bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Limit-Trajectory Over-Modulation Strategy of Two Stage Matrix Converter
Authors: Lu Jing , Shen Ming
Published: August 2014

Aim at solving the problem is poor quality of waveforms and that of complicated modulation strategy in two stage matrix converter. The method is that Limit-Trajectory over-modulation strategy is adopted in inverter to ensure linear modulation in all over-modulation regions and space vector pulse width modulation is adopted in rectifier. This simpler control algorithm reduces memory space and linear calculation is instead of look-up table. Simulation show that the voltage transfer ratio can be improved from 0.866 to 0.95 and the quality of output waveforms is greatly enhanced.
Study of Archives Information Development Based on SWOT Analysis
Authors: Zhang Feng Li
Published: August 2014

Based on the rapid development of information technology and wide application, using the SWOT analysis method, combined with the status quo of information development in our country, it is done that the strategic analysis of advantage factors, archives information development in the disadvantages, opportunities and threats, and some strategies and suggestions are put forward for the development of our country's archives information.
Study of the Simultaneous Generation of UWB Doublet and Triplet Signals Based on Nonlinear Effects of SOA
Authors: Chen Xin Qiao , Zhang Yu Chen , Tang Lin
Published: August 2014

A scheme that can be used to generate UWB doublet and triplet signals simultaneously based on SOA-SGS and SOA-XGM is carried up, then the theory is analyzed. Simulated through Optisystem9.0, a UWB doublet signal whose central frequency is 6GHz and relative bandwidth is 143% and a triplet signal whose central frequency is 8GHz and relative bandwidth is 120% are generated. Then, the impacts that input pulse width and light source power impose on the results is analyzed.
The Study of Harmonic Suppression and Reactive Power Compensation
Authors: Liu Yun Jing , Zhang Xiong Wei
Published: August 2014

With the development of modern industry, more and more semiconductor-based devices have been used widely. Such equipment presents nonlinear impedance to the utility, generating large harmonic currents with well known adverse effects, such as low power factor, low efficiency and destruction of other equipment. Also, some precision instruments and communication equipment will be interfered. Therefore, utility power quality has become an important issue recently. This paper presents a hybrid active filter including two functions: current harmonic detection and reactive power compensation. The current harmonic detection is based on. The reactive power compensation utilizes the measured voltage and the estimated fundamental current to calculate reactive power. After the above information has been calculated, the corrective current reference signals can be generated for the active filter. In this way, the two control functions are integrated together so that one active filter can accomplish two functions simultaneously. The system is modeled in MATLAB SIMULINK to consist of the non-linear loads, with a hybrid active filter to compensate for the harmonic current and reactive power. The simulation results show that the proposed hybrid active power filter has the expected performance.
The SWOT Analysis of the Application of Cloud Computing to Archives Informatization
Authors: Zhang Feng Li
Published: August 2014

The emergence and development of cloud computing has brought about great change in the whole society. Using the method of SWOT analysis to analyze strengths, weaknesses, opportunities and threats of cloud computing in the development of archives informatization,.Considering internal and external factors and overall planning the development strategy of the application of cloud computing to archives informatization to speed up the development of archives informatization in our country
Ultra-Low Frequency Difference Signal Multiplication Based on PLL
Authors: Zhang Man Rong , Song Kai Chen , Ye Ling Yun
Published: August 2014

Ultra-low frequency difference signal is difficult to detect and process because it is easily mistaken for noise. This paper presents a method based on low-jitter PLL to detect ultra-low frequency signal. A low-jitter PLL circuit has been designed and the performance has been investigated through simulation. The jitter is as low as 10-12s. The optimized low-jitter PLL can be used for the multiplication of ultra-low frequency difference and improve the measurement accuracy substantially.
Research on the Iterative Stopping Criterion Based on Linear Turbo Equalization
Authors: Yao An , Chen Zi Li
Published: August 2014

Although turbo equalization has superior performance, the data processing delay produced by large iterations has become its major drawback for real-time situations. Based on the MMSE criterion, the normal-probability-plot (NPP) of linear equalizer’s extrinsic information is studied in this paper, with the conclusion of the extrinsic information’s approximate Gaussian distribution obtained. In various conditions, the iterative number can be controlled dynamically based on the extrinsic information statistics. The simulation results approves that the technique is able to make delay dwindle largely with small performance degradation.
Design and Implement of a Computer Forensics Model for Cloud Environments
Authors: Chen Hai Yan
Published: August 2014

With the maturing and wide application of cloud computing technology, there are more and more crimes in the environment of cloud computing, effective investigation of evidence against these crimes are extremely important and urgent. Because it features the characteristics of computing environment of virtual, mass storage, distribution of data, multi-tenant and so on, the cloud calculating sets an extremely hard condition for investigation of evidence. For this purpose, this paper presents a reference evidential model for cloud computing environments, and it also discusses the implement to the four aspects of computer evidence.
Design of Wave/Tide Simulate Apparatus’ Control Software Based on Free Port Communication Protocol
Authors: Guo Jun , Ye Song , Wang Xiao Lei , Ma Xiang Hui , Su Teng
Published: August 2014

