公开(公告)号：US20240287404A1

公开(公告)日：2024-08-29

申请号：US18507758

申请日：2023-11-13

申请人： Northwestern University ,  U.S. Army Research Laboratory ATTN: RDRL-LOC-I

发明人： Stephen Berkebile ,  Harry D. Wise ,  Tobias Vela Martin ,  Qian Wang ,  Yip-Wah Chung ,  Zaid Ali Subhi Al Hassan

IPC分类号： C10M129/46 ,  C10M101/02 ,  C10N40/20

CPC分类号： C10M129/46 ,  C10M101/02 ,  C10M2203/1025 ,  C10M2207/121 ,  C10N2040/246

摘要： Methods of pre-conditioning and lubricating the rubbing surfaces of steel substrates are provided. The methods include a pre-conditioning step in which a hydrocarbon fluid having cycloalkane carboxylic acid additives dispersed therein is used to form a tribofilm on a rubbing surface of a device, following by replacing the pre-conditioning lubricant with a cycloalkane-carboxylic acid-free hydrocarbon lubricant for the regular operation of the device. The tribofilm formed during the pre-conditioning step provides long-term friction and wear reduction at the rubbing surfaces, even after it is replaced, and allows for the subsequent operation of the device without the need to change the composition of the regularly used lubricant.

公开(公告)号：US11187136B2

公开(公告)日：2021-11-30

申请号：US15846251

申请日：2017-12-19

申请人： U.S. Army Research Laboratory ATTN: RDRL-LOC-I

发明人： Michael V. Scanlon

IPC分类号： F01N1/08 ,  F01N1/12 ,  F01N13/18 ,  F01N1/02

摘要： A noise abatement system including at least one fluid circulation chamber to receive at least one flow of fluid; at least one vorticity-inducing component adjacent to the at least one fluid circulation chamber, the at least one vorticity-inducing component to redirect the at least one flow of fluid tangentially to an inside perimeter wall of the at least one fluid circulation chamber to create fluctuations in a flow and pressure of the fluid causing increased and variable vorticity within the at least one fluid circulation chamber; and at least one vorticity-interaction region in communication with the at least one vorticity-inducing component to attenuate acoustics caused by the at least one flow of fluid.

公开(公告)号：US20210292934A1

公开(公告)日：2021-09-23

申请号：US17219697

申请日：2021-03-31

申请人： U.S. Army Research Laboratory ATTN: RDRL-LOC-I

发明人： Eric D. Wetzel ,  Larry R. Holmes, JR. ,  Ricardo X. Rodriguez ,  Patrick M. Toal, JR.

IPC分类号： D01F8/00 ,  C03B37/028 ,  B33Y70/00 ,  C03B37/027 ,  D01D5/30 ,  G02B6/00 ,  C03B19/00 ,  G02B6/02 ,  B29C65/00 ,  B29D11/00 ,  B29C65/56

摘要： A thermoplastic filament comprising multiple polymers of differing flow temperatures in a regular geometric arrangement, and a method for producing such a filament, are described. Because of the difference in flow temperatures, there exists a temperature range at which one polymer is mechanically stable while the other is flowable. This property is extremely useful for creating thermoplastic monofilament feedstock for three-dimensionally printed parts, wherein the mechanically stable polymer enables geometric stability while the flowable polymer can fill gaps and provide strong bonding and homogenization between deposited material lines and layers. These multimaterial filaments can be produced via thermal drawing from a thermoplastic preform, which itself can be three-dimensionally printed. Furthermore, the preform can be printed with precisely controlled and complex geometries, enabling the creation of monofilament and fiber with unique decorative or functional properties.

公开(公告)号：US10883659B2

公开(公告)日：2021-01-05

申请号：US15846460

申请日：2017-12-19

申请人： U.S. Army Research Laboratory ATTN: RDRL-LOC-I

发明人： Kelsen E. LaBerge ,  Stephen P. Berkebile ,  Gary D. Roberts ,  Robert F. Handschuh

IPC分类号： F16N39/04 ,  F16N25/00 ,  F16N9/00 ,  C10M107/46 ,  C10M107/48 ,  C10M177/00 ,  C08J3/00 ,  F16N15/00 ,  C10M169/04 ,  C10N50/08 ,  C10N40/02 ,  C10N40/04 ,  C10N50/00

摘要： A lubricating system includes a machine configured to operate in a first operating state and a second operating state; and a heat activated polymer material applied to at least a part of the machine and to remain solid during the first operating state and to soften upon being heated in the second operating state to lubricate the machine. The heat activated polymer material may soften due to increased friction incurred by the machine in the second operating state. A heating element may be operatively connected to any of the machine and the heat activated polymer material. The heat activated polymer material may soften due to being heated by the heating element in the second operating state. An injector may apply the heat activated polymer material to the machine. A channel may direct a flow of the heat activated polymer material as it softens in the second operating state.

