bluuebunny/crossref_metadata_2025 huggingface dataset:
A New Redundant-DOF Wearable Master Device with Force Feedback
Authors: Zhang Xu Long , Liu Yong , Wu Xu Xin , Chou Wu Sheng
Published: August 2014

In this paper, a new redundant degree-of-freedom wearable haptic device is developed and presented, which combines the advantages of the arm exoskeleton and the desktop haptic device. The haptic device has capabilities of large working space and high stiffness, the design of the wearable can reduce operators’ fatigue and increase the comfort of the operation. This paper also includes the analysis of workspace based on the kinematic analysis. Dynamics model of the haptic device has been established to get the torques of the driven motors of every joint. Lately, the virtual prototype model was established in ADAMS to get the simulations results, which lays the foundation for further force-feedback experiments.
Research on Implementation and Design of Monitoring System for Distributed Micro Gird
Authors: Quan Feng Qi , Zhang Hai Ting , Li Chun Dong , Zhao Qing Qi , Yin Peng , Cong Pei Yuan , Zhang Hong Yu , Li Hai Long
Published: August 2014

The intelligent model of micro gird got more and more attention, which is believed to be the development trend of low carbon intelligent micro grid. In this paper, we construct a stand-alone AC-DC micro gird with wind/photovoltaic/battery resources under off-grid model, and discuss the strategy of micro grid monitoring to realize reasonable allocation of power energy by the control system of unified micro grid dispatching. The electricity generation is integrated to the building grid by 380V low voltage, mainly to meet the self-occupied. The excess electricity can also be stored or connected to the network according to technology and management requirements of countries distributed photovoltaic systems.
The Fault Mechanism of Water Ring Vacuum Pump Shaft Broken
Authors: Zhang Xiao Li , Wang Feng Lan
Published: August 2014

This paper introduces the broken shaft failure problem of vacuum pump often encountered, and through the failure mechanism analysis of broken shaft in several aspects, the paper not only summarizes the cause of broken shaft vacuum pump, which is found in five main aspects of broken shaft vacuum p
Design and Implementation of the Evidence Obtaining Front-End of Vehicle-Mounted Video Surveillance System
Authors: Zhang Juan
Published: August 2014

Wireless video surveillance command system is widely used in the public security, transportation, water conservancy, urban management, electrical repair, emergency response projects and other industries. Vehicle-mounted wireless video surveillance system can promptly return the scene to command center using wireless networks. So it is easy for remote visualization, command and control. And it will greatly shorten the reaction time of the accident processing and enhance emergency response capabilities. Mobile evidence obtaining front-end is the most important part of the wireless video surveillance command system. The performance of front-end equipment determines the efficiency of the whole system. So the mobile evidence obtaining front-end is a system design difficult. The following is about the design and implementation of the mobile evidence obtaining front-end of the wireless video surveillance system.
Research on Motor Vehicle Exhaust Pollution Monitoring Technology
Authors: Gao Xiu Li , Hu Tian Jun , Wang Ke
Published: August 2014

This paper starts from the influence of vehicle exhaust, first introduces a major vehicle exhaust monitoring technology--Remote Sensing Technology, gives its monitoring principles and then analyzes the advantages and disadvantages of this method. Then,it takes the most abundant types of substances in vehicle exhaust (NOx) as example,illustrates the principles and methods for monitoring. Finally,it introduces a new vehicle exhaust monitoring method and makes a full summary.
Modeling and Modal Analysis on Capacitive Micromachined Ultrasound Transducers
Authors: Li Yan , Zhang Pei Yu
Published: August 2014

The capacitive micromachined ultrasonic transducers with square and rectangular membranes were modeled for FEM simulation. The membrane is modeled as a thin plate clamped on all sides. Resonant frequencies and vibration modal analysis were carried out. The modes of CMUT with square and rectangular membranes are different. It can be basis for building CMUTs’ structure. Moreover, the resonant frequencies will vary with different side length and ratio of length/width of membrane.
Analysis of Elastic Motion Stability of Flexible Manipulator Arm Based on Lyapunov Stability Theory
Authors: Liu Guang Rui , Zhou Wen Bo , Liu Rong Fu
Published: August 2014

