bluuebunny/crossref_metadata_2025 huggingface dataset:
Design and Experiment of Test-Bed for Straw Compression Forming and Baling
Authors: Xu Li Zhang , Li Yao Ming , Yin Jian Jun , Wang Cheng Hong
Published: October 2013

In order to study the performance of packing, compression and baling and obtain the influence of working parameters on complete machine, a test-bed was developed based on the packing, compression and baling devices of baler. The measure system consists of IPC, sensors, a data acquisition card and a type of software programmed by using VC++. It can real-time collect, display, process and analyze the parameters and loads of the working parts. Wheat straws with 40% moisture content were used to carry on compression and baling experiments. The test results show that average total power consumption of the working parts, average force acting on the plunger and average force acting on the connecting rod is 3.44 kW, 873.5 N and 11965.8 N respectively when the straw feed rate is 0.8 kg/s and the compression frequency of the plunger is 75 strokes per minute. The bale density can reach up to 125 kg/m3.
A Reference Compensation Current Control of Grid-Connected Inverter for Three-Phase Distributed Generators
Authors: Zhang Shao Ru , Li Shao Yuan
Published: October 2013

Renewable energy resources (RES) are being increasingly connected in distribution systems by utilizing power electronic converters. However, the extensive use of power electronics has resulted in a rise in power quality (PQ) concerns faced by the utility. A novel control strategy implementing reference compensation current was proposed in this paper. So that these grid-connected inverters can achieve maximum benefits when they installed in 3-phase 4-wire distribution systems. The inverter is controlled to perform as a multi-function device by incorporating active power filter functionality. The inverter can thus be utilized as: 1) power converter to transfer active power from RES to the grid, and 2) load reactive power demand support; 3) current harmonics compensation at PCC; and 4) current unbalance and neutral current compensation in case of 3-phase 4-wire system. Moreover, with adequate control of grid-interfacing inverter, all the four objectives can be accomplished either individually or simultaneously. Simulation results show the validity and capability of the novel proposed control strategy.
Modeling and Power Control of Energy Storage System for Wind Park Based on Vanadium Redox Flow Battery
Authors: Wang Xiao Dong , Zhang Lei , Xie Hong Fang , Liu Ying Ming , Song Xiao Wen
Published: October 2013

With the rapid increase of the installed capacity of wind power, the output power fluctuations of wind park had a great influence on the stability of the grid. Energy storage system in the wind farm can smooth the fluctuations of wind power effectively, and improve grid ability to admit wind power. The model of energy storage system based on vanadium redox flow battery was builded according to the state of charge, voltage and current characteristics. A kind of power control strategy with low-pass filtering was designed based on the new system model. Simulation results show that this model is more closer to the actual vanadium flow battery characteristics, the control strategy based on low-pass filtering can stabilize the output fluctuations of the wind farm power.
Modified Direct Power Control for LCL-APF without Harmonic Current Detection
Authors: Li Zhi Yong , Luo Yu Xun , Shen Ling Fei
Published: October 2013

The active power filter with LCL filter (LCL-APF) possesses the advantages of wide bandwidth of compensation and a small amount of switching ripples. A direct power control (DPC) method of LCL-APF without harmonic current detection technology is proposed. Not only the complex detection of load harmonic current and compensation harmonic current is omitted, but also the total rate of harmonic distortion of grid side is reduced from 27.7% to 1.12%. To overcome the disadvantages of resonance caused by three-order LCL filter, the power of active power damping is added in the power controller. Thus, the dynamic control performance of LCL-APF is improved, as stable waveforms of grid current and power after 0.04s proved. Meanwhile, a modified DPC control loop is formed. Simulation results prove that the proposed method is correct and feasible. In view of the fact that it is rapid and accurate, especially the power level of 150kW, so it is suitable for the distributed generation system.
Design of Time-Domain Airborne Electromagnetic Full Bridge Boost Switching Power Supply
Authors: Han Bing , Yu Sheng Bao , Sun Han
Published: October 2013

According to the specific requirements of time domain airborne electromagnetic method detection system, a whole bridge high-power switching power supply is designed based on limited double pole control. Combined with the designed whole bridge topologies, its working process is discussed and the realization process of soft switch is analyzed. Through the specific experimental analysis, it can verify that the limited double pole control method can well realize zero voltage switch and zero current switch of the switch tubes, it can improve the work efficiency of the switching power supply. The power supply has been successfully applied to the scientific research project at present.
Research on Distribution Transformer Condition Assessment Method Considering State Variables Dimensionality Reduction
Authors: Liang Hai Feng , Liu Zi Xing
Published: October 2013

