公开(公告)号：US12044710B2

公开(公告)日：2024-07-23

申请号：US17609463

申请日：2020-05-04

申请人： Siemens Energy Global GmbH & Co. KG

发明人： Franz Klammler ,  Mario Scala

IPC分类号： G01R19/00 ,  G01H13/00 ,  G01R23/16

CPC分类号： G01R19/0015 ,  G01H13/00 ,  G01R23/16

摘要： A method for detecting a direct current component in an inductive device, for example in a transformer or choke, includes using a computer for recording an oscillation signal, either of sound emitted from the device or of mechanical oscillation of the device, determining the frequency range of the oscillation signal, determining the value of at least one odd frequency in the frequency range, comparing the value of the odd frequency with the value of at least one even frequency in the frequency range, and determining a direct current component when the value of the odd frequency differs from the even frequency by a predefined amount. The method can be carried out without measuring equipment in the interior of an inductive device and without the involvement of an expert. A computer program product for carrying out the method is also provided.

公开(公告)号：US11920931B2

公开(公告)日：2024-03-05

申请号：US17307569

申请日：2021-05-04

申请人： MURATA MANUFACTURING CO., LTD.

发明人： Heikki Kuisma

IPC分类号： G01D1/16 ,  G01C19/5712 ,  G01C19/5762 ,  G01D1/18 ,  G01D3/08 ,  G01D5/24 ,  G01H11/06 ,  G01H13/00 ,  G01R31/26 ,  G01R31/28 ,  G01R31/3187 ,  H04B1/04 ,  H04B14/00

CPC分类号： G01C19/5712 ,  G01C19/5762 ,  G01D1/16 ,  G01D1/18 ,  G01D3/08 ,  G01D5/24 ,  G01H11/06 ,  G01H13/00 ,  G01R31/2644 ,  G01R31/282 ,  G01R31/2829 ,  G01R31/2856 ,  G01R31/3187 ,  H04B2001/0491 ,  H04B14/002

摘要： A microelectromechanical gyroscope which comprises one or more Coriolis masses driven by a drive transducer and a force-feedback system. The force-feedback circuit comprises first and second sideband modulators and the self-test circuit comprises first and second sideband demodulators.

公开(公告)号：US11808736B2

公开(公告)日：2023-11-07

申请号：US17365743

申请日：2021-07-01

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Hiroaki Urano ,  Akihide Shimmei

IPC分类号： G01N29/12 ,  G01M7/08 ,  G01N29/46 ,  G01H13/00 ,  G01M7/02 ,  H02K3/34 ,  G01N29/04

CPC分类号： G01N29/12 ,  G01H13/00 ,  G01M7/02 ,  G01M7/08 ,  G01N29/045 ,  G01N29/46 ,  G01N2291/02827 ,  G01N2291/2693 ,  H02K3/345

摘要： The fixing force evaluation method of the present embodiment includes the natural frequency measurement step of measuring the natural frequency of the stator in which the tooth portions and the stator coil are fixed by the insulating paper, and the fixing force evaluation step of evaluating that the fixing force of the insulating paper is larger, when the natural frequency of the stator measured in the natural frequency measurement step is equal to more than a predetermined determination frequency, compared to when the natural frequency is lower than the determination frequency. Thus, since the fixing force of the insulating paper is evaluated in the fixing force evaluation step based on the natural frequency of the stator measured in the natural frequency measurement step, the fixing force of the insulating paper can be evaluated by measuring the natural frequency of the stator without destroying the stator.

公开(公告)号：US11788882B2

公开(公告)日：2023-10-17

申请号：US17048252

申请日：2018-06-05

申请人： UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

发明人： Dukhyun Choi ,  Hee Jae Hwang ,  Jiseop Yoo ,  Yeonseok Jeong

IPC分类号： G01H13/00 ,  G01N27/60

CPC分类号： G01H13/00 ,  G01N27/60

摘要： Disclosed is a wire sensing apparatus including a vibrable wire part; a generator configured to generate electrostatic force through interference with the wire part to generate electric energy; and a sensor part connected to at least one of the wire part and the generator and configured to measure a resonance frequency of the wire part to detect a state of an object. According to such a configuration, a sensor applicable to various conditions can be provided at low cost.

公开(公告)号：US11769050B2

公开(公告)日：2023-09-26

申请号：US17355479

申请日：2021-06-23

申请人： Toyota Jidosha Kabushiki Kaisha

发明人： Eiji Nakatsugawa ,  Seiji Yamashita ,  Yasushi Dohnoue ,  Hidenori Morita

IPC分类号： G01H15/00 ,  G06N3/04 ,  G06N3/08 ,  G01H13/00

CPC分类号： G06N3/08 ,  G01H15/00 ,  G06N3/04 ,  G01H13/00

摘要： A predicting device, including a processor configured to: acquire displacement data that expresses a time series of displacements at respective points in time that are input to a vibration proofing member, and velocity data that expresses a time series of velocities at respective points in time that are input to the vibration proofing member; generate first load data of the vibration proofing member by inputting the acquired displacement data and velocity data into a model that is for inferring, from the displacement data and the velocity data, load data; generate second load data of the vibration proofing member by inputting the acquired displacement data and velocity data into a regression trained model that is for inferring, from the displacement data and the velocity data, load data; and infer load data relating to the vibration proofing member by adding together the generated first load data and the generated second load data.

