公开(公告)号：US5698784A

公开(公告)日：1997-12-16

申请号：US593534

申请日：1996-01-24

申请人： Steven P. Hotelling ,  Brian R. Land

发明人： Steven P. Hotelling ,  Brian R. Land

IPC分类号： G01C19/5607 ,  G01C19/00 ,  G01P9/00

CPC分类号： G01C19/5607

摘要： A vibrating gyroscope employs an electromagnetic transducer assembly which excites the vibration of the inertial element and senses its trajectory to provide an indication of movement relative to the plane of vibration of the inertial element. The transducer assembly allows for calibration of the gyroscope by positioning the transducer relative to the inertial element, thereby eliminating conventional requirements for selectively removing material from the inertial element during final calibration. Elastic members of the inertial element are manufactured in a monolithic structure to enhance the vibratory symmetry of the inertial element and the consistency and repeatability of its resonant properties. A phase-shifting circuit allows accurate extraction of rate information from the transducer while rejecting error signals. A mounting system facilitates mounting inertial elements to provide a simple implementations of multi-axis vibrating gyroscopes.

摘要翻译： 振动陀螺仪采用电磁换能器组件，其激发惯性元件的振动并感测其轨迹，以提供相对于惯性元件的振动平面的运动的指示。 传感器组件允许通过相对于惯性元件定位换能器来校准陀螺仪，从而消除了在最终校准期间选择性地从惯性元件去除材料的常规要求。 惯性元件的弹性构件以单片结构制造，以增强惯性元件的振动对称性及其谐振特性的一致性和重复性。 移相电路允许在拒绝误差信号的同时准确地提取来自换能器的速率信息。 安装系统有助于安装惯性元件以提供多轴振动陀螺仪的简单实现。

公开(公告)号：US5656226A

公开(公告)日：1997-08-12

申请号：US695742

申请日：1996-08-12

申请人： Henry J. McVicker

发明人： Henry J. McVicker

IPC分类号： A44B18/00 ,  B29C45/26 ,  B29C45/44 ,  G01C19/5607 ,  A61F5/00

CPC分类号： G01C19/5607 ,  A44B18/0049 ,  B29C45/4407 ,  G01C19/38 ,  B29C45/2602 ,  B29L2031/729 ,  Y10S425/058 ,  Y10T24/2792 ,  Y10T428/24017

摘要： A method and apparatus are provided for injection-molding a unitary, relatively rigid thermoplastic device having a field of injection-molded hooks integrally formed in predetermined areas on the device during the injection-molding of the device for releasable attachment to an associated co-operative loop bearing member.

摘要翻译： 提供了一种方法和装置，用于注射成型一体的相对刚性的热塑性装置，其具有注射模制成型中的预定区域中的注塑成型钩的领域，所述注射成型的钩在注射成型装置期间可释放地附接到相关联的合作 环轴承构件。

公开(公告)号：US5585562A

公开(公告)日：1996-12-17

申请号：US640399

申请日：1996-04-30

申请人： Nobuo Kurata ,  Nobuyoshi Sugitani ,  Takashi Ozaki ,  Kenji Harada ,  Kimitoshi Tsuji ,  Yutaka Nonomura ,  Takeshi Morikawa ,  Masayuki Okuwa ,  Kouji Tsukada

发明人： Nobuo Kurata ,  Nobuyoshi Sugitani ,  Takashi Ozaki ,  Kenji Harada ,  Kimitoshi Tsuji ,  Yutaka Nonomura ,  Takeshi Morikawa ,  Masayuki Okuwa ,  Kouji Tsukada

IPC分类号： G01C19/5607 ,  G01P9/04

CPC分类号： G01C19/5607

摘要： A vibration-sensing gyro composed of a light alloy such as duralumin includes a base and a first pair of tines projecting parallel to each other from the base. Piezoelectric elements are mounted on the root of the side faces of the first pair of tines to excite the first pair of tines along an X axis. The vibrations of the first pair of tines along the X axis are then propagated to a second pair of tines to vibrate the second pair of tines along the X axis. Piezoelectric elements are mounted on the root of the upper and the lower faces of the second pair of tines to detect vibrations of the second pair of tines along an Y axis. When the second pair of tines receives the Coriolis force based on an angular velocity .omega. around a Z axis and vibrates along the Y axis, the vibrations along the Y axis are detected as electric signals (alternating current voltages) by piezoelectric effects of the piezoelectric elements.

