bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of VFC in High Voltage Sampling System Based on CPLD
Authors: Wu Li Xin , Wei Tong Zhen
Published: August 2013

A VFC technique based on CPLD is proposed, by which the problems of isolation and remote transmission emerged in high voltage sampling systems could be well solved. The working principle, circuit configuration, and hardware realization of VFC are introduced in detail, respectively in this paper. Moreover, the problems of operation principle and conversion accuracy of VFC based on CPLD are emphasized and the corresponding method of V/F transition is proposed utilizing CPLD and DSP. Due to some significant advantages, such as, high voltage in circuit isolation, high sampling precision, easy realization, and the satisfaction in remote transition requirement, the developed VFC sampling system could be widely utilized in high voltage sampling systems. Finally, some experimental results are provided to show the effectiveness of the proposed VFC technique based on CPLD.
Design a Phase Frequency Detector
Authors: Lei Xue Mei , Xing Xiao Dong , Ding Xue Dong
Published: August 2013

This paper describes a phase frequency detector application using 0.18μm CMOS process. In order to cover the high frequencies of input signals, TSPC D flip-flop structure are applied. The core area of proposal phase frequency detector is 60 μm×50 μm. The simulating results show that rang of operating frequency is from 500kHz to 500MHz and the power consumption is 0.722mW under a 1.8V supply.
Design and Realization of 35kV Phase Controlled Circuit Breaker and its Electromagnetic Force Driving Actuator
Authors: Wang Hai Yan , Yuan Duan Lei , Niu Chen Xu , Dong Hua Jun
Published: August 2013

In this paper, mainly for the problem that high voltage circuit breaker closing at the random phase can bring hard harmfulness to the power system. We design the 35kV SF6-Phase Control circuit breaker can control speed smartly, and opens or closes with phase selection, which is equipped with the magnetic actuator. In the article, the static and transient simulation analysis which includes the load force, and carried out prototype trial and test validation. At last, the results of simulation and test is given.
Nonlinear Compensation for Resistive Displacement Sensor
Authors: Zhu Yu Tian , Zhao Yan Long , Hua Ju Fu , Liu Zhao
Published: August 2013

For the nonlinearity of sensors always reduces the accuracy of control and detection system in engineering, a new compensation method based on MCU is put forward in this paper. To verify the feasibility of this method, a data acquisition system and compensation system are designed. The polynomial fitting is applied to obtain the functional relationship between input and output. Then the compensation system is tested on the resistive displacement sensor. The results show that after the compensation, the sensor error can be reduced to less than 1% and this method is identified to be practical.
Research on Load Modeling Stability Control Based on AC/DC Hybrid Transmission System
Authors: Liu Ying , Ding Li Jie , Wang Jun , Zhang Zhou Jing
Published: August 2013

A stability control technique for load modeling is proposed in AC/DC hybrid transmission system. A frequency-dependent mult-infeed HVDC system matrix is obtained accurately via the complex curve fitting technique. With the mult-infeed HVDC system matrix the mutual coupling effect is included in the synthesis procedure automatically, resulting in a great effect on improving load model precision and adaptability.
Design of a Rail-to-Rail Operational Amplifier with Low Supply Voltage and Low Power Dissipation
Authors: Jiang Zhan Peng , Xu Rui , Huang Hai , Dong Chang Chun
Published: August 2013

An rail-to-rail operational amplifier is presented in this paper, which is designed by with two op amp, the first level of the structure is the complementary differential structure which will providing input for the operational amplifier, the second level is designed with the structure of folding cascode to get a high gain. The operational amplifier is designed with the TSMC 0.35u m3.3VCMOS mixed analog-digital technology library. The simulated results show that the operational amplifier has a DC gain of 110dB,a GBW of 9.5MHz,a static power dissipation of 0.95mW,a phase margin of 73°,a voltage slew rate of 8.2V/μS,an input and output range of 0-3.3V,when operating at 3.3V power supply and a 20pF output load.
Energy Equalization Circuit with Multiple Primary Windings for Li-Ion Battery System
Authors: Chen San Xing , Gao Ming Yu , Ma Guo Jin , He Zhi Wei
Published: August 2013

In this paper, a cell equalization circuit based on the Flyback topology is proposed for the Lithium-ion battery pack. Multiple transformers are employed in this circuit, equal to the number of cells in the pack. All the primary windings are coupled in series to provide the equalizing energy form the whole battery pack to the specific under charged cells. The structure and principle of the circuit is discussed, finally a prototype of four cells is presented to show the outstanding equalization efficiency of the proposed circuit.
Research on Improving Lateral Resolution of Ultrasound Phased Array Elements by Using Sparse Matrix
Authors: Guo Jian Qiang , Zheng Biao , Chen Lin , Wang Li , Gao Xiao Rong , Wang Ze Yong , Zhao Quan Ke
Published: August 2013

