bluuebunny/crossref_metadata_2025 huggingface dataset:
Extraction Method for the Surface Image Defects of the Magnetic Tile Based on Adaptive Gaussian Filtering
Authors: Du Liu Qing , She Cheng Nan , Yu Yong Wei
Published: October 2013

This paper proposed a defects extraction method based on one-dimensional adaptive Gaussian filtering. To overcome the difficulties as various defects, low contrast, complex background and overall uneven brightness, this method designed a new one-dimensional adaptive Gaussian filter based on the defect size. According to the gray change of the magnetic tiles surface image in the different regions, we progressed the Gaussian filtering based on the selective one-dimensional scan line by region, and made the width of the filter can automatically adjust with the defect size, simulated the threshold value curve, and extracted the magnetic tiles surface defects. The experiment shows that this method can accurately and quickly extract the various types of defects of the magnetic tile surface.
Research on the Risk Assessment of IPD Mode Based on the Fuzzy Comprehensive Evaluation
Authors: Xu Yong Ge , Lv Peng
Published: October 2013

Integrated project delivery as a new mode of project management, its ideas of integration guides the future development direction for the construction, but its theory and practice of development is not mature either. There is still a lot of uncertainty in the process of practical application, need to identify and analyze various of risk factors, which provide theoretical basis for that the IPD model are fully used to project management practices.
The Research of New Selective Leakage Protection Device Based on Additional DC and Zero-Sequence Power
Authors: Wang Yan Wen , Wang Yin Sheng
Published: October 2013

By theoretical analysis and computer simulation,this paper has successfully solved the compatibility problembetween the Leakage protection with additional DCand zero-sequence power direction Leakage protection, and realized the goal of the two different ways of leakage protection sharingone set of electrical leakage protection system.This paper focuses on the basic components of "EDS-336/660 centralized-distributed selective leakage protection system"and its practical usage in Lvjiatuo Coal Mine.
Research on the Online Verification Instrument for Diaphragm Gas Meter
Authors: Huang Zhen Wei , Yin Rui Duo , Zhu Wen Jun , Shen Wen Xin , Ge Shen
Published: October 2013

A novel online verification instrument for diaphragm gas meter based on positive displacement principle is proposed. Through an in-depth research on online verification technology, a dedicated wave absorber is designed to eliminate the effect of pressure pulsation. The whole series of the online diaphragm gas meter verification in normal operation condition is realized by adopting fixed-point calibration and nonlinear correction technology. The experimental data shows that the uncertainty is within 0.5% and the ratio of the measurement range is reach to 100:1.
Authentication System for Biometric Applications Using Mobile Devices
Authors: Hu Jian Feng , Mu Zhen Dong
Published: October 2013

Mobile equipment has now become a new platform for information exchange, spend a lot of information exchange, how to effectively protect the mobile platform information security? Research has shown that, EEG signal can be used as identification tool, the user's information protection and good, this paper to protect the information security of mobile devices to research how to use EEG; the EEG signal is feasible for mobile equipment identification.
A Solution to Multi Objective Optimal Power Flow Using Hybrid Cultural-Based Differential Evolution
Authors: Srikun Isaree , Ruekkasaem Lakkana , Aungkulanon Pasura
Published: October 2013

This paper presents a hybrid Cultural-based Differential Evolution for solving a multi-objective Optimal Power Flow (OPF) in support of power system operation and control . The multi-objective OPF was formulated for tackling with total generation cost and environmental impacts simultaneously. The proposed method was applied to the standard IEEE 30-bus test system. The results show that solving the multi-objective OPF problem by the Cultural-based Differential Evolution is more effective than other swarm intelligence methods in the literature.
Based on the LabVIEW Electrified Railway Signal Acquisition and Processing System of Electromagnetic Radiation
Authors: Chi Yao Dan , Mu Yu Song , Gu Hai Long
Published: October 2013

Electrified railway got rapid development in recent years, increasingly highlights its electromagnetic compatibility problems. In this paper, on the basis of predecessors' research results, the virtual instrument technology is applied to the electromagnetic radiation of electrified railway signal measurement, complete embedded processing equipment design, make its have the electromagnetic radiation on the railway signal detection, acquisition and processing functions. Based on LabVIEW embedded development environment configuration and Windows CE operating system builds and transplantation, realize the man-machine interface easy to operate and flexible signal processing algorithms.
Control and Communication Techniques of High-Speed Railway Train Wheel-Set Running-In Test Based on LabVIEW
Authors: Li Hong , He Qing
Published: October 2013

The production, assembly and repair qualities of high-speed railway train wheel-set directly relates to traffic safety. It is very import to build wheel-set running-in test bench and develop high efficiency control and communication module. Running-in test methods of high-speed railway wheel-set, the communication techniques between computer and Frequency Inverter and serial port communication based on LabVIEW are introduced. The control and communication module is set up by using the Frequency Inverter, motor, serial communication card, computer and other devices. The control and communication software based on LabVIEW is developed. Working conditions are simulated effectively. The automatic testing is realized. The mutual interference of reading and writing commands to Frequency Inverter because of using one port is solved. All kinds of control and communication functions are achieved. The applications show that the design of control and communication module is reasonable, the testing process is flexible and controllable, the control and communication is accurate and efficient, the analyzed results are reliable.
The Method of Infrared Point Target Detection and Tracking Based on DSP+FPGA
Authors: Chen Yu , Yu Yan Xin , Zhao Ting
Published: October 2013

