bluuebunny/crossref_metadata_2025 huggingface dataset:
Theory Design Research and the Application Prospect of the Future for the Ever Moving Car
Authors: Cao Guo Qiang , Li Yuan Ji , Liu Jiang Ning
Published: October 2013

Using faraday electromagnetic induction principle will car each wheel as a generator. For car generates its own energy recovery; In the front of car set up a blade, It can recovery the wind power what automobile driving produced, For wind power generation, So that it can recover the energy maximum for the car itself. Because of the two kinds of energy all are car generates its own energy, so it can not recovery completely, in addition to there is power loss in the other part of the car, So it needs to the energy loss and power loss for supplement, I choose the solar energy used as supplementary energy that finally achieve the purpose of "ever moving".
Dynamics Simulation and Fatigue Life Study of the Drive System of Rack and Pinion Climbing Vertical Shiplift
Authors: Sun Xiao Qing , Zhang Yang , Shi Duan Wei
Published: October 2013

A combination method of virtual simulation techniques was proposed for fatigue life of vertical shiplifts big modulus gear. A Three-dimensional assembly model of rack and pinion mechanism was established by SolidWorks and its plug GearTrax, then dynamics simulation was conducted based on ADAMS, the relative error between simulation results and static load was 2.2%, indicating the accuracy of the simulation. Bending stress of the big modulus gear was analysed by ANSYS, the error was 1.6% compared with the theoretical value. Using the obtained load history data and bending stress results, the big modulus gears fatigue life was predicted based on nominal stress method, the result showed that the big modulus gear could well meet the design requirements.
Rotor/Stator Interactions Study under Different Operating Condition in Axial Flow Pump
Authors: Shi Wei Dong , Wu Su Qing , Yao Jie
Published: October 2013

Rotor/Stator interaction in axial-flow pump is the main reason for pressure fluctuates, which impacts on operating security of axial flow pump. In order to study Rotor/Stator interaction phenomenon in axial flow pump, TJ04-ZL-02 hydraulic axial flow pump model is investigated under different operating condition by unsteady simulation based on k-ω turbulence model. Numerical results show that: different flow operating conditions will lead to different Rotor/Stator interaction phenomenon, and also different pressure fluctuation. Fluctuation amplitude in design operating condition is smaller than off design operating condition. So the study proves that pump running in the design operating conditions has important beneficial to the pump operational stability.
Study on the Maximum Contact Stress of Involute Gear Pair with a Small Number of Teeth
Authors: Liu Yan Feng , Sun Yue Hai , Sun Qiang , Xiao Jing
Published: October 2013

As the traditional calculation formula for contact strength of involute gear pair is not applicable for the calculation of those with small number of the teeth, some researches on the calculation of contact strength of involute gear pairs have been done. The calculation of the contact ratio of involute gear pair with a small number of teeth can confirm that its end face engagement must be of single-tooth mesh, while the research on the actual contacting lines in the meshing zone can find out the precalculated position, computational formula, and strength condition of the maximum contact stress according with the gear pairs with a small number of teeth.
Based on CFX Numerical Simulation of Francis Turbine Runner
Authors: He Fang
Published: October 2013

This paper presents a vibration prediction method for Francis turbine: Provided with advanced CFX software, Numerical simulation of movable guide vane and Turbine runner’s internal flow state. From the source of hydraulic vibration, Focus on numerical analysis, numerical simulation for the cutting thickness of the runner blade. After analysis of the influence of the blade of hydraulic vibration. To explore new ways for the hydro turbine control hydraulic vibration.
Numerical Simulation of Influence of Different Heat Source Models on Temperature Field of Aluminum-Alloy Ring Weld Seam
Authors: Zhu Wen Feng , Wang Jie , Lin Pei Jian , Zhang Bing Yang
Published: October 2013

Ring-seam joint pipe is more and more widely used in advanced auto-body assembly. However, Aluminums higher conductivity, higher convection coefficient, oxidability and low plasticity in high temperature compared to convectional low carbon steel make its welding numerical simulation much more difficult. Thermal simulation is the fundamental of aluminums coupled calculations of thermo-elasto-plastic for welding. In this paper, a pipe joint of ring seam for ZL114 aluminum alloy is numerically modeled based on birth-death element method and moving-heat-source function loading method. The simulation results agree well with the experiments, which shows that the double ellipsoid heat source model is most suitable for MIG welding simulation of aluminum alloy.
An Optiming Process Design for Sinking with the Thin-Wall Cylindrical Cup
Authors: Teng Hong Chun , Teng Bing Yan
Published: October 2013

The sinking process with thin-walled cylindrical is a new method, which will be used to produce complicated automobile parts. However, in the process of cylinder sinking, there are some defects: wrinkling at the end, compressive instability on the cylinder wall and buckling at the top. These defects are affected by the forming parameters such as material properties, the friction coefficientμ, the die semi-cone angle α, the reduction ratio Rf/R0 .This paper has analyzed the influence of aforementioned parameters on the sinking process design, and a new method, multi-step sinking process, is presented. And optimizing the process design by using the theoretical analysis and FEM respectively, a more practical process scheme is gained through FEM, which has less steps, which could shorten the process-developed cycle, raise the productive efficiency and decrease the production cost.
Ontology-Based Knowledge Modeling for Power Source Subsystem of Satellite Fault Diagnosis
Authors: Li Xiang Qian , Jing Shi Kai , Yang Hai Cheng , Zhou Jing Tao
Published: October 2013