In order to study the elastic motion stability of flexible manipulator arm , to compute the maximum dynamic allowable payload , the partial differential equation of elastic motion of the flexible manipulator arm is solved using the method of Laplace transformation , the dynamic model of flexible manipulator arm carried addition mass on its end position is established ,simplified and truncated using Lagrange equation . the state space expression is established with the state variable and control input and output variable designated , the elastic motion stability rule is built upon and simplified using Lyapunov stability theory . The influence of the end position addition mass and articulation rotational inertia of flexible manipulator arm on its elastic motion stability is analyzed using the stability rule , and the dynamic maximum allowable payload of flexible manipulator arm on its end position is computed in order to guarantee its elastic motion stability . this study is important to the design of robot mechanical manipulator and corresponding drive control system .
Investigation of the Embedded Control System of Diesel Injector Nozzle Grinding
Authors: Yang Shu Zhen , Yu Tao , Bai Yu Jie
Published: August 2014

An embebbed system based on S3C6410 controller and Linux operating system is established to overcome the deficiencies of the traditional control system for high accuracy processing of grinding diesel injector nozzle because of its high speed and real-time performance. In this paper,the general structure of the system is designed firstly. Secondly, the detailed hardware platform is constructed and its peripheral equipment is selected. In addition,the software structure is presented. Finally, the main application program,including of processing control program and algorithm of the flow signal processing which is the key factor for high accuracy maching, is studied. The actual processing data shows that this system has good real-time performance, high processing accuracy and stablity.
The Study of Friction Power Loss of Piston Group of a Twin-Rotor Engine
Authors: Chen Jin Zhou , Pan Cun Yun , Li Wen Min , Zhang Lei , Chen Hu
Published: August 2014

Compared with the conventional piston engines, the new rotary engine has many significant advantages, such as smaller volume and higher power density. Current studies at home and abroad are mainly focusing on aspects of its structural design, kinematics, dynamics analysis, except mechanical efficiency. In conventional piston engines, frictional loss of the piston group accounted for 65% of the total friction power loss [1]. In order to provide the scientific basis for designing low friction piston of the rotary engine, this paper combine the average two-dimensional Reynolds equation, the asperity contacts equation, viscosity-temperature equation and loads balance equation, proposing a method for calculating the friction power loss, and the applying the method to calculate the friction power loss of piston group of a new rotary engine.
66kv Capacitor Cancellation of Research and Application of External Fuse
Authors: Lv Ming Jun , Wang Jin Xing , Tian Fu Jun
Published: August 2014

This paper presents 66kv capacitor canceled fuse after the differential current protection setting calculation method, analyzes the application effect in practical engineering.The detailed calculation method has been analyzed in this paper, and the idea can be helpful in some cases
The Effect of Temperature on Preparing CuO Nanostructures for Changing of Electrical Resistance
Authors: Chamninok Pattanasuk , Polsongkram Dheerachai , An Ki Seok , Pongsuwan Jaruwan , Pukird Supakorn
Published: August 2014

CuO nanostructures materials were prepared by thermal process using carbon charcoal assisted. The copper powder and copper sheet were mixed and covered with carbon charcoal. The starting materials and Si substrates were put in the furnace and heated at various temperatures under atmosphere of nitrogen gas. The prepared products were characterized by scanning electron microscope and X-ray diffraction technique and then studying for changing of the electrical resistance with temperature. The results revealed that the nanostructures of material consisting of CuO and Cu2O phase and the electrical resistance was changed with temperature.
A Study on Bending Behaviours of Aluminium Foam-Filled Tubes
Authors: An Yang , Yang Chun Hui , Hodgson Peter
Published: August 2014

In the study, the strengthening effect of aluminium foam in thin-walled aluminium tubes subject to bending load in investigated experimentally and numerically. Bending tests are conducted on foam filler, hollow tube and foam-filled tube. The finite element method is used as well to get deeper insight into the crush failure modes via focusing on the influence from wall thickness of the tube. The obtained information is useful to optimally design foam-filled tubes as energy absorbing devices in automotive engineering. The optimisation results can be implemented to find an optimum foam-filled tube that absorbs the same energy as the optimal hollow tube but with much less weight.
Steel-Concrete Composite Box Beam Linear Buckling Analysis
Authors: Zhou Chong Yang , Yang Jian Rong , Yang Xiao Dong , Lai Zheng Chong
Published: August 2014