Accounting for the problems of dynamic infrared point targets are difficult to detect accurately and to track in complex background, the single-frame image background suppression by the high-pass filtering and binary processing. Then it uses unscented Kalman filter (UKF) method to get the predicted target trajectory and achieves a precise target tracking. According to the proposed detection and tracking algorithm of motion infrared point target, this paper designs and implements a system of high speed real-time image processing platform based on DSP+FPGA structure. Test results show that when the target is in the interference condition, tracking can still be stabilized, its processing time is about 9.2ms per frame to meet real-time requirements.
Application of Artificial Potential Fields in the Hydrographic Measurement Control System
Authors: Jia Gui Xi , Dong Hong Chao , He Dan Dan , Zhang Hong Da
Published: October 2013

This paper describes a new navigational algorithm that combines Artificial Potential Fields with PID controller to realize accurate channel survey, automatic obstacle avoiding, optimal route search et al. A set course can be obtained through this new algorithm and the steering of the unmanned survey ship will be worked out by closed-loop control. In test system, the location of the ship is obtained by GPS, and the error of electric steering gear angle controls PWM pulse signal, which drives servo motor by power amplifying device, thus making the electric steering gear to turn as expected. Communication between upper and lower computer is realized by C language and serial port communication, so as to get parameter information and track images of the ship in a real-time manner. The result shows that the new navigational algorithm more efficient and precise, and can be widely used in fairway surveying engineering.
Research on Electrohydraulic Position Servo System Control of Honing Machine
Authors: Ma Zhi Hong , Huang Ya Zhou , Cai Shan Le , Luo Fu Fang
Published: October 2013

This paper simply describes basic principles of the honing machine. And using MATLAB software this paper carries out frequency-domain analysis and time-domain analysis of this system. According to actual processing situation putting forward to control overshoot. Because this system cannot meet the needs, utilizing PID to adjust this system. At the same time putting parameters obtained from PID adjustment as initial value, this paper carries out optimization, and gets a better result.
Lean Cost Analysis Based on BIM Modeling for Construction Project
Authors: Xu Yong Ge , Qian Cheng
Published: October 2013

With the development of information technology, both Building Information Modelling (BIM) technology and lean construction concept became more and more widely applied in the engineering field in our country, meanwhile.resulting in their prominent synergies with each other. BIM technology and lean construction concept are designed aimed at reducing wastes, saving costs, increasing productivity, and creating maximum value at the same time. Therefore, it will be more effective on value creation for their collaboration compared to their separate utilization from engineer perspective. This paper reports the combined technique between BIM technology and lean construction concept for its application in the cost management of engineering project of the building throughout the life-cycle among BIM mode, the lean cost analysis and control research. This combined technology is shown to be not only the main characteristic of construction enterprises but also the reference on improvement of production efficiency as well as competitiveness.
Living Comfortable Strategies for Offices in Taiwan's Hot-Humid Climate
Authors: Sung Wen Pei , Chen Rong , Chang Hung Chang , Zhao Y.K.
Published: October 2013

Taiwan is located in the subtropical zone. The climate in summer is hot with high humidity. In order to establish a comfortable office, it needs a lot of active devices, such as: air conditioner to maintain the suitable indoor temperature and humidity. In this study, a business office in the South District Public Health Center, Taichung City is conducted. According to our findings for the office, although the measured indoor temperature was closer to a comfortable temperature during the winter, the occupants of the indoor space still felt excessively warm. By contrast, the occupants of the same space achieved thermal comfort during the summer. This implies that most of the office occupants preferred a cooler environment with a lower temperature. In addition, because the summers in Taiwan are humid and hot, the occupants of an indoor space tend to feel uncomfortable because of the high humidity regardless of whether the temperature is maintained in a comfortable zone. A lower temperature (approximately 21.2-23.9°C) indirectly reduces humidity, thereby making the occupants comfortable.
Research of the Self-Balanced Cable Support System for Large Cross-Section Cable Tunnel
Authors: Liu Si Nan , Zhang Bin , Gu Ren Guo
Published: October 2013

The cable support system in large cross-section cable tunnel, which can solve the cable laying problem of big cross section cable and multi-loop cable effectively, gradually become the development trend of urban electricity transmission. Combined with the structure feature of large cross section shield tunnel, a new type of self-balanced shield tunnel cable support system is proposed. The safety and rationality of this system has been validated by the structure calculation, the finite element analysis of ADINA and the full scale model test. The analysis shows that the system has some advantages, such as excellent whole mechanical characteristics, strong adaptability, convenient construction and low cost. The system can fully satisfy all requirements of the cable tunnel construction and all functions of operation. The stress distribution of the structure is relatively homogeneous, the bearing capacity of components and the global stability of it also meet the requirements. With the test load which is about 1.5 ~ 4.0 times as large as design load, the support system displacement is 0.65 ~ 2.5 mm, which shows that the structure is safe and reliable. The research achievements can provide theoretical basis and experimental basis for the design of large cross-section cable tunnel.
Key Techniques of Direct Driving of Rapid Prototyping Machine within CAD System
Authors: Wang Wei Chen
Published: October 2013

