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18 条记录 (耗时 0.027 秒)

    Split electrode to minimize charge transients, motor amplitude mismatch errors, and sensitivity to vertical translation in tuning fork gyros and other devices
    1.
    发明授权
    Split electrode to minimize charge transients, motor amplitude mismatch errors, and sensitivity to vertical translation in tuning fork gyros and other devices 失效
    拆分电极以最小化电荷瞬变，电机幅度失配误差，以及音叉陀螺仪和其他设备中垂直平移的灵敏度

    公开(公告)号：US5911156A

    公开(公告)日：1999-06-08

    申请号：US805013

    申请日：1997-02-24

    申请人： Paul A. Ward ,  Eric M. Hildebrant ,  Lance C. Niles ,  Marc S. Weinberg ,  Anthony S. Kourepenis

    发明人： Paul A. Ward ,  Eric M. Hildebrant ,  Lance C. Niles ,  Marc S. Weinberg ,  Anthony S. Kourepenis

    IPC分类号： G01C19/5719 ,  G01C19/00

    CPC分类号： G01C19/5719

    摘要： A micromechanical tuning fork gyroscope having two center electrodes is disclosed. The two center electrodes are excited with bias potentials of opposite polarity. The oppositely biased center electrodes provide electrical symmetry across the gyroscope and thereby reduce charge transients and sensitivity to vertical translation. Currents injected directly into the proof masses are equal and opposite and thus cancel. Motor lift forces acting on the proof masses and interleaved electrodes are equal, and hence the proof masses move in pure translation, thereby reducing in-phase bias. Further, any pure translation normal to the plane of the gyroscope does effect sense axis output signals.

    摘要翻译： 公开了一种具有两个中心电极的微机械音叉陀螺仪。 两个中心电极被相反极性的偏置电位激发。 相对偏置的中心电极在陀螺仪之间提供电对称性，从而减少电荷瞬变和对垂直平移的敏感性。 直接注入到质量块中的电流相等且相反，从而取消。 作用在证明质量块和交错电极上的电动机提升力相等，因此证明质量块以纯平移运动，从而减少同相偏差。 此外，垂直于陀螺仪平面的任何纯平移都会影响感测轴输出信号。

    Motor amplitude control circuit in conductor-on-insulator tuning fork gyroscope
    3.
    发明授权
    Motor amplitude control circuit in conductor-on-insulator tuning fork gyroscope 失效
    绝缘子导体陀螺仪陀螺仪中的电机幅度控制电路

    公开(公告)号：US06064169A

    公开(公告)日：2000-05-16

    申请号：US540809

    申请日：1995-10-11

    申请人： Paul A. Ward ,  Anthony S. Kourepenis ,  Marc S. Weinberg

    发明人： Paul A. Ward ,  Anthony S. Kourepenis ,  Marc S. Weinberg

    IPC分类号： G01C19/5719 ,  H03B5/30 ,  G05D15/00

    CPC分类号： G01C19/5719

    摘要： A control system for a tuning fork gyroscope uses motor frequency to control motor amplitude. The tuning fork gyroscope has a drive signal input and an output signal from which motor frequency is determined. A phase/frequency detector generates an error signal by comparing the actual oscillation phase of the output signal with the phase of a reference signal from a crystal controlled frequency synthesizer. The error signal is filtered in a feedback loop control to reduce phase detector ripple. The output of the loop controller is then used to determine the appropriate drive signal to drive the error signal to a constant and maintain a predetermined oscillation frequency.

    摘要翻译： 音叉陀螺仪的控制系统使用电机频率来控制电机振幅。 音叉陀螺仪具有驱动信号输入和确定电机频率的输出信号。 相位/频率检测器通过将输出信号的实际振荡相位与来自晶体控制频率合成器的参考信号的相位进行比较来产生误差信号。 误差信号在反馈回路控制中进行滤波，以减少相位检测器的纹波。 然后使用环路控制器的输出来确定适当的驱动信号以将误差信号驱动到恒定并保持预定的振荡频率。

    Temperature insensitive silicon oscillator and precision voltage reference formed therefrom
    4.
    发明授权
    Temperature insensitive silicon oscillator and precision voltage reference formed therefrom 失效
    温度不敏感的硅振荡器和由此形成的精密电压基准

    公开(公告)号：US5783973A

    公开(公告)日：1998-07-21

    申请号：US804796

    申请日：1997-02-24

    申请人： Marc S. Weinberg ,  Paul A. Ward ,  Anthony S. Kourepenis

    发明人： Marc S. Weinberg ,  Paul A. Ward ,  Anthony S. Kourepenis

    IPC分类号： G01C19/574 ,  H03B5/30 ,  H03H9/02 ,  H03H9/24 ,  H03L1/02 ,  H03L7/099 ,  H03L7/00

    CPC分类号： G01C19/574 ,  H03H9/02448 ,  H03H9/2405 ,  H03H9/2426 ,  H03L1/02 ,  H03L7/099 ,  H03H2009/02496 ,  H03H2009/02511

    摘要： Micromachined, thermally insensitive silicon resonators are provided having accuracy equivalent or superior to that of quartz resonators, and are fabricated from a micromechanical, silicon-on-glass process. In one embodiment, such a resonator is realized using a tuning fork gyroscope. Radiation-hard precision voltage references (PVRs) are enabled using the silicon resonators. Thermal sensitivity is reduced relative to that of a silicon-on-silicon process oscillator, providing a thermal sensitivity comparable to that of a quartz oscillator. By employing a micromechanical device based upon a tuning fork gyroscope, resonators are made from either or both of the gyro drive and sense axes. A resonator constructed as an oscillator loop whose resonant frequency is compared to a frequency standard provides a bias voltage as a reference voltage.

