bluuebunny/crossref_metadata_2025 huggingface dataset:
The Design of Operation and Maintenance Management System about IT Platform Based on Tivoli
Authors: Shi Fen Su , Zhou Yang , Shi Pan
Published: August 2014

At present, many domestic industries don’t have perfect operation and maintenance management systems for their IT platform. Most of the daily maintenance work is passive response after the problem occurred rather than discovery in advance, which will bring the potential risks to IT system running smoothly. Therefore it is necessary to monitor and manage the existing IT core equipment, to improve the security and stability of the core production and enhance the satisfaction of business department. In addition, through the establishment of an association between centralized monitoring and process management platform, the system standardizes the operational work, and improves work efficiency.Maintenance management system based on Tivoli[1] is mainly to complete the monitoring and management of the IT infrastructure, used in finance, electric power, chemical and other industries, which includes room infrastructure, storage, networks, systems, databases and middleware. On one hand, the system centralizes event management platform integrates events from various aspects of the IT infrastructure, takes a rich deal and then provides intuitive monitoring for operational management. Moreover it integrates process management platform so as to complete creating work orders, processing and other operations. On the other hand, the system will integrate the monitoring results of existing business into the monitoring interface, and implements IT knowledge sharing.
Design and Optimize the Branch Pattern of Herringbone Well
Authors: Liu Zhen Yu , Yang Hai Tao , Chen Hong Liang , Yang Dong Sheng , Wang Hu Zhen , Yang Wan Wei
Published: August 2014

This article analyzes the influence of different branch number, branch length, branch angle on the productivity of the herringbone well. It also summarizes the strongest influence parameters and the weakest influence parameters. Provide theoretical guidance for the formulation of herringbone well development plan. The results show that the maximum effect parameter is branch length, then branch number and branch angle the weakest.
Design and Simulation for Braking System of FSAE Racing Car
Authors: Pei Tang , Liu Fu Hao , Chen Jun Jie
Published: August 2014

This paper introduces the method of braking system design for FSAE racing car. Based on the rules of FSAE, the requirements of braking performance were analyzed and the layout was confirmed. The forces of the braking system were analyzed under different braking strengths. The simulation results show that the ?design of the braking system ?can ?meet the strength requirements. Key words: Design ; Simulation ;FSAE; Racing car
Electromagnetic Simulation and Dynamic Analysis about the Electromagnetic Propelling System of Magnetic Suspension Launcher
Authors: Zhang Yun Sheng , Chen Xiao Ning , Huang Li Yang , Chen Peng
Published: August 2014

Launcher is widely used in rescue and delivering items. On the basis of the electromagnetic theory, magnetic suspension principle and linear motor theory, we put forward the idea of magnetic suspension launcher. Through the theoretical research and simulation analysis, an in- depth study is also given to the distribution of the electromagnetic field and other influential factors concerning the propelling system, which provides the basis for the design of magnetic suspension launcher.
Analysis the Tool Wear of Screw Drill during the Drilling of Steel X04Cr16Ni12MnTiN
Authors: Jurko Jozef , Panda Anton , Pandová Iveta
Published: August 2014

This paper presents the conclusions the tool wear of screw drill for steel X04Cr16Ni12MnTiN. The results of the article are conclusions for working theory and practice for drilling of steel X04Cr16Ni12MnTiN. Based on the cutting tests, cutting speeds of 50 to 90 m/min, feed rate of 0.02 to 0.8 mm and screw drill carbide monolite. Wear criteria are used in practice. For special cases may also prescribe criteria wear EA (Edge Annihiliation) corresponding to the total destruction of the tip cutting wedge.
Intensive CNC Machine Programming with Circular Pattern Algorithm
Authors: Gao Qi , Li Ying
Published: August 2014

Many difficulties may be encountered when preparing CNC programs using conventional programming or canned cycle programming. This study tries to establish a practical common algorithm allowing the drilling of holes arranged in multiple circular patterns. The programmed algorithm can easily be adapted to any modern CNC unit to create a user cycle or subroutine. To test the capabilities of this algorithm, two case studies were developed. A number of samples were produced successfully. The new algorithm shows high efficiency in the part program establishment and offers the advantage of decreasing the encoding errors.
Permeability Improvement Technology of Directional Hydraulic Fracturing in Low Permeability
Authors: Chen Xue Xi , Bi Rui Qing , Jin Wen Guang , Xu Yong
Published: August 2014

According to the conventional fracturing could easily lead to the local stress concentration of coal, the effect of pressure relief and permeability improvement is not ideal. The mechanism of directional hydraulic fracturing is analyzed and the parameters such as the layout of directional hole, the fracturing hole sealing, the minimum cracking pressure are discussed, then the field application tests are carried out. The results show that the directional hydraulic fracturing effect is better than that of ordinary fracturing hole and the maximum concentration and the average drainage scalar is respectively 3.75 times and 4 times of the ordinary hole pumping gas fracturing effects. The effect of permeability improvement is remarkable.
Corrosion Resistance of X52 Pipeline Steel at Sea Mud Zone
Authors: Zhao Xia , Liu Shuan , Hou Bao Rong
Published: August 2014

