A5059650673- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Magnetic Bearings and Levitation Dynamics
- Frequency Control in Power Systems
- Magnetic and transport properties of perovskites and related materials
- Magnetic confinement fusion research
- Tunneling and Rock Mechanics
- Electric Motor Design and Analysis
- Luminescence Properties of Advanced Materials
- Metaheuristic Optimization Algorithms Research
- Glass properties and applications
- Solid State Laser Technologies
- Advanced materials and composites
- Industrial Technology and Control Systems
- Magnetic Properties and Applications
- High Entropy Alloys Studies
- Aluminum Alloys Composites Properties
- Advanced Multi-Objective Optimization Algorithms
- Metallic Glasses and Amorphous Alloys
- Particle accelerators and beam dynamics
- Advanced machining processes and optimization
- Simulation and Modeling Applications
- Magnetic properties of thin films
- Superconductivity in MgB2 and Alloys
- Reinforcement Learning in Robotics
China University of Mining and Technology
2011-2025
Jilin University
2020-2024
Osaka University
2023-2024
Sinopec (China)
2023
China National Chemical Corporation (China)
2023
Huazhong University of Science and Technology
2019-2021
Wuhan National Laboratory for Optoelectronics
2019-2021
Guangzhou Chemistry (China)
2019
Hebei University of Technology
2018
Southwest Jiaotong University
2006-2016
An update high temperature superconducting Maglev measurement system (SCML-02) was successfully developed. The includes liquid nitrogen vessel, cylinder permanent magnet (PM) or PM guideway (PMG), data collection and processing, mechanical drive autocontrol. vessel with superconductors (HTSCs) can be placed above under the PM. This has other characteristics: precision, instant at movement of measured HTSCs specimen, synchronous levitation guidance, in three dimensions one time, relaxation...
Diamond has the highest thermal conductivity among naturally occurring materials and a relatively low coefficient of expansion (CTE), making it promising interconnected material for next-generation semiconductor power devices. In this study, Ag/diamond composite sintering paste was developed. The agglomerated diamond particles were uniformly dispersed in sintered Ag porous structure, increased from 171.4 W/(m∙k) pure to 288 an [email protected]%diamond (2% total weight Ag) specimen....
After the first man-loading high temperature superconducting (HTS) Maglev demonstration had been tested successfully years ago, its future application attracts more and researchers engineers. This paper reviews recent development of HTS system in China. In past seven years, quasi-static forces, dynamic characteristics running performances have studied by three self-developed maglev measurement systems 11-ch vibration apparatus. Some practical problems are considered details for further...
The first man-loading high-temperature superconducting (HTS) Maglev test vehicle in the world was successfully developed on Dec. 31, 2000 Applied Superconductivity Laboratory, Southwest Jiaotong University, China. Heretofore over 24 500 passengers took vehicle, and it has been operating back forth for about 400 km. HTS provides inherent stability both vertical lateral direction, so no control system is needed. only used linear motor driving devices. melt-textured YBaCuO bulk superconductors...
Free vibration of the high temperature superconducting (HTS) Maglev vehicle model has been investigated after an impulse force over permanent magnet guideway. The was used to simulate external disturbances on HTS so as study its characteristics. In experiments, free curves time dependence acceleration and frequency displacement were measured. It found that some damped which seemed decrease exponentially. Applying response dynamic equation model, stiffness damping coefficient evaluated....
Based on the study of static properties high temperature superconducting (HTS) Maglev vehicle, dynamic characteristics and stability are investigated in paper. A vehicle model using 86 bulk Tc superconductors (HTSCs) is made at 1/4 scale first man-loading HTS test vehicle. Dynamic low-speed three directions studied by measuring vibration signals six essential point model. The natural frequency analysed. 30 mm height suggested as a reasonable field cooling (FCH). Lower FCH brings operation...
In order to design high temperature superconducting (HTS) maglev launch system, three NdFeB permanent magnetic guideways (PMGs) are investigated and compared for the better levitation forces guidance forces. The laboratory-scale HTS system was designed developed successfully in Applied Superconductivity Laboratory (ASCLab), Southwest Jiaotong University, China. cooling process of melt-textured YBaCuO bulk superconductors is made a big low tube, which connected with PMG. method merit...
