bluuebunny/crossref_metadata_2025 huggingface dataset:
The Development of the GAT High Accuracy Magnetic Suspension Gyro Station and the Application on the Underground Engineering
Authors: Gong Yun , Yang Zhi Qiang , Shi Zhen
Published: February 2012

The GAT high accuracy gyro Station has high accuracy, automatic orientation, which is developed by Chang’an University Survey and Spatial Information Research Institute and the China Aerospace Times Electronics Corp. It has the domestic independent intellectual property rights The GATA high accuracy Gyro station's main body adopts the space technology .It has many advantages such as high accuracy, automatic, rapid orientation, safe explosion-proof and so on. The GAT high accuracy Gyro station has carried on massive location experiments, this instrument carried on the project examples has confirmed successively. Particularly in the verification process, compared to the Gyromat2000 high-precision Station produced in Germany, which is internationally recognized the best, the result shows that the GAT in finding north and accuracy indicators is as same as Gyromat2000, and is better in self-checking, automatic data processing, the erroneous evaluation and in operation contact surface's friendliness than Gyromat2000, but the price of it is lower than Gyromat2000. Therefore, using the GAT high accuracy gyro station will bring the remarkable economic and social benefits.
Development of a Vertical Axis Pipe Flow Generator with Swing Gates
Authors: Wang Song Hao , Corado Edgar J. Tobias
Published: February 2012

This study aims to develop an innovative Generator that can be installed in pipelines with ease or even without stopping the fluid flow under certain conditions. The turbine design was the major focus and modern engineering tools such as 3D CAD software and Rapid Prototyping technology were utilized during the development. Designs of different turbine structures were tested and the turbine with swing gates seems to be the best choice in this application. Experiments on parameters such as rotational velocity and voltages were performed with satisfactory results.
SRAP Pre-Stressed Reinforcing Techniques for Concrete Structures
Authors: Hu Shao Wei
Published: February 2012

A large number of Concrete Structures need be reinforced in china. So as new rehabilitation and reinforcing techniques, the SRAP approaches were introduced in this paper, and the SR strengthens materials and AP modified resin mortars were combined with pre-stressed method in SRAP approaches. First, nowadays structure distress characteristics were presented and lots of reinforcing techniques were compared and analyzed in this paper. Based on the SRAP advantages such as the concrete crack rehabilitation and its used material innocuity and so on, the analysis results show that the SRAP are feasible and reasonable to guide the design and operation of structure rehabilitation and reinforcement, The SRAP construction measures and expected reinforcing effects were given out in this paper. The results shows that SRAP approaches with numerical simulation is feasible to guide structure rehabilitation and reinforcement，and the proposed SRAP engineering measures are effective for preventing structure local fracturing and satisfaction of rehabilitation and reinforcement targets.
Intelligent Sunshading Control System Based on Lonworks Fieldbus
Authors: Yan Fei , Li Ming Jian
Published: February 2012

To make full and reasonable use of natural light in civil buildings has an important meaning to the construction of green buildings. This paper has designed an intelligent sunshading control system based on Lonworks fieldbus. Based on the analysis on the sunshading control needs of civil buildings, this paper has proposed a system framework based on Lonworks fieldbus, and has designed control nodes of intelligent curtains from the two aspects of hardware nodes and control software. At last, this paper has also designed the host computer monitoring software.
BSC Application in the Performance Management of Service-Oriented Manufacturing Enterprises
Authors: Zhang Tie Zhu , Huang Yun
Published: February 2012

This paper which set service-oriented manufacturing enterprises as the research object use the basic idea of the Balanced Scorecard designing performance evaluation system of service-oriented manufacturing enterprises. According to the organizational vision and strategy, it determined the strategic goal, formed a set of strategy map of service-oriented manufacturing enterprises and provided managers a clear understanding of the basis of enterprises performance current level. It benefited managers understanding the reason of performance level for digging it, and long-term development of enterprises.
A Service Component Model for Semiconductor Test Equipment
Authors: Jeong Hwa Young , Kim Yoon Ho
Published: February 2012

Web service is a trend of new technology that it is able to support function to user over the internet. That is, user can operate and process the system, and set up values to the machine using the internet at the distance location. User doesn’t have to have any database for their works in the web service environment. Therefore, the development method has changing from traditional process, it needs mechanical parts with stand-only computer and no network, to service based system with network. In this paper, we propose a service component model for semiconductor test equipment, IC test handler. This model constructs to compose the software component, business logic, as a service.
Computer-Aided Optimization of a 5.8 GHz ETC Receiver Front-End Design Using Memetic Algorithm
Authors: Jiang Lai , Yu Hang , Li Yan , Yin Yan , Li Zhan
Published: February 2012