For the functional requirements of motion control in the new wave / tide testing and verifying system, the free port communication protocol between the PC and the master controller is developed, and the control software programmed in Matlab is prepared, so the handling and data acquisition to wave / tide simulate apparatus (hereinafter referred to as simulate apparatus) is realized. The results of testing on prototype show that the control software based on free port communication protocol is reliable, stable and functioning well, meeting the needs of testing, experimentation and data analysis in the development.
Image Decomposition and Inpainting Based on Besov and Hilbert-Sobolev Space
Authors: Liu Zhu Qin
Published: August 2014

An image is decomposed into structure and texture adopt Meyer model , In order to more effectively express the characteristics of the image ,a schem is proposed that structure and texture described use Besov space and Hilbert-Sobolev space respectively,and different inpainting methods is adopt for structure and texture .Experimental results show that the algorithm calculated simple, easy to implement ,Smoothness and structure information, such as the basic characteristics of the image portrayed to meet the application requirements and inpaint results in low signal-to-noise ratio, the visual effect is superior to the similar method.
The Diagnosis Research of Cover Sheet Spring Recover on the Compensate Fuzzy Nerve Net of Multi-Input Defer
Authors: Liu Zhan Jun
Published: August 2014

The model of compensate fuzzy nerve net on multi-input defer is built. The net frame and studied algorithm of compensate fuzzy nerve net on multi-input defer is introduced .It is used that practical use on multi-input defer and higher containing mistake of compensate fuzzy nerve net, and it is given that the building model error tortuous surface, curve of net input and curve of all error number curve, which is combined with goal example. The result is showed in spring recover of cover sheet that the all error of compensate fuzzy nerve net on multi-input defer is reduced by 7.5 percent, and diagnostic precision is increased by 6.3 percent.
Novel Algorithm for Calibrating Speed-Density Model Parameters in Mesoscopic Traffic Simulator
Authors: Li Xiao Long , Song Wen Wu , Jiang Zhu
Published: August 2014

This article is on the basis of the classical speed-density model which combines with the complex road traffic flow, to raise a way that using the weighted regression to calibrate speed-density model parameters in mesoscopic traffic simulator. After processing detector data, the densities are taken as the variables; locally weighted regression is used to build a nonparameter relationship for the number of the traffic flow, to calibrate the vehicle speed. The test with a huge amount of factual data shows that the methods proposed in this paper outperforms the common optimal algorithm: simplex method in the vehicles speed estimation precision, and can accurately descript the dynamic change regularity of the road traffic flow.
Double Sided Explosive Cladding of Stainless Steel and Regular Steel
Authors: Miao Guang Hong , Ma Hong Hao , Shen Zhao Wu , Yu Yong
Published: August 2014

In order to ensure the quality of charge, honeycomb structure explosives was designed to resolve the current issue about the backward method of charge; Explosives with structure of honeycomb and double sided explosive cladding are used to increase of energy efficiency of explosives and save the amount of explosives. In this paper, the experiment of double sided explosive cladding for stainless steel and regular steel was successful investigated. Compared to the existing explosive cladding method, the consumption of explosives for stainless steel to steel of Q235 are reduced by 77% in the case of cladding the same number of composite plates.The explosive cladding parameters were calculated before experiment. It has shown that the calculated parameters prefigure exactly the explosive cladding windows for stainless steel/regular steel.
The Application of Tolerance Database in the Secondary Development of SolidWorks
Authors: Chang Qing Qing , Li Xue Mei , Zhou Hong Wei
Published: August 2014

Visual C++6.0 is selected as development tools while Access 2000 of Microsoft is used to build database, and the technology of ADO is adopted to achieve the connection between them. Though the secondary development of API function provided by SolidWorks, the query module is taken as a plug-in integrated in SolideWorks, which achieves the automatic query.
A Novel Nonlinear Time Series Prediction Method and its Application in Structural Vibration Response Prediction
Authors: Lin Yi , Yan Hong Sen , Zhou Bo
Published: August 2014

A novel nonlinear time series prediction method is proposed in this paper. This prediction method is based on the Multi-dimensional Taylor Network. The structure of the Multi-dimensional Taylor Network is introduced firstly. The Multi-dimensional Taylor Network provides a new method to predict the nonlinear time series. The prediction model based on the Multi-dimensional Taylor Network can realize the prediction of the nonlinear time series just with input-output data without the system mechanism, and it can describe the dynamic characteristics of the system. Finally, the new prediction method is applied in the structural vibration response prediction. Results indicate the validity and the better prediction accuracy of this method.
Analysis and Simulation to the Anti-Jamming Performance of the CCSK Soft Spread Spectrum System
Authors: Li Hong Ling , Huo Jing He , Wu Jin Liang , Yang Jian Kang
Published: August 2014