The power source subsystem of satellite is the basic guarantee of the normal orbit for the satellite that provides to energy for the entire satellite. The fault knowledge modeling method for power source subsystem of satellite based on ontology was proposed. Firstly, the failure modes and effects analysis (FMEA) of the power source subsystem of satellite was analyzed, and the fault knowledge was got by extracting key words. Secondly, the ontology of fault knowledge was established. Thirdly, the inference engine based on ontology was realized by analyzing the hierarchical structure of the reasoning system. Only the ontology needs to be created for the fault diagnosis system, which greatly reduces the knowledge creation time.
The Calculation for Digging-Resistance of Small-Scale Excavator Based on Torque Method
Authors: He Ji Lin , Zheng Hai Hua , Li Dong
Published: October 2013

The torque-based calculation model for digging-resistance of small-scale hydraulic excavator is presented. The simulation model of digging-resistance is built under AMESim environment, and the structural parameters of SWE50 excavator are imported into AMESim and the digging operation is simulated. The parameters gained from the simulation are imported into calculation model, then the correlation between calculation results and simulation results of digging-resistance is obtained, which shows that this calculation model can indicate effectively the dynamic process of resistance during digging operation and is better than the empirical formula. At last the digging-resistance experiment is operated and the actual resistance is calculated by use of experimental data. The calculation model is proved suitable further for analysis and application of the actual digging-resistance.
Research on the Dynamics of the Double Helical Gear Transmission
Authors: Ren Fei , Qin Da Tong , Wu Xiao Ling
Published: October 2013

Against the transmission characteristics of the double helical gear pair, considering the time-varying mesh stiffness, the bearing radial and axial stiffness, the tensile and compressive stiffness of the transmission shaft, the bending stiffness of that, error excitations, and corresponding dampings, a double helical gear pair bending-torsion-axis coupling dynamic model was established by using the lumped parameter method based on the gear meshing theory and Lagrange equations. Based on the model, the dynamic response of double helical gear pair was solved, and taking the right side of helical gear as an example, the frequency spectrum characteristics of dynamic meshing force of the right side of helical gear were mainly analyzed. This research establishes the foundation for dynamic performance optimizations and reliability designs of the double helical gear pair transmission system in the future.
Application of LABVIEW in the Experiments of Temperature Acquisition
Authors: Long Jing , Zhang Chun Liang
Published: October 2013

In the long run, the problem of high temperature has been existed in a companys injection molding machine controller. CFD software ICEPAK is used in the report to make a numerical simulation as well as a simulation analysis of the injection molding machine controller and get the temperature contours picture, and then LABVIEW software is used to measure temperature variation with making program. The results show that: it confirmed the correctness of the simulation of software ICEPAK under the allowed error, it also confirmed that the cooling effect of the products of the company is not very good, furthermore it provided the foundation for the company to improve product. The attempt of applying ICEPAK Software and LABVIEW in the electronic equipment to optimize design is made.
Simulation Research of Five-Bar Pneumatic Clamping Mechanism
Authors: Wu Ying , Zhou Xu
Published: October 2013

For being convenient for researching the force transmission characteristic and the improvement and use of five-bar pneumatic clamping mechanism, for improving the dynamic work efficiency, for reducing energy consumption, the three-dimensional solid model of the mechanism was established with ADAMS. Each part of the model in ADAMS was set up. Simulation analysis on the working process of the mechanism was achieved. The structure optimization parameters of the mechanism were obtained. The result proves that the vertical location of revolute joint of pneumatic rotary actuator and rocker, the locations of revolute joint of pneumatic rotary actuator and frame have less impact on the maximum driving force of pneumatic rotary actuator. The horizontal location of pneumatic rotary actuator and rocker, the locations of revolute joint of rocker and frame, the locations of revolute joint of link and block have greater impact on the maximum driving force of pneumatic rotary actuator.
Spindle System Dynamic Characteristics Analysis of Vertical Gantry Machining Center
Authors: Huang Hong Bing , Wang Yong Ming , Xia Shuai
Published: October 2013

With the spindle system of a vertical gantry machining center as the research object, based on the vibration theory and finite element method, the modal analysis of spindle system is studied. Firstly, the finite element models of the mandrel box body and motorized spindle frame of spindle system are established by ANSYS. And then do the modal analysis of singleton in the boundary of free constraint. Lastly, based on the analysis results to establish the finite element model of the whole spindle system and do the modal analysis of the whole system which under constraint condition. The result shows that the swing of motorized spindle frame and motorized spindle sleeve of spindle system are more obvious.
Research of Line Contact Rotate-Milling about Space Ruled Surface
Authors: Zheng De Xing , Wang Bin
Published: October 2013