Compared with the transmission transformer condition assessment, less data is one of the major problems that limit distribution transformer condition assessment work. This paper intends to solve this problem through reducing state variables dimensionality. First, through analyzing the principle of every state variables of distribution transformer by use of the maximum Eigen-value approach, the core state collection of assessing the distribution transformer is formed and the state variables dimensionality is reducing. Then, the initial results of distribution transformer condition assessment are obtained by using core state variables. Thirdly, the sensitivity of the non-core state variables to the evaluation results is calculated. Finally, the initial assessment result is modified considering the non-core state variables change and the sensitivity to get the final result. Through the above proposed method, the evaluation process need only consider the core state variables and the change of non-core state variables. This method not only reduces the demand for data, but also ensures accuracy of the results using the sensitivity correction. The results of a condition assessment instance of distribution transformer verify the validity of the method.
An Improved Maximum Power Point Tracking Method
Authors: Zhao Xue Cheng , Zhao Yi Rui , Zhao Yu Hong
Published: October 2013

A duty ratio perturbation based on improved genetic algorithm is proposed in this paper. It can overcome some shortcomings of traditional MPPT method, and can perfectly achieve a real-time adjustment for maximum power output. A simulation model is established on Matlab, feasibility and validity of the method is verified.
A Design of SCR Three-Phase AC-Voltage Regulator Simplify Circuitry Based on STM32 MCU
Authors: Zhou Guo Shun , Ya Tu , Hua Shen , Zhao Shu Kun
Published: October 2013

This paper introduces a novel design of three-phase AC-voltage regulation trigger circuitry using silicon controlled rectifier (SCR), and presents its application in an energy-saving design of oil extractor control system. The design employs photoelectric isolation technique and the inter-phase of three-phase power supply itself, only three groups of triggering signals are required to control the six thyristors conducting angles. The generation of high-precision triggering signals and PID control regulator functions are realized by programming the multiple high-performance timers and the AD interface of a STM32 microprocessor. Experiments and in-field tests have shown the feasibility of the proposed scheme.
The Research of Model-Free Adaptive Control for Large Scale Wind Turbine
Authors: Yao Xing Jia , Zhu Jiang Sheng , Ma Kui Chao , Guo Qing Ding
Published: October 2013

Dynamic load is a key consideration in large scale wind turbine design. It is approved that the performance of controller can distinguish impact wind turbine loads. For strong external disturbances and inaccurately modeled of large wind turbines, In this paper, we propose model-free adaptive (Model Free Adapt, MFA) individual pitch control algorithms. The controller was developed in to mitigate the rotor unbalance structural load for variable speed wind turbine. The controller is designed from a nonlinear model of the system which takes into account the blades, shaft and tower flexibilities. Bladed software was used for the control strategy and traditional PID control strategy simulation comparison. The results show that the new control strategy can effectively stabilize wind turbine power output and reduce aerodynamic loads.
Study on Splitting Criterion Based on Improvement ucosφ
Authors: Yang Jian , Liao Qing Fen , Tang Fei , Wang Yi Fei , Zhou Yu Tian , Tu Lian
Published: October 2013

In this paper, according to the splitting criterion ucosφ, the effectiveness and boundedness of the improvement method is studied. As the oscillation center may be an isolated dot or exists in a section of the splitting, this paper has proposed the thought of false oscillation center and introduced the relative degree coefficient of oscillation k which reflects the degree of effect on the tie lines. The tie lines being cut off should be sorted based on the value of k. If the system recovers stable, the tie lines remained should not be cut off. It is vital to the control of the splitting and reducing the losses of accidents. In the end, the simulation is given in the IEEE 10 Generator 39 Bus System which proves the correctness and effectiveness of this method.
Dissipation Analysis of IGBT Module in FB-ZVZCS-PWM Converter
Authors: Liu Xian Zheng , Jin Rui , Yu Kun Shan , Xie Li Jun , Bao Hai Long , Zhang Yu , Liu Juan , Che Jia Jie
Published: October 2013

Along with the government and market take more and more attention to the energy efficiency of power supply, the loss of IGBT module, as the core device, has become a hot topic. Firstly, the dynamic process of IGBT module is analyzed, an accurate and an estimation method of loss calculate are provided, then the working process and resonant process of phase shift full-bridge soft switching converter is discussed, and constitute of IGBT module loss in the circuit is analyzed. Finally the loss is calculated in the 350A inverter welder example, and a conclusion of reliability and proposal for design are given according to the calculation results.
Improved Urban Transport Optimal Path Based on Ant Colony Algorithm
Authors: Zhang Jie , Fan Xiao Yan , Deng Zhuo
Published: October 2013

Based on ant colony algorithm, urban real-time traffic optimal path algorithm was designed through restricting search area and direction, making real-time distance as optimal path weights and regarding turning as the impact of weight value in Chinese traffic. The algorithm could calculate the optimal path through algorithm complexity test. The obtained path enabled user to reach destination within a short time and with the least fuel through actual traffic test. It is regarded as the optimal path.
A New 3DGIS Development Technology Research Based on the Sketchup and SuperMap Platform
Authors: Wu Bin , Duan Shi Kai , Liu Ling
Published: October 2013