公开(公告)号：US20200025855A1

公开(公告)日：2020-01-23

申请号：US16117346

申请日：2018-08-30

申请人： U.S. Army Research Laboratory ATTN: RDRL-LOC-I

发明人： Kenneth Irving Ranney ,  Gregory James Mazzaro ,  Kyle Alexander Gallagher ,  Stephen Freeman

IPC分类号： G01S3/04

摘要： A method and apparatus for receiving signals from an unknown transmitting source and providing the location of the unknown transmitting source comprising a series of channels for receiving signals radiated by the unknown transmitting sources, generating preprocessed time domain data and generating a SAR image depicting a location of the unknown transmitting source, and a processor for processing the preprocessed time domain data to enhance a pixel value at each pixel location within the SAR image by summing signal data from each channel related to each pixel location to generate an enhanced SAR image.

公开(公告)号：US20160282457A1

公开(公告)日：2016-09-29

申请号：US15093788

申请日：2016-04-08

申请人： U.S. Army Research Laboratory ATTN: RDRL-LOC-I

发明人： Gregory J. Mazzaro ,  Kenneth I. Ranney ,  Kyle A. Gallagher ,  Anthony F. Martone

IPC分类号： G01S13/10 ,  G01S7/28

CPC分类号： G01S13/106 ,  G01S7/292 ,  G01S7/414 ,  G01S13/103 ,  G01S13/887

摘要： Method for determining distance to target using a multitone nonlinear radar system comprising providing a transmitter that transmits a signal comprising at least two predetermined frequency components; receiving transmitted signal upon reflection from target; determining the phase relationships of the frequency components when signal strikes target; determining distance the signal has travelled to target based upon the phase relationship of the frequency signal components at the time of reflection from target; computing the distance to target. A system comprising a transmitter subsystem that transmits radar signal comprising at least two frequency components; a receiver subsystem configured to receive a return signal comprising intermodulation and harmonic products; at least one processor configured to extract frequency samples from the return signal within a frequency range, apply a window function to the extracted frequency samples and perform an inverse fast Fourier transform on the resulting function to create a range profile.

摘要翻译： 用于使用多音非线性雷达系统确定与目标的距离的方法，包括提供发送包括至少两个预定频率分量的信号的发射机; 从目标反射时接收发射信号; 确定信号目标时频率分量的相位关系; 基于来自目标的反射时的频率信号分量的相位关系，确定信号已经行进到目标的距离; 计算到目标的距离。 一种系统，包括发送子系统，所述发射机子系统发送包括至少两个频率分量的雷 接收器子系统，被配置为接收包括互调和谐波乘积的返回信号; 至少一个处理器被配置为在频率范围内从返回信号中提取频率样本，对所提取的频率样本应用窗口函数，并对所得到的函数执行快速傅立叶逆变换以创建范围分布。

公开(公告)号：US20160236617A1

公开(公告)日：2016-08-18

申请号：US14611905

申请日：2015-02-02

申请人： U.S. Army Research Laboratory ATTN: RDRL-LOC-I

发明人： Christopher C. Smyth

IPC分类号： B60R1/00 ,  H04N7/18 ,  H04N5/232 ,  G06K9/66 ,  G06T7/60 ,  G06K9/52 ,  G06T7/20 ,  G06T7/00 ,  B60W40/072 ,  G06K9/00

CPC分类号： B60R1/00 ,  B60R2300/207 ,  B60R2300/302 ,  B60W30/06 ,  B60W40/072 ,  G01P3/38 ,  G06K9/00335 ,  G06K9/00791 ,  G06K9/52 ,  G06K9/66 ,  G06T7/10 ,  G06T7/20 ,  G06T7/60 ,  G06T7/70 ,  G06T2207/20112 ,  G06T2207/30252 ,  H04N5/23296 ,  H04N7/18

摘要： A method and apparatus for predicting vehicle speed during an indirect vision driving task. A further method and apparatus for optimizing the display of a camera return during an indirect vision driving task based on operator perceived vehicle speed as set by the display characteristics and the field-of-view of the camera. A further method and apparatus for using the perceived speed as a driving task aid, in particular, as an electronic aider for optimizing the driving scene display characteristics of scene compression and camera field-of view. In this manner, the invention adjusts the perceived speed in order to match the operator's cognitive flow to the control dynamics needed from the operator for the task. The invention has application to autonomous driving where manual intervention is incorporated during critical events for particular tasks; and with limited display space within the vehicle, the display format is adjusted by the invention according to the operator's task needs.

