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公开(公告)号：US5485273A
公开(公告)日：1996-01-16
申请号：US690174
申请日：1991-04-22
CPC分类号： G01C19/66
摘要： Disclosed herein is a Ring Laser Gyroscope Enhanced Resolution System comprising, in a preferred embodiment, a sampling frequency modulation phase-locked loop (or "chirp") which is used in combination with the fast filter. Enhanced resolution is achieved by using the fast filter (preferably a moving average digital filter) to gather optically integrated rate data and accumulate this data. During the data gathering process, the accumulated data is sampled at a rate set by a frequency modulated ("chirper") phase-locked loop in order to remove undesirable data due to aliasing effects upon the digital filter. In this manner, an enhanced resolution of the gyroscope angular measurement is achieved.
摘要翻译： 本文公开了一种环形激光陀螺仪增强分辨率系统，其在优选实施例中包括与快速滤波器组合使用的采样频率调制锁相环（或“啁啾”）。 通过使用快速滤波器（优选移动平均数字滤波器）来收集光学积分的速率数据并累积该数据来实现增强的分辨率。 在数据采集过程中，以由频率调制（“啁啾”）锁相环设置的速率对累积数据进行采样，以便由于对数字滤波器的混叠效应而消除不期望的数据。 以这种方式，实现陀螺仪角度测量的增强分辨率。
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公开(公告)号：US4981359A
公开(公告)日：1991-01-01
申请号：US367957
申请日：1989-06-19
CPC分类号： G01C19/70
摘要： A dither drive system for a ring laser gyroscope includes a computer, a digital to analog converter, a filter, and a power amplifier. The system senses the dither frequency of the gyro frame and produces a digital signal that corresponds to a specified dither drive signal and toggles the dither drive signal to drive the flexure at its resonant frequency. The dither drive system generates digital waveforms that approximate the sine function and digital waveforms that approximate the cosine function and applies the digital waveforms in quadrature to the flexure.
摘要翻译： 用于环形激光陀螺仪的抖动驱动系统包括计算机，数模转换器，滤波器和功率放大器。 该系统感测陀螺仪帧的抖动频率并产生对应于指定的抖动驱动信号的数字信号，并切换抖动驱动信号以在其谐振频率处驱动挠曲。 抖动驱动系统产生近似正弦函数的数字波形和近似余弦函数的数字波形，并将正交的数字波形应用于挠曲。
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3.发明授权Modulation method for signal crosstalk mitigation in electrostatically driven devices 有权静电驱动装置中信号串扰减轻的调制方法公开(公告)号：US06940433B2
公开(公告)日：2005-09-06
申请号：US10714199
申请日：2003-11-14
申请人： Daniel A. Tazartes , John G. Mark
发明人： Daniel A. Tazartes , John G. Mark
CPC分类号： G01C19/5719
摘要： A method of distinguishing an analog drive signal from a pickoff signal for attenuating the effect of electrical cross-coupling between the analog drive signal and the pickoff signal. The method may include receiving a periodic digital signal at a first frequency in the form of a stream of digital data values, randomly inverting at least one of the digital data values and converting the stream of digital data values to a stream of analog data values to form an analog drive signal. The method may also include driving a sensor, physically coupled to a resonant member configured to oscillate at a second frequency, using the analog drive signal and sensing changes in the movement of the resonant member detected by the sensor for producing a pickoff signal.
摘要翻译： 一种区分模拟驱动信号与传感信号的方法，用于衰减模拟驱动信号和检测信号之间的电交叉耦合的影响。 该方法可以包括以数字数据值流的形式以第一频率接收周期性数字信号，随机地反转数字数据值中的至少一个，并将数字数据流流转换为模拟数据值流到 形成模拟驱动信号。 该方法还可以包括驱动传感器，物理耦合到被配置为以第二频率振荡的谐振构件，使用模拟驱动信号并且感测由传感器检测的谐振构件的运动的变化以产生拾取信号。
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公开(公告)号：US06871561B2
公开(公告)日：2005-03-29
申请号：US10093158
申请日：2002-03-07
摘要： Multiple isolators are configured with respect to an assembly (101), such as a sensor assembly in an inertial navigation system or other system where cross-axis acceleration or rotation coupling is undesirable. The system utilizes a set of isolators (203, 209, 215, and 221; 305, 307, 311, 313, 317, 319, 323, 325; or 403, 405, 407, 411, 413, and 415) that are substantially matched to each other, but may have uncorrelated axial stiffness and radial stiffness. The system configuration does not introduce cross-axis coupling, such as cross-axis translational coupling and cross-axis rotational coupling.
