional processing, data compression, intelligent hierarchical data ranking, differential data processing, or the like perhaps to generate information (109) such as a rotational integrity abridgment transmissor to which an abridgment transmissor electromagnetic signal (112) may be created and perhaps even transmitted from a rotational motive apparatus to facilitate a machine integrity determination.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: January 28, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventor: Johannes I. Boerhout
  • Patent number: 10545986
    Abstract: A method for grouping content displayed on a graphical user interface may include displaying selectable components that correspond to types of measurement data associated with a device or a component within the device. The method may then include receiving a selection of one of the selectable components, such that the one of the selectable components corresponds to a portion of the measurement data. The method may then receive a grouping mode input to specify characteristics for display of the portion of the data as data processing outputs. The method may then include displaying the data processing outputs associated with the selection, such that each respective data processing output may include visualizations associated with datasets of the portion of the measurement data. The respective visualizations of the respective data processing output may be displayed together based on an association between the respective datasets and the grouping mode input.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: January 28, 2020
    Assignee: General Electric Company
    Inventors: Jacqueline Marie Tappan, Ryan Gregory Roaldson
  • Patent number: 10491970
    Abstract: A system for a gas turbine engine includes an electrical interface device, a sensing/control/identification device, and a remote processing unit. The electrical interface device has electrical interface device data. The electrical interface device is operatively connected to a sub-system component that is provided with a shielding. The sensing/control/identification device is disposed within the sub-system component and is attached to the electrical interface device. The remote processing unit is in electromagnetic communication with the sensing/control/identification device.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: November 26, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Kurt J. Sobanski, Joseph V. Mantese
  • Patent number: 10473688
    Abstract: The present disclosure provides a sensor system for measuring a parameter of a body. The sensor system includes a housing mountable to a rotating part of the body. The housing includes a first dual-axis accelerometer having a first measurement axis and a second measurement axis, the first dual-axis accelerometer arranged to measure a first acceleration along the first measurement axis and a second acceleration along the second measurement axis and a second dual-axis accelerometer having a third measurement axis and a fourth measurement axis, the second dual-axis accelerometer arranged to measure a third acceleration along the third measurement axis and a fourth acceleration along the fourth measurement axis. The sensor system also includes a processor configured to receive the first, second, third and fourth measured accelerations and determine from the first, second, third and fourth measured accelerations the parameter.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: November 12, 2019
    Inventor: Larry E. Hawker
  • Patent number: 10408269
    Abstract: There is provided a wireless sensor-equipped bearing. A plurality of magnets are fixed between pockets of a retainer formed of an annular body such that an N pole and an S pole of the magnets neighbor in a circumferential direction of the annular body. A coil, a circuit unit and an antenna are fixed to a surface of a first seal, the surface being opposed to the magnets. A sensor is disposed on any one of an inner ring, an outer ring and the first seal.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: September 10, 2019
    Assignee: NSK Ltd.
    Inventors: Toshihiko Okamura, Kunihiko Sasao, Hideki Kobayashi
  • Patent number: 10352823
    Abstract: Engine health monitoring is used to assess the health of an engine, such as a gas turbine engine. Blades mounted on a shaft produce a modal response when excited. The shaft has an order related component that varies with the rotational velocity of the shaft. Modal responses are increased when the natural frequency range of the selected blade mode intersects with one of the order related components. By applying a short time chirp-Fourier transform with a frequency speed that is a function of a rate of change in the rotational velocity of the shaft a selected signal can be isolated. Cracks in the blades can be detected from the isolated signal.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: July 16, 2019
    Assignee: ROLLS-ROYCE plc
    Inventors: Paul Anuzis, Leonid Moiseevich Gelman
  • Patent number: 10330565
    Abstract: Provided is a test apparatus including a fixing jig for vibration test of a battery pack. The fixing jig includes at least one upper block that is coupled to at least one coupler formed in the battery pack, a lower block placed below the at least one upper block, and a base plate having a board shaped and placed below the lower block.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: June 25, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Hee-Su Lee, Soon-Chang Hong, Bo-Hyon Kim, Jae-Hyun Seo, Hyung-Jun Ahn, Hyeon-Ki Yun
  • Patent number: 10309516
    Abstract: A measuring system for detecting variables on planet carriers of a planetary gear train having a plurality of planetary gear stages includes a first sensor which is arranged on one of the planet carriers of one of the planetary gear stages for detecting the variables of a planet gear rotationally connected to the at least one of the planet carriers. An electronics configured for arrangement on the planetary gear train is operably connected to the first sensor for supply of the first sensor with electrical energy.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: June 4, 2019
    Assignee: Flender GmbH
    Inventors: Julia Camminadi, Matthias Deicke, Jörg Hassel, Reinhold Keck, Hans-Henning Klos, Stefan Von Dosky
  • Patent number: 10309893
