公开(公告)号：US20240068811A1

公开(公告)日：2024-02-29

申请号：US18269286

申请日：2021-12-21

Applicant: The University of Newcastle Upon Tyne

Inventor： James Burdess ,  Barry Gallacher

IPC: G01C19/5698

CPC classification number: G01C19/5698

Abstract: Example implementations relate to gyroscopes comprising: a cyclic symmetric proof mass for bearing on a first surface degenerate, spatially orthogonal primary and secondary modes of vibration which become coupled in response to rotation about an axis of the proof mass; at least one actuator for inducing a primary surface acoustic wave of circumferential order n associated with the primary mode; and at least one sensor for sensing a secondary surface acoustic wave of circumferential order n associated with the secondary mode.

公开(公告)号：US10919617B2

公开(公告)日：2021-02-16

申请号：US15788434

申请日：2017-10-19

Applicant: Aurora Flight Sciences Corporation

Inventor： Riley Griffin ,  Edward Scott ,  Sean Humbert

IPC: B64C13/16 ,  G01C21/16 ,  G05D1/02 ,  B64C3/00 ,  G01B7/16 ,  G05D1/08 ,  G01B11/16 ,  B64C39/02 ,  G01C19/5698 ,  G01P15/18

Abstract: An aerial vehicle comprising an airframe, an aircraft flight controller to provide an output control signal, and a planar printed circuit board positioned on the airframe. The printed circuit board may include coupled thereto a processor, a rate gyroscope, and at least three accelerometers. The processor is configured to generate an actuation signal based at least in part on a feedback signal received from at least one of said rate gyroscope and the at least three accelerometers. The processor communicates the actuation signal to said aircraft flight controller, which is configured to adjust the output control signal based on said actuation signal.

公开(公告)号：US20210028759A1

公开(公告)日：2021-01-28

申请号：US16977827

申请日：2019-03-05

Applicant: Georgia Tech Research Corporation

Inventor： Farrokh Ayazi ,  Benoit Hamelin ,  Jeremy Yang

IPC: H03H9/02 ,  H03H9/24 ,  G01C19/5698

Abstract: Embodiments of the present disclosure relate generally to acoustically decoupled microelectromechanical system devices and, more particularly, to acoustically decoupled microelectromechanical system devices anchored upon phononic crystals. In some embodiments described herein, a device may comprise a resonator, a handle layer, and a pedestal disposed between the resonator and the handle layer, the pedestal connecting the resonator to the handle layer. In the devices described herein, the resonator and the handle layer may be non-coplanar. In some embodiments, the handle layer comprises a phononic crystal to acoustically decouple the resonator from the substrate of the handle layer.

公开(公告)号：US20200309525A1

公开(公告)日：2020-10-01

申请号：US16369640

申请日：2019-03-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ronald Joseph Lipka

IPC: G01C19/5698 ,  H03B5/32

Abstract: An aspect of the present disclosure concerns an oscillator circuit including a driver circuit that includes a first amplifier and a current detector where the first amplifier produces an oscillation voltage signal, where the current detector detects an oscillation current signal and produces a drive voltage signal, and where the oscillation current signal corresponds to difference in voltage between the oscillation voltage signal and the drive voltage signal; a feedback circuit that includes a second amplifier receiving the oscillation voltage signal and the drive voltage signal, to produce a feedback voltage signal to the driver circuit; and an oscillator that oscillates at a frequency determined in accordance with the drive voltage signal.

公开(公告)号：US20200173780A1

公开(公告)日：2020-06-04

申请号：US16638082

申请日：2018-08-16

Applicant: Agency for Science, Technology and Research

Inventor： Guoqiang Wu ,  Jifang Tao ,  Alex Yuandong Gu ,  Geng Li Chua

IPC: G01C19/5698

Abstract: Various embodiments may provide a gyroscope. The gyroscope may include a piezoelectric substrate, an excitation transducer configured to generate a surface acoustic wave, and a sensing transducer configured to receive the surface acoustic wave generated by the excitation transducer. The gyroscope may additionally include a mass dot array between the excitation transducer and the sensing transducer, the mass dot array configured to generate a stress on the piezoelectric substrate based on a rotation of said gyroscope upon the surface acoustic wave passing through the mass dot array. The gyroscope may also include a light source, and an optical detector configured to receive one or more light beams generated by the light source to determine the rotation of the gyroscope based on a property of the one or more light beams. The property of the one or more light beams may be variable based on the stress on the piezoelectric substrate.

公开(公告)号：US10281277B1

公开(公告)日：2019-05-07

申请号：US15347748

申请日：2016-11-09

Applicant: HRL Laboratories, LLC

Inventor： Raviv Perahia ,  Logan D. Sorenson ,  Lian X. Huang ,  Hung Nguyen ,  David T. Chang ,  Deborah J. Kirby

IPC: G01C19/58 ,  G01C19/64 ,  G01C19/5698 ,  G10K11/20

Abstract: A phononic travelling wave gyroscope. The gyroscope includes a phononic waveguide including at least one loop. The phase change incurred by phonons propagating around the loop is compared to a reference phase, and utilized to form an estimate of the rotational rate of the gyroscope.

