bluuebunny/crossref_metadata_2025 huggingface dataset:
A Study on the Relationship Between China's Energy Consumption and Economic Growth
Authors: Li Juan , Zheng Zu Ting
Published: February 2012

Energy consumption and economic growth are inseparable, along with the constant expansion of the economy, increasing energy consumption in China, a huge energy consumption is greatly beyond the capacity of China's energy supply, while causing serious environmental pollution, the threat of China sustainable economic development. In this paper, China's energy consumption and economic growth analysis of the relationship between research, through error correction model to arrive at energy consumption and economic growth of the long-term equilibrium relationship, and accordingly put forward a sound proposal related to this relationship, for the government to take certain economic reforms was provided.
Experimental Study of Laser Surface Treatment of Low-Carbon Ductile Iron
Authors: Li Yu Zhong , Liu Jing Ping
Published: February 2012

In the essay, the Low carbon ductile iron by laser surface alloying processing has been experimentally studied. Results indicate that on low carbon ductile iron matrix coated with different alloy powder, structure of laser surface alloying processing is very small, the combination quality between alloying layer and matrix is good. Low carbon ductile iron after laser surface treatment, maternal surface hardness are greatly enhanced, maternal surface hardness increasing from HV250~330 to the highest about HV1400, surface laser hardening effect of Low carbon ductile iron is very obvious.
Effective Ways to Realize Green Machining
Authors: Li Teng Fei , Shi Bo Qiang , Fu Xue Jie
Published: February 2012

Since Green Manufacturing has been becoming the future trend of the manufacturing industries, metal cutting companies are being compelled to reduce their impact on the environment as more international and government environmental protection legislation is introduced. As an important component of Green Manufacturing, Green Machining has been proposed as a new conception and agreed by more and more people. To realize Green Machining, some suggestions are given and some effective methods or technologies are briefly introduced in this paper from two perspectives of reducing environmental pollution and saving natural resources. By comparing these technologies, it is found that the hybrid processing technologies, MQL and Water jet machining are relatively easy to implement.
The Influence of Professional Shoe Materials for Aerobics on Bounce Action of Athletes
Authors: Yang Xue Lin
Published: February 2012

Through making experiment, research and summary on three situations of Thomas, Cossack and Bare Foot, as well as the mechanical parameters under the combination of these three situations, the paper concludes the differences of the properties (such as stamping and shock resistance, etc.) among various special shoes for aerobics and different influences on bounce action caused by these various shoes. It plays an instructive significance to the choice of professional aerobic shoes
Carbonation Depth Research of Concrete with Low-Volume Fly Ash
Authors: Huang Chong Hao , Geng Guang Long , Lu Yu Song , Bao Guo , Lin Zhen Rong
Published: February 2012

The use of fly ash is in harmony with the concept of sustainable development. This paper discusses the effect of replacing ratio of fly ash (FA), ambient relative humidity, temperature, curing age and w/c on carbonation of concrete made with low-volume FA. The process was accelerated in artificial carbonation laboratory by controlling 20% concentration of CO2, temperatures from 20°C to 60 °C and 30%-70% relative humidity. The contrastive results show that the carbonation model for predict carbonation depth has a nice performance.
Study on Worst Case Coverage of Mobile Sensors in Hybrid Wireless Sensor Networks
Authors: Wang Xiao Long , Ni Wen Jing , Fang Qian Sheng , Ge Yun Jian
Published: February 2012

Coverage has recently emerged as a premier research topic. This paper addresses the problem of monitoring of targets with hybrid network, which is composed of some static sensors randomly deployed in the sensing area and some mobile sensors deployed in the edge. Probability model is used to find all the maximal breach paths. The nearest mobile nodes to the maximal breach paths will move to the maximal breach path with certain speed, to ensure that the target can be detected within the monitoring area. Algorithm is presented for using mobile nodes to enhance barrier coverage. Simulation confirms the efficiency of our moving strategy.
Optimization Analysis of the Tridimensional Container Terminal Transmission System
Authors: Liang Mei Lian , Wang Jun Li , Zhao Wei Dong
Published: February 2012

Optimization analysis of transmission system simulation models and discussion on the optimal matching of transmission equipments are carried out based on the existing tridimensional rail power driven container terminal transmission system network. Two-dimensional animation display of the transmission system is realized through multiple simulations utilizing simulation software. The simulation analysis indicates the average operating efficiency of the equipments such as quay crane and gantry crane have reached 82 percent. The simulation results have some valuable reference for the actual production and the realization of the tridimensional transmission system.
Study on a Control Method for Trajectory Correction
Authors: Zhang Ke Jia
Published: February 2012

In order to obtain a two-dimension trajectory correction method based on mature and simple technologies, a simple correction method was proposed. On these basis, spin control, lift and static margin control have been evaluated by identify relevant parameters acting on range and deflection. The correction capability that they offer has been compared by means of a six DOF simulation in the case of a 122mm low spin rocket. The calculation results show that this control method is able to realize the function of two-dimension trajectory correction.
The Research of Travelling Crane Non-Destructive Health Monitoring Based on Artificial Incentive and PVDF Sensor
Authors: Wan Zhou , Shang Yuan Yuan , Gao Song , Xiong Xin , Jing Zhong Guo
Published: February 2012