Systematic level design and optimization of a Radio Frequency (RF) receiver is a multi-dimensional problem and it is usually an arduous and experience-based work because of the trade-off between various system parameters. In the mean while, co-operated with Genetic Algorithm (GA) and local search, Memetic Algorithm (MA) gradually becomes popular to solve multi-dimensional optimization problems, and it can be an efficient method for computer-aided design of RF receivers. In this paper, the MA method was adopted to aid the design of a 5.8 GHz RF receiver front-end. The transfer function for the signal-to-noise ratio at the front-end output (SNRout) was first derived based on the gain, noise figure and inter-modulation product of each individual circuit component, and the transfer function was then used as the required fitness function for the MA method. The efficacy of the proposed method was validated by ADS simulations.
A Neural Network Model for Simulating Cloth Texture Deformation
Authors: Zhao Zhi Hong
Published: February 2012

This study describes a method to simulate cloth texture deformation using a neural network model. The cloth texture may be represented by its texture colors, positions and its topological structures. In addition, the relationship between the texture colors can be deduced based on the smooth texture and the two and three dimensional texture deformation are correspondingly concerned. A multilayered single direction neural network model is adopted to numerically represent the cloth texture for the purpose of speeding up the simulation. The color values of the points on the cloth deformed curved surface can be calculated with such neural network model. The experimental results show that such method is efficient and executable for the regularized texture deformation.
The Wet Clutch Pressure Control of Dual Clutch Transmission Based on FCMAC
Authors: Wang Yin Shu , Cheng Xiu Sheng , Song Yong Dao , Han Peng
Published: February 2012

A wet clutch pressure control system of dual clutch transmission was presented in this paper, and clutch pressure intelligent control arithmetic based on FCMAC(Fuzzy Cerebellar Model Articulation Controller) was designed to realize accracy control of clutch pressure. The intelligent control system was verified by experiment, and the rusults showed that the clutch intelligent control algorithm with FCMAC had good adaptive ability and high precision. It could meet the requirements of the clutch peressure contol of DCT.
Study on X-Voronoi for Heterogeneous Wireless Sensor Networks
Authors: Wang Xiao Long , Liu Ming , Fang Qian Sheng , Ge Yun Jian
Published: February 2012

Coverage has recently emerged as a premier research topic. More and more research focused on coverage in wireless sensor networks using Voronoi. While most existing research efforts in the area of wireless sensor networks have focused on networks with nodes which have the same capabilities. But for Heterogeneous Wireless Sensor Networks (HWSN), which is more universal, there is a lack of study for using Voronoi solves the problem of coverage. In this paper we address on X-Voronoi for solve coverage in heterogeneous networks. Simulations confirm that the X-Voronoi is able to solve the problem of analyzing coverage performance in heterogeneous networks. To our knowledge, this is the first study on Voronoi for Heterogeneous Wireless Sensor Networks.
Theoretical and Experimental Research on the Features of Cutting Force in Rotary Ultrasonic Face Milling of K9 Glass
Authors: Zhang Cheng Long , Feng Ping Fa , Zhang Jian Fu , Wu Zhi Jun , Yu Ding Wen
Published: February 2012

This study introduces rotary ultrasonic face milling (RUFM) process into flat surface machining of K9 glass. The effective cutting velocity, and cutting length of single diamond particle were presented in RUFM. The model of material removal for RUFM was developed through examining indentation fracture mechanics theory and material removal characteristics of brittle materials, and analyzing kinematics properties of diamond grits in RUFM. With a view of comparative researches, the cutting force of RUFM and diamond milling of K9 glass are compared. The experimental results tell that the relationship between the cutting depth (dc) and the ultrasonic amplitude (A) of the cutter has remarkable effects on cutting force, which was also discussed in the kinematic characteristics analysis section. The results also show that RUFM process can significantly reduce cutting force and the effects of process variable changes on cutting force in RUFM are weaker as dc is smaller than A. However, the reduction trends of the cutting forces in RUFM are very small and even increased in some process conditions, as dc is larger than A. It suggests that the cutting depth should be smaller than the ultrasonic amplitude of the cutter with RUFM process to obtain better processing performance.
Strengthening of Ceramic Coated Steel by Laser Quenching
Authors: Tanabe Hirotaka , Ogawa Keiji , Saraie Takuya , Gotoh Mitsuhiro , Hagino Hideki , Yamaguchi Takuto
Published: February 2012

In order to investigate the effectiveness of laser quenching for ceramic coated steels, 2 kinds of ceramic coated specimens of CrAlN and TiAlN were prepared, and the laser quenching experiments under various irradiation conditions were carried out. The influence of laser irradiation on the substrate hardness, film hardness and adhesive strength were investigated. Because of the high heat absorption of CrAlN and TiAlN films when compared to TiN, it was possible to quench the substrate effectively without any absorbent material for these specimens, although an absorbent was required for TiN coated specimen. The quenched area on the cross section of the substrate of CrAlN coated specimen was larger than that of TiAlN coated specimen. The difference of the quenched area could be explained by the difference of the heat absorption of these films. It was also possible to improve the adhesive strength of these films by laser irradiation. Although the film hardness decreased considerably by furnace quenching for ceramic coated steels, film hardness did not decrease by laser irradiation. It was concluded that the improvement of the adhesive strength and substrate hardness without the decrease of film hardness was achieved by laser quenching for CrAlN and TiAlN coated specimens.
Effect of Cold Working and Annealing Condition on Scale Formation of AISI 4140 Steel
Authors: Butsabong Sujitra , Jirapattarasilp Komson
Published: February 2012