The soft spread spectrum realizes its function through the Cyclic Code Shift Keying (CCSK) which is not distinguished from the direct spread spectrum system (DSSS) in more literature. In this paper, the performance of the soft spread spectrum with the single-tone jamming is analyzed and simulated compared with DS. The conclusion is drawn that the capability of the anti-noise is obvious but declined seriously to the man-made interference.
Experiment Research of Laser Induced Air Breakdown
Authors: Wu Hai Dong
Published: August 2014

The principle of laser induced air breakdown was introduced. The laser energy conversion in ionization process was studied. The phenomenon of laser induced air breakdown was observed by using high speed camera. It was found that a higher laser energy induced more laser energy to transfer into light and sound energy. The plasma reached maximum in shape in about 20 to 30 ns after laser excitation, and disappeared in about 16μs.
Research and Practice of Teaching Reform of Wireless Network Technology Course for Internet of Things Specialty
Authors: Yang Huai De
Published: August 2014

As a core course of the Internet of Things specialty curriculum system, wireless network technology course is difficult to learn. The main reason is that learners can not do experiment at any time anywhere because of no equipments for experiment. In order to solve the difficulties discussed above, a network simulation system named ENSP is introduced in this article. ENSP mainly simulates enterprise routers, switches as close to the real hardware as it possible, which makes the lab practice available and easy without any real device. So it provides great convenience to wireless network researchers. The application of the network simulation system is putting the theory of “teaching-learning-doing” into practice. It can enhance the students learning interest, and also obtained the good teaching result.
Study on the Cultural Construction of College Archives
Authors: Wang An , Zhang Xiang Qing
Published: August 2014

College archives record the real process of higher education along the way,including progress in all aspects, such as classroom teaching, management planning, scientific research and innovation. For universities, it is not only the witness of hard sweat of countless staff in school history, but also the precious wealth. With the development of higher education, college archives cultural functions also gradually reveal except the function of historical record. The paper discusses how to play the function of archives culture to speed up the construction of colleges and promote the culture of college.
A Study of Simulation of Hydropreumatic Suspension Experiment Rig Based on AMESim and Matlab/Simulink
Authors: Chao Zhi Qiang , Ning Chu Ming , Li Hua Ying
Published: August 2014

By analyzing the mechanical and control module of electro-hydraulic servo control system of hydropreumatic suspension experiment rig, and finding the corresponding mathematical model, and constructing a controller with fuzzy PID control algorithm, and then using AMESim with the accurate modeling of the hydraulic system and Simulink with powerful data analysis and processing functions for system to simulate to verify the experiment rig excellent control performance, which can effectively provide a scientific basis for the optimization of vehicle safety and comfort.
Design and Implementation of University Administrative Management System
Authors: Yang Chun Yan
Published: August 2014

This system combines the actual administrative system , after the actual needs analysis, using the powerful Visual Basic 6.0 development tools and developed as a stand-alone management system. The entire system from the simple , user-friendly, flexible , practical and safety requirements , the management system has the following features: input, modify employees' basic information , query, delete module , employee leave of information input, modify, query , delete module , entry employee salary information , calculations, queries, and users of the system settings and system maintenance functions.
Risk Assessment and Countermeasures of Occupational Fraud Conduct in Corporate Construction Projects
Authors: Dai Yi Lan , Chen Lei
Published: August 2014

Risk management has been a part of enterprise engineering construction projects. Since previous studies mostly analyzed in a qualitative way. This paper utilized in a more quantitative way, which merges the use of questionnaires and the use of risk assessment formula for data processing. The results show that the probability and consequences of corporate construction projects in 18 career malpractice risk events fall into four categories: high-risk and high-probability, high-risk and low-probability, low risk and high probability, low risk and low probability. And accordingly it puts forward the corresponding countermeasures.
University Personnel Management System Construction and Implementation
Authors: Ge Ting
Published: August 2014

The development of management information systems in the construction of university personnel management subsystem as the background, discusses the basic principles and methods of management information systems concepts , structure and system development , a detailed description of the technical background in database technology of " Personnel Management management system , "the basic functions and implementation process.
The Library Information Management System Analysis and Design
Authors: Lu Ting Ting
Published: August 2014

according to the current situation of small and medium-sized library carried out feasibility analysis and the actual demand. The library's basic business processes are described. Combining with the knowledge of library and database technology to design each module. The system using the Windows XP/Windows 6.0 as system platform, using Visual basic 6.0 as a front-end application development tools, Microsoft SQL Server 2000 as the background database. Through to the small and medium-sized books management system management system requirements analysis, functional module division, database model analysis, designed the database structure and application. Due to the use of computer management, improved the traditional manual management way, improve the management level.
Based on Rub a Drum Machine Four-Axis Machining Fixture Design and Modeling in Solidworks and Virtual Assembly
Authors: Ye Xuan Lin
Published: August 2014