Many factors may lead to internal structure of travelling crane injured when it is working. Therefore, it is an important problem of industry safety to detect the main girder. In this paper, a non-destructive testing method is presented. The white noise on the main girder was generated with artificial incentive. Special PVDF piezoelectric film sensor was used to detect the change of resonant frequency of main girder of traveling crane and the frequency was analyzed to judge the non-destructive health status of the main girder. The experiment results show that traveling crane survey method based on PVDF piezoelectric film sensor has a good accuracy and feasibility.
Simultaneous Process Mean and Variance Monitoring Using Wavelet Transform and Probabilistic Neural Network
Authors: Wu Shao Xiong
Published: February 2012

A real-time WPNN-based model was present for the simultaneous recognition of both mean and variance CCPs. In the modeling of structure for patterns recognition, the combined wavelet transform with probabilistic neural network (WPNN) was proposed. Input data was decomposed by wavelet transform into several detail coefficients and approximations. The approximation obtained and energy of every lever detail coefficients was for the input of PNN. The simulation results shows that it can recognize each pattern of the mean and variance CCPs accurately, which can be used in simultaneous process mean and variance monitoring.
The Hydraulic and Air Pressure System and PLC System for the Button Cell Spreader
Authors: Wang Hong Guang , Huang Yan Qun
Published: February 2012

The glue spreader of lithium manganese button cell is the necessary facility in the button cell industry. In the incipit , design the machinery and describe it simply. The focal point of this article is that design the hydraulic and air pressure system for the glue spreader of lithium manganese button cell and also do some experiments. And also get the relation curve between the rotate speed and the time when solenoid valve is working. At last get the angle of the jet flow. Finally, introduce the control system. It includes control system function of the procedures and so on. And also make the program function diagram to analyse the PLC control system.
Computational Analysis of Low Velocity Impact Response of Composite Panels
Authors: Rahman Mustafizur , Morozov Evgeny V. , Shankar Krishna , Fien Alan
Published: February 2012

The present work deals with the finite element modelling of low velocity impact response of different types of composite panels for body armour application. The response of these composites panels including bonded, unbonded and partially bonded laminates has been simulated using non-linear finite element package LS-DYNA. 2D shell elements in LS-DYNA have been used to represent both resin bonded glass fabric targets and dry woven glass fabric panels. The hemispherical shaped projectile is being modelled with 3D solid elements. The results of the numerical analysis showed that the value of contact force for the fully bonded composites panels was significantly higher than that observed for the panels consisting of dry woven glass fabric. However, the corresponding displacement was substantially lower. The similar simulation of the partially bonded composite panels has shown a reduction of both the contact force and the displacement. In addition, it has been shown that the partially bonded composite panels are capable of absorbing higher levels of energy than the rigid panels.
A Compact Broadband Phase Shifting Network for a Four-Feed Multi-Mode Global Navigation Satellite System Antenna
Authors: Ge Hong Bin , Yao Yuan , Yu Jun Sheng , Chen Xiao Dong
Published: February 2012

A compact feeding network for a wideband circularly polarized multi-mode Global Navigation Satellite System (GNSS) antenna is presented. Four feed method for the antenna is adopted to suppress the higher modes and increase the 3dB axial ratio (AR) bandwidth. A broadband phase shifter with 0°, 90°, 180°, 270° phase differences using composite right/left-handed transmission line structure combined with novel schiffman phase shifter is analyzed, designed, simulated, implemented and measured in this article.
Structure Design and Stress Analysis of Hollow Sucker Rod Joints
Authors: Han Chuan Jun , Zhang Jie , Hu Fang Ting , Li Jun Gang , Zhang Li
Published: February 2012

Owing to the problem of week strength, tripping and bad sealing of the hollow sucker rod joints, we designs a new sucker rod joint, which has two kinds of prototypes, including tapered shoulder and round shoulder. The hollow sucker rod’s characteristic is easy disassembling, multiple sealing, and also has a large contact area of the shoulder. By using the method of finite-element analysis, we set up the finite-element model and analyze the contact stress and deformation distribution of two kinds of structure in different friction coefficients. Through the analysis, we find not only the bearing capacity of the circular arc shoulder joint, but also the sealing is also better than the tapered shoulder's joint. And for both kinds of joints, the friction coefficient is an important factor to affect the pretightening force.
Research on the 3D Modeling of Aviation Gas Turbine Blades Base on Free Surface
Authors: Tang Jie , Wang Li Wen , Wang Tao , Wang Hao
Published: February 2012

In the CAD software, we use the theory of free surface to model the blades of turbine, which makes it faster and effective to achieve surface CAD reconstruction and achieves the inverse modeling of turbine blades. All the works above provide physical model for the study of turbine blades repair technology.
Interaction of Semi-Cylindrical Gap and Multiple Shallow-Buried Cavities and Inclusions
Authors: Li Hong Liang , Sun Dan
Published: February 2012

