公开(公告)号：US5896199A

公开(公告)日：1999-04-20

申请号：US880129

申请日：1997-06-20

申请人： John G. Mark ,  Daniel A. Tazartes ,  Amado Cordova ,  Agop H. Cherbettchian ,  Eric L. Goldner

发明人： John G. Mark ,  Daniel A. Tazartes ,  Amado Cordova ,  Agop H. Cherbettchian ,  Eric L. Goldner

IPC分类号： G01C19/72

CPC分类号： G01C19/722

摘要： A gyroscope assembly (10) includes a ring-shaped fiber optic coil (14) and a coil conforming enclosure (12, 16) of high magnetic permeability ferromagnetic material. The enclosure is ring-shaped to conform with the shape of the coil, and includes a portion (22) extending within the internal hole of the coil ring. Therefore, the coil is intimately and fully encased within high magnetic permeability material. In particular, the enclosure comprises a coil supporting spool (12) and a cover (16) secured to the spool. The spool includes a base (18) which is provided with a central hole (20) and a tubular wall (22) extending perpendicularly from the base. Coil (14) is bonded to base (18). Both the spool and the cover are formed of high magnetic permeability material, and the cover is placed about the fiber optic coil and attached to the spool. The coefficient of thermal expansion material used for the spool is matched to that of the coil pack to minimize stress imposed upon the fiber. An outer shield (28), roughly cylindrical in shape, may be further attached to the outside of the inner, toroidal shield, and the two shields are separated by a layer of low magnetic permeability material, such as of low magnetic permeability stainless steel or aluminum.

摘要翻译： 陀螺仪组件（10）包括环形光纤线圈（14）和高磁导率铁磁材料的线圈合格外壳（12,16）。 外壳是环形的以符合线圈的形状，并且包括在线圈环的内部孔内延伸的部分（22）。 因此，线圈密封并完全封装在高磁导率材料内。 特别地，外壳包括线圈支撑线轴（12）和固定到线轴的盖（16）。 阀芯包括设置有中心孔（20）的底座（18）和从基座垂直延伸的管状壁（22）。 线圈（14）结合到基座（18）上。 卷轴和盖都由高磁导率材料形成，并且盖围绕光纤线圈放置并连接到卷轴。 用于卷轴的热膨胀材料系数与线圈组的热膨胀系数相匹配，以使施加在纤维上的应力最小化。 大致圆筒形的外屏蔽件（28）可以进一步附接到内环形屏蔽体的外部，并且两个屏蔽件被低磁导率材料层（例如低磁导率不锈钢）分开，或 铝。

公开(公告)号：US5822065A

公开(公告)日：1998-10-13

申请号：US873349

申请日：1997-06-11

申请人： John G. Mark ,  Daniel A. Tazartes ,  Amado Cordova ,  Agop H. Cherbettchian

发明人： John G. Mark ,  Daniel A. Tazartes ,  Amado Cordova ,  Agop H. Cherbettchian

IPC分类号： G01C19/72

CPC分类号： G01C19/722

摘要： A gyroscope component (10) and its variations (10a, 10b and 10c) includes a spool (12, 12a) which supports a ring-shaped fiber optic gyroscope coil (14). The spool has a base (26, 26a) which is provided with a central hole (38, 38a). A perpendicularly extending tubular wall (28, 28a) extends from the base or a cover (16, 16a), and may directly contact the coil or be separated therefrom by a non-adhesive material (29) or a space (30). The cover covers the spools and, with the spool and the tubular wall, forms a ring-shaped enclosure. Each coil has a generally trapezoidal shape and comprises an optical fiber winding wound about an axis and having a cross-sectional configuration that approximates a 45.degree. right triangle whose hypotenuse is formed by the sloped sides to provide a side which is sloped with respect to its axis. Three components (10, 10", 10"') are positioned respectively about three orthogonally disposed axes to form an assembly (50) and are supported within and enclosed by a housing (52). The arrangement of the enclosures positions the coils such that their sloped hypotenuse sides face one another. The spool (12, 12a), the cover (16, 16a), the tubular wall (28, 28a) and the housing (52) are formed of a ferromagnetic material having high relative (.mu./.mu.0) permeability.

