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1. 发明申请

US20080114506A1 HARD LANDING DETECTION 审中-公开
标题翻译：硬着陆检测
公开(公告)号：US20080114506A1
公开(公告)日：2008-05-15
申请号：US11558815
申请日：2006-11-10
申请人： Christopher L. Davis , Jack S. Hagelin , Jonathan R. LePere , David P. Earle , Richard J. Reuter , Aydin Akdeniz , Eric D. Haugse , David M. Anderson
发明人： Christopher L. Davis , Jack S. Hagelin , Jonathan R. LePere , David P. Earle , Richard J. Reuter , Aydin Akdeniz , Eric D. Haugse , David M. Anderson
IPC分类号： G06F19/00
CPC分类号： G05B13/0265 , B64D2045/008 , G05B23/024
摘要： A method and system for detecting a hard landing or other high load event of an aircraft are disclosed. A heuristic algorithm may be used to estimate loads experienced by the aircraft during landing. The heuristic algorithm may use flight parameters and/or measured sensor information to estimate the loads. The heuristic algorithm may be trained by means of analytical loads predictions and/or test measurements. The heuristic algorithm may be updated during operation. This invention may potentially reduce the number of unnecessary structural inspections, and may also limit the scope of any such required inspections.
摘要翻译：公开了一种用于检测飞机的硬着陆或其他高负载事件的方法和系统。启发式算法可用于估计飞机在着陆期间经历的载荷。启发式算法可以使用飞行参数和/或测量的传感器信息来估计负载。可以通过分析负载预测和/或测试测量来训练启发式算法。启发式算法可能在操作期间被更新。本发明可能潜在地减少不必要的结构检查的数量，并且还可以限制任何这种所需检查的范围。

2. 发明授权

US06236143B1 Transfer having a coupling coefficient higher than its active material 有权
标题翻译：传感器的耦合系数高于其活性材料
公开(公告)号：US06236143B1
公开(公告)日：2001-05-22
申请号：US09380122
申请日：1999-08-25
申请人： George A. Lesieutre , Christopher L. Davis
发明人： George A. Lesieutre , Christopher L. Davis
IPC分类号： H01L4108
CPC分类号： H01L41/0973 , H01L41/0933
摘要： A coupling coefficient is a measure of the effectiveness with which a shape-changing material (or a device employing such a material) converts the energy in an imposed signal to useful mechanical energy. Device coupling coefficients are properties of the device and, although related to the material coupling coefficients, are generally different from them. This invention describes a class of devices wherein the apparent coupling coefficient can, in principle, approach 1.0, corresponding to perfect electromechanical energy conversion. The key feature of this class of devices is the use of destabilizing mechanical pre-loads to counter inherent stiffness. The approach is illustrated for piezoelectric and thermoelectrically actuated devices. The invention provides a way to simultaneously increase both displacement and force, distinguishing it from alternatives such as motion amplification, and allows transducer designers to achieve substantial performance gains for actuator and sensor devices.
摘要翻译：耦合系数是对形状改变材料（或使用这种材料的器件）将施加的信号中的能量转换为有用的机械能的有效性的量度。器件耦合系数是器件的特性，尽管与材料耦合系数有关，但它们通常不同。本发明描述了一类装置，其中表观耦合系数原则上可以接近1.0，对应于完美的机电能量转换。这类设备的关键特征是使用不稳定的机械预载来抵抗固有的刚度。图示了压电和热电驱动装置的方法。本发明提供了一种同时增加位移和力的方式，将其与诸如运动放大的替代物区分开，并且允许换能器设计者为致动器和传感器装置实现显着的性能增益。

