-
111.发明申请公开(公告)号：US20210348345A1
公开(公告)日：2021-11-11
申请号：US17009783
申请日：2020-09-02
Applicant: Southwest Jiaotong University
Inventor： Zhixiang YU , Liru LUO , Yuntao JIN , Liping GUO , Hu XU , Xin QI , Lei ZHAO , Shichun ZHAO
Abstract: An expandable modular energy-dissipation protection net unit group includes support columns each provided at each of two ends of each support column with a first horizontal longitudinal rotation reversing device on the left side, a second horizontal longitudinal rotation reversing device on the right side and a transverse rotation reversing device on the bottom; a transverse endless support rope, a longitudinal endless support rope and connectors. The transverse endless support rope is wound on the transverse rotation reversing device. The longitudinal endless support rope is wound on the first horizontal longitudinal rotation reversing device and the second horizontal longitudinal rotation reversing device adjacent. A metal net panel is tied by the plurality of connecting members and hung on the transverse endless support rope and the longitudinal endless support rope.
-
公开(公告)号：US20200376557A1
公开(公告)日：2020-12-03
申请号：US16883234
申请日：2020-05-26
Applicant: Southwest Jiaotong University
Inventor： Guodong CUI , Yuxuan LIU , Chengsong ZHANG , Yifei CHEN , Qin XU
Abstract: The disclosure provides a method of making an iron matrix composite. A Fe—Ni—P composite powder having a particle size of one to two micrometers and a Fe—N powder having a particle size of 100 to 250 nanometers are used as the raw material. The size and axial displacement of pressing heads of a graphite mold are controlled to realize the control of the porosity of porous iron. The composite produced comprises two surface layers of a Fe—Ni—P alloy and an intermediate layer of porous iron having a porosity of 14 to 39%. The method enables a reduced weight of the Fe—Ni—P alloy and enables shock absorption and damping properties to be imparted to the composite. In addition, an optional subsequent deep cryogenic treatment allows the Fe—Ni—P alloy to be subjected to phase transition from a metastable gamma-phase to an alpha-phase, thereby substantially improving the hardness and strength thereof.
-
公开(公告)号：US20200346675A1
公开(公告)日：2020-11-05
申请号：US16739037
申请日：2020-01-09
Applicant: SOUTHWEST JIAOTONG UNIVERSITY
Inventor： Zeqiang ZHANG , Lixia ZHU , Silu LIU , Ying ZHANG , Yanqing ZENG
Abstract: Disclosed is a method for arranging parallel maintenance lines for railway wagons, including: (1) obtaining design information of the parallel maintenance lines; (2) initially designing the parallel maintenance lines; where the maintenance lines comprise a disassembly line and an assembly line parallel to each other, and the disassembly line and the assembly line are connected through a track; (3) establishing a multi-objective mathematical model for solving a parallel maintenance line balancing problem, where the multi-objective mathematical model comprises a first model for minimizing the number of workstations, a second model for minimizing an idle time of the workstations and a third model for minimizing the number of maintenance resources; and (4) obtaining a feasible solution using an intelligent optimization algorithm.
-
公开(公告)号：US20170076858A1
公开(公告)日：2017-03-16
申请号：US15125531
申请日：2015-04-20
Applicant: CHINA RAILWAY CORPORATION , SOUTHWEST JIAOTONG UNIVERSITY , CHANGZHOU PACIFIC ELECTRIC POWER EQUIPMENT GROUP CO., LTD.