In mechanical engineering, earthquake engineering and modern municipal construction, It can be found that there are shallow-buried cavity or inclusion structure everywhere. In this paper, Green's Function is studied, which is the solution of displacement field for elastic semi-space with semi-cylindrical gap and multiple shallow-buried cavities and inclusions while bearing anti-plane harmonic line source force at any point. In the complex plane, considering the symmetry of SH-wave scattering, the displacement field aroused by the anti-plane harmonic line source force and the scattering displacement field impacted by semi-cylindrical gap and multiple cylindrical cavities and inclusions are constructed. Through applying the method of multi-polar coordinate system, the equations with unknown coefficients can be obtained by using the stress or displacement condition of the cylindrical cavities and inclusions in the radial direction. According to orthogonality condition for trigonometric function, these equations can be reduced to a series of algebraic equations. By solving these algebraic equations the value of the unknown coefficients can be obtained. So the total wave displacement field could be got. By using the expressions, an example is provided to show the effect of the change of relative location of semi-cylindrical gap, the cylindrical cavities and inclusions and the location of the line source force.
The Exploration of Appropriate Pouring Time which is the Important Parameters in Gray Cast Iron Foundry Process Design
Authors: Peng Xian Ping
Published: February 2012

The determination of pouring time is the important content in the casting process design. Pouring time to determine the design of the casting process is very important content. Appropriate pouring time can avoid many defects such as misrun, cold lap, entrapped slag, distortion, blowhole, swell, cope raise and so on. This paper analyzes the characteristics and shortcomings of determining several kinds of pouring time in current production of gray iron castings. The writer proposed a new calculate formula of pouring time about gray iron casting. By comparing the successful production instances, it is proved that it is good reliability, scientific and suitability.
Mechanical Characteristics of PVA/STMP Hydrogel in Tensile and Unconfined Compression
Authors: Zhu Wei , Gao Jin , Li Xiao Gang , Lin Jun Li , Cao Han Hui , Sun Bai Tian
Published: February 2012

Hydrogels based on Poly(vinyl alcohol) (PVA) were synthesized using the combining method of chemical agent and freezing-thawing cycle. Sodium Trimetaphosphate (STMP) is a kind of crosslinking agent in this reaction. The resulting hydrogels were characterized in terms of tensile properties and compression stress-strain testing. The influences of STMP and water content on mechanical properties of hydrogels were investigated. It is suggested that PVA hydrogel has excellent tensile strength, higher elongation at break and viscoelastic materials’ stress-strain curve. Tensile strength of specimens without STMP increases from 4 to 6.8 MPa, as well as elongation increase from 300% to 458%, respectively. When the strain changes from 10% to 50%, tangent compressive modulus dramatically increases from 0.58 to 9.9 MPa for hydrogels with 80wt % water and 0.41 to 5.4 MPa for 85wt % water. Meanwhile, the addition of STMP can further improve the mechanical properties of PVA hydrogel.
Research and Implementation on Multi-Database System Based on XML
Authors: Wang Dong Xiao , Chen Long Ju , Wu Zhao Lin , Zhang Bao Liang
Published: February 2012

This paper introduces advantages of XML as a data exchange format, and proposes a multi-database system architecture based on XML, a data exchange platform model. We takes full advantage of is the features of XML, including good extensibility and interactivity, to implement the XML-based integration program of heterogeneous databases, making all kinds of data described in a unified XML format. And we describe the actual workflow of the system in this model and theoretically analyze the implementation details of its core modules. Finally, the workflow and the multi-database work mode for users to access databases in the system model based on XML are presented.
Genetic Algorithm Design and Simulation for Job-Shop Scheduling Problem
Authors: Wang Gui Cong , Tian Xi Jie , Li Chuan Peng , Yang Na Na
Published: February 2012

This paper proposes an effective genetic algorithm for the job-shop scheduling problem (JSP) to minimize makespan time. An effective chromosome representation based on real coding is used to conveniently represent a solution of the JSP, and different strategies for selection, crossover and mutation are adopted. Simulation experimental results have shown that the scheduling model using the algorithm can allocate jobs efficiently and effectively.
Technique Influence on Cast-Iron Surface Textures Induced by LST
Authors: Dai Jin Yue , Zhang Yan Hu , Hua Xi Jun , Fu Yong Hong
Published: February 2012

The influence of various technological parameters on laser-textured cast-iron surface is presented in this paper. A kind of micro-pits array was analyzed using single-factor method, where Nd3+: YAG solid laser is applied to obtained regular surface textures, and 3D surface morphology profiler used to compare the surface topographies related to technology. Among of the set of parameters, the distance between working surface and cavity mirror, pumping current and number of pulses were concerned variables in the process of manufacturing of microstructures. The geometry structures for variables were characterized by the radius and depth of micro-pits. Moreover, surface roughness for different technological parameter were expressed with Ra, Rq and Rt. Abbott curve was adopted for valuing the abrasion resistance of given textured surfaces. One optical range of parameters is achieved for improving the level of laser texturing surface.
Design of the Heating Regulation Controller Based on ARM
Authors: Meng Qing Jie , Liu Yi Qian
Published: February 2012

