公开(公告)号：US12296869B2

公开(公告)日：2025-05-13

申请号：US18052794

申请日：2022-11-04

Applicant: Southwest Jiaotong University

Inventor： Zefeng Wen ,  Xiaolong Liu ,  Xinbiao Xiao ,  Shulin Liang

IPC: B61L23/04 ,  B61K9/10 ,  G01N29/265 ,  G06F18/214 ,  G06N20/10

Abstract: The present disclosure discloses a rail corrugation recognition method and apparatus based on a support vector machine, a device, and a medium. The method includes: obtaining wheel-rail noise signals in different time periods, and obtaining wheel-rail noise time domain information; dividing the wheel-rail noise time domain information into segmented wheel-rail noise time domain information corresponding to each of the different time periods; preprocessing each piece of segmented wheel-rail noise time domain information, and extracting a time domain statistical characteristic quantity and frequency domain eigenmode energy of each piece of segmented wheel-rail noise time domain information, to obtain a multi-dimensional wheel-rail noise characteristic vector; constructing a rail corrugation state recognition model based on a support vector machine, and training the rail corrugation state recognition model; and recognizing to-be-recognized wheel-rail noise data by using the rail corrugation state recognition model based on a support vector machine, to obtain a rail corrugation state.

公开(公告)号：US12202352B2

公开(公告)日：2025-01-21

申请号：US18768309

申请日：2024-07-10

Applicant: SOUTHWEST JIAOTONG UNIVERSITY

Inventor： Zigang Deng ,  Chenling Xian ,  Yongfu Yang ,  Xueli Li ,  Jun Zheng

IPC: B61B13/08 ,  B60L13/04 ,  F25D19/00

Abstract: A cryostat device for a superconducting magnetic levitation train includes a conduction assembly, a support assembly and a refrigeration assembly. The conduction assembly includes a conduction shell, a copper box arranged in the conduction shell, and a thermally-conductive support rod assembly. A top of the thermally-conductive support rod assembly is connected with a bottom of the copper box. A bottom of the thermally-conductive support rod assembly is connected with a bottom wall of the conduction shell. A top of the copper box is provided with a superconducting bulk accommodating cavity. The bottom of the copper box is provided with a cooling energy connecting end. A top of the support assembly is configured to support the conduction assembly. A bottom of the support assembly is connected with a bogie chassis. The refrigeration assembly is provided with a cooling energy input end connected with the cooling energy connecting end.

公开(公告)号：US12187328B2

公开(公告)日：2025-01-07

申请号：US18759788

申请日：2024-06-28

Applicant: Southwest Jiaotong University

Inventor： Tao Zhu ,  Jingke Zhang ,  Shoune Xiao ,  Guangwu Yang ,  Bing Yang ,  Mingmeng Wang ,  Dongdong Chen

IPC: B61G11/12

Abstract: A guide-type anti-climbing energy-absorbing device based on hydraulic shearing includes an energy-absorbing tube, an anti-climbing portion, a first connecting portion, a plurality of partition plates, and two guide plates. The anti-climbing portion and the first connecting portion are respectively provided at two ends of the energy-absorbing tube. The partition plates are sequentially arranged inside the energy-absorbing tube along an axial direction to divide the interior of the energy-absorbing tube into a plurality of first energy-absorbing cavities, each filled with a first honeycomb body. The two guide plates are symmetrically arranged in the energy-absorbing tube along a vertical direction of the energy-absorbing tube. Each guide plate is arranged obliquely and includes a connecting end connected to the anti-climbing portion and a free end passing through the partition plates in sequence to extend outside the first connecting portion.