摘要翻译： 由诸如硬铝的轻合金构成的振动感测陀螺包括基部和从底部彼此平行地突出的第一对尖齿。 压电元件安装在第一对尖齿的侧面的根部上，以沿X轴激发第一对尖齿。 沿着X轴的第一对尖齿的振动然后传播到第二对尖齿，以使第二对尖齿沿X轴振动。 压电元件安装在第二对尖齿的上表面和下表面的根部上，以检测第二对尖齿沿着Y轴的振动。 当第二对尖齿接收基于围绕Z轴的角速度ω的科里奥利力并且沿着Y轴振动时，通过压电元件的压电效应将沿着Y轴的振动检测为电信号（交流电压） 。

公开(公告)号：US5533397A

公开(公告)日：1996-07-09

申请号：US329385

申请日：1994-10-26

申请人： Nobuyoshi Sugitani ,  Masayuki Okuwa ,  Takeshi Morikawa ,  Yutaka Nonomura

发明人： Nobuyoshi Sugitani ,  Masayuki Okuwa ,  Takeshi Morikawa ,  Yutaka Nonomura

IPC分类号： G01C19/56 ,  G01C19/5607 ,  H03H9/02 ,  H03H9/24 ,  G01P9/04

CPC分类号： G01C19/5607

摘要： The invention provides a vibration-sensing gyro, where resonance frequencies of tines are adjusted adequately in a simple manner. A vibration-sensing gyro (10) of the invention is made of a light alloy plate like duralumin and includes a first tine (14) and a second tine (16) disposed parallel to each other and projecting from a base (12). When the first tine (14) has a length l1, a width w1 along the X axis, and a thickness t1 and the second tine (16) has a length l2, a width w2 along the X axis, and a thickness t2 (=t1), the first tine (14) and the second tine (16) hold the relationship of l2/.sqroot.t2=l1/.sqroot.w1. In other words, the tines (14,16) and the base (12) are manufactured to satisfy this relationship. Such definition of the dimensions makes a resonance frequency fx1 of the first tine along the X axis coincide with a resonance frequency fy 2 of the second tine 16 along the Y axis.

摘要翻译： 本发明提供了一种振动感测陀螺仪，其中以简单的方式适当地调节尖齿的共振频率。 本发明的振动感应陀螺仪（10）由轻质合金板如硬铝制成，并包括彼此平行并从底座（12）伸出的第一齿（14）和第二齿（16）。 当第一齿（14）具有长度l1时，沿X轴的宽度w1和厚度t1和第二齿16具有长度l2，沿X轴的宽度w2和厚度t2（= t1），第一齿（14）和第二齿（16）保持l2 / 2ROOT t2 = l1 / 2ROOT w1的关系。 换句话说，制造齿（14,16）和基座（12）以满足这种关系。 尺寸的这种定义使得沿着X轴的第一齿的共振频率fx1与第二齿16沿Y轴的共振频率fy 2一致。