This article uses the finite element method for a particular steel - concrete composite box girder structures were linear buckling analysis and design optimization of web longitudinal stiffeners. By exploring the effects of longitudinal stiffeners geometry and bending stiffness of the composite box girder stability, drawn steel - concrete composite box girder factor of stability of this structure plays a key role. Meanwhile, the optimization of web stiffeners, stiffeners come to a reasonable arrangement for improving the overall stability of the structure, excellent performance play materials and construction economy plays an important role for the stability of the bridge structure similar to the design of future work provide a reference point.
Effects of Grain Size on Crack Aspect Ratio and Crack Initiation Limit in Notched Specimen of Austenitic Stainless Steel (JIS SUS304)
Authors: Matsueda Takahiro
Published: August 2014

Aspect ratio is a key factor to calculate stress intensity factor (SIF) K using fracture mechanics. Cracks are approximated to be semi-circle or semi-ellipse in simple calculation, however, their empirical shapes are changed by stress concentration. In this study, in order to calculate K simply and precisely, a new method to predict fatigue crack initiation stress, σw1 of austenitic stainless steel with modified aspect ratio is discussed. The new method succeeded to predict σw1 within 20% error from empirical values using average austenite grain sizes.
Effect of Twice Quenching on Prior Austenite Grains and Rotating Bending Fatigue Cracks in SUJ2 Steel
Authors: Mizobe Koshiro , Matsuda Wakana , Matsushita Masayuki , Shibukawa Takuya , Kida Katsuyuki
Published: August 2014

Martensitic high-carbon high-strength SUJ2 bearing steel has been widely used as a main alloy for rolling contact applications, and also in components under bending and tension-compression. In order to enhance the material’s strength, refining the prior austenite grain size through repeated-heating was investigated in our previous work. In this work, we observed the microstructure of twice quenched N-rich SUJ2 steel and performed their rotating bending fatigue tests. It was found that most of cracks on the fracture surface originated from Al2O3 inclusions.
A Comparative Study on the Oxidation of Fe-25Cr-7Ni-4Mo and Fe-25Cr-7Ni-2Mo-4W Steels
Authors: Shin Shun Myung , Wang Jei Pil
Published: August 2014

Stainless steel materials (FeCr and FeCrNi-based alloys) are employed in a wide range of modern applications due to their ability to withstand corrosive environments while maintaining good mechanical properties. Their corrosion resistance originates from Cr-rich oxide layer which serves as a barrier against ion diffusion between the alloy and the ambient phase. Custom steel grades can be designed for specific applications by optimizing their properties throughout alloy composition [1].
Thermo-Physical Properties of Phase Change Materials and those Natural Convection Heat Transfer in a Horizontal Enclosed Rectangular Container
Authors: Li Yan Rong , Inagaki Terumi , Kashiwa Hiroki
Published: August 2014

Thermo-physical properties of three kinds of phase change materials (sodium acetate trihydrate, erythritol and sodium sulfate decahydrate) were measured experimentally at various temperatures, in order to evaluate those temperature dependencies. Heat transfer by natural convection was also investigated in a horizontal enclosed rectangular container filled with the tested phase change materials, which was heated at the lower surface and cooled at the upper surface. It was found that the heat transfer coefficient of the liquid phase keeps good agreement with the conventional heat-transfer correlation of natural convection heat transfer in a horizontal enclosed rectangular container by applying the values of thermo-physical properties obtained in the present work.
Development on Silicon Rubber Elastic Composite Magnetic Abrasive and Research on Internal Polishing
Authors: Chow Han Ming , Yang Lieh Dai , Chen Yuan Feng , Huang Yung Ho , Lin Yan Cherng
Published: August 2014

