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公开(公告)号：US20050229797A1
公开(公告)日：2005-10-20
申请号：US11095024
申请日：2005-03-31
申请人： Carrie Thomas , Catherine Wynkoop , Kevin Townsend
发明人： Carrie Thomas , Catherine Wynkoop , Kevin Townsend
摘要： A method of making screen printing frames can include, in certain illustrative embodiments, affixing at least two frames to one another, applying a masking film to both frames, exposing the frames, removing the unhardened emulsion in the meshes, and separating the frames from one another for deployment in a screen printing apparatus. This exemplary process can be used to create images in substantially complete registration with one another on frames having different mesh counts. Stated another way, these embodiments permit the use of multiple frames to print different inks through different meshes in a single pass to form images in substantially complete registration with one another. In certain preferred embodiments, a screen printing apparatus can include two frames, each having a mesh with a different pitch, wherein the frames are adapted to receive different inks and held in fixed register during a screen printing operation.
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公开(公告)号：US06276204B1
公开(公告)日：2001-08-21
申请号：US09396443
申请日：1999-09-15
申请人： Kevin Townsend
发明人： Kevin Townsend
IPC分类号： G01P904
CPC分类号： G01C19/56
摘要： A digital control system for a vibrating structure gyroscope having a vibrating structure (3), at least a primary drive (4) for putting and maintaining the vibrating structure (3) in vibratory resonance, and at least a primary pickoff (2) for detecting vibration of the vibrating structure (3), includes a digital processing unit (22) for receiving output signals from the pickoff (2) for processing the received signals and for passing them to the primary drive (4) via digital to analogue converters (20). The system includes sampling at selected intervals of time the output signals before passage to the digital processing unit (22) and a variable frequency oscillator (23) connected to and under the control of the digital processing unit (22) for controlling the sampling intervals.
摘要翻译： 一种用于具有振动结构（3）的振动结构陀螺仪的数字控制系统，至少一个用于放置和保持振动结构（3）进行振动共振的初级驱动器（4）和至少一个用于检测的振动结构（3）的主传感器 振动结构（3）的振动包括数字处理单元（22），用于接收来自传感器（2）的输出信号，用于处理接收的信号，并经由数模转换器（20）将其传送到主驱动器 ）。 系统包括在经过数字处理单元（22）之前的输入信号的选定时间间隔和连接到数字处理单元（22）的控制下的可变频率振荡器（23），用于控制采样间隔。
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公开(公告)号：US20130081463A1
公开(公告)日：2013-04-04
申请号：US13580616
申请日：2011-03-03
IPC分类号： G01P3/14
CPC分类号： G01P3/14 , G01C19/5684
摘要： An inertial sensor is described that has a commanded test function. The sensor is of a ring type driven by a driver circuit, the sensor further comprising primary and secondary portions having corresponding signal pickoffs. The primary pickoff signal amplitude is controlled via an automatic gain control, the primary phase lock loop and VCO locks to the resonant frequency to provide the clocks for the synchronous detectors, the primary pickoff signals via the primary phase shift circuit is provided to the primary driver, the secondary pickoff signal being input into a detector circuit capable of detecting motion in the sensor. The commanded test function comprises signal derived from the primary portion of the circuit and input into the two inputs of a differential amplifier in the secondary pickoff detector circuit.
摘要翻译： 描述了具有指令测试功能的惯性传感器。 传感器是由驱动器电路驱动的环形型，该传感器还包括具有对应的信号检测的主要和次要部分。 通过自动增益控制来控制主要的检测信号幅度，主锁相环和VCO锁定到谐振频率以提供同步检波器的时钟，通过主相移电路的初级检测信号被提供给主驱动器 ，次级检测信号被输入到能够检测传感器中的运动的检测器电路。 命令测试功能包括从电路的主要部分导出的信号并输入到次级检测电路中的差分放大器的两个输入端。
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公开(公告)号：US07117787B2
公开(公告)日：2006-10-10
申请号：US11095024
申请日：2005-03-31
IPC分类号： B41C1/14
摘要： A method of making screen printing frames can include, in certain illustrative embodiments, affixing at least two frames to one another, applying a masking film to both frames, exposing the frames, removing the unhardened emulsion in the meshes, and separating the frames from one another for deployment in a screen printing apparatus. This exemplary process can be used to create images in substantially complete registration with one another on frames having different mesh counts. Stated another way, these embodiments permit the use of multiple frames to print different inks through different meshes in a single pass to form images in substantially complete registration with one another. In certain preferred embodiments, a screen printing apparatus can include two frames, each having a mesh with a different pitch, wherein the frames are adapted to receive different inks and held in fixed register during a screen printing operation.