For there are small contact area between tool and workpiece, low machining precision, and poor quality of face in point-milling, point-milling and line contact milling used in processing are analyzed on this paper. Line contact rotate-milling using which the workpiece is processed as the profile laws is shown, the realization method of line contact rotate-milling is discussed in milling various surfaces, the movement to processing the various surfaces is studied, and the movement function is analyzed. Next, the factors affecting the machining accuracy are analyzed, and the main factors - the geometric errors are analyzed and integrated. Then the error model is created in differential analysis,the output accuracy is analyzed in Matlab. To point-milling, the line contact rotate-milling is the method of processing based on face. In this processing, the way of no profile theory-error is taken, the tool contact length with the workpiece is increased, axis as few as possible and even single-axis is taken, and the accuracy of processing is improved.
The Design of Torsional Fatigue Life Test of Vehicle Steering Driveshaft
Authors: Bao Wu
Published: October 2013

The torsion fatigue life test which aimed at the automotive steering shaft designs the test bed of micro-controller based on PIC16F877 and makes the accurate test methods possible. The installation of a torque sensor in series with the magnetic particle brake can detect feedback on the test load. A serial port communication between micro-controller and programmable power supply can automatically adjust the output of current size of programmable power supply, and make torsional load output by the magnetic particle brake constant. The system is not only accurate in statistics testing and capable of memorizing the number of tests but also low cost and of practical value.
Numerical Simulation for Solid-Liquid Two-Phase Flow in Stirred Vanadium Leaching Tank
Authors: Kong Jian Yi , Wu Zong Wu , Hou Yu , Wang Xing Dong
Published: October 2013

The flow field in the leaching tank for the vanadium extraction in the stone coal was simulated by the Computational Fluid Dynamics (CFD) software. The flow field physical model was established by GAMBIT and the agitating area was processed by k-ε turbulence model and multiple reference frame method. The mixing effect was discussed under the two conditions: (1) Double impellers rotate in the same direction. (2) Double impellers rotate in different directions. The result shows that the mixing effect of the double impellers which rotate in different directions is better under the same condition. Its distribution of the turbulent kinetic energy is more reasonable, and it can ease the sediment at the bottom. The simulation results have certain reference value for the research of the law of the inner flow field so as to optimize its structure in the stirred reaction vessel.
Optimal Design of Pendulum in High Impact Shock Testing Machine for Middleweight
Authors: Wang Tao , Zheng Xiang Zhou , Wang Shi Bo
Published: October 2013

Impact test of shipboard systems must be taken before navy ships take service. Only in this way can we ensure the safety and reliability of them. In middle-weight high impact testing machine which is one of main devices to test medium weight equipments, pendulum is the most important as well as the most perishable part of this machine. Good quality of pendulum should be ensured. Energy demands, reliability, service life and deformation of the pendulum must be taken into account when design pendulum of this tester part. An optimization methods to design pendulum is presented in this paper. By means of optimization of the position of mass centre, percussion centre and impact point, the reliability and service life of pendulum can be improved.
Effect of Nitrogen on Crystal Grain Forming of Metastable Austenitic Manganese Steel
Authors: Chen Shao Chun , Chen Xi Jie , Lu Yue Mei , Wu Yun Bin , Lin Xiao Ying , Lin Yang
Published: October 2013

The effect of nitrogen on crystal grain for metastabl austenitic manganese steel was studied. The result indicated that the attachment of nitrogen element in the interface between the crystal and liquid steel will influence the formation mechanism of crystal, that the existing of nitrogen element hinder the diffusion of atoms, increase the free energy of critical nucleation, raise homogeneous nucleation rate of crystal and lower the growing velocity of crystal accordingly, and refine the crystal grain finally for casting steel. And the effect degree of nitrogen will be influenced by the specialty of nitrogen on critical micelle concentration. During heat treatment, because of covalent bond between nitrogen atom and iron atom and manganese atom, the existing of nitrogen element in the boundary of crystal or the attachment of nitrogen element on the face of crystal will hinder the diffusion of iron atoms and manganese atoms, so that lower the growing velocity of crystal and refine the crystal grain of steel finally after heat treatment.
Characterization of Microstructure, Texture and Properties of a Continuously-Annealed Cold-Rolled High Strength Structural Steel
Authors: Zhang Gong Ting , Deng Shu Hui , Zheng Zhi Wang , Liu Qin Chun
Published: October 2013

The mechanical properties, optical microstructure and textures of a continuously-annealed cold-rolled high strength structural steel were evaluated. The results show that the experimental steel has good balance of high strength and ductility, and the microstructure is composed of uniform, fine-grained ferrite and a little pearlite. The textures after recrystallization annealing are weak. The intensity of the strongest textures such as {114}<110> and {223}<110> are no more than 4. And the main {114}<110> and {223}<110> components are originated from the hot-rolling process and cold-rolling process, respectively, and preserved after annealing. The application of the experimental steel indicates that it can perfectly satisfy the stamping of some complicated structural parts in the automobile industry.
Research Progress of Surface Nanocrystallization on Metallic Materials by Surface Mechanical Attrition Treatment
Authors: Wang Hu , Wu Yun Xia , Ma Chen Shuo , Zhan Zhao Lin
Published: October 2013

