Vibration Or Acoustic Noise Control Patents (Class 700/280)
  • Patent number: 10379512
    Abstract: A system includes a computer processor located within a cloud system. The system receives data from a sensor associated with an industrial or home automation control application. The sensor is configured to monitor a first condition of a device. The computer processor analyzes the data, and transmits a software update or software download from the cloud system to the industrial or home automation control application based on the data analysis.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: August 13, 2019
    Assignee: Honeywell International Inc.
    Inventors: Chinmaya Kar, Christober Vinoth Raj, Vishwanath Raghavendra Chamarajanagar, Chirag Solanki, Kushagra Thakur
  • Patent number: 10328944
    Abstract: Methods and systems are provided for diagnosing whether active engine mounts configured to isolate engine vibration from a cabin and chassis of a vehicle are functioning as desired. In one example, a method includes indicating degradation of an active engine mount by inducing degraded combustion events in a preselected engine cylinder, and operating the active engine mount in multiple modes, the indication responsive to an amount of vehicle chassis vibration during each of the modes. By monitoring chassis vibrations as a function of induced degraded combustion events, and further responsive to the active engine mounts being controlled to the multiple modes, it may be indicated as to whether the active engine mounts are functioning as desired.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: June 25, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M. Dudar
  • Patent number: 10330648
    Abstract: The present invention relates to a method for acoustically detecting at least one malfunction (DYS) of a motor, the motor generating a primary noise Po that is treated by an active noise control system emitting, at the noise reduction targets, an acoustic signal Pc produced by at least one actuator and connected by a transfer function H to a signal Y produced by said active noise control system, said malfunction (DYS) having an acoustic signature identifiable in the primary noise Po at the noise reduction targets, characterized in that it comprises the following steps: acquisition of said signal Y produced by the active control system; identification of the appearance, if any, of a malfunction by a monitoring means that uses the knowledge of Y and H and emits an alert message if warranted.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: June 25, 2019
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventor: Geoffroy Nicq
  • Patent number: 10150541
    Abstract: A method includes calculating a frequency and a phase of a vibration of a floating vessel, generating a control signal based on the vibration frequency and the vibration phase, operating a motion compensation system of the floating vessel during an ith control cycle using the control signal to mitigate the vibration of the floating vessel, calculating a first vibration amplitude based on the control signal, updating one or more parameters including a magnitude of the control signal, a decay rate of the vibration, the vibration phase, and the vibration frequency using the first vibration amplitude, updating the control signal based on the one or more updated parameters, and operating the motion compensation system based on the updated control signal during an (i+1)th control cycle.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: December 11, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jason D. Dykstra, Xingyong Song, Yiming Zhao
  • Patent number: 10143107
    Abstract: An apparatus comprises a memory, a processor coupled to the memory, one or more altitude sensors, one or more ambient temperature sensors, and one or more air movers. The processor implements an air mover control module configured to obtain at least one altitude reading from at least one of the one or more altitude sensors, to determine an altitude factor based on the at least one altitude reading, to obtain at least one ambient temperature reading from at least one of the one or more ambient temperature sensors, to determine target speeds for respective ones of the air movers utilizing the altitude factor and the at least one ambient temperature reading, and to control operation of the air movers based on the target speeds.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: November 27, 2018
    Assignee: EMC IP Holding Company LLC
    Inventors: Weidong Zuo, David E. Boudreau, Joseph P. King, Jr.