The problem of the actual production process is based on the concentrated four-axis machining process, high machining precision and machining difficulty of rub the drum parts, the author analyzes the four-axis machining fixture design of rub the drum, and then puts forward the method of the four-axis machining fixture design of rub the drum, offering the fixture design flow chart. Taking Solidworks software as a platform, the author makes a analysis of 3D digital design and assembly to rub the drum, fixture and clamping mechanism, completes the virtual assembly with rub the drum, fixture and clamping mechanism, realizing the integrated design, making the structure of the clamp more clearly and shortening the product development cycle.
Comparison of the Load with Different Loading Ways in the Finite Element Model of the Mobile Air Compressor Frame
Authors: Yin Hui Jun , Liu Yuan Yuan , Sun Zhao , Hong Xiao Li
Published: August 2014

Taking a mobile air compressor frame as object of the research, for the load generated by the weight of engine, fuel tank and the cooler which are installed on the frame, adding mass and concentrated force are two methods which is used to simulate modeling.Under the working conditions of being hoisted ,combined with the stress-strain electrical experiment , finite element analysis was carried out on the model which is established, then the simulation results of two models were analyzed. It turned out that the established model is credible. For the issue of the load on the frame, it proves that adding mass to simulate the load is a practical and efficient way for modeling.
Deformation Analysis of Dam with the Improved Wavelet Threshold
Authors: Wen Hong Yan , Yuan Ming Yue , Hu Ji Yuan , Zhou Lv
Published: August 2014

This paper introduces the traditional soft and hard threshold wavelet denoising and its improved algorithm,and denoise a dam’s deformation data with MATLAB programming. Compared with previous methods, the improved algorithm improves the de-noising effect quite a lot, the RMSE is obviously decreased while the signal-to-noise is obviously increased,the improved algorithm’s comprehensive precision is higher. Finally,we made a prediction for the results of improved threshold function wavelet de-noising with the use of Kalman filter model and got a good prediction effect,demonstrates that the improved method is an effective denoising method,and shows certain superiority through comparison.
Disk Cam Contour Design Based on Inventor 2009
Authors: Feng Guang Lin , Ding Hong Zhen , Zeng Xian Rong
Published: August 2014

Taking disk cam mechanism with translating follower as an example, this paper introduces a method of rapid parameter design for disk cam contour through motion simulation platform Inventor 2009, by which the cam entity can be produced in accuracy. The function of motion simulation of Inventor 2009 is fully used to check the design, so that the efficiency of product design could be greatly improved.
Finite Element Analysis and Experimental Research for Horizontal Tank to Internal Magnetic Flux Leakage Detection
Authors: Sun Li Qiang , Zhu Hong Bo , Xie Ming , Li Ji Xia
Published: August 2014

In view of the petroleum and petrochemical characteristics of horizontal tank, ANSYS software of finite element analysis was carried out on the horizontal tank within the magnetic flux leakage testing, analyzes the influencing factors of defect magnetic flux leakage signals. Experiments verify the finite element analysis results, the experimental results show that the research of horizontal tank within the magnetic flux leakage detection effect is obvious.
Hardware Design of Automotive Parking Heater Remoter and Receiver
Authors: Ge Yue Tao , Liu Xiao Ming , Yin Xiao Tong
Published: August 2014

In order to achieve 600 meters radio frequency communication and 2-10 meters serial cable communication between remote controller and parking heater, the paper designed the hardware of remote controller and vehicle receivers. Select CC1100 as radio frequency chip, select PIC16F914, ATmega16L as remote control and receiver SPI control chip, select CE8301, LM117 as remote control and receiver power supply module. Finally, the circuit diagram of the receiver and remoter are designed.
Heavy Duty Automobile Self-Discharging Hydraulic System Design
Authors: Du Yong Liang , Sun Kai Luan , Zhang Peng
Published: August 2014

Select Dump Truck Hydraulic lifting system design. By optimizing the size of the dump truck and the main quality parameters, lifting mechanism design, as well as lift coefficient, institutional height, pressure fluctuation coefficient α and so on. Structure and characteristics of the hydraulic system requirements for the design and description, while lifting involved in the design process to supplement the coefficient optimization problems.
Modeling and Simulation of Turbofan Engine Based on Modularized Subassembly
Authors: Cai Na , Li Hong Wei , Li Ming , Ye Bin
Published: August 2014

This paper established a nonlinear model of a turbofan engine by modularizing the components. It selected and key section parameters and to carry the numerical simulation through. The calculated results which achieved by the computer were compared with test data. It shows that the results meet the accuracy requirement. And it also provides the means to establish the engine half-physical simulation test platform.
Comparative Study of Different Cadmium Salts on Nano-Structured CdS Thin Films Prepared by CBD
Authors: Kong Ling Jian , Mi Wen Peng , Li Liang , Jiang Qi Ying , Dong Wei Wei
Published: August 2014

Comparative studies about different cadmium salts were carried out by chemical bath deposition method. The CdS nanofilms that deposited with Cd (Ac)2was smoother, thicker and higher transmittance without any pin hole and particles compared with the films deposited with CdSO4. In this paper, The band gap energy was shifted from 2.4 eV to 2.3 eV while the CdSO4was instead with Cd (Ac)2. In addition, the craystalline of the films deposited with Cd (Ac)2was also better than that with CdSO4. Poly-crystalline hexagonal structure CdS without any unwanted secondary phases was demonstrated by GI-XRD analyses. Applications of the CdS nanofilms deposited with Cd (Ac)2was carryout. Combined our previous test results, the film that deposited on the CIGS abosorb layer was well covered which can demonstrated better for solar cell application.
Research on CNC Machining System of Directly Driven by Image Based on PMAC
Authors: Cheng Xiao Min , Zhou Gen , Wu Peng , Wu Yue Ding
Published: August 2014

