公开(公告)号：US20190078885A1

公开(公告)日：2019-03-14

申请号：US16071531

申请日：2017-01-20

Applicant: Moog Inc.

Inventor： Michael Tracy ,  Martin Turon ,  Derek Tat

IPC: G01C19/5677 ,  G01C19/5776

CPC classification number: G01C19/5677 ,  G01C19/5776

Abstract: An angular rate sensor has a ring, a plurality of sensor-drivers, circuitry, a controller, an energy sensor, and an output signal generator. The sensors-drivers may be capacitors, inductors, or a sensor having a piezoelectric material. The sensor-drivers each have a component that vibrates along with the ring, and the sensor-drivers are arranged in cooperating sets, each cooperating set having two sensor-drivers positioned 180° apart. The circuitry can selectively engage some of the cooperating sets as sensors and others of the cooperating sets as drivers. Those sets used as sensors sense motion of the ring. Those sets used as drivers apply forces to the ring. Some of the drivers cause the ring to vibrate at its natural frequency, and some of the drivers seek to inhibit motion of the ring at particular locations. Locations at which drivers seek to inhibit motion are those locations that would be nodes in the absence of angular motion.

公开(公告)号：US09702697B2

公开(公告)日：2017-07-11

申请号：US14618726

申请日：2015-02-10

Applicant: Robert E. Stewart ,  David M. Rozelle ,  Charles A. Lee

Inventor： Robert E. Stewart ,  David M. Rozelle ,  Charles A. Lee

IPC: G01C19/56 ,  G01C19/5677 ,  G01C25/00 ,  G01C19/5684 ,  G01C19/5691 ,  G01C19/5776

CPC classification number: G01C19/5677 ,  G01C19/5684 ,  G01C19/5691 ,  G01C19/5776 ,  G01C25/00

Abstract: One embodiment of the invention includes a CVG system. A plurality of electrodes electrostatically force a resonator into a periodic motion based on a drive axis forcer signal applied to a first set of the plurality of electrodes and a sense axis force-rebalance signal applied to a second set of the plurality of electrodes, and provides a sense axis pickoff signal and a drive axis pickoff signal. A gyroscope controller generates the drive axis forcer signal based on the drive axis pickoff signal and calculates an angular rate of rotation about an input axis based on the sense axis force-rebalance signal. The gyroscope controller modulates a predetermined disturbance signal component onto the sense axis force-rebalance signal and to control a modulation phase of the sense axis force-rebalance signal based on detection of the predetermined disturbance signal component in the sense axis force-rebalance signal to substantially mitigate bias and scale-factor error.

公开(公告)号：US20130167639A1

公开(公告)日：2013-07-04

申请号：US13775856

申请日：2013-02-25

Applicant: Anolog Devices, Inc.

Inventor： Jinbo Kuang ,  William A. Clark ,  John A. Geen

IPC: G01C19/56

CPC classification number: G01C19/56 ,  G01C19/5677 ,  G01P15/09 ,  Y10T29/42

Abstract: An inertial sensor includes driving piezoelectric transducers for enabling an oscillation of a resonator, sensing piezoelectric transducers for enabling a detection of a movement of the inertial sensor, and piezoelectric compensating elements substantially equidistantly among the driving and the sensing piezoelectric transducers, wherein the compensating elements and the resonator form corresponding capacitors having capacitive gaps, and wherein, during the oscillation of the resonator, changes in electrostatic charges stored in the capacitors are measured with the compensating elements and are modified so as to modify the oscillation of the resonator.

Abstract translation: 惯性传感器包括驱动压电换能器，用于实现谐振器的振荡，感测压电换能器，以便能够检测惯性传感器的运动，以及压电补偿元件在驱动和感测压电换能器之间基本上等距离，其中补偿元件和 谐振器形成具有电容间隙的相应的电容器，并且其中，在谐振器的振荡期间，用补偿元件测量存储在电容器中的静电电荷的变化，并且被修改以便改变谐振器的振荡。

公开(公告)号：US08408060B2

公开(公告)日：2013-04-02

申请号：US13461961

申请日：2012-05-02

Applicant: Jinbo Kuang ,  William Albert Clark ,  John Albert Geen

Inventor： Jinbo Kuang ,  William Albert Clark ,  John Albert Geen

IPC: G01C19/56

CPC classification number: G01C19/56 ,  G01C19/5677 ,  G01P15/09 ,  Y10T29/42

Abstract: An inertial sensor includes driving piezoelectric transducers for enabling an oscillation of a resonator, sensing piezoelectric transducers for enabling a detection of a movement of the inertial sensor, and piezoelectric compensating elements substantially equidistantly among the driving and the sensing piezoelectric transducers, wherein the compensating elements and the resonator form corresponding capacitors having capacitive gaps, and wherein, during the oscillation of the resonator, changes in electrostatic charges stored in the capacitors are measured with the compensating elements and are modified so as to modify the oscillation of the resonator.