In terms of the grain refinement mechanism caused by plastic deformation, and surface mechanical attrition treatment (SMAT) was developed for synthesizing a nanostructured surface layer on metallic materials to improve the overall performance and properties. Moreover, the SMAT can accomplish chemical heat treatment at low temperature due to the formation of nanocrystalline. Research progress of surface nanocrystallization on metallic materials by surface mechanical attrition treatment will be describe in terms of basic principle, the workpiece process and chemical heat treatment, etc. Further development and prospects will be solving about the SMAT.
The Reach on the Salt Spray Corrosion of 6000 Series Aluminum Alloys for the High-Speed Trains
Authors: Li Bo , Yang Jun , Wang Xiao Min , Qiu Pei Xian , Zhang Shu Fang , Jia Qiang
Published: October 2013

In this study, we conducted salt spray corrosion test of 6005, 6082 aluminum, we can evaluate the salt spray corrosion performance of 6 series aluminum through the comparison of sample mass of different days before and after the experimental, the observation of the microstructure of the specimen as well as the analysis of corrosion products, etc. The experimental results showed that: 6 aluminum alloy corrosion is sensitive to salt spray corrosion , the degree of 6005,6082 aluminum corrosion increases with the increasing of etching time, but Substantially, corrosion rate increases with etching time in the beginning and then decreases . In the beginning the etching degree of corrosion of 6005 is less than 6082, with the etching time, the etching degree of corrosion of 6005 is greater than 6082 in the mid, and the etching degree of corrosion of 6082 is greater than 6005 in the last.
Influence of Stress Concentration on Fatigue Property of Welded Joints of 5083 Aluminum Alloy
Authors: Yang Jun , Li Bo , Jia Qiang , Li Yuan Xing , Zhang Ming Yue , Chen Hui
Published: October 2013

Fatigue test of the welded joint of 5083 aluminum alloy with smooth and height of specimen and the weld zone than the high test measurement and theoretical stress concentration coefficient calculation, the weld reinforcement effect of stress concentration on the fatigue performance of welded joints. The results show that: Smooth tensile strength of specimens for 264MPa, fatigue strength is 95MPa, the tensile strength of the 36%. Higher tensile strength of specimens for 320MPa, fatigue strength is 70MPa, the tensile strength of the 22%. Higher specimen stress concentration coefficient is 1.64, the stress concentration to the weld toe becomes fatigue initiation source, and reduces the fatigue strength and the fatigue life of welded joints.
Thermoelectric Properties of n-Type AgPbSbTe Composites Containing Nanoscaled Phases
Authors: Liu Jing , Peng Liang Ming
Published: October 2013

The effects of nanophase additions on the thermoelectric properties of n-type AgPb18SbTe20 fabricated by combining fast melting and hot pressing were investigated. The presence of sovelthermally syntheszied AgPb18SbTe20 nanospheres or nanorods in the bulk yields remarkably improved thermoelectric properties. Nanophase additions produce a reduction in the Seebeck coefficent at about 300~550 K and the maximum Seebeck coefficient absolute values are, respectively, 378 and 380 μV·K-1 for LAST-18 with nanospheres and nanorods samples. The κ values of two samples with nanophases show a lower value in the entire temperature range compared to that of LAST-18 matrix. A maximum figure of merit, ZT=0.92 at 673K for the nanorod-containing composite is achieved mainly due to the reduced thermal conductivity. Furthermore, the temperature of ZT peak shift to a higher range originated from the enlarged energy gap.
Microstructure and Tensile Properties of Al0.5CoCrCuFeNi High-Entropy Alloy
Authors: Sheng Hong Fei , Peng Liang Ming
Published: October 2013

The Al0.5CoCrFeCuNi alloy with equiaxed structure was prepared. The as-cast alloy consists of face-centered cubic (FCC) solid-solution with equiaxed matrix and network grain boundaries. Annealing/quenching treatment at 600°C promotes the formations of new BCC structured phase and Cu-rich nanoprecipitations dispersed in grain boundaries, which are beneficial for enhancement in Vickers Hardness and tensile strength. The ultimate tensile stress up to 1002 MPa was achieved after the alloy was annealed following quenching treatment.
Effect of Grain Refinement and Composition on the Wear of Cemented Carbide Cutting Tools
Authors: Cheng Jian Bing , Pang Si Qin , Wang Xi Bin , Yu Qi Xun
Published: October 2013

Tool life tests of continuous cutting superalloy GH2132 were carried out by WC/Co cemented carbide cutting inserts of different grain size and cobalt content, and flank surface wear morphology of the cutting inserts were observed by ZEISS continuous zoom stereo microscope and microphotograph system. The results show that grain size and cobalt content strongly influence the cutting tool life and tool wear, grain refinement and proper cobalt content are help to improve the tool life and the wear resistance of WC/Co cemented carbide. The wear mechanisms of different grain size and cobalt content of ultrafine cemented carbide tools were adhesion and notch, among them, adhesive was the main wear mechanism at higher cutting speeds.
Design of Clamping Fixture for Active Fixing-Board Used in Vibration Experiment
Authors: Wang Mei , Wang Zheng Long
Published: October 2013