With the use of Magnetic Abrasive Finishing (MAF) to polish surfaces of the parts, roughness on the surfaces can reach a level like a mirror. We have devoted to the study of MAF for many years; the magnetic abrasive particle we have developed can yield a value of Ra 0.008μm (Rmax0.1μm), which is similar to the surface of a mirror. However, there is no way to absorb charging of abrasive particle during polishing for conventional stiff abrasive materials. Therefore, it is difficult to obtain the nanolevel mirror surface.
The study is based on silicon rubber and mix Sic and pure iron powder to develop elastic magnetic abrasive particles. During the process, employing the micro elastic of the polymer elastic magnetic abrasive particle to make the particle shape change and increase the contact area, therefore to improve the surface roughness by micro polishing to achieve a nanolevel mirror polishing demand。 The particle could be made easily in a short time, therefore it could reduce production cost and achieve environmental protection simultaneously.
3-D Model Reconstruction and Mold Flow Simulation for an Existing Shaped Part
Authors: Chang Dar Yuan , Chang Jia Yuan
Published: August 2014

This study presents a 3-D model reconstruction method using a multiple coordinate measurement machine that includes a touch-trigger probe and image detection. Control points of the feature curves of an existing shaped part and geometric data of engineering features are first measured, and then the 3-D model is reconstructed in forward design procedure by the common CAD software ‘Pro/E’. This study also develops finite element models based on the 3-D model built to conduct mold flow simulations by the simulating system ‘Moldflow’. A joystick with two cases was adopted as the illustrated case. Final, actual rapid prototyping (RP) models were fabricated for model examination.
Analysis of the Shear Failure of a Reinforced Concrete Wall
Authors: Hradil Petr , Kala Jiri
Published: August 2014

This paper proposes a 3D computational Finite Element model of a shear wall test that includes the test device with the tested concrete slab. A modified Drucker-Prager model was used for the modelling of the nonlinear behaviour of the concrete. The condition of plasticity is formed from two criteria with which it is possible to realistically describe the strength of concrete under pressure, tension and shear stress. The simulation results are compared to measured data.
Modeling and Characteristics Investigation on a Load Control Valve
Authors: Liu Wei , Wei Jian Hua , Li Shi Zhen , Yu Liang Zhen
Published: August 2014

In this work, a new solution of load control valve based on a hydraulic coupling two-stage principle is proposed. A detailed mathematical model of the valve has been developed. According the model, the steady-state and dynamic characteristics have been studied. The steady state study shows that the valve has an ideal piloted opening function which is not affected by the load pressure or back pressure alteration. Through an insightful analysis based on the linearized model, the dynamic study reveals that the main stage respond as a 1st order model which is smooth and fast enough compared to the pilot stage, while the pilot stage can be simplified as 2nd order model which may cause a problem of oscillation or overshot. The transition response of the valve is mainly decided by the pilot stage. Through the study of various parameters, the diameter of the orifice on the pilot piston shows its efficient influence in adjusting the poles in the pilot stage without affecting the steady state operation of the valve. An optimization based on root locus method is implemented and the poles have been deployed to the fastest points without oscillation.
Guyed Mast Structure Select Initial Parameter Impact on Research Performance
Authors: Ma Gui Zhen
Published: August 2014

Mast structure is made of soft tow rope and slender shaft, whose large deformation and strong nonlinear dynamic characteristics makes very complicated. Under normal design, construction proportion of cases occurring high mast damage is rare in civil construction. In this paper, by choosing the initial parameters of multilayer guyed mast structure, and to study the impact on the performance of the mast structure.
Study on Five-Axis NURBS Path Generation Method and Direct-Interpolation for CNC System
Authors: Li Hui Ying , Chen Liang Ji
Published: August 2014

In this article, a new method with Non-Uniform Rational B-Spline (NURBS) technology is presented and realized in a location and federate controlling system. In the method, the tool paths and the cutter locations (CL) were represented into NURBS curves based on the same knot vector. The above CL data was firstly calculated and then transformed to five motion commands of five axes of machine through the real-time post-procession algorithm. The acceleration/deceleration controlling method is also presented to avoid the impact of machine. The proposed 5-axis spline interpolation method is realized and the experimental result of machining shows that the method is valid.
Optimization and Experimental Research on FOPS of Engineering Vehicle Cab
Authors: Chen Jin Xin , Zhang Jun Xun , Zheng Zai Xiang , Qi Xue Dong
Published: August 2014

