Southwest Jiaotong University

Sichuan University

Chengdu University of Technology

Chengdu University

Jun Zheng

Zigang Deng

Hongfu Shi

Jianfeng Liu

Lu Wang

Le Liang

Huan Huang

Huining Xu

Jianliang Pei

Chunping Wang

Xin Liu

Kaiwen Li

Hao Lu

Yuqing Xiang

Long Kou

Yanxing Cheng

Chenling Xian

Peng Pang

Wenxi Fu

Jianhui Deng

Xiaozhang Lei

Weihua Zhang

Jing Li

Dongjie Xue

Qiangxing Zhang

Jianbo Wu

Qiwen Ma

Yan Wan

Mingming Li

Sanchun Nie

Xueli Li

Dingding Wu

Ting Cao

Junzhi Liu

Yuhang Yuan

Hongbo Liu

Chuhao Chen

Shaolei Sun

Yanzhi Liu

Zhihao Ke

Yihao Chen

Yixing Du

Zihan Wang

Boyi Zhao

Zhiyuan Shi

Jianghua Zhang

Jinhang Li

Yongfu Yang

Qiao Qiu

Zhaoyuan Xu

Ziheng Huang

An equipment for simulating high-speed magnetic levitation operation includes a wheel, a driving mechanism, a first test guideway, a second test guideway, a first test object and a second test object. The wheel includes a rim and a hub arranged at a middle of the rim. The driving mechanism is configured to drive the wheel to rotate. The first test guideway and the second test guideway are arranged on an inner wall of the rim, and are respectively arranged on two sides of the hub. The first test object is arranged in the first test guideway, and the second test object is arranged in the second test guideway.

Equipment for simulating high-speed magnetic levitation operation

This application relates to simulation equipment, and more particularly to an apparatus and method for simulating a line running state of magnetic levitation. The apparatus includes a levitation-guidance mechanism, a moving mechanism and a magnetic guideway fluctuation simulated mechanism. The levitation-guidance mechanism is configured to detect a force on a single Dewar of a maglev train to be simulated. The moving mechanism is configured to move the levitation-guidance mechanism. The magnetic guideway fluctuation simulated mechanism is arranged below the levitation-guidance mechanism, and is configured to apply a variable force to the levitation-guidance mechanism. The variable force is configured to simulate a constantly-variable electromagnetic force applied to the levitation-guidance mechanism by a real track.

Apparatus and method for simulating line running state of magnetic levitation (maglev)

A method for detecting temperature rise inside a superconducting levitation device based on deep learning is provided. An initial vibration acceleration information, an initial temperature rise information, and a vibration acceleration detection information are obtained. Feature extraction is performed on the initial vibration acceleration information to obtain a high-frequency feature parameter set and a low-frequency feature parameter set. Wavelet band energy calculation is performed for the high-frequency feature parameter set and the low-frequency feature parameter set to obtain a wavelet band energy information. The wavelet band energy information and the initial temperature rise information are input into a preset deep learning network for training to obtain an internal temperature rise detection model of the superconducting levitation device. The vibration acceleration detection information is input into the internal temperature rise detection model to obtain an internal temperature rise prediction information to reflect real-time temperature rise of the superconductor.

Method and device for detecting temperature rise inside superconducting levitation device based on deep learning

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.

Cryostat device for superconducting magnetic levitation train and operation method thereof

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.

Fault detection device and method for superconducting electrodynamic magnetic levitation (maglev) track

A vehicle running system based on rail transport, including a track, a framework, two levitation devices and a running device. The track is provided with a slot, in which the framework is provided. The levitation devices are provided between the track and the framework, and a top surface of the levitation device is fixedly connected to a bottom surface of the framework through a suspension structure. The running device includes two conductor plates and two running structures. The conductor plates are fixedly arranged on the inner wall of the slot, and are corresponding to the running structures. The reluctance force of magnetic wheels is converted into a driving force to drive maglev vehicles, and the levitation force is converted into a guiding force to realize the self-stabilization of vehicle guidance. A vehicle running method based on this system is also provided.

Vehicle running system and method based on rail transport

A levitation, propulsion and guidance integrated magnetic levitation system and an improvement method of levitation and guidance. The system includes a maglev train and a maglev track. The maglev train is provided with a permanent magnet array. The maglev track is provided with a driving device and a levitation driving device in sequence along a running direction of the maglev train. An iron plate is arranged in the middle of the maglev track. The driving device accelerates the maglev train from 0 to take-off velocity. The levitation driving device provides a driving force and a levitation force for the maglev train. The iron plate enables the centered running of the maglev train.

Levitation, propulsion and guidance integrated magnetic levitation system and improvement method of guidance and levitation

An oil-gas-water three-phase automatic metering device and method includes a liquid inlet pipe, a pump body, a degassing assembly, a water inlet assembly, first and second liquid storage pipes, a weighing assembly, and a control unit. The liquid inlet pipe, degassing assembly, one end of the first liquid storage pipe and one end of the second liquid storage pipe are connected to four valve ports of a first changeover valve, respectively. The water inlet assembly, one end of the pump body, the other end of the first liquid storage pipe, and the other end of the second liquid storage pipe are connected to four valve ports of a second changeover valve, respectively. The degassing assembly, the water inlet assembly and the other end of the pump body are in communication with the weighing assembly, and the pump body, degassing assembly and weighing assembly are communicatively connected to the control unit.