According to the shortage of the central heating system control equipment, design the heating regulation controller based on the embedded Linux operating system with the 32-bit processor S3C2440 as core. The system determine the second supply water temperature of heating network by measuring the outdoor temperature, and adjust heating temperature by the electric valve opening. This system has advantages of high sensitivity, good anti-interference abilityand good real-time performance, and good energy-saving effects.
Improved GA Based Multi-LAVs’ Aerial Delivery Areas-Choosing Method
Authors: Li Da Lin , Li Jie , Guan Zhen Yu , Wang Jun Bo
Published: February 2012

In this paper, a multi-LAVs’ aerial delivery areas-choosing method is brought forward, which aims at known targets which are located in a fixed area. This method takes the performance of LAV, especially minimum turning radius, into consideration, and incorporates AHP and Dubins’ path. Based on the discussion of general GA method, we design the IGA method to increase the convergence rate. By using this method, the LAVs can reach the target located at the longest distance within the minimum time. Simulation results show that the IGA method has a higher convergence rate than the general GA method, while the delivery areas can be chosen in an optimized way. The proposed method can be extended to the problem of multi-Dubins vehicles’ task assignment and path planning.
Automobile Active Suspension System Optimization Design Based on Modified Multi-Objective Genetic Algorithm
Authors: Zhang Yi , Lu Chao , Zhang Hu
Published: February 2012

A dynamic model of automobile active suspension system is established, based on which a high dimension objective model for active suspension system is set up. And through linear combinations, high dimension multi-objective function is translated into a low dimension objective function. The modified NSGAII with single point compound crossover has been adopted to realize the optimization. In the paper, the performance active suspension system can realize integrated optimization. The results show that this way can effectively enhance effect of the automobile active suspension system.
Long Term Voltage Stability Enhancement by Model Predictive Control
Authors: Yu Pei Jia , Jiang Ting Ting , Zhang Jing
Published: February 2012

Power system load shedding has been used as an emergency control method to prevent possible power system instability problems. In this paper, a model predictive control based load shedding scheme is proposed to enhance long term voltage stability of a power system. The main advantage of this method is the capability to handle control actions with proper time instant. A new cost function is defined for the model predictive control scheme. The proposed scheme is tested on the New England 39-bus system to validate its efficiency and effectiveness in preventing system long term voltage stability problems.
Serial Communication of PC and SCM in Distributed Control System
Authors: Cao Lian Min , Zeng Qing Liang , Xiao Xing Yuan , Zhang Xin
Published: February 2012

The application of MSComm widget has achieved serial communication of personal computer and sing-chip micyoco in distributed control system. This communication method has the characteristics of low cost, simple hardware connecting and software designing and convenient operation. It can fulfil the need of serial communication. The serial communication has some valuable reference for monitoring and control system in industry and data collection system.
Optimal Structural Frequency Design of Stiffened Shell
Authors: Mi Da Hai , Yang Rui , Zhou Liang , Liu Yang , Guo Dong Ming
Published: February 2012

Frequency-aimed optimal structural design of stiffened shell is concerned. It is a reverse design problem for the first several modal frequencies to converge to a set of target value. A design method combined modified bi-directional evolutionary structural optimization (BESO) and size optimization is presented. Optimization model consists of skin and regular grid frame structure. To solve irregular branches and holes that often exist in ordinary topology optimization results, instead of elements, the existence states of ribs in the frame are used as design variables and sensitivity of the rib is discussed. Detailed design is conducted by size optimization. Example shows that frequency requirements are achieved. And the optimum structure is regular and clear, the localized modes problem is avoid. This is very suitable for designing airplane wind tunnel flutter test models.
Maximization of Productivity by Distributed Robot System for Manufacturing Operation
Authors: Matsuda Keishi , Ishihara Hidenori
Published: February 2012

These days, research of multiple robots, which has distributed function and maximize their total ability have been frequently observed in the field of rescue robots or soccer robots tournament called ROBOCUP. This shows the rapidly growing need of more sophisticated multiple robots which are more dependable compared to function-integrated single robots. Accordingly, several studies have been made regarding sharing and distribution the knowledge which are obtained from the sensory operation. This knowledge must be utilized not only for geographical navigation but for highly complicated exercises. Asama et al. proposed the Intelligent Data Carrier (IDC) with the aim of sharing knowledge among the robots. This utilization of memory media has disadvantage of an increase in cost and redundant need of supervising system for the memory modules. Therefore, in this paper we propose the knowledge sharing system and autonomous line control system using the broad band wireless communication devices, such as wireless LAN and BluetoothR. If the robot modules are equipped with the independent communication systems, efficient and simplified unitary system shall become the practical use. This enables the robot to manage the knowledge interactively.
Design of a New Suspension Mechanism of Temporarily Installed Suspended Access Equipment
Authors: Zheng Xi Jian , Gao Xing Liang , Zhao Xiang Yun
Published: February 2012