Analysis the pros and cons with the current three-dimensional GIS development techniques, we proposed a new three-dimensional GIS development technology based on Google Earth, Sketchup and SuperMap software, to better achieve the virtual digital of the three-dimensional model. The Google Earth software gets the two-dimensional area to be modeling image which imports into Google Sketchup software, establishment of two-dimensional vector graphics, and then build roads and construction of three-dimensional models. Then, SuperMap component realizes the integration of spatial data and attribute data integration management, the realization of digital based on data collection, classification, storage of property data and management. Based on this, we applied the development technology to the virtual campus three-dimensional navigation system. In this, some technology flow charts are given. Finally, compared with some other three-dimensional GIS development technologies, a discussion and conclusion presented. We call to apply three-dimensional GIS navigation.
Design and Implementation of Image Acquisition and Processing for TFDS
Authors: Zhang Qing Lin , Sun Shi Lei , Qu Tao , Deng De Xiang
Published: October 2013

Some problems existed in IEEE 1394a camera of the Trouble of Moving Freight Car Detection System (TFDS), such as easy disconnection with electromagnetic interference, limited image resolution and low frame rate. To improve that, a GigE camera is used as a replacement. Images of GigE camera are acquired and processed using embedded system based on FPGA and DSP. First gray images are acquired and compressed by JPEG. Then compressed data is saved on hard disk and uploaded to the server in detecting center simultaneously. System construction is greatly simplified ,meanwhile the costs, volume and power consumption are also decreased. The system has worked with a stable status for a long period in the actual railway. The final tests demonstrate that the design is feasible of great application potential.
Research of PMSM Stator Current Collection System Design Based on C8051F500 and AD7865
Authors: Bai Gong Ding , Liu Jun Hua , Shan Wei Gang , Zhao Bo , Zhang Xue Mei , Bian Yong Chang , Wang Xin Zhong , Niu Zhen Qi
Published: October 2013

Permanent magnet synchronous motor (PMSM) now is widely used in hybrid vehicle drive area. When the space vector pulse width modulation (SVPWM) is used in PMSM control, the stator three phase currents must be collected for its control calculation. In this paper, a PMSM stator current collection system based on C8051F500 and AD7865 is designed, and proved to be effective with experiments.
Experimental Study of the Dynamic Performance of a Cable with a Detecting Robot
Authors: Xu Feng Yu , Chen Zi Xin
Published: October 2013

To analyze further the dynamic characteristics of the robotcable system, similar experimental models of cables on the Junshan Highway Bridge are constructed. To study the effect of high-altitude wind load on the safe performance of the cable and the robots climbing ability, transverse wind load is simulated and wind-load equivalent experiments on cable vibration are performed on the robot to simulate high-altitude conditions. Vibration amplitude and acceleration of the cable slightly increase under Grade 7 wind, which demonstrates the stability of the cablerobot system.
A 2.4GHz Radio-Over-Fiber Laser Diode Drive Amplifier in 0.18-um CMOS
Authors: Zheng Yi Lin , Chen Ying Mei , Gong Jian Wei , Yao Jian Guo
Published: October 2013

The design of a 2.4GHz radio-over-fiber (ROF) laser diode drive amplifier using TSMC 0.18-um CMOS technology is presented in this paper. The proposed drive amplifier is a single-ended two-stage amplifier with the operating voltages of 1.8V and 3.3V. The technique of dynamic bias is employed to enhance linearity. The post simulation results show that the linear amplifier achieves the power gain of 26.26dB, the output 1dB compression point of 20.49dBm at 2.4GHz. The maximum power added efficiency (PAE) is 27.97%. The components are all on chip including the input and output matching network, and the die size is 1.065mm×0.73mm.
Design of the Improved CPR Simulation Control System Based on Wireless Telemetry
Authors: Li Hong Na , Hua Yan
Published: October 2013

According to the new execution of 2010 International Cardiopulmonary Resuscitation (CPR) & Emergency Cardiovascular Care (ECC) Guide Standard above American Heart Association (AHA), this paper designs an improved CPR simulation control system based on wireless telemetry,deferent from the original CPR simulation control system based on SCM, the new design is a monitoring system based on wireless sensing method, with several wireless monitoring node and a wireless base station consists of a wireless receiving device and PC.The system can be applied to Life first-aid training for Maritime College, crew training center and the sea rescue team etc.
Research of Rain Attenuation of Ka-Band Satellite Communication System
Authors: Rong Li
Published: October 2013

Ka-band satellite communication system has some advantages including a large bandwidth, a huge capacity, a narrow beam, a small terminal size, which makes it a trend in future satellite communications. However, the system is now faced with great challenge-meteorological factors, which aroused suspicion among researchers about its realization. In this paper, the feature of rain fade is analyzed and several compensation methods are presented.
A Low Complexity Implementation in Hardware on Simplified Log-MAP Algorithm for T-TCM Decoding
Authors: Wang Jian , Li Jian Ping
Published: October 2013

A simplified decoding algorithm for turbo trellis-coded modulation (T-TCM) is proposed, which is easy to implement in hardware. The algorithm exploits a new piece-wise function to replace the logarithmic term of the Jacobian logarithm based on the MacLaurin Series. Simulation results show that the proposed algorithm can archive log-MAP-similar decoding performance with a much lower computational complexity. It can reduce about 40% of calculation in contrast to the improved MAX-Log-MAP.
Analysis on Reverse Intermodulation Generated by Co-Siting Multi Standard Base Stations
Authors: Li Xing
Published: October 2013