The engineering vehicle cab FOPS (falling-object protective structures) mainly contain two parts: top guard and front guard. According to the characteristics of the engineering vehicle cab security architectures, the simulation that top guard is impacted by the falling hammer is made by non-linear analysis software – LS-DYNA. The breakage phenomenon is also researched. The stiffness of the top guard is so weak that the hammer’s displacement is too large, which leads to the impact resistance of top guard is unqualified. Based on this, the cause of the stiffness insufficient is researched. By orthogonal experimental design for the dominant factors, it makes the simulation performance of the top guard meet the requirements of the national standard. On this basis, the simulation mechanical bearing capacity of the front guard is done by LS-DYNA, while the experimental research is also accomplished. By contrasting the result of simulation and experiment, it turns that simulative result coincides with the experimental well.
Parametric Study on Cylindrical P-Wave Propagation
Authors: Chai Shao Bo , Li Jian Chun , Li Hai Bo , Liu Ya Qun
Published: August 2014

Considering the energy variation, cylindrical P-wave propagation across a linear elastic rock joint is analyzed. Then parametric studies are carried out to investigate the effects of the wave source distance,the joint stiffness and the incident waveforms on wave propagation across a jointed rock mass.
Research on Assembly Variation Modeling of Aircraft Weakly-Rigid Structures
Authors: Zhang Xiu Kun , Wang Zhong Qi , Kang Yong Gang , Guo Fei Yan
Published: August 2014

A large number of weakly rigid parts are used in the progress of aircraft assembly, while it’s deviation will affect the quality of the product finally. The assembly variation model of aircraft weakly rigid parts based on influence coefficient method are constructed for controlling assembly accuracy effectively. Based on the linear elastic hypothesis of small deformation, the model carry out the mechanical analysis of aircraft weakly rigid parts in the typical process of positioning, clamping, jointing and spring-back. Influence coefficient matrix of the key features affected by parts manufacturing variation and fixture variation is calculated through the Finite Element method and Monte Carlo simulation, then the assembly variation model is constructed. Finally, based on the above model, an engineering example of assembly variation prediction of aircraft panels was given.
Research of Hadoop Parameters Tuning Based on Function Monitoring
Authors: Chen Feng Ping , Miao Li , Tang Yue Gao
Published: August 2014

Hadoop is a popular software framework supports distributed processing of large data sets. However, with Hadoop being a relatively new technology, practitioners and administers often lack the expertise to tune it to get better performance. Hadoop parameters configuration is one of the key factors which influence the performance. In this article, we present a novel Hadoop parameters tuning method based on function monitoring. This method monitors the function call information during task run to analyze why the performance of Hadoop changes when tuning parameters, which will be helpful for practitioners and administer to tune parameters to get better performance.
A Sensor Grouping Method for Industrial Sensor Health Management
Authors: Zhang Chang Jie , Liu Yu
Published: August 2014

As many sensor networks have been deployed in industry monitoring area, the focus on sensor data quality has also increased. Sensor networks provide us with process details which we can utilize to help making decisions on process monitoring.In order to make meaningful decisions, the quality of the data produced by sensors must be validated. As we evaluate the status of a specific sensor, we may also regard the status of the related sensors. If a sensor’s data show some abnormal, but the sensors related to it didn’t, we may have much more confidence to believe that the sensor is malfunction. In our early study, the sensors grouping strategy is manual. In this paper, we proposed a sensor grouping algorithm, which combines both PCA decouple method and the K-means cluster method. Finally, a test has been made with real data from an oilfield.
Effect of Orientation Angle on Acoustic Radiation Mode Amplitudes of Laminated Composite Plates
Authors: Wu Jin Wu , Yuan Hai Peng
Published: August 2014

In this paper, the acoustic radiation mode’s amplitudes of laminated composite plates are studied. The layer wise finite element model is imposed to determine velocity distributions of laminated composite plates. Based on the acoustic radiation mode, the effects of the panel orientation angle on the first three orders acoustic radiation mode’s amplitude of the laminated composite plates are then discussed. A twelve-layer laminated plate was used as an example, and the numerical simulations results show that the effects of the panel orientation angle on the acoustic radiation amplitude of the laminated composite plates are significant.
Study on Waste Foam Glass Insulation Board
Authors: Xue Li Li , Niu Zhi Rong
Published: August 2014

