Servo actuator control/damping mechanism and method
    31.
    发明授权
    Servo actuator control/damping mechanism and method 失效
    伺服驱动器控制/阻尼机构及方法

    公开(公告)号:US4555974A

    公开(公告)日:1985-12-03

    申请号:US726920

    申请日:1985-04-24

    IPC分类号: F15B18/00 F15B9/09

    CPC分类号: F15B18/00

    摘要: A fluid servo actuator control/damping mechanism and method which utilize and combine the functions of an electro-mechanically driven servo valve to achieve ram or actuator fluid flow and load control even after loss of fluid power as well as the main ram position control function under normal operating conditions. The mechanism comprises a main control servo valve including a positionable valve element for selective application of fluid power to a ram, a sensor connectable to the ram for providing ram load feedback information, and an electro-mechanical drive operable independently of fluid power for selectively positioning the valve element under normal operating conditions for controlled actuation of the same and, upon loss of fluid power, for providing variable orifices to controllably meter bypass fluid flow across the ram by utilizing the existing return flow metering pattern of the servo valve and modulating the valve element thereof in response to feedback information received from the sensor, for actively controlled damping of the ram.

    摘要翻译: 一种流体伺服致动器控制/阻尼机构和方法,其利用并组合机电驱动伺服阀的功能,即使在流体动力损失之后也实现压头或致动器流体流动和负载控制以及下面的主压头位置控制功能 正常运行条件。 该机构包括主控制伺服阀,其包括用于选择性地向冲头施加流体动力的可定位阀元件,可连接到压头的传感器,用于提供压头负载反馈信息;以及机电驱动器,其可独立于流体动力运行以选择性地定位 该阀元件在正常操作条件下用于其控制致动,并且在流体动力损失时,用于通过利用伺服阀的现有回流计量模式并且调节阀门来提供可变孔口以可控地计量旁路流体流过冲程器的流量 响应于从传感器接收的反馈信息,用于主动控制压头的阻尼。

    Structure for data communications systems
    32.
    发明授权
    Structure for data communications systems 失效
    数据通信系统的结构

    公开(公告)号:US08027416B2

    公开(公告)日:2011-09-27

    申请号:US12043166

    申请日:2008-03-06

    IPC分类号: H04L27/08

    CPC分类号: H04L25/063 H04L25/0292

    摘要: A machine-readable medium thereupon stored a design structure; the design structure includes a receiver for a data communications system. The receiver includes a data path for receiving a data signal from a data channel, the data path comprising an automatic gain control (AGC) loop; and, a signal detector for generating a data valid signal indicative of the validity of the data signal in response to detection of the data signal on the channel exceeding a threshold and in dependence upon gain information from the AGC loop in the data path.

    摘要翻译: 机器可读介质存储设计结构; 该设计结构包括用于数据通信系统的接收器。 接收机包括用于从数据信道接收数据信号的数据路径,数据路径包括自动增益控制(AGC)环路; 以及信号检测器,用于响应于在信道上的数据信号的检测超过阈值并且根据来自数据路径中的AGC循环的增益信息,产生指示数据信号的有效性的数据有效信号。

    Air cooling for a phased array radar
    33.
    发明授权
    Air cooling for a phased array radar 有权
    相控阵雷达的空气冷却

    公开(公告)号:US07898810B2

    公开(公告)日:2011-03-01

    申请号:US12340171

    申请日:2008-12-19

    IPC分类号: H05K7/20

    CPC分类号: H01Q1/02 H01Q3/26 H05K7/20163

    摘要: In certain embodiments, a structure for electronic components includes a baseplate having a substantially planar shape. The baseplate defines one or more openings allowing air flow. The structure includes a frame coupled to the baseplate. The frame includes a planar support with a substantially planar shape that is substantially parallel to the baseplate. Then planar support and baseplate at least partially defines one or more plenums. The planar support is also configured to support one or more transmit/receive integrated microwave modules. The frame also includes a plurality of frame supports that define one or more channels for air flow. Each channel corresponds to one of the plenums. Additionally, the frame includes a ventilated panel with a surface defining a plurality of air inlets. The air inlets allow air into one of the one or more plenums. Also, the frame includes one or more thermal interfaces configured to dissipate heat.

