公开(公告)号：US20120328418A1

公开(公告)日：2012-12-27

申请号：US13168178

申请日：2011-06-24

Applicant: NAN YANG ,  JEFF A. JENSEN ,  ROBERT C. GRIFFITH

Inventor： NAN YANG ,  JEFF A. JENSEN ,  ROBERT C. GRIFFITH

IPC: F01D25/16

CPC classification number: F01D25/186 ,  F04D29/104 ,  F05D2220/40 ,  F16C19/184 ,  F16C33/762 ,  F16C2360/24 ,  F16J15/40

Abstract: A turbocharger includes a turbine section, a compressor section and a bearing section. A turbine wheel and a compressor wheel are mounted on a shaft and the shaft is rotatably mounted in a bore of a housing. A lubrication system circulates lubricant through the bearing section. First and second spaced apart seals are positioned along the shaft. A recess is positioned between the first seal and the second seal to define an air buffer chamber. The air buffer chamber is provided with pressurized air to discourage lubricant leakage past the first seal.

Abstract translation: 涡轮增压器包括涡轮部分，压缩机部分和轴承部分。 涡轮机叶轮和压缩机叶轮安装在轴上，并且轴可旋转地安装在壳体的孔中。 润滑系统通过轴承部分循环润滑剂。 第一和第二间隔开的密封件沿着轴定位。 凹部位于第一密封件和第二密封件之间以限定空气缓冲室。 空气缓冲室设有加压空气以阻止经过第一密封的润滑剂泄漏。

公开(公告)号：US20170276698A1

公开(公告)日：2017-09-28

申请号：US15079207

申请日：2016-03-24

Applicant: MICHAEL D. BULATOWICZ ,  ROBERT C. GRIFFITH ,  HENRY C. ABBINK ,  DARYL K. SAKAIDA ,  PHILIP R. CLARK

Inventor： MICHAEL D. BULATOWICZ ,  ROBERT C. GRIFFITH ,  HENRY C. ABBINK ,  DARYL K. SAKAIDA ,  PHILIP R. CLARK

IPC: G01P15/13

CPC classification number: G01P15/131 ,  G01P15/0802 ,  G01P15/125 ,  G01P2015/0837

Abstract: Embodiments of the invention include an accelerometer system. The system includes an accelerometer sensor comprising first and second electrode configurations and an inertial mass between the first and second electrode configurations. In one example, the accelerometer sensor being fabricated as symmetrically arranged about each of three orthogonal mid-planes. The system also includes an accelerometer controller configured to apply control signals to each of the first and second electrode configurations to provide respective forces to maintain the inertial mass at a null position between the first and second electrode configurations. The accelerometer controller can measure a first pickoff signal and a second pickoff signal associated with the respective first and second electrode configurations. The first and second pickoff signals can be indicative of a displacement of the inertial mass relative to the null position. The accelerometer controller can calculate an acceleration based on the first and second pickoff signals.

公开(公告)号：US20130327146A1

公开(公告)日：2013-12-12

申请号：US13907333

申请日：2013-05-31

Applicant: A. DOUGLAS MEYER ,  MICHAEL D. BULATOWICZ ,  MICHAEL S. LARSEN ,  ROBERT C. GRIFFITH

Inventor： A. DOUGLAS MEYER ,  MICHAEL D. BULATOWICZ ,  MICHAEL S. LARSEN ,  ROBERT C. GRIFFITH

IPC: G01P15/093

CPC classification number: G01P15/093 ,  G01P15/08 ,  G01P15/18

Abstract: One embodiment includes an accelerometer system. The system includes a laser configured to emit an optical beam at a linear polarization. The system also includes an optical cavity system. The optical cavity system includes a minor that is coupled to an accelerometer housing via a spring and is configured to reflect the optical beam. The optical cavity system also includes at least one photodetector configured to receive at least a portion of at least one of the optical beam and the reflected optical beam and to generate an acceleration signal that is indicative of motion of the mirror resulting from an external acceleration acting upon the accelerometer housing. The system further includes an acceleration processor configured to calculate a magnitude of the external acceleration based on the acceleration signal.

