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18 条记录 (耗时 0.038 秒)

    Split electrode to minimize charge transients, motor amplitude mismatch errors, and sensitivity to vertical translation in tuning fork gyros and other devices
    3.
    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。

    Automatic gain calibration system for a phase modulator in a fiber optic gyro
    6.
    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
    7.
    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。

    Sensor having an off-frequency drive scheme and a sense bias generator utilizing tuned circuits
    8.
    发明授权
    Sensor having an off-frequency drive scheme and a sense bias generator utilizing tuned circuits 失效
    具有偏置驱动方案的传感器和利用调谐电路的感测偏压发生器

    公开(公告)号：US5703292A

    公开(公告)日：1997-12-30

    申请号：US425960

    申请日：1995-04-19

    申请人： Paul A. Ward

    发明人： Paul A. Ward

    IPC分类号： G01C19/56 ,  G01P9/04 ,  H03F1/08

    CPC分类号： H03F1/083 ,  G01C19/5719

    摘要： Electronics for use in Coriolis and other sensors for reducing errors in the sensor output signal. The electronics includes an off-frequency drive scheme for reducing in-band drive signal coupling to the output signal and techniques for reducing errors in the sensor output signal due to quadrature and phase shift. The off-frequency drive scheme includes a frequency translation circuit in the excitation feedback loop of a sensor system to suppress components of the sensor drive signal at a predetermined frequency so that coupling of the drive signal to the sensor output signal can be readily removed by conventional filtering techniques. The sensor system includes a nonlinear input transducer for converting the drive signal to a force signal such that the force signal has a component at the predetermined frequency while the drive signal does not. A tuned circuit amplifies and filters the frequency shifted output signal of the translation circuit to provide the drive signal. Also provided is a sense bias generator including a tuned circuit for amplifying the available bias supply voltage to enhance sensitivity.

    摘要翻译： 用于科里奥利和其他传感器的电子装置，用于减少传感器输出信号的误差。 电子装置包括用于减少与输出信号耦合的带内驱动信号的非频率驱动方案和用于减少由于正交和相移导致的传感器输出信号中的误差的技术。 偏频驱动方案包括传感器系统的激励反馈回路中的频率转换电路，以预定频率抑制传感器驱动信号的分量，从而可以通过常规的方式将驱动信号与传感器输出信号的耦合容易地去除 过滤技术。 传感器系统包括非线性输入传感器，用于将驱动信号转换成力信号，使得力信号在驱动信号不具有预定频率的分量时。 调谐电路对转换电路的频移输出信号进行放大和滤波以提供驱动信号。 还提供了一种感测偏置发生器，其包括用于放大可用偏置电源电压以提高灵敏度的调谐电路。