    摘要翻译: 在某些实施例中,用于电子部件的结构包括具有基本上平面形状的基板。 底板限定了允许空气流动的一个或多个开口。 该结构包括耦合到基板的框架。 框架包括具有基本上平行于基板的基本上平面形状的平面支撑件。 然后,平面支撑件和底板至少部分地限定一个或多个增压室。 平面支撑件还被配置为支持一个或多个发射/接收集成微波模块。 框架还包括限定用于空气流动的一个或多个通道的多个框架支撑件。 每个通道对应于其中一个增压室。 此外,框架包括具有限定多个空气入口的表面的通风面板。 空气入口允许空气进入一个或多个增压室中的一个。 此外,框架包括被配置为散热的一个或多个热接口。

    Hermetic Covering System And Method For A Projectile
    34.
    发明申请
    Hermetic Covering System And Method For A Projectile 有权
    弹射覆盖系统及方法

    公开(公告)号:US20090152135A1

    公开(公告)日:2009-06-18

    申请号:US11946559

    申请日:2007-11-28

    IPC分类号: B65D81/26 B65D85/00 B65D33/00

    CPC分类号: F42B39/00 F41F3/042 F41F3/073

    摘要: In one embodiment, a hermetic covering system includes a projectile and at least one bag. The projectile has a body and a component that houses moisture-sensitive equipment. The at least one bag may be coupled to the body such that the projectile protrudes through the opening and the component is disposed in the inner cavity to protect the component during storage of the projectile.

    摘要翻译: 在一个实施例中,气密性覆盖系统包括射弹和至少一个袋。 抛射体具有容纳湿气敏感设备的身体和部件。 所述至少一个袋可以联接到所述主体,使得所述弹丸突出穿过所述开口,并且所述部件设置在所述内腔中,以在所述弹丸储存期间保护所述部件。

    System And Method of Digitally Testing An Analog Driver Circuit
    36.
    发明申请
    System And Method of Digitally Testing An Analog Driver Circuit 失效
    数字测试模拟驱动电路的系统和方法

    公开(公告)号:US20090027075A1

    公开(公告)日:2009-01-29

    申请号:US12189226

    申请日:2008-08-11

    IPC分类号: G01R31/28

    CPC分类号: G01R31/3167 G01R31/318544

    摘要: A circuit and method of testing an analog driver circuit using digital scan-based test methodologies. The circuit of the present invention comprises a control circuit for generating signals in response to a test enable signal, a differential driver circuit for receiving a differential input signal, amplifying the differential input signal and transmitting a differential output signal in response to the differential input signal and the signals generated by the control circuit, a programmable termination impedance circuit for generating a differential termination impedance at the output node of the differential driver circuit in response the signals generated by the control circuit, and a differential receiver circuit for receiving the differential output from the differential driver circuit, convert the differential output signal to a single ended signal and transmitting the single ended signal, all in response to the test enable signal. The method of the present invention comprises digitally testing the differential driver circuit by activating a test enable signal, skewing the differential output termination impedance in response to the test enable signal, adjusting a voltage offset of the differential receiver circuit in response to the test enable signal, selecting a power level for the differential driver circuit in response to the test enable signal, enabling a decoder in response to the test enable signal, wherein the decoder activates only one segment of the differential driver circuit during any one test sequence, activating one of the segments for testing, stimulating the differential driver circuit with digital test patterns, receiving an output of the differential driver circuit by the differential receiver circuit, converting the received differential driver output to a single-ended signal, observing the single-ended signal; and deactivating the test enable signal.

    摘要翻译: 使用基于数字扫描的测试方法测试模拟驱动器电路的电路和方法。 本发明的电路包括用于响应于测试使能信号产生信号的控制电路,用于接收差分输入信号的差分驱动器电路,放大差分输入信号并响应差分输入信号发送差分输出信号 以及由所述控制电路产生的信号,用于响应于由所述控制电路产生的信号而在所述差分驱动器电路的输出节点处产生差分终端阻抗的可编程终端阻抗电路以及用于从所述差分接收电路接收所述差分输出的差分接收电路 差分驱动器电路将差分输出信号转换为单端信号并传输单端信号,全部是响应于测试使能信号。 本发明的方法包括通过激活测试使能信号来数字测试差分驱动器电路,响应于测试使能信号偏移差动输出终​​端阻抗,响应于测试使能信号调整差分接收器电路的电压偏移 ,响应于所述测试使能信号选择所述差分驱动器电路的功率电平,使能够响应于所述测试使能信号的解码器,其中所述解码器在任何一个测试序列期间仅激活所述差分驱动器电路的一个部分, 用于测试的段,用数字测试图案刺激差分驱动器电路,通过差分接收器电路接收差分驱动器电路的输出,将接收到的差分驱动器输出转换为单端信号,观察单端信号; 并禁用测试使能信号。