To avoid the precision decrease of the machining data transferred from CAD to rapid prototyping (RP) system, key techniques of driving RP machine within CAD system were researched. The method of achieving the layers contour scanning data within CAD system was researched; then, the direct driving mode of RP machine was established; finally, tests were conducted on a polystyrene foam cutter machine with example of layer generation. Tests show that the approximate processing to CAD model can be avoided between CAD and RP, and RP machine can be driven and controlled within CAD system.
Design and Antiknock Impact Performance Analysis of New Mine Refuge Chamber Cabin of Waterproof and Antitoxic
Authors: Gong Xiao Yan , Li Na Na , Gao Xin , Guo Jun , Wu Zhe , Xue He
Published: October 2013

The emergency escape hatches of refuge cabin are usually installed in both sides of the life supporting compartment, which might cause the toxic gases or water enter into life supporting compartment when the gas explosion and water inrush accident occur. A new type of refuge cabin structure that can effectively resist the toxic gases and water entering the life supporting compartment is developed in this paper. Numerical simulation of antiknock impact performance of the new refuge cabin was calculated and analyzed by using the finite element software of LS-DYNA.The stress and strain distributions and maximum antiknock performance were obtained. Refuge chamber cabin has been optimized to reduce cost. The antiknock impact performance of optimized mine refuge chamber cabin can reach 1.4MPa which is greater than the 0.6MPa of standard value and the cost can be reduced approximate 19% than the original model.
Dynamic Response Analysis of Asphalt Pavement on Steel Deck under Design Loads
Authors: Gao Feng , Wei Dao Kai , Wang Xiao Ping , Tian Guo Zhi
Published: October 2013

It will stir up the vibration of asphalt deck surfacing when the Vehicles pass through the steel bridge deck. The research of the moving vehicles vibration characteristics of the deck surfacing has been one enthusiastic concern. By the time history analysis method of finite element, the paper studied the dynamic response of the deck surfacing in different speeds of vehicles, and then analyzed the effect of the deck surfacing by different speeds.
Error Sensitivity Analysis for Machine Tool Based on Three-Dimensional Vector Chain
Authors: Huang Qiang , Gao Chan Jun
Published: October 2013

Error modeling and analysis can provide some important direction to the machining precision control. According to the characteristics of topology structure on machine tool, a space error model of machine tool and detailed modeling method are presented in this paper, which are based on three-dimensional vector chain. Taking a lathe as an example, the application method of this model in error sensitivity analysis is introduced. By this model, the relationship between the relative error of workpiece-tool and each source error can be solved by ordinary vector operation, and the analysis efficiency should be enhanced greatly.
Research of Integrated Distribution Scheme of Reactive Power Compensation Based on SVG for Coal Mine Power System
Authors: Wang Yan Wen , Lu Dan
Published: October 2013

Aiming at the situation of the low power factor of coal mine power system, this paper puts forward an integrated distribution scheme of reactive power compensation based on SVG. In this paper, not only the disadvantageous influences of reactive power of coal mine power network are analyzed, but also the working principle and advantages of SVG are introduced. This paper proposes a distribution scheme of three-level reactive power compensation, which is to compensate in the sides of high voltage, high-low voltage power distribution and the long-distance high-power loads. According to the results of theoretical calculation and MATLAB simulation, the scheme can reduce the power loss and increase the power factor, so the power quality of coal mine can be improved.
A Study on Public Construction Project Duration Risk Identification and Evaluation
Authors: Luo Fu Zhou , Zhou Yan , Shang Jing Yu
Published: October 2013

According to the Intricate Dynamic Relationship of the Duration Management System，the Paper Identified Risk Factors for the Object.Then Established a Comprehensive Integrated Public Construction Project Duration Risk Assessment Model with the Application of Game Theory-Based Weighting Method. the Model is Validated Effective and Reasonable through Simulation Analysis. and it also Provides a New way of Thinking in the Duration Risk Assessment.
Research on Numerical Simulation of Quad Bundle Conductor on Galloping
Authors: Zhan Xue Ping , Zhu Kuan Jun , Liu Cao Lan , Liu Bin , Zhang Jun , Tang Guang Rui
Published: October 2013

The models of the multi-bundled conductors are constructed by finite element method in this paper. The numerical results are given by using the 4th order Runge-Kutta method considering aerodynamic parameter of sub-conductor. The simulation results are obtained on galloping of quad bundle conductors with the different span. Thus some effective numerical results of quad twin bundle conductor can provide a useful reference for anti-galloping design.
Influence of Ultrasonic Energy on Pore Structure of Ni-P Ultra-Black Films Produced by a Novel Blackening Process
Authors: Jin Yong Zhong , Yang Kui , Zen Xian Guang , Yue Pan Pan , Zeng Guo Qing
Published: October 2013