  • Patent number: 10095248
    Abstract: A method for isolating vibrations from a source on a structure includes modeling the structure as a beam having a portion for isolation. A sensor is positioned proximate to the source, and at least one actuator is positioned on the structure between the source and the portion for isolation. A controller receives signals from the sensor and calculates vibrational inputs for each actuator that will isolate the structure portion. Driving signals are provided to each actuator by the controller in response to the calculated vibrational inputs, and each actuator is vibrated accordingly, isolating the structure portion from the source. This method can be implemented in multiple configurations to isolate the structure portion.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: October 9, 2018
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Anthony A Ruffa
  • Patent number: 10096314
    Abstract: A noise and vibration sensing system is provided. The sensing system includes an acceleration sensor arrangement and a summer module. The acceleration sensor arrangement includes at least one acceleration sensor and is configured to generate at least two sense signals representative of acceleration that acts on the acceleration sensor arrangement. The at least two sense signals includes dynamic ranges that are ratios between maximum amplitudes of the at least two sense signals and noise created by the acceleration sensor arrangement. The summer module is configured to sum up the at least two sense signals to provide a sum signal that includes noise and a dynamic range which is a ratio between a maximum amplitude of the sum signal and the noise included in the sum signal. The dynamic range of the sum signal is greater than the arithmetic mean of the dynamic ranges of the at least two sense signals.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: October 9, 2018
    Assignee: Harman Becker Automotive Systems GmbH
    Inventor: Markus Christoph
  • Patent number: 10083683
    Abstract: A noise source emits an acoustic noise wave with a noise frequency corresponding to an attribute of a control-status signal associated with the noise source. A method to reduce the noise comprises generating, based on the noise frequency corresponding to the attribute, an anti-noise signal having the noise frequency. The method further comprises phase-shifting the anti-noise signal to output a phase-shifted anti-noise signal that can be used to generate a noise-cancelling acoustic wave. The method can include aligning the first anti-noise signal to be in-phase with the acoustic noise wave. An anti-noise apparatus to implement the method includes an anti-noise generator, to generate the anti-noise signal, and a phase shifter to generate and output the phase-shifted anti-noise signal. The anti-noise apparatus can include a phase detector and phase alignment element to align the anti-noise signal to be in-phase with the acoustic noise wave.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: September 25, 2018
    Assignee: International Business Machines Corporation
    Inventors: Zhan Peng Huo, Yang Liang, Shu Jun Tang, Ying Zhao Yan, Ting Yin, Hui Hui Zhao
  • Patent number: 10083314
    Abstract: A secret parallel processing device reducing communication amount includes: a randomization unit that obtains a non-randomized input sequence and outputs a randomized sequence obtained by joining the non-randomized sequence and a dummy record sequence formed of a disclosed value and subjecting the joined sequences to random replacement processing and concealed random replacement data obtained by concealing used random replacement data; a calculation unit that obtains the non-randomized sequence, the randomized sequence, and the dummy record sequence, applies a predetermined function to the sequences, and generates an output checksum for each sequence by using calculation procedure data used in the processing of applying the function; and a correctness verification unit that obtains the output checksum for each sequence and the concealed random replacement data, assesses the output checksum for each sequence, and outputs a final test result determining whether the predetermined function has been correctly appl
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: September 25, 2018
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Dai Ikarashi, Ryo Kikuchi, Koki Hamada, Koji Chida
  • Patent number: 10016673
    Abstract: A gaming system is configured for dynamic and location-specific sound management in distributed gaming environments. A mobile gaming device executes a gaming application in undefined areas such as airports or restaurants. Various fixed gaming stations are disposed across gaming zones in defined gaming areas such as casino floors. A server communicates with the mobile device and gaming stations and samples ambient sounds with respect to each, and identifies desired sound signatures with respect to one or more of the gaming zones, such as ambient sounds for an associated gaming application, a jackpot or equivalent “hot spot” in the gaming environment, etc. The mobile device is directed to emit the ambient sounds associated with the identified desired sound signatures for the gaming zone in the defined area. The server may further direct sound emitters associated with the mobile device to locally suppress ambient sounds other than identified zone-specific exception sound signatures.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: July 10, 2018
    Assignee: Video Gaming Technologies, Inc.
    Inventors: Dan Milligan, Ben Lechlitner, Chris Jarrell, Chris Thacker, Scott Winzeler
  • Patent number: 9977422
    Abstract: A machinery health monitoring module processes machine vibration data based on vibration signals and provides the machine vibration data to a distributed control system. A distributed control system operator computer executes a software user interface that filters relevant configuration parameters based on a selected machine measurement type so that only those parameters that are applicable to the selected measurement type appear on the user interface screen. Further, configuration parameters for individual measurement values within the measurement type are made available only when a particular measurement value is selected for acquisition. This greatly simplifies the information that is displayed on the configuration user interface.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: May 22, 2018
    Assignee: Computational Systems, Inc.
