A5101527249- Power Systems and Renewable Energy
- Smart Grid and Power Systems
- High-Voltage Power Transmission Systems
- Advanced Computational Techniques and Applications
- Embedded Systems and FPGA Design
- Advanced Sensor and Control Systems
- Simulation and Modeling Applications
- Advanced Measurement and Detection Methods
- Engineering and Test Systems
- Photonic and Optical Devices
- Power Systems and Technologies
- Advanced Thermodynamic Systems and Engines
- Advanced Decision-Making Techniques
- Advanced Algorithms and Applications
- Advanced Numerical Analysis Techniques
- Silicon Carbide Semiconductor Technologies
- HVDC Systems and Fault Protection
- Advanced Fiber Optic Sensors
- Refrigeration and Air Conditioning Technologies
- Microgrid Control and Optimization
- Smart Grid Energy Management
- Vehicle Dynamics and Control Systems
- Semiconductor Lasers and Optical Devices
- Advanced machining processes and optimization
- Technology and Security Systems
Chongqing University
2024
Zhengzhou Institute of Machinery
2024
Hohai University
2024
Hisense (China)
2023
Tianjin University
2021-2022
Nanjing University of Information Science and Technology
2008-2020
Second Military Medical University
2020
Changhai Hospital
2020
State Key Laboratory of Vehicle NVH and Safety Technology
2019
University of Electronic Science and Technology of China
2018
Abstract:
The conventional direct parameter extraction method generally suffers from cumbersome due to redundant experiments. An efficient and systematical extracting solution is proposed based on an equivalent circuit model of distributed feedback (DFB) lasers. successfully built includes the necessary intrinsic parameters in rate equations extrinsic provide a better approximation actual laser. This experimentally verified through DFB laser chip measurement electronic optical performance under same...
Unmanned aerial vehicles (UAVs) have become increasingly popular in the civil field, and building inspection is one of most promising applications. In a rural area, UAVs are assigned to inspect surface buildings, an unmanned ground vehicle (UGV) introduced carry reach area also serve as charging station. this paper, mission planning problem for UGV systems focused on, goal realize efficient buildings specific area. Firstly, (MPP) involving UGVs described, optimization model established with...
Frequency-tunable microwave signal generation is proposed and experimentally demonstrated with a dual-wavelength single-longitudinal-mode (SLM) erbium-doped fiber ring laser based on digital Opto-DMD processor four-wave mixing (FWM) in high-nonlinear photonic crystal (PCF). The PCF employed for the of FWM to obtain stable uniform oscillation. Two different short passive sub-ring cavities main cavity serve as mode filters make SLM lasing. two lasing wavelengths are electronically selected by...
A novel soft recovery control method of interleaved two-transistor forward converter (ITTFC) is introduced in this paper. Its operation principles are analyzed and compared with the conventional ITTFC, by which it shows can reduce voltage stress reverse loss secondary rectifier, potentially, eliminate free-wheeling diode without performance penalty. The analysis verified a 700 W prototype, proves new achieve higher efficiency, especially under light load condition. For CM EMI issue resulting...
With the rapid growth of power demand, there are more and concerns on demand response as it helps improve consumption efficiency maintain balance between electricity supply consumption. Customer baseline load(CBL) forecasting is basis implementing, selection similar days method calculating significantly affect accuracy CBL prediction. This paper proposes a load optimal based non-demand-response factors, considering effects factors costumer characteristics forecasting. The proposed combines...
Tetris game is one of the most popular and interesting computer game. To reduce cost simply circuit, a system developed base on single chip microcomputer light-emitting diode dot matrix module. The hardware application software are designed whole principle various details in described. including five parts: microcomputer, address lock module, LED display input module C51 program. composed keys through which plays uses 74ls373 to realize multiplexing P0 port. AT89S52 used as main control...
Multi‐port hybrid DC circuit breakers (MP‐HCBs) are rapidly developing due to their obvious advantages in economy compared traditional two‐port (HCBs). However, most of the existing MP‐HCB topologies do not have current‐limiting capability, and a large number insulated‐gate bipolar transistors (IGBTs) still needed main breakers. In response problems, multi‐port breaker (MP‐CLHCB) based on thyristors is proposed this paper. MP‐CLHCB uses low‐cost instead IGBTs, suppresses rise fault current...
This work deals with multi-objective optimization for the suspension parameters of railcars and proposes an strategy combining collaborative method metamodel to optimize railcars. In this strategy, system-level subsystem-level problems are efficiently calculated by method, replaces actual model in improve convergence robustness algorithm. Finally, optimal combination is determined effective implementation proposed compared original design terms performance robustness. Here, lateral running...
In order to meet the maintenance requirements of harsh environment and unattended equipment sites, it is proposed use an embedded Web server as core in target turntable system HTML web pages design human-computer interaction interface facilitate cross-platform control. Deliver software upgrades status monitoring, complete interaction, achieve remote unmanned The article gives key code for implementation. Through experiments, verified that scheme has little dependence on control terminal...
Abstract Power flow controller (PFC), fault current limiter (FCL) and DC circuit breaker (DCCB) are important equipment in the grid. There a large number of power electronic components these equipment, resulting high cost. In order to reduce use additional components, current‐limiting with control capability is proposed here, which integrates PFC, FCL, DCCB into one equipment. Further, main shared by all lines connected bus The topology operating principle introduced. Theoretical analysis...
Electric drive system is the key that divides electric vehicles from traditional fuel vehicles. It introduces new components such as non-linear inverter circuits, motors, power batteries and control circuits. Compared with mechanical transmission system, introduction of these electronic devices greatly increases magnitude electromagnetic interference, which influence reliability communication system. Therefore, it necessary to establish a system-level model help engineer predict optimize...
To some extent, using a plane curve to approximate an offset of the Bezier is restricted. In this paper, region approximation idea that means fat with width proposed, and complete set algorithms disk are given implemented. algorithms, optimal uniform as central Disk found by Remez method, then upper principle proposed compute error radius function curve. Thus, whole can be obtained. end effect not only analyzed assessed, but also specific examples provided.
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为了更有效地控制和调节激光器的温度与功率，设计了一种基于STC11F08XE单片机控制的具有温控和功率控制功能的激光发生器驱动电路。通过使用ADN8830芯片的温度控制功能和ADN2830芯片的功率控制功能实现激光器的温度控制，同时能够手动改变激光器的输出功率。实验结果表明，该系统温度控制模块能够稳定控制激光器温度，使目标温度误差低于0.01 ℃，波长可以在1 535.17 nm~1 563.24 nm之间变动。功率控制模块可实现手动控制，激光器功率在0~10 dBm间变化，误差在0~0.05 mW之间。
The coupling efficiency of the pump coupler determines light injection capacity a laser system. We have designed in cascaded structure, which two or more couplers are spliced together through signal fibres to form new with high and output power. In experiment, (2 + 1) × 1 (1 side-pumping were made, respectively, structure. Three LDs power ∼400 W three pumping arms coupler. A total this cascaded-structured was ∼1100 W, corresponding as 91.6%. loss <0.4%.
Objective To observe the effect of chronic nicotine intake on cerebral edema induced by ischemic reperfusion in rats and also to investigate mechanism involved.Methods Ninety male SD rats,with an age 10 weeks,were randomly divided into normal saline group (n =45),and =45).The animals 2 groups were respectively given physiological (0.5 ml/kg · d) (subcutaneous injection with at a dosage 3mg/kg for 6 weeks.After weeks,models injury developed,and occurrence seriousness observed 5 different time...