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公开(公告)号：US4783169A
公开(公告)日：1988-11-08
申请号：US764441
申请日：1985-08-09
CPC分类号： G01C19/70 , G01C19/665
摘要： A ring laser gyro having a cavity with at least one transducer-actuated mirror is controlled to conform to a preselected model of cavity operation. Control is accomplished by sampling cavity data, comparing the data to the model to generate an error signal, and controlling the mirror according to the error signal. In a preferred embodiment, at least two mirrors are dithered and the model defines an optimal amplitude of mirror dither at which theoretical lock-in error is zero. In another preferred embodiment, the sampled data corresponds to laser intensity within the cavity and the model defines an optimal intensity displaced from the maximum within an operating mode of the cavity. The model may define a plurality of operating modes of the cavity, ranked according to gyro performance for different values of a preselected environmental condition. The environmental condition is then sensed on an ongoing basis and used to select an optimal mode.
摘要翻译： 具有至少一个换能器致动反射镜的空腔的环形激光陀螺仪受到控制以符合预先选择的腔体操作模型。 通过对腔体数据进行采样，将数据与模型进行比较以产生误差信号，并根据误差信号控制反射镜来实现控制。 在优选实施例中，至少两个反射镜被抖动，并且模型定义了理论锁定误差为零的反射镜抖动的最佳幅度。 在另一优选实施例中，采样数据对应于空腔内的激光强度，并且模型限定了在空腔的操作模式内从最大值偏移的最佳强度。 模型可以定义腔的多个操作模式，根据陀螺仪性能对于预选环境条件的不同值进行排序。 然后，环境条件在持续的基础上被感测并用于选择最佳模式。
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2.发明授权Extraction of double-oscillation-frequency sinusoids in vibratory rotation sensors 有权振动旋转传感器中双振荡频率正弦波的提取
公开(公告)号：US6158282A
公开(公告)日：2000-12-12
申请号：US348427
申请日：1999-07-07
申请人： Anthony Matthews , Guy T. Varty , Paul C. Nguyen , David D. Lynch
发明人： Anthony Matthews , Guy T. Varty , Paul C. Nguyen , David D. Lynch
IPC分类号： G01C19/5691 , G01C19/00
CPC分类号： G01C19/5691
摘要： The invention is a vibratory rotation sensor comprising a housing, a resonator attached to the housing, first and second sets of electrodes, and a signal processor. One set of electrodes are attached to the housing and the other set of electrodes are attached to the resonator, the first set opposing the second set. Each set consists of one or more electrodes. The signal processor has one or more input ports capacitively connected to one or more of the first set of electrodes, the signal processor extracting from the signals appearing at the one or more input ports one or more double-frequency sinusoids having frequencies of twice the frequency of oscillation of the resonator.
摘要翻译： 本发明是一种振动旋转传感器，其包括壳体，附接到壳体的谐振器，第一和第二组电极以及信号处理器。 一组电极附接到壳体，另一组电极附接到谐振器，第一组与第二组相对。 每组由一个或多个电极组成。 信号处理器具有电容性地连接到第一组电极中的一个或多个的一个或多个输入端口，信号处理器从出现在一个或多个输入端口处的信号中提取一个或多个频率为频率的两倍的双频正弦曲线 谐振器的振荡。
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3.发明授权Method and apparatus for generating driving signals for a vibratory rotation sensor 失效用于产生振动旋转传感器的驱动信号的方法和装置
公开(公告)号：US6079270A
公开(公告)日：2000-06-27
申请号：US70334
申请日：1998-04-30
申请人： Anthony Matthews , Guy T. Varty
发明人： Anthony Matthews , Guy T. Varty
CPC分类号： G01C19/567
摘要： The invention is a method and apparatus for generating a plurality of driving signals for a vibratory rotation sensor, the plurality of driving signals resulting in a plurality of readout signals from the vibratory rotation sensor. The method comprises the steps of determining a 2.times. tracking angle rate, transforming the 2.times. tracking angle rate into a trig function rate, transforming the trig function rate into a second trig function, and generating the plurality of driving signals utilizing the second trig function. The 2.times. tracking angle rate, determined from the plurality of readout signals, is the time rate of change of twice the tracking angle, the tracking angle being an angle which tracks the orientation angle of the standing-wave pattern of the vibratory rotation sensor. The trig function rate is the time rate of change of a first trig function, the first trig function being an approximation to a mathematically-exact (M-E) trig function. The M-E trig function is selected from the group consisting of the tangent of twice the tracking angle and the cotangent of twice the tracking angle. The second trig function is also an approximation to the M-E trig function.