摘要翻译： 多个隔离器相对于组件（101）构造，诸如惯性导航系统中的传感器组件或其中不希望有横轴加速或旋转耦合的其它系统。 该系统利用基本上是一组隔离器（203,209,215和221; 305,307,311,313,317,319,323,345;或403,405,407,411,413和415） 彼此匹配，但可能具有不相关的轴向刚度和径向刚度。 系统配置不引入交叉轴耦合，例如横轴平移耦合和交叉轴旋转耦合。
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公开(公告)号：US06538745B1
公开(公告)日：2003-03-25
申请号：US09499910
申请日：2000-02-08
IPC分类号： G01C1966
CPC分类号： G01C19/667
摘要： The invention is a method and apparatus for processing signals with frequencies fL and fR from a multioscillator ring laser gyro, the method being repeated at regular time intervals. The difference f&Dgr;&thgr;, of fL and fR is a measure of the angular rotation rate of the ring laser gyro and the sum fF of fL and fR divided by 2 is the Faraday bias frequency. The first step of the method comprises determining two or more of the values MLP, MRP, MFP, and M&Dgr;&thgr;P of a set of functions ML(fL), MR(fR), MF(fF), and M&Dgr;&thgr;(f&Dgr;&thgr;). The second step comprises storing two or more processed values MLS, MRS, MFS, and M&Dgr;&thgr;S of the functions ML(fL), MR(fR), MF(fF), and M&Dgr;&thgr;(f&Dgr;&thgr;) if the corresponding values of MLP, MRP, MFP, and M&Dgr;&thgr;P are valid. A processed value is derived from the value for the present time interval and zero or more processed values for prior time intervals. The third step comprises determining f&Dgr;&thgr;P or a function thereof from zero or more valid function values obtained as a result of executing the first step during the current time interval, zero or more processed values obtained as a result of executing the second step during a prior time interval, and zero or more extrapolated values obtained by extrapolating the processed values obtained as a result of executing the second step during a prior time interval to the present time interval.
摘要翻译： 本发明是用于处理来自多振荡器环形激光陀螺仪的频率为fL和fR的信号的方法和装置，该方法以规则的时间间隔重复。 fL和fR的差fDELTAtheta是环形激光陀螺仪的角度旋转速率的度量，fL和fR的和fF除以2是法拉第偏置频率。 该方法的第一步包括确定一组函数ML（fL），MR（fR），MF（fF）和MDELTAta（fDTATA））的值MLP，MRP，MFP和MDELTAthetaP中的两个或多个。 第二步包括如果MLP，MRP等的相应值存储两个或更多个功能ML（fL），MR（fR），MF（fF）和MDELTAtheta（fDELTAtheta）的处理值MLS，MRS，MFS和MDELTATATA， MFP和MDELTAthetaP均有效。 从当前时间间隔的值和先前时间间隔的零个或多个处理值导出处理值。 第三步骤包括从作为在当前时间间隔期间执行第一步骤的结果而获得的零个或多个有效函数值确定fDELTAthetaP或其函数，作为在之前时间执行第二步骤的结果而获得的零个或多个处理值 间隔，以及通过外推作为在先前时间间隔期间执行第二步骤的结果获得的处理值而获得的零个或多个外推值到当前时间间隔。
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6.发明授权Method and apparatus for overcoming cross-coupling in a fiber optic gyroscope employing overmodulation 失效在采用过调制的光纤陀螺仪中克服交叉耦合的方法和装置
公开(公告)号：US5682241A
公开(公告)日：1997-10-28
申请号：US613558
申请日：1996-03-11
申请人： John G. Mark , Daniel A. Tazartes , Amado Cordova
发明人： John G. Mark , Daniel A. Tazartes , Amado Cordova
IPC分类号： G01C19/72
CPC分类号： G01C19/72