Clamping fixture of active fixing-board plays an important role on vibration experiment. In this paper, the clamping fixture for active fixing-board is designed based on fixture theory. Modal characteristic of the fixture designed is analyzed using finite element software ANSYS. Research shows that the requirement of the vibration experiment on active fixing-board can be met completely by the fixture designed in this paper.
Design of 5HZL-1200 Type Maize Ear Vertical Drying System
Authors: Zhao Wu Yun , Fei Qiang , Yang Jie , Dai Fei
Published: October 2013

Corn grain drying not only required high productivity, but also guaranteed the quality of the dry ear after good. Consequently, we design 5HZL-1200 type maize ear vertical drying system, the control part of which was corn grain drying monitoring system developed on the kingview. It overcomed the problem of low efficiency of seeds drying, artificial error and so on. The experimental results of using the vertical drying system for corn grain drying experiment showed that adopting vertical type of drying made its drying time 21h shorter than that of flat drying,moreover, the precipitation rate was increased on average by 42.8%, the operation cost was saved of 36. 8%, and corn grain crushing rate was reduced by 2.2%. the system had proved to have a series of characteristics, including high thermal efficiency, small occupied area, good drying quality, low unit cost , and high automation, etc.
Finite Element Model of Human Cochlea Considering of the Helicotrema Size
Authors: Xu Li Fu , Ta Na , Rao Zhu Shi , Tian Jia Bin
Published: October 2013

A 2-D finite element model of human cochlea is established in this paper. This model includes the structure of oval window, round window, basilar membrane and cochlear duct which is filled with fluid. The basilar membrane responses are calculated with sound input on the oval window membrane. In order to study the effects of helicotrema on basilar membrane response, three different helicotrema dimensions are set up in the FE model. A two-way fluid-structure interaction numerical method is used to compute the responses in the cochlea. The influence of the helicotrema is acquired and the frequency selectivity of the basilar membrane motion along the cochlear duct is predicted. These results agree with the experiments and indicate much better results are obtained with appropriate helicotrema size.
Research on Appointing Diversified Subjects for Evaluating Performances of Energy-Saving and Emission-Reducing of Local Party and Government Leaders
Authors: Zhou Jing Kun , Hao Qi
Published: October 2013

This paper analyzes the necessity of appointing diversified subjects for evaluating performances of energy-saving and emission-reducing of local Party and government leaders, provides some thoughts about appointing diversified subjects for evaluating energy-saving and emission-reducing of local Party and government leaders, enhancing the publics consciousness of attending evaluation of energy-saving and emission-reducing of the leaders, establishing 360 degree structure of evaluation subjects of the performances of leaders, setting weight of diversified evaluation subjects, completing systematic guarantee system for attendance of diversified subjects, enhancing trainings of diversified evaluating subjects, improving performance information system, cultivating evaluation culture of attendance of diversified subjects, etc.
Introduction of Modular Design in the Conceptual Design of Refrigerators
Authors: Zhang Jiu Mei , Xu Jing , Tang Bin
Published: October 2013

This paper states the method of modular design in the conceptual design of refrigerators, exploring the application of the modular theory in the design of products and coming to an opinion that it is efficient and quick to find a method in the conceptual design of fridges through the introduction of modularization concept, which can broaden the concept of innovation and the development space in the design of conceptual fridges, and stateing the concept of modular design is applied to the design of household eappliances, which also find a breakthrough for the sustainable design of the appliances product.
Robust Visual Tracking Using Particle Filtering on SL(3) Group
Authors: Xie Ying Hong , Wu Cheng Dong
Published: October 2013

Considering the process of objects imaging in the camera is essentially the projection transformation process. The paper proposes a novel visual tracking method using particle filtering on SL(3) group to predict the changes of the target area boundaries of next moment, which is used for dynamic model. Meanwhile, covariance matrices are applied for observation model. Extensive experiments prove that the proposed method can realize stable and accurate tracking for object with significant geometric deformation, even for nonrigid objects.
Design and Realization of a Certain Type of Radio RF Circuit Board Detecting and Teaching Platform
Authors: Shao Zhi Chao , Liu Gui Yun , Tan Xiang Lin
Published: October 2013

A certain type of command and control system detecting and teaching platform is designed in order to realize clear display of the operation, implement of the capability teaching, detecting and fault diagnoses conveniently. This thesis which is a part of the program introduces the design and realization of a certain type of radio RF circuit board detecting and teaching platform. The platform consists of adapter and Teaching Software. Experiments indicate that the platform is reliable in the operation, can improve the efficiency of circuit board teaching and provide a method for circuit board detecting and fault diagnoses.
Research on Target Tracking Algorithm Based on Particle Filter and Mean-Shift
Authors: Wu Yan Hai , Xie Xia Min , Han Zi Shuo
Published: October 2013