This paper introduces the design of suspension mechanism of a large load and big span Temporarily Installed Suspended Access Equipment (TISAE), and acquires the expression of each of component and the wire rope based on the typical equation of force method. Setting up the mathematical optimization model and writing a program search for the optimal positions of installing wire rope. Based on ANSYS analyze the general suspension organization structure and the new suspension organization. The new suspension mechanism may take larger work load.
Demerit-GWMA Control Chart with Fast Initial Response
Authors: Kang Hae Woon , Baik Jae Won , Choi Young Jae , Nam Sung Ho
Published: February 2012

Complex Products may present more than one type of defects and these defects are not always of equal severity. These defects are classified according to their seriousness and effect on product quality and performance. Demerit systems are very effective systems to monitoring the different types of defects. So, classical demerit control chart used to monitor counts of several different types of defects simultaneously in complex products. Recently, H.W. Kang et al.[7] introduced Demerit-GWMA(generally weighted moving average) and Demerit-EWMA control charts that can detect small shifts of the process mean more sensitively than the classical demerit control charts. In this paper, we present an effective method for process control using the Demerit-GWMA statistics with fast initial response. Moreover, we evaluate exact performance of the Demerit-GWMA control chart with fast initial response(FIR), Demerit-GWMA and Demerit-EWMA according to changing sample size or parameters.
Finite Element Analysis for the Body Frame of Open-Front Press
Authors: Pan Hai Peng , Feng Hao
Published: February 2012

Open-front press is one of the dominating equipment for punch forming. Body frame is the primary loadbearing part of this machine, and its rigidity and intensity have great influence on the working performance. In order to optimize the structure of body frame and shorten the product development cycle, finite element analysis, which is an effective technique in CAE, is used to investigate the body frame’s deformation and stress distribution in the presented work. By taking JC21-160, a representative type of open-front press, as the analysis object, the whole procedures of this work, such as modeling, meshing, loading, constraint handling and the solving, have been discussed explicitly. The analytical method and result will conduce to improve the structure design of this kind of machine and the similar devices.
A Study on Fatigue Test for Cardiovascular Stent
Authors: Ma Zong Min , Dong He Yan , Qi Min
Published: February 2012

Fatigue durability is an important attributes of cardiovascular stent. This paper develops a stent fatigue test instrument. And then a fatigue test for cardiovascular stent is carried out successfully with this stent fatigue test instrument. The test result shows that the stents tested still maintain integrity after 400 mio fatigue cycles --corresponding to about 10 years. This paper can provide the guidance for the stent design.
Modeling and Modal Analysis of Tool Holder-Spindle Assembly on CNC Milling Machine Using FEA
Authors: Wang Jun , Wu Bo , Hu You Min , Wang Er Hua , Cheng Yao
Published: February 2012

In machine dynamics the modal analysis of tool holder-spindle assembly is carried out to verify the reasonability of spindle speed, recognize the impaction of vibration modes on machining accuracy and optimize the design of spindle. This paper presents modeling and modal analysis of tool holder-spindle assembly utilizing FEA. Bearing supports is simulated by four uniformly distributed translational spring-damper elements and the radial stiffness of bearings is calculated based on Hertz contact theory. The connection at the tool holder-spindle interface is assumed to be the rigid-connection. This study also proposes two numerical methods in the finite element analysis software ANSYS to simulate the rigid-connection. Consequently, the present modeling and analysis approach by use of FEA is feasible for analyzing tool holder-spindle assembly dynamics.
Structural Analysis and Optimization Design of the Frame of YC460LC-8 Excavator
Authors: Shi Guang Lin , Wu Kun , Zhu Lin
Published: February 2012

This paper based on a settled type of structure concerning hydraulic excavator rotary platform as the research object, use the method of finite element analysis to build the finite element model in the conditions of three typicals of representative working condition about this rotary platform. By the analysis concerning the strength and stiffness of this platform structure based on the builded model, the weak link about this structure can be find out by us. Finally , according to the optimization structure design about this device, the maximum combined stress related to the easy fatigue failure area in all working condition could be significantly reduced from 162.93MPa to 115.05MPa, decrease by 29.4 percent. Thus, the structure performance could be greatly improved on the premise of guarantee the weight of construction.
Rapid Assessment of Surface Color of Chinese Fir and Eucalyptus Wood by near Infrared Spectroscopy
Authors: Yang Zhong , Liu Ya Na , Lv Bin
Published: February 2012

Chinese fir and eucalyptus are the important plantation wood species in China. Wood color is a property that can reflect aesthetic features of wood and increase the perceived quality of wood. The color parameters of the two woods and the ability of near infrared (NIR) spectroscopy to assess the color parameters were investigated in this study. The results shown the L*, a* and b* values of Chinese fir were 51.91~73.33, 6.26~12.94 and 20.36~32.04 and that of eucalyptus were 42.30~62.44, 8.48~62.44 and 15.07~25.15 respectively. The excellent related coefficients (r) and lower square error of calibration (SEC) illustrated NIR spectroscopy coupled with multivariate data analysis has ability to rapidly predict the L*, a* and b* values of the two wood species. The use of reduced spectral range has little effect on the quality of PLS models allowing the use of inexpensive and portable spectrometers with lower wavelength region to rapidly assess wood surface color.
The Effects of Top Management Support on Information System Success: Manufacturing Industry Cases
Authors: Chen Xiao Chun , Zhao Zhao , Wang Yun Feng
Published: February 2012