In the phased array imaging system, in order to get better images,the lateral resolution need to be improved and the grating lobes need to be eliminated. Restrainning the width of the main lobe is a way to improve the lateral resolution of the system. This article designed the non-periodic distribution of elements to decrease the width of main lobe of the transducer using sparse matrix methods. In this way, we can improve the lateral resolution, resolve the problem of high-density of elements in phased array element, eliminate the impact of the gate lobe, lowerring the effects of radiation in the neighboring elements, save costs and overcome the difficulty in production of elements.
A System of Computer Real Time Optimization Control for Refining Industry
Authors: Chen Jing
Published: August 2013

The catalytic cracking unit, of oil refining industry, is a complex process characterized by its prolonged time delay and strong coupling ability. The unit is highly nonlinear and varies with time. Its mathematic model can be obtained online with difficulty, so as the parameters model. We describe the system of A System of Computer Real Time Optimization Control for Oil Refining Indus try ,and it is present that the system rely on coupling method of parameter identification and online simulation and synthesizing evolutionary technology of Multiple optimization strategy. It builds a single input, single output black box mathematic model. It is applied to predict the trend of system outputs, guiding the operations. This system has been adopted in several oil refineries, the benefits are pronounced.
Parameter Estimation of Low-Frequency Signal with Negative Frequency Contribution
Authors: Tan Si Wei , Ren Zhi Liang , Sun Jiong
Published: August 2013

According to the problem that there is a decline in accuracy of low-frequency signal parameter estimation by using the algorithm of all-phase FFT, an improved phase difference correcting spectrum method based on all-phase FFT is proposed. The contribution of negative frequency to FFT calculation was considered while using phase difference correcting spectrum method. The all-phase FFT spectrum analysis theory was presented as well as a traditional phase difference correcting method based on it. The equations of parameter estimation such as frequency, amplitude and phase for low-frequency signals were derived with the negative frequency contribution to spectrum analysis. The simulation results show that the method proposed in this paper can be used to estimate the parameters of low-frequency signals in a high accuracy, and also achieves an improvement in anti-noise ability.
RETRACTED: Electro Optic Methods in Intra-Body Communication System
Authors: Li Jian , Zhang Shuang , Liu Yi He
Published: August 2013

Retracted paper: Intra-body communication is proposed by Zimmerman in 1995 and the galvanic coupling has been observed to be the best method for data transmission. With the increasing transmission requirements and the development of optical fiber communication, a high speed system is possible to be designed based on the Electro optic methods. In this paper, the characteristics of the intra-body communication system are introduced. Principles and structures of optic modulation for intra-body communication are reviewed. Internal and external modulation methods are introduced and discussed. A system of the electro optic modulation is recommended and discussed.
Remote Access and Control System Based on Infrared Communication Technology
Authors: Jiang Xiu Jiao
Published: August 2013

With the development of world science and technology, people's quality of life and living standard is also improving gradually, so the technology of remote access and control system will be born. The household appliances are carried out the remote access based on infrared communication technology, to construct the infrared communication coding protocol procedures, it can pass through the procedures to achieve the related functions of various electrical appliances with the organic coordination, in order to remote access for the household appliances. At the same time through the timing function of the infrared communication technology, it can be form a complete access and the control system, and can be the formation of the received infrared communication and emission flow diagram, in order to achieve the largest household appliance function and use, effectively guide people better infrared communication technology to be widely and effectively used.
Design of the Double Loop Control Grid-Connected Filter Based on Virtual Resistance
Authors: Jia Gui Xi , Feng Jian Kui
Published: August 2013

An improved control algorithm of repetitive controller based on virtual resistance was proposed to solve the problem of the slow dynamic response and the high total harmonic distortion (THD). The proportional-integral controller (PI controller) can not only adjust rapidly but also eliminate residual error effectively and the repetitive controller can eliminate periodic interference signal effectively. The double loop control combined with PI control and repetitive control. The controller has been used to control the inverter in grid-connected section which can improve the regulating speed and system stability. It can also achieve fairly good control effect under the circumstances of mutations of voltage and load. By designing the parameters of the controller, THD of the grid-connected current is lower than 0.61%. The simulation result shows that the algorithm is correct and feasible.
Digital Book Reading and Communication Platform for Android
Authors: Ning Hui Xin , Li Liu Yu
Published: August 2013

College students have become the mainstream of the user Android intelligent mobile phone market. However, there are only few platforms based on Android for college students to study and communicate. Through the analysis of the demand situation, this paper studies and develops the campus digital library reading communication platform based on Android. Using the Java Web technology, Android application development technology and WiFi network environment, the system meets the functional requirements of the students learning and communication.
Image Enhancement Method for Steel Surface Defects Based on DT-CWT
Authors: Chen Zhi Xin , Wang Ping , Xie Shi Kun
Published: August 2013