The reverse intermodulation interference exits among multi-standard base stations, it needs less than-114dBm/100KHz within a receiver band. A test method improved mechanism to measure IM3 (3rd order intermodulation product) during base station design, which made the test results better by reducing the nonlinear contribution from key component directional coupler in test environment. The new method changed hardware connection without any cost. Improved test mechanism can detect low level IM3 beneath-138dBm/100KHz in RX band.
The Structure Design of Low Frequency Electromagnetic Induction Heating System Based on Analysis of Thermal Effect
Authors: Liu Jian , Wang Xin , Wang Shu Mao , Fu Han
Published: October 2013

The low frequency transverse magnetic electric induction heating system uses high penetration of low frequency electromagnetic induction heat objects, which is new and high efficient. Due to the magnetic fluxing through objects transversely, it is different with other electromagnetic induction heating methods and this makes it applied more widely. And in this paper, we present the application of low frequency transverse magnetic electric induction heating system in the technique of the lock temperature on seamless line. With the analysis of heating efficiency, it also combines the theory of eddy current loss calculation with the verification results of finite element calculation and introduces the structure design of this system then. Keywords: low frequency electromagnetic induction, continuous welded rail, the lock temperature on seamless line, finite element
Research of Autonomous Navigation Path Planning Based on the Sage_Husa Adaptive Filter for Mobile Robot
Authors: Liu Yun , Zhao Dean , Zhang Jun , Zhang Yun
Published: October 2013

By applying data fusions from GPS and MEMS sensors to plan and track path, and achieve the goal of mobile robot autonomous navigation. An improved filtering method based on Sage_Husa filtering is described, which can effectively restrain the filtering divergence, improve dynamic performance of filter, enhance stability and adaptability of filter, and improve navigation precision. With fuzzy adaptive PID control, the stability of control system is guaranteed with control strategy adjustment in real time. Finally, it is programmed that converting the fusion of high-precision GPS and attitude information into control command so as to succeed in robot navigation and real-time display on map. The feasibility and effectiveness of methods described above are verified and proved by experiments and MATLAB simulation.
The Research on Static Characteristics of 1700V/100A Planner NPT-IGBT
Authors: Gao Ming Chao , Liu Jun , Zhao Ge , Liu Jiang , Jin Rui , Yu Kun Shan , Bao Hai Long
Published: October 2013

A 1700V/100A NPT-IGBT was designed by process simulation, which had an internal transparent collector and a planner cell structure. The Static characteristics were studied. The simulation results show that the threshold voltage of the device can be adjusted by changing the injection dose or the drive-in time of the p-well. The saturation voltage of the device can be adjusted by changing injection dose of the p-well or the internal transparent collector. This device was fabricated using a self-aligned process, the test results show that the breakdown voltage is more than 2100V, the saturation voltage is between 2.5V and 2.7V and the threshold voltage is between 3.9V and 5.9V, which are similar with the simulation results.
The Protection Strategy of Data Security Based on JAVA Stream Filtering
Authors: Lin Jian Bing , Zou Jin An
Published: October 2013

With the development of the computer network and communication technology, some important information is used to infringe upon by using the Internet and associated communications technology. The paper analyzes briefly the principle of the JAVA stream filtering and data security protection strategy on network of multi-level, then takes some safety measures for data protection by using the JAVA stream filter, mainly focuses on the network transmission of the socket data, in order to protect the security of data, and discussed some related problems of data encryption, finally gives the safety results.
Research on Data Integration in Dataspace
Authors: Jiang Shuo , Yu Shuo Jian
Published: October 2013

Dataspace integration is the basis of building dataspace. The new features of data were discussed. Theory of dataspace was researched. The structure of dataspace integration was proposed by analyzing the characters of dataspace. Dataspace integration was researched deeply by data model, correlation and relationship discovery.
Network Security-Related Technology Research and Implementation
Authors: Ruan Jun , Zhang Pan , Ding Hong Bi
Published: October 2013

With the rapid development of computer network technology, global information has become mega-trend of modern social development. But due to all kinds of defects existing in the network itself and variety and openness of network interconnection form, network security has become the focus of social attention. So in this paper, a lot of current advanced network security technologies and products are used in order to make network security, which is under the general principles of network security situation.
Application of Two Dimensional Bar Code in One-Way Transmission System
Authors: Du Jiang , Zheng Ning
Published: October 2013

In the physical isolation network, users usually adopt the one-way transmission system to transmit data from low confidence network to high confidence network. But due to the one-way strictly, one-way transmission system can’t transmit the feedback message from high to low confidence network. What’s more, there are some imperfections in the SMS feedback mechanism and artificial feedback mechanism. Aiming at this issue, we put forward and introduce an improvement feedback mechanism based on the artificial feedback mechanism and the two dimensional bar code, at the same time , we illustrate the advantage of the design and implementation about our mechanism.
Design of Cloud Computing Resources Based on Web Access Model
Authors: Wu Jing , Zhao Feng Zhi , Dong Yu Dan
Published: October 2013