公开(公告)号：US5491725A

公开(公告)日：1996-02-13

申请号：US116859

申请日：1993-09-07

申请人： Stanley A. White

发明人： Stanley A. White

IPC分类号： G01C19/5607 ,  H03D3/00 ,  H03H17/02 ,  H04L27/14

CPC分类号： G01C19/5607 ,  H03D3/005

摘要： A tracking filter has a tunable filter responsive to an input signal for producing a filtered output signal, a Hilbert transformer for producing an in-phase reference signal and a quadrature-phase reference signal from the filtered output signal, and a discriminator responsive to the input signal and the in-phase and quadrature-phase reference signals for producing a passband center frequency control signal and a passband width control signal for controlling the passband center frequency and the passband width of the tunable filter. The frequency discriminator performs complex demodulation of the input signal with the in-phase reference signals to produce respective in-phase and quadrature-phase baseband signals which are low-pass filtered. The quadrature-phase baseband signal is divided by the in-phase baseband signal. The quotient is integrated to produce the passband center frequency control signal. Preferably the baseband signals are also filtered by adjustable filters having passband center frequencies and passband widths controlled in response to the passband center frequency control signal and the passband width control signal, respectively. Preferably the tracking filter is a digital filter.

摘要翻译： 跟踪滤波器具有响应于用于产生滤波输出信号的输入信号的可调谐滤波器，用于产生同步参考信号的希尔伯特变换器和来自经滤波的输出信号的正交参考信号，以及响应于输入的鉴频器 信号和同相和正交相位参考信号，用于产生通带中心频率控制信号和通带宽度控制信号，用于控制可调谐滤波器的通带中心频率和通带宽度。 频率鉴别器利用同相参考信号对输入信号进行复杂解调，以产生低通滤波的相位同相和正交相位基带信号。 正交基带信号被同相基带信号除。 集成商，产生通带中心频率控制信号。 优选地，基带信号也被可调滤波器滤波，该滤波器具有响应于通带中心频率控制信号和通带宽度控制信号而受控的通带中心频率和通带宽度。 优选地，跟踪滤波器是数字滤波器。

公开(公告)号：US5476008A

公开(公告)日：1995-12-19

申请号：US279722

申请日：1994-07-25

申请人： John C. Pinson

发明人： John C. Pinson

IPC分类号： G01C19/5607 ,  G01P9/04

CPC分类号： G01C19/5607

摘要： An improvement in rate-sensing tuning fork design includes a generally planar and H-shaped sensor frame of piezoelectric material. The frame includes a first pair of tines and a second pair of tines joined to an intermediate cross-piece. Connecting means is provided for connecting each of the second pair of tines to the other of said second pair at a location spaced from said intermediate cross-piece. The connecting means is preferably a connecting member formed of piezoelectric material, with the member being generally parallel to the intermediate cross-piece of the H-shaped frame and disposed between the second pair of tines. The connecting means prevents each of the tines of the second pair from vibrating directly toward or away from each other. A preferred method of use of the device is described.

摘要翻译： 速率感应音叉设计的改进包括压电材料的大体平面和H形传感器框架。 框架包括第一对尖齿和连接到中间横梁的第二对尖齿。 提供连接装置，用于将第二对尖齿中的每一个连接到与所述中间横梁隔开的位置处的所述第二对中的另一个。 连接装置优选为由压电材料形成的连接构件，该构件大致平行于H形框架的中间横截面并且设置在第二对尖齿之间。 连接装置防止第二对的每个尖齿彼此直接或相离地振动。 描述了该设备的优选使用方法。