    Inventors: Kevin D. Steele, Deane M. Horn
  • Patent number: 9971631
    Abstract: According to the present invention, a method comprising: (a) calculating, by an admission control program, a parameter for scheduling a pipeline using a maximum allowable period and an execution time for each of N motion tasks, wherein the parameter includes an optimal periodic value, a task offset and an input/output offset for each of the N tasks; (b) generating, by a coordinator program, N motion tasks, wherein one of the N motion tasks is determined to be a reference task, and the other is determined to be a non-reference task; (c) allowing, by the reference task and the non-reference task, an operating system to generate a task wakeup timer and an input/output (I/O) initiating timer; and (d) setting, by the non-reference task, a task offset and an input/output offset for an own timer on the basis of the task wakeup timer of the reference task.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: May 15, 2018
    Assignee: FOUNDATION OF SOONGSIL UNIVERSITY INDUSTRY COOPERATION
    Inventors: Kang-Hee Kim, Hyeong-Seok Kang, Jin-Young Choi, Joon-Woo Lee
  • Patent number: 9642684
    Abstract: An electric toothbrush with a thinner handle part to ensure the ease of manual tooth-brushing while improving the ease of a switch operation between the operating state and the stopped state, the electric toothbrush being configured to realize an effective oral cleaning by automatically giving a necessary mechanical assistance to a brush part according to the brushing state constantly varying during tooth-brushing depending on the cleaned part and the ways of holding and moving the toothbrush.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: May 9, 2017
    Assignee: SUNSTAR INC.
    Inventors: Kazuaki Yoshida, Masahiro Nishiura
  • Patent number: 9611139
    Abstract: A micro-electro-mechanical device with a closed feed-back damping loop is provided. Displacement in the mechanical resonator is opposed with a damping force determined by the closed feed-back loop that comprises a filter with a peaked frequency response, and associated phase adjustment. An oscillation-free configuration that allows high signal amplification is achieved.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: April 4, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Heikki Kuisma
  • Patent number: 9591403
    Abstract: A method for operating an active noise reduction system that is designed to reduce sinusoidal noise, where there is an active noise reduction system input signal that is related to the frequency of the noise to be reduced, and where the active noise reduction system comprises one or more adaptive filters that output a generally sinusoidal noise reduction signal that is used to drive one or more transducers with their outputs directed to reduce the noise. Distortions of the noise reduction signal are detected. A distortion is based at least in part on differences between the frequency of the noise reduction signal and the frequency of the sinusoidal noise. The noise reduction signal is altered based on the detected distortion.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: March 7, 2017
    Assignee: Bose Corporation
    Inventor: Alaganandan Ganeshkumar
  • Patent number: 9551410
    Abstract: A method for assuring that a signal, for damping drive train vibrations, is overlaid during the same time period as the drive train vibration, and not delayed by one time period. The method comprises the steps of continuously calculating a correction torque for the vibration damping, determining, through a parallel signal path, whether the vibration damping is to be activated or deactivated, and overlaying the correction torque to the drive train vibration, if the necessity arises for activation of the vibration damping.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: January 24, 2017
    Assignee: ZF Friedrichshafen AG
    Inventors: Franz Bitzer, Peter Herter
  • Patent number: 9446861
    Abstract: A method for health monitoring for an aircraft includes the steps of obtaining vibration data for the aircraft, obtaining navigation data for the aircraft, and determining a measure of health of the aircraft using the vibration data and the navigation data.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: September 20, 2016
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Jeffery A. Goodrich, Paul Grabill, Tom Brotherton, Robert H. Luppold
  • Patent number: 9405299
    Abstract: A control device configured with a torque/current computation section, an actual current computation section, a current feedback control section, and a voltage control section. A two-axis rotating coordinate system has a first axis defined in a direction of field magnetic flux of a magnet provided in the rotor, and a second axis defined in a direction that is shifted by an electrical angle of 90 degrees with respect to the first axis. In the case where a torque command includes periodic torque vibration, the torque/current computation section executes first-axis command fixation control in which a first-axis current command, which is a first-axis component of the two-phase current command, is fixed at a predetermined value and a second-axis current command, which is a second-axis component of the two-phase current command, is vibrated in accordance with the torque vibration.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: August 2, 2016
    Assignee: AISIN AW CO., LTD.
    Inventors: Yomei Hakumura, Hirokazu Kobayashi
  • Patent number: 9230535
    Abstract: An active vibration noise control apparatus with which vibration noise can be reduced stably and effectively by preventing divergence of a filter coefficient or a delay in convergence due to an effect of a transfer characteristic on a secondary path. The active vibration noise control apparatus calculates an update step size in accordance with a magnitude of a gain in the transfer characteristic corresponding to a frequency of vibration noise, where the transfer characteristic is on the secondary path for propagation of a secondary vibration noise for reducing the vibration noise, and updates the filter coefficient on the basis of the calculated update step size.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: January 5, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Atsuyoshi Yano
  • Publication number: 20150142182
    Abstract: An active anti-vibration apparatus is provided that supports a wide range of vibration accelerations using only one type of anti-vibration mechanism. Upon occurrence of an excessive acceleration, the active anti-vibration apparatus performs switching such that an acceleration detection gain 14b of an acceleration amplifier 14 is multiplied by a prescribed magnification, the cutoff frequency of a high-pass filter 11a of a vibration control unit 11 is increased, and an acceleration control gain 11b of the vibration control unit 11 is multiplied by the reciprocal of the prescribed magnification.