Corrosion resistance of X52 pipeline steel at sea mud zone in Qingdao Huiquan test station was investigated by using Tafel polarization curves and electrochemical impedance spectroscopy (EIS). The morphology and chemical composition of the corrosion products were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results indicated that the corrosion current density of X52 pipeline steel increased with immersion time. The corrosion products were loose and mainly included Fe3O4, Fe2O3 and FeOCl, which absorbed on the specimen surface accelerating the cathodic depolarization reaction.
Research on Attitude Singularity Problem of Small Tail-Sitter Aircraft
Authors: Wu Bin , Chen Peng , Hu Yong Jiang , Wang Chang Long
Published: August 2014

Singularity problem in attitude estimation of small tail-sitter aircraft with traditional algorithm is researched. According to the flight characteristics of small tail-sitter aircraft, a new algorithm is proposed. Vertical Euler angles whose singularity points are away from standard Euler angles are introduced. Only one set of angles are used in horizontal or near-vertical state to avoid singularity. Simulation results show that attitude angles can vary continuously and have high accuracy under the condition of a large tilting angle.
Simulation and Optimization for the Cooling System of Heavy Vehicle Engine
Authors: Li Wen Shang , Long Yu Hong , Liu Jun Liang , Cai Jie , Zhan Xin
Published: August 2014

An engine cooling system of heavy vehicle was used as a research object in this thesis. Engine system model was designed with KULI software according to wind tunnel testing data of heat exchanger provided by supplier. Simulation calculation provides optimization program based on the results. The result is that it can simulate calculation with KULI software, in the early design on a cooling system of heavy vehicle engine. The study provides a theoretical basis for the design of a cooling system of heavy vehicle engine, improve the efficiency and save the cost.
Structural Optimization of Drilling Bed for Deep Hole Drilling Machine
Authors: Guo Yin Sai , Zhang Yi , Cheng Ming Ke
Published: August 2014

Taking the drilling bed of Z8016 deep hole drilling machine as the research object, a modal analysis of drilling bed structure is performed by ANSYS software. Assuming that the low-order natural frequencies basically remain unchanged, the structure of the drilling bed is analyzed and modified so as to decrease its weight. The bed structure is selected based on ANSYS, that is to say, the structural parameters of the drilling bed are optimized in the condition of fundamental frequency constraints, which takes wall thickness, ribbed plate thickness and the diameter of ribbed plate holes of the drilling bed as design variables. Compared with the original one, the optimal drilling bed has better dynamic stiffness, reduces material consumption, lowers the cost of the drilling bed and achieves the optimal goal.
The Design Research on the Key Components of Low-Speed Marine Diesel Engine
Authors: Liu Tin Tin , Chen Guo Jin , Liu Zhong Min
Published: August 2014

This paper is mainly discussed the establishment of the unified constraint expression of simulation optimization model. Express all kinds of element constraints with unified physical mathematical mapping mechanism, uniform the model representation of product components in each domain and establish the unified expression model, in order to facilitate the follow-up simulation solution of multi-domain constraint system.
Thermal Deformation Analysis of a Magnetic Climbing Wall Car Frame Based on the ANSYS
Authors: Lv Qiong Ying , Mei Yu Shi , Jia Bing , Tao Xi Jia
Published: August 2014

In order to ensure the magnetic wall-climbing car which is applied to installation and maintenance of wind power work normally, the ambient temperature will cause the formation of "expansion and contraction", to avoid that affects the accuracy and performance of the equipment, thermal deformation analysis of its frame should be conduct. Using ANSYS to carry on the finite element analysis of the magnetic wall-climbing car frame. The material of the frame is steel 45, which have heat treated. That can get a better toughness, ductility and wear resistance. Then import the three-dimensional model of the frame to the ANSYS software, select the frame tetrahedral meshing method. Its first thermal analysis, and then add the static structural analysis. Solving the frame at-50°C, 50°C thermal deformation, the biggest overall deformation change between-0.89636mm and 0.34858mm. which less than one-thousandth of the maximum overall length is 1750mm of the frame, and meet the design requirements.
Develop the System of Three Dimensional Parametric Design of Planetary Gear Reducer Parts Library Base on CS Structure
Authors: Zhang Guo Ji , Meng Gui Yun , Liu Ming Wei
Published: August 2014

the parts library system of three dimensional parametric design of planetary gear base on CS structure which use SoildWorks as the CAD development platform, which establish the base parts library, can automatically generate the required size specifications of the parts. The parts library adopts template file as the driving source, openness of strong, fast to run, convenient for management and maintenance, is a kind of ideal driven approach so far, this method is also suitable for a parametric function and the development interface of the CAD system, such as Pro/E, UG, etc.
Influence of pH Values on the Morphology and Down-Conversion Luminescence Properties of Zinc Tungstate Micro Nano Crystal Synthesized by a Hydrothermal Method
Authors: Wang Hui , Liu Lian Li , Hou Bing , Kou Jun Jiao , Wang Li Li
Published: August 2014