公开(公告)号：US5459432A

公开(公告)日：1995-10-17

申请号：US376467

申请日：1995-01-20

申请人： Stanley A. White ,  John C. Pinson

发明人： Stanley A. White ,  John C. Pinson

IPC分类号： G01C19/5607 ,  G01C21/16 ,  H03D1/00 ,  H03D1/24 ,  H04L27/22

CPC分类号： G01C19/5607 ,  G01C21/16 ,  H03D1/00

摘要： To demodulate an analog signal having information modulated by a carrier, the analog signal is chopped by a chopper, the chopped signal is digitized by a sigma-delta analog-to-digital converter to produce a series of digital samples at a sampling frequency, the digital samples are filtered in a digital decimating filter to produce data words, and the data words are modulated by an intermediate frequency signal to produce a detected information signal. The various frequency signals are generated by a phase-lock loop so that the intermediate frequency is the difference between the carrier frequency and the chopping frequency, and both the chopping frequency and the intermediate frequency are sub-multiples of the sampling frequency. Therefore aliases and artifacts caused by the chopper are either cancelled or fall on multiples of the output sampling frequency, and the intermediate frequency signal can be a square wave without generating artifacts that need be removed by filtering of the detected information signal. Preferably the chopper is placed in an analog portion of a feedback loop of the sigma-delta modulator, and an exclusive-OR gate is placed in the digital portion of the feedback loop, so that the gain of the demodulation process becomes independent of the gain of the chopper. The detection process is especially suited for detecting an angular-rate signal from a vibrating quartz angular rate sensor, because the detection process has very high accuracy, resolution, and linearity.

摘要翻译： 为了解调具有由载波调制的信息的模拟信号，模拟信号被斩波器斩波，斩波信号被Σ-Δ模数转换器数字化，以采样频率产生一系列数字样本， 数字样本在数字抽取滤波器中被滤波以产生数据字，并且数据字由中频信号调制以产生检测到的信息信号。 各种频率信号由相位锁定环路产生，使得中频是载波频率与斩波频率之差，斩波频率和中频均为采样频率的次倍数。 因此，由斩波器引起的别名和伪像被取消或落在输出采样频率的倍数上，并且中频信号可以是方波，而不产生需要通过滤波检测到的信息信号去除的伪像。 优选地，斩波器被放置在Σ-Δ调制器的反馈回路的模拟部分中，并且异或门被放置在反馈回路的数字部分中，使得解调过程的增益变得与增益无关 的砍刀。 检测过程特别适用于检测来自振动石英角速度传感器的角速率信号，因为检测过程具有非常高的精度，分辨率和线性度。

公开(公告)号：US5447066A

公开(公告)日：1995-09-05

申请号：US114145

申请日：1993-09-01

申请人： Jiro Terada ,  Hiroshi Takenaka ,  Masaharu Ushihara ,  Toshihiko Ichinose ,  Sumitake Yoshida ,  Masami Tamura

发明人： Jiro Terada ,  Hiroshi Takenaka ,  Masaharu Ushihara ,  Toshihiko Ichinose ,  Sumitake Yoshida ,  Masami Tamura

IPC分类号： G01C19/5607 ,  G01P9/04

CPC分类号： G01C19/5607

摘要： The present invention relates to an angular velocity sensor utilized as a gyroscope and particularly, to a high-performance angular velocity sensor having a tuning-fork construction. The vibrator is formed of a metal base plate which is bent about 90 degrees along a center line defined by two opposite slits extending from their respective side edges to a central region of the metal base plate so that its two bent parts are orthogonal to each other. Two piezoelectric elements are bonded to the corresponding surfaces of the two parts of each vibrator which in turn serve as an actuator and a detector.

摘要翻译： 本发明涉及用作陀螺仪的角速度传感器，特别涉及具有音叉结构的高性能角速度传感器。 振动器由金属底板形成，该金属基板沿着由从其各自的侧边缘延伸到金属基板的中心区域的两个相对的狭缝限定的中心线弯曲约90度，使得其两个弯曲部分彼此正交 。 两个压电元件结合到每个振动器的两个部分的相应表面上，其又用作致动器和检测器。

公开(公告)号：US5239868A

公开(公告)日：1993-08-31

申请号：US933586

申请日：1992-08-24

申请人： Hiroshi Takenaka ,  Mikio Nozu ,  Hiroshi Senda ,  Toshihiko Ichinose ,  Jiro Terada ,  Kazumitsu Ueda ,  Yasuhito Osada ,  Takahiro Manabe

发明人： Hiroshi Takenaka ,  Mikio Nozu ,  Hiroshi Senda ,  Toshihiko Ichinose ,  Jiro Terada ,  Kazumitsu Ueda ,  Yasuhito Osada ,  Takahiro Manabe