    Abstract: A method of detecting inconsistencies in a composite structure is presented. A pulsed laser beam is directed towards the composite structure comprised of a number of composite materials. Wide-band ultrasonic signals are formed in the composite structure when radiation of the pulsed laser beam is absorbed by a surface of the composite structure. The wide-band ultrasonic signals are detected over a duration of time to form data. The data comprises an ultrasonic A-scan spectrum. The data is processed to identify a structure signal in a frequency domain of the ultrasonic A-scan spectrum. The structure signal of the ultrasonic A-scan spectrum is compared to a structure signal of a composite structure standard to determine whether the inconsistencies are present in the number of composite materials.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: June 4, 2019
    Assignee: The Boeing Company
    Inventors: Gary Ernest Georgeson, William P. Motzer, Jill Paisley Bingham, Alan F. Stewart, Steven Kenneth Brady, James C. Kennedy
  • Patent number: 10180376
    Abstract: A ball bearing inspection device includes: an arbor supporting an inner ring on the outer circumferential surface; a rotary drive unit driving the arbor; a first pressing unit applying a preload to a ball bearing; a second pressing unit applying a preload in an opposite direction of the pressing direction; and a vibration detection unit detecting vibration from the ball bearing. The arbor includes an abutting section that protrudes outward from the outer circumferential surface, a movable flange arranged apart from the abutting section, and a flange drive mechanism switching the movable flange between a first state in which the movable flange protrudes from the outer circumferential surface and a second state in which the movable flange is accommodated within the arbor. The flange drive mechanism is additionally provided with a drive force supply unit that applies drive force for switching to the first or the second state.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: January 15, 2019
    Assignee: NSK LTD.
    Inventors: Daisuke Kondo, Taito Shibuya, Kentarou Kachi, Katsuyuki Kawamura, Shinichi Takamura
  • Patent number: 10168248
    Abstract: A method of measuring and analyzing vibrations of a mechanical system, e.g., for performing gear and bearing fault detection within a system having a reference shaft and a plurality of rotating components. The method may include the steps of tabulating gear ratios of the plurality of rotating components relative to the reference shaft in integer form, establishing a measurement specification and communicating the measurement specification to a digitizer, recording vibration data from the mechanical system during operation, and resampling the recorded vibration data using the tabulated gear ratios to obtain vibration data corresponding to the rotating components and a vibration signature for a component of interest at predetermined angular increments.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: January 1, 2019
    Assignee: Tensor Systems Pty Ltd
    Inventors: John Adrian Morey, James Edward Steward
  • Patent number: 10145761
    Abstract: A system and method are provided for equipment sound monitoring. The system includes an electromechanical device having at least one cavity defined therein. A dampening tube is such that at least a portion of the dampening tube is received within the at least one cavity without contacting a surface of the electromechanical device. A transducer box includes an opening defined therein, the opening configured to receive at least a portion of the dampening tube. The transducer box further includes a sound detection module configured to detect at least one of audio and vibration associated with the electromechanical device. A method of connecting and using the equipment sound monitoring system are provided.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: December 4, 2018
    Assignee: Discovery Sound Technology, LLC
    Inventors: John Jenkins, Mike Stumpf
  • Patent number: 10019886
    Abstract: A sticker for attaching to at least one part of a machine having at least one rotating component that is to be monitored is provided. The sticker includes a vibration status indicator arranged to indicate when a vibration of the machine having the at least one rotating component exceeds a predetermined level. Also, a condition monitoring system for monitoring the condition of a machine having at least one rotating component is provided. The monitoring system provides at least one such sticker and a device that is arranged to collect information from the at least one sticker.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: July 10, 2018
    Assignee: AKTIEBOLAGET SKF
    Inventors: Anders Welin, Svetoslav Staykov
  • Patent number: 9989439
    Abstract: Method for detecting bearing defect severity based on bearing rotation speed and at least one data sample of sensor data obtained to measure vibrations of a bearing ring is provided. The method includes converting the data sample from time domain to frequency domain to obtain a signal frequency spectrum; determining a defect center frequency of the bearing using the rotation speed; and identifying a predetermined number of frequency peaks of the signal frequency spectrum. A total vibration energy in an overall frequency band including the predetermined number of frequency peaks is first determined; next, for each of the frequency peaks, a peak energy as a spectral energy of signal components giving rise to the frequency peaks is determined; calculating a bearing defect spectral energy using the peak energies; and finally a ratio of the bearing defect spectral energy and a total vibration energy to assess a defect severity is obtained.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: June 5, 2018
    Assignee: AKTIEBOLAGET SKF
    Inventor: Allan Thomson
  • Patent number: 9984551
    Abstract: A system for anticipating low-speed bearing failure triggers a notification when a noise generated by the low-speed bearing exceeds a threshold. The system predicts failure far in advance of the actual failure. The system includes an accelerometer for detecting the noise generated by the bearing. The signal produced by the accelerometer is processed using a band pass filter, an amplifier/rectifier, an averaging filter, and a voltage to current converter. The signal and raw data are transmitted to a remote monitoring system, such as a computer. The signal is further analyzed, such as to produce a best-fit line. When the signal exceeds a predetermined threshold, such as when the amount or the slope of the best-fit line exceeds a value, the remote system notifies a monitor to schedule maintenance.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: May 29, 2018
    Assignee: Ashworth Bros., Inc.
