公开(公告)号：US5893054A

公开(公告)日：1999-04-06

申请号：US120871

申请日：1993-09-07

申请人： Stanley A. White

发明人： Stanley A. White

IPC分类号： G01C19/5607 ,  G06F191/00

CPC分类号： G01C19/5607

摘要： An estimate of amplitude of a sinusoidal signal is computed from a value of the signal by computing the value of a quadrature-phase signal and computing the amplitude based on the value of the signal and the value of the quadrature-phase signal. The quadrature-phase signal is computed, for example, by a Hilbert transform. The amplitude is approximated as the sum of the magnitude of one value and an even polynomial of the other value when the magnitude of the other value is relatively small. The amplitude is computed precisely by an iterative application of the approximation. In an automatic gain control, for example, the desired value is substituted for the actual amplitude in the iterative formula, to compute an error estimate that always has the same sign as the actual error. Therefore, the automatic gain control converges to set the amplitude of the sinusoidal signal to the desired value.

摘要翻译： 通过计算正交相位信号的值，并根据信号的值和正交相位信号的值计算振幅，从信号的值计算出正弦信号的振幅的估计。 正交相位信号例如通过希尔伯特变换来计算。 当另一个值的幅度相对较小时，振幅近似为一个值的幅度和另一个值的偶数多项式的和。 通过迭代应用近似来精确计算振幅。 在自动增益控制中，例如，用迭代公式中的实际幅度代替期望值，以计算总是具有与实际误差相同符号的误差估计。 因此，自动增益控制收敛以将正弦信号的幅度设定为期望值。

公开(公告)号：US5830289A

公开(公告)日：1998-11-03

申请号：US595316

申请日：1996-02-01

申请人： Sami M. El-Soudani

发明人： Sami M. El-Soudani

IPC分类号： B23K11/00 ,  B23K11/18 ,  B23K20/02 ,  C22F1/18 ,  C21D9/50

CPC分类号： B23K20/023 ,  B23K11/0093 ,  C22F1/183 ,  B23K11/18 ,  B23K2201/02 ,  B23K2203/14

摘要： A process for enhancing the bond strength of resistance welded joints between titanium alloy articles includes a first step of resistance welding two titanium alloy articles and a second step of heat treating the resistance welded titanium alloy articles in a vacuum or inert environment at temperatures in a range of 1675.degree. F. to 1825.degree. F. for a period of 15 minutes to 4 hours. The process of the present invention is particularly useful in providing efficient joining of face sheets to a honecomb core element.

摘要翻译： 一种用于提高钛合金制品之间的电阻焊接接头的结合强度的方法包括对两种钛合金制品进行电阻焊接的第一步骤和在真空或惰性环境中在一定范围内的温度下对电阻焊接的钛合金制品进行热处理的第二步骤 为1675°F至1825°F，时间为15分钟至4小时。 本发明的方法特别可用于提供面板到有效核心元件的有效接合。

公开(公告)号：US5808924A

公开(公告)日：1998-09-15

申请号：US676653

申请日：1996-07-08

申请人： Stanley A. White

发明人： Stanley A. White

IPC分类号： H03H17/04 ,  G06F17/10

CPC分类号： H03H17/045 ,  H03H17/0416

摘要： A first-order filter apparatus 48 (FIG. 4) includes an integrate-and-dump (I&D) circuit 50 and an output loop 52. The I&D circuit 50 is driven by a cyclic scaling element 54, which multiplies N consecutive input signals 56, x(m+1) to x(m+N), by a cycle of N scaling factors 58, c(1) to c(N). The I&D summer 60 drives a double-throw switch 62. The double-throw switch 62 applies the output of the I&D summer 60 to an I&D delay element 64 for N-1 input clock cycles, and for an Nth input clock cycle to the input of a non-cyclic scaling element 66. The non-cyclic scaling element 66 scales its input by a non-cyclic scaling factor, and applies its output to one input of a feedback summer 68. The output of the feedback summer 68 is y(k), the output of the apparatus. The index k advances by one every time that the index m advances by N. The output of the feedback summer 68 is also applied to an output feedback multiplying element 70, which multiplies it by B.sup.N. The output feedback multiplying element 70 applies its output to a feedback delay element 72, an output of which is applied to the other input of the feedback summer 68. Additional first-order (FIG. 4), and comparable second-order (FIG. 8), filter apparatus are weighted and summed to form a filter (FIG. 10).