Cloud computing is a term within coined within the past several years. The mere mention of the term may cause confusion or disagreement on the scope of cloud computing. This paper provides out of a large resources, and charging according to the actual amount of resources consumed is a shared characteristic of cloud computing.
An Enterprise Data Integration ERP System Conversion System Design and Implementation
Authors: Huang Xin Xing , Zhu Wei
Published: October 2013

For old and new systems data integration of the functional requirements, design and develop the data conversion module, satisfied with the development of new systems based on the existing system for data integration process, the offsite data across heterogeneous systems level ERP system needs to synchronize data. The module has been designed and implemented in the enterprise ERP system has been its application.
Implementation of Synchronous Tracking Control with Multiple Hall Switch Sensors Based on PLC
Authors: Li Shang Rong , Zhang Wei Ping
Published: October 2013

Positioning control is widely used in many fields of applications, such as CNC machine tools, robotic motion control. This paper presents a novel method for position offset detection with a multi-switch type Hall sensors and a control design of tracking the moving object system based on PLC (programmable logic controller). The experimental results showed that the Hall switch sensor could follow the magnets in the different position without departing from each other when the rotating speed of the magnets is no more than 100 [rpm].
The Study on a New Method of the Electronic Large-Scale Symmetric Structure Simulation
Authors: Li Li , Wang Xiao Bing , Tong Guang De , Liang Zi Chang
Published: October 2013

The electromagnetic properties of the material have been paid much attention as time goes by. The electronic large-scale material simulation is always a big problem. Parallel processing simulation codes is a good choice and a new method is proposed to simulate only one quarter of the structure and finally a small structure patch antenna with wide material is introduced to validate the method.
Self-Matching Space Tracking Ship Data Structure Design
Authors: Li Hui Feng , Zhu Wei Kang , Xue Guo Hu , Chen Hong Ying , Di Li Ping
Published: October 2013

This paper works on the general design of tracking ships system software structure with an eye to the complexity of information source of maritime tracking, and illustrates the design technique, methods and application examples in its realization. In this paper, a separation of system software function from specific data format is proposed to adapt to the difference in data structure resulting from each tracking ships unique equipment position and parameters. The difference in data structure is represented by parameters. The format information passed by parameter files is recorded by equipment sequence structure. A parameter program configuration is utilized and through real-time tracking data the allocation of system software is finished. The system can automatically adapt to data of different structure and treat all formats without rectifying software. The application software system designed in this conception has been used till today without major adjustments in its main structure. All changes can be adjusted via data files and in this way realizes adaptive processing.
Research of Low Voltage Grid Harmonic Analysis Based on DSP
Authors: Guan Xiao Chun , Chen Xiao Jing
Published: October 2013

In recent years, with the rapid development of smart grid, the harmonic monitoring has become an important part of electric energy quality control in smart grid. This paper introduced a method for real-time analysis of the harmonics with high precision, in which the FFT algorithm is used to convert the electrical signals from the time domain into the frequency domain to analyze the harmonics based on the TMS320F2812 processor. The experiment was conducted based on Code Composer Studio CCS3.3 and EVM board HDSP-Basic2812. The experiment simulation results were given in the paper.
Weighted LDA Based Dimensionality Reduction for Ultrasonic Flaw Signal Classification
Authors: Yang Peng , Tian Yang Yang
Published: October 2013

Ultrasonic inspection is the most successful non-destructive testing technique for detection of flaws in engineering materials. Generally, discrete wavelet transform (DWT) is widely used to extract features for ultrasonic flaw signal. Directly taking the DWT coefficients as input vectors for training classifier, however, may result in computation complexity or even poor classification performanc. We propose a weighted linear discriminant analysis (WLDA) method to address the problem. In this study, DWT is first applied for the time-frequency analysis of ultrasonic flaw signals, and the wavelet coefficients are extracted as the initial features. After that, the proposed WLDA, which can effectively estimate the within-class and the between-class scatter through calculating similarity based weighting function, is used to reduce the dimension of original features. Finally, the features in new lower dimensional space are taken for flaw classification. Experimental results show that compared with the original and state of art linear discriminant analysis methods, WLDA is helpful for improving classification performance.
Design, Modeling and Simulation of a Novel Omni-Directional Steering System
Authors: Li Xiao Pei , Zhang Zu Tao
Published: October 2013

This paper presents a novel omni-directional steering system for electric vehicle. In order to guarantee the stability and the steerability of the electric vehicle, the proposed novel steering system consists of 2 conditional front wheel steering configuration and 4 wheel omni-directional independent steering configuration. The design of the 2 conditional front wheel steering configuration can guarantee the stability and the steerability of the vehicle. And the four wheel independent steering can achieve omni-directional motions such as zero radius turning (ZRT) and later parking (LP). This system was tested in simulation environment, and the last performance evaluation demonstrates the validity of the proposed omni-directional steering system.
A Design Method for Management Information System Based SOA
Authors: Ma Quan Fu , Liu Guo Ling
Published: October 2013