公开(公告)号：US20240367700A1

公开(公告)日：2024-11-07

申请号：US18777170

申请日：2024-07-18

Applicant: SOUTHWEST JIAOTONG UNIVERSITY

Inventor： Jun ZHENG ,  Mingming LI ,  Sanchun NIE ,  Hao LU

IPC: B61K9/08 ,  B61B13/08 ,  G01R1/16 ,  G01R29/08 ,  G01R33/038

Abstract: A fault detection device for a superconducting electrodynamic maglev track includes a frame system and a detection system. The frame system is provided between two sidewall discrete figure-8-shaped coil tracks, and is provided with a signal processing device. The detection system is provided on each side of the frame system, and includes a lifting device and a clamping device. The lifting device is configured to adjust a vertical height of the clamping device. The clamping device is provided at an outer side of the lifting device, and is provided with a first connection portion and a second connection portion, which are respectively connected to a permanent magnet array and a receiving coil. The second connection portion is provided at periphery of the first connection portion. The receiving coil is electrically connected to the signal processing device. A fault detection method is further provided.

公开(公告)号：US20240359714A1

公开(公告)日：2024-10-31

申请号：US18768309

申请日：2024-07-10

Applicant: SOUTHWEST JIAOTONG UNIVERSITY

Inventor： Zigang DENG ,  Chenling XIAN ,  Yongfu YANG ,  Xueli LI ,  Jun ZHENG

IPC: B61D27/00 ,  F25D19/00

CPC classification number: B61D27/0072 ,  F25D19/006

Abstract: A cryostat device for a superconducting magnetic levitation train includes a conduction assembly, a support assembly and a refrigeration assembly. The conduction assembly includes a conduction shell, a copper box arranged in the conduction shell, and a thermally-conductive support rod assembly. A top of the thermally-conductive support rod assembly is connected with a bottom of the copper box. A bottom of the thermally-conductive support rod assembly is connected with a bottom wall of the conduction shell. A top of the copper box is provided with a superconducting bulk accommodating cavity. The bottom of the copper box is provided with a cooling energy connecting end. A top of the support assembly is configured to support the conduction assembly. A bottom of the support assembly is connected with a bogie chassis. The refrigeration assembly is provided with a cooling energy input end connected with the cooling energy connecting end.

公开(公告)号：US20240359566A1

公开(公告)日：2024-10-31

申请号：US18768201

申请日：2024-07-10

Applicant: SOUTHWEST JIAOTONG UNIVERSITY

Inventor： Zigang DENG ,  Zhentao DING ,  Maoru CHI ,  Mingming LI ,  Sanchun NIE ,  Yadong MA ,  Kaiwen LI

IPC: B60L13/10 ,  B60L13/04 ,  H02K7/08 ,  H02K21/24 ,  H02P21/14 ,  H02P21/18 ,  H02P21/22 ,  H02P27/12

CPC classification number: B60L13/10 ,  B60L13/04 ,  H02K7/083 ,  H02K21/24 ,  H02P21/141 ,  H02P21/18 ,  H02P21/22 ,  H02P27/12 ,  H02P2207/05

Abstract: A rotary permanent magnet electrodynamic suspension device includes drive systems, a suspension system, an isolation layer. The drive systems are symmetrically provided in an axial direction of the suspension system. The isolation layer is provided between the suspension system and each drive system. The suspension system includes a magnetic wheel, a non-magnetic conductor and a support. The non-magnetic conductor has electromagnetic induction with the magnetic wheel. The support and the magnetic wheel are both ring-shaped, and the magnetic wheel is sleeved on an outer circumference of the support. The drive systems are configured to drive the magnetic wheel to rotate through electromagnetic induction. The magnetic wheel includes an annular array of permanent magnets to form four pole pairs based on radial magnetization and tangential magnetization. A permanent magnet electrodynamic suspension using the device is also provided.

公开(公告)号：US20240321111A1

公开(公告)日：2024-09-26

申请号：US18679268

申请日：2024-05-30

Applicant: SOUTHWEST JIAOTONG UNIVERSITY

Inventor： Jian GUO

IPC: G08G3/02

CPC classification number: 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.