摘要翻译： 本发明是一种用于产生用于振动旋转传感器的多个驱动信号的方法和装置，所述多个驱动信号产生来自振动旋转传感器的多个读出信号。 该方法包括以下步骤：确定2x跟踪角速率，将2x跟踪角速率变换为触发功能速率，将触发功能速率转换为第二触发功能，以及利用第二触发功能生成多个驱动信号。 从多个读出信号确定的2倍跟踪角速率是跟踪角度的两倍的时间变化率，跟踪角度是跟踪振动旋转传感器的驻波图案的取向角度的角度。 触发功能率是第一触发功能的时间变化率，第一触发功能是数学精确（M-E）触发功能的近似值。 M-E触发功能选自由跟踪角度的两倍的切线和跟踪角度的两倍的余光。 第二个触发功能也是M-E触发功能的近似。
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公开(公告)号：US06065340A
公开(公告)日：2000-05-23
申请号：US123959
申请日：1998-07-29
申请人： Anthony Matthews , Guy T. Varty , David D. Lynch
发明人： Anthony Matthews , Guy T. Varty , David D. Lynch
IPC分类号： G01C19/5691 , G01P9/04 , G01C19/00
CPC分类号： G01C19/5691
摘要： The invention is an apparatus for sensing rotation comprising a housing, a resonator attached to the housing, a first set of electrodes consisting of one or more electrically-connected electrodes, and a second set of N electrodes. The resonator is a rotationally-symmetric, thin-walled object capable of vibrating in at least one of a plurality of standing-wave modes. The orientation of a standing wave with respect to a reference point on the resonator is specified by an orientation angle. The first set of electrodes are attached to either the resonator or the housing. The N electrodes of the second set are attached around the circumference of either (1) the housing if the first set of electrodes is attached to the resonator or (2) the resonator if the first set of electrodes is attached to the housing. The n'th electrode of the second set is attached at angular position .theta..sub.n with respect to the reference point on the resonator, opposing one or more of the second set of electrodes. The apparatus further comprises driving electronics which supplies driving signals to one or more of the second set of electrodes and sensing electronics which receives the first-set signal appearing on the first set of electrodes as a result of the capacitive coupling between the first- and second-set electrodes. The sensing electronics also supplies one or more signals to the driving electronics.
摘要翻译： 本发明是用于感测旋转的装置，其包括壳体，附接到壳体的谐振器，由一个或多个电连接电极组成的第一组电极和第二组N个电极。 谐振器是能够以多个驻波模式中的至少一个振动的旋转对称的薄壁物体。 相对于谐振器上的参考点的驻波的取向由取向角度来指定。 第一组电极连接到谐振器或外壳上。 如果第一组电极附接到谐振器，则第二组的N个电极围绕（1）壳体的圆周附接，或者（2）如果第一组电极附接到壳体，则该谐振器。 第二组的第n个电极相对于共振器上的参考点以相对于第二组电极中的一个或多个的角位置θn附接。 该装置还包括驱动电子器件，其将驱动信号提供给第二组电极中的一个或多个并且感测电子装置，其接收由于第一和第二电极之间的电容耦合而出现在第一组电极上的第一组信号 电极。 感测电子设备还向驱动电子设备提供一个或多个信号。
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公开(公告)号：US5983719A
公开(公告)日：1999-11-16
申请号：US993499
申请日：1997-12-18
申请人： Anthony Matthews , Peter K. Tseng , Guy T. Varty
发明人： Anthony Matthews , Peter K. Tseng , Guy T. Varty
IPC分类号： G01C19/5691 , G01P9/04
CPC分类号： G01C19/5691
摘要： In a vibrating rotation sensor of the hemispherical resonator gyro type (HRG), operating in the whole angle mode wherein the standing-wave components are measured to provide a measure of the pattern angle, the digital signal processor functions to control the digital to analog converter output signal in order to keep the highly amplified analog to digital input signal, the difference between the pattern angle and excitation angle, within the analog to digital converter window. The analog to digital converter window is set at n times the discrete level of the digital to analog converter. A digital feedback loop in the digital signal processor continually corrects the tracking angle to control the excitation voltage.