Abstract translation: 一个实施例包括加速度计系统。 该系统包括被配置为以线偏振发射光束的激光器。 该系统还包括光腔系统。 光腔系统包括通过弹簧联接到加速度计壳体的小型并且被构造成反射光束。 光腔系统还包括至少一个光电检测器，其被配置为接收光束和反射光束中的至少一个的至少一部分，并且产生指示由外部加速度作用产生的反射镜的运动的加速度信号 在加速度计外壳上。 该系统还包括加速度处理器，该加速度处理器被配置为基于加速度信号来计算外部加速度的大小。

公开(公告)号：US20160202062A1

公开(公告)日：2016-07-14

申请号：US14593827

申请日：2015-01-09

Applicant: ROBERT C. GRIFFITH

Inventor： ROBERT C. GRIFFITH

IPC: G01C19/62 ,  G01R33/26

CPC classification number: G01C19/62 ,  G01R33/26

Abstract: An NMR gyroscope system includes a vapor cell that includes an alkali metal, a first gyromagnetic isotope, and a second gyromagnetic isotope, and a pump laser generates an optical pump beam. A magnetic field generator generates a magnetic field that is substantially aligned with a sensitive axis to cause the first and second gyromagnetic isotopes to counter-precess based on the optical pump beam and the alkali metal. A probe laser provides an optical probe beam through the vapor cell that exits the vapor cell as a detection beam, and a detection system monitors the detection beam and to determine a rotation of the NMR gyroscope system about a sensitive axis based on a modulation of the detection beam in response to precession of the first and second gyromagnetic isotopes and based on a predetermined constant ratio of precession of the first and second gyromagnetic isotopes.

Abstract translation: NMR陀螺仪系统包括包含碱金属，第一回旋磁同位素和第二回旋磁同位素的蒸汽池，泵激光器产生光泵浦光束。 磁场发生器产生基本上与敏感轴对准的磁场，以使第一和第二回旋磁同位素基于光泵浦光束和碱金属反相进入。 探针激光器提供穿过蒸气室的光学探针束，其作为检测光束离开蒸汽单元，检测系统监测检测光束，并基于调制的方式确定NMR陀螺仪系统围绕敏感轴的旋转 响应于所述第一和第二回旋磁同位素的进动并且基于所述第一和第二回旋磁同位素的进动的预定的恒定比例来检测所述检测光束。

公开(公告)号：US20140184216A1

公开(公告)日：2014-07-03

申请号：US13727926

申请日：2012-12-27

Applicant: THAD G. WALKER ,  MICHAEL D. BULATOWICZ ,  MICHAEL S. LARSEN ,  ROBERT C. GRIFFITH ,  PHILIP R. CLARK

Inventor： THAD G. WALKER ,  MICHAEL D. BULATOWICZ ,  MICHAEL S. LARSEN ,  ROBERT C. GRIFFITH ,  PHILIP R. CLARK

IPC: G01R33/26

CPC classification number: G01R33/26 ,  G01C19/62

Abstract: One embodiment includes a sensor system. The system includes a cell system comprising a pump laser configured to generate a pump beam to polarize alkali metal particles enclosed within a sensor cell. The system also includes a detection system comprising a probe laser configured to generate a probe beam. The detection system can also be configured to calculate at least one measurable parameter based on characteristics of the probe beam passing through the sensor cell resulting from precession of the polarized alkali metal particles in response to an applied magnetic field. The system further includes an AC Stark shift control system configured to frequency-modulate the pump beam and to control a center frequency of a frequency-modulated pump beam based on the characteristics of the probe beam passing through the sensor cell to substantially stabilize and mitigate the effects of AC Stark shift on the at least one measurable parameter.

Abstract translation: 一个实施例包括传感器系统。 该系统包括一个电池系统，该电池系统包括被配置成产生泵浦光束以使包围在传感器电池内的碱金属颗粒极化的泵浦激光器。 该系统还包括检测系统，其包括被配置为产生探测光束的探测激光器。 检测系统还可以被配置为基于由施加的磁场响应于偏振的碱金属颗粒的进动而导致通过传感器单元的探针束的特性来计算至少一个可测量的参数。 该系统还包括AC Stark变速控制系统，其配置成对泵浦波束进行频率调制，并且基于通过传感器单元的探测光束的特性来控制调频泵浦光束的中心频率，以基本上稳定和减轻 AC Stark移位对至少一个可测量参数的影响。

公开(公告)号：US20170205476A1

公开(公告)日：2017-07-20

申请号：US15474433

申请日：2017-03-30

Applicant: MICHAEL S. LARSEN ,  ROBERT C. GRIFFITH ,  MICHAEL D. BULATOWICZ ,  PHILIP R. CLARK

Inventor： MICHAEL S. LARSEN ,  ROBERT C. GRIFFITH ,  MICHAEL D. BULATOWICZ ,  PHILIP R. CLARK

IPC: G01R33/26 ,  G01R33/60 ,  G01R33/44 ,  G01R33/032

CPC classification number: G01R33/26 ,  G01R33/032 ,  G01R33/24 ,  G01R33/443 ,  G01R33/60