As the raw materials of Na2WO4•2H2O and ZnSO4•7H2O, ZnWO4 micron spheres and nanorods were synthesized with CH3COOH as the complexing agent by a hydrothermal method at 180 °C for 24h. We analyzed the effect of different pH values in reaction solutions on phase compositions, morphologies and luminescent properties of the ZnWO4 powders. The as-synthesized products were characterized by XRD and SEM. The down-conversion spectrum was measured with spectrophotometer under the excitation wavelength of 291nm. The results indicated that there was a wide emission peaks at 400~550nm. The luminescent intensities of ZnWO4 nanorods synthesized at pH value of 9, 10 and 11 were much stronger than that of ZnWO4 micron spheres synthesized between the pH values of 4 to 8.
Study on Bladder Forming of the Shallow Basin-Shaped Aluminum Sheet Parts
Authors: Tu Ji Lin , Wang Yong Jun , Wei Sheng Min , Hui Xiao Peng , Qiu Chao Bin
Published: August 2014

The shallow basin-shaped aluminum sheet part had buckling defects after the bladder forming. Analysis the buckling defects’ mechanism, according to these, we proposed one step bladder forming process, used rolling leveler which could reduced the buckling height to level sheet before bladder forming, and made experiments to compare the structure effect of buckling height among the four kinds of die structure. The results showed that the one step bladder forming process is valid, and used the original die with sheet edge fold when it was bladder forming.
Research on the Common Rail Transport System Building in Integration System of Urban Rail Transit in Hohhot
Authors: Li Cheng Bing , Zhang Yi , Guo Rui Xue
Published: August 2014

Based on the impact analysis of common rail transportation on urban rail transit and comprehensive consideration of Hohhot, including passenger flow characteristic analysis and related product design principle, this paper studies the impact of common rail transport system on the urban rail transit and describes the product design of common rail transport system of Hohhot in two aspects: common rail train stop plan and the nature of the passenger flow, which is dedicated to provide relevant theoretical basis for the rail transit planning and construction of Hohhot in the future.
Key words: the integration of urban rail transit; common rail transport; product design; Hohhot
An Inquiry into the Sustainable Development of Cellulosic Ethanol in Tianjin, China
Authors: Feng Xin , Li Ling , Mao An Qi , Feng Xiao Tian , Xie Yu Hong
Published: August 2014

Based on the establishment of evaluation framework for sustainable development of cellulosic ethanol, Analytic Hierarchy Process (AHP) method was used to evaluate the sustainable development of cellulosic ethanol from 2001 to 2010 in Tianjin. The result shows that environmental issues are playing an important role in the cellulosic ethanol development in Tianjin. Compared with coal and oil, cellulosic ethanol is more sustainable. However, with the expansion of the production scale, the greenhouse gas emissions increase. Therefore, in order to control air pollutants including greenhouse gas and develop cellulosic ethanol better, the study of optimal developing scale and speed is the best research direction.
Main Technologies of Life Support System of Evacuated Tube Transportation Vehicle Passenger Cabin
Authors: Zhang Yao Ping
Published: August 2014

The passenger cabin of evacuated tube transportation vehicle is the airproof shell. In order to ensure the safety of passengers, riding comfort and good health, the cabin should be offered with the right pressure, oxygen and temperature-humidity environment, while eliminating carbon dioxide and impurities, providing clean air, retaining a reasonable proportion of inert gas by the life support systems. Passenger cabin pressure system is specified to a mix of oxygen-nitrogen atmospheres, close to 1 atm, the oxygen partial pressure is slightly higher than the value outside the tube, and carrying amount of compressed air decided by the oxygen demand standard 0.038kg/ (person • h); drying phenomenon does not occur in the cabin, but dehumidifying to control the humidity is needed; Sorbent dosage and purification device design is based on carbon dioxide emissions 24L/ (person • h). These functions are attained respectively by some technologies such as cabin pressure controlling, gas supplying, temperature and humidity controlling, air purification and security technology.
Modeling and Predicting Surface Roughness for the Grinding Process
Authors: Wen Xiao Ni
Published: August 2014

This paper proposes a new algorithm for predicting the cross-sectional surface roughness of the workpiece for the grinding process, which reduces three-dimensional modeling to two-dimensional modeling by virtue of the cross-sectional area of the undeformed grinding chip. Besides, this paper develops a search technique to figure out systematically the surface roughness in order to determine the final cross-sectional surface roughness produced by thousands of grinding wheel grains with randomly distributed protrusion heights. The simulated results are consistent with the measurement data, which proves the effectiveness of the proposed algorithm.
A Band-Gap Voltage Reference for LDO Circuit
Authors: Zhang Wei Juan , Zhao Yan , Wang Ju , Li Kun
Published: August 2014

A band-gap voltage reference applicable for LDO circuit was designed. The band-gap voltage reference with lower change rate and low temperature-drift and high PSRR was acquired, which uses the two stage operational amplifier as the input terminal, and the miller compensation circuit was adopted in order to improve the stability of the voltage reference circuit. The circuit was simulated with Cadence tool and 0.5μm CMOS model. The results show that the reference voltage is 1.2182V, the PSRR of band-gap voltage reference is-76.8dB. The measured results indicated that the designed band-gap voltage reference is prospective for application in LDO circuit.
A Photovoltaic Soft Switching Boost Circuit
Authors: Yu Yun Jun , Peng Sui , Xu Zi Heng , Tong Chao , Xue Yun Tao
Published: August 2014

