公开(公告)号：US3417608A

公开(公告)日：1968-12-24

申请号：US54966666

申请日：1966-05-12

Applicant: ELECTRONIQUE APPLIQUEE

Inventor： PIERRE BARIGANT

IPC: G01L1/10 ,  G01N3/32

CPC classification number: G01N3/32 ,  G01L1/10

公开(公告)号：US3329027A

公开(公告)日：1967-07-04

申请号：US61104256

申请日：1956-09-20

Applicant: BOSCH ARMA CORP

Inventor： DAVIDSON GARETH M ,  FRANKLIN MEYER

IPC: G01L1/10 ,  G01P15/10

CPC classification number: G01L1/10 ,  G01P15/10

公开(公告)号：US3106837A

公开(公告)日：1963-10-15

申请号：US80012859

申请日：1959-03-18

Applicant: PLUMB LEWIS R ,  MILLER LEONIDAS C

Inventor： PLUMB LEWIS R ,  MILLER LEONIDAS C

IPC: G01L1/10

CPC classification number: G01L1/10 ,  G01M13/045

公开(公告)号：US3002391A

公开(公告)日：1961-10-03

申请号：US67682457

申请日：1957-08-07

Applicant: BORG WARNER

Inventor： HOLMES PAUL J

IPC: G01L1/10 ,  G01P15/10 ,  G01P15/18

CPC classification number: G01P15/18 ,  G01L1/10 ,  G01P15/10

公开(公告)号：US2720112A

公开(公告)日：1955-10-11

申请号：US31453252

申请日：1952-10-13

Applicant: ANDRE COYNE ,  JEAN BELLIER

Inventor： ANDRE COYNE ,  JEAN BELLIER

IPC: E04C5/08 ,  G01L1/10 ,  G01L5/10

CPC classification number: G01L5/108 ,  E04C5/08 ,  G01L1/10 ,  G01L5/10

公开(公告)号：US12123797B2

公开(公告)日：2024-10-22

申请号：US17795090

申请日：2021-01-27

Applicant: Danmarks Tekniske Universitet

Inventor： Marie Brøns ,  Jon Juel Thomsen

IPC: G01L5/04 ,  G01L1/10 ,  G01M7/02

CPC classification number: G01L5/042 ,  G01L1/10 ,  G01M7/02

Abstract: Disclosed is a method for estimating the tension of a tension member (1), the method comprising the steps of exciting the tension member (1) such as to induce vibration of the tension member (1), sampling the vibration to obtain a first vibration signal (VS1), modifying the mass and/or the rotational inertia of the tension member (1) such as to provide a modified tension member (1a), exciting the modified tension member (1a) such as to induce vibration of the modified tension member (1a), sampling the vibration of the modified tension member to obtain a second vibration signal (VS2), and estimating the tension of the tension member based on a comparison of the first vibration signal (VS1) and the second vibration signal (VS2). Disclosed is also a system for estimating the tension of a tension member.

公开(公告)号：US11644370B2

公开(公告)日：2023-05-09

申请号：US16569047

申请日：2019-09-12

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Emmanuel Marchais ,  Kathryn Rose Holland ,  Carl Lennart Ståhl ,  Eric Lindemann

IPC: G01L1/08 ,  G01L1/10 ,  G01L1/14 ,  G01L1/18 ,  G01L5/105 ,  G06F3/01 ,  H02M1/44

CPC classification number: G01L1/086 ,  G01L1/10 ,  G01L1/14 ,  G01L1/183 ,  G01L5/105 ,  G06F3/016 ,  H02M1/44

Abstract: A system for performing force sensing with an electromagnetic load may include a signal generator configured to generate a signal for driving an electromagnetic load and a processing subsystem configured to monitor at least one operating parameter of the electromagnetic load and determine a force applied to the electromagnetic load based on a variation of the at least one operating parameter.