    Polarization Control System and Method for an Antenna Array
    38.
    发明申请
    Polarization Control System and Method for an Antenna Array 有权
    天线阵列的极化控制系统和方法

    公开(公告)号:US20080150799A1

    公开(公告)日:2008-06-26

    申请号:US11614761

    申请日:2006-12-21

    IPC分类号: H01Q21/24

    CPC分类号: H01Q21/061 H01Q13/085

    摘要: In one embodiment, a polarization control system for an antenna array comprises a number of first and second antenna elements and a beam forming network. The first antenna elements have a direction of polarization that is different from a direction of polarization of the second antenna elements. The beam forming network, which is coupled to the first and second antenna elements, is operable to provide a second signal to a first subset of the plurality of first antenna elements that is different from a first signal that is provided to the other first antenna elements and provide a third signal to a second subset of the second antenna elements that is different from the first signal that is provided to the other second antenna elements.

    摘要翻译: 在一个实施例中,用于天线阵列的偏振控制系统包括多个第一和第二天线元件以及波束形成网络。 第一天线元件具有不同于第二天线元件的极化方向的偏振方向。 耦合到第一和第二天线元件的波束形成网络可操作以向多个第一天线元件的第一子集提供不同于提供给其它第一天线元件的第一信号的第二信号 并向第二天线元件的第二子集提供不同于提供给其它第二天线元件的第一信号的第三信号。

    DATA COMMUNICATIONS SYSTEMS
    39.
    发明申请
    DATA COMMUNICATIONS SYSTEMS 失效
    数据通信系统

    公开(公告)号:US20080037690A1

    公开(公告)日:2008-02-14

    申请号:US11737319

    申请日:2007-04-19

    IPC分类号: H04L27/08 H03K9/00

    CPC分类号: H04L25/0292 H04L25/063

    摘要: A receiver for a data communications system comprises: a data path for receiving a data signal from a data channel, the data path comprising an automatic gain control (AGC) loop; and, a signal detector for generating a data valid signal indicative of the validity of the data signal in response to detection of the data signal on the channel exceeding a threshold and in dependence upon gain information from the AGC loop in the data path.

    摘要翻译: 用于数据通信系统的接收机包括:用于从数据信道接收数据信号的数据路径,所述数据路径包括自动增益控制(AGC)环路; 以及信号检测器,用于响应于在信道上的数据信号的检测超过阈值并且根据来自数据路径中的AGC循环的增益信息,产生指示数据信号的有效性的数据有效信号。

    Active electronically scanned array antenna for satellite communications
    40.
    发明授权
    Active electronically scanned array antenna for satellite communications 有权
    用于卫星通信的主动电子扫描阵列天线

    公开(公告)号:US08334809B2

    公开(公告)日:2012-12-18

    申请号:US12288635

    申请日:2008-10-22

    IPC分类号: H01Q1/38

    摘要: An electronically scanned array antenna. The novel antenna includes a first planar array of antenna elements and one or more side planar arrays of antenna elements, each side array adjacent to the first array and tilted at a predetermined angle relative to the first array. In an illustrative embodiment, the antenna also includes a plurality of transmit/receive modules, each module coupled to one antenna element. Each transmit/receive module includes phase shifters for varying the relative phases of the antenna elements to form a desired overall beam pattern, and a low noise amplifier and high power amplifier for amplifying signals received and transmitted by the antenna element, respectively. In an illustrative embodiment, a processor provides individual phase and channel enable control signals for independently controlling the phase shifters and amplifiers, respectively, of each module.

    摘要翻译: 电子扫描阵列天线。 新型天线包括天线元件的第一平面阵列和天线元件的一个或多个侧平面阵列,每个侧阵列与第一阵列相邻并相对于第一阵列以预定角度倾斜。 在说明性实施例中,天线还包括多个发射/接收模块,每个模块耦合到一个天线元件。 每个发射/接收模块包括用于改变天线元件的相对相位以形成期望的总波束图案的移相器,以及用于分别放大由天线元件接收和发射的信号的低噪声放大器和高功率放大器。 在说明性实施例中,处理器提供单独的相位和通道使能控制信号,用于分别独立地控制每个模块的移相器和放大器。