Proceedings of the 2016 International Conference on Advanced Electronic Science and Technology (AEST 2016)

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141 articles

Optimization design of planar transformer in DC-DC converter

Linlin Tan, Xu Yang, Dian Yuwen
Planar transformer show great advantages compared with traditional transformer in DC-DC converter for its small size and low power dissipation. However, its performance might not be as effective as expected in high frequency and high current applications for the existence of high frequency effects. In...

Simulation study on the frequency response curve of the winding in different kinds of failure

Ronghai Liu, Kun Wang, Yingchun Yang
The equivalent circuit model is established to reflect the physical characteristics of the inner winding of the transformer, and then the parameters of the equivalent circuit model are calculated by using the finite element simulation software Maxwell ANSYS. Based on the establishment of the transformer...

Catenary method of helicopter live-line work in transmission line

Jian Qin, Fei Peng, Liang Qiao, Ming Jiang, Kai Liu
The load of wire in helicopter live-line work is analysed, and the calculation method for cable lifting of helicopter is proposed based on catenary theory of suspension cable. The nonlinear equation set is established to calculate the lifting force of the helicopter. The tangent stiffness matrix of the...

Force analysis for pure rolling movable teeth transmission

Yali Yi, Yameng Ji
Based on the principle of sliding and rolling substitution, combined movable tooth design, approaches were presented to eliminate the slip phenomenon, ensure the pure rolling contact of meshing pairs and realize pure rolling movable teeth transmission. According to the coordinate condition of elastic...

The effect of temperature on torque motor air gap reluctance and permanent magnet polarization magnetomotive force

Jiayan Qin, Changchun Li, Hao Yan, Lei Li, Chan Xue
The temperaturefactor is introduced in modeling progress, based on double nozzle baffle electro-hydraulic servo valve torque motor. A new temperature model of air gap reluctance and polarization magnetomotive force was proposed. And an accurate magnetic flux computing method was deduced, in order to...

Problems of recommendation

Juntao Liu, Caihua Wu
In this paper, we propose a classification framework of recommendation problems. In this framework, the problems of recommendation are classified according to the input and output of the problems. Different kinds of recommendation problems are introduced under this framework. And the corresponding recommendation...

An assembly system based on industrial robot with binocular stereo vision

Hong Tang, Nanfeng Xiao
This paper proposes an electronic part and component assembly system based on an industrial robot with binocular stereo vision. Firstly, binocular stereo vision with a visual attention mechanism model is used to get quickly the image regions which contain the electronic parts and components. Secondly,...

Numerical simulation of the target echo of radio fuse in missile-target encounter

Yanjie Cui, Ziwei Wu, Man Liang, Jianguang Zhao, Wenqiang Chen, Xiangyang Zhang
In order to meet the requirements of fuse's digital simulation, an algorithm based on the electromagnetic scattering modelling technique of complex targets in the near field is proposed to calculate the echo power of fuse in missile-target encounter. The main research work in this paper involves the...

Multi-camera tracking algorithm study based on information fusion

Guoqiang Wang, Shangfu Li, Xue Wen
Intelligent video surveillance technology is a part of pattern recognition used for analyzing, extracting and recognizing behavior characteristics of a moving target basing on computer algorithms. The target tracking algorithm combines particle filter and Mean-shift in overlapping multi-camera environment...

Random vector space approach applied in integrated navigation information fusion of UAVs

Rongjun Mu, Yuntian Li, Yongzhi Shan
Federated Kalman Filter (FKF), is the most widely used distributed data fusion algorithm. Whilst FKF required local systems of the same system model, which is difficult to satisfy in most circumstances. How to balance the estimation accuracy and the calculating load is an urgent problem needs to be solved....

Automatic segmentation of spinal cord injury using coarse-to-fine strategy

Jiali Cui, Yubo Ma, Wei Xie, Yiding Wang, Ruiming Jia
Medical image segmentation is a key issue in the field of medical image processing and analysis. Segmentation of spinal cord injury draws interests of researchers recently. To eliminate human computer interaction in segmentation of spinal cord injury, an automatic segmentation of spinal cord injury is...

A fast detection method for changed land using UAV remote sensing image

Hongfei Huang, Xiaoguo Zhang, Jiadong Lv, Meijiao Xu
This paper proposes a fast detection method for changed land using UAV remote sensing image. Firstly, a series of SURF feature points on the old time phase orthoimage are retrieved and stored into a matching database. Secondly, through the establishment of coarse - fine double matching recursive model...

Grasping force control of a tendon-driven prosthetic finger based on force estimation using motor current signals

Wendi Zhuo, Yi Zhang, Hua Deng
A force estimation model using motor current signals was deduced in this paper for a tendon-driven prosthetic finger grasping objects with its distal phalanx. Models of the prosthetic finger were first established. As driving moment of each joint could be calculated form motor current, stable grasping...