    Type: Application
    Filed: July 30, 2013
    Publication date: May 21, 2015
    Inventors: Ryuji Kimura, Kosuke Suemura
  • Patent number: 9035493
    Abstract: According to one embodiment, there is provided a power-fluctuation reducing apparatus in a power generation system to control a converter connected to the power generation system and connected to secondary batteries. The power-fluctuation reducing apparatus includes adjusting direct current voltages output from the secondary batteries, respectively, detecting the directing current voltages output from the secondary batteries, respectively, controlling to adjust the direct current voltages output from the secondary batteries to make the direct current voltages uniform, based on the detected direct current voltages, and controlling the converter to reduce power fluctuations in the power generation system.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: May 19, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masanori Arata, Yoshihiro Taniyama, Kazuya Yasui
  • Patent number: 9027873
    Abstract: The adaptive reference model algorithm uses a gain scheduling feature combined with a customized Least-Squares routine as an adaptive method for adjusting feedback control so as to account for variations in Transfer Function (G), thereby optimizing the effectiveness of the Active Vibration Control (AVC) System. The Least-Squares routine identifies the transfer function in a background process without interruption of closed loop vibration control. This identification approach is accomplished without intentional interrogation of the AVC actuators and without intentional vibration level changes. For this adaptive control logic, the dynamic relationship between AVC actuators and AVC sensors is represented by a mathematical model of Transfer Function (G). The mathematical model of Transfer Function (G) is continuously updated by the Least-Squares routine.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: May 12, 2015
    Assignee: Textron Innovations Inc.
    Inventors: David E. Heverly, II, Rupinder Singh, John Pappas
  • Patent number: 9018870
    Abstract: A control device for a rotating electrical machine, which is able to reduce a tracking delay of an actual output torque and actual currents with respect to a fluctuating torque command and fluctuating current commands and to reduce steady state deviations, is obtained. The control device includes a torque current computing unit; an actual current computing unit; a current feedback control unit; and a voltage control unit that controls voltages on the basis of the two-phase voltage commands. The torque command includes a fluctuation cancellation torque command for cancelling transmission torque fluctuations transmitted from the internal combustion engine, and the current feedback control unit includes a harmonic controller that calculates the two-phase voltage commands by using a characteristic of a transfer function corresponding to a periodic function of a frequency of the transmission torque fluctuations.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: April 28, 2015
    Assignee: Aisin AW Co., Ltd.
    Inventors: Hirokazu Kobayashi, Arinori Shimada, Takeshi Aoki, Subrata Saha, Ken Iwatsuki
  • Patent number: 9014861
    Abstract: A method for noise-reduced operation a wind is provided. The method includes determining a wind speed during normal operation of the wind turbine and determining a weighted rotor speed setpoint for a rotor of the wind turbine so that a noise emission of the wind turbine for the wind speed is reduced compared to nominal noise emission of the wind turbine at the wind speed. Using the weighted rotor speed setpoint, a torque setpoint for a power conversion assembly connected to the rotor is determined. The torque setpoint is applied to the power conversion assembly to control the wind turbine.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: April 21, 2015
    Assignee: General Electric Company
    Inventor: Sid Ahmed Attia
  • Publication number: 20150081110
    Abstract: The disclosure relates to a Synchronized Array of Vibration Actuators in a Network Topology providing synchronized arrays of low-cost, readily available vibration actuators to emulate superlative single actuators and bring together sets of these emulated high-performance actuators to create a broad range of desired control effects. Such actuator arrays may operate in both spatial and temporal modes, creating haptic effects that relate to the user via their position and orientation in space. The spatial mode may create h-pulses or the amplitude of a vibrational effect may change based on position of the device. The temporal mode may create vibrational effects that interact with the user to create an awareness of time. Additionally modes include performance, bandwidth, magnitude and reliability modes. The different control modalities may be combined together into a single vector control space, which spans the haptic capabilities of sets and/or subsets of actuators.