Inventor： Shibin GAO , Baoguo WANG , Zhiqiang WU , Mindong GAO
CPC classification number: H01F37/005 , H01F17/02 , H01F27/08 , H01F27/29 , H01F29/00
Abstract: A rolled iron core traction transformer, comprising an iron core (1); the iron core (1) is formed by splicing two symmetrical annealed iron-core closed single frames (1-1); each iron-core closed single frame (1-1) is formed by sequentially coiling continuous silicon steel sheets; the iron-core closed single frame (1-1) has two iron core column single bodies (1-1-1) having approximately semicircular cross sections; the iron core (1) has two iron core columns (1-2) thereon spliced by the iron core column single bodies (1-1-1) and having approximately circular cross sections; each iron core column (1-2) is sequentially provided with a low-voltage T winding (6), a low-voltage F winding (5) and a high-voltage winding (4) thereon from inside to outside; two sides of each high-voltage winding (4) are respectively provided with a first tapping area and a second tapping area; the first tapping area is provided with low-voltage side high-voltage tapping outgoing lines (16); the second lapping area is provided with high-voltage side high-voltage tapping outgoing lines (18); two low-voltage side high-voltage tapping outgoing lines (16) are connected together via a no-load voltage regulation switch (9); and two high-voltage side high-voltage tapping outgoing lines (18) are connected together via another no-load voltage regulation switch (9). The transformer reduces no-load loss, has a small no-load current, low noise and strong anti-short circuit capability, reduces the electrodynamic force generated by a sudden short circuit, and improves the short circuit tolerance capability of the transformer.
Abstract translation: 一种轧制铁芯牵引变压器，包括铁芯（1）; 铁心（1）通过拼接两个对称退火的铁芯封闭单架（1-1）形成; 每个铁芯封闭单架（1-1）通过顺序卷绕连续的硅钢片形成; 铁芯封闭单架（1-1）具有两个具有大致半圆形横截面的铁心柱单体（1-1-1）; 铁芯（1）具有两个铁芯柱（1-2），其上由铁芯柱单体（1-1-1）拼接并具有大致圆形横截面; 每个铁芯柱（1-2）从内向外依次设置有低压T形绕组（6），低压F绕组（5）和高压绕组（4）; 每个高压绕组（4）的两侧分别设有第一攻丝区域和第二攻丝区域; 第一分接区设有低压侧高压抽头出线（16）; 第二研磨区域设有高压侧高压抽出出线（18）; 两个低压侧高压抽头出线（16）通过空载电压调节开关（9）连接在一起; 和两个高压侧高压抽头输出线（18）通过另一个空载电压调节开关（9）连接在一起。 变压器减小空载损耗，空载电流小，噪声小，抗短路能力强，降低了突发短路产生的电动势，提高了变压器的短路容限能力。
-
公开(公告)号：US12282074B1
公开(公告)日：2025-04-22
申请号：US18838852
申请日：2024-04-25
Applicant: Southwest Jiaotong University
Abstract: The present invention relates to the technical field of maglev transportation, specifically revealing a method and apparatus for measuring magnetic field intensity in high-temperature superconducting maglev transportation systems. The method includes: Establishing the top surface of the permanent magnet guideway (PMG) as the reference datum for magnetic field intensity measurements; developing a multi-point chord measurement system with parameters including system sampling interval, system order, and chord measurement configuration; computing intermediate chord values; constructing an inversion model incorporating the least squares method and employing this model to derive the vertical displacement of the reference chord baseline; determining gap sensor locations and deploying an array of Hall effect sensors along the direction of magnetic field intensity measurement; adjusting the reference datum position; and calculating the magnetic field intensity distribution above the reference datum using interpolation techniques based on the Hall effect sensor array measurements.
-
Patent Agency Ranking
公开(公告)号：US12255056B2
公开(公告)日：2025-03-18
申请号：US18759759
申请日：2024-06-28
Applicant: Southwest Jiaotong University
Inventor： Yuhong Xu , Danni Wu , Yucai Li , Haifeng Liu , Jun Cheng , Junfeng Shen , Hai Liu , Xianqu Wang , Jie Huang , Xin Zhang , Jun Hu , Wei Li
Abstract: A diagnostic method and system for measuring potential and electric field of plasma are provided. According to operation parameters of a magnetic confinement fusion device and relevant parameter data of a plurality of candidate particle elements, signal-noise ratios are calculated. to select a neutral beam particle element. Beam trajectories varying in incident velocity, incident angle and sampling area are obtained by iterative calculation, and a preset parameter which enables the beam trajectories to pass through an entrance slit of an analyzer is obtained. A neutral beam that meets the preset parameter is injected into the plasma. An energy of the primary beam generated by collision ionization in a sampling area is measured, and potential of the sampling area is obtained according to law of conservation of energy. Sampling areas are detected to obtain potential spatial distribution of the plasma and a radial electric field, and the diagnostic is finished.