Introduces a kind of self-insulation board made of waste foam glass, fly ash, and FGD gypsum as main raw material. And researches on the preparation and performance of the insulation board, such as strength, thermal conductivity and water absorption per volume.The test shows that the thermal conductivity is between 0.07-0.13 w/(m·k), strength can reach more than 0.5Mpa,the minimum dry density is 400kg/m3.
Eddy Current Modeling for the Nondestructive Evaluation of Stress Intensity Factor
Authors: Harzallah Salaheddine , Chabaat Mohamed
Published: August 2014

In this paper, a nondestructive technique is used as a tool to control cracks and microcracks in materials. A simulation by a numerical approach such as the finite element method is employed to detect cracks and eventually; to study their propagation using a crucial parameter such as the stress intensity factor. This approach has been used in the aircraft industry to control cracks. Besides, it makes it possible to highlight the defects of parts while preserving the integrity of the controlled products. On the other side, it is proven that the reliability of the control of defects gives convincing results for the improvement of the quality and the safety of the material .
Study and Application of Settlement Resistance and Correction Method of a Residential Building
Authors: Yin Hao , Qiu Hong Sheng , Zhang Xiang Qian
Published: August 2014

This subgrade is a large number of backfill soil and gravel pile foundation. The building produce settlement because of bearing capacity of foundation soil is poor. The rapid settlement of the building has been stopped using grouting techniques but the effect may not be quick; For the purpose of settlement resistance and deviation rectification, it is better to use a comprehensive treatment methods which combine the hollow grouting anchor static pressure pile, heaping load and drawing out soil with watering. It acquire a good effect of settlement resistance and deviation rectification. By establishing finite element model of the frame structure of the building using software of ANSYS, the housing stress and deformation in the process of rectification can be simulated and compare with the data of field. It can confrim a dependable construction schedule and insure the housing stress and deformation is in the range of safety.
Electroless Nickel-Phosphor-Boron Plating and Electroplate Nickel on Surface of Optical Fiber
Authors: Peng Jian
Published: August 2014

This work presents a method for metal coating of the surface of optical fiber by means of electroless and electroplating. No vacuum techniques or any high-temperature methods are required. The coating method presented in this work is developed with emphasis to further embedding the coated fibres into solid metal using. The method is based on electroless and electroplating, and therefore, the fibres can be coated with any metal or metal alloy applicable by this technique.
The Design of NC Spherical Turning and Grinding Machine Tool
Authors: Wang Yu Qing , Li Xi Zhao
Published: August 2014

With the requirements of machining develop towards high precision, high efficiency, intelligentization, combination and greenization, in this paper we develop a NC spherical turning and grinding machine tool with high precision and combination to meet the brisk demand of market for spherical workpieces with large diameter and high precision. According to the enterprises’ practice results ,our machine tool can finish machining of large diameter and high precision sphere quickly, with high quality and low cost, and it has a high practical value.
Effects of Simulation Parameters on Springback in Air Bending of JCO Forming
Authors: Fan Li Feng , Gao Ying , Yan Jia Xin , Yun Jian Bin
Published: August 2014

JCO forming is one of manufacture mode widely used in production of large diameter submerged-arc welding pipes, in which JCO forming process is progressive multi-step air bending. In order to improve JCO forming quality, it is necessary to predict springback of air bending. In this paper, air bending is simulated using finite element method, but simulation parameters directly affected prediction precision. So, taking the air bending of X80 steel Φ1219mm×22mm×12000mm welding pipe for instance, the air bending is simulated by finite element (FE) code ABAQUS. The effects of simulation parameters on springback is discussed. Thus, the results of research provides a basis to improve prediction precision of springback in air bending of JCO forming.
Effects of Technical Parameters on Mechanical Expanding of Large Diameter Welding Pipe
Authors: Yan Jia Xin , Yun Jian Bin , Fan Li Feng
Published: August 2014

