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    System for mapping force transmission from a plurality of force-imparting points to each force-measuring device and related method
    3.
    发明授权
    System for mapping force transmission from a plurality of force-imparting points to each force-measuring device and related method 有权

    公开(公告)号：US11898925B2

    公开(公告)日：2024-02-13

    申请号：US17205862

    申请日：2021-03-18

    Applicant: UltraSense Systems, Inc.

    Inventor： Zhongxuan Tu ,  Deliang Tao ,  Chunlei Qian ,  Sina Akhbari ,  Hao-Yen Tang

    IPC: G01L5/167 ,  G01L1/16 ,  G01L25/00 ,  G01L27/00 ,  G06F3/044 ,  G06F3/041

    CPC classification number: G01L5/167 ,  G01L1/16 ,  G01L25/00 ,  G01L27/002 ,  G06F3/0418

    Abstract: A system for mapping data of force transmission from a plurality of force-imparting points to each force-measuring device is disclosed. A linear actuator assembly includes a Z-axis actuator and a slider. A load cell is secured to the slider, such that actuation of the Z-axis actuator is mechanically coupled to a vertical movement of the load cell via the slider. A sample stage includes a sample stage positioner and is configured to retain a sample including at least one force-measuring device. The load cell is configured to impart a time-varying applied force to the sample. The controller is configured to control actuation of the sample positioner to position the load cell at each one of a plurality of force-imparting points on the sample and, for each respective force-imparting point, control the actuation of the Z-axis actuator. A computer is configured to generate a map of data of force transmission from the plurality of force-imparting points to the force-measuring device in accordance with digital transducer data obtained from the force-measuring device upon the imparting of the time-varying applied force at each force-imparting point.

    PIEZOELECTRIC STRAIN SENSOR UNIT FOR A ROLLING BEARING
    4.
    发明公开
    PIEZOELECTRIC STRAIN SENSOR UNIT FOR A ROLLING BEARING 审中-公开

    公开(公告)号：US20230204444A1

    公开(公告)日：2023-06-29

    申请号：US18115894

    申请日：2023-03-01

    Applicant: Aktiebolaget SKF

    Inventor： Andrew Campbell ,  Hans Soetens ,  Allan Thomson

    IPC: G01L5/167 ,  G01L1/16 ,  G01L5/22

    CPC classification number: G01L5/167 ,  G01L1/16 ,  G01L5/228

    Abstract: A piezoelectric strain sensor unit for a rolling bearing includes a piezoelectric strain sensor, and a sensor holder provided with a main body having a front face intended to be into contact with a component of the rolling bearing and a rear face, and with at least two flexible arms mounted on the main body and supporting opposite ends of the piezoelectric strain sensor, the piezoelectric strain sensor being axially located on the side of the rear face of the main body while remaining spaced apart from the rear face. The sensor holder is provided with a central pin which protrudes axially with regard to the front face of the main body and which is axially moveable with regard the main body, the central pin axially abutting onto the piezoelectric strain sensor.

    Two-dimensional distributed mode actuator
    5.
    发明授权
    Two-dimensional distributed mode actuator 有权

    公开(公告)号：US11356782B2

    公开(公告)日：2022-06-07

    申请号：US16886989

    申请日：2020-05-29

    Applicant: Google LLC

    Inventor： Mark William Starnes ,  James East

    IPC: H04R17/10 ,  H01L41/09 ,  G01L5/167 ,  H01L41/047 ,  H01L41/253 ,  H04R7/04

    Abstract: Methods, systems, and apparatus for using a two-dimensional distributed mode actuator. One of the systems includes a transducer adapted to create a force to cause vibration of a load to generate sound waves, the transducer having a first width along a first axis; a transfer portion connected to the transducer along a first side parallel to the first axis, and having a second width along the first axis that is less than the first width; and a stub connected to the transfer portion along a second side of the transfer portion that is parallel to the first axis and an opposite side from the first side connected to the transducer, having a third width that is greater than the second width, and having a surface adapted to connect to the load to transfer the force received from the transducer through the transfer portion to the load.

    Piezoelectric sensor and robot hand
    7.
    发明授权
    Piezoelectric sensor and robot hand 有权

    公开(公告)号：US12078565B2

    公开(公告)日：2024-09-03

    申请号：US17852451

    申请日：2022-06-29

    Applicant: SEIKO EPSON CORPORATION

    Inventor： Takayuki Yonemura

    IPC: G01L5/167 ,  B25J13/08 ,  B25J19/02

    CPC classification number: G01L5/167 ,  B25J13/085 ,  B25J19/028

    Abstract: A piezoelectric sensor includes an elastic body having a first surface, a regulatory section which is disposed at a position where the regulatory section faces the first surface of the elastic body, and which is configured to limit a deformation of the elastic body, and a first piezoelectric element which is partially fixed to the regulatory section, and which deforms in accordance with the deformation of the elastic body, wherein the first piezoelectric element outputs a voltage signal which increases and decreases from a reference voltage in accordance with a direction of the deformation.

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