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公开(公告)号：US06698271B1
公开(公告)日：2004-03-02
申请号：US09450688
申请日：1999-11-30
IPC分类号： G01P904
CPC分类号： G01C19/567
摘要： Bias error is reduced in a vibrating structure sensor having primary and secondary pick-offs separated by a fixed angular amount (45°) with respect to the vibrating structure by summing a proportion of the primary pick-off output signal into the secondary pick-off output signal or subtracting a proportion of the primary pick-off output signal from the secondary pick-off output signal effectively to reduce or increase the angular separation of the secondary pick-off from the primary driver by an amount sufficient to set the rate output signal from the vibrating structure to zero and thereby minimize bias error.
摘要翻译： 一次振动结构传感器中的偏置误差减小，该振动结构传感器具有相对于振动结构以相对于振动结构分离的固定角度量（45°）的主要和次级拾取器，通过将初级传感器输出信号的比例相加到次级传感器 输出信号或从辅助拾取输出信号中减去主要拾取输出信号的比例，以有效地减少或增加辅助传感器与主要驱动器的角度间隔，其量足以设定速率输出信号 从振动结构到零，从而最小化偏差误差。
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16.发明授权公开(公告)号：US06191521B1
公开(公告)日：2001-02-20
申请号：US09417304
申请日：1999-10-13
IPC分类号： H01L310367
CPC分类号： G01C19/5684 , Y10T74/1257
摘要： A vibration damper assembly for a ring resonator of a vibrating structure gyroscope has a female portion attachable to a body of the gyroscope so as to have limited resiliency with respect to the body in a direction substantially perpendicular to the body. A male portion is fixedly attachable at one end to a resonator of the gyroscope, projectable into the female portion and fixedly attachable at its other end in and to the female portion. The assembly permits damping of vibratory movement of the resonator in a direction substantially perpendicular thereto whilst retaining stiffness and freedom to vibrate for the resonator in the plane thereof.
摘要翻译： 用于振动结构陀螺仪的环形谐振器的振动阻尼器组件具有可附接到陀螺仪主体的阴部分，以便在基本上垂直于身体的方向上相对于身体具有有限的弹性。 一个阳部分固定在陀螺仪的一个共振器上，可伸入阴部分，并在其另一端可固定地连接到阴部。 该组件允许谐振器在基本上垂直于其的方向上的振动运动的阻尼，同时保持谐振器在其平面中的刚度和自由度振动。
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公开(公告)号：US08347718B2
公开(公告)日：2013-01-08
申请号：US12678704
申请日：2008-09-08
IPC分类号： G01C19/56
CPC分类号： G01C19/5677
摘要： An angular velocity sensor or gyroscope has a ring and a primary drive transducer arranged to cause the ring to oscillate in a primary mode substantially at the resonant frequency of the primary mode of the ring. A primary control loop receives primary pick-off signals from the primary pick-off transducer and provides primary drive signals to the primary drive transducer so as to maintain resonant oscillation of the ring. The primary control loop includes a demodulator arranged to determine the amplitude of the fundamental frequency of the primary pick-off signals and a demodulator arranged to determine the amplitude of the second harmonic frequency of the primary pick-off signals and a drive signal generator arranged to produce the primary drive signals with an amplitude that is dependent on a ratio of the amplitude of the second harmonic frequency of the primary pick-off signal over the amplitude of the fundamental frequency of the primary pick-off signal as derived by a divider.
