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公开(公告)号：US09234907B2
公开(公告)日：2016-01-12
申请号：US13698342
申请日：2011-05-19
IPC分类号： G01P3/44 , G01C19/567 , G01C19/5628 , G01C19/5733
CPC分类号： G01P3/44 , G01C19/567 , G01C19/5677
摘要： An angular velocity sensor is described with improved ageing and hysteresis properties. The sensor may be of a ring type driven by a driver circuit, the sensor further comprising primary and secondary portions having corresponding signal pickoffs. The gain of the primary pickoff signal and the capacitance of the primary portions of the sensor are controlled relative to the gain of the secondary pickoff and the capacitance of the secondary portions of the sensor. Control electronics is provided that enables matching of the relative signals from the respective channels. In this way, temperature hysteresis and ageing effects of materials used in forming the sensor are overcome.
摘要翻译： 描述了具有改进的老化和滞后特性的角速度传感器。 传感器可以是由驱动器电路驱动的环形，传感器还包括具有对应的信号检测的主要和次要部分。 主传感器的主要部分的增益和传感器的主要部分的电容相对于传感器的次级传感器的增益和传感器次级部分的电容进行控制。 提供控制电子装置，其能够匹配来自相应通道的相对信号。 以这种方式克服了用于形成传感器的材料的温度滞后和老化效应。
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公开(公告)号：US09176158B2
公开(公告)日：2015-11-03
申请号：US13580616
申请日：2011-03-03
IPC分类号： G01C19/56 , G01P3/14 , G01C19/5684
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 includes 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 includes a 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。 该传感器是由驱动电路驱动的环型，该传感器还包括具有相应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并输入到次级检测电路中的差分放大器的两个输入的信号。
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公开(公告)号：US20130233074A1
公开(公告)日：2013-09-12
申请号：US13698342
申请日：2011-05-19
IPC分类号： G01P3/44
CPC分类号： G01P3/44 , G01C19/567 , G01C19/5677
摘要： An angular velocity sensor is described with improved ageing and hysteresis properties. The sensor may be of a ring type driven by a driver circuit, the sensor further comprising primary and secondary portions having corresponding signal pickoffs. The gain of the primary pickoff signal and the capacitance of the primary portions of the sensor are controlled relative to the gain of the secondary pickoff and the capacitance of the secondary portions of the sensor. Control electronics is provided that enables matching of the relative signals from the respective channels. In this way, temperature hysteresis and ageing effects of materials used in forming the sensor are overcome.
摘要翻译： 描述了具有改进的老化和滞后特性的角速度传感器。 传感器可以是由驱动器电路驱动的环形，传感器还包括具有对应的信号检测的主要和次要部分。 主传感器的主要部分的增益和传感器的主要部分的电容相对于传感器的次级传感器的增益和传感器次级部分的电容进行控制。 提供控制电子装置，其能够匹配来自相应通道的相对信号。 以这种方式克服了用于形成传感器的材料的温度滞后和老化效应。
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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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5.发明授权Vibratory sensor operating as a rate gyro about two axes and as a rate integrating gyro about the third one 失效振动传感器作为绕两轴的速率陀螺仪运行，作为速率积分陀螺仪约三分之一公开(公告)号：US06805007B2
公开(公告)日：2004-10-19
申请号：US10181765
申请日：2002-07-23
申请人： Christopher P Fell , Kevin Townsend
发明人： Christopher P Fell , Kevin Townsend
IPC分类号： G01C1900
CPC分类号： G01C19/5677 , G01C19/5691
摘要： A vibrating structure gyroscope comprises a resonant body, a drive transducer for driving resonant motion of the body, a pick-off for producing signals representative of the resonant motion, and a signal processor for extracting z-axis orientation information and x- and y-axis rate information from the signals. The resonant body is planar and the resonant motion takes place in a vibration mode pattern whose orientation angle with respect to the body varies in accordance with z-axis orientation of the body and couples energy into an out-of-plane response mode motion in accordance with rotation of the body about the x- or y-axis. The signal processor resolves the out-of-plane response mode motion with reference to a z-axis orientation signal to extract the x- and y-axis rate information.
摘要翻译： 振动结构陀螺仪包括谐振体，用于驱动身体的共振运动的驱动换能器，用于产生表示谐振运动的信号的拾取器，以及用于提取z轴取向信息和x轴和y轴的信号处理器， 来自信号的轴速率信息。 谐振体是平面的，并且谐振运动发生在振动模式图案中，其相对于身体的取向角根据身体的z轴取向而变化，并且将能量依次转换成平面外的响应模式运动 使身体绕x轴或y轴旋转。 信号处理器参照z轴取向信号来解决平面外的响应模式运动，以提取x轴和y轴速率信息。
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公开(公告)号：US06282958B1
公开(公告)日：2001-09-04
申请号：US09417105
申请日：1999-10-13
申请人： Christopher P Fell , Kevin Townsend , Ian D Hopkin
发明人： Christopher P Fell , Kevin Townsend , Ian D Hopkin
IPC分类号： G01P904
CPC分类号： G01C19/5684
摘要： An angular rate sensor or gyro includes a ring-like resonator (1) mounted by support beams (2) extending from the inner periphery of the ring (1) to a boss (4) on a base (3). The support beams (2) are flexible and allow the resonator (1) to vibrate in response to an electrostatic drive (6, 8) in a substantially undamped oscillation mode to permit the resonator to move relative to the support in response to turning rate. The support beams (2) and resonator (1) are made from crystalline silicon. Electrostatic sensors (7, 9) are provided for sensing movement of the resonator (1). The drive (6, 8) and sensors (7, 9) have plate-like elements made from crystalline silicon having surfaces located substantially normal to the plane of the resonator (1) at a spacing from the adjacent outer periphery of the resonator (1). The ratio of the thickness of the resonator (1) at the outer periphery (1b) to the width of the spacing (11) between the periphery (1b) and the element surfaces (10) is in the range of from 10:1 to 40:1.
摘要翻译： 角速率传感器或陀螺仪包括由从环（1）的内周延伸到基座（3）上的凸台（4）的支撑梁（2）安装的环形谐振器（1）。 支撑梁（2）是柔性的，并且允许谐振器（1）响应于基本无阻尼的振荡模式中的静电驱动（6,8）振动，以允许谐振器响应于转速而相对于支撑件移动。 支撑梁（2）和谐振器（1）由晶体硅制成。 静电传感器（7,9）用于感测谐振器（1）的移动。 驱动器（6,8）和传感器（7,9）具有由晶体硅制成的板状元件，其具有基本上垂直于谐振器（1）的平面的表面，其间隔与谐振器（1）的相邻外周隔开 ）。 在外周（1b）处的谐振器（1）的厚度与周边（1b）和元件表面（10）之间的间隔（11）的宽度的比率在10:1至 40：1。
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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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