This paper study a new type of photovoltaic soft switching boost circuit according the present photovoltaic soft switching boost circuit auxiliary switch worked in hard switching situation and the gain of soft switching boost circuit is not good. The operation principle of the circuit and the detailed implementation process was analyzed. The parameters of the circuit were counted. The phase shifting control algorithm was used to control the circuit. The soft switching boost circuit has the following characteristics: (1) The main switch and auxiliary switch can realize zero current zero voltage turn-on and turn off, improve the conversion efficiency of DC side; (2) The boost effect is good and the gain is high; (3) High output power quality, voltage fluctuation is low; (4) The control is simple.
Calculate Formation Velocity from Vertical Seismic Profiling Data
Authors: Zhou Jun , Xie Chun Hui , Yang Peng
Published: August 2014

Extracting interval velocity is one of important applications of VSP data. Also, imaging of VSP data requires accurate velocity information. Two kinds of algorithms on the assumption of straight-ray and curve-ray are employed to calculate interval velocity respectively. Comparison of the extracted velocity from the two methods above with real velocity shows that both methods are suitable for VSP data recorded in the vicinity of well, while the algorithm derived from straight-ray fails in the long-offset. Moreover, the curve-ray is more reliable when there are some random errors due to the first arrivals picking.
HMI Design of Lead-Acid Battery Retreading System Based on DWIN DGUS Screen
Authors: Hu Xiao Ying , He Jian Zhong
Published: August 2014

Lead-acid battery retreading system is used to improve the discharge performance of lead-acid batteries. And in the system there are too many electrical parameters, such as electric current, voltage and so on, have to been set up. So HMI design plays a significant role in the whole system. This paper offers a method of using DWIN DGUS screen to finish the HMI design of lead-acid battery retreading system. And it introduces the DWIN_V4.9 and OS secondary development platform in detail. Then it describes how to use these two tools to achieve basic functions, such as touching and passwords landing. After applying the HMI design to the system, switching interfaces, using passwords, inputting parameters and other operations all have been achieved successfully.
A Certain Type of Artillery Open Loop Servo System Reform Research Allocation Zoom Multiples
Authors: Jing Zhi Sheng , Liu Yun , Tu Shan Chao
Published: August 2014

For mobile devices with existing servo repair problems encountered. Eager to achieve functional replacement of the existing servo device through the use of new technologies. Mechatronic transformation active servo control device artillery, with a small technical risk, less funding, renovation cycle is short, etc., can form new parts supply capacity, which can increase the active duty army air defense artillery maintenance support capability, to extend the service life of the same model.
Medical Building Materials of Structural Properties and Electromagnetic Interference Shielding in the Quartz Crystal Plane Coated Ni Based Thin Film
Authors: Hung Fei Shuo
Published: August 2014

Medical use quartz components for electromagnetic shielding materials research topics very rarely, therefore, intend to systematic development of coated quartz glass materials. The considerations for against electromagnetic waves (Electromagnetic Interference Shielding, EMI), one conductive coating film is required. The anti-high-frequency electromagnetic waves also need magnetic coating film. The thin film is translucent with a poor crystallinity, must be heat-treated to have good crystallization and conductivity, and therefore finds the feasible of Ni-based coating and interface effects also have the academic importance. This program is to deposit Ni-based thin film on different quartz planes (Ni/SiO2), and explores the effect of heat treatment on the structure. That contains crystalline characteristics (doping concentration: the Ni-base matrix doping Fe, 10at%~ 50at.%), optical properties and electrical conductivity. Finally, the electromagnetic shielding effect (EMI) of the coating structure is assessed. So, the application data for the characteristics of interface layer and anti-electromagnetic (EMI) properties are obtained. building materials extended to the health care system materials systems. The results show that Sn-40Al-xNi film increased the electromagnetic interference (EMI) shielding after annealed. For the Sn-40Al-10Ni films with higher Ni atomic concentration, the low frequency EMI shielding could be improved. For the sputtering films the annealed treatment not only had higher electric conductivity but also increased the high frequency EMI shielding.
The Number of Runs and its Application in Biological Medicine Testing
Authors: Zhao Li Mian , Huang Ji Ting
Published: August 2014

Based on the elementary method, the formulas of the probability distribution of the number of runs and its mathematical expectation and variance are proposed. Furthermore, an application of the number of runs in biological medicine testing is discussed.
The Resulting Toolpath of Turning a Special Surface on CNC Lathe
Authors: Tian Chun Xia
Published: August 2014

The surface of workpiece in NC turning process, often encounter the workpiece surface cross quadrant arc, if the use of the same processing methods and ordinary arc, often leads to the emergence of cross quadrant arc machining shape error, through the research of the NC machining of workpiece surface cross quadrant arc, CNC turning reasonable go knife and tool path in NC turning, solve cross quadrant arc, some defects in the surface of the workpiece processing, ensure the machining with circular arc profile theory demands, so as to improve the machining quality and the machining accuracy requirements.
Theoretical Study on Bridge Structure Condition Evaluation Based on Health Monitoring Data
Authors: Wei Zhao Lan , Yu Rui , Cheng Chu Yun
Published: August 2014