公开(公告)号：US20180321037A1

公开(公告)日：2018-11-08

申请号：US15771453

申请日：2016-10-28

Applicant: Georgia Tech Research Corporation

Inventor： Haoran Wen ,  Farrokh Ayazi

IPC: G01C19/5698 ,  G01C19/5719 ,  G01C19/5684 ,  H03H9/02

CPC classification number: G01C19/5698

Abstract: A bulk acoustic wave resonator apparatus includes a resonator member, at least one anchor structure coupling the resonator member to a substrate, and a comb-drive element connected to the resonator member. The comb-drive element includes first comb fingers protruding from the resonator member, and second comb fingers of a different material than the first comb fingers interdigitated with the first comb fingers to define sub-micron capacitive gaps therebetween. Respective sidewalls of the first comb fingers are oppositely-tapered relative to respective sidewalls of the second comb fingers along respective lengths thereof, such that operation of the comb-drive element varies the sub-micron capacitive gaps at the respective sidewalls thereof. Related devices and fabrication methods are also discussed.

公开(公告)号：US09817014B2

公开(公告)日：2017-11-14

申请号：US14294352

申请日：2014-06-03

Applicant: Mnemonics, Inc.

Inventor： Nikolai Kozlovski

IPC: G01C22/00 ,  G01C19/5698 ,  G01P3/481

CPC classification number: G01P3/481

Abstract: A method is provided for determining a number of revolutions per minute (RPM) of a rotating object. The method includes transmitting interrogation signals at a regular period from a fixed antenna positioned adjacent to the rotating object. The method also includes transmitting echo signals from a sensor antenna positioned on the rotating object, in response to the interrogation signals. The method also includes counting a number of echo signals detected by the fixed antenna, during one revolution of the object. The method also includes determining the RPM of the rotating object based on the number of response signals and the regular period of the signals. A system is also provided for determining the number of revolutions per minute (RPM) of the rotating object.

公开(公告)号：US20160217578A1

公开(公告)日：2016-07-28

申请号：US14254470

申请日：2014-04-16

Applicant: Red Lotus Technologies, Inc.

Inventor： Matthew Can ,  Lahiru Jayatilaka

IPC: G06T7/00 ,  G08C23/02 ,  G06T11/60 ,  G01C3/00 ,  G01C19/5698 ,  G06T17/05 ,  G08C23/04 ,  G08C23/00

CPC classification number: G01C3/00 ,  G01C19/5698 ,  G01V3/12 ,  G06T7/73 ,  G06T11/60 ,  G06T17/05 ,  G06T2207/10044 ,  G06T2207/10048 ,  G06T2207/30212 ,  G08C23/00 ,  G08C23/02 ,  G08C23/04 ,  H04M2250/10

Abstract: Systems and methods for mapping sensor feedback onto virtual representations of detection surfaces are disclosed herein. A system configured in accordance with an embodiment of the present technology can, for example, record and process feedback from a sensing device (e.g., a metal detector), record and process user inputs from a user input device (e.g. user-determined locations of disturbances in the soil surface), determine the 3D position, orientation, and motion of the sensing device with respect to a detection surface (e.g., a region of land being surveyed for landmines) and visually integrate captured and computed information to support decision-making (e.g. overlay a feedback intensity map on an image of the ground surface). In various embodiments, the system can also determine the 3D position, orientation, and motion of the sensing device with respect to the earth's absolute coordinate frame, and/or record and process information about the detection surface.

Abstract translation: 本文公开了将传感器反馈映射到检测表面的虚拟表示上的系统和方法。 根据本技术的实施例配置的系统可以例如记录和处理来自感测设备（例如，金属检测器）的反馈，记录和处理来自用户输入设备的用户输入（例如，用户确定的位置 确定感测装置相对于检测表面（例如，被调查用于地雷的土地区域）的3D位置，方向和运动，并将捕获和计算的信息视觉上整合以支持决策 （例如，在地面图像上叠加反馈强度图）。 在各种实施例中，系统还可以确定感测装置相对于地球绝对坐标系的3D位置，方向和运动，和/或记录和处理关于检测表面的信息。

公开(公告)号：US5265473A

公开(公告)日：1993-11-30

申请号：US889278

申请日：1992-05-28

Applicant: Hideo Funabashi

Inventor： Hideo Funabashi

IPC: G01C19/56 ,  G01C19/5698 ,  G01P15/097 ,  G01P15/10 ,  G01P15/09

CPC classification number: G01P15/097 ,  G01P2015/0817

Abstract: An elongated mass is extended from the center of a U-shaped support frame and oscillators are disposed between the mass and leg portions of the support frame. The oscillators each have a flat, plate-like configuration which oscillates in a distorted-sliding oscillation mode.