Ni-P ultra-black films were prepared by ultrasonic chemical etching of electroless plated Ni-P films using 8 mol/L nitric acid at 40 °C for 20 s with different ultrasonic power ranging from 0 to 195 W. Scanning electron microscopy (SEM) was used to study topographic characteristics of the films. The results show that ultrasonic oscillation plays an important role during ultrasonic chemical etching of electroless plated Ni-P films. The enhanced pore features with higher porosity through coalescence of adjacent isolated pores have been observed at 0-105 W. The increase in pore size of Ni-P etched films with the ultrasonic power (from 105 to 195 W) has been confirmed by SEM characterization. Generally, the dependences of relative etching rate on ultrasonic power are closely associated with pore size, pore shape and the distribution of etching pores.
Functional Studies on Coffee Yarn Knitted Clothing Fabrics
Authors: Zhu J.H. , Yang J. , Ge C.H. , Zhang Hong Xia , Zhu C.Y. , Li J.T.
Published: October 2013

To study functionality of coffee yarn knitted clothing fabrics, use five different proportion of coffee yarn: 70% viscose/30% coffee yarn; 67.5% viscose/32.5% coffee yarn; 65% viscose/35% coffee yarn; 62.5% viscose/37.5% coffee yarn; 60% viscose/40% coffee yarn, knit five kinds of fabrics on computerized flat knitting machine.Test and analysis odor removal performance, hygroscopic, heat accumulation function of trial fabrics. The results show that: to coffee yarn and viscose blended knitted fabrics, along with coffee yarn content increases, the odor removal rate of the fabric has increased significantly, the fabric hygroscopic enhance, better performance of heat accumulation. 40% coffee yarn content of the fabric has a good heat accumulation.
Characterization of Gamma Irradiated Isotactic Polypropylene by Mixtures of Hindered Amine/Organo-Phosphite Stabilizers
Authors: Li Min , Xiao Li Guang , Zhao Hong Kai
Published: October 2013

In this work, the effect of γ-irradiation on neat polypropylene (PP) and PP with the stabilizers have been studied by means of wide-angle X-ray diffraction (WAXD) and tensile properties. There is a new reflex 300, β-phase, appeared in irradiated neat PP sample, compared with non-irradiated neat PP sample. When T/S ratio are 0.1 wt%/0.1 wt% and 0.1 wt%/0.3 wt% of PP, the reflex 300 of irradiated PP with different radiation doses all increased. However T/S content is 0.1 wt%/0.5 wt% of PP, the reflex 300 is not appeared. Among the samples which contain stabilizers, the stabilization of PP against γ-irradiation increased, compared with neat PP.
The Benzoin Condensation Reaction under Different Ultrasonic Frequency and Phase Transfer Catalyst
Authors: Xiao Cong Li , Fan Tao , Gao Zhi Qi
Published: October 2013

This paper summarizes the method of benzoin condensation reaction, and studied the influence of benzoin yield under different ultrasonic frequency and phase transfer catalyst, Experiments prove that benzyltriethylammonium bromide is the best phase transfer catalyst in three catalysts and the benzoin yield increased with the increase of ultrasonic frequency.
Influence of Mineral Admixtures on Early-Age Autogenous Shrinkage of High-Performance Concrete
Authors: Xie Li
Published: October 2013

The influence rules of the mineral admixtures containing fly ash, ground slag and silica fume on the early-age autogenous shrinkage of high-performance concrete have been discussed in this paper. According to the research results, fly ash mixture can substantially decrease the early-age autogenous shrinkage of high-performance concrete, while the silica fume will increase the autogenous shrinkage. Meanwhile the influence of ground slag on autogenous shrinkage is related to its fineness and admixture amount. Generally, it is believed that when the fineness of the fly ash is higher than 4000cm2/g, the autogenous shrinkage will increase with the increasing admixture amount. The double admixture or multi-admixture of fly ash or ground slag is better for reducing the early-age autogenous shrinkage of concrete than the single-admixture. The early-age autogenous shrinkage of concrete occurs in distinctive linear dependence with the three types of mineral admixtures.
Reliability Analysis on Anti-Overturning Stability for Truck Crane
Authors: Zhao Rui Xue , Shan Zeng Hai , Ding Hong Gang , Zhang Hai Yan , Zhu Lei , Li Xue Feng
Published: October 2013

To more accurately learn reliability on anti-overturning stability for a truck crane, a parametric multi-body dynamics model is built in a dynamic software environment with overall key parameters as design variables. On this basis, stability criteria of this truck crane are established according to the working conditions and crane dynamics simulation results. After a truncated normal distribution sampling method is given for design variables which will effect on truck crane's stability, the reliability analysis of this truck crane is done via Monte Carlo method. The result indicates that the truck crane's stability reliability is 0.9998 in the most dangerous working condition. Analysis shows that the reliability calculation of truck crane anti-overturning stability is feasible using modern multi-body dynamics and Monte Carlo method, and the results are more accurate than conventional safety factor method.
Life Estimation of Hub Bearing Unit Based on Test Load Spectrum
Authors: Niu Rong Jun , Niu Chen , Dai Xiao Juan
Published: October 2013