摘要翻译： 一阶滤波器装置48（图4）包括积分和转储（I＆D）电路50和输出环路52.I＆D电路50由循环缩放元件54驱动，循环缩放元件54将N个连续输入信号56 ，x（m + 1）至x（m + N）乘以N个缩放因子58，c（1）至c（N）的周期。 I＆D夏季60驱动双掷开关62.双掷开关62将I＆D加法器60的输出施加到I-D延迟元件64用于N-1个输入时钟周期，并将第N个输入时钟周期应用于输入 非循环缩放元件66通过非循环缩放因子对其输入进行缩放，并将其输出应用于反馈加法器68的一个输入。反馈加法器68的输出是y（ k），设备的输出。 每当索引m前进N时，索引k前进一个。反馈加法器68的输出也被施加到将其乘以BN的输出反馈乘法单元70。 输出反馈乘法元件70将其输出应用于反馈延迟元件72，反馈延迟元件72的输出被施加到反馈加法器68的另一个输入。附加一阶（图4）和可比较的二阶（图4）。 8），对滤波器装置进行加权和求和以形成滤波器（图10）。

公开(公告)号：US5795426A

公开(公告)日：1998-08-18

申请号：US695817

申请日：1996-08-05

申请人： Dana B. Jackson ,  Donald I. Asher ,  Ronald G. Halcomb ,  John E. Vogt

发明人： Dana B. Jackson ,  Donald I. Asher ,  Ronald G. Halcomb ,  John E. Vogt

IPC分类号： B32B37/16 ,  B29C70/30 ,  B32B31/10 ,  B32B35/00

CPC分类号： B32B38/1816 ,  B29C70/30 ,  Y10T156/1052 ,  Y10T156/1093 ,  Y10T156/1097 ,  Y10T156/12 ,  Y10T156/1712 ,  Y10T156/1734

摘要： A method and apparatus for moving a first carrier tape in a first direction along a path, and a second tape toward the first tape, both in an incremental manner. After each increment of movement of the first tape, the second tape is advanced a proportional increment into overlying contact with the first tape. A press squeezes the first and second tape layers together, and a cutting mechanism is actuated to sever the overlying segment of second tape. The incremental movements of the first and second tapes are regulated so that the length of each second tape segment laid on the first tape is equal to the distance of travel of the first tape in the first direction. The direction of movement of the first tape is reversed so that at least one layer of second tape can be applied to the first tape.

摘要翻译： 一种用于沿着路径沿第一方向移动第一载带的方法和装置，以及朝向第一带的第二带。 在第一带的每次移动增量之后，第二带以比例增量前进到与第一带重叠的接触。 压机将第一和第二胶带层挤压在一起，并且切割机构被致动以切断第二带的上覆部分。 调节第一和第二带的增量运动，使得放置在第一带上的每个第二带段的长度等于第一带沿第一方向的行进距离。 第一带的移动方向相反，使得至少一层第二带可以施加到第一带。

公开(公告)号：US5781159A

公开(公告)日：1998-07-14

申请号：US721496

申请日：1996-09-27

申请人： Glenn J. Desargant

发明人： Glenn J. Desargant

IPC分类号： H01Q1/24 ,  H01Q1/38 ,  H01Q13/08 ,  H01Q23/00

CPC分类号： H01Q1/242 ,  H01Q1/38 ,  H01Q13/08 ,  H01Q23/00

摘要： Planar antennas 10a, 10b require impedance matching with their associated transceivers 20a, 20b. Conventionally, an inductance coil is placed between the transceiver 20a, 20b and the antenna 10. Such coils add loss, require space within the transciever, and increase costs. This invention replaces the inductance coil with a planar transmission line 18a, 18b within the planar antenna 10a, 10b, such as a co-planar line, slotline, or microstrip line. If desired, active circuits 30 may be applied across the transmission line 18a, 18b, with an RF choke 42 being used to allow a dc bias to drive the active circuits 30 while preventing interference with RF operation.

摘要翻译： 平面天线10a，10b需要与其相关的收发器20a，20b进行阻抗匹配。 通常，电感线圈被放置在收发器20a，20b和天线10之间。这种线圈增加损耗，需要在转码器内部的空间并且增加成本。 本发明用平面天线10a，10b（例如共面线，槽线或微带线）内的平面传输线18a，18b代替电感线圈。 如果需要，有源电路30可以跨越传输线18a，18b施加，其中使用RF扼流器42来允许直流偏置来驱动有源电路30，同时防止对RF操作的干扰。

公开(公告)号：US5725698A

公开(公告)日：1998-03-10

申请号：US632729

申请日：1996-04-15

申请人： Murray W. Mahoney

发明人： Murray W. Mahoney

IPC分类号： C22F1/04 ,  C22F1/00

CPC分类号： C22F1/04

摘要： A friction boring process creates a corrosion resistant fine grain microstructure in the wall surfaces of holes bored in aluminum alloy materials. A rotating tool is inserted directly into the aluminum material, or into a pre-drilled pilot hole, at a sufficient rotational velocity and feed rate to cause working that extends beyond the diameter of the tool, frictional heating, and extraction of aluminum material by metal deformation rather than cutting action as with a conventional drill bit. Burring, smoothing, and otherwise removing aluminum material extracted from the hole may be performed by a finishing segment that limits insertion depth of the tool. Frictional heating generates a temperature sufficient for rapid recrystallization of the remaining worked metal to form a fine grain microstructure to a depth of about 2.5 mm in the hole surfaces. Corrosion protection is retained even if some fine grain material is removed during a subsequent reaming operation. Friction boring is fast, suitable for a wide variety of aluminum alloy compositions, and easily adaptable to initial fabrication of aluminum components or to field repair of assembled structures such as on aging aircraft. The process creates a fine grain corrosion and fatigue resistant surface microstructure in aluminum alloy holes without the use of peening, heat treatments, or environmentally objectionable chemicals and coatings.