3. 发明授权

US5339671A Calibration cuvette 失效
标题翻译：校准比色皿
公开(公告)号：US5339671A
公开(公告)日：1994-08-23
申请号：US888549
申请日：1992-05-22
申请人： Jamil Ahmad , Samuel D. Riccitelli , Charles S. Bankert , Richard Hannah , Christopher L. Davis
发明人： Jamil Ahmad , Samuel D. Riccitelli , Charles S. Bankert , Richard Hannah , Christopher L. Davis
IPC分类号： G01N21/03 , A61B5/00 , B01L3/00 , B01L5/04 , G01N21/27 , G01N27/416 , G01D18/00
CPC分类号： B01L3/00 , A61B5/1459 , A61B5/1495 , B01L5/04 , G01N27/4163 , A61B2560/0233
摘要： The calibration cuvette apparatus for storing and calibrating a chemical sensor in a tonometered solution includes an upper cuvette section and a lower cylindrical valve section for alternately sealing the cuvette section and admitting a gas mixture to the cuvette section. The upper cuvette section has relatively narrow diameter upper and lower ends on either side of a wide diameter middle portion. The cuvette section is adapted to receive the sensor and retain the sensor in a fluid bath in the cuvette section so that the chemical sensor portion is disposed approximately in the center of the wide middle portion of the cuvette section. The chamber formed within the cuvette section is thus shaped so as to maintain the sensor in a position in the fluid bath so that any gas bubbles within the chamber will not dry the sensor. A lower end portion of the cuvette section includes a gas communication inlet for introducing gas into said chamber to equilibrate the tonometered buffer solution.
摘要翻译：用于存储和校准计量溶液中的化学传感器的校准比色皿装置包括上比色皿部分和下圆柱形阀部分，用于交替地密封比色皿部分并将气体混合物导入比色皿部分。上部比色皿部分在宽直径中间部分的任一侧具有相对窄的上端和下端。该比色皿部分适于接纳传感器，并将传感器保持在比色杯部分中的流体浴中，使得化学传感器部分大致设置在比色皿部分的宽中间部分的中心。因此，形成在比色皿部分内的腔体被成形为将传感器保持在流体浴中的位置，使得腔室内的任何气泡不会干燥传感器。反应杯部分的下端部分包括用于将气体引入所述室中的气体连通入口以平衡缓冲溶液。

4. 发明授权

US06858970B2 Multi-frequency piezoelectric energy harvester 有权
标题翻译：多频压电能量采集器
公开(公告)号：US06858970B2
公开(公告)日：2005-02-22
申请号：US10274577
申请日：2002-10-21
申请人： Matthew C. Malkin , Christopher L. Davis
发明人： Matthew C. Malkin , Christopher L. Davis
IPC分类号： H01L41/113 , H02N2/18 , H01L41/08
CPC分类号： H01L41/1136
摘要： A piezoelectric device connected to a vibration source converts vibration energy to electrical current. A plurality of pairs of oppositely polarized piezoelectric wafers deflect to produce an electrical current. Each pair of wafers are arranged back-to-back and electrically joined together. The plurality of pairs of wafers are each connected to a set of micro-machined parts. Each pair of wafers form a bimorph, configured as a cantilevered beam attached to a set of parts to form an element. Each cantilevered beam has a mass weighted first end and is fixedly attached to one or more flexible sheaths on a second end. A plurality of elements form a cell unit. A plurality of cell units form an array. The electrical current produced varies by the number of elements per cell unit, and/or with the number of cell units per array.
摘要翻译：连接到振动源的压电装置将振动能量转换为电流。多对相对极化的压电晶片偏转以产生电流。每对晶片被背对背地布置并电连接在一起。多对晶片各自连接到一组微加工零件。每对晶片形成双压电晶片，其构造为连接到一组部件以形成元件的悬臂梁。每个悬臂梁具有质量称重的第一端，并且固定地附接到第二端上的一个或多个柔性护套。多个元件形成单元单元。多个单元单元形成阵列。所产生的电流随每个单元单元的元件数量和/或每个阵列的单元数量数量而变化。

5. 发明授权

US09371655B1 Dolly apparatus for door installation 有权
标题翻译：用于门安装的Dolly设备
公开(公告)号：US09371655B1
公开(公告)日：2016-06-21
申请号：US14146784
申请日：2014-01-03
申请人： Christopher L. Davis , Faye E. Davis
发明人： Christopher L. Davis , Faye E. Davis
IPC分类号： E04G21/14 , E04F21/00
CPC分类号： E04F21/0007 , E04F21/0023
摘要： A dolly apparatus for door installation transports and facilitates the installation of multiple doors. The apparatus includes a frame. A plurality of wheels is coupled to and extends rearwardly from the frame. A support bracket is coupled to the frame and is configured to support a door thereon. A first guide member is coupled to and extends forwardly from the frame. The first guide member forms a first slot configured to receive a non-hinged side of the door therein. A pair of arms is coupled to the frame. The arms are positioned in spaced parallel relationship relative to each other and extend forwardly from the frame. A plurality of casters is provided and each is configured to contact a ground surface. One of the casters is coupled a first one of the arms. One of the casters is coupled to a second one of the arms.
摘要翻译：用于门安装的小车装置运输并且便于安装多个门。该装置包括一个框架。多个轮子联接到框架并且从框架向后延伸。支撑托架联接到框架并且构造成在其上支撑门。第一引导构件联接到框架并向前延伸。第一引导构件形成构造成在其中接收门的非铰接侧的第一槽。一对臂连接到框架。臂相对于彼此以间隔开的平行关系定位并且从框架向前延伸。提供多个脚轮，并且每个脚轮构造成接触地面。其中一个脚轮与第一个臂结合。其中一个脚轮与第二个臂结合。