The objective of this research was to investigate cold work of alloy steel which was affected on scale in annealing process. Material used in the experiment was alloy steel, AISI 4140, that widely used in automotive industry and it have been annealing after cold forming operation. The experiment was conducted on four level of percentage of cold work, 0% - 30%. The annealing temperature was set up at three levels between 845– 900°C and three type of controlled atmosphere in annealing consist of normal atmosphere and reduction atmosphere with two inert gas, nitrogen and argon. The result was indicated that percentage of cold work affected to formation of scale, high percentage of cold work, more percent weight of scale. Furthermore, the controlled atmosphere in annealing with nitrogen can be producing less scale surface than reduction with argon and normal condition, respectively. Moreover, the scale was a few affected by temperature of heat treatment in annealing. High temperature could be produced more scale surface than low temperature in all percentage of cold work
A Resource Allocation Model of Logistics Services Supply Chain for Multi-Agent Based on Ant Colony Algorithm
Authors: Yang Bin , Li Chun Xiao , Zhang Yi Bing , Kong Wei
Published: February 2012

In the logistics service supply chain based on Multi-Agent system, it is a combinatorial optimization problem possessing highly complexity and dynamic uncertainty to allocate the resources of various logistics companies. Therefore, in this paper, ant colony algorithm is introduced to the Multi-Agent System, and we establish a resource allocation model based on ant colony algorithm for logistics service supply chain in view of Multi-Agent. In the model, ants are replaced by agents. At the end, the paper realizes the optimization of logistics services supply chain.
Development and Application of Activating Fluxes in TIG Welding
Authors: Fu Qiang
Published: February 2012

The developing and application of activating flux which can dramatically increase the depth of weld bead penetration and improve the properties of weld bead using fusion welding process was summarized. The mechanisms of the activating flux increasing the depth of weld bead penetration especially the theories of arc constriction and the change of temperature gradient of surface tension were analyzed. The research work indicates that the activating flux will be used in more welding process to obtain deep weld penetration, high productivity, low deformation and excellent joint mechanical properties.
Comparative Simulation Research between Rigid Body and Flexible Body for Double-Gear Parallel Driving Systems
Authors: Wang Qi , Deng Hua , Xu Zhen
Published: February 2012

In this paper , on the platform of Adams ,the model neutral files(MNF) of the double-gear parallel driving system for the forging manipulator were created by utilizing the FEA technology，and its virtual prototype of rigid body and flexible body were established.Through defined same motion and load by step function，dynamic simulation was analyzed.Comparing the results such as angular velocity and gear meshing force of each other，studies suggest that: to treat the transmission system as rigid body can fully meet the research requirement for load balancing.
Simulation Research for Strip Shearing Section Level Distribution
Authors: Chen Bing , Liu Shu Hao , Yang Jing
Published: February 2012

In view of the generally phenomenon of section burr in of disk shearing, through using the theory analysis combined with FEA software simulation tools in article, exploring the relationship between cutting edge coincidence degree, gap shear process. And take the" taking hierarchical method " get the relationship of the coincidence degree, clearance and strip shearing section level proportion on the factors on shear technology. Finally using the theoretical knowledge demonstrates the accuracy of simulation results.
A New Dynamic Test Method of Fiber Optic Gyroscope
Authors: Li Xu You , Zhang Na
Published: February 2012

The sway motion of ships follows sine law. Therefore, it needs high dynamic performance of fiber optic gyroscope (FOG) to meet the serious working environment. A new test method was introduced to make reasonable assessment on the dynamic performance of FOG. The principle of this new test method was that the sine wave provided by the IP core in FPGA was superimposed on the digital ladder to simulate the input signal of sway motion. It could be proved that the serial of sine signal, which was generated by this method, was equivalent to the external input signal. Moreover, the dynamic error model of FOG was established to provide the theory of dynamic test. The results of dynamic test of FOG indicated that the dynamic error did not have divergent trends, the system parameters set was reasonable and the FOG system was stable. It also can be seen that dynamic error of FOG was increased with the increasing of sine wave amplitude, which was accord with the actual situation. The new dynamic test method of FOG was verified.
Design & Research of a Continuous Jack-Up System for Large Structure Object
Authors: Zhao Jia Qi , Zhang Qing , Zhao Si Hua
Published: February 2012