In the paper, the steady-state steering dynamics model of the cars is firstly established. Then, three degree of freedom model of double row angle contact ball bearing is established. Based on the mathematical model and load spectrum, wheel hub bearing unit service life is calculated and estimated. The analysis results of the service life influencing factors have an important guiding significance for the design and use of hub bearing unit.
Finite Element Modeling and Strength Analysis of Boom System of Concrete Pump Truck
Authors: Tang Hong Bin , Ren Wu , Wang Shui
Published: October 2013

Concrete pump truck plays an important role in national economic development and infrastructure construction. The boom system is one of the most critical parts of concrete pump truck, so it is important to analysis the strength. In this paper, the research is on the concrete pump truck of 37 meters. The three-dimensional model is established in PRO/E. Then the model is imported to MSC.PATRAN / NASTRAN and the strength is analyzed. The results show that the maximum stress on the boom is far less than the yield limit of the material, the structure meet the strength requirements.
Research on Test-Bed of Durable Performance Experiment for Pilot Operated Directional Valve
Authors: Zhang Xi , Ni Lin , Zhou Hao , Yu Miao , Liu Yong Qi , Wang Da Long
Published: October 2013

The principle and design of the durable performance experiment test-bed for the pilot operated directional valve is introduced in this paper.
Experiment Study on Improving Lubrication of Gundrill under MQL by Shoulder Dub-Off Modification
Authors: Zhang Zhan Yang , Zhang Wei , He Feng Bao , Hu Jian Zhong
Published: October 2013

Coolant for gundrill under MQL is impermissible to be high pressure, large quantity, or direct emission on the interface. These restricts would be seriously unfavorable to lubrication. Experiments reveal that poor lubricating always appear on the hole periphery with dark burns on the hole wall. A prospective solution is to regulate the pressure distribution by modifying the dub-off structure. Its derivation is detailed in this paper. Its validity is demonstrated by practical experiments.
Study on Diffusive Wear and Hardness of Driller of Machining Deep Hole in Sheet
Authors: Xu Xiao Cun , Ning Qiu Li , Qiu Hui , Zheng Wen Bin , Lin Bing , Liu Fang Hui
Published: October 2013

The processing technology of machining deep hole in thin sheet is a kind of process using friction between driller and workpiece and plasticity of workpiece to form hole. The process is a kind of green mechanical processing technology. Studying green processing process in mechanical is becoming a development direction. In this paper, the new technological process to form deep hole on relative thin panel by friction heat not only saves material, but also saves man-hours, and the workpiece has a good piece of assembly. Because the processing technic is belong to local thermal processing, the diffusive wear and hardness of cemented carbide driller are studied by energy dispersive spectrum analysis energy dispersive spectrum analysis in this paper. The study results are useful to improve the life of driller and look for more appropriate machining parameters, and laid a foundation for further research on forming deep holes process on thin sheet metal by friction heat.
Study of Cell Electrowetting Characteristic on the Bio-Electrode Surface
Authors: Qin Ge , Ma Meng Die , Deng Ya Fei , Ming Ping Mei , Yin Yan Yi
Published: October 2013

In order to improve the operating effect of the bio-electrodes implanted in the deep brain of the human for the treatment of the neurological disorders, the characteristics of cell tissue fluid in the energized condition was studied in this paper. According to the principle and the influential factor of the electrowetting, the Young-Lippmanns equation was improved and an experiment of the electrical induced tissue fluid process was carried out. The experimental results showed that the transformation of the tissue fluid shape before and after electricity was consistent with the electrowetting, and the cell tissue fluid electrowetting was existed indeed. The cell spreading power was changed and the area of the cell tissue fluid was increased, and it indicated that the electrowetting of the tissue fluid is useful to the growth of the cell.
Experimental Study on Double-Piston Gas Prover
Authors: Chen Hui Yun , Cheng Jia , Huang Zhen Wei , Shen Wen Xin
Published: October 2013

Existing piston gas provers use a single piston cylinder as standard which replace the standard flow of gas by the piston moving at a constant speed. In order to solve the problem that the piston proverflow ceiling is limited by the volume of piston cylinder, we have developed a double-piston gas prover. Firstly, the article introduces the devices principle and mathematical model simply. Then it presents a series of experiments and experiments results of the device. Finally,the paper analyzes the uncertainty of the equipment. The results show that the double-piston gas prover is available.
Study on Rolling Element Bearing Fault Diagnosis Methods Based on Ensemble Empirical Mode Decomposition
Authors: Lv Zhong Liang , Liu Yi Lin , Han Xian Wu , Liu Min
Published: October 2013

For rotating machinery, a fault diagnosis method is proposed on the basis of the EEMD (Ensemle Emperical Mode Decomposition) and Correlation Coefficient Method. In the Vibration Signals and rotate speed of rotating machinery, the fault diagnosis method is achieved by Spectrum Analysis and real-time monitoring. The original signals are decomposed into several IMF components. Each IMF contains the local feature of the signal. Correlation coefficient method is used to select the appropriate Intrinsic Mode Function. Extract the fault feature through its envelope diagram. Experiment proves the feasibility of this method.
Mechanical and Physical Property Evaluations of Kevlar/Polyester Complex Nonwoven Fabrics
Authors: Lou Ching Wen , Hsing Wen Hao , Hsieh Chien Teng , Lin Jia Horng
Published: October 2013