Since Mean-Shift tracking algorithm always falls into local extreme value when the target was sheltered and the particle filter tracking algorithm has huge calculation and degeneracy phenomenon, a new target tracking algorithm based on Mean-Shift and Particle Filter combination is proposed in this paper. First, this paper introduces the basic theory of Mean-Shift and Particle Filter tracking algorithm, and then presents the new target tracking which the Mean-Shift iteration embeds Particle Filter algorithm. Experiment results show that the algorithm needs less computation, while the real-time tracking has been guaranteed, robustness has been improved and the tracking results has been greatly increased.
Consensus of Discrete-Time Second-Order Multi-Agent Systems with Partial Information Transmission
Authors: Ding Lei
Published: October 2013

This paper investigates the consensus problem of multi-agent systems with partial information transmission under an undirected topology. A distributed consensus protocol is proposed with local velocity feedback and the position information from neighbors. The consensus problem is converted to the stabilization problem by transforming the original systems into a reduced order state system. Then, by using graph theory and Jurys stability test, a sufficient and necessary condition for consensus of multi-agent systems is derived. An example is given to illustrate the effectiveness of the presented results.
Dependence of Oscillation of Spiking Neural Population on Strength of Inhibitory Feedback
Authors: Xie Jin Li , Zhao Jian Yu , Zhao Qin Jun , Li Yue Yang
Published: October 2013

Based on linear-response-like approach and simulations, the relationship between the strength of inhibitory feedback and the oscillation is explored by spectral properties of networks with leaky integrate-and-fire neurons under varying feedback strength. It is found that the network oscillation is enhanced sharply with increasing the feedback strength when the feedback is weak, but is insensitive to the feedback strength when the feedback is not weak. These results suggest that inhibitory feedback plays a limited role in enhancing the network oscillation. A qualitative analysis of the limited role of the inhibitory feedback in enhancing network oscillation is also presented.
Study on Preparation and Properties of PMMA Composite Microspheres as the Matrix of Low Density Proppant
Authors: Xu Yang Cheng , Chen Tao , Hu Jiao Li , Tang Cong Hai , Ma Rui , Gao Jie , Bao Feng
Published: October 2013

In this paper, suspension polymerization is used for the preparation of PMMA microspheres, PMMA cross-linking DVB microspheres, PMMA-co-St composite microspheres and PMMA-St-SiO2 composite microspheres, and apply IR spectroscopy, scanning electron microscopy, compressive strength, density, thermal analysis to the prepared polymer microspheres. The purpose of our work is to find the feasibility method of synthesis process for PMMA material and composite microspheres, and the prepared theoretical basis of proppant with low density and high strength for oil drilling applications by performance test.
Using Open Source to Construct a UAV-Based Photogrammetric Data Acquisition System
Authors: Hsiao Han Wei
Published: October 2013

In recent years, the rapid development of information and electronic technology has attracted a lot of suppliers to produce many different sensor devices. This results in a lower price of these sensor devices. Consequently, the application of these control systems is getting popular. In the popularization process of these important information and electronic technology, there is a group of self-less and enthusiastic designers, who release their important research outcomes as Open Source resources. These resources are available to other people and free of charge. In addition to benefitting the users, more various-fields enthusiastic participants are attracted to dedicate themselves to the development of these Open Source resources through this benign interactive way. This leads to a more quickly and more perfect development of the Open Source applications in different fields. The trend of applying Open Source resources to the development in the area of Unmanned Aerial Vehicle (UAV) and Digital photogrammetric processing is clearly and significant. This study focuses on the surveying of different Open Source resources for constructing a UAV-based photogrammetric data acquisition system. Many available Open Source resources used to construct this system are surveyed, such as the UAV flight control technology and the capture and post processing technology for the digital aerial photos. Two types of UAV photogrammetric data acquisition system based on Open source resources are accomplished as well.
A Method of Extracting Feature of Phonic Signal Based on the Matrix Analysis
Authors: Xu Yang , Hu Fang Chao
Published: October 2013

In the speech recognition technology, feature extraction is essential for the system recognition rate, taking amount of strategies to find the better feature vectors are most researchers target. This paper presents a method of extracting feature of audio signal based on the discrete wavelet transform, then decomposed the coefficient matrix by the matrix analysis way, through this method to find a new thinking on the way of extracting feature vector. The method can be achieved in the procedure. The main purpose is to reduce the dimension of feature vector, make the vector briefer, and then reduce the computing complexity in the embedded system. This method can reduce the feature vectors dimension, accelerated the computing velocity.
Authentication System Using EEG Biometric for Smart Home
Authors: Hu Jian Feng , Mu Zhen Dong
Published: October 2013

s: smart home, is a trend of home furnishing development, smart home operation should not be too complicated, it will lose the meaning of smart home, the EEG signals, different from the degree of response to familiar objects, using the EEG signal successfully solve the smart home in the room into the authentication problem.
A Novel Chipless RFID Tag with Multi-Resonators Based on Frequency Selective Surface
Authors: Li Hui Xin , Hong Wei Jun , Li Shu Fang
Published: October 2013