Top management support (TMS) is one of critical success factors of information systems. However, prior research had no agreement on the contents, forms and roles of TMS. Especially, studies conducted in Chinese manufacturing industry context were scarce. This paper constructed a model to describe the effects of TMS on information systems success and the reactions. Following multi-case study approach, it collected the qualitative data from eleven manufacturing enterprises, and nine of which were got together through interviewing the CIOs. As result, the conceptual model was supported. The findings have significant meanings for practice.
Study of Ambiguities of English-Chinese Machine Translation
Authors: Suo Juan Juan , Yu Bao Ying , He Yue Juan , Zang Guang Ya
Published: February 2012

Ambiguities is one of the biggest obstacles of English-Chinese machine translation. In order to make the disambiguation more easily and effectively, the reasons of ambiguities why the quality of machine translation is very low from the perspective of linguistics were analyzed. And then some measures of disambiguation were proposed. This study has significance for the development of English-Chinese machine translation.
Maximizing the Lifetime of Sliding Wireless Sensors in Barrier Coverage
Authors: Yang Tao , Fan Pan Guo , Mu De Jun
Published: February 2012

Wireless sensor network is always deployed in specific area for intrusion detection and environmental monitoring. The sensor nodes suffer mostly from their limited battery capacity.Maximizing the lifetime of the entire networks is mainly necessary considered in the design. Sliding the sensors in different barriers under the optimal barrier construction is a good solution for both maximizing network lifetime and providing predetermined coverage ratio. The simulation results demonstrate that the scheme can effectively reduce the energy consumption of the wireless sensor network and increase the network lifetime.
Visual Calculation and Analysis System of Automotive Active Safety
Authors: Wang Bin , Guo Xue Xun , Zhang Wei , Yang Bo , Zhang Jie
Published: February 2012

Considering the importance of vehicle active safety system, this article designs the manageable man-machine interactive software that can help engineers to design the vehicle active safety system. Engineers can interact with the software and involve in most processes of active safety system design through the visual software. And the software can improve design efficiency, shorten the design cycle, and reduce design costs. Through the successful development of the software, the paper shows the important role VC++ plays in vehicle active safety system design and this will be instructive.
Research on Pressure Characteristics of Vehicle Air Braking System with Leakage from Pipeline
Authors: Wang Zhi Shen , Li Gang Yan , Wu Qi Qiao , Xu Jun
Published: February 2012

Based on the vehicle air braking system circuit analysis, a pressure characteristics model in the states of normalcy and leakage was built, and the relationship between brake pressure characteristics and leakage was studied. Based on the modeling and study, simulation was done using the MATLAB; On the other hand, experimental setup of vehicle air braking system was designed, and the experiments were carried. Then the simulation results were compared with experimental results. By comparison and analysis, we come to a conclusion that the model in this paper can accurately describe the pressure characteristics of vehicle air braking system.
Investigation on Simulation of Train Loading on Prestressed Concrete Sleepers
Authors: Salim M. R. , Bakar A. Abu , Shariff A. A.
Published: February 2012

Railway concrete sleepers have been developed and utilized in railway industry for over 50 years. Cyclic loading because of vibration on sleepers due to the train loading and the velocity of train itself and also a small percentage of bad wheels, can eventually lead to a crack network and failure of component. The objective of this study is to investigate the load carrying capacity of the selected prestressed concrete sleepers – prepared for Keretapi Tanah Melayu Berhad, KTMB, under static and dynamic loading conditions. In order to determine the behavior of the railway concrete sleepers under repeated low-velocity impact load and to study the fatigue performance of railway concrete sleepers, the research efforts are required to perform comprehensive studies on the behaviors and dynamic response of these prestressed concrete sleepers. The fatigue performance of railway sleepers was investigated under constant amplitude load and compared with the actual train loading on site. For the laboratory work, the concrete sleepers were subjected to repeated low-velocity sinusoidal loads typical to loading from commuter trains only and attaining the fatigue toughness, energy absorption, and crack formations of the concrete sleepers.
Ultrasonic TOFD Method for near Surface Defect Detection Using Longitudinal Secondary Wave
Authors: Lu Chao , Chen Guo , Wang Xin
Published: February 2012

Aim at the problem of near surface blind area in ultrasonic TOFD technique, a new testing mode combined to ultrasound time of flight diffraction-reflection(TOFDR) and the three-fold reflected(TOFDW) based on secondary longitudinal waves was put forward. Through analysis the transmission characteristics of TOFDR and TOFDW, the two modes of the detection principle were illustrated, and discussed the ability in near surface detection of the two methods. Finally through the detecting artificial defects detection, the signal and image characteristics and detection sensitivity under the modified detection mode were studied. The artificial defect with buried depth of 1mm can be effectively detected from the D-scan image by the combined TOFDR and TOFDW methods.
Research on Aluminum Plate Reversible Hot-Rolling Mathematical Model and Schedule
Authors: Wang Hai Xiong , Li Ji Bin , Liu Hai Jun , Wang Chang Sheng
Published: February 2012