Oil-gas-water three-phase automatic metering device and method

A permanent magnet electrodynamic suspension system includes a conductor track and a suspension and guidance device. The conductor track is disposed on a roadbed, and the suspension and guidance device is disposed above the conductor track. The suspension and guidance device includes a first permanent magnet array and a second permanent magnet array. The first permanent magnet array and the second permanent magnet array are the same in the magnetization direction arrangement. The first permanent magnet array and the second permanent magnet array are arranged perpendicular to each other. A guidance method for the permanent magnet electrodynamic suspension system is further provided.

Permanent magnet electrodynamic suspension system and guidance method therefor

A magnetic wheel driving device and a driving method using the same. The magnetic wheel driving device includes a vehicle body, a guide rail system, at least two magnetic wheel systems and a power system. The guide rail system includes two conductor plates, respectively arranged at two sides of the vehicle body. The at least two magnetic wheel systems are symmetrically arranged at two side walls of the vehicle body. A gap is provided between each magnetic wheel system and the corresponding conductor plate. The power system is configured to drive the at least two magnetic wheel systems to rotate.

Magnetic wheel driving device and driving method using same

A method for diagnosing and predicting operation conditions of large-scale equipment based on feature fusion and conversion, including: collecting a vibration signal of each operating condition of the equipment, and establishing an original vibration acceleration data set of the vibration signal; performing noise reduction on the original vibration acceleration data set, and calculating a time domain parameter; performing EMD on a de-noised vibration acceleration and calculating a frequency domain parameter; constructing a training sample data set through the time domain parameter and the frequency domain parameter; establishing a GBDT model, and inputting the training sample data set into the GBDT model; extracting a leaf node number set from a trained GBDT model; performing one-hot encoding on the leaf node number set to obtain a sparse matrix; and inputting the sparse matrix into a factorization machine to obtain a prediction result.

Method for diagnosing and predicting operation conditions of large-scale equipment based on feature fusion and conversion

A superconducting magnetic levitation train includes a frame, an arm, a first support member, a Dewar, a permanent magnet track, an iron core, a coil, a DC power supply system, and a second support member. the arm is arranged on a bottom of the frame; the Dewarwith bulk superconductors or superconducting magnets inside is arranged on the bottom of the frame; a bottom of the first support member and the second support member is fixedly arranged on a ground; the permanent magnet track is arranged on the first support member; the iron core is arranged on the second support member; the coil is sleeved on the iron core; and levitation, guidance and propulsion integrated superconducting magnetic levitation train further comprises a direct current (DC) power supply system to supply power to the coil.

Levitation, guidance and propulsion integrated superconducting magnetic levitation train

The present invention discloses a superconducting bulk cooling apparatus and cooling method for a high-temperature superconducting magnetic levitation vehicle. The superconducting bulk cooling apparatus for the high-temperature superconducting magnetic levitation vehicle includes a refrigerating machine, a vacuum box and a Dewar tank. A condensing tank is arranged in the vacuum box, and the condensing tank is communicated with the Dewar tank through a nitrogen siphon pipe and a liquid nitrogen return pipe; a heat exchanger connected with the refrigerating machine is arranged in the condensing tank; and a flexible isolation pipe for thermally insulating and isolating the nitrogen siphon pipe and the liquid nitrogen return pipe is connected between the vacuum box and the Dewar tank. The present invention pumps the phase-change nitrogen out of the Dewar tank through a siphoning effect, so that the immersion cooling of high-temperature superconducting bulks is separated from the re-condensation of the nitrogen.

Superconducting bulk cooling apparatus and cooling method for high-temperature superconducting magnetic levitation vehicle

A tempo-spatial evolution test system for rock breaking in deep and complex environment includes an acoustic emission sensor assembly and an acoustic emission amplifier assembly that are arranged on a rock mechanics test system. A triaxial cavity coupling bracket is arranged on an outer wall of the triaxial cavity and between two sets of acoustic emission sensor assemblies. The triaxial cavity coupling bracket includes a plate-shaped bracket, two sickle-shaped brackets, and at least three bracket bolts, which can be tightly wrapped on the outer wall of the triaxial cavity. A lateral side of the plate-shaped bracket vertically fixes two guide columns. The acoustic emission amplifier assembly is arranged between the two guide columns and is located above the plate-shaped bracket, and the acoustic emission amplifier assembly is connected to the acoustic emission sensor assembly through a signal line.

Tempo-spatial evolution test system for rock breaking in deep and complex environment

A vibration test bench for electrodynamic-suspension magnetic levitation trains and a testing method using the same. The vibration test bench includes an adjustable track mounting surface, a track base, a guiding track and a simulated levitation device. The track base includes a first track base and a second track base. The first track base and the second track base are respectively provided at two sides of the adjustable track mounting surface. The guiding track is arranged at a bottom of the track base and can be embedded in the T-shaped bolt mounting grooves on the adjustable track mounting surface to move. The simulated levitation device is arranged on the track base and is configured to levitate the magnetic levitation train between the first track base and the second track base.

Vibration test bench for electrodynamic-suspension magnetic levitation (maglev) trains and testing method using same

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Chengdu, China

Jun Zheng