Reinforcement learning has achieved significant success in sequential decision-making problems but exhibits poor adaptability non-stationary environments with unknown dynamics, a challenge particularly pronounced multi-agent scenarios. This study aims to enhance the adaptive capability of systems such volatile environments. We propose novel cooperative Multi-Agent Learning (MARL) algorithm based on MADDPG, termed MACPH, which innovatively incorporates three mechanisms: Composite Experience...
A magnetic levitation technique with high- <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Tc</i> superconductor (HTS) has received significant interest for a wide range of applications after its discovery due to unique inherent stability, which gives fundamental significance evaluate the HTS in both experiment and calculation. To numerically investigate levitation, 3-D model describing electromagnetic property HTS, including anisotropic behavior,...
In order to put the practice of high temperature superconducting (HTS) Maglev vehicle technology into people's life, interaction between superconductor (HTSC) and permanent magnet guideway (PMG) as basic model HTS was carefully investigated enhanced from three essential aspects, i.e., bulk HTSC material, PMG field magnetization. The maglev experiments were performed with kinds materials, two PMGs magnetization methods. It is found that aspects are all very effective improve levitation...
We report a simple, efficient and economical way to enhance the levitation or guidance performance of present high-temperature superconducting (HTS) Maglev systems by exploring anisotropic properties critical current density in a–b plane along c-axis bulk superconductors. In method, laying mode with different directions is designed match magnetic field configuration applied permanent magnet guideway (PMG). Experimental results indicate that more than factor two improvement force achieved...
The dynamic measurement of high temperature superconducting (HTS) magnetic levitation (Maglev) vehicle is a very important and difficult problem. In order to investigate the characteristics behavior HTS Maglev, an Maglev system (SCML-03) was successfully developed in Applied Superconductivity Laboratory (ASCLab) Southwest Jiaotong University, P. R. China. mainly constituted by circular permanent magnet guideway (PMG), liquid nitrogen vessel, data acquisition processing, mechanical drive,...
In this paper, the 3-D model proposed in Part I of study is verified detail on basis a levitation/suspension system composed rectangular single-domain Y-Ba-Cu-O and cylindrical Nd-Fe-B magnet or permanent guideway (PMG) assembled by magnets. The magnetic forces along vertical direction perpendicular transverse parallel to surface PMG (or magnet) were calculated compared well with measured data under displacements. computed results induced current distribution within domain, as field profiles...
Guidance force is calculated when a high-temperature superconductor moves laterally on permanent magnetic guideway. Both the and guideway are infinitely long. The dependence of guidance performance upon both geometrical parameters, such as shape guideway, intrinsic critical current density uniform magnetization studied. results may be helpful to design optimization superconducting magnetically levitated train system.
With strong support from Chinese government bodies such as the National High Technology Research and Development Program of China, Natural Science Foundation China Basic field applied superconductivity in has been developed different areas. Especially fusion application area, first fully-superconducting tokamak, EAST (Experimental Advanced Superconducting Tokamak), successfully constructed commissioned last two years. Based on requirement ITER project, high performance Bi-2223 HTS tape, Nb...
The normal forces of a single sided high temperature superconducting linear synchronous motor (SLSM) have been investigated at 77 K. SLSM consisted coil made YBCO coated conductor as the excitation system and conventional three phase copper wound armature stator with gap 10 mm in between. Alternating current up to 7.5 A 10.5 Hz was applied direct 40 system. Studies were also on addition iron components such core back plate force adding resulting are discussed. With minimal compared large...
A four pole superconducting excitation system that was part of a linear synchronous motor (LSM) system, fabricated and its thrust normal forces studied experimentally. Four cases were investigated, air-cored, with ferromagnetic (FM) back plate, an FM core, both plate core. With total only 15 m YBCO coated conductor in the form coils as output up to 95 N while operating at 77 K magnetic gap 10 mm obtained one particular case. The results LSM help better understand feasibility their...
High T/sub c/ superconductors are highly attractive because they can operate at liquid nitrogen temperature. The high performance of bulk is exciting to people in the application research work on superconducting magnetic levitation (Maglev) vehicle. Maglev concept using has been demonstrated by Beijing Small Model. In this paper, schemes relating use YBaCuO materials for vehicle discussed. First, arranged above rail NdFeB permanent magnets. second scheme electromagnetic suspension (EMS)...