This paper establishes a system that can automatically generate CNC code based on readable image formats such as *. jpg, *. gif, *. bmp, *. pcd, *. tif, and make use of machine tool for CNC machining. This system first vectorizes an image by using preprocessing such as smooth processing, edge detection, and contour tracking, and converts it into CNC code, then generates a program that can be identified by PMAC, and drives machine tool to process CNC machining. At last, an example proves the validity of this method.
Simulation and Optimization Design of Gasoline Engine Exhaust Muffler
Authors: Cai Jie , Long Yu Hong , Du Huai Hui , Liu Jun Liang , Li Wen Shang
Published: August 2014

The coupling simulation model of a gasoline engine’s working process and muffler is established by GT-Power software, and related data are obtained by simulation calculation. It is found that the calculating results are consistent with the actual data, which validates the correctness of this simulation model. Through the analysis processing of the coupling simulation model, it is put forward an improved case for the exhaust muffler in this paper. Based on a local optimization, the simulation results show that the insertion loss of muffler has improved markedly, the exhaust noise values decreased and indicated power engine remain basically unchanged.
Experimental Study on Process Parameters of High-Speed Micro-Milling Al2O3 Ceramics
Authors: Yang Shu , Xu Jin Kai , Li Xiao Zhou , Zhang Xiang Hui , Zhao Zhi Long
Published: August 2014

Al2O3 ceramics are widely used in aerospace, defense industry, microelectronics industry and many other fields, but the precision machining methods of this material are restricted because of the high hardness. Therefore, this paper makes an orthogonal experiment of high-speed micro-milling Al2O3 ceramics by machining full-diameter micro-grooves. The feasibility of micro-milling Al2O3 ceramics with diamond coated tools is verified. In the experiment, surface roughness values obtained are treated as evaluation indexes. And the influences of many process parameters on the workpiece surface roughness are analyzed by range analysis method. These parameters are spindle speed, feed rate and axial depth of cut. Then optimized the process parameters and obtained a set of suitable parameters to micro-mill Al2O3 ceramics.
Study on the Welding of Feeder Hopper and Cylinder Instead of Casting Process
Authors: Liu Yun Qiang , Lv Yong
Published: August 2014

According to the specific structure of the hopper and cylinder of twin screw cone feeder machine, 16MnR and austenitic hopper and machine cylinder and stainless steel 1Cr18Ni9 are used for construction by welding process instead of cast steel ZG310-570 galvanized originally. The weld technology process is formulated. In the process of implementation of the program, the difficulties of the process as follows are solved: Selection the alternative materials; rational design of cooling water structures; form and position tolerances between double cone screw and inner sphere – conical surface, reduction of the difficulty of processing the double cone cambered, welding deformation control, post - weld heat treatment of removal residual stresses.
The Design of Wave Height Standard Device in the WTTVS and its Error Analysis
Authors: Ma Xiang Hui , Ye Song , Wang Xiao Lei , Yang Chang Ye , Guo Jun , Su Teng
Published: August 2014

To make up the shortage of the existing calibration equipments of the wave measurement instruments, the WTTVS is designed, and the design of the wave height standard device as a subsystem of the WTTVS is introduced in this paper. The subsystem consists of two invar leveling staffs, a laser range finder and an incremental encode, in which the invar leveling staffs and the laser range finder are used to calibrate the encode. At the same time, the uncertainty of the subsystem is evaluated. As the result, the uncertainty is 3.48mm (confidence probability is 99%), which proves the feasibility of the design.
The Parametric Design and Simulation for Globoidal Indexing Cam Mechanism
Authors: Wang Lin , Yin Ming Fu
Published: August 2014

Globoidal indexing cam mechanism is the spatial indexing mechanism of high speed, high precision and widely used in modern machine and automatic production line.But the working profile of the globoidal indexing cam mechanism is not fair for the space curved surface and it is difficult to model. The traditional design method requires a great deal of calculation, and the design process is complexed, we have to repeat the entire design process when changing any parameters, lead to low design efficiency and poor universality. To solve above disadvantages, this paper used the space meshing principle and space coordinate transformation method, based on 3 d modeling software Pro/ENGINEER, using vc + + and Pro/toolkit for secondary development, realize the parametric modelling of globoidal indexing cam mechanism, and the simulation and analysis of the generated cam mechanism.
Optimization Design of Hot Runner Injection Molding for Thin Shell Parts Based on Moldflow
Authors: Zhu Xu Xia , Zheng Hai Xiao
Published: August 2014