A method based on Dual-Tree Complex Wavelet Transform (DT-CWT) was proposed for enhancing the images. By taking into account the non-Gaussian probability distribution and the statistical dependencies among wavelet coefficients of some signals, and by taking advantage of near shift-invariance of DT-CWT, it can obtain higher signal-to-noise ratio (SNR) than common wavelet denoising methods. The simulation results show that the proposed method is better than the traditional methods. It has a good enhancement performance which can improve the details of the image automatically.
Parameter Estimation of Multicomponent Cubic Phase Signals
Authors: Tang Peng Fei , Yuan Bin , Lin Qian Qiang , Chen Zeng Ping
Published: August 2013

This paper presents an algorithm for estimating the parameters of multicomponent cubic phase signals. This algorithm combines the product generalized cubic phase function (PGCPF) and the product cubic phase function (PCPF) which are used to estimate the cubic phase coefficient and chirp rate of the cubic phase signal, respectively. This algorithm starts by estimating the parameters of the signal component with the strongest amplitude. Then removing the signal component whose parameters have been estimated, it proceeds to estimate the next signal component, and so on, until all of the signal components have been estimated. Numerical simulations are carried out to validate the performance of the proposed algorithm.
The System Architecture for the Face Recognition Based on Mixed Mode
Authors: Yin Yong Hua , Zhu Quan Yin , Xu Cheng Jie , Yan Yun Yang
Published: August 2013

In order to build an efficient, sample and convenient system of face recognition based on the video streaming, a mixed mode of software development is proposed in this paper. In requirement analysis of the face recognition system, efficient code, sample development and ease of use are designed in this system. To obtain better recognition efficiency, Dynamic Link Library (DLL) is used to program the part of face recognition. The whole system is based on Microsoft .NET platform which provides a simple and rapid development. The mixed of Browser/Server (B/S) and Client/Server (C/S) modes makes the system more flexible, at the same time more convenient for user to use. The whole system is divided into three parts: server, client and browser. And the server-side is storing data through a database, managing different clients and providing data to the browsers. The client-side mainly monitors and collets data. The browser-side provides users with querying information which they want. And the proposed system architecture can satisfy the application requirements for the customer.
Human Detection Based on SVM and Improved Histogram of Oriented Gradients
Authors: Zhang Li Hong
Published: August 2013

Considering the fact that original histogram of oriented gradients (HOG) cannot extract the body local features in large image regions, its features are improved when extracted, then more gradient information are extracted and feature description operators can be obtained which describe human detail features better in lager image regions or detection windows. Considering speed, we select support vector machine (SVM) using linear function kernel as a classifier. Combining with HOG extraction and SVM training, the process includes three steps: features extraction, training and detection. Experiments show that while maintaining a relatively satisfactory speed the human detection system improves detection accuracy.
CUDA-Based Parallel Prewitt Algorithm Implementation and its Application on GPR
Authors: Peng Tu You , Zhao Yang
Published: August 2013

The edge of image is one of the important features of the image, edge detection is an important means to extract image features. As the most popular high-performance processing technology, GPU parallel technology is on of the best choices for parallel Prewitt algorithm implementation. Since conventional Prewitt algorithm based upon CPU is computationally intensive, time-consuming, its application is very restricted. In order to improve the efficiency of Prewitt algorithm, CUDA-based parallel Prewitt algorithm and fast imaging algorithm are applied to get higher speedup. Finally, an effective method is proposed by turning the GPR field data into gray-scale image data, then implementation of GPR field data processing with the Prewitt algorithm based upon CUDA. Numerical results on GPR field data have shown that the algorithm is not only of high efficiency, but effective to improve target identification capability based upon GPR.
HDMI Data Transmission System Design
Authors: Xiong Jiang , Yi Qing Ming , Shi Min , Li Ting Ting
Published: August 2013

A new HDMI data transmission system is proposed in this paper. To achieve a better data transmission performance, the TMDS codec algorithm of HDMI transmitter and receiver are optimized, thus the precision and practical applicability is improved. Moreover, a color enhanced module and an error correction module are added to the system. The proposed system is implemented using Verilog DHL language and simulated in Modelsim software. The simulation results show that the proposed system exhibits better performance on the functions of data sending and receiving.
Pulmonary Embolism Vascular Segmentation in CT Angiography
Authors: Gao Qi Xin , Li Huai An
Published: August 2013

Pulmonary embolism mortality rate is very high disease, especially for acute pulmonary embolism with other disease mortality. Treatment of pulmonary embolism method is mainly to drug therapy. Pulmonary embolism in the acute phase of drug treatment strategies is mainly for anticoagulation and thrombolysis. Through the lungs scanning, decision of thrombolysis success or fail. This paper puts forward a kind of algorithm that analysis quantitatively the degree of thrombolysis by the computer. Firstly, making use of the Hessians eigenvalue and diffuse equation enhance pulmonary embolism vessel, and then pulmonary embolism vessel segmentation based on a LEVEL-SET. At lastly, According to the eigenvalue of blood vessels, remove the blood vessels edge line, and the rest relevant to edge point. According to the each point of eigenvector and eigenvalue, quantitative analysis of the degree of thrombolysis.
The Application of Neural Network in Computer Control
Authors: Liu Jing , Zhao Yu Chi , Shi Xiao Hua , Liu Su Juan
Published: August 2013