This paper studied the Service-oriented software architecture. Recently service-oriented architecture is a research hot because it is open and flexible. But all people only concern its application in a certain field. Almost no one puts forward a general method for various field systems. Also there are no service-oriented developing software and tools. This paper proposes a service-orientation solution to the management information system based on SOA (Service-oriented architecture). Business process can be designed by interactive interface library. Users can complete the design of system by simply dragging the mouse. For various systems it is an efficient method because business process can be designed by interactive interface.
A Method of Data Integration Based on Cloud
Authors: Liu Guo Ling , Yang Chun Hua
Published: October 2013

This work studied the situation of today’s data integration. To better solve the complexity and diversity in data integration, we propose a new idea of data integration service platform based on SaaS. The model architecture of data integration and its work principles are introduced. In the platform source data and result data are two interface.in the form of service. In the data integration platform, data are filtered and combined. the data are produced by the users’ requirements. Users call SaaS service to get the data that they wanted. Finally we analyze the model’s characters. This model of platform is more intelligent, efficient and personalized in solving complicate data integration.
Parameters Optimization for Injection Molding Based on Digital Signal Processing
Authors: Xie Wen Ling , Zhou Shun Yong , Hu Yong
Published: October 2013

The parameters optimization for injection molding based on digital signal processing is gave in this paper. First, design the optimization program of injection molding parameters with orthogonal test; Second, gating system, cooling systems and related injection molding process parameters are chosen as the experimental analysis factors to optimize injection molding process, and analyze the range and variance of test data by MATLAB, to determine the factors that affect the forming quality of the process significantly; Third, the model of process optimization is established by regression analysis; Finally, the optimal process parameters is found by genetic algorithm. The experimental results shown this optimization method can achieved the best parameters for practical produce. So, the method has important practical significance.
Numerical Simulation of Residual Stresses Induced from Shot Peening with Finite Element Method
Authors: Cao Li Juan , Li Shou Ju , Shangguan Zi Chang
Published: October 2013

Shot peening is a manufacturing process intended to give components the final shape and to introduce a compressive residual state of stress inside the material in order to increase fatigue life. The modeling and simulation of the residual stress field resulting from the shot peening process are proposed. The behaviour of the peened target material is supposed to be elastic plastic with bilinear characteristics. The results demonstrated the surface layer affected by compressive residual stresses is very thin and the peak is located on the surface.
Augmented Reality for E-Commerce
Authors: Shen Wei
Published: October 2013

The combination of augmented reality and e-commerce has enabled the latter to be more digital, intelligent and humanized. The paper discusses relevant theories regarding augmented reality, elaborates the status of applications, key technologies and problems existing in e-commerce field, and analyzes the development prospect of mutual promotion between augmented reality and e-commerce.
CFD Based Study of Hydraulic Performance of an Air-Conditioning Drainage Pump
Authors: Nie Xin , Yang Ding Guo
Published: October 2013

This paper introduces a minor drainage pump used in air-conditioning system. The numerical simulation has been done to analyze the internal flow field and sound pressure level in drainage pump. FlUENT is used in this paper. And LES (Large Eddy Simulation) is taken to catch the pressure fluctuation in this flow passage. CFD results show that pressure fluctuation is the main sound source in the pump.
RSDA-PID Control on Synchro-Motion System with Four Cylinders
Authors: Ni Jing , Wu Jun Chen
Published: October 2013

Considering that synchro-motion performance of four cylinders was influenced by flow allocation of one to more pipes, a nonlinear dynamics model of electro-hydraulic servo system with four cylinders was presented. Then a RSDA-PID synchro controller for electro-hydraulic servo system with four cylinders was provided with PID control, fuzzy control and RSDA(rough set data analysis) theory. This controller based on the equivalent synchro-motion control strategy. The simulation and factual applications show that the proposed control approach has better tracking and synchronization performance than that of conventional control strategy.
Steam Flow in Nozzle and the Nozzle Calculation
Authors: Wang Ya Rong , Wang Pei Rong
Published: October 2013

The adiabatic flow process of gas or steam in a nozzle is not only widely used in steam turbines or other power equipment, but also applied to ejectors, impeller-type compressors, burners and other thermal devices in air conditioning, ventilation and gas engineering. In this paper we will describe steam flow in nozzle and the nozzle calculation, especially the relationship between the flow velocity and the flow area. We will describe the calculation on the velocity through a nozzle and the calculation on the area of the nozzle by an example.
Simulation Analysis of Viscous Effects on Dynamic Performance of Hypersonic Vehicle
Authors: Dou Li Qian , Shen Yu Ye , Sun Bin
Published: October 2013

