公开(公告)号：US10236858B1

公开(公告)日：2019-03-19

申请号：US14836462

申请日：2015-08-26

申请人： HRL LABORATORIES, LLC

发明人： Logan Sorenson ,  Raviv Perahia ,  Hung Nguyen ,  David Chang

IPC分类号： H03H9/02 ,  H01L41/047 ,  H01L41/113 ,  H03H9/17 ,  H03H9/25 ,  H03F3/45

摘要： An electromechanical resonator including a drive electrode set having at least one pair of alternating pole interdigitated drive electrodes and including a sense electrode set having at least one pair of alternating pole interdigitated sense electrodes.

公开(公告)号：US11841243B1

公开(公告)日：2023-12-12

申请号：US17668145

申请日：2022-02-09

申请人： HRL Laboratories, LLC

发明人： Matthew Pelliccione ,  Logan Sorenson ,  David Chang

IPC分类号： G01C25/00 ,  G01C19/5726

CPC分类号： G01C25/00 ,  G01C19/5726

摘要： A Coriolis vibratory gyroscope having a resonator with at least a first and a second n=2 vibratory modes of same resonance frequency in a resonator plane; first and second sensing circuits for generating first and second sense signals in response to a motion of the resonator along a major axis of the first and second vibratory modes; a first drive circuit for driving the resonator in the first vibratory mode with a first drive signal; a second drive circuit for simultaneously driving the resonator in the second vibratory mode with a second drive signal; wherein said first signal has a first frequency equal to a resonant frequency of said resonator in said first vibratory mode, and said second signal has the same frequency as the first signal, modulated in amplitude with a second frequency.

公开(公告)号：US11835339B1

公开(公告)日：2023-12-05

申请号：US17713789

申请日：2022-04-05

申请人： HRL Laboratories, LLC

发明人： Logan Sorenson ,  David Chang ,  Hung Nguyen ,  Matthew Pelliccione ,  Raviv Perahia

IPC分类号： G01C19/5776

CPC分类号： G01C19/5776

摘要： A CVG having first and second degenerate resonator modes with each a damping rate; drive circuits for causing the resonator to oscillate in the first and second modes in response to first and second drive signals; first and second sense circuits for generating first and second sense signals in response to the resonator oscillating in the first and second modes; a signal processing circuit having control loops for generating the first and second drive signals based on the first and second sense signals; and first and second damping feedback circuits for generating first and second damping feedback signals proportional to the first and second damping rates; an adding the damping feedback signals to the first and second drive signals.

公开(公告)号：US11561095B2

公开(公告)日：2023-01-24

申请号：US16847248

申请日：2020-04-13

申请人： HRL Laboratories, LLC

发明人： Lian X. Huang ,  Logan Sorenson ,  Raviv Perahia ,  Hung Nguyen ,  David T. Chang

IPC分类号： B81C1/00 ,  H01L41/00 ,  G01C19/5712 ,  G01C19/5684 ,  G01C19/5677

摘要： A resonator includes an anchor, an outer stiffener ring on an outer perimeter of the resonator, and a plurality of curved springs between the anchor and the outer stiffener ring.