摘要： A phase modulator applies sequences of artificial phase shifts in the region of overmodulation between light beams counterpropagating within the sensor coil of a Sagnac interferometer to obtain improved random walk performance. The sequences are composed of phase shifts of .+-.a.pi./2b and .+-.(4b-a).pi./2b where a is an odd integer and b is an integer greater than 1. The waveform for driving the phase modulator is derived from a 2.pi. radian mapping plotted so that adjacent driving signal values differ by a.pi./2b or -(4b-a).pi./2b in a first angular direction and by -a.pi./2b or by (4b-a).pi./2b in the opposite angular direction. Angular transitions about the mapping may be predetermined to generate a deterministic, random, or pseudo-random modulation sequence. In the event that a deterministic sequence is chosen, it is examined for orthogonality properties to assume zero average output bias from crosstalk.
摘要翻译： 相位调制器在Sagnac干涉仪的传感器线圈内的反向传播的光束之间的过调制区域中施加人造相移序列，以获得改进的随机游走性能。 序列由+/- a pi / 2b和+/-（4b-a）pi / 2b的相移组成，其中a是奇整数，b是大于1的整数。用于驱动相位调制器的波形是 衍生自2 pi弧度映射，使得相邻的驱动信号值在第一角度方向上以pi-2b或 - （4b-a）pi / 2b和-a / 2b或由（4b-a）pi / 2b在相反的角度方向。 关于映射的角度转换可以被预先确定以产生确定性，随机或伪随机调制序列。 在选择确定性序列的情况下，检查正交性质以假定来自串扰的零平均输出偏差。
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公开(公告)号：US5422817A
公开(公告)日：1995-06-06
申请号：US744178
申请日：1991-08-13
申请人： Daniel A. Tazartes , John G. Mark
发明人： Daniel A. Tazartes , John G. Mark
CPC分类号： G01C21/16
摘要： Sculling error correction means, using third or higher order correction to correct for sculling errors in apparatus for converting angle measuring and acceleration measuring signals from a vehicle set of coordinates into a stabilized set of navigation coordinates.
摘要翻译： 拼接误差校正装置，使用第三或更高阶校正来校正用于将角度测量和加速度测量信号从车辆坐标系转换成稳定的导航坐标系的装置中的冲切误差。
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公开(公告)号：US06307631B1
公开(公告)日：2001-10-23
申请号：US09607471
申请日：2000-06-30
IPC分类号： G01C1972
CPC分类号： G01C19/72
摘要： The invention is a method and apparatus for generating a primary pseudorandom bit sequence consisting of a plurality of contiguous P subsequences. Each P subsequence consists of a start sequence of predetermined length followed by a sequence of trailing bits. The method comprises three steps. The first step consists of deriving a feedback bit from each generating sequence in a P subsequence in accordance with a specified rule where a generating sequence is any sequence of contiguous bits in the P subsequence having the same length as the start sequence. The bit that follows a generating sequence is called the trailing bit for that generating sequence. The second step of the method consists of determining a sequence of one or more modifier bits to be used in modifying the P subsequence. The third step of the method consists of modifying the P subsequence utilizing the one or more modifier bits.