In this paper, viscous effects on hypersonic vehicle are investigated. Firstly, viscous aerodynamic is modeled based on reference temperature method, and viscous aerodynamic lift, drag and pitching moment are calculated by the model. And then, aerodynamic forces and elastic deformation are analyzed by comparing with viscous effects on/off. In final, considering the thermal choking condition, longitudinal velocity and attitude boundary values are discussed.
Thermal Bending of Laminated Composite Plates by a Meshless Method
Authors: Xiang Song , Chen Ying Tao
Published: October 2013

The thermal bending response of laminated composite plates has been studied by the use of various higher order shear deformation theories of Levinson, Touratier, Karama and Aydogdu. The governing differential equations are discretized by a meshless method based on inverse multiquadric radial basis function. The center deflections of laminated composite plates subjected to sinusoidal temperature distribution are solved and compared with available published results to assess the performance of the present method.
Interfacial Reaction Thermodynamics between Sn-Cu-Ag Solder and Ni Substrate
Authors: Xu Hong Yan , Wu Hu , Xu Bing Sheng , Wu Yan
Published: October 2013

Interfacial reaction during wetting and spreading of Sn-Ag-Cu solder on Ni substrate is a key factor in order to improve the mechanical properties of the joints and the weld quality. Therefore, it’s important to focus on the thermodynamic and kinetic analysis of this interface reaction. In this paper, the sessile drop method was used to study the spreading contour evolution. The Kissinger method was used to calculate thermo-kinetic parameters of reactions between Sn-Ag-Cu solder and Ni substrate based on DTA data. The results show that Cu reduces activation energy and reaction rate of Sn-Ag-Cu/Ni system. (Cu, Ni)6Sn5 phase mainly constitute the interface reaction layer of Sn-Ag-Cu/Ni. As the temperature increases, partial (Cu, Ni)6Sn5 phase is substituted by Ni3Sn4 phase.
Corrosion Behaviors of U75V, U76CrRE Heavy Rail Steel in Simulated Industrial Atmosphere
Authors: Wang Xiao Li , Song Bo , Li Yang Bing , An Sheng Li , Peng Jun , Fu Guo Ping
Published: October 2013

The corrosion of heavy rail steel is severity in south. Now there are not studies on the corrosion of heavy rail steel in atmosphere. The corrosion of heavy rail steel were studied by periodic infiltration corrosion test and electro-chemical testing technique in simulated industrial atmosphere. The result showed that U76CrRE has apparently more excellent anti-corrosion ability than that of steel U75V. The Cr and Re in U76CrRE enriched in local of base that promotes the rapid generation of α FeOOH and the increase of content. Thus the ability of the rust layer against the corrosive media from entering the layer was improved. Anti-corrosion capacity of heavy railroad steel in industrial atmosphere can be improved significantly by adding Cr and RE alloy.
Automatic Wood Classifying System to Produce Renewable Fuels from Construction Waste
Authors: Oh Sung Hoon
Published: October 2013

Automatic wood classifying system was developed to sort wood only from construction waste such as vinyl, plastic, and wood in order to produce renewable fuels. Automatic classifying processes are performed in the following order, step1: crushing, step2: analysis in the form of a mixture with water, step3: collection and transporting of floating materials, step4: classifying float materials with blower system. To classify a mixture of wood that are classified by air wind volume and classifying wood reliability can be varied depending on air wind volume. And, vinyl and plastic are difficult to classify due to increase in weight with water during the processes. Therefore, the number of times the experiment was repeated to get the optimal air volume to control it. In this experiment, the air wind volume is very important part.
Effect of Material Properties on Cross-Section Deformation during Bending an Aluminum Extruded Section
Authors: Hamano Hidemitsu , Watari Hisaki
Published: October 2013

The cross-section shape change was investigated to determine the effects of proof stress, r value, wall thickness, and cross section in push-through bending of a square extruded pipe. Extruded A6063 aluminium alloy (40×40×2.0 mm) was used in the experiment. The push-through bending machine used has a six-axis NC controller. In this study, a two-dimensional single curvature shape was adopted in order to investigate the fundamental bending properties. A high-proof-stress material with severe bending workability was examined in this experiment to clarify the effect of bending workability on the material properties. Workability was evaluated by examining wrinkles and shape change of the cross section; the change in thickness was also evaluated, as were n and r values. The results are as follows. The high-proof-stress material was bent, resulting in significant cross-section deformation. The size of wrinkles caused by bending increased due to the large bending radius, and the wrinkles produced were deep. The effect of the r value on the cross-section deformation after bending could not be determined. In the present experiment range, the bending limit was determined by the size of wrinkles in internal bending. In A6063-T1, the wall thickness had a significant effect, and the forming limit of the thin-walled material was low. The bending limit was low for A6063-T5, and the effect of the wall thickness was slight. The bending limit of a 60×60mm cross-section piece was considerably lower than that of a 40×40 mm cross-section piece, for the same wall thickness; it was particularly significant in A6063-T5.
Study on Cutting Tool Edge Location in the Process of High-Speed Rotation
Authors: Zhao Chang Long
Published: October 2013