In recent years, it is a very active direction of research to use neural network to control computer. Neural network is a burgeoning crossing subject, and the way it processes information is different from the past symbolic logic system, which has some unique properties: such as the distributed storage and parallel processing of information, the unity of the information storage and information processing, and have the ability of self-organizing and self-learning. And it has been applied widespread in pattern recognition, signal processing, knowledge process, expert system, optimization, intelligent control and so on. Using neural network can deal with some problems such as complicated environment information, fuzzy background knowledge and undefined inference rules, and it allows samples to have relatively large defects and distortion, so it is a very good choice to adopt the recognizing method of neural network. This thesis discusses the application of neural network in computer control.
Influence of Various Tin Ion Doped Amount on the Dielectric Properties of BMNS Ceramics
Authors: Huang Xin You , Huang Mu Sheng , Gao Chun Hua , Zuo Yuan
Published: August 2013

Bi2 (Mg1/3Nb2/3-xSnx)2O7(BMNS)(x=0.1,x=0.15,x=0.2,x=0.25 mol) ceramics was prepared by traditional solid-state reaction method and the influence of tin ion doped amount on the dielectric properties and structure of BMNS ceramics were investigated. The results show that all of the doped samples keep a single monoclinic pyrochlore phase and there is no second phase observed. The grain size of ceramics gradually increases, the dielectric constant decreases first and then increases, the dielectric loss increases first and then decreases and the density reduces with the increase of tin ion doped amount. The density of ceramics increases first then decreases with the increase of sintering temperature. The BMNS ceramics sintered at 980 °C with 0.25 mol tin ion doping amount has a biggest density and the best properties,whose εr is 155(1MHz),tanδ is 0.0011(1MHz), the bulk density is 7.62 g/cm3.
A First-Principles Study of a New Heusler Alloy
Authors: Feng Lei , Wang Fei , Han Yan Xia , Fan Xiao Wei , Liu Ju Fang
Published: August 2013

We studied a new Heusler alloy V2CoSi with Hg2CuTi-type structure by first-principles calculations. The electric structure and magnetic properties have been investigated. The alloy has a total magnetic moment of 1.00μB per unit cell on first-principles calculations which is in agreement with the SlaterPauling (SP) rule. The magnetic moment of atom Co is 0.38μB and the magnetic moments of V(1) atom and V(2) atom are 0.80μBand-0.24μB respectively, so the alloy is a ferrimagnetism.
Research on Cladding Process of Metal Powder during Laser Additive Manufacturing
Authors: Zhang Kai , Zhang Xin Min , Shang Xiao Feng
Published: August 2013

The process of laser additive manufacturing consists of depositing successive layers of molten metal powder to create a near-net shape. A high-power laser is used to melt incoming metal powder, which forms a molten pool on the surface. As the latter moves beneath the laser, this newly created molten pool solidifies. By properly controlling the trajectory of deposition tracks, one can create a diverse range of shapes with varying complexities. In nature, the laser additive manufacturing technology is a continuous multilayer laser cladding process under the control of computer. The microstructure morphology of cladding layer is essential for the performance of as-deposited metal parts, so the cladding process was studied through related experiment. Based on the solidification theory, the microstructure morphology and the evolution rule were comprehensively analyzed. The results indicate that the temperature gradient and the solidification rate are the primary factor determining the microstructure morphology of cladding layer.
Laser Transmission Technology of Laser Additive Manufacturing
Authors: Zhang Kai , Shang Xiao Feng , Wang Lei
Published: August 2013

The laser additive manufacturing technology is a laser assisted direct metal manufacturing process. This process offers the ability to make a metal component directly from CAD drawings. The manufacturing equipment consists of some components. Among them, the laser transmission component plays an important role in the whole fabricating process. It provides the energy source to melt the metal powder, so it is necessary to develop the laser transmission technology. This technology is achieved primarily by laser generator system and optical path transmission system. The related structure design and function implementation prove that the laser transmission technology can generate desirable laser power at precise assigned position, and complete the manufacturing process with flying colors.
Numerical Simulation of the Thermal Behavior during Laser Metal Deposition Shaping Technology
Authors: Zhang Kai , Wang Lei , Zhang Xin Min
Published: August 2013