After processed the signals obtained from monitoring system, one theory of condition evaluation was proposed on basis of a new evaluation parameter—index variation. One new condition grade division method was proposed from approximate statistic distribution of index variation, and as per the concept of confidence degree and confidence interval. Because the monitoring data and the standard of condition grade division were all interval numbers, interval extension evaluation theory was adopted to establish the model of condition evaluation. Set-Valued Statistics and gravity center based decision theory were introduced to divide weight into subjective weight and objective weight to make calculation. This evaluation method was found to be reasonable and had good project practicability.
A Novel of L-Serine/Chitosan Electrochemical Sensor for Determination of Paracetamol
Authors: Tan Fu Neng , Pang Xue Hui , Zhou Yun Bo
Published: August 2014

A novel type of L-serine and chitosan modified glassy carbon electrode (L-Ser/CS-GCE) as a electrochemical sensor for determination of paracetamol was fabricated. With potassium ferricyanide as the probe, electrochemical properties of this sensor were characterized via electrochemical impedance spectroscopy(EIS) and measured EIS data were fitted with an equivalent circuit to investigate the detailed information about the electrode/solution interface. The electrochemical behavior of paracetamol on L-Ser/CS-GCE was studied via Cyclic voltammetry(CV). This electrochemical sensor showed an excellent electrocatalytic activity for the oxidation of paracetamol in pH4.9 acetate buffer solution and accelerated electron transfer between the electrode and paracetamol. Linear scan voltammetry (LSV) was used for determination of paracetamol. Peak current increased linearly with increasing paracetamol concentration in the range of 2.0×10-6～1.0×10 -3mol/L and the detection limit was found to be 8.3×10-7mol/L. The electrochemical sensor showed good stability and reproducibility. The practical application of the electrochemical sensor was successfully applied for determining the concentration of paracetamol in commercial acetaminophen tablets.
A Single-Cell Replacement Strategy on Electronic Array Self-Healing
Authors: Meng Tian Zhen , Cai Jin Yan , Meng Ya Feng , Zhu Sai
Published: August 2014

Embryonic bionic hardware has made great progress since its appearance, while self-healing strategies have some disadvantages. Based on the repair methods scholars proposed, a new strategy on the self-repairing of electronic arrays was presented. The key idea is when cells in the array fail, using spare cells replace them, with no change of the normal cells. This self-repairing strategy contains three parts, that is, an array of working cells, a layer of spare cells and a control layer. The theoretical analysis and simulation results show the new single-cell replacement strategy has the following advantages: easier implementation and largest self-healing capacity.
An Image Positioning Method of Automatic Random Walker Based on IFS Edge Detection
Authors: Qi Yin Cheng , Li Ting , Xi Ming Xiao , Zhao Zhen Bing , Cai Yin Ping
Published: August 2014

The segmentation method of classical random walker needs to select seed points artificially, and may cause incomplete or inaccurate segmentation. In view of these problems, this paper presents an image positioning method of automatic random walker based on IFS (Intuitionistic Fuzzy Set). IFS edge detection method is used to get the edge information of image, and then the connected domains are found out in image edge using the morphology method. Select the central pixels of each connected domain as seed points for automatic random walker, and then segment the IFS edge image by random walker. Experimental results show that the proposed method overcomes the application limitation of semi-automatic random walker algorithm, and improves the accuracy of image positioning.
Near Net Shape Forming Process of a Titanium Alloy Component Using Hot Isostatic Pressing with Graphite Mould
Authors: Xue Peng Ju , Wu Yan , Huang Jun , Wei Qing Song , Shi Yu Sheng , Yan Chun Ze
Published: August 2014

Ti6Al4V component has been formed by hot isostatic pressing (HIPping) using internal graphite mould with Ni isolation layer. The shape of the graphite had no deformation after HIPping. The Ni isolation layer with a thickness of approximately 5μm on graphite before HIPping was diffused into the dense Ti6Al4V component surface and formed a uniform, compact and crack free layer with a thickness of approximately 100μm after HIPping. The Ni diffusion layer is not damaged after removing the graphite mould by unpolluted sandblasting. The interface topography and the elements diffusion have been assessed and it is found that the non-machined surface of Ti6Al4V component was improved by using graphite mould than those used mild steel. The roughness of non-machined surface after removing the graphite mould by sandblasting is Ra=1.6μm, and the roughness of non-machined surface after removing the mild steel by acid pickling is Ra=10.8μm. It is concluded that graphite mould could be used for the HIPping process to produce complex-shaped components.
An Improved Algorithm for Real-Time Moving Target Detection Based on Gaussian Mixture Model
Authors: Chen Xue Yuan , Lv Xia Fu , Liu Jie
Published: August 2014

Gaussian Mixture Model is a popular method to detect moving targets for static cameras. Since the traditional Gaussian Mixture Model has a poor adaptability when the illumination is changing in the scene and has passive learning rate, this paper describes a method that can detect illumination variation and update the learning rate adaptively. It proposes an approach which uses the color histogram matching algorithm and adjusts the learning rate automatically after introducing illumination variation factor and model parameters. Furthermore, the proposed method can select the number of describing model component adaptively, so this method reduced the computation complexity and improved the real-time performance. The experiment results indicate that the detection system gets better robustness, adaptability and stability.
Analysis of Air Power Switch Work under Harmonic
Authors: Wang Xiao Bo , Wang Xin Tong , Huang Jian
Published: August 2014