Nowadays, in order to do research on the petroleum in blue water, the demand of jack-up system for large structure object is higher and higher, but the jack-up system in our country is hard to meet this demand. The system mentioned in this paper can make great contributions to jacking large structure object up. In this paper the lifting theory of jack-up system is introduced in detail. The design and research of the continuous jack-up system is also mentioned in this paper. Moreover, finite element analysis is the core of this paper. The finite element analysis of jack-up system in each working condition confirms that the continuous jack-up system is doable. The continuous jack-up system for large structure object is of great significance in blue water petroleum industry.
The Effect of Vetrical Milling on Finished Surface of Polymethyl-Methacrylate Sheet
Authors: Obma Saming , Jirapattarasilp Komson
Published: February 2012

The aim of this research was to vertical milling, which was affected on finished surface of Polymethyl-methacrylate (PMMA). The experiment was done by CNC vertical milling with four flutes High-Speed Steel milling cutter. The factorial design was applied and factors were consisted of three levels of cutting speed and feed rate, including of two direction of milling; up-cut and down cut. The results revealed that factors affected on face surface roughness were feed rate and direction of milling. On the other hand, cutting speed was not main affected factor. Moreover, cutting speed and feed rate were the main effect on side surface finish. Also, interaction between direction of milling with cutting speed and cutting speed with feed would be affect to side surface too. The effect of three factors on surface finish were analyzed and discussed.
A New Optimized Method of Excitation Signal for Closed-Loop Identification of Power System Based on Ambient Signals
Authors: Yu Miao , Lu Chao
Published: February 2012

Excitation signal optimization is an important part in the power system identification based on ambient signals. An adaptive discrete Kalman filter method is proposed to select an optimal signal for closed-loop identification in this paper. This method is carried out through the use of the measurement innovation sequence as piecewise stationary process inside an estimation window. It also overcomes the shortcomings of relying on the correctness of the mathematical and statistical models excessively. The feature of random load changing in power system is fully considered in this method. Then under the energy constraints of input and output signals, this method can be used to solve the excitation signal which satisfies the performance of power system and the noise covariance estimation matrices are acquired. By using this method, the optimal identification model can be obtained. Simulation results show the effective performance of the proposed method. Compared with other methods, the quality of the closed-loop identification model based on ambient signals is improved by using the excitation signal optimal method proposed in this paper.
Design and Implementation of Container Terminal 3D Simulation Model Repository
Authors: Lu Hou Jun , Zhen Hui Qiang , Chang Dao Fang
Published: February 2012

3D visualization simulation is the important research method of port logistic production system, whereas the lack of uniform standard and interface of 3D simulation model, it is very difficult to share the simulation model resource, and which caused modeling repeatedly and developing efficiency lowly. Container terminal 3D simulation model repository should be considered as the key factor of solving the problems of developing low-efficiency and model no reuse of logistic system. This paper classified the model resources required by container terminal 3D simulation, explained the functions of container terminal 3D simulation model repository, and gave its framework. Finally, we discussed the key techniques to implement the container terminal 3D simulation model repository.
The Design and Analysis of Universal Inertial Switch Based MEMS
Authors: Hao Yong Ping , Bao Li Ya , Gu Shuang Xi
Published: February 2012

In this paper, a novel MEMS inertial switch is designed and characterized for the purpose of crash sensing for ammunition systems in which high-speed response is required for triggering the detonator. In order to keep the same sensitivity in different direction, the structure of an annular proof-mass suspended by four serpentine flexures is designed. The switch can be integrated with electronics, fast-acting，and lack of a requirement for continuous power, and can be used in a wide area. The motion of the inertial switch is analyzed by dynamic simulation under the 700g threshold acceleration in y direction, the simulation results show that the response time is 0.142ms and the contact time of the switch is about 5 , it illustrates that the response time is short enough and the impact time satisfy the ask. The von-mises stress of the structure is calculate, the maximum stress occurs in the serpentine flexures, the value is 60.61 MPa, much less than the yield strength of the silicon, the switch can be used time after time.
The Field Scale Investigation of Water Coning Phenomenon
Authors: Baderestani Hossein , Amirzadeh Heshmat , Banavi Javad
Published: February 2012

The study of water coning phenomenon has gained wide interest in petroleum industry during the last few decades and poses a challenge for hydrocarbon production. The simultaneous production of water and oil causes lots of negative effects on the reservoir performance such as significant reduction in oil recovery, corrosion, the cost of oil and water separation, environmental pollutions, and etc. Hence investigation of water coning and finding some solutions seems highly noticeable. For that, we model one of the Norwegian reservoirs which encounters water coning problem by using a black oil simulator. Additionally, since it is not well-matched with its observation data, by the use of SimOpt software, a reasonable match between the simulated and observed data were achieved. After achieving a reasonable match between the observed and simulated data in SimOpt, by the use of ECLIPSE 100 software various scenarios are investigated. Controlling the oil production rate, controlling the field water cut, and the effect of different well completions are different factors whose influences over the water coning phenomenon are examined. Finally, the following solutions are suggested: the varied production rate, field water cut in the range of 0.1 to 0.2, and the open-hole completion.
The Research of Intelligent Vehicles Mean Shift Based on Difference Algorithm
Authors: Tan Lian , Dang Pei , Luo Qiang
Published: February 2012