Laser Metal Deposition Shaping (LMDS) is an emerging manufacturing technique that ensures significant reduction of process time between initial design and final components. The fabrication of fully dense parts with appropriate properties using the LMDS process requires an in-depth understanding of the entire thermal behavior of the process. In this paper, the thermal behavior during LMDS was studied, both numerically and experimentally. Temperature distribution and gradient in the fabricated part were obtained by finite element method (FEM) simulation. The numerical results are in good agreement with the experimental observations. The numerical method contributes to the comprehension and control of the thermal behavior, and may be used to optimize process parameters and predict the thermal response of LMDS fabricated components.
The Market Application Analysis of CAPM Model
Authors: Zhang Peng , Meng Xiang Huan
Published: August 2013

CAPM is one of the most important decision-making problems for most organizations in portfolio selection problem. Usually the determination of the capital return on assets is the core issues of CAPM.The paper deeply makes the empirical analysis of CAPM model in Chinese stock market .The result could help Chinese investors understand pricing behavior and effectively guide the formulation of investment strategies in Chinese stock market.As a result, empirical research carried out many problems, especially no any effective test methods exist. From the former empirical test paper, the majority of results show that the CAPM does not apply to the current Chinese stock market. Therefore, Chinese stock market is still in development,not a mature market and far away from a standard market.
Study on Control Scheme of Reheating Furnace of Steel Rolling Optimization
Authors: Sun Jie , Feng Min , Li Xin
Published: August 2013

The strategy of temperature control was proposed to achieve the combustion process of steel rolling heating furnace which based on PID algorithm of self-tuning fuzzy parameter with step by step heating furnace of steel rolling as research object and in view of the characteristics of the nonlinear system of uncertainty, many disturbances, big delay etc in the combustion process of heating furnace,starting from the practical engineering in this paper. The method adopts self-calibration of the fuzzy parameters of direct proportion, integral and differential (PID) control. The results show that this strategy of control has some advantages. For example: the speed of response is faster than traditional PID controller, the capability of anti-jamming is stronger than traditional PID controller and the efficiency and quality of the heating furnace combustion process is improved.
Construction of Army Equipment Support Transformation Demonstration System Based on Integration
Authors: Zhao Zhan Biao , Zhang Hui Qi , Chen Chun Liang , Qi Ou
Published: August 2013

to accelerate the construction of army equipment support, the concept of army equipment support transformation demonstration system is put up and the theory of demonstration system is concluded. By analyzing the equipment support transformation, the connotation is discussed and the transformation frame is given. By applying the system engineering meta-synthetic engineering office, the equipment support transformation demonstration system logical framework and the equipment support emulation model system is set up and the equipment support efficiency evaluation procedure is analyzed. The basis is offered for the subsequent army equipment support demonstration system.
The Impacts of Sports Medical Projects on the Improvement of Grassroots' Physical Fitness
Authors: Wei Ya Qing , Huang Zong Feng
Published: August 2013

Accompanying the reform and opening up of economic construction and social development of democracy in China, Grassroots' annual income is increased significantly, but Physical fitness is declining. Controlling Population and improving the quality of the population are China's basic national policies. To solve the problems of low per capita health care resources and space and time limitation of sports activities, this paper analyzes the bidirectional impacts between grassroots' physical fitness and sports medical projects. The study collects power, speed, stamina, agility, flexibility and other basic data of local residents in Guangxi to calculate the composite score of the physical quality of the local residents, and uses the multiple linear regression models to analyze the impact of community sports projects and basic medical projects on residents' physical fitness. The results show that the economic development has little impact on the improvement of residents' physical fitness while community sports physical and medical projects have some impacts. Therefore, we should increase investment for sports medical projects, expand the scope of medical services, and provide more sports area and sports equipments program to improve the physical quality of the residents.
Research on the Automotive Hybrid Control System Applications
Authors: Zhang Xin Qiang
Published: August 2013

With the rise of international oil prices and the increasingly scarce of oil energy, the fuel consumption of cars has received more and more attention of the community. In recent years, the number of cars has sharply soared, and its resulting resource consumption and environment are more and more problems, the most direct solution is the production of pure electric vehicles or oil electric hybrid cars, due to pure electric vehicles technology is not yet mature, hybrid cars have become the best choice to solve the energy and environmental problems. This paper first expatiates the characteristics of three kinds of hybrid power system, and introduces the working principle and way of working of the hybrid electric vehicle system; the second part establishes the mathematical model of automobile hybrid, to give the expression form of resistance coefficient, air resistance, rolling resistance and acceleration resistance under the hybrid driven; for the three forms of separate control power system, the third uses MATLAB/ADVISOR control software to carry out simulation, to provide a theoretical reference for the design and application of automobile hybrid power control system.
Liquid Chemicals in Bulk Security Operations Guide
Authors: Deng Shu Zhang , Zhou Zhao Xin
Published: August 2013

in recent years, with the development of the chemical industry, marine liquid chemicals a steady growth. Research guidelines for the safe operation of dangerous chemicals in bulk liquid, and to ensure the smooth operation of bulk liquid chemicals Terminal, meet the needs of production and domestic and foreign trade, creating huge economic and social benefits, while safeguarding the operational safety of bulk liquid chemicals, maintenance of port operations, protection of shipping, handling, storage, safety of lives and property as well as the entire city is of great significance.
Multi-Asset Option Pricing Based on Exponential Lévy Process
Authors: Liu Nan , Wang Mei Ling , Lü Xue Bin
Published: August 2013