In this paper, based on the characteristics of shell part, the application of hot runner system for the shell parts injection molding process was analyzed by Moldflow. According to this research, design parameters obtained were optimized. The result shows that hot runner system enables injection mold cooling faster , shortens the molding cycle time , and also improves the quality of the shell part.
Stress Forming of Fine Metal Wire Based on Ultrasonic Vibration
Authors: Luo Yi , Yang Chuan Long , Song Yue Ming , Wang Xiao Dong
Published: August 2014

The assembling process of the flex lead of an accelerometer can bring in internal stress, which causes drift error and affects the precision of the accelerometer. The paper introduces a method using ultrasonic vibration to reduce the internal stress, discusses the theory of ultrasonic stress relief on fine wires, shows ultrasonic stress relief experimental apparatus which uses an optimized ultrasonic tool head to inflict ultrasonic vibration to fine wires. By introducing the displacements of the fine wire ends into ANSYS, changes of the internal stress of the fine wire can be obtained. The experiment studies the performance of ultrasonic vibration to fine wire internal stress and deals with the relationship between infliction time and results. The experiment results confirmed that by selecting the suitable experiment parameters, ultrasonic vibration is an effective way to internal stress relief, the internal stress decline as infliction time increase then stays.
A Method of Correcting Brightness Gradient in Thermal Infrared Image
Authors: Yang Guo Fang
Published: August 2014

On January 2, 2014, had the thermal infrared remote sensing image (TASI) near the drain of the Chang Jiang nuclear power station in Hainan Province plant. Due to the effect of external factors, such as the sun azimuth, the data within a single band appeared brightness gradient phenomenon. It was not conducive to the seawater temperature retrieval. Through research and analysis, established a model for thermal infrared image brightness gradient of the seawater. Based on quadratic polynomial fitting method, simulated the law of each kind of water after threshold classification, and then used the simulated compensation correction factors to correct the original image, had obtained a good application effect.
The Intelligent Traffic Monitoring System Based on Beidou Research and Design
Authors: Wang Hong Hua
Published: August 2014

Most transportation monitoring systems are based on the U.S. GPS + GSM / GPRS / CDMA or shortwave radio communication network to achieve positioning and monitoring. This type of system positioning part, because the United States belong GPS applications in key areas may be controlled by others; monitoring transport vehicles through the mobile communication network, increasing the cost of the system, and does not have the characteristics of real-time monitoring. In this paper, the characteristics of the above proposed transport vehicle monitoring and dispatching system for China's own Beidou navigation system developed is based. The system uses positioning and communication system Beidou satellite communications, real-time monitoring of transport vehicles and scheduling, to ensure normal transport.
The Research of Self-Balancing Vehicle Based on Posture Sensor System
Authors: Gao Mei Xia , Bai Jian Pu
Published: August 2014

The main subject of this thesis is to study a uneasily two-wheeled self-balancing vehicle system. Two tires are placed on two sides of the body parallel in this system . Controlling the rotation of two DC motors can achieve the goal of walking upright. The circuit part is mainly made up by attitude sensors parts (including Gyroscope and Accelerometer), control circuit and the driver board. Attitude sensors measure the tilt angle and the rate of change of inclination of vehicle, and then the controller calculate the responding data and finally drive two DC motors forward or backward to produce forward or backward acceleration to make the car balancing.
The Simulation about Single-Phase Bridge Type all Control the Rectifier Circuit is Based on Matlab
Authors: Ji Min , He Jing Feng , Ji Peng Fei
Published: August 2014

Simtlink is not only intuitive, but also programming steps can be reduced. The mode on single-phase bridge type all control the rectifier circuit is built which is based on Simulink/ MATLAB. According to the different parameters of circuit simulation, they can further deepen single-phase bridge type all control the rectifier circuit theory, as well as modern power electronics is established.
The Study on Voltage Control Based on MAS and Grid Technology
Authors: He Xun Yu , Ma Zhuan
Published: August 2014

In order to build a truly open OpenDSS and enhance the complexity of decision-making DSS for solving the problem of voltage control. a new model was given based on MAS in grid environment. Making use of the intelligence of MAS and adaptive capacity, based on the reasoning mechanisms for task decomposition and resource decision-making grid matching, a new intelligent algorithm based on MAS in order to improve its control effect, and the paper uses the kind of algorithm to coordinated secondary voltage control. The simulation results show the voltage control based on the algorithm have better global best properties and coordinate voltage effectively than routine method.
An Approach for Detecting Illegal Load in Wireless Power Transfer System
Authors: Lv Xiao , Zhang Lei , Zou Ding Dong
Published: August 2014

In wireless power transfer (WPT) system, detection of illegal load especially the metallic illegal load is necessary to protect the system safety due to the high frequency electromagnetic. This paper presents an efficient and easily-realized method based on energy channels for detecting the legitimacy of load in WPT system. The method is designed that the load at a given frequency to carry out on-off modulation and the primary part demodulation to judge the legitimacy of the load according to the energy equilibrium equations. To realize the proposed method, the relation between primary DC(direct current) input current and secondary load resistance have been analyzed. Therefore, the final detection method is set up which is only required sampling the frequency of DC input current to avoid complex system modeling and requirements of high speed sampling system. Finally experiment and simulation have verified the method which is much efficient and easily-realized for detecting the legitimacy of load accurately.
Based on Energy-Efficient Opportunistic Multicast Routing for Mobile Wireless Sensor Networks
Authors: Zhang Zhen Yu , Wen Shao Jie , Yang Wen Zhong
Published: August 2014