公开(公告)号：US20180359004A1

公开(公告)日：2018-12-13

申请号：US15616051

申请日：2017-06-07

Applicant: General Electric Company

Inventor： Yongjae Lee ,  Joseph Iannotti

IPC: H04B5/00 ,  G01K11/22 ,  G01L1/10 ,  H04B15/00

CPC classification number: H04B5/0056 ,  G01H1/003 ,  G01K11/22 ,  G01K11/265 ,  G01L1/10 ,  G01L1/165 ,  G01L3/10 ,  G01L9/0025 ,  G01N29/043 ,  G01N29/2462 ,  G01N29/2481 ,  G01N2291/0258 ,  G01N2291/0423 ,  H01P1/068 ,  H01Q7/00 ,  H01Q21/29 ,  H04B15/00

Abstract: A sensor system includes one or more rotor antennas on a shaft that moves within a stator bracket one or more of around an axis of the sensor system or along the axis of the sensor system, the one or more rotor antennas configured to communicate sensed data with one or more stator antennas on the stator bracket. Each rotor antenna has a rotor signal trace disposed on an outer rotor side of a dielectric substrate of the rotor antenna and a rotor return trace disposed on the outer rotor side of the dielectric substrate, wherein the rotor signal trace and the rotor return trace are not concentric with respect to each other. The one or more rotor antennas are configured to extend one or more of radially around an outer surface of the shaft of a sensor or along the outer surface of the shaft of the sensor.

公开(公告)号：US20180164360A1

公开(公告)日：2018-06-14

申请号：US15890468

申请日：2018-02-07

Applicant: FUJITSU LIMITED

Inventor： Masakazu Kishi ,  Hajime Kubota ,  Masayuki ITOH

IPC: G01R29/22 ,  H03H9/13 ,  H03H9/10 ,  H03B5/32 ,  G01L9/00 ,  G01L1/16 ,  G01L1/10

CPC classification number: G01R29/22 ,  G01L1/10 ,  G01L1/162 ,  G01L9/008 ,  H03B5/32 ,  H03H9/1021 ,  H03H9/13

Abstract: A crystal unit includes: a crystal blank; an excitation electrode formed on the crystal blank and excites a main vibration of the crystal blank; a housing that accommodates the crystal blank; and a sub-vibration electrode formed on the housing and excites a sub-vibration of the crystal blank.And a method for inspecting a crystal unit, the method includes: generating a sub-vibration in a crystal blank by applying an input signal to a sub-vibration electrode formed on a housing, which accommodates the crystal blank, via external electrodes which are electrically coupled to the sub-vibration electrode and formed on the outer surface of the housing; obtaining an output of the crystal unit via the external electrodes; obtaining frequency characteristics of impedance between the external electrodes based on the output; and comparing the obtained frequency characteristics with the reference frequency characteristics indicating the quality of the crystal unit.

公开(公告)号：US09921257B2

公开(公告)日：2018-03-20

申请号：US14974434

申请日：2015-12-18

Applicant: FUJITSU LIMITED

Inventor： Masakazu Kishi ,  Hajime Kubota ,  Masayuki Itoh

IPC: G01R29/22 ,  H03H9/10 ,  H03H9/13 ,  H03B5/32 ,  G01L1/16 ,  G01L9/00 ,  G01L1/10

CPC classification number: G01R29/22 ,  G01L1/10 ,  G01L1/162 ,  G01L9/008 ,  H03B5/32 ,  H03H9/1021 ,  H03H9/13

Abstract: A crystal unit includes: a crystal blank; an excitation electrode formed on the crystal blank and excites a main vibration of the crystal blank; a housing that accommodates the crystal blank; and a sub-vibration electrode formed on the housing and excites a sub-vibration of the crystal blank.And a method for inspecting a crystal unit, the method includes: generating a sub-vibration in a crystal blank by applying an input signal to a sub-vibration electrode formed on a housing, which accommodates the crystal blank, via external electrodes which are electrically coupled to the sub-vibration electrode and formed on the outer surface of the housing; obtaining an output of the crystal unit via the external electrodes; obtaining frequency characteristics of impedance between the external electrodes based on the output; and comparing the obtained frequency characteristics with the reference frequency characteristics indicating the quality of the crystal unit.