Mechanical expanding is widely used in production of large diameter submerged-arc welding pipes. The pipe is circumferentially expanded to obtain a highly circular shape. But the crack of the metal material often happens under the action of the expanding load. To analysis this problem, it is necessary to analysis the distribution of stress in mechanical expanding forming process. So, mechanical expanding is analyzed using finite element method.
Taking the expanding of X80 steel Φ1219mm×22mm×12000mm welding pipe for instance, the mechanical expanding forming process is simulated by finite element (FE) code ABAQUS. In this paper, the simulation data is validated by experiments and a comparison showed a good agreement with experiments results. The maximum mises stress of mechanical expanding is discussed. Thus, the result of research provides a basis to improve welded pipe quality.
Research on the Bus Passenger Motion Vector Algorithm Based on Video Image
Authors: Xiang Huai Kun , Cheng Lan Qiu
Published: August 2014

Video-based bus passenger collection is considered to have a greater potential for counting passengers, but the difficulty lies in how to solve the problem of accurately tracking and determining the direction of the moving target under the complex state of motion. The traditional target detection algorithm, like frame subtraction and edge detection, is very difficult to deal with the situation of immediate multi-objective. Based on image preprocessing, an algorithm about intelligent video multi-target tracking and traffic statistics is designed aiming at the above-mentioned situation. The core contents in this paper includes: the grid-density clustering and line segment clustering, extraction and segmentation target connected domain that is handled to be a circular, tracking the motion vector of target feature point, finally ,achieving accurate statistics on the number of people getting on and off. Experiments show that this algorithm can effectively track more people simultaneously and the bus traffic statistical accuracy achieves the goal.
Noise-Reducing and Effect-Enhancing System for Communication Equipment Mounted on Vehicle
Authors: Chen Lu , Fan Shi Hai , Zhang Shi Nan
Published: August 2014

The noise of communication equipment mounted on Vehicle is one of important factors affecting equipment efficiency. Active Noise Control (ANC) technology is applied to noise reduction of the equipment, and a noise reduction mathematics model is built based on accurate noise measurement. An approach to reduce noise based on first-order differential microphone (FDM) array and ANF technology is proposed, which collects and evaluates environmental noise precisely to enhance voice. This approach improves the conversation effects and realizes full fidelity of voice transmission.
An Improved Algorithm on Frequent Subgraph Query
Authors: Chu Yang Jie , Jia Xin
Published: August 2014

This paper studies the frequent subgraph query issues on graph data set. Combining with the approach that frequent subtree extend to frequent subgraphs proposed by Xian-Tong Li, we propose a new algorithm. This algorithm improved its storage structure avoiding direct subgraph isomorphism judgment, reduced the stability requirements on graph set, and enchanced the overall efficiency of the algorithm.
A New Design of Embedded Wireless Sensor Network
Authors: Wang Bei
Published: August 2014

Wireless Sensor Network (WSN), which integrates wireless communication, sensor, network and embedded technologies, is a new data collection network system. It is a new information acquisition and processing technology. Because WSN can operate in a wireless environment, it can be deployed in areas inaccessible to human beings or difficult to install wired network. It has been widely applied in many areas such as medical, transportation and military thanks to its robustness. The new design of embedded wireless sensor network has resolved the issues of limited monitoring area and difficult control management. The test results indicate that this new design of the embedded wireless sensor network is capable of real-time control management in an expanded monitoring area.
Risk-Based Inspection Analysis of Jacket Platform
Authors: Wang Yi Tao , Ren Hui Long , Yu Jia Ju , Cui Bing Bing
Published: August 2014

Risk-based inspection analysis is a key part of structure integrity management (SIM) process for ensuring the fitness-for-purpose of offshore jacket platforms. For the platforms locates in the South China Sea which often suffer severe sea condition, it is essential to employ an appropriate assessment method to determine the structure strength and increase the platforms’ safety. This paper presents a comprehensive risk-based inspection method for in-service jacket platform structure. Nonlinear pushover analysis is used to carry out the ultimate bearing capacity and failure consequence of the structure, in which the platform ultimate bearing capacity is characterized in terms of the Reserve Strength Ratio (RSR) and Residual Capacity Ratio (RCR). Taking the four limit state equations of structure member and limit state judgment criteria of structure system into consideration, the structure reliability analysis is proposed with the combination of extreme probability model of environment loads. On this basis, a risk matrix will be formed and a risk-based inspection plan can be developed. A case study of jacket platform located in the South China Sea is used to illustrate the application of the structure assessment approach.
Research and Develop of Tube Catching Manipulator Control System Based on DMC
Authors: Zhu Qi , Wu Yan , He Yu An
Published: August 2014