Force control of an underactuated prosthetic hand based on sliding mode with exponential reaching law

Huanxin Luo, Rong Hu, Hua Deng
The design of a sliding mode force control system for an underactuated prosthetic hand system are addressed in this study. First, a mathematical model of underactuated prosthetic hand is developed and state equation of DC motors is discussed for force control. Next, sliding mode force control based on...

Research of current studying status and developing trend of decoupling algorithm for six-axis force/torque sensor

Binbin Han, Yingjun Li, Guicong Wang
For different structures of sensor have many decoupling algorithms, this paper discusses mainly from two aspects the decoupling algorithm of six-axis force/torque sensor. One is the linear decoupling which is under the assumption that the sensor system is a linear system, another is the nonlinear decoupling...

Study on automatic detection method for the enclosed turbine runner chamber based on real-time image acquisition and simulation comparison techniques

Yunlong Liu, Xiangwei Yang, Dengke Li, Dingjie Shen, Jianwei Zou
According to the technical problems of the existing testing methods for the key hidden metal components (such as the decompression panel and the water board) of the turbine runner chamber, such as the poor reliability, the inaccurate locating and the larger detection blind spots of the detection device,...

Design and simulation of near-field waveguide probe fixed with circular SRR array

Siming Zhao, Bing Hu
The probe structure is the primary issue for near field detection procedure. In this paper, a waveguide probe with circular split ring resonator (SRR) array fixed on its open end is proposed. The probe explores the under-detected object surface by measuring the phase of S11, which is quite sensitive...

A retweet prediction method of micro-blog big data users based on Map/Reduce

Yuelong Zhao, Meng Fang
In all kinds of social network software, retweet is a common behavior and a important mechanism for information dissemination. Especially retweet prediction of micro-blog users is very important to deep research. However traditional method can't be effectively applied to big data. To solve this problem,...

Research on the problem and countermeasures of charging stations applied in large-scale

Tao Jiang, Liang Shen, Fen Qin, Tiyin Li, Weiyong Yu
During the "13th five-year plan period", the central government pay higher attention and energetic support to new energy vehicles. But the main factor restricts the development of new energy vehicles is charging station construction lagging behind. There is an urgent need for large-scale application...

Practical application of intelligent micro prefabricated substation in the concentration areas of the city

Qi Jiang, Bo Jiang, Minzhe Ren, Yu Zhang
With the development of smart grid, the integration of electrical devices has become the main trend. The construction of smart substation will meet the need of the development of smart grid. The application of the intelligent devices enables the interaction of information in real time, and it achieves...

The research of characteristics of the shear force transmission between the magneto-rheological fuid layer

Chunfu Gao, Guang Zhang, Weizeng Chen, Xinsheng He, Lingyu Shi, Shihe Pan, Haiting Zhang
In order to studying the characteristics of MRF inter-layer shear force, through the development of MRF inter-layer shear force experiment device, under the action of dynamic composite field that composed of magnetic field and temperature field, the experiment analyzes the characteristics of magneto-rheological...

Experimental investigation on performance of a turbocharged DI diesel engine using isopropanol-diesel fuel blends

Bin Xu, Yibin Liu, Jianhao Jia, Jian Wu, Weiwei Shang, Zhihao Ma
Experimental study was conducted to investigate the effects of using isopropanol-diesel fuel blends on the engine performance and exhaust emissions in an electronic control high-pressure common rail turbocharged direct injection diesel engine. Experiments have been performed for different isopropanol-diesel...

Design and analysis of electric vehicle battery management system based on flexray bus

Jiangyi Lv, Guanli Huang, Hualei Zhang, Jubiao Yao, Yong Chen
Flexray bus is considered as a more promising bus in the future with the performance of real-time, scalable, and fault-tolerant. In this paper we design an electric vehicle battery management system based on flexray bus, including the hardware design, the SoC estimation theory, flexray protocol design...

Analysis of the effect on propagation of voltage sag considering different winding connection modes of transformer

Jiming Chen, Lizhi Qi, Guiyue Jin, Yongduan Xue
The effects of transformers on the types and characteristics of voltage sag are also different when the voltage sag is transmitted by the transformers, which have different winding connection modes. In this paper, using the system simulation model built by PSCAD, based on the derivation of voltage transfer...

Master-slave control for prosthetic hands based on cybleglove

Wen Nie, Liang Tang, Qunming Li
To achieve a human-like grasp for prosthetic hands, this paper proposes a master-slave control system for the prosthetic hands based on the Cybleglove II. The movement characteristics of human finger joints were acquired via the data glove, and analysed by the LabVIEW real-time control system simultaneously....