The workflow of mean shift has been put forward which is aimed at the intelligent vehicles. To select the logical parameter, the simulation of the formwork and the selection of search region is made; and select the most suitable algorithm of the three related algorithms through the simulation analysis; in addition, to achieve the binary image by difference and denoising, to obtain the energy distribution of the image by calculating the gravity centre of the projection, then proceed to the next step, to gain the target location. So the feasibility of the algorithm can be validated by the test, and the good results are obtained.
Evaluation of 3D-Traffic Accessibility Based on Space Syntax: A Case Study of Xi'an Subways
Authors: Zhou Fang Xiao , Li Chang Hua
Published: February 2012

With the rapid development of urbanization in China, many cities begin to build subway to relieve the increasing traffic pressure. How to evaluate effect of subway on existing urban traffic system interests urban planners. Space Syntax is the most widely used theory for calculating accessibility measures. However, as the basis model of space syntax, axial-map is only aimed at 2D traffic system, not suitable for 3D situation. Based on natural-street map, a method is proposed which treats stations as junctions between subway and streets and rebuilds relation matrix to calculate accessibility. Using the method, we analyze a case study of Xi’an city in china. It is found out that subway can change accessibility to some extent depended on routine of subway and site of station, which implies it reasonable to layout subway along streets with high integration.
The Research of Forklift Control System Based on Ultracapacitor
Authors: Wei Hong Ling , Wu Zhang Wei
Published: February 2012

The forklift is the research object, for the reason of its large application quantities, high fuel consumption and bad emission. It is the important research direction of the energy saving of forklift to improve the working state of engine by means of hybrid technology. Based on the study of energy distribution, the schemes of parallel and series hybrid systems are evaluated, according to their fuel consumption, equipped power of working components and working parameters. The parallel hybrid system with the capacitor as energy accumulator and the project of energy regeneration with hydraulic motors are explored in detail, combining theoretical analysis. Finally, the energy regeneration,with hydraulic motor, is presented and synthetically evaluated.
The Workshop Information Management for Underwater Production Facilities
Authors: Zhao Si Hua , Zhang Qing , Zhao Jia Qi
Published: February 2012

As an important tool of workshop information management, workshop production management system has improved the production efficiency, management level and market competitiveness greatly. Based on the characteristics of deep-water production facilities a related workshop management system has been developed in this paper. The way of workshop data acquisition is presented in detail, bar coding technology is applied in the system to facilitate the information collection of workshop. The workshop information model is probably analyzed, describing the flower of information and material in the workshop visually. In addition, the general structure and modules of the system that is divided into eight modules, such as the planning information management, production equipment management and workshop statistic is described. The structure of the software which is designed in Browser/Server model and information management database is also emphatically studied. The workshop production management system has become a bridge between the ERP at the higher level and the shop floor at the lower level, achieving the information exchanged and shared quickly, then making the workshop production process transparency. Through this system, director can track semi-finished parts in the production line, supervise the production equipment operation conditions, promise the worker in place timely and arrange production plan, manage the production process flexibly.
Experimental Investigation of Mechanical Characteristics of Parallel Polygonal Line Groove Multilayer Winding Drum
Authors: Hu Yong , Hu Zhi Hui , Hu Ji Quan
Published: February 2012

The characteristics and mechanism of parallel polygonal line groove multilayer winding drum were investigated by an experimental approach. Strain-electricity method was used to test the stress of the cylinder body and the end plates of the drum. Experimental results show that the distribution of the axial bending stress on cylinder body is symmetric in the radial symmetry section. The largest axial bending stress appears in the symmetry plane; however the minimum stress is in the sections close to the end plates on both sides. The axial bending stress of the cylinder body is found to grow with the number of layers wrapped around the drum increasing, while the increment of the stress decreases. When the layer number of the wire rope increases from 4 to 5, the increment of the stress is less than 3 [MPa].
Design and Implementation of Shortest Travel Path Searching Based on Improved Dijkstra Algorithm
Authors: Mo Tai Ping , Zhao Hui Huang , Mo Wei
Published: February 2012

The existing transportation service system in public travel route can not satisfy the people's actual travel need because of various technologies reasons. In our study, we set the tourist attractions as a vertex, and simplified the traditional algorithm for complex network computing. Aim to improve the disadvantage of tradition Dijkstra algorithm, an improve algorithm was proposed to improve the path search efficiency. Then the improved Dijkstra algorithm was applied to tourism path search. The experimental results have illustrated that the improved Dijkstra algorithm can accomplish a better result and improve path search efficiency.
Influence of Machining Parameters and Pre-Stress on Residual Stress of Pre-Stress Hard Turning in 40Cr Steel
Authors: He Ai Dong , Ye Bang Yan , Qin Meng Yang
Published: February 2012