公开(公告)号：US20230204410A1

公开(公告)日：2023-06-29

申请号：US17817975

申请日：2022-08-05

申请人： Viken Detection Corporation

发明人： Hans Weedon ,  Gilbert W. McKenna ,  Richard Carey ,  David Perez ,  Peter J. Rothschild

IPC分类号： G01H13/00 ,  G01N29/12 ,  G01N29/24

CPC分类号： G01H13/00 ,  G01N29/12 ,  G01N29/2431 ,  G01N33/202

摘要： A device, and corresponding method, for determining a material composition of the pipe includes a probe, a resonance frequency measurement circuit, and a material analyzer. The probe includes an oscillator circuit and can be inserted into an interior cavity of the type. The probe also can emit electromagnetic radiation into the interior cavity via the oscillator circuit. The frequency measurement circuit is in operative communication with the oscillator circuit and is configured to output resonant frequency measurement data indicative of a resonance frequency of the oscillator circuit when inserted into the interior cavity. The material analyzer can receive the resonance frequency measurement data, and an additional measurement, and can output an indication of material composition of the pipe based on the resonance frequency measurement data and the additional measurement.

公开(公告)号：US20190234908A1

公开(公告)日：2019-08-01

申请号：US16262739

申请日：2019-01-30

申请人： HEXAGON TECHNOLOGY CENTER GMBH

发明人： Silvan MEILE ,  Claudio ISELI

IPC分类号： G01N29/12

CPC分类号： G01N29/12 ,  G01H13/00 ,  G01M7/025 ,  G01N29/045 ,  G01N29/348 ,  G01N29/4436 ,  G01N29/4472 ,  G01N2291/014 ,  G01N2291/0231 ,  G01N2291/0234 ,  G01N2291/0258 ,  G01N2291/02827 ,  G01N2291/0289 ,  G01N2291/102 ,  G01N2291/267

摘要： Object analysis comprising measuring a frequency-dependent natural oscillation behavior of the object by dynamically-mechanically exciting the object in a defined frequency range (f) by means of generating a body oscillation by applying a test signal, and detecting a body oscillation generated in the object on account of the exciting. Moreover, the method involves simulating a frequency-dependent natural oscillation behavior for the object by generating a virtual digital representation of the object, and carrying out a finite element analysis on the basis of the virtual representation comprising dynamically exciting, in a simulated manner, the virtual representation into a virtual frequency range for generating a virtual body oscillation, calculating the virtual body oscillation generated in the object on account of the exciting in a simulated manner, and deriving an object state on the basis of a comparison of the measured natural oscillation behavior and the simulated frequency-dependent natural oscillation behavior.

公开(公告)号：US20190011328A1

公开(公告)日：2019-01-10

申请号：US15641582

申请日：2017-07-05

申请人： HIWIN TECHNOLOGIES CORP.

发明人： YI-JUN FENG ,  MIN-HSIU WU

IPC分类号： G01M13/04 ,  G01P3/00 ,  G01H13/00 ,  G01M99/00

CPC分类号： G01M13/045 ,  G01H1/06 ,  G01H13/00 ,  G01M99/008 ,  G01P3/00

摘要： A method for performing vibration detection on a feed system of a machine tool is implemented by a detecting device, and includes: calculating a target frequency range associated with a rotation speed of the machine tool; detecting vibration of the feed system in a static state; calculating a smoothed signal according to detected result, the smoothed signal including a plurality of noise amplitude values distributed across the target frequency range; identifying a measurement frequency that corresponds with a smallest one of the noise amplitude values; calculating a suggested rotation speed based on the measurement frequency; and detecting vibration of the feed system rotating at the suggested rotation speed.

公开(公告)号：US20180274385A1

公开(公告)日：2018-09-27

申请号：US14905641

申请日：2015-12-11

申请人： William Forrester SEELY ,  Xu FU ,  Mustafa Tekin DOKUCU ,  Ronghui ZHOU ,  General Electric Company

发明人： William Forrester Seely ,  Xu Fu ,  Mustafa Tekin Dokucu ,  Ronghui Zhou

IPC分类号： F01D21/14 ,  F01D21/00 ,  G05B13/04 ,  G01H13/00

CPC分类号： F01D21/14 ,  F01D21/003 ,  F01D21/04 ,  F01D25/06 ,  F02C9/00 ,  F04D27/0261 ,  F04D29/665 ,  F05D2240/24 ,  F05D2260/81 ,  F05D2260/96 ,  F05D2270/11 ,  F05D2270/114 ,  F05D2270/304 ,  F05D2270/312 ,  F05D2270/313 ,  F05D2270/334 ,  F05D2270/54 ,  F05D2270/71 ,  G01H1/006 ,  G01H13/00 ,  G05B13/042

摘要： A flutter control system for a turbine includes a processor. The processor is configured to detect blade flutter of a turbine. The blade flutter indicates that blades of the turbine are in a deflected position different from a nominal operating position. The processor is configured to control operational parameters of the turbine that reduce or eliminate the blade flutter to improve the reliability and efficiency of the turbine.

公开(公告)号：US20180264526A1

公开(公告)日：2018-09-20

申请号：US15920215

申请日：2018-03-13

申请人： LG ELECTRONICS INC.

发明人： Wonsu KIM ,  Sungdu KWON ,  Salkmann JI ,  Samnyol HONG

IPC分类号： B08B3/12 ,  G06T7/20 ,  G02B27/00

CPC分类号： B08B3/12 ,  B08B3/10 ,  B08B17/02 ,  G01H9/00 ,  G01H13/00 ,  G02B27/0006 ,  G06T7/20

摘要： A device for cleaning an object surface, including a substrate provided on the object surface, a plurality of electrodes provided on the substrate, a dielectric layer provided on the substrate to cover the electrodes, and a control device supplying an alternating-current (AC) power to the electrodes including supplying a first AC power having a predetermined first frequency and a predetermined first voltage to the electrodes during a first time period to vibrate a droplet on the surface of the object by a periodic change of an electrostatic force generated at the electrodes, the first frequency being set to the resonant frequency of the liquid droplet.