An image fusion method based on wavelet transform

Shun Na, Jiao Xue, Yang Liu, Yinghui Zhang
In some researches of image fusion, the wavelet transform (WT) often contribute more useful information. The objective of image fusion is to combine relevant information from two or more images of same scene into a single composite image, which is more informative. In this paper, an image fusion method...

Numerical simulation of formation process of keyhole-induced pore for laser deep penetration welding

Pingan Shi, Qiang Wan
In order to understand the mechanism of pore formation and accurately simulate the dynamic process of keyhole-induced pore in laser deep penetration welding, a three-phase mathematical model of laser keyhole welding is established to reflect the formation process of bubble, and a ray tracing method based...

Effect of guide vane on pressure fluctuation and radial force in hydraulic turbine

Fengxia Shi, Ningrui Zhang
An unsteady three-dimensional simulation based on Reynolds time-averaged control equations and RNG k- turbulence model is presented for hydraulic turbines, and the pressure fluctuation and radial force characteristic of hydraulic turbines are obtained. The results obtained show that the time domain of...

Monitoring application of distributed optical fiber measurement technology in petrochemical industry

Jianfeng Gao, Yawen Cai
With the continuous development of optical fiber measurement technology, it has been more and more used in petrochemical industry. This paper introduces the using two application examples, including distributed optical fiber measurement technology for storage tank temperature and pipeline strain monitoring....

Multiple kernel support vector machine short-term load forecasting based on multi-source heterogeneous integration of load factors

Jun Gao, Meng Nie, Ying Zhen, Qianhong Wu, Yanda Wu, Pengli Qiao, Pei Li
In this paper we present a novel method developed from multiple kernel function for short term load forecasting to integrate multi-source heterogeneous load factors in big data. Nine kinds of load factors were selected as multi-source heterogeneous factors. In the proposed method, three algorithms (the...

A tracking algorithm based on classification information

Li Ren, Zuzong Muo
With the development of the sensor, the sensor can get more information of targets. Therefore, Scholars start to research new information of targets and a variety of methods are emerged in the process of exploring. It is meaningful for multiple targets tracking that if the sensors can distinguish target...

Sound pressure level calculation methodology investigation of corona noise in AC substations

Xiaowen Wu, Nianguang Zhou, Chunming Pei, Sheng Hu, Tao Huang
In order to improve the measurement accuracy of corona noise in AC substations, the characteristics of different noise sources are measured and analyzed. Wavelet analysis method is employed to decompose the original noisy corona signal. A stop-band comb filter is designed to process the reconstructed...

Character information extraction based on CRFsuite

Jingzhong Wang, Zhongren Li, Wei Huang, Ke Xiao
By applying the Conditional Random Fields based on discriminant undirected graph to character information extraction, this paper proposes an automation character information extraction method based on CRFsuite. Through learning the known domain, this method extracts the feature leading words, position...

Subspace intersection using acoustic vector sensors by extracting main eigenspace of modal subspace

Weiwei Ai, Jinyu Xiong, Xiaoyong Zhang
The subspace intersection method using acoustic vector sensors [5] provides unbiased bearing estimates in a range-independent shallow ocean with the advantage of both subspace intersection(SI) method and acoustic vector sensors(AVS) array. But its robustness is poor. In this paper, an improved SI method...

Micro-Doppler modeling and simulation research of several typical micro motion forms

Haiyang Zhang, Shen Li, Zheng Zheng
A Micro-Doppler mathematical model of the point target and radar is established in the four kinds of micro motion forms: vibration, rotation, tumbling and cone. A new method of detecting Micro-Doppler features is introduced: double pulse laser coherent detection, combining algorithm principle and mathematical...

A noise calculation and experiment with analog ROF transmission module

Xiaojing Wang, Mingyu Lin, Yaoting Yang, Guihua Han
ROF technology is widely applied in high speed wireless communications of large capacity, ROF system can introduce noise simultaneously, affects the system's noise figure. This paper calculated in detail the noise figure of the analog ROF transmission module, used the classic noise theory of the analog...

A high speed Montgomery processor of 256-bit on FPGA

Xiaonan Zhang, Xiuze Dong
To improve the speed of modular multiplication operation on ECC processor over GF (p), the paper presented a novel hardware implementation of Montgomery algorithm. Based on analyzing basic Montgomery modular multiplication algorithm, this work applied multi-step operation to Montgomery algorithm, which...

Quantitative characteristics of traps in AlGaN/GaN MIS-HEMT via transient capacitance measurement

Jie Lin, Bin Dong, Ning Wang, Zongdai Liu, Lingli Jiang, Kai Cheng, Hongyu Yu
The electrical property degradation of AlGaN/GaN MIS-HEMT, including degradation of output characteristics, a higher ON-resistance and a threshold voltage negative shift (~1.8V), is correlated with near-interface trap behaviours in SiN/AlGaN. These traps are quantitatively characterized using the transient...