Geotextiles made of nonwoven fabrics can be used in different fields, such as groynes, dams, seawalls, revetments, dunes, and hillsides, and the structures of nonwoven fabrics can be changed accordingly. This study explores the influence of different content of Kevlar fibers on the mechanical and physical properties of Kevlar/Polyester (PET) complex nonwoven fabrics. As specified in a nonwoven fabric manufacturing process Kevlar fibers and PET fibers are blended with various ratios to form Kevlar/PET complex nonwoven fabrics, which are then tested for tear strength, air permeability, and water permeability. The experiment results show that increasing Kevlar fibers reduces the tear strength, air permeability, and water permeability.
Synthesis of Polyurethane Dendrimers and Transfer Properties of Dye
Authors: Jia Jing Ru
Published: October 2013

The polyfunctional organic compounds 2- hydroxymethyl -1,4- butanediol (trihydric alcohol) and toluene diisocyanate -2, 4- diisocyanate (TDI) were taken as the raw materials in this study. A polyurethane dendrimer was synthesized by utilizing the difference in the reaction activity of two isocyanate groups of TDI at different temperatures. The polymerization process conditions were studied. The addition polymerization of para-position NCO groups occurred at 50 °C, and that of ortho NCO groups occurred at 90 °C. According to the structure of the dendrimer synthesized, methyl orange was used as the guest molecule. Consequently, the aqueous methyl orange showed a phase transfer. With the increase of dendrimer concentration, the transfer rate of methyl orange increased.
A Framewrok of Prototype Compressor Impeller Auto-Test System
Authors: Ma Ji Kai , Liu Zhi Feng
Published: October 2013

This paper presents a framework of prototype compressor impeller auto-test system. Two type performance test can be held in a unique pipeline layout. Work conditions are accuratly under control. Status data is acquired synchronously and precisely. Performance evaluation is accomplished efficient. This framework is proved to be highly available to improve traditional manual test method.
Research on the Insulation Performance of Sound-Isolating and Decoupled Tiles
Authors: Qian De Jin , Wang Xue Ren , Miao Xu Hong
Published: October 2013

The acoustic performance of sound-isolating and decoupled tiles is studied from macroscopic and microscopic. First, the sound absorption and reverse sound insulation performance of sound-isolating and decoupled tiles is studied based on laminated media; then the acoustic decoupling materials influence on acoustic radiation of double cylindrical shell underwater is studied, using a double-layer cylindrical structure of large-scale as experimental model .There are large amount of operating modes designed in this experiment, such as all laying, partial laying, laying and so on. The results show that sound-isolating and decoupled tiles not only have the effect of weakening the absorption of reflections, but also have reverse sound insulation effect, which increases as frequency increases; for single point mechanical vibration, the tiles can effectively inhibit vibration and sound radiation of high frequency in the double shell.
A New Kind of Infinite Series and its Applications on Neural Networks
Authors: Zhang Dai Yuan
Published: October 2013

A new important theorem for function expansion and a new infinite series based on the new expansion is proposed. Unlike constant derivatives at a point by Taylors expansion, the terms are functions associated with derivatives. The expansion generated by a function is not the form of polynomials, which is different from Taylors expansion. Some application examples are given to show that the region of convergence is much larger than that obtained by Taylor's Series. As a kind of application, a new learning algorithm based on the new expansion for training neural networks is also proposed. The weight functions using the new expansion are more suitable for training those patterns obtained by some rational problems.
The DES Algorithm Based on DSP Technology
Authors: Wang Hao , Chen Dian Ren , Sha Sha
Published: October 2013

This paper designed a kind of DES algorithm implementation based on DSP technology, application of TI company C54x series general DSP implementation mechanisms, with the introduction of DSP, this paper proposes a new DES algorithm implementation approaches, and the implementation scheme is presented. The method is simple and practical, the hardware resources is relatively less, high transmission efficiency , suitable for low data rate data encryption of small wireless data transmission system, can be widely used in various kinds of terminal positioning and small digital wireless receiving system.
Development of Electronic Control Unit for Air Suspension with Fuzzy Control
Authors: Chen Can
Published: October 2013

The paper is based on the one-quarter vehicle vibration model of air suspension system with auxiliary chamber and stiffness adjustment theory and control characteristic of air suspension are discussed. On the basis, fuzzy control theory without mathematical precise model was applied to design the air suspension controller, and then an electronic control unit for air suspension is developed.
Research on Control Strategy of Triple Bi-Directional DC/DC Converter
Authors: Chen Ming Xuan , Ren Yong Feng , Bu He , Gao Zhi Qiang , Xu Shao Hua
Published: October 2013

