-
1.发明授权Method and apparatus for reducing quantization error in laser gyro test data through high speed filtering 失效用于通过高速滤波减少激光陀螺测试数据中的量化误差的方法和装置
公开(公告)号：US4634283A
公开(公告)日：1987-01-06
申请号：US590111
申请日：1984-03-19
申请人： John G. Mark , Alison K. Brown , Anthony Matthews
发明人： John G. Mark , Alison K. Brown , Anthony Matthews
摘要： The use of a high speed moving average filter is shown to filter high speed errors, including white noise in angle and quantization errors, from the output data of a ring laser gyro while it is being tested. The filtered data permits investigation of the lower speed, random walk in angle error of the gyro being tested. For best results, several moving average filters are connected in series.
摘要翻译： 显示使用高速移动平均滤波器来测试来自环形激光陀螺仪的输出数据的高速误差，包括角度上的白噪声和量化误差。 滤波后的数据允许调查正在测试的陀螺仪的较低速度，随机游走角度误差。 为了获得最佳效果，几个移动平均滤波器串联连接。
-
2.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。
-
3.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.
-
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。
-
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。
-
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。
-
公开(公告)号：US20130319019A1
公开(公告)日：2013-12-05
申请号：US13988446
申请日：2011-11-11
IPC分类号： F25B41/00
CPC分类号： F25B41/00 , F25B9/10 , F25B2500/26 , F25D19/006 , F28D15/02 , F28D15/0275
摘要： Cooling apparatus is provided which comprises a mechanical refrigerator and a heat pipe. The mechanical refrigerator has a first cooled stage and a second cooled stage, the second cooled stage being adapted to be coupled thermally with target apparatus to be cooled. The heat pipe has a first part coupled thermally to the first stage of the mechanical refrigerator and a second part coupled thermally to a cooled member which may comprise the second stage of the mechanical refrigerator. The heat pipe is adapted to contain a condensable gaseous coolant when in use. An example coolant is Krypton. The apparatus is operated in a first cooling mode in which the temperature of the cooled member causes the coolant within the second part of the heat pipe to be gaseous and the temperature of the first stage causes the coolant in the first part to condense, whereby the cooled member is cooled by the movement of the condensed liquid is from the first part to the second part of the heat pipe. When the cooled member is the second stage of the mechanical refrigerator, the heat pipe provides heat between the higher and lower temperature cooled stages during cooling. An associated method of operating such apparatus is also described.
摘要翻译： 提供了包括机械制冷机和热管的冷却装置。 机械制冷机具有第一冷却级和第二冷却级，第二冷却级适于与要冷却的目标装置热耦合。 热管具有与机械式冷冻机的第一级热耦合的第一部分和与能够包括机械式冰箱的第二级的冷却部件热耦合的第二部分。 热管在使用时适于容纳可冷凝的气态冷却剂。 一个例子冷却液是氪气。 该装置在第一冷却模式下操作，其中冷却部件的温度使得热管的第二部分内的冷却剂为气态，第一阶段的温度使得第一部分中的冷却剂冷凝，由此， 冷却的构件通过冷凝液体从热管的第一部分到第二部分的运动来冷却。 当冷却部件是机械式冰箱的第二级时，热管在冷却期间在较高温度和较低温度的冷却级之间提供热量。 还描述了操作这种装置的相关方法。
-
公开(公告)号：US07296468B2
公开(公告)日：2007-11-20
申请号：US11258780
申请日：2005-10-26
申请人： Guy Thomas Varty , Anthony Matthews
发明人： Guy Thomas Varty , Anthony Matthews
IPC分类号： G01P9/04
CPC分类号： G01C19/5691 , G01C19/5776
摘要： Apparatus, systems, and methods to control the frequency of a plurality of gyroscopes are disclosed. The gyroscopes are configured such that each individual gyroscope operates independently of one another and at the same pre-determined 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 frequency. Thus, each individual gyroscope, though it may include its own individual natural frequency, operates autonomously at the pre-determined frequency.
摘要翻译： 公开了用于控制多个陀螺仪的频率的装置，系统和方法。 陀螺仪配置成使得每个单独的陀螺仪彼此独立地并且以相同的预定频率运行。 为了实现这一点，确定每个陀螺仪的固有频率，并且将参考信号添加到其各自陀螺仪的输出信号，使得固有频率和参考信号频率之和等于预定频率。 因此，每个单独的陀螺仪虽然可以包括其自己的单独的固有频率，但是以预定的频率自主地运行。
-
公开(公告)号：US20070089509A1
公开(公告)日：2007-04-26
申请号：US11258780
申请日：2005-10-26
申请人： Guy Varty , Anthony Matthews
发明人： Guy Varty , Anthony Matthews
IPC分类号： G01P15/14
CPC分类号： G01C19/5691 , G01C19/5776
摘要： Apparatus, systems, and methods to control the frequency of a plurality of gyroscopes are disclosed. The gyroscopes are configured such that each individual gyroscope operates independently of one another and at the same pre-determined 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 frequency. Thus, each individual gyroscope, though it may include its own individual natural frequency, operates autonomously at the pre-determined frequency.
-
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。
-
-
-
-
-
-
-
-
-
搜索结果
24 条记录 (耗时 0.022 秒)