公开(公告)号：US20240253122A1

公开(公告)日：2024-08-01

申请号：US18630802

申请日：2024-04-09

Applicant: SOUTHWEST JIAOTONG UNIVERSITY

Inventor： Yi XU ,  Chengyang ZHANG ,  Siyi HE ,  Hui CHEN

IPC: B22F9/14 ,  C22C1/02 ,  C22C14/00 ,  C22F1/18

CPC classification number: B22F9/14 ,  C22C1/02 ,  C22C14/00 ,  C22F1/183 ,  B22F2202/13 ,  B22F2301/205 ,  B22F2998/10 ,  B22F2999/00

Abstract: A preparation method of Yttrium oxide dispersed and strengthened titanium alloy powders. The method includes following steps: mixing alloying elements according to alloy element ratios of: 0.1 wt % to 1.0 wt % Y, 5.5 wt % to 6.8 wt % Al, 3.5 wt % to 4.5 wt % V, Ti as balance, preparing alloy ingots by vacuum melting process, and performing forging and rolling process; performing mechanical treatment for forged and rolled alloy ingots, to obtain alloy rods that meet size requirement of plasma rotating electrode process; preparing titanium alloy powders based on alloy rods by the plasma rotating electrode process; preparing parameters are: rotating speed of the alloy rods is 25000 r/min to 35000 r/min, a feeding speed of the alloy rods is 1.0 mm/s to 2.0 mm/s, power of the plasma gun is 60 kw to 140 kw, a temperature of the inert gas is 200° ° C. to 400° C., oxygen content of atomization chamber not greater than 100 ppm.

公开(公告)号：US11971326B2

公开(公告)日：2024-04-30

申请号：US18483481

申请日：2023-10-09

Applicant: Southwest Jiaotong University

Inventor： Weihua Zhang ,  Zigang Deng ,  Haiquan Bi ,  Wenxiang Zhou ,  Jun Guo ,  Zhigen Xu ,  Yinchuan Li ,  Le Liang

IPC: G01M17/08 ,  B61B13/08 ,  B61B13/10 ,  B61B13/12 ,  B61C15/04

CPC classification number: G01M17/08 ,  B61B13/08 ,  B61B13/10 ,  B61B13/122 ,  B61C15/045

Abstract: A dynamic simulation test platform for ultra-high-speed evacuated tube magnetic levitation (maglev) transportation includes an evacuated tube having a transition section and a vacuum section, a vacuum maintaining system, a motor supporting platform, and a model train. One end of the evacuated tube is provided with a first isolation door, and the other end is closed. A second isolation door is provided inside the evacuated tube. The vacuum maintaining system is connected to the transition section and the vacuum section. The motor supporting platform is provided in the evacuated tube and extends outside the transition section. The motor supporting platform is provided with a stator winding and a permanent-magnet track. A mover and a cryogenic dewar are provided at a bottom of the model train. The cryogenic dewar is provided with a superconducting bulk. A test method using the test platform is further provided.

公开(公告)号：US11964305B2

公开(公告)日：2024-04-23

申请号：US18504885

申请日：2023-11-08

Applicant: LAOKEN MEDICAL TECHNOLOGY CO., LTD. ,  SOUTHWEST JIAOTONG UNIVERSITY

Inventor： Xia Liu ,  Jiangxiong Luo ,  Xianghui Chang ,  Qijun Liu ,  Junchuan Zhang ,  Cong Zhang ,  Miao Zhang ,  Jun Liu ,  Yong Liu ,  Fuping Zhou

IPC: B08B13/00

CPC classification number: B08B13/00

Abstract: An automatic transport device for cleaning machines includes a transport base. A lifting-lowering assembly and a tray are provided on the transport base. The tray is connected to the transport base through the lifting-lowering assembly, and can be driven by the lifting-lowering assembly to reciprocate in a height direction. A top surface of the tray is provided with a translation assembly for transferring the shelf to the transport platform. A first mounting cavity is provided at each of front and rear ends of the tray. The translation assembly is connected to a side wall of the first mounting cavity. A second mounting cavity is provided at each of right and left ends of the tray. The second mounting cavity is provided with a limiting assembly, a lifting-lowering sensing assembly and a distance sensing assembly. An interactive system is provided in the transport base.