    Type: Application
    Filed: March 6, 2013
    Publication date: March 19, 2015
    Applicant: Coative Drive Corporation
    Inventors: John Houston, Rob Morris, Nathan Delson, Gabe Graham
  • Publication number: 20150051742
    Abstract: A system and method are provided for a variable speed compressor with a control module that controls an operating frequency of the variable speed compressor. The control module stores a prohibited frequency range that includes a resonant frequency of the variable speed compressor and an allowed upper frequency above the prohibited frequency range and an allowed lower frequency below the prohibited frequency range. The control module determines a requested frequency and operates the variable speed compressor at the allowed upper frequency for an upper frequency operating time and at the allowed lower frequency for a lower frequency operating time when the requested frequency is within the prohibited frequency range. The control module determines the upper frequency operating time and the lower frequency operating time such that a time-averaged frequency output over the upper frequency operating time and the lower frequency operating time corresponds to the requested frequency.
    Type: Application
    Filed: September 29, 2014
    Publication date: February 19, 2015
    Inventor: Jean-Luc M. Caillat
  • Patent number: 8955409
    Abstract: A rotating assembly includes a shaft having a driven end and a driving end. At least one rotating member coupled to the driven end. A support member is operatively connected to the at least one rotating member. A dynamic balancing system is operatively coupled to the support member. The dynamic balancing system includes a first balancing weight rotatably mounted to the support member. The first balancing weight is operatively connected to a first motor. A second balancing weight is rotatably mounted to the support member. The second balancing weight is operatively connected to a second motor. A controller is operatively connected to the first and second motors. The controller is configured and disposed to signal each of the first and second motors to rotate and to establish a desired position of the first balancing weight and the second balancing weight relative to at least one rotating member.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: February 17, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Paul A. Carvalho
  • Publication number: 20150039139
    Abstract: A vibration control system for a variable speed cooling system includes a programmable controller in communication with a variable frequency drive (VFD). The programmable controller is programmed to command the VFD to operate at frequencies only outside of one or more frequency lockout bands automatically calculated by the programmable controller based on a comparison of newly acquired variable speed cooling system vibration data with previously stored variable speed cooling system vibration specification data.
    Type: Application
    Filed: July 30, 2014
    Publication date: February 5, 2015
    Inventor: Gregory L. Meeuwsen
  • Publication number: 20150039138
    Abstract: A vibration suppressing apparatus and a vibration suppressing method thereof are provided. The vibration amplitude, vibration frequency, and vibration phase of a vibration suppressing unit are adjusted in real-time according to the vibration amplitude, vibration frequency and vibration phase of a vibration source.
    Type: Application
    Filed: November 12, 2013
    Publication date: February 5, 2015
    Applicant: Wistron Corporation
    Inventors: Ming-Chi Kao, Ming-Chih Chen, Po-Cheng Chen, Wen-Chieh Hsu
  • Patent number: 8924109
    Abstract: A method of controlling a vehicle includes detecting vibration in a drivetrain of the vehicle with a fore/aft accelerometer during a launch event. An operating regime of the vehicle is identified concurrently with the detected vibration when the detected vibration is outside a predefined allowable range. A control strategy of the drivetrain is adjusted to define a revised control strategy to avoid the identified operating regime. The revised control strategy is applied to control the drivetrain to mitigate vibration in the drivetrain.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: December 30, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Ronald F. Lochocki, Jr., Kenneth K. Lang
  • Patent number: 8914154
    Abstract: An active tuned vibration absorber (100) is disclosed for reducing vibrations in a structure, the vibration absorber comprising: a mount (104) for attachment to the structure; a moveable mass (106); a spring arrangement (108) connected between the mass and the mount; an actuator arrangement (110) for applying a force between the mass and the mount; a first sensor (112) for providing a first measurement indicative of a force exerted between the structure and the mount; a second sensor (114) for providing a second measurement indicative of an acceleration of the structure at or proximate to the mount; and a control system (116) for generating an actuator driving signal for driving the actuator using the first and second measurement, wherein the control system is operable to generate the actuator driving signal to cause the first measurement and second measurement to conform to a target relationship.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: December 16, 2014
    Assignee: Ultra Electronics Limited
    Inventors: Ian McGregor Stothers, Luca Benassi
  • Patent number: 8905369
    Abstract: The invention relates to a vibration isolation module (101) for a lithographic apparatus or an inspection apparatus. The module comprises a support frame (102), an intermediate body (103) and a support body (104) for accommodating the lithographic apparatus. The intermediate body is connected to the support frame by means of at least one spring element such that the intermediate body is a hanging body. The support body is connected to the intermediate body by means of at least one pendulum rod (108) such that the support body is a hanging body. The invention further relates to a substrate processing system comprising such vibration isolation module.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: December 9, 2014
    Assignee: Mapper Lithography IP B.V.