The multi-dimensional Esscher transform was used to find a locally equivalent martingale measure to price the options based on multi-asset. An integro-differential equation was driven for the prices of multi-asset options. The numerical method based on the Fourier transform was used to calculate some special multi-asset options in exponential Lévy models. As an example we give the calculation of extreme options.
Design of the Flight Control System for a Small-Scale Helicopter
Authors: Du Yu Hu , Fang Jian Cheng
Published: August 2013

Compared with the fixed-wing aerial vehicles, small-scale unmanned helicopter (SUH) has the advantages of taking off and landing vertically, cruising under ultra low speed, and sustained hovering in the air. SUH has properties of nonlinear, unstable, strongly coupling, and applying control system for SUH is considered as a challenging task. This paper presents the design of the flight control system for a SUH. This flight control system consists of two parts, namely, ground station and onboard part. Various experiments have been conducted to test the performance of this flight control system, and some of the results are presented at the end.
Bargaining in a Push Supply Chain System under Partial Cross Ownership
Authors: Chen Ji Guang , Hu Qi Ying
Published: August 2013

Supply chain under partial cross ownership (PCO) refers to the dyad in which each one holds part of its partners shares. In a two-echelon push supply chain under the partial cross ownership, when the operational decisions are bargained, the supply chain is coordinated, and the allocation of the chain profit is dependent on the bargain coefficients and the reserve profits, and independent of the PCO structure: letting the retailer hold part of the suppliers shares doesnt affect the chain efficiency and both players profits. Similarly, letting the supplier hold part of the retailers shares doesnt affect the chain efficiency and both players profits.
Research on Financial Management Method of Fixed Assets of Large Enterprise Based on Computer Information Technology
Authors: Xia Wei Hua
Published: August 2013

for large enterprises, the fixed assets of enterprise are the material foundation for the development of enterprises. It is of important significance to do well the financial management of fixed assets. In China, many large enterprises are the manufacturing enterprises. The profit space of manufacturing enterprises is relatively low. In this case, it must strengthen the management level of enterprise fixed assets, improve the use efficiency of fixed assets, reduce production costs, so as to make the enterprises have a greater economic benefits. In this background, this paper has established the financial management scheme controlled by computer for the fixed assets of large enterprise, and has established the investment planning mathematical model of the double financial management of the fixed assets. Besides, it has made rational financial allocation of fixed assets for the large enterprises, which has obtained the financial management objective function of enterprises maximum benefits. Finally, the paper combines with the VB computer information software, it takes a large enterprise as an example to control the program for its financial investment, and obtains the optimal allocation model of fixed assets, which provides theoretical guidance for the study of financial management of large enterprises.
Patent Pledge Evaluation Model Construction Based on the AHP
Authors: Yu Yan , Li Jun
Published: August 2013

Through profound understanding of the patent pledge financing, this paper established pledge evaluation influence factors. Based on AHP method, the paper determined a pledge influence degree index system to calculate the influence degree of these specific indicators on the value of patent right, and built a concrete model to evaluate the price for a patent right in the pledge the special conditions.
The Evolution of Adaptive IT Capability Based on Agent-Based Simulation: From Routines Perspective
Authors: Bai Bing , Guo Zhi Qiong
Published: August 2013

The evolution of adaptive IT capability in the ever-changing business environment are not well explained. To fill this gap, this paper depicts a micro-interpretation of the evolution of adaptive IT capabilities from a routines perspective, and uses the agent-based simulation methodology to simulate the evolutionary process of adaptive IT capability as well as to identify the underlying principles.
Machining Monitoring and Database System Based on PLC and Kingview
Authors: Tang Ming Mei , Yang Mo , Wei Cai Qiao , Tang Xiao Rong
Published: August 2013

Four convex surfaces distributed along the circumference of cylinder parts need to be milled. Restricted by the processing way, sometimes the workpiece is not finished in this process after it is removed from the machine tool, which may influence the subsequent process. A monitoring system based on S7-200PLC and Kingview is designed in order to achieve two effects: firstly, this system can give an alarm when the workpiece is removed from machine tool if it is not finished; secondly, this system can set up a database and save processing information. The application result is analyzed.
Trajectory Generation for Inner V-Shaped Surface
Authors: Chen Yan , Chen Wen Zhuo , Chen Ken , Shao Jun Yi , Zhang Wei Ming
Published: August 2013