Abstract translation: 惯性传感器包括驱动压电换能器，用于实现谐振器的振荡，感测压电换能器，以便能够检测惯性传感器的运动，以及压电补偿元件在驱动和感测压电换能器之间基本上等距离，其中补偿元件和 谐振器形成具有电容间隙的相应的电容器，并且其中，在谐振器的振荡期间，用补偿元件测量存储在电容器中的静电电荷的变化，并且被修改以便改变谐振器的振荡。

公开(公告)号：US08056413B2

公开(公告)日：2011-11-15

申请号：US12208402

申请日：2008-09-11

Applicant: Navid Yazdi

Inventor： Navid Yazdi

IPC: G01P9/04

CPC classification number: G01C19/5677 ,  G01C19/5684

Abstract: A sensor and sensing method capable of full-differential symmetry to minimize bias drift and improve stability of the sensor output. The sensor includes a sensing element, sense electrodes capacitively coupled to the sensing element to generate capacitive outputs that vary in response to the motion of the sensing element, and a differential readout device. The sense electrodes are electrically separable into at least two pairs of differential sense electrodes. The readout device performs a sampling sequence of at least two sampling cycles during which the readout device samples the capacitive outputs of the sense electrodes and produces at least two differential outputs based on the difference between the capacitive outputs within each pair of differential sense electrodes. The readout device then calculates an average of the differential outputs of the sampling sequence to produce an output of the differential readout device, and thereafter repeats the sampling sequence and calculation.

Abstract translation: 一种传感器和感测方法，能够实现全差分对称，以最小化偏移漂移并提高传感器输出的稳定性。 传感器包括感测元件，感测电极电容耦合到感测元件以产生响应于感测元件的运动而变化的电容性输出以及差分读出装置。 感测电极可电分离成至少两对差动感测电极。 读出装置执行至少两个采样周期的采样序列，在此期间，读出装置对感测电极的电容输出进行采样，并且基于每对差分感测电极之间的电容输出之间的差产生至少两个差分输出。 读出装置然后计算采样序列的差分输出的平均值以产生差分读出装置的输出，然后重复采样序列和计算。

公开(公告)号：US20100212424A1

公开(公告)日：2010-08-26

申请号：US12678704

申请日：2008-09-08

Applicant: Alan Richard Malvern ,  Christopher Paul Fell ,  Andrew Kazer ,  Kevin Townsend

Inventor： Alan Richard Malvern ,  Christopher Paul Fell ,  Andrew Kazer ,  Kevin Townsend

IPC: G01C19/56

CPC classification number: G01C19/5677

Abstract: An angular velocity sensor or gyroscope has a ring and a primary drive transducer arranged to cause the ring to oscillate in a primary mode substantially at the resonant frequency of the primary mode of the ring. A primary control loop receives primary pick-off signals from the primary pick-off transducer and provides primary drive signals to the primary drive transducer so as to maintain resonant oscillation of the ring. The primary control loop includes a demodulator arranged to determine the amplitude of the fundamental frequency of the primary pick-off signals and a demodulator arranged to determine the amplitude of the second harmonic frequency of the primary pick-off signals and a drive signal generator arranged to produce the primary drive signals 116 with amplitude that is dependent on a ratio of the amplitude of the second harmonic frequency of the primary pick-off signal over the amplitude of the fundamental frequency of the primary pick-off signal as derived by a divider.

Abstract translation: 角速度传感器或陀螺仪具有环和主驱动换能器，其布置成使环以基本上处于环的主模式的共振频率的初级模式振荡。 主控制回路从初级传感器接收初级检测信号，并向主驱动传感器提供初级驱动信号，以保持环的谐振振荡。 主控制回路包括解调器，其被布置为确定主要拾取信号的基频的振幅;以及解调器，被布置成确定主要拾取信号的二次谐波频率的幅度;以及驱动信号发生器， 产生主驱动信号116，其幅度取决于初级拾取信号的二次谐波频率的幅度与由分频器导出的初级拾取信号的基频的振幅的比率。

公开(公告)号：US06978674B2

公开(公告)日：2005-12-27

申请号：US10475015

申请日：2002-09-06

Applicant: Christopher P Fell ,  Rebecka Eley ,  Colin H. J. Fox ,  Stewart McWilliam

Inventor： Christopher P Fell ,  Rebecka Eley ,  Colin H. J. Fox ,  Stewart McWilliam