    Inventors: Jerry Johannes Martinus Peijster, Rogier Martin Lambert Ellenbroek, Guido De Boer
  • Publication number: 20140339827
    Abstract: A method and a control device for damping an oscillatory movement of the top of a tower of a wind turbine are provided. The described method includes (a) rotating a rotor being rotatably attached to a nacelle of the wind turbine with a rotational speed, and (b) yawing the nacelle of the wind turbine around an axis being aligned with the longitudinal axis of the tower with a yawing speed. Thereby, a yawing movement being associated with yawing the nacelle is coordinated with the oscillatory movement in such a manner that a gyroscopic torque resulting (i) from rotating the rotor and (ii) from yawing the rotor damps the oscillatory movement of the top of the tower. A wind turbine comprising such a control device and a computer program for controlling this method are also provided.
    Type: Application
    Filed: March 15, 2014
    Publication date: November 20, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Thomas Esbensen, Gustav Hoegh, Kristian Holm-Joergensen
  • Patent number: 8892338
    Abstract: A damping apparatus for an automobile is provided, capable of ensuring a high level of reliability while obtaining excellent damping effect with simple configuration. The damping apparatus for an automobile that reduces vibrations of an automobile body may include an actuator that is attached to the automobile body and drives an auxiliary mass; a current detector that detects a current flowing through an armature of the actuator; a section that detects a terminal voltage applied to the actuator; a calculation circuit that calculates an induced voltage of the actuator, and further calculates at least one of the relative velocity, relative displacement, and relative acceleration of the actuator, based on a current detected by the current detector and the terminal voltage; and a control circuit that drive-controls the actuator based on at least one of the relative velocity, relative displacement, and relative acceleration of the actuator calculated by the calculation circuit.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: November 18, 2014
    Assignee: Shinko Electric Co., Ltd.
    Inventors: Yasushi Muragishi, Hideaki Moriya, Yushi Sato, Takashi Fukunaga, Katsuyoshi Nakano, Hiroshi Nakagawa, Takayoshi Fujii, Takashi Onoue, Masaaki Narihisa
  • Patent number: 8874255
    Abstract: A method of control of rotation of a spindle device and a control system of a machine tool which enable machining without generation of chatter vibration without using special tools of variable pitch cutting edges or chatter vibration detecting means. The method of control of rotation of a spindle device and control system of a machine tool according to the present invention store spindle rotational speed change data, which determines how to change a rotational speed of a spindle in accordance with an instructed speed, linked with machining conditions and stability limit data, select, from an instructed spindle rotational speed and machining conditions and the stored stability limit data, spindle rotational speed change data giving less vibration, and use the selected spindle rotational speed change data as the basis to change the rotational speed of the spindle.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: October 28, 2014
    Assignee: Makino Milling Machine Co., Ltd.
    Inventors: Ryoichi Miyamoto, Haruka Nagahara, Sumie Nagahara, Osamu Nagahara
  • Patent number: 8862273
    Abstract: Technologies are generally described for automatically managing noise profile in a predefined area by determining a desired noise profile within the predefined area, monitoring noise levels and/or frequencies within the predefined area, and adjusting operational aspects of one or more noise emitting devices in order to achieve the desired noise profile within the predefined area. A noise management system according to embodiments may be centrally controlled or organized in a distributed manner with control modules on individual noise emitting devices interacting through wired or wireless media. Furthermore, the adjustment of the operations of the noise emitting devices in order to achieve the desired noise profile may be accomplished through computing an acoustic transfer function or measuring actual noise levels/frequencies.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: October 14, 2014
    Assignee: Empire Technology Development LLC
    Inventor: Lawrence J. Karr
  • Patent number: 8855823
    Abstract: A robot includes an angular velocity sensor that detects the vibration of a robot. A control device allows the robot to perform a trial operation and acquires the measurement result measured by the angular velocity sensor during the trial operation as vibration information and analyzes the acquired vibration information based on maker evaluating information that is stored in a database. In the maker evaluating information, vibration information and the operating speed appropriate to the installation situation of the robot at which the vibration information is measured are associated with each other. Then, the robot is operated at an operating speed selected based on the analysis result of the vibration information.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: October 7, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Daisuke Kirihara
  • Patent number: 8855826
    Abstract: Vibration in a mechanical system driven by a motor connected to a load is reduced by providing an angular position and an angular velocity of the motor to a linear feedback term and to a nonlinear feedback term. Outputs of the linear feedback term and the nonlinear feed term, and an optimal feedforward term determined off-line are summed to produce a summed signal, which is fed back to control a torque of the motor.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: October 7, 2014
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Mouhacine Benosman, Vijay Shilpiekandula, Scott A. Bortoff
  • Publication number: 20140297044
    Abstract: A method and system for adjusting a HIFU device compensates for shifts in transducer impedance so that the acoustic output from a HIFU transducer remains at a desired level. In accordance with a first aspect, the disclosure includes dynamically adjusting the tuning of a tuning network that causes the transducer/system to maintain an optimal power transfer to the acoustic output. In accordance with a second aspect, the disclosure monitors the acoustic output of the HIFU device and adjusts the electrical signal provided to the HIFU transducer to maintain a desired acoustic output.