A new scheme that FSS applies in chipless RFID tag is proposed. The bandpass cross-slot FSS cell is used in the chipless RFID tag based on the spectrum signature as the resonator. The chipless RFID tag successfully performs 6 bit in 3-9GHz, the test result of S12 is-11.9~-14.3dB. The whole tag could be completely printed and the cost could be quite low. The size of the whole tag is 24.5*9cm2.
Secure and Efficient Certificateless Signature and Blind Signature Scheme from Pairings
Authors: Chen Min Qin , Wen Qiao Yan , Jin Zheng Ping , Zhang Hua
Published: October 2013

Based an identity-based signature scheme, we givea certificateless signature scheme. And then we propose a certificateless blind signature (CLBS) scheme in this paper. This schemeis more efficient than those of previous schemes by pre-computing the pairing e (P, P)=g. Based on CL-PKC, it eliminates theusing of certificates in the signature scheme with respect to thetraditional public key cryptography (PKC) and solves key escrowproblems in ID-based signature schemes. Meanwhile it retains themerits of BS schemes. The proposed CLBS scheme is existentialunforgeable in the random oracle model under the intractabilityof the q-Strong Diffie-Hellman problem.
Coordinated Control Strategy of Distributed Photovoltaic Generation and Load
Authors: Zhang Long , Chen Xing Ying , Chen Kai , Ding Xiao Hua , Chen Xing Ying , Liao Yin Cheng , Yu Kun
Published: October 2013

As the development of new energy, more and more new energy distributed generation will be plugged in the distribution system, it makes the system more effective and the load capacity of system is obviously increased. But the access influences the voltage value of system and the security of system a lot. So it needs to control the capacity of plugging in. This paper proposes a new method with the coordinated control of distributed generation and load in the distribution system. In this way the system can accept the new energy comfortably and safely.
The Application of the UPFC in Power System
Authors: Xiong Xin Hua , Min Zun Nan , Zhong Ting Jian
Published: October 2013

UPFC is one of the flexible ac transmission system (FACTS) compensation devices, it has a comprehensive compensation function, UPFC has the characteristic functions as follows: fast anddynamical adjusting the parameters of electricity transmission system, such as voltage, impedance, phase angle, active power and reactive power, expanding thecapacity of electricity transmission, improving the stability of power system and optimizing the operation of power system.So it is a perfect fashion for active and reactive power controller, and also it has the function of regulating voltage.
Research on Computer Controlled Optical Surfacing (CCOS) Working Function at Wear State
Authors: Liu Wen Long , Lin Bin , Zhang Xiao Feng , Wang Bo
Published: October 2013

The distribution of working pressure in CCOS has been studied when the polishing disc frayed. Combined with the planetary motion, the working functions at wear and ideal states were calculated separately, the result shows that the function peak is higher at wear state and it is a convex curve instead of a concave curve at ideal state. The impact of different wear loss on the working function has been also studied in this paper, one preliminary conclusion has been obtained that with the increasing of the wear loss, the working function peak will get higher and sharper, and the effective range of processing will decrease meanwhile. It can be predicted that although the removal rate may not change obviously at the initial stage of wear, the processing quality may decrease and the processing stability will be worse since the variation of the removal distribution.
Affective Product Design Based on Random Forest and Association Rules
Authors: Shi Jian , Zhang Shu You
Published: October 2013

Affective design, which aims to design favorable products that meet the customers affective needs and address customers affective satisfaction, has gain increasing attention in modern industries. This paper proposed an affective design approach combing random forest regression and association rule mining, where random forest is adopted to reduce the dimension of design elements and association rules is used to map the affective need to design element. The efficiency of the method is demonstrated by an application of elevator design.
Study of Agricultural Product Logistics Information System Based on Multi-Agent
Authors: Huang Xiang Li
Published: October 2013

In this paper, after analyzing the importance of constructing agricultural product logistics information system and features of multi-agent, combining agent technology and logistics technology, the agricultural product logistics information system based on multi-agent is studied, and the model of this system is given, and coordination mechanisms between agents are also discussed. Moreover, implementation scheme of the system is introduced. It is intelligent, reconstructed easily and has strong ability to interact, it can provide some basis for developing agricultural product logistics information system further.
Research on Evaluation of the Modern Logistics Enterprise Technological Innovation Ability Based on SEM
Authors: Wang Cheng Jun , Gou Min Min
Published: October 2013

This paper constructed the technological innovation ability index system of logistics enterprise, propose causation model to evaluate technology innovation ability of modern logistics enterprise, model and solve the causal relationship among the evaluation indexes by structural equation model, The empirical results show that: this model can correctly describe the causal relationship between the indexes, define key indicators of logistics enterprise technology innovation ability accurately, and determine the main influencing factors, provide scientific basis for evaluating and improving the modern logistics enterprise technology innovation ability.
Semi-Definite Programming Based Waveform Design for Spectrum Sensing
Authors: Wu Xuan Li , Sun Lu Kuan , Zhao Wan Jun
Published: October 2013

