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公开(公告)号：US06204823B1
公开(公告)日：2001-03-20
申请号：US09264922
申请日：1999-03-09
申请人： Dawson P. Spano , Amy J. Ostby , Dennis A. Green
发明人： Dawson P. Spano , Amy J. Ostby , Dennis A. Green
IPC分类号： H01Q300
CPC分类号： H01Q21/065 , H01Q1/125 , H01Q3/08
摘要： An antenna positioner includes a housing and a hub mounted within the housing. A substantially planar configured support plate is rotatably mounted on the hub. A substantially elongate antenna is pivotally mounted on the support plate. An elevation drive mechanism is mounted on the support plate and interconnects the antenna for pivoting the antenna a predetermined angle and adjusting elevation of the antenna. An azimuth drive mechanism is mounted on the support plate and interconnects the hub and rotates the support plate relative to the hub a predetermined arcuate distance relative to the hub and adjusts azimuth of the antenna. A controller is operatively connected to the elevation drive mechanism and the azimuth drive mechanism and controls the azimuth and elevation drive mechanisms to adjust elevation and azimuth.
摘要翻译： 天线定位器包括壳体和安装在壳体内的轮毂。 基本上平面的构造的支撑板可旋转地安装在轮毂上。 基本上细长的天线枢转地安装在支撑板上。 升降驱动机构安装在支撑板上并互连天线，以使天线枢转预定角度并调整天线的高度。 方位驱动机构安装在支撑板上并且互连轮毂并相对于轮毂将支撑板相对于轮毂旋转预定的弓形距离并且调节天线的方位角。 控制器可操作地连接到升降驱动机构和方位驱动机构，并且控制方位角和仰角驱动机构以调节仰角和方位角。
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公开(公告)号：US06195060B1
公开(公告)日：2001-02-27
申请号：US09264923
申请日：1999-03-09
申请人： Dawson P. Spano , Amy J. Ostby , Dennis A. Green
发明人： Dawson P. Spano , Amy J. Ostby , Dennis A. Green
IPC分类号： H01Q300
CPC分类号： H01Q3/08 , H01Q1/28 , H01Q1/3275
摘要： An antenna positioner control system and related method is disclosed. The antenna positioner control system includes a housing and a hub mounted within a housing. A support plate is rotatably mounted on the hub. An antenna is pivotally mounted on the support plate. At least one elevation drive servomotor is mounted on the support plate and interconnects the antenna for pivoting the antenna a predetermined angle and adjusting elevation of the antenna. At least one azimuth drive servomotor is mounted on the support plate and interconnects the antenna for rotating the support plate relative to the hub a predetermined arcuate distance for adjusting azimuth of the antenna. An antenna control unit is operatively connected to the elevation drive servomotor and azimuth drive servomotor and includes an elevation control circuit and azimuth control circuit. Each of the control circuits include a position feedback control loop, a resolver positioned within the position feedback control loop, a rate feedback control loop, a tachometer positioned within the rate feedback control loop, and a motor feedback control loop.
摘要翻译： 公开了一种天线定位器控制系统及相关方法。 天线定位器控制系统包括壳体和安装在壳体内的轮毂。 支撑板可旋转地安装在轮毂上。 天线可枢转地安装在支撑板上。 至少一个升降驱动伺服电动机安装在支撑板上并互连天线，以使天线枢转预定角度并调整天线的高度。 至少一个方位驱动伺服电动机安装在支撑板上并互连天线，用于相对于轮毂旋转支撑板预定的弧形距离，用于调节天线的方位角。 天线控制单元可操作地连接到升降驱动伺服电动机和方位驱动伺服电动机，并且包括升降控制电路和方位控制电路。 每个控制电路包括位置反馈控制回路，位于位置反馈控制回路内的旋转变压器，速率反馈控制回路，位于速率反馈控制回路内的转速计和电动机反馈控制回路。
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公开(公告)号：US4612815A
公开(公告)日：1986-09-23
申请号：US701390
申请日：1985-02-14
申请人： Dennis A. Green , Thomas L. Purcell
发明人： Dennis A. Green , Thomas L. Purcell
CPC分类号： G01N1/14 , G01N2001/1037 , G01N2001/1418 , G01N2001/2071
摘要： Apparatus for sampling a material in a container both in a laboratory environment and in a field environment is shown. The apparatus includes a portable pump for generating either a partial pressure with respect to atmosphere or a partial vacuum with respect to atmosphere. The partial vacuum is used to force the material from the container through a collection tube into a specimen bottle. When the material in the container is too viscous to be directly drawn into the specimen bottle, a pressure is applied to one end of the collection tube and the material in the collection tube is driven into the specimen bottle. The footpump is modified to provide both a pressure and a vacuum nozzle and is easily portable to a remote location site.