V-shaped surface with two planes linked by an arc surface is widely used in structure design, such as inlet duct. According to its characteristic, the transverse painting method is adopted to plan painting trajectory for its inner surface. Along the curve of the cross-section, the plane area is painted under the uniform speed of spray pattern and the arc area is painted under the uniformly accelerated and decelerated motion. The maximum speed is calculated by the transfer efficiency of the plane area and arc area. Experimental tests and evaluation are carried out on an arc-transit duct with rectangular cross-section. The results show that in this approach, the maximum positive relative deviation, maximum negative relative deviation and average relative deviation are obviously lower than those with equal painting speed on all surface.
Entropy-Based City Tunnel Real-Time Traffic Incident Detection Clustering Algorithm
Authors: Li Xiao Feng , Gao Wei Wei , Wang Xue Mei
Published: August 2013

The use of spatial clustering technology has important practical significance to obtain useful information. According to the characteristics of city tunnel real-time traffic ,then, put forward ECRT (Entropy-based City Tunnel Real-time), the object associated with the city tunnel as real-time traffic properties to calculate the entropy of information between the city tunnel, based on information entropy change to achieve real-time traffic urban tunnel clustering. Algorithm used in the actual data set ECRT test. The results showed that the algorithm ECRT is effective.
The Powertrain in Vehicle Sound Power Test Method Research
Authors: Wang Xiu Feng , Shi Jie
Published: August 2013

In this paper, an experimental study on the powertrain in vehicle sound power test was presented. The necessary parts retrofits and acoustic treatments for the powertrain sound power test in the vehicle were listed. The criteria and correction method of the appropriate background noise level for the powertrain sound power level test in the vehicle were discussed. The powertrain sound power tests in the vehicle were achieved in the low noise chassis Dynamometer in the semi-anechoic chamber. Based on the test results, the acoustic component contributions for the powertrain sound power levels were given .
Fault Detection System of Automobile Engine Based on Correlation Dimension Feature Extraction
Authors: Zeng Xian Heng , Yin Li Hua
Published: August 2013

According to the high fault rate and the great difficulty of diagnosis for the automobile engine, an automobile engine faults detection system was designed. Because the vibration signal of the engine could reflect the faults types to a great extent, a fault detection method was proposed based on the extraction of the vibration signal correlation dimension. The collected vibration signal which was from different type of automobile engines was processed and analyzed. The correlation dimension was extracted and an improved correlation algorithm was proposed in the system, the computational accuracy was improved, and the standard deviation of the improved algorithm lowers about 50% in comparison with the traditional algorithm, the classification performance is raised variously, the excellent detection performance was showed in the system. The detection result shows that the correlation dimension feature extraction method that this paper proposed can detect and diagnose different types of automobile engine faults such as start subsystem fault, ignition subsystem fault, fuel supply subsystem, etc. The detection conclusion was stable and the simulation result has much great application performance.
The Detecting System of Powder Chamber Volume with Artillery Stowage's Software Design
Authors: Song Nuan , Yu Yan , Li Jun , Tang Yan Kun
Published: August 2013

The detection system of Powder chamber volume with artillery in the paper of d ata acquisition, storage, processing and software design, in full consideration of the whole test system after the possible problems in the process of detection, the MCS - 51 MCU assembly language programming and modular structure design method achieve the powder chamber volume detecting system of software design.
An Data Correction Method for Hydrological Monitoring Based on Improved BP Neural Network
Authors: Zhang Jia Hua , Wang Xin , Gu Yan , Xu Li Zhong , Fan Tang Huai
Published: August 2013

For hydrological monitoring, the missing and distorted sensor data may directly affect the reliability of the acquired information. To address such problems, an information fusion algorithm for sensor data correction based on the spatio-temporal correlation of hydrological monitoring information is proposed in this paper. A monitoring station unit whose core device is FPGA (Field Programmable Gate Array) is employed as hardware platform and fusion of the data collected by the monitoring station unit is performed using an improved BP (Back Propagation) neural network. This work uses the horizontal and vertical correlation of flow velocity distribution to correct flow velocity. The simulation experimental results show that this algorithm can be used for the correction of both random and gross error of sensor data.
Analog Circuit Fault Diagnosis Based on Levenberg-Marquardt Learning Algorithm
Authors: Guo Huang , Han Bao Ru , Zhang Guo Fang
Published: August 2013

This paper presents a fault diagnosis method of BP neural network based on Levenberg-Marquardt learning algorithm. First, the use of principal component analysis to reduce the dimension of the fault sample reduced BP neural network input variables. Then use the Levenberg-Marquardt learning algorithm to adjust the network weights. Levenberg-Marquardt learning algorithm is combination of the Gauss - Newton algorithm and steepest descent algorithm. It has Gauss - Newton algorithm of local convergence and gradient descent algorithm of the global characteristic. So it has higher convergence speed, reduces the training time, to a certain extent, overcomes the problem of traditional BP network convergence speed slow and easy to fall into local minimum point. Simulation results demonstrate the correctness and accuracy of this fault diagnosis method.
Analysis on Influence of Complex Power Transmission Environment on Main Equipment Safety of JiuAn Substation
Authors: Pu Tian Jiao , Tian Ai Zhong , Fan Zheng , Li Ye , Li Dan
Published: August 2013

