-
公开(公告)号：US12122507B2
公开(公告)日：2024-10-22
申请号：US17354737
申请日：2021-06-22
CPC分类号： B64C27/57 , B64C27/008 , B64C27/10 , G01P5/26 , G01S17/89
摘要： A flight control system for a rotary-wing aircraft includes a shape sensor and a controller. The shape sensor is configured to measure a shape of a rotor blade during movement of the rotor blade. The controller is communicably coupled to the shape sensor and is configured to (i) receive, from the shape sensor, a first signal indicative of a first blade shape; (ii) receive a blade characteristic regarding the rotor blade; and (iii) determine at least one of a moment or force associated with the rotor blade based on the first signal and the blade characteristic.
-
2.发明公开公开(公告)号：US20230326038A1
公开(公告)日：2023-10-12
申请号：US18132444
申请日：2023-04-10
申请人： Zhejiang University
发明人： Qingqing YE , Weiqi SUN , Yihong CHEN , Xueming SHAO
CPC分类号： G06T7/215 , G06T7/12 , G06T7/155 , G06T7/62 , G06T5/002 , G06T5/30 , G01P5/26 , G06T2207/20021 , G06T2207/30242 , G06T2207/20036 , G06T2207/30204 , G06T2207/30241
摘要： A method for morphological identification, trajectory tracking, and velocity measurement of high-concentration microbubbles, includes collecting images of a microbubble group, performing image pre-processing, segmenting overlapped pixel blocks of the image of the microbubbles, identifying the image of the microbubbles, obtaining morphological information of each of the microbubbles, obtaining an equivalent diameter of each of the microbubbles, calculating a size distribution of the microbubbles; correlating the images of the microbubbles at two adjacent instants, and obtaining a velocity field and motion trajectory of the microbubbles. The method applies to morphological identification and correlation of high-concentration microbubbles and obtains the particle size distribution and velocity field information of the microbubbles.
-
公开(公告)号：US11774342B2
公开(公告)日：2023-10-03
申请号：US16833199
申请日：2020-03-27
申请人： Apple Inc.
发明人： Mehmet Mutlu , Miaolei Yan , Michael K. Brown , Richard Yeh
CPC分类号： G01N15/1434 , G01N15/06 , G01P5/001 , G01P5/20 , G01P5/26 , G01S7/4916 , G01N2015/0693 , G01N2015/1454
摘要： Various sensors, including particulate matter sensors, are described. One particulate matter sensor includes a self-mixing interferometry sensor and a set of one or more optical elements. The set of one or more optical elements is positioned to receive an optical emission of the self-mixing interferometry sensor, split the optical emission into multiple beams, and direct each beam of the multiple beams in a different direction. The self-mixing interferometry sensor is configured to generate particle speed information for particles passing through respective measurement regions of the multiple beams.
-
公开(公告)号：US11686742B2
公开(公告)日：2023-06-27
申请号：US16953838
申请日：2020-11-20
IPC分类号： G01P5/26
CPC分类号： G01P5/26
摘要： An air data system includes a laser emitter, a laser receiver, and an electronics module. The electronics module includes a processor and computer-readable memory encoded with instructions that, when executed by the processor, cause the laser to emit a coherent light pulse into a target volume locating within an exhaust flow aft of an aircraft. The laser receiver detects backscatter produced by the coherent light pulse interacting with the aft target volume, and the electronics module determines an air data parameter based on the backscatter and at least one of an engine parameter indicative of an engine condition of the aircraft and an aircraft parameter indicative of a state of the aircraft before outputting the air data parameter to a consuming system of the aircraft.
-
公开(公告)号：US20230021225A1
公开(公告)日：2023-01-19
申请号：US17950796
申请日：2022-09-22
IPC分类号： G01P5/26
摘要： A method for determining a particle velocity of an aerosol by means of an aerosol measuring device. Aerosol particles flow through a measuring cell and are illuminated with an electromagnetic beam. The scattered light is registered and detected by a sensor. The temporal signal durations of the scattered light signals are determined, and the particle velocity of the aerosol is determined on the basis of the signal durations. Furthermore, the invention provides an aerosol measuring device designed to carry out the steps of the method according to the invention for determining the particle velocity of an aerosol. In addition, a computer program having program code means is provided, which computer program is configured to carry out the steps of the method according to the invention.