    Type: Application
    Filed: March 17, 2014
    Publication date: October 2, 2014
    Applicant: Mirabilis Medica, Inc.
    Inventors: Gregory P. Darlington, Tim Etchells
  • Patent number: 8849465
    Abstract: A method controls a set of semi-active actuators arranged in an elevator system to minimize a vibration of an elevator car. The elevator system is represented with a model of a virtual elevator system having a single virtual semi-active actuator arranged to compensate a virtual disturbance. The virtual disturbance is determined using a motion profile of position of the elevator car during the operation and a disturbance profile of the virtual disturbance. A state of the elevator system is determined using the model of the virtual elevator system, the virtual disturbance and a signal indicative of a horizontal acceleration of the elevator car during the operation. Each actuator of the set of semi-active actuators is controlled based on the state of the elevator system and according to a control policy of the virtual semi-active actuator.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: September 30, 2014
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Yebin Wang, Scott A Bortoff
  • Publication number: 20140284105
    Abstract: A method for mitigating stick-slip oscillations in borehole equipment while drilling a borehole in an earth formation is described. The borehole equipment is modelled by a computational model for computer simulation. The model has elements representing a particular mechanical and physical behavior of the borehole equipment. In a simulated stick mode of the borehole equipment, physical quantities are loaded to the elements, which quantities represent an initial state of the borehole equipment prior to a transition from stick mode to slip mode. From a simulation of such transition, a time response of rotational speeds of a drive system and bottom hole assembly of the borehole equipment is recorded and a lower limit of the rotational speed of the drive system is determined for which the rotational driven speed of the bottom hole assembly is zero.
    Type: Application
    Filed: October 24, 2012
    Publication date: September 25, 2014
    Inventor: Andre Veltman
  • Patent number: 8824261
    Abstract: A system for peer-to-peer vibration mitigation in a distributing computing system includes a secondary communication interface over which chassis management electronics (e.g., a chassis-level controller) and/or system storage nodes may initiate communications to in order to affect system changes that may decrease vibration-related performance degradation in the system.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: September 2, 2014
    Assignee: Seagate Technology LLC
    Inventors: Michael Howard Miller, Richard Esten Bohn
  • Publication number: 20140229020
    Abstract: Higher-order vibration is controlled in an event that an impact load such as an aircraft impact is applied to a nuclear plant. A higher-order vibration control device 1 is installed in a nuclear plant having a reactor containment vessel and a nuclear reactor building 3. The higher-order vibration control device 1 includes an impactor 1a, a housing 1b which receives the reaction force of the impactor 1a, and a locking mechanism 2. The impactor 1a is installed on a floor 31 of the nuclear plant so as to roll in a horizontal direction with respect to the floor 31. The housing 1b encloses the impactor 1a and guides rolling of the impactor 1a. The locking mechanism 2 restrains rolling of the impactor 1a. In the event that a flying object may possibly impact the nuclear plant, the locking of the locking mechanism 2 is released.
    Type: Application
    Filed: January 29, 2014
    Publication date: August 14, 2014
    Applicant: Hitachi-GE Nuclear Energy, Ltd.
    Inventors: Ayumu MIYAJIMA, Hirokuni ISHIGAKI, Shohei ONITSUKA, Hidenori TANAKA
  • Publication number: 20140229021
    Abstract: Provided is a vibration control device, which enables the vibrations of a vibrating body, such as a rotary machine, to automatically be suppressed, without installing a vibration detection sensor on the vibration control device or vibrating body, and without controlling the rotational speed or phase of the vibration control device. The vibration control device (1), which is installed on a vibrating body (2) and controls the vibrations of the vibrating body (2), comprises a rotating shaft (11), a mass body (12) that is fixed to the rotating shaft (11), and an activation apparatus (13) that adds the power of a rotational motion, which is centered on the rotating shaft (11), to the mass body (12).