摘要翻译： 本发明是一种生成由多个邻接P子序列组成的主伪随机位序列的方法和装置。 每个P子序列包括预定长度的开始序列，随后是后续位序列。 该方法包括三个步骤。 第一步包括根据指定规则从P子序列中的每个生成序列导出反馈比特，其中生成序列是具有与起始序列相同长度的P子序列中的连续比特的任何序列。 跟随生成序列的位称为该生成序列的尾随位。 该方法的第二步是确定用于修改P子序列的一个或多个修饰符比特的序列。 该方法的第三步包括利用一个或多个修饰词比特来修改P子序列。
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公开(公告)号：US06285954B1
公开(公告)日：2001-09-04
申请号：US09358630
申请日：1999-07-21
申请人： John G. Mark , Daniel A. Tazartes
发明人： John G. Mark , Daniel A. Tazartes
IPC分类号： G05D100
CPC分类号： G05D1/0825
摘要： The invention is a method and apparatus for obtaining an accurate value x1c of a variable x1 based on an estimate x1e that is a function of K variables x1, x2, . . . , xk, . . . , xK. The method comprises the steps of (a) obtaining a plurality of estimates x1e, x2e, . . . , xke, . . . , xKe of the variables x1, x2, . . . , xk, . . . , xK over a method-execution time period, the values of the variables x1, x2, . . . , xk, . . . , xK changing or being changed during the method-execution time period; (b) obtaining from an external source the actual values x1a of x1 during the method-execution time period; (c) defining a compensation model &dgr;x1 that is a function of one or more of the estimates x1e, x2e, . . . , xke, . . . xKe of the variables x1, x2, . . . , xk, . . . , xK, the compensation model being further defined by I unknown constants a1, a2, . . . , ai, . . . , aI; (d) applying an operator G to the values of x1e−x1a and &dgr;x1; (e) determining the values of a1, a2, . . . , ai, . . . , aI; and (f) determining the value of x1c.
摘要翻译： 本发明是一种基于作为K个变量x1，x2的函数的估计值x1e获得变量x1的精确值x1c的方法和装置。 。 。 ，xk，。 。 。 ，xK。 该方法包括以下步骤：（a）获得多个估计值x1e，x2e，...。 。 。 ，xke，。 。 。 ，xKe的变量x1，x2，...。 。 。 ，xk，。 。 。 ，xK在方法执行时间段内，变量x1，x2，...的值。 。 。 ，xk，。 。 。 ，xK在方法执行时间段内改变或改变; （b）从外部来源获得方法执行期间x1的实际值x1a; （c）定义作为估计值x1e，x2e，...中的一个或多个的函数的补偿模型deltax1。 。 。 ，xke，。 。 。 xKe的变量x1，x2，...。 。 。 ，xk，。 。 。 ，xK，补偿模型由I未知常数a1，a2，...进一步定义。 。 。 ，ai，。 。 。 ，aI; （d）将运算符G应用于x1e-x1a和deltax1的值; （e）确定a1，a2，...的值。 。 。 ，ai，。 。 。 ，aI; 和（f）确定x1c的值。
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公开(公告)号：US6130755A
公开(公告)日：2000-10-10
申请号：US255377
申请日：1999-02-22
CPC分类号： G01C19/72
摘要： The invention is a method and apparatus for determining the rotation of a medium through which a light beam propagates by modulating the light beam with a pseudorandom sequence of bits. The method comprises the steps of (1) selecting a "0" or a "1" as the next bit of the modified pseudorandom bit sequence if one or more criteria are satisfied, the criteria being based on the measured properties of a plurality of prior bits of the modified pseudorandom bit sequence; otherwise: (2) selecting the next bit of an initial pseudorandom bit sequence as the next bit of the modified pseudorandom bit sequence, the next bit of the initial pseudorandom bit sequence being a function of one or more prior bits of the initial pseudorandom bit sequence.
摘要翻译： 本发明是用于通过用伪随机序列比特调制光束来确定光束通过其传播的介质的旋转的方法和装置。 该方法包括以下步骤：（1）如果满足一个或多个标准，则选择“0”或“1”作为修改的伪随机比特序列的下一个比特，该标准基于多个先前的测量属性 修改的伪随机比特序列的比特; （2）选择初始伪随机比特序列的下一比特作为修改伪随机比特序列的下一比特，初始伪随机比特序列的下一比特是初始伪随机比特序列的一个或多个先前比特的函数 。
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