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    Enchancing path length resets in a ring laser gyro
    11.
    发明授权
    Enchancing path length resets in a ring laser gyro 失效
    在环形激光陀螺仪中增强路径长度复位

    公开(公告)号：US6067160A

    公开(公告)日：2000-05-23

    申请号：US803493

    申请日：1997-02-20

    Applicant: Andrew J. Karpinski, Jr. ,  Steven C. Albers ,  Timothy J. Callaghan

    Inventor： Andrew J. Karpinski, Jr. ,  Steven C. Albers ,  Timothy J. Callaghan

    IPC: H01S3/083 ,  G01C19/66

    CPC classification number: G01C19/665

    Abstract: In an ring laser gyro, a path length modulation signal is applied to an amplifier with two gain levels and the amplifier's output is added to a path length transducer drive signal that changes the gyro's path length. When a path length reset signal is produced, the higher gain signal is selected and maintained for a short interval after the reset signal.

    Abstract translation: 在环形激光陀螺仪中，路径长度调制信号被施加到具有两个增益级的放大器，并且放大器的输出被添加到改变陀螺仪路径长度的路径长度传感器驱动信号。 当产生路径长度复位信号时，在复位信号之后的较短间隔内选择并保持较高的增益信号。

    Systems and methods for thermal gradient compensation for ring laser gyroscopes
    13.
    发明授权
    Systems and methods for thermal gradient compensation for ring laser gyroscopes 有权
    环形激光陀螺仪的热梯度补偿系统和方法

    公开(公告)号：US08781778B2

    公开(公告)日：2014-07-15

    申请号：US13250267

    申请日：2011-09-30

    Applicant: Alan Bruce Touchberry ,  Timothy J. Callaghan ,  Bruce A. Seiber

    Inventor： Alan Bruce Touchberry ,  Timothy J. Callaghan ,  Bruce A. Seiber

    IPC: G01C17/38 ,  G01C19/66

    CPC classification number: G01C19/662

    Abstract: Systems and methods for thermal gradient compensation for ring laser gyroscopes are provided. In one embodiment, a method for producing bias compensated angular rate measurements from a ring laser gyroscope comprises: sampling an angle measurement output from a laser block sensor to obtain an angular rate measurement; obtaining an laser block temperature measurement (Tblock) for the laser block sensor; obtaining a temperature gradient measurement (Tdiff) for at least one gradient line across a portion of the laser block sensor; calculating a rate bias error by applying parameters produced from the temperature measurement (Tblock) and the temperature gradient measurement (Tdiff) to a thermal gradient compensation model, wherein the thermal gradient compensation model includes at least one coefficient corresponding to the temperature gradient measurement (Tdiff); and calculating a difference between the angle rate measurement and the rate bias error to produce a bias compensated angular rate measurement.

    Abstract translation: 提供了用于环形激光陀螺仪的热梯度补偿的系统和方法。 在一个实施例中，一种用于从环形激光陀螺仪产生偏置补偿角速率测量的方法包括：对来自激光块传感器的角度测量输出进行采样以获得角速率测量; 获得激光块传感器的激光块温度测量（Tblock）; 对于穿过激光块传感器的一部分的至少一个梯度线获得温度梯度测量（Tdiff）; 通过将从温度测量（Tblock）和温度梯度测量（Tdiff）产生的参数应用到热梯度补偿模型来计算速率偏差误差，其中热梯度补偿模型包括对应于温度梯度测量的至少一个系数（Tdiff ）; 并且计算角速率测量和速率偏差误差之间的差以产生偏置补偿角速率测量。

    GYROSCOPE MODE SHIFT DETECTION AND SCALE FACTOR COMPENSATION
    14.
    发明申请
    GYROSCOPE MODE SHIFT DETECTION AND SCALE FACTOR COMPENSATION 有权
    GYROSCOPE模式移位检测和规模因子补偿