摘要翻译： 陀螺仪部件（10）及其变型（10a，10b和10c）包括支撑环形光纤陀螺仪线圈（14）的线轴（12,12a）。 卷轴具有设置有中心孔（38,38a）的基部（26,26a）。 垂直延伸的管状壁（28,28a）从基座或盖（16,16a）延伸，并且可以直接接触线圈或者通过非粘合材料（29）或空间（30）与线圈分离。 盖子覆盖线轴，并且与线轴和管状壁形成环形外壳。 每个线圈具有大致梯形形状，并且包括围绕轴线缠绕的光纤绕组，并且具有接近45°直角三角形的横截面构造，其斜边由斜边形成，以提供相对于其倾斜的侧面 轴。 分别围绕三个正交设置的轴定位三个部件（10,10“，10”），以形成组件（50）并且被支撑在壳体（52）内并由壳体（52）包围。 外壳的布置将线圈定位成使得它们的倾斜斜边彼此面对。 卷轴（12,12a），盖（16,16a），管状壁（28,28a）和壳体（52）由具有高相对（mu / mu 0）渗透性的铁磁材料形成。

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。

公开(公告)号：US6040908A

公开(公告)日：2000-03-21

申请号：US123626

申请日：1998-07-28

申请人： John P. Rahn ,  Ralph A. Patterson ,  Amado Cordova

发明人： John P. Rahn ,  Ralph A. Patterson ,  Amado Cordova

IPC分类号： G01C19/72 ,  G02B6/44

CPC分类号： G01C19/722 ,  G02B6/4458

摘要： A method and apparatus for reducing the temperature-dependent Shupe bias of a potted gyro sensor coil pack to near-zero is provided by selectively adjusting the manner in which CCW and CW fiber leads are attached to the coil pack or the coil mount. The invention recognizes the inevitable existence of a strain differential between the CW and CCW-wound portions of a symmetrically-wound fiber coil. Leads affixed to the ends of the CW and CCW-wound halves of the coil are selectively bonded in accordance with principles for creating a counteracting temperature-dependent stress differential whereby temperature-dependent Shupe bias is substantially eliminated from the gyro output.

摘要翻译： 通过选择性地调节CCW和CW光纤引线附接到线圈组或线圈架上的方式，提供了将盆栽陀螺传感器线圈组的温度依赖性Shupe偏压降低到接近零的方法和装置。 本发明认识到对称卷绕的纤维线圈的CW和CCW卷绕部分之间的应变差的不可避免的存在。 根据用于产生抵消温度依赖性应力差的原理，固定到线圈的CW和CCW卷绕半部的端部的引线被选择性地接合，由此基本上从陀螺仪输出消除了温度依赖性的Shupe偏置。

公开(公告)号：US5847829A

公开(公告)日：1998-12-08

申请号：US841491

申请日：1997-04-23

申请人： Amado Cordova

发明人： Amado Cordova

IPC分类号： G01C19/72 ,  G01C19/64

CPC分类号： G01C19/722

摘要： A method for providing an optical fiber coil having reduced bias vibration and bias temperature-ramp sensitivity by controlling and adjusting coil geometrical factors including the coil potted length, the adhesive layer thickness, the number of turns per layer, the number of layers and the way the winding is terminated. The windings may be terminated to form the coil as a complete quadrupole, a diapole, an incomplete quadrupole or an incomplete diapole. By adjusting geometrical factors of the coil design, a coil for which the residual net Shupe bias is negligible is obtained.

摘要翻译： 一种用于通过控制和调节包括线圈封套长度，粘合剂层厚度，每层匝数，层数和方式的线圈几何因素来提供具有减小的偏置振动和偏置温度 - 斜坡灵敏度的光纤线圈的方法 绕组终止。 绕组可以被终止以形成线圈作为完整的四极杆，二极杆，不完全四极杆或不完全的二极。 通过调整线圈设计的几何因素，获得剩余净Shupe偏差可忽略的线圈。

公开(公告)号：US5742390A

公开(公告)日：1998-04-21

申请号：US751984

申请日：1996-11-19

申请人： Amado Cordova ,  Robert J. Hoover ,  Thomas McLean ,  Ralph A. Patterson ,  John P. Rahn

发明人： Amado Cordova ,  Robert J. Hoover ,  Thomas McLean ,  Ralph A. Patterson ,  John P. Rahn

IPC分类号： G01C19/72 ,  G02B6/44 ,  G01C19/64

CPC分类号： G01C19/722 ,  G02B6/4457

摘要： A potted sensor coil for a fiber optic gyroscope includes an inter-layer stress relief layer of lubricating material. The coil is wound into a known pattern. Various coil configurations can be realized in which a coating layer of lubricant relieves stressing at the interface between the outer jacket of the fiber and the coil potting material.

摘要翻译： 用于光纤陀螺仪的盆式传感器线圈包括润滑材料的层间应力消除层。 线圈缠绕成已知的图案。 可以实现各种线圈构造，其中润滑剂涂层在纤维的外护套和线圈灌封材料之间的界面处减轻应力。

公开(公告)号：US5486922A

公开(公告)日：1996-01-23

申请号：US359424

申请日：1994-12-20

申请人： Amado Cordova

发明人： Amado Cordova

IPC分类号： G01C19/72 ,  G01C19/64

CPC分类号： G01C19/722

摘要： A spool for receiving a fiber optic sensor coil is selectively fabricated of materials of different coefficients of thermal expansion to thereby mimic the anisotropic thermal expansion characteristics of a potted sensor coil. The spool can include one or a pair of planar flanges fixed to the end(s) of a central cylindrical hub. The hub is preferentially fabricated in part of a polymer while the flange(s) is of low coefficient of expansion material such as titanium to thereby approximate the differential thermal expansions of a potted sensor coil in the axial and radial directions, respectively.