-
公开(公告)号：US20250086355A1
公开(公告)日：2025-03-13
申请号：US18677996
申请日：2024-05-30
Applicant: Southwest Jiaotong University
Inventor： Lin JING , Shaodong ZHENG , Kai LIU , Xiongfei ZHOU , Kaiyun WANG
IPC: G06F30/23 , G06F119/14
Abstract: A train crash energy management (CEM) optimization method based on machine learning is provided. The method includes: establishing a finite element model that is for an eight-marshalling train crash and considers a train energy absorption subsystem and a wheel-rail rolling contact behavior; establishing a machine learning database for train crash energy absorption; constructing a machine learning prediction model for the train crash energy absorption; and performing multi-objective optimization on CEM of a train based on machine learning.
-
公开(公告)号：US12186770B2
公开(公告)日：2025-01-07
申请号：US18757491
申请日：2024-06-27
Applicant: SOUTHWEST JIAOTONG UNIVERSITY
Inventor： Xianghui Chang , Yajing Cui , Qijun Liu , Xia Liu , Weidong Qiu , Yan Yan , Wenguang Li
Abstract: A disinfection robot, including a top plate, a bottom plate and a swinging mechanism. The top plate is located above the bottom plate. The swinging mechanism is located between the top plate and the bottom plate, and includes a swinging arm, a hinge shaft, a swinging gear, two swinging units and a driving unit. The swinging arm is hingedly connected to the bottom plate through the hinge shaft. The two swinging units are symmetrically arranged on both sides of the swinging gear. Each of the two swinging units includes a swinging shaft, an incomplete gear and a linear driver. The driving unit is configured to simultaneously drive swinging shafts of the two swinging units to rotate in opposite directions. The disinfection robot can adjust a swing amplitude of the swinging arm according to a size of a disinfection site.
-
公开(公告)号：US20240421239A1
公开(公告)日：2024-12-19
申请号：US18743136
申请日：2024-06-14
Applicant: Southwest Jiaotong University
Inventor： Xiaojun Xie , Chao Wei , Xihua Zou , Wei Pan , Lianshan Yan
IPC: H01L31/0304 , H01L31/0232 , H01L31/18
Abstract: An ultra-broadband waveguide-coupled photodetector on a TFLN platform is provided. Specifically, the waveguide-coupled photodetector on a TFLN-InP heterogeneous integration platform is prepared. An epitaxial layer is grown on a semi-insulating InP substrate by metal-organic chemical vapor deposition, and the epitaxial layer includes a n-contact layer, a sacrificial layer, a drift layer, a cliff layer, a quaternary compound layer, an absorption layer and a p-contact layer sequentially arranged in that order. The n-contact layer and the p-contact layer are heavily doped with InGaAs and InGaAsP, respectively. The absorption layer includes a depletion absorption layer with a thickness of 20 nm and a graded doping absorption layer with a thickness of 100 nm. The photodetector simultaneously improves bandwidth and responsivity, and can be compatible with mature silicon processes and applied to four-level pulse amplitude modulation data receiving systems.
-
120.发明授权公开(公告)号：US12154437B2
公开(公告)日：2024-11-26
申请号：US18679268
申请日：2024-05-30
Applicant: SOUTHWEST JIAOTONG UNIVERSITY
Inventor： Jian Guo
IPC: G08G3/02
Abstract: Embodiments of the application provide a position estimation and prediction method for a moving object. The method includes: updating a model parameter of a position prediction model according to a position data sequence of the moving object at a current sampling moment; determining position prediction data at the current sampling moment according to the position data sequence and the position prediction model after the model parameter is updated; determining position estimation data at the current sampling moment according to the position prediction data and the position observation data at the current sampling moment; and determining position prediction data of a next sampling moment according to the position estimation data at the current sampling moment, the position data sequence and the position prediction model after the model parameter is updated, and entering an iteration operation of the next sampling moment.
-
-
-
-
-
-
-
-
-
Search Results
152
records
(took 0.017 seconds)