    摘要翻译： 提供微机械加热的不敏感的硅谐振器，其具有与石英谐振器相当或优于石英谐振器的精度，并且由微机械的硅 - 玻璃工艺制造。 在一个实施例中，使用音叉陀螺仪实现这种谐振器。 使用硅谐振器启用辐射硬精密电压基准（PVR）。 相对于硅硅工艺振荡器的热敏感性降低，提供与石英振荡器相当的热敏感性。 通过采用基于音叉陀螺仪的微机械装置，谐振器由陀螺仪驱动和感测轴中的一个或两者制成。 构成谐振频率与频率标准相比较的振荡器环路的谐振器提供偏置电压作为参考电压。

    Beat frequency motor position detection scheme for tuning fork gyroscope and other sensors
    5.
    发明授权
    Beat frequency motor position detection scheme for tuning fork gyroscope and other sensors 失效
    音叉电机位置检测方案用于音叉陀螺仪等传感器

    公开(公告)号：US5747961A

    公开(公告)日：1998-05-05

    申请号：US541079

    申请日：1995-10-11

    申请人： Paul A. Ward ,  Anthony S. Kourepenis

    发明人： Paul A. Ward ,  Anthony S. Kourepenis

    IPC分类号： G01C19/5719 ,  G01P15/14

    CPC分类号： G01C19/5719 ,  G01P15/14

    摘要： A tuning fork gyroscope has an in-plane position sensitive pick-off to which an AC or AC+DC bias is applied. Intermodulation is exploited to produce beat-notes between the applied frequency and the motor frequency at amplitudes proportional to motor amplitude, but unaffected by error sources such as spurious substrate charge accumulation. The beat-notes are used to control motor amplitude without the effects of charge accumulation.

    摘要翻译： 音叉陀螺仪具有应用AC或AC + DC偏置的平面内位置敏感拾取器。 互调被用来在施加的频率和电动机频率之间产生与电机幅度成比例的幅度上的节拍，但不受诸如伪衬底电荷积累的误差源的影响。 节拍是用来控制电机振幅而不会产生电荷积累的影响。

    Automatic gain calibration system for a phase modulator in a fiber optic gyro
    9.
    发明授权
    Automatic gain calibration system for a phase modulator in a fiber optic gyro 失效
    光纤陀螺相位调制器的自动增益校准系统

    公开(公告)号：US5363195A

    公开(公告)日：1994-11-08

    申请号：US996724

    申请日：1992-12-24

    申请人： Paul A. Ward ,  Joseph G. Walsh

    发明人： Paul A. Ward ,  Joseph G. Walsh

    IPC分类号： G01C19/72

    CPC分类号： G01C19/726

    摘要： An automatic gain calibration system for a phase modulator for forcing a predetermined phase shift amplitude includes a phase modulator responsive to an applied voltage for modulating the phase of a radiation beam. The frequency spectrum of the modulated radiation beam is converted to the electrical domain where a selected even harmonic of the spectrum is nulled. The scaling circuit then responds to the amplitude of voltage applied to the phase modulator that obtains the phase shift which produced the nulling of the selected even harmonic and scales that voltage to generate the predetermined phase shift amplitude which is desired.

    摘要翻译： 用于强制预定相移振幅的相位调制器的自动增益校准系统包括响应于施加的电压以调制辐射束的相位的相位调制器。 调制的辐射束的频谱被转换成其中所选频谱的均匀谐波为零的电域。 缩放电路然后响应于施加到相位调制器的电压的幅度，该相位调制器获得产生所选择的偶次谐波零点的相移，并且对该电压进行比例以产生期望的预定相移幅度。

    Interferometric fiber optic gyroscope with off-frequency modulation signals
    10.
    发明授权
    Interferometric fiber optic gyroscope with off-frequency modulation signals 有权
    具有离频调制信号的干涉光纤陀螺仪

    公开(公告)号：US07817284B2

    公开(公告)日：2010-10-19

    申请号：US12163621

    申请日：2008-06-27

    申请人： Paul A. Ward

    发明人： Paul A. Ward

    IPC分类号： G01C19/72

    CPC分类号： G01C19/721

    摘要： Interference in a rotation rate detector signal of an interferometric fiber-optic gyroscope from a bias phase modulator signal may be reduced or substantially avoided by transmitting one or more off-frequency signals having a frequency other than the eigenfrequency of the gyroscope towards a bias phase modulator, generating the bias phase modulator signal having a frequency substantially equal to the eigenfrequency of the gyroscope, and driving the bias phase modulator with the bias phase modulator signal.

    摘要翻译： 可以通过将具有不同于陀螺仪的本征频率的频率的一个或多个截止频率信号发送到偏置相位调制器来减少或基本上避免来自偏置相位调制器信号的干涉光纤陀螺仪的旋转速率检测器信号的干扰 产生具有基本上等于陀螺仪的本征频率的频率的偏置相位调制器信号，以及利用偏置相位调制器信号来驱动偏置相位调制器。