摘要翻译： 角速度传感器或陀螺仪具有环和主驱动换能器，其布置成使环以基本上处于环的主模式的共振频率的初级模式振荡。 主控制回路从初级传感器接收初级检测信号，并向主驱动传感器提供初级驱动信号，以保持环的谐振振荡。 主控制回路包括解调器，其被布置为确定主要拾取信号的基频的振幅;以及解调器，被布置成确定主要拾取信号的二次谐波频率的幅度;以及驱动信号发生器， 产生主驱动信号，其幅度取决于初级拾取信号的二次谐波频率的幅度与由分频器导出的初级拾取信号的基频的振幅的比值。
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公开(公告)号：US20070220972A1
公开(公告)日：2007-09-27
申请号：US11571974
申请日：2005-07-12
申请人： Ryuta Araki , Osamu Torayashiki , Toru Kitamura , Hiroshi Kawasaki , Tsuyoshi Takemoto , Koji Nakamura , Christopher Fell , Kevin Townsend , Ian Sturland
发明人： Ryuta Araki , Osamu Torayashiki , Toru Kitamura , Hiroshi Kawasaki , Tsuyoshi Takemoto , Koji Nakamura , Christopher Fell , Kevin Townsend , Ian Sturland
IPC分类号： G01P3/44
CPC分类号： G01C19/5684
摘要： A vibrator 10, which is formed in a silicon wafer 1 by means of MEMS technique, has eight beam portions (beams) 12 supported at a central portion 11 and extending in the radial direction while mutually keeping the same angle and has a ring portion 13 connected to the eight beam portions 12. Outside the ring portion 13, eight electrodes 21a to 21h for electrostatic actuation, capacitance detection, or the like are spaced uniformly with a gap 22 created between the ring portion 13 and the electrodes 21a to 21h. Inside the ring portion 13, sixteen electrodes 23 for frequency adjustment are spaced uniformly with a gap 24 created between the ring portion 13 and the electrodes 23.
摘要翻译： 通过MEMS技术形成在硅晶片1中的振动器10具有支撑在中心部分11处并在径向方向上延伸并且相互保持相同角度的八个梁部分（梁）12，并且具有环形部分13 连接到八个光束部分12。 在环形部分13的外部，用于静电驱动，电容检测等的八个电极21a至21h与在环部13和电极21a至21h之间产生的间隙22均匀地间隔开。 在环部13内部，用于频率调节的十六个电极23与在环部13和电极23之间形成的间隙24均匀地间隔开。
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公开(公告)号：US06910414B2
公开(公告)日：2005-06-28
申请号：US10278056
申请日：2002-10-22
摘要： A method of making screen printing frames can include, in certain illustrative embodiments, affixing at least two frames to one another, applying a masking film to both frames, exposing the frames, removing the unhardened emulsion in the meshes, and separating the frames from one another for deployment in a screen printing apparatus. This exemplary process can be used to create images in substantially complete registration with one another on frames having different mesh counts. Stated another way, these embodiments permit the use of multiple frames to print different inks through different meshes in a single pass to form images in substantially complete registration with one another. In certain preferred embodiments, a screen printing apparatus can include two frames, each having a mesh with a different pitch, wherein the frames are adapted to receive different inks and held in fixed register during a screen printing operation.
摘要翻译： 制造丝网印刷框架的方法可以包括在某些说明性实施例中，将至少两个框架相互贴合，将掩模膜施加到两个框架上，曝光框架，去除网格中的未硬化的乳液，以及将框架与一个框架分开 另一个用于部署在丝网印刷设备中。 该示例性过程可以用于在具有不同网格计数的帧上彼此基本上完全对准地创建图像。 换句话说，这些实施例允许使用多个帧通过单次通过中的不同网格打印不同的墨水，以形成基本完全对准的图像。 在某些优选实施例中，丝网印刷设备可以包括两个框架，每个框架具有不同间距的网格，其中框架适于在丝网印刷操作期间接收不同的墨水并保持在固定的寄存器中。
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公开(公告)号：US5932804A
公开(公告)日：1999-08-03
申请号：US21306
申请日：1998-02-10
IPC分类号： G01C19/5677 , G01P9/04
CPC分类号： G01C19/5677
摘要： A vibrating structure gyroscope has a vibratory resonator having a substantially ring or hoop-like shape structure, an electromagnetic drive for causing the resonator to vibrate, a support structure including a plurality of flexible support beams for supporting the resonator whilst allowing it to vibrate and an electromagnetic sensor for sensing movement of the resonator. The support beams and resonator are made from silicon and the electromagnetic drive and sensor include metal tracks which extend externally along each support beam onto and along respective segments of an outer substantially planar surface of the ring-like resonator. The resonator is substantially planar and means is produced a magnetic field substantially perpendicular to the plane of the resonator.
摘要翻译： 振动结构陀螺仪具有振动谐振器，其具有基本环形或环形形状结构，用于使谐振器振动的电磁驱动器，包括多个柔性支撑梁的支撑结构，用于支撑谐振器同时允许谐振器振动， 用于感测谐振器的移动的电磁传感器。 支撑梁和谐振器由硅制成，并且电磁驱动和传感器包括金属轨道，其沿着每个支撑梁向外延伸到环形谐振器的外部基本上平坦的表面的相应段上。 谐振器基本上是平面的，并且装置产生基本上垂直于谐振器的平面的磁场。
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