公开(公告)号：US20230054246A1

公开(公告)日：2023-02-23

申请号：US17293841

申请日：2020-07-30

Applicant: Beijing Institute Of Technology

Inventor： Weida Wang ,  Chao Yang ,  Jingang Liu ,  Wei Zhang ,  Zhongguo Zhang ,  Changle Xiang

IPC: B60W40/06 ,  B60W40/105

Abstract: The present invention provides an iterative joint estimation method of vehicle mass and road gradient based on MMRLS and SH-STF, which includes the following steps: establishment of a dynamic model considering steering, MMRLS/SH-STF iterative joint estimation algorithm architecture, improved slope estimation algorithm based on SH-STF. It is an iterative joint estimation method of vehicle mass and road slope based on MMRLS and SH-STF, which is designed reasonably, and the slow-variation characteristics of vehicle mass and the time-varying characteristics of road gradient are analyzed. According to the characteristics of gradual change and time change, based on the longitudinal dynamics model of the vehicle and the steering single-track model, the system identification algorithm of multi-model fusion recursive least squares is used to calculate the vehicle mass, and the noise adaptive strong tracking based on extended Kalman filter is used.

公开(公告)号：US20230032498A1

公开(公告)日：2023-02-02

申请号：US17527561

申请日：2021-11-16

Applicant: Beijing Institute of Technology

Inventor： Qing Shi ,  Zihou Wei ,  Tao Sun ,  Huaping Wang ,  Zhe Chen ,  Qiang Huang

IPC: A61M25/00 ,  C12N5/079

Abstract: A frame for constructing nerve tract is provided, including microcatheters, a support, and a shell. The shell is configured to contain a culture medium inside. The microcatheters are configured to culture nerve cells. The multiple microcatheters are suspended and fixed into the shell by the support, the microcatheters are arranged along a direction from one end to the other end of the shell, catheter walls of the microcatheters are provided with through holes, the nerve cells in the microcatheter cannot flow out through the through holes, and the culture medium enters the microcatheter through the through holes. A method for constructing nerve tract based on the frame described is provided, including: filling the nerve cells wrapped with a collagen hydrogel stock solution into the microcatheters, and after the collagen hydrogel stock solution is completely cross-linked, placing the frame loaded with the nerve cells in a culture device for perfusion culture.

公开(公告)号：US11542570B2

公开(公告)日：2023-01-03

申请号：US16878892

申请日：2020-05-20

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Chunguang Xu ,  Dezhi Li ,  Yuren Lu ,  Ruili Jia ,  Peng Yin

IPC: B06B1/06 ,  B06B3/00 ,  C21D10/00

Abstract: The present disclosure provides a device and a method for reducing and homogenizing residual stress during machining in which a workpiece is fixed, such as milling, boring, drilling and planning, with which high-energy acoustic waves are emitted to the workpiece via a tight contact between a plurality of high-energy wave exciters on a bench and a workpiece coated with a coupling medium, and residual stress inside the machined workpiece is reduced and homogenized through elastic wave energy generated in the workpiece by the high-energy acoustic waves. In this way, the purpose of reducing and homogenizing the residual stress while machining is achieved, realizing a stress-free machining, and the deformation of the workpiece during and after machining is minimized.

公开(公告)号：US20220400203A1

公开(公告)日：2022-12-15

申请号：US17726293

申请日：2022-04-21

Applicant: Beijing Institute of Technology

Inventor： Jie CAO ,  Qun HAO ,  Huan CUI ,  Yingqiang ZHANG

IPC: H04N5/232 ,  H04N5/225 ,  G02B5/02

Abstract: Disclosed are an omnidirectional ghost imaging method and an omnidirectional ghost imaging system based on the mechanism of bio-inspired retina-like. According to the application, the logarithmic polar mapping characteristic of the bio-inspired retina-like structure is utilized to generate an annular pattern sequence of the bio-inspired retina-like, and the pattern sequence is utilized to modulate a light source. After being reflected by the target around the curved mirror, the light is projected onto the curved mirror and diffusely reflected. According to the reversible characteristics of the optical path, the light after diffuse reflection is reflected to the original light source by the half mirror and half lens, and the reflected light intensity with target information is received by the bucket detector. The reflected light intensity measurement value with target information is correlated with the annular pattern sequence of bio-inspired retina-like used for modulating the light source.

公开(公告)号：US11497672B2

公开(公告)日：2022-11-15

申请号：US16812278

申请日：2020-03-07

Applicant: Beijing Institute of Technology

Inventor： Liancun Zhang ,  Qiang Huang ,  Wenkang Wang

IPC: A61H3/00

Abstract: The present invention discloses a soft knee exoskeleton driven by a negative-pressure linear actuator, including: an exoskeleton controller, a left leg knee joint soft actuator, a right leg knee joint soft actuator and the like. The soft knee exoskeleton mainly uses a miniature vacuum negative pressure pump as an air pressure power source. A DSP embedded control system performs real-time processing on the data, such as a muscle force, a knee joint angle and a human-machine interaction force, detected by a sensing system, estimates a human-machine cooperation state, and performs real-time control on the switching of the negative pressure flow and an air channel of the miniature vacuum negative pressure pump.