Machined residual stress is an important index in machining quality, and pre-stress cutting is a process which can increase the residual compressive stress on machined surfaces. This paper investigated the effect of machining parameters and pre-stress on residual stress of 40Cr steel by orthogonal experiment. The experiment results also showed that pre-stress could increase the residual compressive stress effectively, and it had obvious significance for residual stress than those significances of machining parameters; ap had more obvious affect on the residual stress than vc and f have, and residual compressive stress decreased with the increase of ap, vc and f. A prediction formula for residual stress of pre-stress hard turning was obtained from the experiment results and it was verified reliable by other experiment.
Modern Furniture Color Image Based on Eye Tracking
Authors: Xu Ji Feng , Zhang Han Ning
Published: February 2012

The relationship between modern furniture color image and eye tracking has been of interest to academics and practitioners for many years. We propose and develop a new view and method exploring these connections, utilizing data from a survey of 31 testees’ eye tracking observed value. Using Tobii X120 eye tracker to analyze eye movement to furniture samples in different hue and tones colors, we highlight the relative importance of the effect of furniture color on human vision system and show that the connections between furniture color features with color image.
Dynamic Model of the 6-DOF Parallel Manipulator Control Using Lagrangian Equation
Authors: Vongvit Rattawut , Zhu Hai Tao
Published: February 2012

This paper presents the control of the 6-DOF parallel manipulator using Lagrangian equation. The 6-DOF parallel manipulator are composed of fix base and moveable platform are couple by the actuators. The dynamic equations express by Lagrangian equation, the structure of the 6-DOF parallel manipulator and kinematics and are explains in this paper. The 6-DOF parallel manipulator using Lagrangian equation are accurate and good ability.
On the Practical Consideration of Source Localization Using the Location Template Matching (LTM) with Multiple Sensors
Authors: Yang Hong Jun , Lee Sang Kwon , Shin Ki Hong
Published: February 2012

The Location Template Matching (LTM) method is known to be simple and straightforward to use for source localization problem. We have found that the method is not as simple as one might think, but there are many practical aspects that must be carefully considered. The most important parameter is the spatial resolution of the pre-defined reference points. The other parameters are the sampling rate, the time alignment between the signals, the frequency bandwidth of a signal, and the length of data. It is also shown that the accuracy of the LTM method can be improved if a couple of more sensors are used. This paper discusses these practical considerations in detail for the purpose of providing a proper guidance of using the LTM method.
Three-Dimensional Discrete Element Simulations of Round Hopper in Thermal Power Plant
Authors: He Qing , Du Dong Mei , Wang Ye , He Zi Rui
Published: February 2012

Three-dimensional discrete element process was adopted to simulate the discharge of hopper and the change of flow pattern of particles and dynamic lateral pressure of walls were analyzed in process of discharge. The results showed that three-dimensional discrete element simulation can obtain much more information. Discrete element method can simulate dynamic discharge problems. The dynamic force of vertical direction is much greater than dynamic force of horizontal direction in the process of discharge in the cone section of hopper. When the stored materials in hopper generate arches in the course of discharge, the inertia of floating stored materials will make the pressure of particles above arches hoist, so the walls of hopper may crack.
The Liquid Level Control Based on New Two-Degree-of-Freedom IMC-PID
Authors: Wu Wen Jin , Jiang Shan He , Jiang Ju Lang
Published: February 2012

For the cascade control system of double water tanks liquid level ,the water tanks model is established .The new two-degree-of-freedom IMC-PID regulator is designed by new internal model control(IMC) theory and it is the main controller of the cascade control system . The system performance is directly related to the two adjustable parameters of regulator. By adjusting the two parameters, very good dynamic response performance of both the setting value tracking and anti-interference characteristics can be achieved simultaneously. Simulation results have shown the validity of the proposed control scheme compared with the conventional PID regulator and the old two-degree-of-freedom IMC-PID regulator.
Mine Coal and Gas Outburst Prediction Area
Authors: Li Qing
Published: February 2012

In this paper, based on geological power division method of qidong well find out fault block coal mine, determined the change law of the ground stress coal mine, combining geological structure distribution situation, distribution, coal seam gas igneous rock and the pressure distribution rule, the structure of coal change situation analysis, USES the many factors in wanhei coal and electricity group coal mine coal layer 3 qidong well of coal and gas outburst prediction area, for mine power phenomenon regional prediction has provided a new way and method.
Road Background Generation and Update Method Based on Segment Statistics
Authors: Li Jing , Liu Huai Yu , Hong Liu Rong
Published: February 2012