In order to carry out automatic transformation to the two-roll reversible hot-rolling mill of a aluminum plate production factory, firstly a series of mathematical models of aluminum plate hot-rolling parameters are established, then a new optimization algorithm which is suitable for aluminum plate rolling production combined with the various constraints in the rolling process is proposed, and rolling schedule optimization software system is developed. Finally, by measuring the process parameters in rolling production site and applying the optimized rolling schedule to the rolling production, many test data are obtained. The analysis of test results and evaluation of the practical production show that the mathematical models established have high accuracy compared with the old rolling schedule. The optimization schedule can not only ensure the production quality, but also has higher efficiency and less energy consumption.
A Program Designed for the High-Speed Gearbox Test-Bed Based on LabVIEW
Authors: Wang Feng Tao , He Liang , Wu Dong
Published: February 2012

According to the test-bed requirements and structural characteristics of gearbox ,this system for high-speed gearbox is designed based on LabVIEW. Firstly, programming mode and structure of the application program is introduced, secondly, data acquisition, bus technology of instrument control is presented. At last, the key technology of the program design is also expounded.
Adaptive Resource Management for Cyber-Physical Systems
Authors: Yan He Hua , Wan Jia Fu , Suo Hui
Published: February 2012

Cyber-physical systems (CPSs) perfectly integrate computing with physical processes, and the emergence of CPSs has attracted significant interest in recent years. In order to fully utilize system resource and improve quality of service (QoS), the innovative resource management method for CPSs is essential. According to a representative case of CPSs (e. g., unmanned vehicle with wireless sensor network navigation), we propose a hierarchical architecture for CPSs, and further establish a system performance optimization model with resource constraints. The particle swarm optimization (PSO) algorithm is applied to solve the considered constraint model. The simulation experiment results verify the efficiency of PSO algorithm, and some instructive proposals for promoting QoS are also outlined.
Robust Optimal Sliding Mode Control for Attitude Synchronization of Autonomous Docking to a Tumbling Target
Authors: Lu Wei , Geng Yun Hai , Shan Xiao Wei
Published: February 2012

This paper investigates the control problem of attitude synchronization for an on-orbit servicing spacecraft autonomously docking to a freely tumbling target in space. An optimal sliding surface is designed based on optimal control theory, followed by a robust optimal sliding mode control law designed for attitude synchronization in accordance. Meanwhile, the unknown but bounded external disturbances, parameter variations, model uncertainties, and measurement errors are all considered during the control algorithm design. The salient feature of this control law is that the relative attitude variables will converge to the origin in the sense of optimality with respect to a quadratic cost function once the sliding surface is reached. The simulation results validate the effectiveness and robustness of the designed robust optimal sliding mode control law.
Indoor Ultrasonic 3D Seamless Location and Wireless Communication of Metal Can
Authors: Chen Xian Zhong , Li Ran Ran , Hou Qing Wen
Published: February 2012

A system with low-cost, low power consumption and wide range of ultrasonic positioning was designed. The node layout is the ultrasonic transmitter vertically installed on the top of the metal can as unknown node, the ultrasonic receivers as beacon nodes, 4 nodes installed on the ceiling and 4 nodes installed on the floor fixed position to receive ultrasonic. Ultrasonic sensor was designed with low power consumption microcontroller Ti MSP430F1611 and RF transceiver chip CC2420. Effective range is 10m, accuracy ± 2cm, launch angle , the system power 200 ~ 400uA/MIPS, 5V lithium battery-powered, Zigbee wireless communication protocol for data transmission. A new algorithm of node location module and Matlab software simulation result were established to achieve 3D seamless positioning of metal can in 20m*2m*2m indoor space.
Effects of Bending Cyclic Load on Mechanical Properties of 2D Carbon Cloth Laminated C/C Composites
Authors: Yang Xi , Li He Jun , Yu Kua Hai
Published: February 2012

Bending cyclic fatigue tests of 2D laminated C/C composites were conducted under load control at a sinusoidal frequency of 10 Hz. And three-point bending tests of fatigued specimens with various cycles were conducted at room temperature to evaluate the effects of cyclic load on mechanical properties. 2D C/C specimens were prepared by an isothermal chemical vapor deposition (CVD) process. The mechanical properties of composites were improved after cyclic loading at most the flexural strength by about 46% and the modulus 38%. The results show that the flexural properties of C/C composites were enhanced with the increase in fatigue cycles. It is suggested that the weakened interface between matrix and fibers by cyclic load play important roles in enhancing the property of C/C composites.
Study on Over-Complete Dictionaries for Sparse Representations of Signals
Authors: Gao Guang Chun , Xiong Kai , Shang Li Na , Zhao Sheng Ying , Zhang Cui
Published: February 2012