The bidirectional DC/DC converter is an important part for the power energy storage system,this paper adopts a triple bidirectional DC/DC converter in view of the features on super capacitor energy storage wide output voltage range. Establish the switch average model of bidirectional DC/DC equivalent model, put forward a double close-loop control strategy in view of charge and discharge conditions of the super capacitor, the triple bidirectional DC/DC simulation model based on super capacitor is built. The simulation results show that, the triple bidirectional DC/DC converter can effectively reduce the inductive current and current stress demand of the switch devices, improve the converter power grade. The control strategy can effectively control the super capacitor charge and discharge and it is suitable for application in the power energy storage system.
A Dynamic ID-Based Authentication Scheme Based on ECC for Telecare Medicine Information Systems
Authors: Xu Xin , Jin Zheng Ping , Zhang Hua , Zhu Ping
Published: October 2013

Recently, the telecare medical information system, which enables various healthcare delivery services, has been paid more and more attention in countries with aging populations. Using the telecare medical information system, it is possible to bring the advantages of telemedical directly into the patients home. At the same time, it faces some common security threats, thus, only authorized users should be granted the access to this system for the privacy concern. There are many authentication schemes studying protection of user medical information. Unfortunately, these schemes are still vulnerable to some common cyber attacks or has inefficient computational and communication cost. To remedy the weaknesses of these schemes, we propose an enhanced scheme based on elliptic curve cryptography to ensure necessary security and reduce computation load in this paper. By security analysis, we also demonstrate that our scheme is secure and efficient. Therefore, our scheme is suitable for telecare medical information system.
The Sinter Mixture Moisture Control System Based on Fuzzy PID Controller
Authors: Li Ting Gui , Gong Qin Hui
Published: October 2013

Because the sinter mixture moisture control system has time-varying, nonlinear and time-delay characteristics, it is difficult to establish its precise mathematical model. According to the defects that the conventional PID control in the fixed parameter is difficult to guarantee the system performance, this paper proposed the parameter self-tuning fuzzy PID controller which is used to the system. Based on the sintering furnace structural features and control performance requirements, the PID parameters are set by fuzzy logic reasoning. The actual operation results proved that the parameter self-tuning fuzzy PID controller improved more obviously the system performance than the original PID controller, and stabilized the sinter mixture moisture, and improved the sintering production condition and promoted the production capacity.
Platform of Image Acquisition and Processing Based on DSP and FPGA
Authors: Sun Rong Chun , Piao Yan
Published: October 2013

Real-time image acquisition and processing system is widely used. In order to realize the fast development of the relative project, an image acquisition and processing platform is presented. In the design, the DSP of TMS320C6416 is used as high-speed signal processor core, and the FPGA of XC3S700 is taken to offer embedded memory, and connecting DSP and CMOS image sensor. To reduce the burden of CPU, the EDMA technology is used to finish the image data transmission. The main function modules of the platform include acquisition, processing, USB communication, and VGA displaying. The platform can acquire image, display image and make some image processing operations such as geometry transform, orthographic transform, features extracting, target recognition and target tracking. Experiment results show that design of the image acquisition and processing system is reasonable, feasible and has some application value.
Analysis and Simulation System for Stepper Motor Controller
Authors: Sun Rong Chun , Li Ming Qiu
Published: October 2013

Stepper motors are wildly used in the many fields, such as CNC machine, motion robot, aeronautics and astronautics. To realize online precise measurement, error analysis and verification of control strategy, it is necessary to sample and analyze the driving signals of motors, and simulate mechanical motion in a computer. So a test, analysis and simulation system of stepper controllers was designed. Driving signals of stepper motors are synchronously sampled and analyzed by the unit of acquisition and analysis. A connecting Motherboard was used to link the various parts and finish the data transmission. The working states of motor divers under load were simulated by connecting motor driver to the simulation board of motor load. In the industrial computer, the control effects of multi-axis control system were displayed by 3D simulation. Test results show that the system is stable and reliable, and has a certain application value.
Prediction of the Theoretical Strain Limit for the Bulging of Sheet Metals by the Approximate Analytic Method
Authors: Gao Guang Fan , Sun Liang , Chao Jian Wei , Pang Ming Jun
Published: October 2013

For the bulging of sheet metals under hydraulic pressure on concave surface, constitutive relation, static equilibrium conditions, and approximate geometrical relation were discussed about the source of calculation error. Dimensionless deflection at the center of sheet was used as the intermediate variable, and a simple but efficient nomographic algorithm addressed for strain limit is presented in this paper. The results of the calculation were compared with that of the uniaxial tensile test, the bulge test, and the Finite Element Analysis (FEA). This method has the potential for industrial applications such as pressure forming, bulge test, and rupture disc manufacturing.
Glycophorin a Expression in HEL-92 Cells Treated with Silica Gel Particles
Authors: Keng Nien Tzu , Tsai Chang Shu , Chen Ya Yun , Kao Sheng Yu , Liu Wei Chung
Published: October 2013

