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公开(公告)号：US20240264475A1
公开(公告)日：2024-08-08
申请号：US18164968
申请日：2023-02-06
CPC分类号： G02F1/0955 , G01C19/721 , G02F1/0136 , G02F1/092 , G02F2203/50
摘要： One example includes an optical isolator system. An optical isolator element transmits a first optical beam provided at a first port to be output from a second port and blocks a second optical beam provided at the second port from being output from the first port. The optical beams each include a first component and a second component that are orthogonally linearly polarized. The optical isolator element can provide optical isolation based on transverse shifting the first and second components of the optical beams relative to each other to provide propagation of the first optical beam from the first port to the second port and to prevent propagation of the second optical beam from the second port to the first port. At least one phase adjuster adjusts a relative phase of the first and second components of the first optical beam to align the components of the first optical beam.
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公开(公告)号：US20160341553A1
公开(公告)日：2016-11-24
申请号：US15226573
申请日：2016-08-02
IPC分类号： G01C19/72
CPC分类号： G01C19/721 , G01C19/00
摘要： A control system includes a processor that operates one or more control loops that enable gyroscopic angular measurement for an inertial measurement unit (IMU). Each of the one or more control loops operates over a range of set points defined for each of the respective control loops. A dynamic loop adjuster receives environmental input data to determine environmental conditions for the IMU. The dynamic loop adjuster alters at least one of the set points for at least one of the one or more control loops operated by the processor based on the determined environmental conditions.
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公开(公告)号：US20240077315A1
公开(公告)日：2024-03-07
申请号：US17901255
申请日：2022-09-01
CPC分类号： G01C21/1656 , G01B11/27
摘要： One example includes a navigation system. The navigation system includes an inertial navigation system (INS) that is configured to provide a coordinate frame corresponding to an inertial reference of the INS relative to a geodetic coordinate system. The coordinate frame includes a reference axis that defines a reference orientation of the INS. The system also includes an optical tracking device configured to obtain a reference image to determine an orientation of a boresight axis of the optical tracking device. The system further includes an alignment controller configured to compare the reference axis based on the coordinate frame and the boresight axis based on the reference image to determine an angular misalignment between the reference axis and the boresight axis, and to adjust the reference orientation to align the reference axis to the boresight axis based on the determined angular misalignment.
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公开(公告)号：US20140132186A1
公开(公告)日：2014-05-15
申请号：US13676834
申请日：2012-11-14
申请人： DANIEL A. TAZARTES
发明人： DANIEL A. TAZARTES
IPC分类号： G01H3/00
CPC分类号： G01H3/00 , G01C19/5776
摘要： A system is provided for controlling the amplitude of a vibrating resonant sensor through a drive signal applied to the resonator. The system comprises a controller that provides the drive signal to a forcer coupled to the resonator to excite the resonator into vibration at its resonant frequency. The system further comprises a buffer having an input node that receives charge of a pickoff capacitor of the resonator that is a measure of the resonator vibration and a current reference waveform. The buffer provides an output that is a difference signal that represents an error of the resonator vibration that corresponds to a difference between the measured resonator vibration and the current reference waveform, wherein the controller adjusts the drive signal in order to null the difference signal.
摘要翻译： 提供一种用于通过施加到谐振器的驱动信号来控制振动谐振传感器的振幅的系统。 该系统包括控制器，该控制器将驱动信号提供给耦合到谐振器的振子，以将谐振器激发到其谐振频率处的振动。 该系统还包括具有输入节点的缓冲器，该输入节点接收作为谐振器振动和电流参考波形的量度的谐振器的检测电容器的电荷。 缓冲器提供输出，其是表示谐振器振动的误差的差分信号，其对应于所测量的谐振器振动与当前参考波形之间的差异，其中控制器调节驱动信号以使差分信号为零。
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公开(公告)号：US20150204668A1
公开(公告)日：2015-07-23
申请号：US14161270
申请日：2014-01-22
IPC分类号： G01C19/00
CPC分类号： G01C19/721 , G01C19/00
摘要： A control system includes a processor that operates one or more control loops that enable gyroscopic angular measurement for an inertial measurement unit (IMU). Each of the one or more control loops operates over a range of set points defined for each of the respective control loops. A dynamic loop adjuster receives environmental input data to determine environmental conditions for the IMU. The dynamic loop adjuster alters at least one of the set points for at least one of the one or more control loops operated by the processor based on the determined environmental conditions.
摘要翻译： 一种控制系统包括一个操作一个或多个控制回路的处理器，该控制回路允许用于惯性测量单元（IMU）的陀螺仪角度测量。 一个或多个控制回路中的每个控制回路在为每个相应控制回路定义的设定点的范围内操作。 动态环路调节器接收环境输入数据，以确定IMU的环境条件。 动态环路调整器基于所确定的环境条件来改变由处理器操作的一个或多个控制回路中的至少一个的设定点中的至少一个。
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公开(公告)号：US20140132961A1
公开(公告)日：2014-05-15
申请号：US13676878
申请日：2012-11-14
CPC分类号： G01C19/721 , G01C19/72 , G01C25/00 , Y10T29/49826
摘要： A fiber optic gyroscope (FOG) is provided. The FOG comprises a depolarizer that receives light from a light source, a multifunction integrated optic chip (MIOC) and a sensing coil coupled to outputs of the MIOC. The FOG also includes a polarizer coupled between an output of the depolarizer and an input of the MIOC. The polarizer mitigates polarization non-reciprocity (PNR) bias error and enhances the polarization extinction ratio (PER) of the FOG.
摘要翻译： 提供光纤陀螺仪（FOG）。 FOG包括接收来自光源的光的去偏振器，多功能集成光学芯片（MIOC）和耦合到MIOC的输出的感测线圈。 FOG还包括耦合在去极化器的输出端和MIOC输入端之间的偏振器。 偏振器减轻了极化不可逆（PNR）偏置误差，增强了FOG的偏振消光比（PER）。
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