公开(公告)号：US20240092702A1

公开(公告)日：2024-03-21

申请号：US18039474

申请日：2021-11-25

申请人： BEIHANG UNIVERSITY

发明人： Shubin Yang ,  Zhiguo Du

IPC分类号： C04B41/53 ,  H01J37/32

CPC分类号： C04B41/5346 ,  H01J37/3244 ,  H01J2237/3341

摘要： Provided are a method and system for preparing a two-dimensional material by means of a gas-phase method. The method comprises a gas-phase etching step: reacting gas having an etching effect with an MAX phase material at a first predetermined temperature, and etching a component A in the MAX phase material to obtain a two-dimensional material containing MX. The method avoids requiring the steps such as repeated cleaning, ultrasonic and centrifugal separation, and drying in preparing MXene in a liquid-phase method, greatly simplifies a preparation process, reduces the preparation cost, can achieve industrial macro preparation of MXene, and lays a foundation for application of MXene in different fields.

公开(公告)号：US20240046454A1

公开(公告)日：2024-02-08

申请号：US18163425

申请日：2023-02-02

申请人： Beijing Tiantan Hospital, Capital Medical University ,  Beihang University

发明人： Zixiao LI ,  Tao LIU ,  Hao LIU ,  Lingling DING ,  Yongjun WANG

IPC分类号： G06T7/00 ,  G06T7/73

CPC分类号： G06T7/0012 ,  G06T7/73 ,  G06T2207/10088 ,  G06T2207/30016

摘要： A method and system for extracting a multi-dimensional disconnection network region of symptom mapping: registering a lesion image to a brain standard space; obtaining diffusion magnetic resonance images and resting-state functional magnetic resonance images of healthy control groups; constructing a structural disconnection weighting network corresponding to lesions using a fiber tracking method according to the lesion image in the brain standard space and the diffusion magnetic resonance images; constructing a functional significant disconnection network corresponding to the lesions using a cross-correlation verification method according to the lesion image in the brain standard space and the resting-state functional magnetic resonance images; and determining the multi-dimensional disconnection network region of the lesions of symptom mapping according to the structural disconnection weighting network and the functional significant disconnection network, where the multi-dimensional disconnection network region of the lesions is configured to locate network mapping of a brain lesion in the brain.

公开(公告)号：US11888346B2

公开(公告)日：2024-01-30

申请号：US17286777

申请日：2020-06-12

申请人： BEIHANG UNIVERSITY

发明人： Tong Wei ,  Zhongwen Shan

IPC分类号： H02K41/06 ,  H02K11/22 ,  H02K1/06 ,  H02K21/12 ,  G06T7/73 ,  B25J19/02 ,  G01B11/26 ,  H04N23/57 ,  H04N23/695 ,  H04N23/90

CPC分类号： H02K41/065 ,  B25J19/023 ,  G01B11/26 ,  G06T7/73 ,  H02K11/22 ,  H04N23/57 ,  H04N23/695 ,  H02K2201/18 ,  H04N23/90

摘要： The present disclosure provides a compact bionic eye device based on a two-degree-of-freedom electromagnetically-driven rotating mechanism, which can be used as a vision sensor of bionic robots such as humanoid robots. The compact bionic eye device includes a rotor, stator cores, windings, an angular displacement camera, a spherical hinge pressing block, a stator connector, a camera, a spherical hinge, a camera connector, a rotor connector and an outer spherical shell. According to the compact bionic eye device of the present disclosure, the rotor is driven to achieve limited rotation with pitching and yawing degrees of freedom by regulating a current of the windings of four stators. By adopting a two-degree-of-freedom of electromagnetically-driven rotating mechanism which is compact in structure, the bionic eye device of the present disclosure can achieve a human eye size, and provides important foundation for practical application of bionic eyes in humanoid robots.