Cutting tool will arises the hot transmutation in the process of high-speed rotation, in the paper we use the non-contact image acquisition processing system to fix the position of the cutter blade edge basis on the center of gravity method and quadratic curve fitting, this method get rid of disadvantages of traditional contact measurement, have the advantages of high accuracy and calculation simple.
Model-Based Analysis of Reflection-Mode Fiber Hydrogen Sensor
Authors: Liu Ming Yao , Liu Yi
Published: October 2013

Researchers have successfully prepared reflection-mode hydrogen sensor by coating Palladium (Pd) alloy in the end of the fiber and it has been proved to be in good effect. Characteristics of the hydrogen sensors are influenced by several factors, such as thickness of thin film, substrate, light wavelength and the film material, etc. For best performance, an optical model of reflection-mode fiber hydrogen sensor is established. The effecting law of each factor is analyzed and discussed through model-based simulation method. The results can provide credible design methods for the reflection-mode fiber hydrogen sensor.
Representation and Fabrication Method for Multiple Gradients FGM Part Based on Additive Manufacturing
Authors: Zhang Zheng Yan , Chen Ding Fang , Hu Ji Quan , Wang Xiao Ping , Chen Ping
Published: October 2013

A simple FGM object with one gradient direction is easily fabricated by the current technique; However, how to fabricate multiple gradients FGM objects is rarely mentioned by some related papers. This paper proposed a representation and fabrication approach to deal with this problem. This approach, termed as minimum fabrication cell (MFC) or allowance fabrication cell (AFC), focus on fabrication of multiple gradients FGM object. In MFC, an arbitrary 3-D model is adaptively sliced into a series of 2-D layers, and each layer is subdivided into a series of MFC or AFC along toolpath. The three linear interpolation is applied to calculate the material for each MFC or AFC, and gradient contribution ratio (GCR) is applied to calculate the material for each vertex on the MFC or AFC.
Preparation Technology of Al-Fe-V-Si Heat-Resistant Aluminum Alloy with Single Roller Spinning Method
Authors: Tang Jin Jun , Gong Zhao Hui , Fei Liang Jun , Zhu Xiu Rong , Shi Hong Xia
Published: October 2013

High strength aluminum alloy is mainly traditional alloy hypoeutectic composition, containing the solid solubility of alloy elements atomic fraction is greater than 2, and reached the alloy trengthening effect by the precipitation of intermetallic compounds in the process of aging. But in more than 150°C, the precipitated phases coarsening, the material performance dramatically, thus limiting its use scope. In the preparation process, the planar flow casting process will melt thrown by 35-80um thick slices with, because the cooling speed can reach 105K/s the process of melt, so the microstructure is very fine, after extrusion. Grain size of about 1um, precipitates spherical and uniform distribution, the size of about 50nm, Al12(Fe,V)3Si phase coarsening rate is low, so the alloy has comprehensive mechanical performance and excellent high temperature stability.
Development of Pneumatic Press Stroke Control through the Application of a Horizontal Cylinder
Authors: Oh Sung Hoon
Published: October 2013

Developed the pneumatic press machine with a controllable precision stroke through this study. Conventional pneumatic presses cylinder installed in the vertical direction to deliver the power, but in contrast to conventional approaches, it is applied a horizontal cylinder by installing a pressure sloping portion, so that the cylinder power delivers to the vertical direction. This reduces the height of the press, transmitting the power of the cylinder controlling the straight length of the piston by moving regulator so the stroke of the press can be precisely controlled. In addition, in the press manufacturing by changing a driving cycle for the safety of workers and the working environment is improved.
Reconstructing of Mechanical System of Certain Centrifuge
Authors: Liu Qian , Deng Zhi Gang , Xiong Xin
Published: October 2013

In this paper, the purpose and content, implement project and test of reconstructing of the centrifuge have been introduced. The main idea of reconstruction is that on the condition of reserving driving electromotor, main transmission system, supporting system and arm of centrifuge, timing system, monitoring system and assistant transmission system have been replaced, and the synchronization measure weight system is supplied to measure the centroid of the arm of centrifuge, in the meantime, the oil is supplied to the nacelle of centrifuge in order to make the centrifuge have the ability of complex test. In the result of aborative design, the centrifuge has higher level and ability of environment test after the reconstruction.
The Finite Element Analysis of Gasoline Engine Turbocharger Key Parts
Authors: Liu Xiang Ling , Liu Meng Xiang , Gong Jin Ke
Published: October 2013

A geometric model and finite element grid model of JQ40A gasoline engine turbocharger were set up based on the CFD software NUMECA. And the stress, deformation and vibration modal analysis on turbocharger’s compressor impeller, turbine and integrated turbine box was carried out by software ANSYS. The result shows that thin blade impeller design, weight reduction design of the turbine is beneficial to reducing the maximum structural stress, deformation and rotation frequency. The integrated design of the exhaust manifold and the turbine housing is helpful to reducing the flow resistance and the vibration frequency, so as to effectively avoid the resonance region, ensure turbocharger’s reliability and make for enhancing aerodynamic performance. Research methods and conclusions which are of important theoretical significance and practical value, provide basis for optimization design of turbocharger.