A5100356091- Metallurgical Processes and Thermodynamics
- Iron and Steelmaking Processes
- Robotic Path Planning Algorithms
- Advanced materials and composites
- Microstructure and Mechanical Properties of Steels
- Control and Dynamics of Mobile Robots
- Aluminum Alloy Microstructure Properties
- Thermal and Kinetic Analysis
- Non-Destructive Testing Techniques
- Ultrasonics and Acoustic Wave Propagation
- Adaptive Control of Nonlinear Systems
- Materials Engineering and Processing
- Geotechnical and Geomechanical Engineering
- Metallurgy and Material Forming
- 3D Printing in Biomedical Research
- Industrial Vision Systems and Defect Detection
- Geophysical Methods and Applications
- Thermal Analysis in Power Transmission
- Minerals Flotation and Separation Techniques
- Advanced Battery Technologies Research
- Landslides and related hazards
- Intermetallics and Advanced Alloy Properties
- Granular flow and fluidized beds
- Robot Manipulation and Learning
- Robotic Locomotion and Control
University of Science and Technology Beijing
2015-2024
Shandong Jiaotong University
2021
Cloud Computing Center
2020
Chinese Academy of Sciences
2020
Beijing Academy of Artificial Intelligence
2020
University of Shanghai for Science and Technology
2012
In this article, an adaptive neural network control scheme is presented for uncertain wheeled mobile robot (WMR) with velocity constraints and nonholonomic constraints. practice, dynamic parameters of the system, which may change in some conditions, are hard to obtain precisely, WMR should be constrained safety. To deal uncertainty robot, networks used approximate unknown robotic dynamics, barrier Lyapunov function guarantee constraint on velocity. The tracking error closed-loop system...
Abstract Compared with traditional monolayer cell culture, the three-dimensional tumor spheroid has emerged as an essential in vitro model for cancer research due to recapitulation of architecture and physiology solid human tumors. Herein, by implementing rapid prototyping a benchtop 3D printer, we developed new strategy generate analyze spheroids on commonly used multi-well plate. In this method, printed artifact can be directly mounted 96/384-well plate, enables hanging drop-based...
The detection of surface defects is very important for the quality improvement steel plates. In actual production, as plate production line runs faster, defect algorithm required to meet requirements real-time (less than 100 ms/image), and accuracy improved (at least 90%). this paper, an multi-block local binary pattern (LBP) proposed. This not only has simplicity efficiency LBP algorithm, but also finds a suitable scale describe features by changing block sizes, thus ensuring high...
Corrosion has always been an important factor affecting the life of steel, which causes huge economic losses every year. How to improve corrosion resistance steel a research focus. Adding rare earth elements into is method steel. In this paper, effects on are summarized, including purification molten modification and inclusions, improvement grain boundaries by solid solution strengthening, influence phase transformation refinement microstructure, reduction in C N desolubilization. On basis,...
This paper investigates the semiglobal stabilization problem for nonholonomic mobile robots based on dynamic feedback with inputs saturation. A bounded, continuous, time-varying controller is presented such that closed-loop system semiglobally asymptotically stable. The systematic strategy combines finite-time control technique virtual-controller-tracked method, which similar to back-stepping procedure. First, bound-constrained smooth kinematic model. Second, designed make generalized...
As the last step of inclusion removal in tundish, dissolution Al2O3 tundish slag is very important and has received many interests by previous researchers. In present work, effect Na2O addition on CaO–Al2O3–MgO–SiO2 at 1823 K was investigated using rotating finger method. The interface between rod molten SEM-EDS technique. CaO–Al2O3–MgO–SiO2–Na2O system increases with increase speed immersing time. A linear relationship logarithm rate periphery velocity found a slope 0.53, which indicates...
The mineralogical phase of slag after crystallisation is essential to utilisation steelmaking slag. phases cooled multicomponent CaO–SiO2–MgO–Al2O3–FetO–P2O5 with different iron oxide contents and basicities (defined as the ratio mass percentage CaO SiO2 (w(CaO)/w(SiO2))) in atmospheres were investigated present work by scanning electronic microscopy energy dispersed spectroscopy analysis X-ray diffraction. argon are mainly nCa2SiO4-Ca3(PO4)2 (thereafter nC2S-C3P) solid solution, (Fe, Mn,...