摘要翻译： 一种用于在间接视觉驾驶任务期间预测车辆速度的方法和装置。 一种用于在间接视觉驾驶任务期间根据由显示特性和摄像机的视野设置的操作者感知车速来优化摄像机返回显示的另一方法和装置。 用于将感知速度用作驾驶任务的另一种方法和装置，特别是用于优化场景压缩和摄像机视场的驾驶场景显示特性的电子助手。 以这种方式，本发明调整感知速度，以便将操作者的认知流量与操作者对该任务所需的控制动力进行匹配。 本发明适用于在特定任务的关键事件期间并入手动干预的自主驾驶; 并且在车辆内具有有限的显示空间，根据操作者的任务需要通过本发明来调整显示格式。

公开(公告)号：US20160011440A1

公开(公告)日：2016-01-14

申请号：US14747084

申请日：2015-06-23

申请人： U.S. ARMY RESEARCH LABORATORY ATTN: RDRL-LOC-I

发明人： Robert C. Hoffman ,  Shizhuo Yin

IPC分类号： G02F1/03 ,  H04B10/112 ,  G02F1/00

CPC分类号： G02F1/0327 ,  G02B5/122 ,  G02F1/0018 ,  G02F1/0311 ,  G02F1/0316

摘要： An electro-optic modulator comprising at least one nanodisordered potassium tantalate niobate crystal; first and second conductors operatively connected to the nanodisordered potassium tantalate niobate crystal adapted to be connected to a voltage source to modulate light passing there through; whereby light is modulated by passing through the nanodisordered potassium tantalate niobate crystal. A method for modulating light comprising providing at least one at least one nanodisordered potassium tantalate niobate crystal; providing first and second conductors operatively connected to the nanodisordered potassium tantalate niobate crystal adapted to be connected to a voltage source to modulate light passing there through; providing an interrogating light beam striking at least one nanodisordered potassium tantalate niobate crystal; modulating light passing through the nanodisordered potassium tantalate niobate crystal; and receiving a modulated light beam.

摘要翻译： 一种电光调制器，包括至少一个纳米无序的钽酸钾铌酸盐晶体; 第一和第二导体可操作地连接到适于连接到电压源的纳米无定形的钽酸钾铌酸盐晶体，以调制通过其的光; 从而通过穿过纳米无定形的钽酸钾铌酸盐晶体来调制光。 一种调制光的方法，包括提供至少一种至少一种纳米无定形的钽酸钾铌酸盐晶体; 提供可操作地连接到纳米无定形的钽酸钾铌晶体的第一和第二导体，其适于连接到电压源以调制通过其的光; 提供至少一个纳米无序的钽酸钾铌酸盐晶体的询问光束; 调制通过纳米无定形的钽酸钾铌酸盐晶体的光; 并接收调制光束。

公开(公告)号：US20150225770A1

公开(公告)日：2015-08-13

申请号：US14178665

申请日：2014-02-12

申请人： U.S. Army Research Laboratory ATTN: RDRL-LOC-I

发明人： Dontcho V. Jelev ,  Henry S. Gibbons ,  Tsvetanka S. Zheleva

IPC分类号： C12Q1/68

CPC分类号： C12Q1/6806 ,  C12Q1/6888 ,  C12Q2600/156 ,  C12Q2600/16

摘要： Processes of specifically and effectively labeling an organism are provided. Processes involve the incorporation of a plurality of phenotype neutral tags that are differentially detected where the presence or absence of the tag is represented by a digital readout. The incorporation of stealth tags or insertion tags provides a rapid and population maintaining labeling of an organism that can be readily identified by digital PCR techniques.

摘要翻译： 提供了具体和有效地标记生物体的方法。 过程涉及在标签的存在或不存在由数字读出表示的情况下并入差异检测的多个表型中性标签。 隐藏标签或插入标签的并入提供了可以通过数字PCR技术容易地识别的生物体的快速和人口维持标记。

公开(公告)号：US20150177383A1

公开(公告)日：2015-06-25

申请号：US13848312

申请日：2013-03-21

申请人： U.S. Army Research Laboratory ATT: RDLR-LOC-I

发明人： William C. Ruff ,  Barry Lee Stann ,  Mark M. Giza ,  William B. Lawler

IPC分类号： G01S17/89 ,  G01S17/02

CPC分类号： G01S17/89 ,  G01S7/4816 ,  G01S7/4861 ,  G01S17/42 ,  G02B6/06 ,  G02B26/0833

摘要： A system comprising a laser for transmitting a beam of light towards a target area; a controller for controlling the output of the laser; a receiver for collecting reflected pulses of light reflected from the target area, the receiver comprising a plurality of receive elements, each of the receive elements having a different field of view; a combiner for combining the outputs of the receive elements into one composite signal of the target area; an interface circuitry for converting the composite signal into an image; display unit displaying output from interface circuitry.

摘要翻译： 一种系统，包括用于向目标区域传输光束的激光器; 用于控制激光器的输出的控制器; 用于收集从目标区域反射的光的反射脉冲的接收器，所述接收器包括多个接收元件，每个接收元件具有不同的视场; 组合器，用于将接收元件的输出组合成目标区域的一个复合信号; 用于将复合信号转换为图像的接口电路; 显示单元显示接口电路的输出。