    Inventors: Joseph M. Lackner, Arthur J. Marshall
  • Patent number: 9964477
    Abstract: A method of detecting a preload of a linear guide includes: applying an external force to the linear guide with an external force applying device, wherein the external force applying device sends an impact signal while applying the external force; sensing with a sensor a vibration signal sent from the linear guide because of vibration thereof which occurs under the external force; and receiving the impact signal of the external force applying device and the vibration signal of the sensor and calculating the preload of the linear guide according to a received result, with a signal analyzer. Therefore, with the method of the present invention, the preload of the linear guide is precisely tested regardless of environmental factors.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: May 8, 2018
    Assignee: Hiwin Technologies Corp.
    Inventors: Chang-Hsin Kuo, Po-Lin Lee
  • Patent number: 9921136
    Abstract: A sensor unit is configured as a single body, removably mounted in its entirety to a test point location on a machine so machine vibrations propagate into the single body. Within are an accelerometer, circuit board, wireless interface, signal processor, and battery. The sensor unit transmits sensor data wirelessly in real time to a data collection unit. A technician with data collection unit in hand goes from machine to machine, along a route of multiple test point locations on multiple machines, mounting and dismounting the sensor unit and collecting machine vibration data. The sensor unit is configured to reduce frequency response impacts of the mass and volume of the circuit board, wireless interface, signal processor, and battery on dynamic behavior of the sensor unit with respect to machine vibrations to achieve a frequency response rating comparable to a wired sensor.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: March 20, 2018
    Assignee: 01dB-Metravib, Societe Par Actions Simplifee
    Inventors: Bertrand Wascat, Philippe Poizat, Patrick Labeyrie, Thierry Mazoyer
  • Patent number: 9903787
    Abstract: The rotor of the turbine is monitored by sensors of the rotor vibrations arranged in at least one plane of measuring perpendicular to the axis of the rotor and by sensors of the absolute vibrations of the bearings. When using this method of processing, synchronically digitalized signals of the sensors of rotor vibrations, first the arithmetic mean of the individual harmonic bands in full spectrum in the frequency domain is calculated, by which means the information about the subharmonic components and their multiples in the full spectrum of these signals is transferred into the frequency band ?1X to 1X, at the same time is by the calculation of the median estimated the level of the signal noise, with which individual frequency bands of the full spectrum are encumbered, and which is subtracted from the amplitudes in the individual frequency bands of full spectrum of the signals of the sensors.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: February 27, 2018
    Assignees: DOOSAN SKODA POWER S.R.O., ZAPADOCESKA UNIVERZITA V PLZNI
    Inventors: Vaclav Cerny, Jindrich Liska
  • Patent number: 9806646
    Abstract: In a control apparatus, a fundamental voltage generator generates, based on a target rotational speed, a fundamental voltage command for a fundamental voltage. A property storage stores a natural vibration property of a rotor when the rotor is rotating as a rotating vibration property. A rotating state detector detects a rotating position and a rotational speed of the rotor as a rotating state of the rotor. A harmonic voltage generator generates, based on the rotating state of the rotor and the rotating vibration property, a harmonic voltage command to be superimposed on the fundamental voltage command generated by the fundamental voltage generator.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: October 31, 2017
    Assignee: DENSO CORPORATION
    Inventors: Ryunosuke Akimatsu, Tatsuya Tonari, Toshihiro Uchida
  • Patent number: 9791856
    Abstract: Systems and methods are provided for monitoring operating machinery to identify fault frequency sets for consumable components used in the machinery. Data associated with characteristic behavior of the machinery being monitored is acquired and analyzed, comparing known vendor information regarding fault frequencies for specified components to vibration frequencies observed in the machine in service. The systems and methods described herein enable an operator to identify and confirm critical information such as the location of and/or vendor identity for components exhibiting fault vibration behavior.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: October 17, 2017
    Assignee: General Electric Company
    Inventors: Charles Terrance Hatch, Jesse Lewis Hanna, Shekhar Raghuvir Sashital, Dhruti Gishu Pillai, Yash Vijay Churi
  • Patent number: 9746306