IPC: G01C19/5677 ,  G01P9/04

CPC classification number: G01C19/5677

Abstract: A two axis gyroscope including a substantially planar vibratory resonator (5) having a substantially ring or hoop-like structure with inner and other peripheries extending around a common axis, carrier mode drive (22) for causing the resonator (5) to vibrate in a cosnθ vibration mode, carrier mode pick-off (23) for sensing movement of the resonator (5) in response to the carrier mode drive (22), X-axis response mode pick-off (25) for detecting movement of the resonator in response to rotation about the X-axis, X-axis response mode drive (24) for nulling said motion, y-axis response mode pick-off (27) for detecting movement of the resonator in response to rotation about the y-axis, y-axis response mode drive (26) for nulling said motion, and a support (9) for flexibly supporting the resonator (5) and for allowing the resonator to vibrate relative to the support (9) in response to the carrier mode drive (22) and to applied rotation, wherein the support (9) comprises only L legs, where, when L is even: L=2N/K, and where, when L is odd: L=N/K where K is an integer, L>2 and N is the carrier mode order.

Abstract translation: 一种双轴陀螺仪，包括具有基本上环形或环状结构的基本上平面的振动谐振器（5），其具有围绕公共轴线延伸的内部和其它周边;载体模式驱动器（22），用于使谐振器（5）振动 谐振器振动模式，用于响应于载波模式驱动（22）感测谐振器（5）的移动的载波模式拾取（23），用于检测谐振器的移动的X轴响应模式拾取（25） 响应围绕X轴旋转的X轴响应模式驱动（24），用于使所述运动置零，用于响应于围绕y轴的旋转检测谐振器的运动的y轴响应模式拾取（27） 用于使所述运动归零的y轴响应模式驱动器（26）和用于灵活地支撑谐振器（5）并且用于允许谐振器响应于载波模式驱动而相对于支撑件（9）振动的支撑件（9） 22）并施加旋转，其中支撑件（9） ）仅包括L个支路，其中当L为偶数时：<？in-line-formula description =“In-line Formulas”end =“lead”？> L = 2N / K和<？in-line-formula description =“直线公式”end =“tail”？>其中，当L为奇数时：<？in-line-formula description =“In-line Formulas”end =“lead”？> L = N / K < in-line-formula description =“In-line Formulas”end =“tail”？>其中K是整数，L> 2，N是载体模式顺序。

公开(公告)号：US20010042403A1

公开(公告)日：2001-11-22

申请号：US09880433

申请日：2001-06-13

Inventor： William S. Watson

IPC: G01P009/00 ,  G01C019/00

CPC classification number: G01C19/567 ,  G01C19/5642 ,  G01C19/5677

Abstract: A structure and arrangement for improving the accuracy and efficiency of an angular rate sensing gyroscope is herein disclosed. Voltage pick-off conductors are applied to an area of the surface of a resonating element of an angular rate sensing gyroscope that is subject to substantially zero stress when the gyroscope is rotationally stationary. Actuator conductors are similarly applied to a resonating element at a location bounded by areas of the resonating element subject to substantially uniform levels of stress when the gyroscope is rotationally stationary. A method for improving the voltage response of a piezoelectric resonating element is also disclosed.

公开(公告)号：US3924475A

公开(公告)日：1975-12-09

申请号：US40831473

申请日：1973-10-23

Applicant: SINGER CO

Inventor： STILES JOHN C

IPC: G01C19/5677 ,  G01C19/28

CPC classification number: G01C19/5677 ,  Y10T74/1264

Abstract: An extremely simple gyroscope for use in a strapdown system having a vibrating ring as the gyroscopic element. The ring is supported and vibrated by an electrostatic field, established by a voltage supplied to case-fixed electrodes. An additional pair of fixed electrodes senses the position of the nodes of vibration of the ring and an eddy current drive forces rotation of the ring to move the nodes back to a reference position. Optical sensing means provide the pick-off, sensing the direction and amount of rotation required to move the ring back to the nodal reference position.

公开(公告)号：US11656077B2

公开(公告)日：2023-05-23

申请号：US16716386

申请日：2019-12-16

Applicant: Analog Devices, Inc.

Inventor： Igor P. Prikhodko ,  Michael Judy

IPC: G01C19/24 ,  G01C19/5684 ,  B81B3/00 ,  G01C19/567 ,  G01C19/5677

CPC classification number: G01C19/24 ,  B81B3/0027 ,  G01C19/567 ,  G01C19/5677 ,  G01C19/5684 ,  B81B2201/0242

Abstract: An extensional mode electrostatic microelectromechanical systems (MEMS) gyroscope is described. The MEMS gyroscope operates in an extensional mode. The MEMS gyroscope comprises a vibrating ring structure that is electrostatically excited in the extensional mode.