A5114546992- Laser Material Processing Techniques
- Microgrid Control and Optimization
- Energy Efficient Wireless Sensor Networks
- Indoor and Outdoor Localization Technologies
- Power Systems and Renewable Energy
- Underwater Vehicles and Communication Systems
- Electrowetting and Microfluidic Technologies
- Machine Fault Diagnosis Techniques
- Photonic and Optical Devices
- Integrated Energy Systems Optimization
- Graphene research and applications
- Antenna Design and Analysis
- Gear and Bearing Dynamics Analysis
- Advanced Surface Polishing Techniques
- Mechanical and Optical Resonators
- Microfluidic and Capillary Electrophoresis Applications
- Guidance and Control Systems
- Heusler alloys: electronic and magnetic properties
- Welding Techniques and Residual Stresses
- Power System Optimization and Stability
- High-Voltage Power Transmission Systems
- Advanced Optical Sensing Technologies
- Diamond and Carbon-based Materials Research
- Nonlinear Optical Materials Studies
- Silicon Nanostructures and Photoluminescence
Wenzhou University
2022-2024
Shandong University
2024
East China Jiaotong University
2017-2023
Institute of Microelectronics
2022
Chinese Academy of Sciences
2022
University of York
2020
Tianjin University of Technology
2019
Xiamen University
2019
Beijing Institute of Technology
2013
Taiyuan University of Technology
2010-2011
This paper develops a closed-loop coupled fault estimation and multivariable resilient control for high-speed train traction rectifier with upset conditions. By treating the multidimensional adverse states as changes of single faults evolution factor, we build reduced dimensional MIMO model satisfying persistently exciting condition. In presence faults, nominal feed-forward controller guarantees reliability stability. Then, fast proportional integral estimator is employed to predict system...
This paper proposes a novel impulsive thrust strategy guided by optimal continuous to address two-player orbital pursuit-evasion game under control. The seeks enhance the interpretability of integrating it within framework differential in traditional systems. First, this introduces an impulse-like constraint, with periodical changes amplitude, characterize Then, constraint is converted into two-point boundary value problem, which solved combined shooting and deep learning method proposed...
CO2 laser machining is a cost effective and time saving solution for fabricating microchannels on polymethylmethacrylate (PMMA). Due to the lack of research incubation effect ablation behavior PMMA under high-power irradiation, predictions microchannel profile are limited. In this study, process mechanism continuous production in single-pass multi-pass scan modes investigated. It found that higher energy density single pass causes lower threshold. The ablated surface can be divided into...
Black silicon, which is an attractive material due to its optical properties, prepared mainly by laser inducing in SF6 atmosphere. Considering the effect of gas on environment and human health, here we propose efficient, economical, green approach process large-scale black silicon. In wavelength range 0.3-2.5 µm, role air could replace texture silicon with appropriate processing parameters. Then, extend working window excellent light-trapping status, laser-plasma shockwave cleaning was...
Gilbert damping is of crucial importance for spintronic devices due to its practical effect on the response time and energy consumption. Lower would enable more energy-efficient excitations and, thus, less current needed. The constant Co2FeAl film, a half-metal material important spintronics with 100% spin polarization at Fermi level, has shown an abnormal increase thin film limit inter-diffusion Al atoms. Here, we report that ultra-thin Co2FeAl1+x films nanometer thicknesses can be...
This paper presents a bandpass filter composed of cavities delimited in Low Temperature Co-fired Ceramic (LTCC) substrate by periodic lattice metallic via-holes. Compared with the conventional two dimensional PCB, LTCC technology achieves higher Q factor, density, smaller size, and lower cost[1]. I/O coplanar waveguide (CPW) feeds are printed on top face suitable for planar circuit integration. EM simulator HFSS is employed determining optimizing physical dimension filter. In this paper,...
Rotary drilling has been recognized for its excellent performance in laser drilling. However, there are few studies on the optical path trajectory equations guiding implementation of rotary drilling, which limited development Here, paper deduces by combining spatial vectors based three wedges platform. Then, influence parameters equation microhole and is discussed using control variable method. The results show that systems can have a good ability obtained from equations.
The ternary topological insulators Bi 2 Se 3 − x Te have attracted a great deal of attention due to their exotic physical and chemical properties. While most the studies focus on properties these TIs, limited research was performed investigate dynamic atomic stack its crystal structure. We prepared high-quality thin films GaAs(111)B substrates using molecular beam epitaxy, characterized with Raman spectroscopy, x-ray diffraction photoelectron spectroscopy. It is found that when replaced by...
In this paper, a wide-band patch antenna that works in S band is designed, which using E-shaped antenna. By the microstrip design technology, requirement of certain type wireless equipment gotten. order to broaden bandwidth antenna, used design, and determination for grooving E size method has been discussed. At same time SMA connector adopted design. A comprehensive parametric study carried out understand effects various dimensional parameters optimize performance final The simulations are...
Automation based on pneumatic soft actuators (PSAs) offers extensive benefits for operation in strong magnetic fields, at ultrahigh electric potentials and underwater environments. However, due to the lack of automated control systems, most PSAs require external electronic controls, such as programmable logic controllers (PLCs), pumps, solenoid valves. Recently, researchers have investigated use microfluidic gates a promising alternative submillimeter-scale fluidic components. In this...
To solve the constraints between sensitivity and bandwidth of MEMS vibratory gyroscopes, a novel optimization design method is proposed. It based on Dynamic Characteristic Extraction Response Surface Methodology (RSM) can optimize simultaneously. In this method, constrains are firstly determined by characteristic extraction. Secondly, central composite least square used to build up second order response surface approximate model performance gyroscopes. And then, optimized taking verification...
Titanium alloy is a type of high-strength material that difficult to process. In particular, in the aerospace field, processing accuracy titanium high. Recently, laser has emerged as new technology with high precision. However, methods have obvious differences and effect. Among them, spiral scanning method plays an important role welding drilling, but owing complexity molten pool behavior, there been limited studies on removal mechanism based scanning. To understand variable process melt...
This paper analyzes the incipient fault detection and isolation issues of high speed train (HST) traction motor power system. The features in such a are obscure tight coupling with few samples, separation vary nonlinear pattern. Up until now, most existing diagnosis techniques have been presented under condition that these faults exclusive, which means there is only one once. However, HST applications, coupled more common to take place due interconnected nature different components. To...
This article studies the classical MDS and dwMDS location algorithm. On this basis, relaxation iteration method is introduced to replace SMACOF algorithm as optimization objective function. The results showed that network connectivity increases with increased communication radius, it has a good effect of positioning in node density from 2 4. performance even better than That for sparse distribution network. And when too large algorithm's maximum number iterations should be limited.
Under isolated mode of the direct current (DC) transmission system, when bipolar blocking occurs in high voltage current(HVDC), alternating (AC) system will generate power frequency over-voltage. Therefore, whether over-voltage can be suppressed is key to DC operate on an island. The new-generation synchronous condensers effectively change grid level. In particular, AC level by a reasonable control strategy. this paper, strategy proposed.The condenser's reactive output characteristics were...