6. 发明申请

US20080319692A1 TRANSDUCER HEALTH DIAGNOSTICS FOR STRUCTURAL HEALTH MONITORING (SHM) SYSTEMS 有权
标题翻译：用于结构健康监测（SHM）系统的传感器健康诊断
公开(公告)号：US20080319692A1
公开(公告)日：2008-12-25
申请号：US11766445
申请日：2007-06-21
申请人： Christopher L. Davis , Justin D. Kearns , V. John Mathews
发明人： Christopher L. Davis , Justin D. Kearns , V. John Mathews
IPC分类号： G01R23/00
CPC分类号： G01N29/09 , B06B1/06 , B06B2201/40 , G01H3/005 , G01N29/348 , G01N29/4418 , G01N29/4454 , G01N2291/0258
摘要： A method for diagnosing the health of a transducer may include transmitting a signal to a transducer to cause the transducer to transmit a stress wave into an object being monitored, wherein the signal has a predetermined frequency range or bandwidth. The method may also include receiving response data for the transducer and transforming the response data to data representative of an impedance curve of impedance versus frequency for the predetermined frequency range. The method may further include extracting selected parameters from the impedance curve to diagnose the health of the transducer.
摘要翻译：用于诊断换能器健康的方法可以包括将信号发送到换能器以使得换能器将应力波传输到被监视的对象中，其中该信号具有预定的频率范围或带宽。该方法还可以包括接收换能器的响应数据，并将响应数据转换成代表预定频率范围的阻抗对频率的阻抗曲线的数据。该方法还可以包括从阻抗曲线提取所选参数以诊断换能器的健康状况。

7. 发明授权

US06193032B1 Piezoceramic vibration control device and tuning control thereof 失效
标题翻译：压电振动控制装置及其调谐控制
公开(公告)号：US06193032B1
公开(公告)日：2001-02-27
申请号：US09033570
申请日：1998-03-02
申请人： George A. Lesieutre , Christopher L. Davis , Jeffrey J. Dosch
发明人： George A. Lesieutre , Christopher L. Davis , Jeffrey J. Dosch
IPC分类号： F16F710
CPC分类号： F16F15/005 , B64C27/001 , F16F7/1005
摘要： A piezoceramic vibration control device in which stiffness is established by a capacitor in shunt with piezoceramic element of the device. The device can be formed of a stack of piezoceramic elements bonded to one another and precompressed by a spring. A control system is arranged to tune the natural frequency of the vibration control device to a disturbance frequency or s primary structural response frequency by varying the capacitance of the capacitor.
摘要翻译：压电陶瓷振动控制装置，其中通过电容器建立刚度，该电容器与装置的压电陶瓷元件分流。该装置可以由彼此结合并由弹簧预压缩的压电陶瓷元件的堆叠形成。控制系统被布置成通过改变电容器的电容来将振动控制装置的固有频率调谐到干扰频率或主要结构响应频率。