    Abstract: Method for determining the contact angle (?) of a rolling element bearing (10) comprising an inner ring (12), an outer ring (14) and a plurality, P, of rolling elements (16) interposed between the inner ring (12) and the outer ring (14). The method comprises the step of determining the relative speed of P?1 or fewer of said plurality, P, of rolling elements (16) with respect to the inner ring (12) and/or the outer ring (14) and determining the contact angle (?) of said rolling element bearing (10) therefrom.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: August 29, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventor: Olle Bankeström
  • Patent number: 9733154
    Abstract: A sensor unit for a bearing including at least one inner ring and at least one outer ring, wherein the sensor unit is configured to detect at least one state variable of the bearing. The sensor unit is embedded in a recess of one of the inner ring or the outer ring.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: August 15, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Andrew Campbell, Allan Thomson, Joseph Erskine
  • Patent number: 9546691
    Abstract: A method for adjusting an axial preload in a bearing assembly that has two rolling-element bearings that are axially pressable against each other, each of the two rolling-element bearings including at least one bearing outer ring and at least one bearing inner ring and at least one row of rolling elements disposed between the at least one bearing outer ring and at least one bearing inner ring. The method includes a) driving the bearing assembly by rotating one of the bearing outer ring and the bearing inner ring while holding other bearing ring fixed and measuring the rotational speed of the circulation of the rolling elements about the bearing assembly axis or of a bearing cage about the stationary bearing ring, and b) changing the axial preload in the bearing assembly until a desired rotational speed has been obtained.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: January 17, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventor: Padelis Katsaros
  • Patent number: 9423290
    Abstract: An effective value operation unit calculates an effective value of a vibration waveform of a bearing, the vibration waveform being measured by using a vibration sensor. An envelope processing unit performs envelope processing on the vibration waveform measured by using the vibration sensor, thereby generating an envelope waveform of the vibration waveform. An effective value operation unit calculates an effective value of an AC component of the envelope waveform generated by the envelope processing unit. A diagnostic unit diagnoses an abnormality of the bearing based on the effective value of the vibration waveform calculated by the effective value operation unit and the effective value of the AC component of the envelope waveform calculated by the effective value operation unit.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: August 23, 2016
    Assignee: NTN CORPORATION
    Inventors: Tomoya Sakaguchi, Nobuyuki Ninoyu, Junichi Hirata, Yasuhiko Sakakibara
  • Patent number: 9404386
    Abstract: A method comprising the steps of determining normalized delta times of arrival corresponding to a plurality of blades based upon actual times of arrival corresponding to the plurality of blades, and determining static deflections of the plurality of blades by removing effects of one or more common factors from the normalized delta times of arrival corresponding to the plurality of blades.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: August 2, 2016
    Assignee: General Electric Company
    Inventors: Prashanth D'Souza, Venkatesh Rajagopalan
  • Patent number: 9376263
    Abstract: A system for monitoring an endless belt conveyor, comprising a sensor for sensing a vibration of an idler roller and generating a signal corresponding to the sensed vibration, at least one of the frequency and amplitude of the generated signal being indicative of a condition of the idler roller, the sensor being integral with the endless belt conveyor.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: June 28, 2016
    Assignee: Intium Energy Limited
    Inventor: Timothy Francis Jones
  • Patent number: 9366611
    Abstract: An apparatus for mapping liner wear of a bearing around the circumference of the bearing which includes a rotary indexer that can hold the bearing, a shaft, a force applying mechanism, a rotating mechanism, a digital displacement indicator, and a recorder.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: June 14, 2016
    Assignee: The United States of America as represented by the Secretary at the Navy
    Inventor: Noah Jung
  • Patent number: 9218517
    Abstract: A card reader device for reading a card having data stored on a magnetic stripe incorporated into the card is disclosed in which the card reader device comprises a read head for passing a magnetic stripe of a card by to read data stored on a magnetic stripe and for producing a signal indicative of data stored on a magnetic stripe, and an output plug adapted to be inserted into a headset jack associated with a host device for providing the signal indicative of data stored on a magnetic stripe to a host device.
    Type: Grant
    Filed: February 26, 2011
    Date of Patent: December 22, 2015
    Assignee: REM Holdings 3, LLC
    Inventor: Robert E. Morley, Jr.