摘要翻译： 在半球谐振器陀螺仪（HRG）的振动旋转传感器中，以整个角度模式操作，其中测量驻波分量以提供图形角度的测量，数字信号处理器用于控制数模转换器 输出信号为了保持高放大的模拟数字输入信号，模式角与激励角之间的差异，在模数转换器窗口内。 模数转换器窗口设置在数模转换器的离散电平的n倍。 数字信号处理器中的数字反馈环路连续校正跟踪角度以控制激励电压。
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公开(公告)号：US5033854A
公开(公告)日：1991-07-23
申请号：US447560
申请日：1989-12-06
申请人： Anthony Matthews , Guy T. Varty , J. Scott Darling
发明人： Anthony Matthews , Guy T. Varty , J. Scott Darling
IPC分类号： G01C19/72
CPC分类号： G01C19/728 , G01C19/721
摘要： Apparatus and methods are disclosed for the time division multiplexing of fiberoptic gyros to reduce the amount of control electronics required. Each of a plurality of gyros is sampled at a rate of n.tau., where .tau. is the gyro optical transit time and n is an integer. The sampled signal is fed to a digital signal processor (DSP) for processing and used to form a rate feedback signal. The rate feedback signal is converted to analog form to drive the phase modulator drive of each gyro. In preferred embodiments the multiplexed sample rate is at least ten times the bandwidth of the gyros. The rate data can be filtered and output by the DSP and the DSP can integrate the rate data to give angle data. The use of precision analog circuits is avoided.
摘要翻译： 公开了用于光纤陀螺仪的时分复用的装置和方法，以减少所需的控制电子设备的数量。 以n tau的速率对多个陀螺仪中的每一个进行采样，其中τ是陀螺仪光通过时间，n是整数。 采样信号被馈送到数字信号处理器（DSP）进行处理并用于形成速率反馈信号。 速率反馈信号被转换为模拟形式以驱动每个陀螺仪的相位调制器驱动。 在优选实施例中，多路复用采样率是陀螺仪带宽的至少十倍。 速率数据可以由DSP进行滤波和输出，DSP可以将速率数据集成到角度数据中。 避免使用精密模拟电路。
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7.发明申请公开(公告)号：US20070089310A1
公开(公告)日：2007-04-26
申请号：US11258706
申请日：2005-10-26
申请人： Guy Varty , Anthony Matthews
发明人： Guy Varty , Anthony Matthews
IPC分类号： G01C19/00
CPC分类号： G01C19/5691 , G01C19/5776
摘要： Apparatus, systems, and methods to control a plurality of gyroscopes utilizing intermediate frequencies are disclosed. The gyroscopes are configured to operate at the same pre-determined intermediate frequency. To accomplish this, the natural frequency of each gyroscope is determined, and a reference signal is added to the output signal of its respective gyroscope such that the sum of the natural frequency and the reference signal frequency equals the pre-determined intermediate frequency. The output signal from each gyroscope is transmitted to a common inertial data processor, and the inertial data processor outputs a directional signal. The directional signal includes a representation of angles from an X-axis, a Y-axis, and a Z-axis. Since each signal output by the gyroscopes has the same frequency, the loss of data is decreased and the accuracy of the data increased.
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8.发明授权
公开(公告)号：US4875774A
公开(公告)日：1989-10-24
申请号：US189047
申请日：1988-05-02
IPC分类号： G01C19/66
CPC分类号： G01C19/662
摘要： An apparatus and method of determining gyro het phase and acceleration at turnaround using the digitized heterodyne signals. A digital design that incorporates the necessary logic and is integrated into a gyro unit. An integer algorithm that processes the turnaround data to produce a phase correction that can be added to the gyroscope count. Separation of high speed data processing from lower rate data to simplify the code and permit evaluation of turnaround correction performance.