摘要翻译： 摩擦钻孔工艺在铝合金材料中钻孔的壁表面产生耐腐蚀的细晶粒微观结构。 旋转工具以足够的旋转速度和进给速率直接插入铝材料或预先钻孔的导向孔中，以引起超出工具直径的工作，摩擦加热和金属材料的提取。 变形而不是像常规钻头那样的切割动作。 可以通过限制工具的插入深度的精加工段来执行从孔中取出的铝材料的去毛刺，平滑化和其它去除。 摩擦加热产生足够的温度以使剩余的加工金属快速再结晶，从而在孔表面形成深度约2.5mm的细晶粒微结构。 即使在随后的扩孔操作期间去除了一些细颗粒材料，也保留了腐蚀保护。 摩擦钻孔是快速的，适用于各种各样的铝合金组合物，并且易于适应于初始制造铝部件或者对组装结构进行现场修理，例如在老化的飞机上。 该工艺在铝合金孔中产生细晶粒腐蚀和抗疲劳表面微结构，而不使用喷丸，热处理或环境不利的化学品和涂层。

公开(公告)号：US5715044A

公开(公告)日：1998-02-03

申请号：US312523

申请日：1989-02-22

申请人： Cecil L. Hayes

发明人： Cecil L. Hayes

IPC分类号： G01S7/483 ,  G01S17/42 ,  G01C3/08

CPC分类号： G01S17/42 ,  G01S7/483

摘要： The inventive laser radar uses a multiple frequency processing technique for the purpose of extracting relative range information from a received signal by transmitting and receiving two frequencies that are derived from a reference signal source modulated by two modulators that are driven by a different frequency, the reference frequency source also serving as a local oscillator.

摘要翻译： 本发明的激光雷达使用多频处理技术，用于通过发送和接收从由不同频率驱动的两个调制器调制的参考信号源导出的两个频率来从接收信号中提取相对范围信息，该参考信号 频率源也用作本地振荡器。

公开(公告)号：US5695827A

公开(公告)日：1997-12-09

申请号：US724081

申请日：1991-07-01

申请人： Hoda Shalaby

发明人： Hoda Shalaby

IPC分类号： C23C8/10 ,  C23C14/48 ,  B05D3/06 ,  C23C8/06

CPC分类号： C23C8/10 ,  C23C14/48

摘要： A process invention for protecting alpha-2 and gamma titanium aluminide alloy specimens subjected to high temperature oxidation comprises providing an ion beam having an energy range from about 100 keV to about 170 keV. The ion beam incorporates an elemental species capable of promoting alumina formation. The ion beam is exposed to the specimen so as to implant a dose in a range from about 2.times.10.sup.16 to about 8.times.lO.sup.17 ions/cm.sup.2 for a sufficient time period to form a surface alloy of the elemental species and titanium aluminide near the surface of the specimen.

摘要翻译： 用于保护经受高温氧化的α-2和γ钛铝化物合金样品的方法发明包括提供具有约100keV至约170keV的能量范围的离子束。 离子束包含能够促进氧化铝形成的元素物质。 将离子束暴露于样品，以便在约2×10 16至约8×10 17个离子/ cm 2的范围内注入剂量足够的时间以在样品表面附近形成元素种类和铝化钛的表面合金。

公开(公告)号：US5693267A

公开(公告)日：1997-12-02

申请号：US722533

申请日：1996-09-27

申请人： David G. Beshore ,  Alan Z. Ullman

发明人： David G. Beshore ,  Alan Z. Ullman

IPC分类号： B01F3/04

CPC分类号： B01F3/04021

摘要： This invention provides a means of achieving the close control of iodine flow rate, temperature of the resulting combined gaseous mixture of iodine in diluent gas, as well as the rapid start and stop response time needed for full-scale laser operation. It comprises an iodine charge stored as a solid and is heated to converted the iodine to a liquid, a means to heat the iodine under pressure to extend the liquid temperature range of iodine, an atomizer for complete vaporization of the iodine, a helium iodine mixer to provide heat for iodine vaporization purporting iodine to helium proportion mass ratio and provides for complete mixing and a flow control system which controls the low iodine flow rates accurately.

摘要翻译： 本发明提供了一种实现对碘流量的快速控制，所得到的稀释气体中碘的组合气体混合物的温度以及全尺寸激光操作所需的快速启动和停止响应时间的方法。 它包含以固体形式存储的碘电荷，并将碘转化为液体，在压力下加热碘以延长碘的液体温度范围，用于碘完全蒸发的雾化器，氦碘混合器 为碘提供热量，称碘为氦比例质量比，并提供完全混合和流量控制系统，可以准确控制低碘流量。

公开(公告)号：US2724682A

公开(公告)日：1955-11-22

申请号：US26275451

申请日：1951-12-21

申请人： PHILLIPS PETROLEUM CO

发明人： SHELTON RUSSELL O ,  DALE GLENN H

IPC分类号： C10G21/10

CPC分类号： C10G21/10