In the complex power transmission environment, the electromagnetic characteristics of the 500kV JiuAn transformer substation node will change, which will make an important impact on the main equipment of substation. This paper makes in-depth study on the impact of complex power transmission environment on the main equipment, such as high voltage, long-term heavy load, changes of run mode and forced outage. On this basis, PSCAD Software is used to simulate this model, and the simulation result is analyzed. It is significant to ensure the security of main equipment of JiuAn substation.
Study on Collection Efficiency of Buoy in Wave Power Generation
Authors: Wang Yan Gang , Tong Xing Hua , Zhu Lin Sen , Liu Yong
Published: August 2013

Efficiency is a crucial target in wave power generation. Collection efficiency is the first part in the whole power generation proceeding, which is particularly important. In this paper, six buoys with different radius and different height are selected to look for rational structure for higher efficiency. Force, velocity, absorbed energy and motion tendency are analyzed using simulation. The characteristics on the collection efficiency of buoy have been gotten.
Study on Simulation System of Relay Protection for Smart Substation
Authors: Zhang Pan , Zhang Yan Xia , Xuan Wen Bo , Zhang Hong Yuan , Tian Bin Bn
Published: August 2013

A simulation system of dynamic characteristics of relay protection based on smart substation was exploit in this paper. The necessary information was extracted form SCD configurations file of smart substation and fault recording document, the different frequency of sampled data was transformed and unified, the action process of relay protection equipment is simulated with operating equation and action characteristics which is advance defined or self-defined, the process from normal to fault is reappeared by graphics in this system. The system, which was opening and expansibility, was suitable for reproducing dynamic characteristics of protection in smart substation, also was applicable to develop new principle protection equipment.
Research on Networking of the Large Capacity Power Backbone Transmission Network Based on Cross Technology
Authors: Ni Jun Hong , Song Shi Cong , Zhao Zhen Dong
Published: August 2013

The 12th Five-Year Plan requires the power backbone transmission network to be with large particles and high bandwidth. The new technology-OTN can meet the requests. In addition, OTN makes up for the limitation of small particles transmission of SDH and the defects of WDM networking. Cross is the key technology of OTN. OTN electrical, optical and photoelectrical hybrid cross techniques and their advantages and disadvantages are introduced in this paper. At last, three kinds of cross network strategies are put forward to meet the needs of the future development of Power backbone transmission network, which make the theoretical foundation for the construction of the net.
Research on Optimal Gradient - Climbing Algorithm in Wind Power Generation
Authors: Zhao Qiang , Cui Chang
Published: August 2013

Maximum power point tracking for wind power generation system fixed step climbing algorithm prone to miscalculation and oscillation shortcomings. Adaptive improved optimal gradient method is put forward to overcome the shortcomings and optimize the existing fixed step climbing algorithm. By Controlling Buck Converter duty radio rapidly match between wind power generation system and load impedance. The simulation result shows that the anti-interference and convergence of the improved hill-climb search algorithm is better than that of the traditional one.
Realization of Fixed Switching Frequency Direct Power Control for Three-Phase AC/DC Converter
Authors: Wang Yun Liang , Zhao Yong Le
Published: August 2013

This paper presents fixed switching frequency direct power control (FSF-DPC) for three-phase AC/DC converter. Sensorless control strategies based on virtual-flux can optimize the performance of the system. In this paper, realization of pulse width modulation method for FSF-DPC is presented. The simulation results show that the system running performance is good.
Application of EMI Filter in Design of Switching Power Supply
Authors: Guo Pan Feng , Song Jian , Zhang Hong , Li Xin , Lu Rui
Published: August 2013

Because of its high reliability and stable output, switching power supply is widely used in power electronic systems, but it is can not be ignored that its self-generated electromagnetic has a profound effect on the whole system. In order to suppress conducted interference generated by switching power supply, this article proposed a cascaded technology about the integrated EMI filter, and a simulation is carried out for the power converter output waveform. Experimental results show that this cascaded technology about the integrated EMI filter has a good inhibition on the harmonic.
Finite Element Analysis of Shelves Manipulator Bracket Based on Solidworks
Authors: Ge Wei Wei , Zhang Sen , Sun Wei Li , Li Yuan Yuan
Published: August 2013

One of the main logistics function is handling and transporting which happens with very high frequency in the logistics system and occupies an important part of logistics cost. An automated handling system, such as shelves manipulator bracket, is quite necessary because of its cost of large manpower and time. According to the software Solidworks, the model of the shelves manipulator bracket can be established and analyzed by the plug-in of COSMOS Works. The loads and boundary condition of the bracket is calculated through the actual situation, and the stress characters has been obtained as soon as pretreatment is done. The FEA method that used by Solidworks has provided a new though about logistics devices.