A5113749469- Advanced Numerical Analysis Techniques
- Advanced Measurement and Metrology Techniques
- Advanced Surface Polishing Techniques
- Advanced machining processes and optimization
- Advanced ceramic materials synthesis
- Manufacturing Process and Optimization
- Advanced materials and composites
- 3D Shape Modeling and Analysis
- Advancements in Battery Materials
- Metal and Thin Film Mechanics
- Advanced MIMO Systems Optimization
- MXene and MAX Phase Materials
- Image and Object Detection Techniques
- Quantum Dots Synthesis And Properties
- Anomaly Detection Techniques and Applications
- Fault Detection and Control Systems
- Nuclear Materials and Properties
- Laser and Thermal Forming Techniques
- Simulation and Modeling Applications
- Advanced Measurement and Detection Methods
- Time Series Analysis and Forecasting
- Computer Graphics and Visualization Techniques
- High-Temperature Coating Behaviors
- Laser Material Processing Techniques
- Advanced Wireless Communication Techniques
Peking University
2024
Tokyo Institute of Technology
2023-2024
Guizhou Electric Power Design and Research Institute
2018-2019
Beijing General Research Institute of Mining and Metallurgy
2017-2018
Advanced Technology & Materials (China)
2017
Jilin University
2016
Jilin Medical University
2013-2016
Wuhan University
2014
Xiamen University
2013
Dalian Maritime University
2011-2013
Abstract To enhance the oxidation resistance of HfB 2 ‐SiC‐ZrSi coating, low‐loss film‐forming treatment (LFT) was employed to generate high‐quality oxygen barrier glass layers, and modification effect varying formation temperature on investigated at 1700°C. The results demonstrated that, with LFT 1500°C, relatively modest activity complete dispersion metal oxide nanocrystals generated a compact continuous composite layer, which caused decreased excessive might result in oxidized porous...
The off-axis parabolic mirror plays more and important role in high-tech areas since the advantages of reducing space improving quality imaging. Two ultra-precision manufacturing methods are often applied to machining ellipsoidal mirror, which one is revolving cylindrical blank around axis surface another surface. But method can produce a better result has no rounded comparisons analysis according previous research. In this paper, tool path generation presented corresponding paths each for...
A new method compensating geometric error components of a four-axis horizontal machine tool is presented in this paper. Homogeneous transformation matrices (HTMS) and conversion are integrated the compensation strategy. mathematical model which contains 29 established based on HTMS errors X, Y Z directions obtained through calculation. The three compensated by shifting corresponding axis. But configuration X-axis, Z-axis, B-axis, C-axis without Y-axis, so need to be converted into C...
In this paper, we present the Sub-Adjacent Transformer with a novel attention mechanism for unsupervised time series anomaly detection. Unlike previous approaches that rely on all points within some neighborhood point reconstruction, our method restricts to regions not immediately adjacent target points, termed sub-adjacent neighborhoods. Our key observation is owing rarity of anomalies, they typically exhibit more pronounced differences from their neighborhoods than immediate vicinities. By...
In this paper, we present the Sub-Adjacent Transformer with a novel attention mechanism for unsupervised time series anomaly detection. Unlike previous approaches that rely on all points within some neighborhood point reconstruction, our method restricts to regions not immediately adjacent target points, termed sub-adjacent neighborhoods. Our key observation is owing rarity of anomalies, they typically exhibit more pronounced differences from their neighborhoods than immediate vicinities. By...
In this paper, we study the degrees of freedom (DoF) two-cell multiple-input multiple-output (MIMO) interfering multiple access channel (IMAC) with hybrid state information at transmitters (CSIT). We propose a retrospective interference alignment neutralization (RIAN) method by using CSIT. The approach consists two steps: 1) and 2) neutralization. first step, all users are scheduled to transmit fresh symbols each base station (BS) design matrix align interference. second user sends...
Tool path generation is an important part of ultra-precision manufacturing, and spiral tool one typical driving path. For single point diamond turning (SPDT), two methods are commonly used to generate the points on path, which equally spaced angles arcs for adjacent cutting points. But these both have defects machining radial sinusoidal surface with SPDT. In this paper, theoretical analyses different conducted compared respectively. Then, optimal method generating proposed base analyses, can...
In this paper, a non-contact coordinate measuring machine with laser displacement sensor, which consists of three translational axes, is designed and built independently. order to obtain the precision, it needs calibrate machine. Learning from calibration method contact machine, detection proposed for calibrating precision Based on homogeneous transformation theory, error model under condition that positioning errors, angular straightness errors perpendicularity are taken into comprehensive...
In this paper, a new method is presented for the identification of machine tool component errors. Firstly, Non-Uniform Rational B-spline (NURBS) established to represent geometric The individual errors motion parts are measured by laser interferometer. Then, volumetric error with three modeled based on screw theory. Finally, simulations and experiments conducted confirm validity proposed method.
The blade is one of the key part aero engine because its shape precision and surface quality significantly influence performance, efficiency reliability engine. generally obtained by finishing process, which a repeated work profile error measurement, calculation correction manufacturing. For calculation, matching measurement points ideal must be firstly performed. However there few detailed reported on algorithm. In this paper, new algorithm for was proposed. Firstly, coarse method based...
Silicon is the most attractive anode material of all known host materials for lithium ion batteries because its high theoretical lithium-insertion capacity up to 4200 mAh g-1, but it difficult be applied poor cyclability caused by mechanical invalidation insertion ions. Nanosilicon/CMC/AB composite electrodes doped with WC were prepared ball milling. The effect structure transformation electrode on electrochemical behavior was systematically analyzed X-ray diffraction. properties silicon...
A triangle mesh was reconstructed from an unorganized point cloud through two phases of growing based on different strategies, where regions with high density usually grow at the first phase and remaining later. In each growing, smoothest always firstly then largely avoid errors emerging in sharp regions. The presented test technique geometric integrity as well abnormality disposing method pledged has correct geometry structure. Experiments show that algorithm is efficient effective.
The double ballbar(DBB) is an instrument to measure roundness error of the machine tools. Traditionally, DBB used in vertical tool which has a spindle, so can be easily installed without additional jigs. But condition horizontal different. Because no jigs are needed for measurement. Not only differences using but also forming circular trajectory exist. Center stationary, not tool. trajectories two balls same kinds method that measurement effect comparing with presented.
An adaptive planning method for measuring points of blade section line is presented due to the less distribution along edge specified by chordal tolerance which results in information loss. Based on method, provides number and condition given initial threshold value tolerance. A simulation system based MATLAB developed compare with method. The tests blades are carried out according respectively. indicate that more reasonable than those total reduced considerably efficiency increased
Off-axis aspheric surface is an indispensable optical device for the high precision measurement and manufacturing equipment, tool path generation a very important factor to obtain with form nanometric finish. In this paper, systemic description of method about off-axis parabolic ultra-precision single point diamond turning processed. Two effective methods generating accurate spiral are proposed compared. The mainly based on mathematical calculation directly from analytic surfaces, including...
Silicon carbide, a high-strength material, has ductile-brittle transition mechanism. In order to establish reasonable silicon carbide abrasive belt grinding parameters obtain high precision free-surface efficiently, series of finite element simulations were conducted comprehend the single point diamond using professional analysis software nonlinear in this paper. According differences cutting parameter, such as depth, deformation chip and maximum force studied. For free-form surface with...