    Type: Application
    Filed: May 16, 2012
    Publication date: August 14, 2014
    Applicants: MITSUI ENGINEERING & SHIPBUILDING CO., LTD., NAGASAKI UNIVERSITY
    Inventors: Yutaka Yoshitake, Shuhei Kajiwara
  • Patent number: 8803465
    Abstract: A motion command is constructed based on an optimized acceleration pulse designed to control the spectral content of the commanded acceleration. By way of judicious design of the pulse shape, the majority of the energy in the command is contained in a narrow baseband and rolls off rapidly in frequencies outside that band. Additionally, the command can be constructed to suppress selected frequency content in one or more attenuation bands outside the baseband. The resulting motion command permits rapid motion control, while avoiding the excitation of unwanted resonant response in the system while remaining tolerant of system uncertainty.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: August 12, 2014
    Assignee: Exelis Inc.
    Inventors: David A. Smith, Patrick J. Argento
  • Patent number: 8768522
    Abstract: A set of semi-active actuators is arranged in an elevator system to compensate a vibration of an elevator car. The actuators are controlled in accordance with the control policy based on a measured signal including values of the parameter measured during the operation of the elevator system. The control policy is determined, based on a model of the elevator system, wherein the control policy includes a state function representing an operation of the elevator system and a function of displacement representing an operation of the set of semi-active actuators. The state function is approximated, using the model of the elevator system, as a first function of a parameter representing the vibration. The function of displacement is approximated, using the model of the elevator system, as a second function of the parameter.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: July 1, 2014
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Yebin Wang, Scott A. Bortoff
  • Patent number: 8766578
    Abstract: A method and apparatus are provided for ripple suppression of brushless DC motors at any given velocity irrespective of the limited bandwidth of the driver/amplifier supplying the excitation currents to the stator. In a preferred embodiment, Fourier coefficients of the current waveform are calculated as a function of rotor velocity by taking into account the driver/amplifier's finite bandwidth dynamics. For a given velocity, Fourier coefficients of the series approximating the waveform (control signal) are calculated as a function of the rotor velocity and the amplifier dynamics, to generate a waveform that results in no torque or velocity pulsations. When changing the motor speed, the coefficients are updated (recalculated) based on the new desired velocity (and amplifier dynamics), resulting in generation of an updated waveform that results in no torque or velocity pulsations at the new motor speed.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: July 1, 2014
    Assignee: Canadian Space Agency
    Inventor: Farhad Aghili
  • Publication number: 20140180484
    Abstract: A fan noise and vibration elimination system includes a sound wave sensor, a vibration sensor, a computing controller, a sound wave generator and a vibration generator. The sound wave sensor and the vibration sensor respectively receive noise and vibration produced by a fan during operation thereof to generate corresponding sound wave detection signal and vibration detection signal to the computing controller. Based on the received sound wave detection signal and vibration detection signal, the computing controller generates a sound wave cancel-out signal and a vibration cancel-out signal to the sound wave generator and the vibration generator, respectively, for the latter to generate a phase-inverted sound wave and a reverse vibration frequency to cancel the noise and the vibration produced by the operating fan.
    Type: Application
    Filed: December 23, 2012
    Publication date: June 26, 2014
    Applicant: ASIA VITAL COMPONENTS (CHINA) CO., LTD.
    Inventor: Te-Chung Wang
  • Patent number: 8761947
    Abstract: A system and method reduce lateral movement of a car in an elevator system by detecting vibration of the car as a vibration signal. A damping coefficient for a feedback signal is determined according to the vibration signal and a state of the elevator system. A semi-active actuator is arranged between the car and a roller guide assembly. The semi-active actuator includes a rheological fluid, and flow characteristics of the rheological fluid are actuated according to the feedback signal to reduce the lateral movement of the car.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: June 24, 2014
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventor: Yebin Wang
  • Patent number: 8751050
    Abstract: An examination and processing machine, in particular a lithography appliance, for use in the semiconductor industry, comprising a machine frame (1), an examination or processing device (5) for a work piece (4), a carriage (3) which is mounted on the machine frame (1) and can hold the work piece (4), a handling device (6) for positioning the work piece (4) on the carriage (3) and for removing it from the carriage (3), a series of oscillation isolators (2) for low-oscillation mounting of the machine frame (1), and individual control devices (30, 40, 20) for controlling the carriage (3), the handling device (6) and the oscillation isolators (2). These control devices (20, 30, 40) are subordinate to an overall control device (50), which acts as a host system, via a real-time bus (60).
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: June 10, 2014
    Assignee: Integrated Dynamics Engineering GmbH
    Inventor: Peter Heiland