Energy-efficient is one of the main problems among all the problems in mobile wireless sensor networks, for improving the energy efficiency of the nodes in the multicast environment and complete the communication works with the minimum cost, we present a based on energy-efficient opportunistic multicast routing for mobile wireless sensor networks. In order to increase the reliability of links, we use opportunistic routing and collaboration mechanism to realize the routing method, and then use the path aggregation to reduce the energy consumption of the whole network. The results of simulation show that, the method presented in this paper is effective in reducing the consumption of links cost.
Design and Analysis of Dual Hall Position Sensor with Automatic Direction Recognizing and Pre-Positioning Function
Authors: Zhang Yong Jie , Fang Zhi Yi , Jin Jian
Published: August 2014

As an electromagnetic position sensor, Hall position sensor is widely used in various fields. In this paper, we discussed the working principle of the Hall sensor, and proposed a new method on direction recognizing technology. The dual Hall sensor structure has automatical direction recognizing and pre-positioning function, which can improve the adaptability of the sensor. Meanwhile, this new design can be used for other position sensor applications.
Control System Design and Trajectory Planning for SCARA Robots
Authors: Gao Ning Ning , Wang Dong Qing , Ding Ming Wei , Yao Peng Xiu , Fan Lu Yi
Published: August 2014

Based on STM32F407ZET6 microprocessor with ARM Cortex-M4 core, we designed a controller for servo motors and servo drivers of a 4-axis Selective Compliance Assembly Robot Arm (SCARA) robot. The forward and inverse kinematic equations are established, circular interpolation equations in three-dimensional space are derived by using the digital differential analyzer method. The adopted circular interpolation algorithm avoids to judge quadrant and feeding direction, which simplifies the program.
Application and Research on Fixture Accuracy Control with the Three Datum Planes
Authors: Shen Xing Dong
Published: August 2014

The application accuracy control system with the three datum planes in machining fixture accuracy design can be used to be integrity for the item, index sign reasonable, to be easily for the criterion design and be advantageous to the computer assistance fixture design.
Research and Implementation of Small Mobile Robot Technology
Authors: Lei Jiang , Bo Su
Published: August 2014

Due to mission requirements in the field of deep space exploration, emergency relief, intelligent mobile etc., based on the cross research with vehicle terramechanics, vehicle engineering and mobile robotics, this paper carried out researches of lunar rover, lightly wheeled unmanned ground platform, quadruped mobile platform etc., and proposals application prospect in future.
Radiate Source Target Localization Techniques Using Airborne ESM Sensor
Authors: Li Jun Hua , Quan Hong Wei
Published: August 2014

This paper investigated the radiate source target localization techniques using airborne ESM sensor. Two algorithms are represented for different application environments. Pseudo linear estimation algorithm is used for estimating static target states with bearings-only measurements. The measurement data are bearings which are affected by random Gaussian observation noises. Iterated least squares estimation algorithm used iterative techniques to enhance the estimation accuracy. It is a kind of estimation algorithm based on the least squares estimation. Finally two scenarios are represented in Matlab simulation environments to validate the effectiveness of the algorithms.
Research on the Static Mechanics of the Hybrid Robot
Authors: Luo Ji Man , Sun Xiao Wei , Lin Qiao Zhi , He Shu Long
Published: August 2014

The purpose of this research is to get the static mechanical distribution of the hybrid robot and provide the basis for its structural optimization. In this paper, the parallel manipulator which is suffered the maximum force of the robot is studied according to the statics analysis theory of space mechanism. The position distribution of extreme stress and extreme strain on the key components which is suffered the maximum driving force is obtained by the simulation of finite element analysis, then the strength of the existing structure is checked, laying the foundation for structural optimization.
Majorization about Fire Extinguishing Robot of AS-MF09
Authors: Chen Wei , Deng Hai Shun
Published: August 2014

According to the Eleventh China Intelligent Robot Contest of fire-fighting rules, modified the AS-MF09 fire-fighting robot and had made an overall debug. From the problems arising in the debugging process for the hardware platform based on AS-MF09, this paper made a targeted analysis in the practice, the key technologies such as the strategies of finding the fire, the choice of fire-fighting mode and the efficiency to ensure fire-fighting had been optimized. As the result, the AS-MF09 fire-fighting robot found the fire quickly at the lower scores fire-fighting mode and extinguished the fire with the success rate of one hundred percent. The result shows that the optimization of the AS-MF09 fire-fighting robot can achieve rapid and efficient fire-fighting effects.
Design and Implementation on PC Control Interface of Robot Based on VxWorks Operating System
Authors: Guo Tong Ying , Liu Peng , Wang Hai Chen , Liu Shu Juan
Published: August 2014