摘要翻译： 示出了用于在实验室环境和现场环境中对容器中的材料进行取样的装置。 该装置包括便携式泵，用于产生相对于大气的分压或相对于大气的部分真空。 部分真空用于迫使来自容器的材料通过收集管进入标本瓶。 当容器中的材料太粘而不能直接吸入样品瓶中时，将压力施加到收集管的一端并将采集管中的材料推入样品瓶中。 脚踏泵被修改以提供压力和真空喷嘴，并且可以容易地移动到远程位置。
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公开(公告)号：US06417730B1
公开(公告)日：2002-07-09
申请号：US09727301
申请日：2000-11-29
申请人： Greg P. Segallis , Gary L. Bastin , Dennis A. Green , David S. Albert , Robert L. Johnson , Frank R. Brueggeman
发明人： Greg P. Segallis , Gary L. Bastin , Dennis A. Green , David S. Albert , Robert L. Johnson , Frank R. Brueggeman
IPC分类号： H03G320
CPC分类号： H03G3/001 , H03G3/3052
摘要： An automatic gain control (AGC) system includes at least one variable-gain component having a controllable gain over a gain control range and a sensor for sensing an amplitude of a signal from the at least one variable-gain control component. The sensor may have an operating window based upon the signal that is smaller than the gain control range of the at least one variable-gain component. The AGC system may also include a controller responsive to the sensor for controlling the at least one variable-gain component according to coarse and fine gain values to set the amplitude of the signal within the operating window of the sensor. The controller may implement at least one coarse gain jump from a current coarse gain value to a new coarse gain value when the sensor indicates the amplitude is outside the operating window. The controller may further implement movement to a fine gain value when the sensor indicates the amplitude is in the operating window.
摘要翻译： 自动增益控制（AGC）系统包括在增益控制范围上具有可控增益的至少一个可变增益分量和用于感测来自至少一个可变增益控制部件的信号幅度的传感器。 传感器可以基于小于至少一个可变增益分量的增益控制范围的信号来具有操作窗口。 AGC系统还可以包括响应于传感器的控制器，用于根据粗略和微小的增益值来控制至少一个可变增益分量，以将信号的幅度设置在传感器的操作窗口内。 当传感器指示幅度在操作窗口之外时，控制器可以实现从当前粗增益值到新的粗增益值的至少一个粗增益跳跃。 当传感器指示幅度在操作窗口中时，控制器可以进一步实现移动到精细增益值。
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公开(公告)号：US06400549B1
公开(公告)日：2002-06-04
申请号：US09566457
申请日：2000-05-08
IPC分类号： H01H4700
CPC分类号： H01F7/206 , B25J7/00 , B25J15/0246 , H01F2007/208
摘要： A dual cantilevered electromagnet-based gripping mechanism has a reduced number of parts and operates with low power demand properties for use in micro-tool applications. Juxtaposed, cantilever-supported electromagnets, to which object engagement elements, such as gripping pincers, are attached, have their cores made of a low permeability material, such as stainless steel, that does not retain an induced magnetic field once the energizing current is terminated. By controlling the energizing current through the coils of the electromagnets, the magnitude of mutual magnetic attraction against the spring forces of their supporting cantilever arms is defined. This allows mutual separation between the electromagnets and object engagement force to be controlled, for seizure, retention, and release of an object. The displacement vs. current characteristic of the device has a hysteresis profile, which allows the coil energizing current to be reduced to a very low ‘sustaining’ value that minimizes power dissipation, yet keeps the gripping elements closed on the object. To release the object, the energizing current is controllably reduced, which collapses the magnetic fields in the electromagnets and allows the spring force of the cantilever arms to return the gripping elements to their default open positions.
摘要翻译： 双悬臂电磁铁夹持机构具有减少的部件数量，并以低功率需求性能运行，用于微型工具应用。 并联的悬臂支撑的电磁铁，其中附接有物体接合元件（例如夹持钳）的芯具有由低导磁率材料（例如不锈钢）制成的芯，其在通电电流终止时不保持感应磁场 。 通过控制通过电磁体的线圈的通电电流，限定了抵抗其支撑悬臂的弹簧力的相互磁吸引的大小。 这允许控制电磁体和物体接合力之间的相互分离，以防止物体的发生，保持和释放。 器件的位移 - 电流特性具有滞后曲线，这使得线圈通电电流可以减小到最小化功耗的非常低的“维持”值，同时将夹紧元件保持在物体上。为了释放物体 可控制地减小通电电流，这会使电磁体中的磁场塌陷，并允许悬臂的弹簧力将夹紧元件返回到其默认的打开位置。
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公开(公告)号：US4305074A
公开(公告)日：1981-12-08
申请号：US148890
申请日：1980-05-12
摘要： An electromagnetic detection apparatus for sensing an object, has a transter for radiating electromagnetic energy toward the object. The apparatus also has an array of at least three spaced receiving antennas and one parasitic antenna. The parasitic antenna is spaced from and mounted alongside the array. Also included is a phase detection circuit for measuring the phase difference between signals received by one of the receiving antennas with respect to the other two. This apparatus can sense phase difference and correlate it to the azimuthal position of the object.
摘要翻译： 一种用于感测物体的电磁检测装置，具有朝向物体辐射电磁能的发射器。 该装置还具有至少三个间隔的接收天线和一个寄生天线的阵列。 寄生天线与阵列间隔开并安装在阵列旁边。 还包括相位检测电路，用于相对于其他两个测量接收天线之一接收的信号之间的相位差。 该装置可以感测相位差并将其与物体的方位位置相关联。
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