摘要翻译： 使用数字化外差信号确定转向陀螺仪相位和加速度的装置和方法。 包含必要逻辑并被集成到陀螺仪单元中的数字设计。 一个整数算法，处理周转数据以产生可以添加到陀螺仪计数的相位校正。 将高速数据处理与低速数据分离，以简化代码，并允许评估周转校正性能。
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公开(公告)号：US5902930A
公开(公告)日：1999-05-11
申请号：US889865
申请日：1997-07-08
申请人： Anthony Matthews , Guy Thomas Varty
发明人： Anthony Matthews , Guy Thomas Varty
IPC分类号： G01C19/567 , G01P9/04
CPC分类号： G01C19/567
摘要： The invention is a method for reading out a vibratory rotation sensor comprising the steps of (1) driving the vibratory rotation sensor with a plurality of driving signals and (2) obtaining one or more readout signals resulting from the interaction of the driving signals and the vibratory rotation sensor. The functional dependence of all tracking-angle-dependent driving signals is expressible for a specified range of tracking-angle values as a single specific function of the tracking angle. A tracking-angle-dependent driving signal is the sum of two or more component signals where only one of the component signals is dependent on tracking angle. The single specific function specified for any one of a plurality of tracking-angle range of values can be the same as or different than the single specific function specified for any other tracking-angle range of values. In the preferred embodiment of the invention, the single specific function is the tangent of twice the tracking angle for certain tracking-angle ranges of values and is the cotangent of twice the tracking angle for other tracking-angle ranges of values. The readout signal has a functional dependence on both the tracking angle and the difference of the orientation angle of the standing wave pattern associated with the vibratory rotation sensor and the tracking angle.
摘要翻译： 本发明是一种用于读出振动旋转传感器的方法，包括以下步骤：（1）利用多个驱动信号驱动振动旋转传感器，以及（2）获得由驱动信号和 振动旋转传感器。 所有跟踪角度相关的驱动信号的功能依赖性可以作为跟踪角度的单个特定函数在指定的跟踪角度范围内表达。 跟踪角相关的驱动信号是两个或更多个分量信号之和，其中分量信号中只有一个取决于跟踪角。 针对多个跟踪角范围值中的任何一个指定的单个特定功能可以与为任何其它跟踪角范围值指定的单个特定功能相同或不同。 在本发明的优选实施例中，单个特定功能是对于某些跟踪角范围的值的跟踪角的两倍的切线，并且是对于其它跟踪角范围的值的跟踪角的两倍。 读出信号对跟踪角度和与振动旋转传感器相关的驻波图案的取向角与跟踪角度的差异具有功能依赖性。
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公开(公告)号：US20140202179A1
公开(公告)日：2014-07-24
申请号：US14238369
申请日：2012-08-13
IPC分类号： F25D29/00
CPC分类号： F25D29/001 , F25B9/12
摘要： A method is provided of operating a cryogenic cooling system, in which a target region for receiving a sample is cooled by a dilution refrigerator containing an operational fluid. Firstly any operational fluid is removed from the dilution refrigerator. Target apparatus comprising the sample is loaded from a high temperature location to the target region. The target apparatus is then pre-cooled in the target region to a first temperature using a mechanical refrigerator. The operational fluid is then supplied to the dilution refrigerator and the dilution refrigerator operated so as to cool the target apparatus in the target location to a second temperature that is lower than the first temperature. A suitable system for performing the method is also disclosed.
摘要翻译： 提供了一种操作低温冷却系统的方法，其中用于接收样品的目标区域被包含操作流体的稀释制冷器冷却。 首先，从稀释冰箱中取出任何操作流体。 包括样品的目标装置从高温位置加载到目标区域。 然后使用机械冰箱将目标装置在目标区域中预冷却至第一温度。 然后将操作流体供应到稀释制冷器和操作的稀释制冷器，以将目标装置中的目标装置冷却至低于第一温度的第二温度。 还公开了一种用于执行该方法的合适系统。
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