-
公开(公告)号：US11486892B2
公开(公告)日：2022-11-01
申请号：US16345065
申请日：2016-10-25
发明人： Kiyoshi Tateishi , Wataru Onodera , Atsuya Ito , Tomoya Murakami , Akari Agata , Genki Adachi
摘要： This fluid measuring device is provided with: an irradiation unit that irradiates a fluid with light; a light receiving unit that receives light scattered by the fluid; a detecting unit that detects a backflow of the fluid on the basis of a light reception signal from the light receiving unit; and a calculating unit that calculates, on the basis of the detection result by the detection unit and the light reception signal from the light receiving unit, estimated fluid information indicating the flow rate or flow speed of the fluid. Accordingly, even when a backflow of the fluid temporarily occurs, the flow speed of the fluid can be precisely measured.
-
公开(公告)号：US20220260723A1
公开(公告)日：2022-08-18
申请号：US17628982
申请日：2020-07-24
发明人： Will JOHNSON
摘要： A system for determining the distance or range from a LIDAR device and the wind direction uses optics configured in the Scheimpflug condition to establish range from the LIDAR to the atmosphere being measured. This LIDAR embodiment uses correlation techniques to establish wind speed and direction. Multiple laser beam lines of sight are required to determine wind direction and speed.
-
公开(公告)号：US20220206033A1
公开(公告)日：2022-06-30
申请号：US17698474
申请日：2022-03-18
发明人： Byong-Jo YUN , Taeho KIM , Byeonggeon BAE , Taehwan AHN , Jaejun JEONG , Kyungdoo KIM
摘要： A method of manufacturing an optical fiber probe includes: stretching one end of the optical fiber in an axial direction thereof to form a first tapered portion in a first conical shape in which a diameter is gradually decreased toward a leading end of the optical fiber probe at a first ratio in an axial direction of the optical fiber probe to a point spaced a predetermined distance from a point fixed to a probe holder; and immersing and etching an end of the first tapered portion in an etching solution to form a second tapered portion formed in a second conical shape in which a diameter is gradually decreased at a second ratio greater than the first ratio in the axial direction from an end of the first tapered portion to form the leading end of the optical fiber probe.
-
公开(公告)号：US20220163556A1
公开(公告)日：2022-05-26
申请号：US16953838
申请日：2020-11-20
IPC分类号： G01P5/26
摘要： An air data system includes a laser emitter, a laser receiver, and an electronics module. The electronics module includes a processor and computer-readable memory encoded with instructions that, when executed by the processor, cause the laser to emit a coherent light pulse into a target volume locating within an exhaust flow aft of an aircraft. The laser receiver detects backscatter produced by the coherent light pulse interacting with the aft target volume, and the electronics module determines an air data parameter based on the backscatter and at least one of an engine parameter indicative of an engine condition of the aircraft and an aircraft parameter indicative of a state of the aircraft before outputting the air data parameter to a consuming system of the aircraft.
-
公开(公告)号：US11287508B2
公开(公告)日：2022-03-29
申请号：US15970369
申请日：2018-05-03
摘要： Systems and methods are provided for sensing acoustic signals using a floating base vector sensor. A vector sensor according to an embodiment of the present disclosure can be used to detect and characterize low frequency sound wave(s) in a viscous medium (e.g., air, water, etc.) by detecting a periodic motion of the media particles associated with the sound wave(s). The orientation of the particle velocity deduced from such measurements can provide information regarding the wave vector of the sound wave(s), can define the direction of arrival (DOA) for the acoustic signal, and can assist locating the source of the sound of interest.
-
-
-
-
-
-
-
-
-
搜索结果
489 条记录 (耗时 0.023 秒)