A road background generation and update method that is based on segment statistics is put forward. It is to generate background by image segmentation and statistic of the gray average in each gray segment interval. It realizes background update with the measurement features of adopting the gray average in each segment and the standard deviation, detects and eliminates the stationary vehicles in the background through complexity comparison of the edge. The experiment shows that the generated background has good quality, and can accurately detect and update the area of stationary vehicles in the background.
The PLC System Design of the Floating Cleaning Machine
Authors: Lu Chun Hui
Published: February 2012

The floating is increasing in rivers and lakes in China now. It often appeared in few days when seasonal flood coming or accidental time as a serious question in circumstance, especially gave trouble to peoples who work in reservoirs. Many floating blocked the lattice will cause water level up. This design mainly include analysis the characteristics of all types machine, choose the PLC system and design the control system of rotary cleaning machine. It includes the trapezoid diagram procedure; the exterior I/O connects the line diagram. The machine can work efficiency when it rolling behind the lattice as no people control. All PLC control system safety successfully passed check in lab.
Study of a Method for Improving the Anti-Lock Brake System of Electric Vehicle
Authors: Chu Liang , Yao Liang , Zhao Zi Liang , Wei Wen Ruo , Zhang Yong Sheng
Published: February 2012

The Anti-lock Braking System (ABS) of Electric Vehicle (EV) is improved in this paper. Based on the research of system structure and motor, a new method is proposed to adjust the threshold and coordinate the motor braking force with the friction braking force. So the traditional threshold control algorithm of ABS is improved for the EV. The simulation results based on the MATLAB/Simulink model indicate that the improved ABS can keep the wheels in the stability region and decrease the motor regenerative braking force as soon as possible. The balance between brake safety and energy recovery is achieved through this method.
Mining Evolutionary Link Strength for Information Diffusion Modeling in Online Social Networks
Authors: Liang Zheng , Xu Bing Ying , Jia Yan , Zhou Bin
Published: February 2012

In this paper, we consider the problem of evolutionary link strength mining for information diffusion modeling and predicting. Most exiting approaches analyzing link strength focus on either topological information or content semantics, but do not simultaneously consider combining both features. Furthermore, in many applications of text stream data, the users are always in need of the ability to track link strength evolution pattern along time line. In this paper, we argue that the evolutionary link strength reflects a user’s interest to create reply links and is influenced by both neighbors and topic content. With this aim in mind, we propose a novel Content-Topology-Time model for link strength predicting in time-aware online social network. Comprehensive experimental studies on real world micro-blog data set show that our approach outperforms existing ones and well matches the practice.
Development & Design of Large-Tonnage and Great-Height Hydraulic Continuous and Synchronous Jack-Up System
Authors: Li Shu Min
Published: February 2012

At present, as the increasing of ultra-large structures, the contradiction that domestic lifting equipments can not meet the requirement of ultra-large structure’s lifting has become increasingly prominent. Based on the need of ultra-large steel structures (offshore oil platforms) jack-up, using strength theory and finite element analysis, a hydraulic continuous jack-up system for ultra-large structures’ jack-up was studied in this article. A new control system, which combines mechanics, hydraulics and electrics, was presented. More particularly, the modules of speed control and multi-cylinder synchronous control for the ultra-large structure’s lifting was designed. In the WINCC environment, a human-computer interface (control software) was developed by VB to achieve the system's real time monitoring and synchronization control. All movements of the jack-up system could be controlled through the software. To conclude, the jack-up system consists of two parts: the mechanical support structures and the control system. The former can assure great height (10m or more) jack-up, and the later can accomplish multi-point (more than 4 points) synchronous jack-up.
Analysis and Improvement to Coordination Control Circuit of 2×350MW Supercritical Units
Authors: Li Ye , Li Xiao Ning , Hou Yun Hao
Published: February 2012

The paper introduces the characters of coordinated control system which belongs to 2×350MW supercritical air cooling heating units in a power plant. Meanwhile this article analyzes the control strategyies and the characters of main control circuits of boiler units and steam turbines respectively. The request of supercritical units running steadily and reacting quickly is satisfied by employing the technique of static feed-forward and so on.
Research on Influence of Parameters Variation on the Fixed Orifice Performance of the Servo-Valve
Authors: Tang Jie , Gao Dian Rong , Wang Li Wen
Published: February 2012

In this paper, The finite element analysis software is applied to compute the flow field in the fixed orifice with different structural parameter combinations, the pressure distribution curve, the velocity distribution curve, flow rate characteristic, power loss are obtained. By analyzing simulation results, the influence of the orifice parameters on the performance of the orifice is clear. The research is important for the design and optimization of the fixed throttle orifice of the nozzle-flapper valve.
Load Following Controller for Single Free-Piston Generator
Authors: Tian Chun Lai , Feng Hui Hua , Zuo Zheng Xing
Published: February 2012