公开(公告)号：US20230375461A1

公开(公告)日：2023-11-23

申请号：US18230670

申请日：2023-08-07

申请人： Beihang University

发明人： Yanyu ZHAO ,  Yubo FAN

IPC分类号： G01N21/17 ,  G01N21/31 ,  G01N33/49

CPC分类号： G01N21/1702 ,  G01N21/3151 ,  G01N33/492 ,  G01N2201/0662 ,  G01N2201/06146

摘要： The embodiments of the present invention disclose a method, system, device and electronic apparatus for measuring concentration of water and lipids components. The method includes acquiring an optical absorption coefficient of a sample to be measured irradiated by a light source of at least two wavelengths, wherein a wavelength of the light source of at least two wavelengths is not greater than 1000 nm; and acquiring an extinction coefficient of water irradiated by the light source of at least two wavelengths and an extinction coefficient of lipids irradiated by the light source of at least two wavelengths; determining a concentration of water in the sample to be measured and a concentration of lipids in the sample to be measured, respectively, based on the optical absorption coefficient of the sample to be measured irradiated by the light source of at least two wavelengths, the extinction coefficient of water irradiated by the light source of at least two wavelengths, and the extinction coefficient of lipids irradiated by the light source of at least two wavelengths.

公开(公告)号：US11815155B2

公开(公告)日：2023-11-14

申请号：US17605685

申请日：2020-08-05

申请人： Beihang University ,  Hangzhou Deti Civil Air Defense Equipment Co., Ltd.

发明人： Wei Cheng ,  Ming Li ,  Junjie Mei ,  Ji Ran ,  Hexiang Zheng ,  Feijie Qian

IPC分类号： F16F7/00

CPC分类号： F16F7/00 ,  F16F2228/06 ,  F16F2232/08

摘要： A zero-stiffness impact isolation device includes a shell, a half-hourglass-shaped boss, a sliding block, a spring, a motion guide assembly, and an inner core. Where the motion guide assembly includes a linear bearing fixed to the shell and the inner core and a corresponding sliding rod, and is divided into a transverse guide assembly and a longitudinal guide assembly. The spring is sleeved outside the sliding rod of the transverse motion guide assembly, and two ends of the spring are in contact with the sliding block and the inner core, respectively. When the device suffers from external impact load, the inner core and the separated object carry out a reciprocating motion, the sliding block is extruded by the half-hourglass-shaped boss to move side to side with respect to the inner core, and the spring provides elastic force to the sliding block in the process.

公开(公告)号：US11802813B2

公开(公告)日：2023-10-31

申请号：US18083440

申请日：2022-12-16

申请人： BEIHANG UNIVERSITY

发明人： Peng Dong ,  Shumiao Zuo ,  Jiadong Sheng ,  Xiangyang Xu ,  Peter Tenberge ,  Yanfang Liu ,  Shuhan Wang ,  Wei Guo ,  Yan Cheng

IPC分类号： G01M13/04 ,  F16H57/08

CPC分类号： G01M13/04 ,  F16H57/082 ,  F16H2057/085

摘要： A device for testing a needle roller bearing of a planet gear set consists of two identical helical planet gear sets, a piston, an end cover, a spindle, and can simulate the actual operating condition of a needle roller bearing of the planet gear set; the rotating speed difference between an inner raceway and an outer raceway of the needle roller bearing is determined by adjusting the rotating speed of a sun gear and a planet carrier; the load on the needle roller bearing includes a centrifugal load and a radial load, and the centrifugal acceleration and the centrifugal load are determined by adjusting the rotating speed of the planet carrier; a method of determining the radial load by adjusting the hydraulic pressure difference of hydraulic chambers at both ends of the piston, generating a tangential force to load the planet gear, and balancing the radial load of the bearing.

公开(公告)号：US20230313686A1

公开(公告)日：2023-10-05

申请号：US17973746

申请日：2022-10-26

申请人： BEIHANG UNIVERSITY

发明人： Xiang LUO ,  Zhe ZHANG ,  Dongdong LIU ,  Zeyu WU

IPC分类号： F01D5/08 ,  H02J50/10

CPC分类号： F01D5/081 ,  H02J50/10

摘要： Disclosed is an aero-engine turbine assembly, including a turbine assembly body and a cooling component. The turbine assembly body is provided with an internal flow passage, and the turbine assembly body includes a turbine rotor disk, a blade end wall and a turbine rotor blade, which are successively fixedly connected with each other. The internal flow passage passes through the turbine rotor disk, the blade end wall and the turbine motor blade, and the internal flow passage is provided with an inlet and an outlet. The cooling component is fixed on the turbine rotor disk, and the cooling component includes an electromagnetic pump system, an expansion joint and a radiator, which are successively communicated with each other. The electromagnetic pump system is communicated with the inlet, to inject liquid metal to into the internal flow passage.