摘要翻译： 用于接收光纤传感器线圈的线轴由具有不同热膨胀系数的材料选择性地制造，从而模拟一个盆式传感器线圈的各向异性热膨胀特性。 阀芯可以包括固定到中心圆柱形毂的端部的一个或一对平面凸缘。 轮毂优选地制造在聚合物的一部分中，而凸缘具有低膨胀系数的材料，例如钛，从而分别近似于盆式传感器线圈在轴向和径向方向上的差热膨胀。

公开(公告)号：US06654514B2

公开(公告)日：2003-11-25

申请号：US09968463

申请日：2001-10-01

申请人： Ronald J. Michal ,  Amado Cordova

发明人： Ronald J. Michal ,  Amado Cordova

IPC分类号： G02B628

CPC分类号： G02B6/4246 ,  G02B6/264 ,  G02B6/2706 ,  G02B6/29352 ,  G02B6/29395

摘要： An optical fiber interleaver and method for aligning the output channels to a set of nominal values in frequency space. The interleaver is formed of two optical fibers joined together at fused input and output couplers to define an input section, an interferometer section and an output section. Within the interferometer section, an element is arranged to vary the optical path length of at least one of the fibers in response to a feedback signal. The feedback signal is generated by examination of the intensity of a monitor signal at the output section that was applied at the input section.

摘要翻译： 一种用于将输出通道与频率空间中的一组标称值对准的光纤交织器和方法。 交织器由融合的输入和输出耦合器连接在一起的两根光纤形成，以限定输入部分，干涉仪部分和输出部分。 在干涉仪部分内，响应于反馈信号，元件布置成改变至少一根光纤的光路长度。 通过检查在输入部分处施加的输出部分处的监视信号的强度来生成反馈信号。

公开(公告)号：US06486960B2

公开(公告)日：2002-11-26

申请号：US09795813

申请日：2001-02-27

申请人： Amado Cordova ,  Thomas McLean ,  Thomas Meloeny

发明人： Amado Cordova ,  Thomas McLean ,  Thomas Meloeny

IPC分类号： G01B902

CPC分类号： G01C19/722

摘要： A tool for forming a sensor coil that may be employed, for example, in a fiber optic gyroscope with reduced Shupe effect-induced bias. The tool includes a takeup reel having a cylindrical mandrel with inner flanges fixed to its opposed ends sandwiched between two outer flanges. Each of the inner flanges includes a pair of radially-directed apertures that form a radially-directed wedge therebetween. A recess in the planar portion of each of the outer flanges that contacts an inner flange is aligned with the apertures. This permits the winding of the sensor coil to form climbing turns at the ends of wound layers that lie outside an encapsulated fiber pack. Such turns, which join layers with overlying layers, avoid crossovers and the resultant stress that contributes significantly to Shupe effect-induced bias. A sensor coil having reduced internal stress is thus also provided.

摘要翻译： 用于形成传感器线圈的工具，其可以例如在具有减小的Shupe效应引起的偏压的光纤陀螺仪中使用。 该工具包括具有圆柱形心轴的卷取卷轴，其具有固定在夹在两个外凸缘之间的相对端部的内凸缘。 每个内凸缘都包括一对在其间形成径向楔形的径向定向的孔。 每个外凸缘的与内凸缘接触的平面部分中的凹部与孔对准。 这允许传感器线圈的卷绕在位于封装的纤维包之外的卷绕层的端部处形成攀登匝。 这样的匝连接层与上层，避免交叉和所产生的应力，显着影响Shupe效应诱导偏倚。 因此也提供了具有减小的内部应力的传感器线圈。

公开(公告)号：US6054068A

公开(公告)日：2000-04-25

申请号：US124803

申请日：1998-07-29

申请人： Kurt Randy Carlson ,  Amado Cordova ,  John P. Rahn

发明人： Kurt Randy Carlson ,  Amado Cordova ,  John P. Rahn

IPC分类号： G01C19/72 ,  G02B6/44 ,  B29D11/00

CPC分类号： G01C19/722 ,  G02B6/4457

摘要： A potting compound for use in the fabrication of fiber optic gyro sensor coils utilizes a silver-filled silicone base to reduce gyro sensitivity to changes in heat rate and thereby improve gyro performance during warm-up and periods of thermal cycling.