There are increasing demands for developing fluorine-free mold fluxes continuous casting of steel. When removing fluorine from flux composition, it is necessary to replace with oxides, which must maintain the technological parameters, related viscosity, melting characteristics, and crystallization behavior. For industrial developments in CaO–SiO2–Na2O–Al2O3–TiO2–B2O3–MgO (with basicity = 1, Al2O3 7%, TiO2 5%, B2O3 3%, MgO 2%) slag system, know effect Na2O concentration regarding kinetics....
A large enhancement of anomalous Hall sensitivity (Sv) by metal/oxide interfacial modification is obtained in a MgO/[Co/Pt]3/MgO multilayered structure. The values Sv are increased to 8363 V/A·T CoO insertion and 2261 Pt insertion, while approximately 1000 normal semiconductor sensors. Microstructural analysis shows that the crystal orientation [Co/Pt]3 multilayers improved, oxygen concentration largely changed introducing an ultrathin layer at interfaces, leading increment Sv.
If the combined model is used to calculate residence time distribution (RTD) curves of different outlets multi-strand or asymmetric tundishes, there may exist negative dead volume fraction bigger calculation errors. The flow characteristics (the fractions region, plug flow, and well-mixed flow) are analyzed mainly on basis tracer concentration versus curve (C curve) E curve. In present work, obtained by "pulse stimulus-response" tests was translated into F generated step input tracer; then...
Intermetallic compounds have been studied for their potential application as structural wear materials or coatings on engineering steels. In the present work, a newly designed intermetallic composite in Ni-Mo-Si system was fabricated by arc-melting process with commercially pure metal powders starting materials. The chemical composition of this is 45Ni-40Mo-15Si (at %), selected according to ternary alloy diagram. microstructure characterized using optical microscopy (OM), scanning electron...
Particle image velocimetry (PIV) system was adopted to investigate the relationship between mixing phenomenon and flow field of a 210 t RH degasser by 1:4 scale water model. The results simulation experiments indicated that time decreased with increase gas blowing rate. However, Snorkel immersion depth (SID), presented decreasing rend firstly then increased. measurement fields ladle PIV can explain above. According characteristics in ladle, be divided into layer, transition inactive layer....
Abstract In recent years, due to the large‐scale construction of wind power and shore projects, amount submarine high‐voltage AC cables has been increasing year by year, they often form a “common corridor” in parallel with adjacent pipelines, resulting interference on pipelines. A lot research carried out law buried pipelines onshore. However, there is lack discussion suffered from cables. How understand determining safe distance become an urgent demand practical production. Based this, this...
The addition of tetrabasic lead sulfates (4BS) as additives to positive pastes will effectively address the shortcomings which occur during usage Lead-acid batteries, such premature capacity loss and active substances shed in paste. We synthesized 4BS seeds using doped sulfate atmospheric hydrothermal method with oxide, sulfate, sulfuric acid reactant. purity yield reach above 99% 92.5%, respectively, particle size was approximately 10 μ m. products have been characterized by scanning...
In the context of "carbon neutrality" and peaking", accuracy carbon emission control for distributed energy stations is becoming increasingly high, it urgent to propose a flow tracking method stations. On basis power system theory, this article proposes calculation on load nodes connecting branches based relationship between flow. The correctness verified by an IEEE 14 node example. results indicate that can clearly identify with high rates areas emissions, provide reasonable reduction...
Abstract The de-noising of data has become the key problem ground penetrating radar (GPR) research. In this paper, method based on combination complete ensemble empirical mode decomposition (CEEMD) and wavelet is proposed. By combining CEEMD decomposition, effective signal information can be extracted from removed intrinsic function (IMF) components in CEEMD. Numerical simulation results show that quality GPR obviously improved by using method.