With the improvement of people's living standards, a wide variety of home appliances gradually into the ordinary family. In these appliances, there are many various nonlinear loads, nonlinear loads generated in the process of using a large number of high harmonics, and sold on the market are mostly air switch 50Hz power under conditions of use in accordance with the design, which kinds of air switch is suitable for applications in which high harmonic supply. This article will explore this issue through theoretical research and testing methods.
Design of a Temporary Ground Wire Monitoring System and Reliability Research
Authors: Kong Ying Hui , Fu Xiang Yuan , Chen Zhi Xiong
Published: August 2014

Considering the current situation that ground wire is short of automated management, a temporary ground wire monitoring system is designed in this paper. In this system, RC 522 RFID reader chip is used to achieve reliable information collection of the state of ground wire and ZigBee chip CC2530 is used to achieve accurate information transmission. A comprehensive test is conducted. Against the interference, obstacles blocking and network congestion issues in a substation, proposes to increase routing nodes, adjust letter spacing, etc. to improve communication reliability. The system can achieve real-time monitoring of the status of temporary ground wire in a substation job site,with high reliability and good effect,which is worth being extended.
Nitrogen Doping Effects on Microstructure of Multi-Walled Carbon Nanotubes
Authors: Bing Nai Ci , Zeng Yi Yong , Gu Hao , Wang Ai Lun , Wang Li Jun
Published: August 2014

Taking Fe/NaY zeolite as catalysts, a range of nitrogen doped carbon nanotubes (N-CNTs) were synthesized by chemical vapor deposition method (CVD) at 1073K using ethanediamine, dimithylethanediamine and tetramethyl ethanediamine as nitrogen source and carbon source, respectively. The structural and compositional properties of N-CNTs were characterized by XRD, SEM and TEM. The results illustrate the microstructure of N-CNTs is strongly dependent on the N/C ratio of precursors. With the increase of N content in precursors, N-CNTs became shorter, more disorder, coarser surface and the average bamboo segment distance increased from 40 nm to 60 nm. A mechanism for the formation of the N-CNTs grown from three precursors with different N/C ratio has been proposed based on experimental observations.
Design of Plunger Limit Switch Testing System Based on Virtual Instrument Technology
Authors: Chen Shuo , Tan Cong Xiao , Fang Xiao Le
Published: August 2014

This paper introduces a plunger limit switch testing system based on Virtual Instrument Technology with servo control module and data acquisition module. The proposed system is designed for measuring contact resistance, force-displacement curve and voltage-displacement curve. And the product qualification is automatically judged according to the measured result. Field experiment shows that the parameter testing system has a stable and reliable performance with high precision.
Diesel Engine Inlet and Exhaust System Fault Detection Based on PSO-BP NN
Authors: You Zhang Ping , Zhang Wen Hui , Ye Xiao Ping
Published: August 2014

There is high failure rate in diesel engine inlet and exhaust system, so the inlet and exhaust system condition monitoring and fault diagnosis is of great significance.To overcome drawbacks of pure BP algorithm, a heuristic algorithm is adopted to give a transition from particle swarm search to gradient descending search to set up a Particle Swarm Optimized Back Propagation (PSO-BP) Neutral Network (NN). Then vibration signals have been measured from a diesel cylinder head by simulating two faults:the gas leak and abnormal lash; The diesel engine vibration frequency energy signals after wavelet packet decomposition are taken as the input feature vectors of NN. Finally, we carry out fault detection experiment by the PSO-BP NN model to validate the method. Experiment results show that the PSO-BP NN has more fast convergence speed and higher diagnosis accuracy than BP NN, and it provides a new fault detection method for engine inlet and exhaust system.
Frequency Control QPSK Modulator Based on DDS Technology
Authors: Luo Guo Qing , Yu Jian Ding , Wang Yin
Published: August 2014

This paper introduced a kind of frequency control QPSK modulator based on DDS technology,which is implemented based on FPGA.In this way, frequency control QPSK modulator is not only small size, low cost, system stability and high reliability ,but also can conveniently change the frequency of QPSK signal to adjust different environments.
Hybrid Base and Parallel Hybrid Electric Vehicle Control Strategy
Authors: Yan Shi Tong
Published: August 2014

Automotive hybrid technology development and mechanical, electrical,engine,energy technology is closely related with the development of these areas of technology, the development of hybrid technology also will be extensive. How to optimize the control strategy is the key to achieve hybrid cars low fuel consumption, low emissions targets . In the automotive power and meet other basic technical performance,and cost requirements of the premise,characteristics and operating conditions for the car's various components , control strategies to achieve a reasonable distribution of energy in the motor between the engine and effective,so that the vehicle the highest system efficiency,access to the largest vehicle fuel economy,low emissions and smooth driving performance.
Laser-Welding Spots Detection Based on Original Moment Values
Authors: Qi Xiao Long , Fang Bin , Wang Shu Mei
Published: August 2014

In the past decades, the theories of invariant moments have been researched extensively and wildly used in many fields. However, for the laser-welding spots of titanium tubes or other fixed objects, the invariant moments are inapplicable. Besides, the studies and experiments about image classification by means of the original moment values were barely proposed. In this paper, the method of classification based on original moment values is introduced, and an improved approach of KPCA (kernel principal component analysis) in order to reduce the inner-class distance of the qualified laser-welding spots is also discussed. Finally, experiments are carried out to validate the classification ability, and results show that the original moment values are suited as pattern features in classification of fixed objects.
Multi-Sensor Information Fusion and Application
Authors: Gong Ting , Yan Hui
Published: August 2014