In order to solve the problem of spectrum shortages, dynamic spectrum access based cognitive radio technology was proposed, and the technology of spectrum sensing is the foundation of cognitive radio. In this paper, a semi-definite programming based waveform design algorithm is proposed for spectrum sensing. Considering the energy concentration property of Chirp signal, the Chirp signal is adopted as the basic function, which makes the composite waveform perform like impulse function in fractional Fourier transform domain. Simulation results show that the NESP (Normalized Effective Signal Power) of the designed waveform using the proposed algorithm can be over 70%, and the designed waveform also retains good energy concentration property in fractional domain.
The Study Summarize of Computational Method on Transition Process in Hydropower Units
Authors: Wu Bi Ying , Tang Ning , Tong Shui Guang
Published: October 2013

In the operation of the hydropower units, it often come across condition changes such as start-up, normal stop, increase or decrease the load and load rejection. This will cause the hydraulic transient process of the water power generation system, which is of great significance to the safe and stable operation of hydropower station. This paper analyzes the method to calculate the transient process of hydropower unit and expounds the principle of all kinds of calculation methods and steps to lay a foundation for further optimization study.
Discussion on Development and Application of Remove Automatic Metering Technology of Oil Well
Authors: Wang Li Na , Liang Jin , Zhang Sheng Li , Wang Li Ya
Published: October 2013

The conventional dynamometer diagram diagnosis method of rod pumped well has the function to calculate the well yield based on the downhole dynagraph. In recent years, it can substitute for the traditional separator metering mode technically through further development and support to measure the oil well in an automatic and remote manner, analyze the working conditions and alarm in a real time manner, thus simplifying the collection process and improving the metering accuracy and working efficiency. In this paper, the technical and management problems in development and application of automatic metering technology of rod pumped well dynamometer diagram in Huabei Oilfield are discussed and solutions are proposed in order to guide the wide application of such technology in Huabei Oilfield.
The Design of Force-Displacement Characteristics Test System for Electromagnet
Authors: Zhang Xi , Cui Ya Bin , Xia Peng , Liu Xin Xing , Yu Miao
Published: October 2013

Electromagnet for valve is a key executive device of electromagnetic valve control system, as a dynamic element, force and displacement characteristics of electromagnet, directly affect the reliable performance of devices made of it. By reference to other electromagnet testing standard and method, proposed a based on vc6.0 and stepper motor of force and displacement characteristics for electromagnet test system. The system consists mechanical platform, pressure sensor, data acquisition card and PC test software. The system is easy to operate, high degree of automation, stable performance. Provides an auxiliary electromagnet selection testing and inspection tools, can improve the work efficiency.
Analysis and Optimization of the Rubik's Cube Center Shaft Injection Based on Moldflow Software
Authors: Li Hui , Chen Yan
Published: October 2013

Fortunately recent years the developments of CAD/CAE technique in the mold industry have been obtained great progress and large-scale application due to its low-cost, high-efficient, all-position and all-procedure parameters designing and simulation function. According to the structural characteristics of the Rubik's cube center shaft, using Moldflow software to analyze and simulate the injection molding process, including gate location, filling, cooling and warping. Through comparison analysis under different conditions of injection molding process, the optimum technological parameter is determined. Finally, UG software is used to build up the model of injection mold.
Effect of Turbulence Model on Simulation of Vehicle Aerodynamic Characteristics Based on XFlow
Authors: Han Shan Ling , Yu Ru Xing , Li Zhi Yong , Wang Yu Yue
Published: October 2013

The stability, comfort and safety of vehicles depend largely on the aerodynamic characteristics of the vehicle in high speed. As the turbulence model plays a decisive factor in the numerical simulation of aerodynamic characteristics, a simulation analysis of Ahmed model with a slant angle of is carried out by the XFlow software. Then the paper presents the changes of aerodynamic parameters relative to the experimental values with four turbulence models: Spalart-Allmaras model, WALE model, Dynamic Smagorinsky model and Smagorinsky model. It is found that the result of simulation with Smagorinsky model is in good agreement with experimental value, and the simulation of the wake vortex separation is consistent with the actual phenomenon. The Smagorinsky turbulence model has a good simulation precision.
Experimental Study on the Stability Properties of Different Design of Tandem Wing Airship Models
Authors: Liu Yang , Zeng Pan , Lei Li Ping
Published: October 2013

This paper introduces a set of new design for the tandem wing airship, which the angular position between the front wing and tail wing are at 0o and 45o. Through the Wind Tunnel Platform test on the scaled models, lift-drag force for each configuration at different speed and mooring point was obtained and the aerodynamic performance and stability properties were analyzed. The results indicate that the tandem wing models have considerable higher aerodynamic characteristic and maintain a better stabilizability. The effect on longitudinal and yaw moment are relating to the mooring point, angle and position of the tandem wing. Result of this study could provide a new approach in designing an efficient tandem wing airship.
The Commercial Real Estate Operation Stages Risk Analysis Based on the ISM Model
Authors: Wang Ying , Jiang Miao
Published: October 2013

Over these years, that many real estate developers, business organizations and other companies all start to invest the development of the commercial real estate becomes the hot topic and also receives enormous attention. However, the exploitation of the commercial real estate has high risk in our country because of the complexity of operation and the blindness of investment. This article applied ISM theory to analyze the investment risk of the commercial real estate among operation stages to build the ISM model of the commercial real estate risk, and proposed some measures and recommendations.