公开(公告)号：US20220311060A1

公开(公告)日：2022-09-29

申请号：US17297345

申请日：2020-09-28

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Wenwei Wang ,  Yiding Li ,  Fenghao Zuo

IPC: H01M10/42 ,  H01M10/0525 ,  H01M10/48 ,  G01R31/3842 ,  G01R31/392

Abstract: The present disclosure relates to a smart battery. The smart battery includes not only a battery shell, layered cells, a positive electrode and a negative electrode included in a conventional battery, but also an embedded multi-source sensor group and an intelligent chip. The smart battery of the present disclosure can detect the temperature and the pressure of the core of the battery and the current of the battery in real time by using the intelligent chip and the embedded multi-source sensor group, thereby realizing a real-time monitoring of the working state and safety state of the battery, and improving a safety and the reliability of the battery on the basis of realizing the self-sensing function of the battery. In addition, according to the smart battery of the present disclosure, the modification to the conventional battery structure by adding the intelligent chip and the embedded multi-source sensor group makes up the gap in research and development, manufacturing and production of the smart battery on the premise of ensuring that the battery volume remains unchanged.

公开(公告)号：US20220296304A1

公开(公告)日：2022-09-22

申请号：US17769885

申请日：2020-10-29

Applicant: Beijing Institute of Technology

Inventor： Duanduan Chen ,  Yilun Zhang ,  Huanming Xu ,  Zhenfeng Li ,  Yuqian Mei ,  Yue Shi

IPC: A61B34/10 ,  G16H10/60

Abstract: A method and apparatus for evaluating aortic dissection surgery, an electronic device, and a storage medium are provided. The method comprises: obtaining a preoperative aortic model of a patient; simulating aortic dissection surgery on the basis of a virtual stent technology and the preoperative aortic model to obtain a postoperative aortic model; obtaining displacement amount of the same blood vessel node between the preoperative aortic model and the preoperative aortic model; and evaluating a surgical risk degree of the patient on the basis of the displacement amount. The occurrence probability of postoperative complications is related to the displacement amount.

公开(公告)号：US20220143835A1

公开(公告)日：2022-05-12

申请号：US17153140

申请日：2021-01-20

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Qing SHI ,  Guanglu JIA ,  Tao SUN ,  Chen CHEN ,  Yi XU ,  Shurui YAN ,  Qiang HUANG

IPC: B25J9/16 ,  G06T1/00 ,  H04N7/18 ,  G06T7/593 ,  B25J13/08 ,  B25J13/00

Abstract: The present disclosure provides a visual-tactile perception apparatus and a small-sized robot. The apparatus includes a visual perception module, a tactile perception module, a control module, and a signal transmission module. The signal transmission module is separately connected to the visual perception module, the tactile perception module, and the control module. The visual perception module is configured to obtain image information of a surrounding environment of the apparatus; the tactile perception module is configured to obtain tactile information of the surrounding environment of the apparatus; the signal transmission module is configured to transmit the image information and the tactile information to the control module; and the control module is configured to generate a control instruction based on the image information and the tactile information, and transmit the control instruction.

公开(公告)号：US20220074836A1

公开(公告)日：2022-03-10

申请号：US17397528

申请日：2021-08-09

Applicant: Beijing Institute of Technology

Inventor： Li JIAO ,  Huiqing GU ,  Xibin WANG ,  Pei YAN ,  Shiqi CHEN ,  Binxing MA ,  Jiabin LIANG

IPC: G01N3/06 ,  G01B11/24

Abstract: The present disclosure relates to a method for determining initiation positions of fretting fatigue cracks. The processed inner circular hole test workpiece is placed on a stage of an optical microscope, wherein the inner hole surface to be measured is perpendicular to the scanning beam direction of the microscope; measurement is performed along the real contact orientation between the inner hole surface of the inner circular hole test workpiece and the pin shaft. From the measured surface morphology and profile image, rectangular target areas with a coverage rate of 75%˜90%, and the amplitude distribution function, surface skewness and surface kurtosis values of the respective surface profiles are extracted from the target areas. By comparing the positive/negative of and the magnitude of the skewness and kurtosis values measured in the target areas, the side where the initiation position of fretting fatigue cracks is located can be determined.

公开(公告)号：US20220074835A1

公开(公告)日：2022-03-10

申请号：US17385206

申请日：2021-07-26

Applicant: Beijing Institute of Technology

Inventor： Daining Fang ,  Zhaoliang Qu ,  Rongqi Zhu ,  Shuo Yang

IPC: G01N3/06 ,  G01N3/18

Abstract: A high-temperature in-situ loaded computed tomography (CT) testing system based on a laboratory X-ray source and a method therefor are provided. A dynamic sealing device is adopted. A pull-up pressure rod and a pull-down pressure rod are allowed to rotate circumferentially and move axially. Meanwhile, a high-temperature furnace is fixed without rotating or moving, such that the high-temperature furnace is flat in an imaging direction to shorten an imaging distance and improve imaging quality. An independent tensile testing machine is utilized to achieve high-load loading. The in-situ measurement of internal deformation and damage information of a specimen under tensile or compressive load in a high-temperature environment is implemented. By taking advantage of the miniaturization design of the high-temperature device, the accuracy of the damage test using the laboratory X-ray source is increased. Tests and researches on the internal damage and failure behavior of the high-temperature materials can be conducted.