Technology of multi-sensor information fusion is an emerging discipline and its theories and methods have been applied in many research areas. In this paper, the model and structure of multi-sensor information fusion, major technologies and methods of information fusion, theoretical system of information fusion as well as application of information fusion technology are introduced and summarized.
Data Acquisition and Processing Systems Based on LabVIEW
Authors: Qi Fu Qiang , Chi Zong Tao
Published: August 2014

In order to collect and process data effectively, express the advantage of LabVIEW, this paper presents a design method for collecting and processing data in more channel using PXI-5922 and PXI-6733 based on LabVIEW. The system can realize two channel signals generation, data collection and signal analysis.
Denoising Technology Application Research on EMD in Hydroacoustics
Authors: Yao Xin Yu
Published: August 2014

In order to effectively extract signal information from underwater acoustic environment and complete ability to denoise, based on EMD’s denoising and differences of respective autocorrelation functions between noise and signal, aiming at shortcomings of absence from stability in demarcation point between noise and signal that are in line with energy change curve, the paper puts forward a kind of EMD’s new-type denoising method that is based on characteristics of autocorrelation functions. Moreover, it verifies effectiveness of this method through a large number of simulation experiments.
Image Distortion Classification towards Quality Assessment Based on Tri-Training and Natural Scene Statistics
Authors: Xu Han Jie
Published: August 2014

An image distortion classification approach towards quality assessment is presented in this paper based on tri-training and natural scene statistics. At first, the semi-supervised learning of tri-training is employed to carry out the classification of different distortion images by the combination of labeled images with unlabeled images. Then the method of nature scene statistics is used to extract features of distortion images so as to lay a well foundation for effective classification. Through the synthetical integration of tri-training and nature scene statistics, a well effect of classification can be achieved. A series of experiment results show the performance advantages of the presented algorithm.
Research on Prediction of Air Quality Index Based on NARX and SVM
Authors: Wang Long , Bai Yan Ping
Published: August 2014

In view of the problem of increasingly serious air pollution nowadays, this paper adopts Nonlinear Auto Regressive models with Exogenous Inputs (NARX) and Support Vector Machine (SVM) for regression and prediction on the Air Quality Index (AQI). The results show that the mean squared error of train set, validation set and test set and correlation coefficient of train set, validation set and test set in NARX model are 0.0029, 0.0064, 0.0072, 0.9865, 0.9731, 0.9701, respectively. Meanwhile, the results in SVM model are 0.0119, 0.0347, 0.0159, 0.9083, 0.9612, 0.8891, respectively. The above data prove the advantage of the NARX method in the prediction of the AQI.
Investigation on the Punching Quality of Hybrid Impact Hydroforming
Authors: Wang Shao Hua , Lang Li Hui , Lin Li Jing
Published: August 2014

High energy forming technology has been widely applied in the aircraft and automobile area which means high energy works in very short time, no more than 1s. The innovative hybrid impact hydro-forming (IHF) technology is a kind of high energy forming technique. It combines hydroforming and high energy forming, which first use hydro-forming to shape large character of product, then use high energy to form small features, such as convex tables, bars etc. The present work investigates the shock wave generation of hybrid impact hydroforming. In this paper, the theory of shock wave is presented and finite element simulation was carried out by using MSC. The pressure distribution changes in the depth direction, but not in the width direction. Using this shock wave loading condition we did forming experiments. Punching occurred as a result of combined tensile and shear stress effects. Furthermore, the design precise of die and clearance between punch and die may less strict. Therefore, the research is very useful for the development and application of hybrid impact hydroforming.
Process Parameters Study on Robot Rope Hemming of the Hood
Authors: Wang Jian Qiang , Huang Ya Wen , Zhou Guang Rui , Niu Zhao Long , Cheng Zi Wen
Published: August 2014

According Robot roller hemming is known as an assembly method with high flexibility and automated rate for closures in automotive bodies. The hemming tool is manipulated by controlling the industrial robot to complete the formation of closures (i.e. doors, hoods, tailgates and trunklids). In this paper, we shall first briefly introduce the rope hemming process, detail on the impact of process parameters on the rope height, roll-in and roll-out with the FEA model to simulate the rope hemming process. Then the rope hemming defects are discussed in later sections. This paper studies the process parameters and the methods to improve the rope hemming quality and provides a good reference for the practical application.
Response Prediction of Static Modal Testing on Milling Machine Tool
Authors: Jamil Norlida , Yusoff Ahmad Razlan , Mansor Muhammad Hatifi
Published: August 2014