In recent years there has been a growing interest in the study of sparse representation of signals. The redundancy of over-complete dictionary can make it effectively capture the characteristics of the signals. Using an over-complete dictionary that contains prototype signal-atoms, signals are described as linear combinations of a few of these atoms. Applications that use sparse representation are many and include compression, regularization in inverse problems, Compressed Sensing (CS), and more. Recent activities in this field concentrate mainly on the study of sparse decomposition algorithm and dictionary design algorithm. In this paper, we discuss the advantages of sparse dictionaries, and present the implicit dictionaries for signal sparse presents. The overcomplete dictionaries which combined the different orthonormal transform bases can be used for the compressed sensing. Experimental results demonstrate the effectivity for sparse presents of signals.
The Research of the Asynchronous Motor Vector Control Arithmetic
Authors: Gao Fang , Wei Li
Published: February 2012

This paper is based on analysis of mathematical model of the induction motor and the basis of the asynchronous motor vector control principle puts forward a torque of inner closed-loop speed, flux vector control system of induction motors. Using Matlab/Simulink construct simulation model and the simulation results are analyzed.
Friction and Wear Analysis of Grease-Lubricated Ball Bearing Based on EHL Numerical Calculation
Authors: Peng Chao Lin , Xie Xiao Peng , Chen Shu Lin
Published: February 2012

Through the numerical calculation on elasto-hydrodynamic lubrication of grease lubricated ball bearing it’s obtained that: for the outer ring fixed, inner ring rotating with the shaft ball bearing type, as a result of the relative speed of steel ball-inner ring friction pairs is faster than the steel ball-outer ring, the film pressure peak and average film pressure on steel ball-inner ring friction pairs is greater than those of steel ball-outer ring, therefore, inner ring surface compared with outer ring is more likely to appearance wear and fatigue failure; In the process of steel ball rotation, there’s a rotation torque which caused by the asymmetry distribution of film pressure generated, and this rotation torque accelerates the rotation speed of steel ball.
The Design of Intelligence Pipeline Leakage Detector
Authors: Liu Yi Qian , Meng Qing Jie
Published: February 2012

The Design of intelligence pipeline leakage detector is nondestructive inspection using leakage detection principle to the internal metal defects, corrosion of pipeline.The detector adopts discrete sampling, realizing 12-bits high-speed multichannel-data collection through the FPGA, amount of the data can be up to 1024 road; and store mass data through ARM at the same time, shared data will be uploaded to the computer of control center through the network, the intelligent data analysis system engineering real-time analysis and quantitative identification, judge pipeline safety operation, provides the basis for safe duty time and maintenance cycle.
Design of Cement Mixer Body Based on the Pro/E
Authors: Zhang Guang Guo , Chang Zhi Bin , Jiang Wei , Zhang Lei
Published: February 2012

This design can shorten the mixer tank’s designing cycle, and reduce production cost. Through the research of logarithm spiral curve, a related calculation equation is derived, and by using the approximate calculation method of numerical simulation, every spiral leaf busbar’s spiral Angle is achived. Using Pro/E curve and surface of the software design functions, calculating according to the design, the spiral leaf 3 d modeling and design of the tanks are completed. The experiment shows this tanks completely meet the demands, discharging residual rate index is up to the national standard.
The Dynamics Analysis on a Type Palletizing Robot
Authors: Lv Mei Yu , Li Jin Quan , Duan Bing Lei , Fu Rong
Published: February 2012

For a palletizing robot, based on analysis of structural and force,taking the theory of D'Alembert to transform the instantaneous inertial force system into a static system and the Kineto-static mathematical model for the robots is established through the method of Kineto-static. At last, via solving the Kineto-static mathematical model by use of the Matlab，the model is verified by calculating and analysing an example. This model is applicable to dynamic analysis on the robots with similar configuration and the results based on the parameter variation is also applicable to this kind of robot’s design, checking, and kinetic control.
Modeling and Hovering Control of an Ducted-Fan UAV in Low Speed Crosswind
Authors: An Hong Lei , Wang Jian Wen , Wang Jian , Ma Hong Xu
Published: February 2012

National University of Defense Technology has begun a research program to investigate and test ducted-fan propeller architecture for UAV designing. Development of a prototype continues to support ongoing research in the area of autonomous systems. In this paper, we build a nonlinear dynamic model of Ducted-Fan UAV for verifying appropriate controller behavior, and design a hierarchical controller for hovering flight of the UAV.
Effective PID Parameters Self-Tuning Rule Based on Internal Model Control
Authors: Liu Yang , Wang Qin Ruo
Published: February 2012

The methods of self-tuning PID parameters are widely used in industry process control. This paper elaborated the principle and design of internal model control, and it is used for PID parameters self-tuning. By simulation, for a time-delay inertial system, the step response curses are obtained with different methods of self-tuning PID parameters. Compared and analyzed the curses, it shows that the present method of self-tuning IMC-PID parameters has a good performance in the time-delay inertial system. It has great potential for practical applications.