Abstract: One embodiment of the invention includes a magnetometer system. The system includes a sensor cell comprising alkali metal particles and a probe laser configured to provide a probe beam through the sensor cell. The system also includes a detection system configured to implement nuclear magnetic resonance (NMR) detection of a vector magnitude of an external magnetic field in a first of three orthogonal axes based on characteristics of the probe beam passing through the sensor cell and to implement electron paramagnetic resonance (EPR) detection of a vector magnitude of the external magnetic field in a second and a third of the three orthogonal axes based on the characteristics of the probe beam passing through the sensor cell. The system further includes a controller configured to calculate a scalar magnitude of the external magnetic field based on the magnitude of the external magnetic field in each of the three orthogonal axes.

公开(公告)号：US20160238442A1

公开(公告)日：2016-08-18

申请号：US14622158

申请日：2015-02-13

Applicant: ROBERT C. GRIFFITH

Inventor： ROBERT C. GRIFFITH

IPC: G01J1/42 ,  G01J1/44

CPC classification number: G01J1/4228 ,  G01J1/0295 ,  G01J1/44

Abstract: A circuit includes a first photo detector and a second photo detector to receive a first and second light input signal, respectfully, to generate a first current output signal and second current output signal respectively in response to the respective light input signals. A current multiplier stage receives the second current output signal from the second photo detector to generate a multiplied current output signal that is greater than the magnitude of the second current output signal. A differential multiplier having a first current path receives a portion of the multiplied current output signal and a second current path that receives another portion of the multiplied current output signal. The first current path is in series with the first current output signal to facilitate balancing of currents between the first current output signal of the first photo detector and the second current output signal of the second photo detector.

Abstract translation: 电路包括第一光电检测器和第二光电检测器，用于接收第一和第二光输入信号，以分别响应于相应的光输入信号产生第一电流输出信号和第二电流输出信号。 电流倍增器级接收来自第二光电检测器的第二电流输出信号，以产生大于第二电流输出信号幅度的相乘的电流输出信号。 具有第一电流路径的差分乘法器接收相乘电流输出信号的一部分和接收相乘电流输出信号的另一部分的第二电流路径。 第一电流路径与第一电流输出信号串联，以便于平衡第一光电检测器的第一电流输出信号和第二光电检测器的第二电流输出信号之间的电流。

公开(公告)号：US20140159718A1

公开(公告)日：2014-06-12

申请号：US13711199

申请日：2012-12-11

Applicant: MICHAEL S. LARSEN ,  ROBERT C. GRIFFITH ,  MICHAEL D. BULATOWICZ ,  PHILIP R. CLARK

Inventor： MICHAEL S. LARSEN ,  ROBERT C. GRIFFITH ,  MICHAEL D. BULATOWICZ ,  PHILIP R. CLARK

IPC: G01R33/24

CPC classification number: G01R33/26 ,  G01R33/032 ,  G01R33/24 ,  G01R33/443 ,  G01R33/60

Abstract: One embodiment of the invention includes a magnetometer system. The system includes a sensor cell comprising alkali metal particles and a probe laser configured to provide a probe beam through the sensor cell. The system also includes a detection system configured to implement nuclear magnetic resonance (NMR) detection of a vector magnitude of an external magnetic field in a first of three orthogonal axes based on characteristics of the probe beam passing through the sensor cell and to implement electron paramagnetic resonance (EPR) detection of a vector magnitude of the external magnetic field in a second and a third of the three orthogonal axes based on the characteristics of the probe beam passing through the sensor cell. The system further includes a controller configured to calculate a scalar magnitude of the external magnetic field based on the magnitude of the external magnetic field in each of the three orthogonal axes.

Abstract translation: 本发明的一个实施例包括磁力计系统。 该系统包括包含碱金属颗粒的传感器单元和被配置为提供探针束通过传感器单元的探针激光器。 该系统还包括检测系统，其被配置为基于通过传感器单元的探测光束的特性来实现三个正交轴中的第一个中的外部磁场的矢量幅值的核磁共振（NMR）检测，并实现电子顺磁性 基于通过传感器单元的探测光束的特性，在三个正交轴的第二和第三个中的外部磁场的矢量幅度的共振（EPR）检测。 该系统还包括控制器，其被配置为基于三个正交轴中的每一个中的外部磁场的大小来计算外部磁场的标量。