Milling is one of the most common manufacturing processes for automotive component, but its productivity is limited by chatter. This form of chatter is undesirable because it results in premature tool wear, poor surface finish on the machined component and the possibility of serious damage to the machine itself. Modal testing is a form of vibration testing which is able to determine the Frequency Response Function (FRF) of the mechanical test structures. In this paper, the main focus is to obtain natural frequency values for machine tool components in order to establish better conditions in the cutting process on the machine tool. For this purpose, a 3D model of the machine tool’s part is made using design software and exported to analysis software. Later on, the Finite Element Method (FEM) modal analysis was used to obtain the natural frequencies. The model is evaluated and corrected through an experimental modal test. In the experiment, the machine tool vibration is excited by impact hammer and the response of excited vibration is recorded. In the end, the result of both FEM and experimental shows a good consistency in comparison.
InSe Nanothin Film with Ar-Gas Low Vacuum Pressure
Authors: Al-Attar Falah Mustafa , Ali Mooroj
Published: August 2014

InxSe1-x (x = 0.4, 0.5, 0.6) thin films are deposited at room temperature on glass substrates with thickness ~500nm by thermal evaporation technique. The X-Ray diffraction analysis showed that both the as-deposited films In2Se3 and InSe (x= 0.4 and 0.5) are amorphous in nature while the as-deposited film In3Se2 is polycrystalline and the values of energy gap are Eg=1.44eV for In2Se3, Eg=1.16eV for InSe and Eg=0.78eV for In3Se2. The same technique used with insert Argon gas at pressure 0.1 mbar where InxSe1-x (x = 0.4, 0.5, 0.6) thin films are deposited at room temperature on glass substrates with thickness ~100nm. The X-Ray diffraction analysis showed that the as-deposited films In2Se3 are amorphous in nature while the as-deposited film InSe and In3Se2 are Nanocrystalline with grain size 33nm and 55nm respectively and the values of energy gap are Eg=1.55eV for InSe and Eg=1.28eV for In3Se2. The energy gap of InSe thin films increase with Argon gas assist and phases changes from amorphous and polycrystalline to nanostructure material by thermal vacuum deposition technique.
Research on the Theory of the Laser Shock Processing Technology
Authors: Lin Jin Lan , Fan Jian Hong
Published: August 2014

In this paper the laser shock processing technology (LSPT) is investigated theoretically. A one-dimensional theoretical model is presented to express analytically the transmission coefficient of the incident laser beam through four different layers, i.e., the air layer, the constrained layer, the plasma layer, and the absorbing coating. Based on this model, the key parameters of LSPT can be further optimized to obtain the maximum transmission coefficient and the best surface-hardening effect. This one-dimensional theoretical model presented can be further used in guiding the parameter optimization for this technology.
Three Dimensional Analysis of the Slab Reheating Furnace
Authors: Jang Jiin Yuh , Lin Chien Nan , Lee Cheng Yuan , Wang Chao Hua
Published: August 2014

This paper studies the chemical combustion reaction of coke oven gas coupled with radiation heat transfer in the slab reheating furnace. Three dimensional temperature distributions of the produced gases and slabs in the combustion furnace are investigates numerically. Numerical results reveal that the radiation heat transfer dominates the heating process in the combustion furnace; it is around 95% of total input heating energy. The heating efficiency is examined for the sake of energy saving in the combustion furnace.
The Characteristics of Boiling Heat Transfer of R-600a-oil Mixture in a Circular Tube with Porous Inserts
Authors: Wen Mao Yu , Jang Kang Jang
Published: August 2014

This investigation was carried out to study the characteristics of boiling heat transfer for hydrocarbon refrigerant R600a (isobutane)/oil mixtures flowing in a circular pipe within dispersed-copper porous inserts. The oil was the EMKARATE RL 32H with a viscosity 150 SUS. The test was conducted at a saturation temperature of 10 , vapor qualities from 0.076 to 0.87, inlet oil concentration from 0 to 3 mass% oil, mass flux of 120 1100 and heat flux of 12-65 . The effects of the concentration of the refrigerant/oil mixtures, and the sizes of inserts on the heat transfer of R-600a for present study were presented.
The Chart Method of Multi-Columns Effective Length with Difference Axial Force
Authors: Zhu Jing Lin , Zhou Dong Hua , Zheng Yao , Ouyang Zhi Lun , Han Chun Xiu
Published: August 2014

In practical engineering, multi-columns stability calculation is very common and very important. Determining the multi-columns effective length is the most important in stability calculation. So there are some nomo-graphs and formulas in Chinese Code for design of steel structures .The structures are very varied and calculation is too difficult. The nomo-graph and formulas in chinese standards are not fully applicable to a variety of situations. For example, in the multi-frame, the axial force is large difference between stories. If we determine the effective length with the nomo-graph and formulas in chinese standards, it will be unsafe in sometimes. This paper gives some nomo-graphs and formulas to determined the effective length. According to the method, we can determined the effective length quickly, and visually see the trend in the curves of effective length when the parameters change. The nomo-graph and formulas in this can be said to be a supplement to the chinese standards.
Energy Analysis for Electric Hydraulic Power Steering System of Electric Bus
Authors: Shi Guo Biao , Wang Shuai , Gu Peng , Xie Huan Xin , Lin Yi
Published: August 2014

Electric hydraulic power steering system (EHPS) is an on-demand power steering system that uses a small displacement and high speed electric pump. By optimizing the assist characteristic curve, EHPS can save energy more significantly than traditional hydraulic power steering system. After overview of the energy saving principle for EHPS system, the energy consumption of the EHPS system is elaborated, and the energy loss of the mechanical, electrical, hydraulic subsystems is analyzed. Finally, targeted measures are proposed for energy conservation.