8. 发明授权

US5045414A Reactant gas composition for fuel cell potential control 失效
标题翻译：用于燃料电池电势控制的反应气组成
公开(公告)号：US5045414A
公开(公告)日：1991-09-03
申请号：US458852
申请日：1989-12-29
申请人： Calvin L. Bushnell , Christopher L. Davis
发明人： Calvin L. Bushnell , Christopher L. Davis
IPC分类号： H01M8/04 , H01M8/06
CPC分类号： H01M8/04223 , H01M8/0612 , H01M8/04231
摘要： A fuel cell (10) system in which a nitrogen (N.sub.2) gas is used on the anode section (11) and a nitrogen/oxygen (N.sub.2 /O.sub.2) gaseous mix is used on the cathode section (12) to maintain the cathode at an acceptable voltage potential during adverse conditions occurring particularly during off-power conditions, for example, during power plant shutdown, start-up and hot holds. During power plant shutdown, the cathode section is purged with a gaseous mixture of, for example, one-half percent (0.5%) oxygen (O.sub.2) and ninety-nine and a half percent (99.5%) nitrogen (N.sub.2) supplied from an ejector (21) bleeding in air (24/28) into a high pressure stream (27) of nitrogen (N.sub.2) as the primary or majority gas. Thereafter the fuel gas in the fuel processor (31) and the anode section (11) is purged with nitrogen gas to prevent nickel (Ni) carbonyl from forming from the shift catalyst. A switched dummy electrical load (30) is used to bring the cathode potential down rapidly during the start of the purges. The 0.5%/99.5% O.sub.2 /N.sub.2 mixture maintains the cathode potential between 0.3 and 0.7 volts, and this is sufficient to maintain the cathode potential at 0.3 volts for the case of H.sub.2 diffusing to the cathode through a 2 mil thick electrolyte filled matrix and below 0.8 volts for no diffusion at open circuit conditions. The same high pressure gas source (20) is used via a "T" juncture ("T") to purge the anode section and its associated fuel processor (31).
摘要翻译：一种燃料电池（10）系统，其中在阳极部分（11）上使用氮（N 2）气体，并且在阴极部分（12）上使用氮/氧（N 2 / O 2）气体混合物以将阴极维持在在不利条件下，特别是在断电条件下，例如在电厂关机，启动和热保持期间，可接受的电压电位。在发电厂关闭期间，阴极部分用例如氧气（O 2）的百分之二（0.5％）和九十九％（99.5％）氮气（N 2）的气体混合物吹扫，喷射器（21）在空气（24/28）中渗入作为主要或多数气体的氮气（N 2）的高压流（27）。此后，用氮气吹扫燃料处理器（31）和阳极部分（11）中的燃料气体，以防止由变换催化剂形成的镍（Ni）羰基。在开始清洗期间，使用开关的虚拟电负载（30）使阴极电位迅速下降。 0.5％/ 99.5％的O 2 / N 2混合物保持阴极电位在0.3和0.7伏特之间，这足以将阴极电位保持在0.3伏，这是因为H2通过2密耳厚的电解质填充的基质向阴极扩散，低于0.8伏，在开路条件下不扩散。通过“T”接头（“T”）使用相同的高压气体源（20）来净化阳极部分及其相关联的燃料处理器（31）。

9. 发明授权

US07487059B2 Transducer health diagnostics for structural health monitoring (SHM) systems 有权
标题翻译：用于结构健康监测（SHM）系统的传感器健康诊断
公开(公告)号：US07487059B2
公开(公告)日：2009-02-03
申请号：US11766445
申请日：2007-06-21
申请人： Christopher L. Davis , Justin D. Kearns , V. John Mathews
发明人： Christopher L. Davis , Justin D. Kearns , V. John Mathews
IPC分类号： G06F19/00
CPC分类号： G01N29/09 , B06B1/06 , B06B2201/40 , G01H3/005 , G01N29/348 , G01N29/4418 , G01N29/4454 , G01N2291/0258
摘要： A method for diagnosing the health of a transducer may include transmitting a signal to a transducer to cause the transducer to transmit a stress wave into an object being monitored, wherein the signal has a predetermined frequency range or bandwidth. The method may also include receiving response data for the transducer and transforming the response data to data representative of an impedance curve of impedance versus frequency for the predetermined frequency range. The method may further include extracting selected parameters from the impedance curve to diagnose the health of the transducer.
摘要翻译：用于诊断换能器健康的方法可以包括将信号发送到换能器以使得换能器将应力波传输到被监视的对象中，其中该信号具有预定的频率范围或带宽。该方法还可以包括接收换能器的响应数据，并将响应数据转换成代表预定频率范围的阻抗对频率的阻抗曲线的数据。该方法还可以包括从阻抗曲线提取所选参数以诊断换能器的健康状况。

10. 发明授权

US07085388B2 High frequency jet nozzle actuators for jet noise reduction 失效
公开(公告)号：US07085388B2
公开(公告)日：2006-08-01
申请号：US10172755
申请日：2002-06-14
申请人： George W. Butler , David H. Reed , Frederick T. Calkins , Christopher L. Davis , James H. Mabe
发明人： George W. Butler , David H. Reed , Frederick T. Calkins , Christopher L. Davis , James H. Mabe
IPC分类号： A61F11/06
CPC分类号： G10K11/161
摘要： A noise reduction system for use with an exhaust nozzle associated with a jet engine of an aircraft. The noise reduction system employs a plurality of flow-altering components disposed circumferentially about a lip portion of an exhaust nozzle. In one preferred form the flow-altering components each comprise piezoelectric transduction layers. The flow-altering components are caused to move in an oscillating manner by an AC signal applied thereto such that they move into and out of the exhaust gas emitted from the exhaust nozzle to achieve a desired degree of intermixing of the exhaust flow with the flow adjacent the exhaust nozzle. This produces a reduction in the noise generated by the jet engine. The noise reduction can be utilized during takeoff conditions of an aircraft. The flow-altering components are maintained out of the exhaust gas flowpath during cruise conditions of the aircraft so as not to cause a reduction of thrust, that would in turn result in an increase in the fuel burn during cruise conditions.

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