IPC分类号： G01C19/5607

CPC分类号： G01C19/5607

摘要： An angular rate sensor detects an angular rate which is produced when a mobile body such as a motor vehicle moves. The angular rate detecting device comprises at least two angular rate sensors housed in a case perpendicularly to each other. The angular rate sensor comprising a pair of vibratory units which are interconnected by a connector in a tuning-fork configuration. The vibratory units of the angular rate sensors are vibrated at different frequencies. The angular rate sensors may be accommodated in a damper block, which may be housed in the case. Since the angular rate sensors are housed in the single case, the angular rate detecting device is compact in structure and small in size. With the angular rate sensors accommodated in the damper block, they are protected from resonance, crosstalk interferences, and noise, and hence can produce reliable detected output signals.

摘要翻译： 角速率传感器检测当诸如机动车辆的移动体移动时产生的角速度。 角速率检测装置包括容纳在垂直于彼此的壳体中的至少两个角速度传感器。 角速率传感器包括一对振动单元，其通过音叉配置中的连接器互连。 角速度传感器的振动单元以不同的频率振动。 角速度传感器可以容纳在可以容纳在壳体中的阻尼器块中。 由于角速度传感器容纳在单个壳体中，角速度检测装置结构紧凑，尺寸小。 通过容纳在阻尼器块中的角速度传感器，可以防止它们的共振，串扰干扰和噪声，从而可以产生可靠的检测输出信号。

公开(公告)号：US4930351A

公开(公告)日：1990-06-05

申请号：US172380

申请日：1988-03-24

申请人： David F. Macy ,  Evert C. Alsenz

发明人： David F. Macy ,  Evert C. Alsenz

IPC分类号： G01C19/5607

CPC分类号： G01C19/5607

摘要： An inertial sensing system includes a geometric structure having several independent mechanically resonant modes of vibration such that when the structure is subjected to outside inertial motions that are to be sensed, a driven mode of vibration will couple energy in a specific manner into a pickup mode. The driven mode serves as a reference motion. The system measures angular rotation rate by sensing the vibrations in the pickup mode caused by the action of the Coriolis effect on the balanced driven mode which couples energy into the pickup mode. The system includes a portion of the geometric structure that is subject to strain caused by linear acceleration in one direction. The strain introduces an imbalance in the driven mode which causes energy to be coupled to the pickup mode of vibration in a nominally linear manner. A sensing circuit is provided to sense the amount of energy coupled into the pickup system as a measure of applied angular rotation and applied acceleration. The coupling of energy into the pickup caused by linear acceleration is orthogonal to the coupling of energy caused by angular rotation rate, and the effects of the two sources of coupled energy can be separated by the system circuitry such that independent determination of the two types of input motion is realized. The sensing system is preferably made of a material such as crystalline quartz that is mechanically stable and is also piezoelectric so that the driving and sensing can be accomplished by piezoelectric techniques.

摘要翻译： 惯性感测系统包括具有几个独立的机械共振振动模式的几何结构，使得当该结构受到要被感测的外部惯性运动时，驱动的振动模式将以特定方式将能量耦合到拾取模式中。 驱动模式用作参考运动。 该系统通过感测科里奥利效应对将能量耦合到拾取模式的平衡驱动模式引起的拾取模式中的振动来测量角度旋转速率。 该系统包括由一个方向上的线性加速引起的应力的几何结构的一部分。 该应变引入了驱动模式中的不平衡，其使能量以标称线性的方式耦合到振动的拾取模式。 提供感测电路以感测耦合到拾取系统中的能量的量作为所施加的角旋转和施加的加速度的量度。 由线性加速度引起的能量到拾取器中的耦合与由角度旋转速率引起的能量的耦合正交，并且耦合能量的两个源的影响可以由系统电路分离，使得两种类型的 实现输入运动。 感测系统优选地由诸如结晶石英的材料制成，其是机械稳定的并且也是压电的，使得可以通过压电技术来实现驱动和感测。