    公开(公告)号：US20100014092A1

    公开(公告)日：2010-01-21

    申请号：US11750773

    申请日：2007-05-18

    Applicant: David O. Fellows ,  Ying Tan ,  Timothy J. Callaghan ,  Christina M. Schober

    Inventor： David O. Fellows ,  Ying Tan ,  Timothy J. Callaghan ,  Christina M. Schober

    IPC: G01C19/68

    CPC classification number: G01C19/68 ,  G01C19/665 ,  H01S3/0835 ,  H01S3/2222

    Abstract: A method for maintaining measurement accuracy of a ring laser gyroscope is disclosed. The method involves periodically measuring a path length control voltage in the ring laser gyroscope over a prescribed temperature range. When a first path length controlled by the path length control voltage deviates at least one wavelength from a nominal path length, the method detects the change in the path length as a mode shift. For each mode shift, the method applies a path length correction to maintain the first path length at a target path length over the prescribed temperature range. The method can apply a correction to a measurement signal output of the ring laser gyroscope by adjusting a calibrated scale factor depending on an actual integer number of wavelengths achieved during a mode shift.

    Abstract translation: 公开了一种用于维持环形激光陀螺仪的测量精度的方法。 该方法包括在规定的温度范围内周期性地测量环形激光陀螺仪中的路径长度控制电压。 当由路径长度控制电压控制的第一路径长度从标称路径长度偏离至少一个波长时，该方法将路径长度的变化检测为模式偏移。 对于每个模式移位，该方法应用路径长度校正以将第一路径长度保持在超过规定温度范围的目标路径长度。 该方法可以通过根据在模式移位期间实现的实际波长的实数整数来调整校准的比例因子来对环形激光陀螺仪的测量信号输出进行校正。

    Current control biasing to protect electrode seals
    15.
    发明授权
    Current control biasing to protect electrode seals 有权
    电流控制偏压保护电极密封

    公开(公告)号：US06714580B2

    公开(公告)日：2004-03-30

    申请号：US10005285

    申请日：2001-12-05

    Applicant: Steven P. Ecklund ,  Timothy J. Callaghan

    Inventor： Steven P. Ecklund ,  Timothy J. Callaghan

    IPC: H01S3083

    CPC classification number: G01C19/661 ,  H01S3/034 ,  H01S3/0346 ,  H01S3/038 ,  H01S3/0388 ,  H01S3/083 ,  H01S3/0835

    Abstract: Current control biasing of a ring laser gyroscope is employed to protect electrode seals. A frame of a ring laser gyroscope has more than one electrode attached to it. An electric field is created between the electrodes during the operation of the gyroscope, which causes ions in the frame to migrate towards a lowest electrical potential. Electrode seals are located between the electrodes and the frame. By providing a positive power supply voltage and connecting the current control to the non-ground side of the power supply, the mounting structure may be at the lowest electrical potential. The ions will then migrate towards the mounting structure, which significantly reduces migration to the electrodes.

    Abstract translation: 使用环形激光陀螺仪的电流控制偏置来保护电极密封。 环形激光陀螺仪的框架具有多个连接到其上的电极。 在陀螺仪的操作期间在电极之间产生电场，这导致框架中的离子朝向最低电位迁移。 电极密封件位于电极和框架之间。 通过提供正电源电压并将电流控制连接到电源的非接地侧，安装结构可以处于最低电位。 然后离子将迁移到安装结构，这显着减少了向电极的迁移。

    SYSTEMS AND METHODS FOR THERMAL GRADIENT COMPENSATION FOR RING LASER GYROSCOPES
    18.
    发明申请
    SYSTEMS AND METHODS FOR THERMAL GRADIENT COMPENSATION FOR RING LASER GYROSCOPES 有权
    用于环形激光雕塑的热梯度补偿的系统和方法