In recent years, silica-gel-containing materials have formed components of biomaterials that can contact stem cells. However, the effects of silica gel particles on erythrogenesis have not been well-established. In this study, we evaluated the erythrogenic effects of silica gel particles on bone marrow cells and stromal cells pretreated with N-acetyl-L-cysteine (NAC) for 1 h prior to exposure to the silica gel particles. Our results showed that the numbers of erythrocytes in the bone marrow cells increased considerably following treatment with the silica gel particles. In addition, the expression of glycophorin A, an erythroid marker, was upregulated in the HEL-92 cells compared with the control cells. However, NAC pretreatment inhibited erythrogenic effects. Our study results suggest that silica gel particles might stimulate the differentiation of bone marrow cells to erythrocytes by increasing the generation of reactive oxygen species.
Extraction of Modal Parameters from Structural Acoustical Responses
Authors: Qin Xian Rong , Nie Yu , Hu Jian Jun , Zhang Qing , Sun Yuan Tao
Published: October 2013

A method to identify modal parameters from structural acoustical signals was proposed by a combination of empirical model decomposition (EMD) and stochastic subspace identification (SSI). Firstly, several intrinsic mode functions (IMF) were obtained with EMD, then the data obtained from the EMD was used as the input of the SSI to identify the modal parameters. Taking a wheel loader as an example, the acoustical signals in the loader cab were recorded through field tests, and were employed to identify the fundamental modal frequencies. The resultant frequencies show reasonable consistency with those by finite element analysis, and therefore prove the feasibility of the proposed method, which means that acoustical signals could be utilized as a useful supplement of the structural vibration responses in the modal parameter identification.
Design and Development of the Short Message System on the Campus Network
Authors: Tian Hong , Tian Hua
Published: October 2013

The short message service (SMS) has been put into the application well in many professional areas, and how to apply it in the instruction management is a subject allowing the personnel working at educational technology area to solve. This paper analyzes the constitution of short messages and describes the design of the short message service platform on the campus network based on the B/S structure, and presents the method of how to carry out the short message service platform based on the WEB in which we can integrate the information releasing and order function to play the information.
Study on Improved Multi-Objective Adaptive Artificial Immune Genetic Algorithm
Authors: Hu Zhen Yun , Zhang Wei , Chen Chen
Published: October 2013

In this paper, the traditional NSGA model in solving multi-objective optimization problem exists the computational complexity, lack of elitism and the need to set shared radius etc. defects. we use the advantage of the artificial immune system, such as good generalization, self-organization and so on, propose a improved multi-objective adaptive artificial immune genetic algorithm that by the use of fast non-dominated sorting and crowding distance, reduces the algorithm complexity and improves its stability and versatility; utilizes the immune memory cells to optimize the population quality, accelerate the antibody reaction speed and raise the optimize efficiency; updates the populations by the non-inferior rank and crowding distance to improve the algorithm function of the search. This paper elaborates the algorithm steps in detail and verifies this algorithm. Through the three different dimensions of test functions, the simulation results show that this algorithm is effective and feasible.
Design and Beam Quality Analysis of Reflective Telescopes through Diffraction Effects and Third Order Aberrations
Authors: Lakshmi K.Shantha , Sudhakar R.
Published: October 2013

In the design of inter-satellite laser communication terminal, the diffraction effects are raised in the optical system, when we operate at the wavelength of 1550nm. This is because of the line of sight stabilization in space domain. In this paper, we designed various cassgrains which operates at aforementioned wavelength to overcome those effects. In addition, we analyzed the design as a linear beam expander to obtain a magnified beam for a long haul free space transmission. Then the beam quality is evaluated through Point Spread Function (PSF), Modulation Transfer Function (MTF), Wave front, Distortion, Energy plots & third order aberrations. Finally, we study the designs of Schmidt and Houghton type cassgrains out of which one is opted for Inter-satellite Laser communication.
An Automatic Assembly Technology for Perforated Discs Based on Contour Optimized Hough Circle Transform
Authors: Shang Ce , Tao Guo Liang
Published: October 2013

Aiming at the low efficiency of handwork and high labor intensity, an automatic solution for perforated discs assembly is developed based on computer vision. This technology consists of the processes of material feeding, parts handling, circle detecting and assembling. The mechatronic structure includes the pneumatic elements and electric actuators that controlled by PLC and stepper motor drivers. This method has solved the problem of the large cost of human force since this product has a big industrial production. Meanwhile, a contour optimized Hough circle transform (CHCT) is proposed. It can overcome the standard Hough circle transform (HCT) s disadvantages, such as redundant calculation and probability of failures. It enhances the reliability in order to satisfy the demand of industrial automatic production. The image processing takes only about 60ms and reaches 100% success rate with a small detection error. This method also has the generality for the similar assembly system based on machine vision.
Innovation Research on Medium and Low-Tech Traditional Industry
Authors: Tian Heng
Published: October 2013

As the resource advantage is gradually weakened, business situation of small and medium-sized enterprises (SMEs) engaged in medium and low-tech traditional industries is becoming more seriously. Industrial innovation and upgrading shall be conducted in order to achieve the sustainable development of traditional industries. Given the characteristic that medium and low-tech traditional enterprises rely on progressive innovation from the external organizations including the government, other enterprises and research institutes, etc., the enterprises should improve their strategic position in the industrial value chain, and change the business mode and growth pattern jointly from the aspects of technical innovation, system innovation, management innovation and cultural innovation, etc., to achieve the transformation from resource advantage to innovation advantage.