VxWorks operating system has been widely used in the field of embedded real-time operating system for its good reliability and excellent real-time performance. In this paper, the robot PC control interface is designed under VxWorks development environment. By reading the 24-bit true color bitmap, the image data is stored in memory, and window is created using WindMl multimedia database, bitmap is created and displayed in the window, background is displayed using the entire bitmap, buttons and text boxes are displayed by modifying and updating the corresponding position image display memory. The paper gives some modules of code, the method used is simple common, and the design interface is beautiful.
Circular Track Crane of Blast Furnace Control System Design and Implementation
Authors: Chang Feng Jun , Ma Hong Quan , Cui Chang , Zhang Jing , Wang Chun Yan
Published: August 2014

Some Steel Plant in our country using the old formula annulus crane, this article introduce a new electrical control system. Using PLC + Inverter + Linkage console, use this control system, we can solve the question that the old crane always out of orbit, this system solve the crane out of the orbit, broken the orbit and slip perfectly. On the other hand, we subjoin vector control, which can prevent the weights fling off.
Control and HIL Simulation of Series Hybrid Electric Vehicles Based on Dynamic Programming Algorithm
Authors: Zhang Liang , Jiao Bin , Guo Xiu Hong
Published: August 2014

Hybrid electric vehicles has the potential to save energy consumption and relieve exhaust gas emission while the power flow control techniques are very important for improving a hybrid electric vehicle’s performance. In this paper, the system simulation and control method of series hybrid electric vehicles were proposed. The control method was based on enhancing the energy transfer efficiency based on dynamic programming algorithm. The hardware in the loop (HIL) simulation was constructed containing a real-time driver and controller in the simulation platform, which can be used to evaluate the proposed strategy.
Analysis of Kinematics and Dynamic Model and Structure Optimization of Wheeled Robot
Authors: Du Yun
Published: August 2014

Kinematics and dynamic model are the foundation for system design and performance analysis, and are also the guarantee of controller practicability. The Kinematics and dynamic model of three-wheeled robot with two wheels driving are established in this paper. Three wheeled supporting structure is simple, but stability is relatively poor. So on two aspects structure optimization of the robot is completed to ensure support stability and movement flexibility.
Effects of Ultrasonic Impact Treatment on Performance of Armor Steel Welded Joints
Authors: Li Ge Zhou , Zhou Xin Yuan , Wang Yong , Huang Yan Fei , Zhang Wei
Published: August 2014

In this paper, the armor steel welds were treated by ultrasonic impact equipment. The stress, hardness and cross section morphologies of the samples under different impact frequencies were measured by electrolytic polishing machines, X-ray stress analyzer and scanning electron microscopy (SEM). The results show that a clear grain refinement layer is formed on the surface of armored steel weld after ultrasonic impact treatment. Its hardness and residual stress all significantly improve. The ultrasonic impact treatment of different frequencies has greatly affect on ultrasonic impact effect, the higher the frequencies are, the better the ultrasonic impact effects are.
The Design of the Injection Molding Machine Control System Based on PLC Controller
Authors: Kang Li , Jiao Wen Tan
Published: August 2014

Control system of the Plastic injection molding machine formed by electric relays and switching valves has many shortcomings, such as complexity wiring, low control accuracy, inconvenience maintenance and lack of flexibility, using the simulation assessment of the actual application method, this paper designs the injection molding machine control systems based on PLC controller, the new control system is composed by PLC, inverter, sensors and other components, with the help of PID control, which according to the given screw barrel temperature deviation value and measured value, automatically adjust and stabilize of the entire control system. Simulation experimental results show this new control system can achieve better performance is effective, which will decrease energy consumption of the stabilization system; the research achievements have certain theoretical and practical value to the design of injection molding machine control system.
Study on Cutting Parameters Optimization of Ball-End Cutters Milling for 2A70 Aluminum Alloy
Authors: Xiao Jun Min , Xie Jin
Published: August 2014

Based on experiments of ball-end cutters milling for 2A70 aluminum alloy, the prediction model of surface roughness for 2A70 aluminum alloy is established by using of regression analysis method of least square. Aiming at the actual milling problem in the enterprise the cutting parameters are optimized by using of optimization tool-box of MATLAB software, in the process of solving optimized parameters the machining efficiency is set as the objective function and surface roughness prediction model is set as the constraint condition. The optimized cutting parameters can greatly improve the machining efficiency in the premise of ensuring the quality of machined surface, and it provides the important theory evidence and case reference for NC machining enterprises to reduce production costs.
The Design Research of Inductance Sensor in the AMB Rotor System
Authors: Yu Wen Tao , Li Hong Wei , Liu Shu Qin
Published: August 2014

The sensor is an important part of the active magnetic bearing system, which directly affects the performance of the entire system. Compared with the eddy current sensor, inductive sensor has the advantages of low cost, high sensitivity, and is not sensitive to the electromagnetic environment; Influenced by the ambient temperature is small. In this paper, design research from two aspects of the sensor structure and circuit, and the sensor was simulation analysis, which laid the foundation in the application of magnetic bearing systems.