公开(公告)号：US20230311602A1

公开(公告)日：2023-10-05

申请号：US18127692

申请日：2023-03-29

申请人： Beihang University

发明人： Juan CHEN ,  Jingkun WEI ,  Zhaoqin PENG ,  Min YANG ,  Qingzhen ZHANG ,  Changlin WU

IPC分类号： B60G11/10 ,  B25J5/00

CPC分类号： B60G11/10 ,  B25J5/007

摘要： A steering wheel suspension structure of an omnidirectional mobile robot includes a steering wheel connecting ring, a plurality of leaf spring connecting beams and a chassis mounting section. The steering wheel suspension structure is an integrated plate structure. The steering wheel connecting ring is connected with a steering wheel, and the chassis mounting section is connected with a robot chassis. The leaf spring connecting beam is connected with the steering wheel connecting ring and the chassis mounting section, and the leaf spring connecting beam is used as the main component of suspension deformation. The suspension structure is simple, easy to install, light in weight, less in space, and highly integrated with the steering wheel assembly. When the suspension is deformed by the force, it weakens the radial force and only has the displacement and force in the vertical direction, thus ensuring the handling performance of the chassis.

公开(公告)号：US11754520B2

公开(公告)日：2023-09-12

申请号：US17458065

申请日：2021-08-26

申请人： Beihang University

发明人： Jiangtao Sun ,  Xu Bai ,  Lijun Xu ,  Wenbin Tian ,  Yuedong Xie

IPC分类号： G01N27/06 ,  A61B5/0536 ,  A61B5/0265

CPC分类号： G01N27/06 ,  A61B5/0536 ,  A61B5/0265

摘要： A dynamic impedance imaging system includes a dynamic impedance imaging sensor, an impedance detection and flow rate measurement module and an electrical impedance tomography (EIT) instrument. The impedance detection and flow rate measurement module is configured to detect an abnormal particle flowing through the dynamic impedance imaging sensor to obtain a flow rate of the abnormal particle, and generate a synchronous trigger signal. The EIT instrument is configured to inject a sinusoidal excitation current into the dynamic impedance imaging sensor under the trigger of the synchronous trigger signal, perform multi-channel interleaved sampling for the abnormal particle according to the flow rate to acquire multi-channel sampled data, and calibrate the multi-channel sampled data to implement impedance tomography imaging for the abnormal particle.

公开(公告)号：US11727812B2

公开(公告)日：2023-08-15

申请号：US17033785

申请日：2020-09-26

申请人： BEIHANG UNIVERSITY

发明人： Xianbin Cao ,  Wenbo Du ,  Jintong Zhang ,  Haichao An ,  Yumeng Li ,  Xi Zhu

IPC分类号： G08G5/00 ,  G08G5/04 ,  G06Q10/047 ,  G06N7/01 ,  G06N5/01

CPC分类号： G08G5/0034 ,  G06N7/01 ,  G06Q10/047 ,  G08G5/0069 ,  G08G5/045 ,  G06N5/01 ,  G08G5/0039

摘要： A computer-based airplane flight path planning method based on the pigeon-inspired optimization (PIO) algorithm includes steps of establishing an uncertainty prediction model, determining the path to be optimized, and obtaining an optimal path using the PIO algorithm for a flight controller onboard to execute. The PIO algorithm treats a pigeon flock as a scale-free network, applies map and compass operators to the scale-free network, and performs landmark operations to obtain the optimal path. The device that performs the path planning includes an access module for obtaining the regional environment information and a flight controller onboard the airplane. The flight controller includes a building module for setting up the trajectory prediction model including uncertainties; a determining module to determine the trajectories which need optimization; an optimization module, which uses the PIO algorithm to optimize the flight path; and a computer memory module.