The controller that used to follow the change of load for the single free-piston engine generator is presented here. It aims to achieve the stable operation with the piston oscillation. Based the energy balance equation in consecutive cycles, the kinetic energy of the free piston was described by discrete state functions. According to its error varying with minimums, the following controller was established to set the fuel injection. It was applied into the performance simulation. The results indicate that the controller is available. Due to the discrete characteristic of the energy transfer, the restoration progress has to require two or three cycles at least. And the stroke is increased with the load stepped up. The top dead center position has smaller changes than the bottom dead center. The displacement versus velocity limit loop is bigger than before. It will be used in the prototype design in the experimental research.
Determined Key Distribution Protocol Using Non-Orthogonal Quantum States
Authors: Li Xiao Yu , Zhao Lei Sheng
Published: February 2012

In this paper we provide an quantum determined key distribution protocol using non-orthogonal quantum states. Two parts can build a key by exchanging some qubits. The principles of quantum mechanics guarantee that the protocol is unconditionally secure. No one except the two parts can get the key. There are no entangled states and complex quantum operations except measurements needed in our protocol. So it is easier to carry out and more robust in practice.
The Seismic Performance Analysis of the Overpass by the Traveling-Wave Effect
Authors: Lei Qing Guan , Fang Hui , Wang Jian Guo
Published: February 2012

With the rapid development of the cities, the construction of the overpasses is increasingly common, while the safety performance of the overpasses are drawing more and more people's attention. China is a country prone to earthquakes, the seismic performance research of the overpasses would have to consider the space impact of earthquakes motion. China's current code of seismic design can not meet the seismic design requirements of the overpasses, there is not full consideration the space effects of earthquakes besides the time effects. This paper analyzes the structure bending moment of the overpasses under the traveling wave effect from the variation of the earthquakes.
Modelling Significant Wave Height Data of North Sea: Rayleigh vs Weibull Distribution
Authors: Shariff Asma A. , Hafezi M. Hadi
Published: February 2012

Significant wave height is generally defined as the mean height of the highest one third of the waves in the sample and is widely regarded as an approximate equivalent to the visually observed height. Some studies assumed that wave heights can be described in terms of Log-normal, Generalized Gamma and Beta distribution, while others proposed Rayleigh distributions. In this paper, we wish to compare Rayleigh distribution with those obtained using two-parameter Weibull distributions. Both Rayleigh and Weibull distributions are used to fit the empirical data obtained from the world's oceans Global Wave Statistics. The Rayleigh distribution parameter is estimated using Maximum Likelihood Estimation (MLE) while, for the two-parameter Weibull distribution, parameter values are obtained using Maximum Likelihood Estimation and Quantile Estimation (QE). A Chi-square goodness of fit test is then used to see how the fitted distributions compare with the empirical distribution. It is found that Weibull distributions are better fits than the Rayleigh distribution, and that the MLE estimation is the best in this respect.
The Exploration of the Minimum Cross-Sectional Area which is the Important Parameters of Nodular Iron Casting Foundry Process Design
Authors: Peng Xian Ping
Published: February 2012

This paper describes the characteristics and shortcomings of several formulas about determining the smallest cross-sectional area in current production of nodular iron casting. Proposed a new calculate formula about minimum cross-sectional area of nodular iron casting. It is indicated being good reliability, scientific and applicability through many successful examples in production.
Bionic Semi-Cylindrical Metal Surface and Soil Direct Shear Test
Authors: Tang Ya Ming , Jia Xue
Published: February 2012

In order to test the reducing adhesion and resistance efficient of bionic semi-cylindrical metal non-smooth surface, the direct shear test is experimented on a kind of bionic dredging tools with typical bionic half- circularity metal surface non-smooth surface. The relation of shear force and shear displacement on a certain pressure is presented. The result will help to design the structure of cutting soil tools’ surfaces with less adhesion and resistance.
The Geometric and Material Nonlinear Analysis of the Bioprosthetic Heart Valve
Authors: Yuan Quan , Ma Hai Bo , Zhang Cheng Rui , Cong Hua , Ye Xin
Published: February 2012

This paper constructs four types of bioprosthetic heart valve’s parametric model via computer aided design, a series of accurate parameters of the bioprosthetic heart valve, such as radius of the sutural ring, height of the supporting stent and inclination of the supporting stent are determined. The finite element method is used to analyze the mechanical properties of the bioprosthetic heart valve in which geometric non-linearity and material non-linearity are all taken into account. The finite element analysis results show that the shape of the bioprosthetic has a significant effect on the mechanical performance of the valve. The stress distribution of ellipsoidal valve leaflets is comparatively reasonable. It has lower peak von-Mises, smaller stress concentration area than the other three types of valve leaflets. This work is very helpful to manufacture valvular leaflets with reasonable shapes and to prolong the lifetime of the bioprosthetic heart valve.