    公开(公告)号：US20130085699A1

    公开(公告)日：2013-04-04

    申请号：US13250267

    申请日：2011-09-30

    Applicant: Alan Bruce Touchberry ,  Timothy J. Callaghan ,  Bruce A. Seiber

    Inventor： Alan Bruce Touchberry ,  Timothy J. Callaghan ,  Bruce A. Seiber

    IPC: G06F19/00

    CPC classification number: G01C19/662

    Abstract: Systems and methods for thermal gradient compensation for ring laser gyroscopes are provided. In one embodiment, a method for producing bias compensated angular rate measurements from a ring laser gyroscope comprises: sampling an angle measurement output from a laser block sensor to obtain an angular rate measurement; obtaining an laser block temperature measurement (Tblock) for the laser block sensor; obtaining a temperature gradient measurement (Tdiff) for at least one gradient line across a portion of the laser block sensor; calculating a rate bias error by applying parameters produced from the temperature measurement (Tblock) and the temperature gradient measurement (Tdiff) to a thermal gradient compensation model, wherein the thermal gradient compensation model includes at least one coefficient corresponding to the temperature gradient measurement (Tdiff); and calculating a difference between the angle rate measurement and the rate bias error to produce a bias compensated angular rate measurement.

    Abstract translation: 提供了用于环形激光陀螺仪的热梯度补偿的系统和方法。 在一个实施例中，一种用于从环形激光陀螺仪产生偏置补偿角速率测量的方法包括：对来自激光块传感器的角度测量输出进行采样以获得角速率测量; 获得激光块传感器的激光块温度测量（Tblock）; 对于穿过激光块传感器的一部分的至少一个梯度线获得温度梯度测量（Tdiff）; 通过将从温度测量（Tblock）和温度梯度测量（Tdiff）产生的参数应用到热梯度补偿模型来计算速率偏差误差，其中热梯度补偿模型包括对应于温度梯度测量的至少一个系数（Tdiff ）; 并且计算角速率测量和速率偏差误差之间的差以产生偏置补偿角速率测量。

    SYSTEMS AND METHODS FOR IMPROVED RING LASER GYROSCOPE DEVICES THROUGH MIX RATIO OPTIMIZATION
    19.
    发明申请
    SYSTEMS AND METHODS FOR IMPROVED RING LASER GYROSCOPE DEVICES THROUGH MIX RATIO OPTIMIZATION 审中-公开
    通过混合比优化改进环形激光晶体装置的系统和方法

    公开(公告)号：US20110274133A1

    公开(公告)日：2011-11-10

    申请号：US12774074

    申请日：2010-05-05

    Applicant: Christina M. Schober ,  Timothy J. Callaghan ,  Daniel L. Sittler ,  Leroy O. Thielman

    Inventor： Christina M. Schober ,  Timothy J. Callaghan ,  Daniel L. Sittler ,  Leroy O. Thielman

    IPC: H01S3/22 ,  H01S3/083

    CPC classification number: G01C19/661

    Abstract: Systems and methods for improved ring laser gyroscope devices through mix ratio optimization are provided. In one embodiment, a ring laser gyroscope device comprises: a laser block assembly having a cavity therein that defines a ring shaped laser beam path around the laser block assembly, the cavity containing a fill gas mixture comprising Helium and Neon, wherein the laser block assembly is characterized as having a Neon depletion life limiter; and a readout assembly optically coupled to the laser block assembly. The readout assembly outputs a laser intensity monitor (LIM) voltage that represents optical energy within the cavity. The fill gas mixture has a Helium to Neon ratio richer in Neon than a ratio that would produce a peak LIM voltage from the readout assembly.

    Abstract translation: 提供了通过混合比优化改进环形激光陀螺仪器件的系统和方法。 在一个实施例中，环形激光陀螺仪装置包括：激光器块组件，其中具有腔体，其限定围绕激光器块组件的环形激光束路径，所述腔体包含包含氦和氖的填充气体混合物，其中激光器块组件 其特征在于具有氖耗竭寿命限制器; 以及光学耦合到激光器组件的读出组件。 读出组件输出表示腔内的光能的激光强度监视器（LIM）电压。 填充气体混合物的氦与氖比例比从读出组件产生峰值LIM电压的比例更加丰富。

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