Chaotic characteristics analysis of simulation signal of second harmonic generation effect

Hanying Mao, Yuhua Zhang, Hanling Mao, Zhenfeng Huang
In order to deepen the understanding of nonlinear properties of specimen in the process of fatigue crack extension, the chaos and fractal theory are presented to analyze the second harmonic generation (SHG) signal of receiver in nonlinear ultrasonic system. Firstly the usefulness of chaos and fractal...

Analysis of flow of outer meshing elliptic gear pump based on Fluent

Qingdun Zeng, Junzhi Sun
The output flow is one of the important indicators of gear pump performance. External meshing elliptic gear pump is a new type of displacement pump, whose performance is better than circular gear pump, especially in terms of output flow. The influence of rotating speed, centrifugal rate and number of...

Electric tracing system temperature control of submarine heavy oil pipeline based on genetic algorithm

Li Ding, Jiasheng Zhang
In order to optimize the heating dynamic response of heavy oil in the submarine pipeline, the control system of the pipeline electric current tracing system is designed. Firstly, the mathematical model of electric current tracing system for heavy oil pipeline is established based on mechanism modeling...

A Double-layer power allocation strategy to alleviate solar energy congestion in the distribution grid

Baibing Liu, Xingzhen Bai, Zhengzhong Gao, Qiao Sun, Kui Liu
Many communities have their own renewable energy generators to reduce long-distance power transmission losses and to decrease greenhouse gas emissions. However, in high power demand regions, power transmission congestion is often occurred when abundant renewable energy is generated and injected into...

Development of >10kv 4H-SiC SBD junction extension termination

Runhua Huang, Yonghong Tao, Ling Wang, Gang Chen, Song Bai, Rui Li, Yun Li, Zhifei Zhao
10kV 4H-SiC JBS diodes with various junction extension terminations have been experimentally realized. The protection efficiencies of single JTE and modulation JTE terminations were investigated by means of numerical simulations. The JTE dose window to achieve the high protection efficiency has been...

Improved YARN resource scheduling algorithm based on network load sensing

Xuyang Ding, Xiaohui Liu, Rui Zhang, Shan Tang, Linqin Sun, Ying Xie
Confronted with multitask scheduling, YARN may conduct a precise calculation and allocation towards every single task's computing and memory resources,however it failed to consider the impact on task fulfillment and cluster resources utilization. In this paper, we propose a new algorithm to allocate...

Research on vibration detection of GIS basin insulator

Ronghai Liu
This paper firstly introduces the importance of the GIS equipment basin insulator, and the serious impact of the basin type insulator damage. Later, the theoretical basis and method of vibration detection are introduced, and on the condition of intact and damaged of the basin insulator, the experiment...

A novel hall thruster utilizing space debris as the propellant

Peng E, Wenbin Ling
The paper proposed a new conception of using space debris as the working medium of the hall thruster. At first, we described differences of the physical properties between the space debris powder and gaseous propellants and estimated the charge quantity of the charged space debris powder. Then, we dealt...

A dual-loop control system of grasping force for prosthetic hands

Congbo Li, Xiaobao Deng, Qunming Li
Despite the rapid developments of prosthetic hands technologies in recent years, there still exists a huge gap between prosthetic hands and human hands in flexibility. The limitation of sensors attached to the prosthetic hand is one of the causes, and another reason is that the materials, weight, and...

Large crane real-time safety assessment method based on Mamdani fuzzy inference system

Jian Chen
To build a state space evaluation system based on online sensor measuring information, combined with expert experience, a real-time safety assessment method based on Mamdani fuzzy inference system is developed, aiming to monitor safety of large crane in operation and accordingly provide decision support...

Global analysis of almost periodic positive solution of a multispecies discrete Gilpin-Ayala mutualism system with feedback controls

Hui Zhang, Yingqi Li
This paper discusses a multispecies discrete Gilpin-Ayala mutualism system with feedback controls. We firstly obtain the permanence of the system. Assuming that the coefficients in the system are almost periodic positive sequences, we obtain the sufficient conditions for the existence of a unique almost...

Double-sided parallel-strip line based broadband magic-T

Huimin Yu, Zhiping Liu
A broadband magic-T based on double-sided parallel-strip line (DSPSL) and microstrip-coplanar waveguide (CPW) transition is presented and demonstrated. The DSPSL magic-T has broad bandwidth and low phase imbalance at the sum (H) and difference (E) ports. The equivalent circuits of the proposed multilayer...