This paper introduces the tube catching manipulator control system based on DMC, elaborating hardware and software of the whole control system, applying the PID algorithm and closed-loop feedback, putting forward a control system combined increment PID controller and double closed-loop compensation. It makes the manipulator position more accurately and run more stably.
Switch Module Designed to Meet the EPS Reliability Intelligent Control
Authors: Zhang Li Guo , Gao Jing
Published: August 2014

This paper considers the design of switch module. It is a key part of intelligent control emergency power supply. The working reliability of the switch module is an important performance index. Firstly, paper according to the characteristics that watchdog microprocessor software vulnerabilities and a control state to maintain after crash recovery, the design software reset and hardware reset propose two solutions. Next, data acquisition and data communications hardware are using photoelectric isolation technology. To achieve true electrical isolation, the system uses three power supply witch are electrically independent. And then, module data communication protocol used MODBUS_RTU, and design force control configuration software debugging interface. Finally, Experimental verification of the software programs and hardware circuit correctness and reliability. Module design reflects the improved anti-jamming capability, while more suitable for general purpose, industrialization and production.
Fault Detection and Diagnosis for Sensor in Complex Control System Based on KPCA
Authors: Xu Ping , Wang You Cai , Wang Kai , Wang Qiu Yan
Published: August 2014

The Fault detection and diagnosis for sensors are important for the performance of the complex control system seriously. The kernel principal component analysis (KPCA) effectively captures the nonlinear relationship of the process variables, which computes principal component in high-dimensional feature space by means of integral operators and nonlinear kernel functions. The KPCA method is used in diagnosing for four common sensor faults. At first its fault is detected by Q statistic; secondly its fault is identified by T2 contribution percent change. The simulation and the practical result show the KPCA method has good performance on complex control system in sensor fault detection and diagnosis.
Comprehensive Example Analysis on Main Technology of Exoskeletal Robot System for Upper Limb Rehabilitation
Authors: Chen Ming Shi , Zhao Liang
Published: August 2014

Many medical treatments need to confront problem of upper limbs’ rehabilitation. Major function of exoskeletal robot system for upper limbs rehabilitation is to assist patient to carry out upper limbs’ rehabilitation training. Main technology of exoskeletal robot system for upper limbs rehabilitation includes design of mechanical structure of exoskeletal robot, design of control system of exoskeletal robot and implemention of data and information transmission between exoskeletal robot and upper limbs of human body. Currently implemention of data and information transmission rely mainly on methods of acquiring sEMG signal and force feedback. Reviewing and analyzing the specific technical examples will be important way in improving and upgrading the technology in future. Current development trend of main technology is to advance degree of comfort, accuracy and effect in rehabilitation training. Further development trend of main technology henceforth is people-oriented, strengthening effect, improving efficiency, optimizing structure and reducing energy consumption that follow claims of medical treatment.
A Design of Information Security Curriculum Based on Social Networks and Edutainment
Authors: Ruan Peng , Wei Zhong
Published: August 2014

According to the existing training framework of Information Security, Jianqiao Colledge conducted a needs analysis and instructional design of information security. In addition, it offers the realization of the vulnerability network and independent learning strategies based on the idea of edutainment.
A Chinese Small Vocabulary Offline Speech Recognition System Based on Pocketsphinx in Android Platform
Authors: Liu Xin Fei , Zhou Hui
Published: August 2014

This paper describes a Chinese small-vocabulary offline speech recognition system based on PocketSphinx which acoustic models are regenerated by improving the existing models of Sphinx and language model is generated by LMTool online tool. And then build an offline speech recognition system which could run on the Android smartphone in Android development environment in Linux system. The experiment results show that the system used for recognizing the voice commands for cell phone has good recognition performance.
Implementation of Remote Monitoring System Based on S3C2440
Authors: Cheng Wan Sheng , Fu Zhen He , Leng Shu Xia
Published: August 2014

To achieve a monitoring system indoor, design a network video surveillance system which based ARM9 processor. The system uses the S3C2440,which produced by Samsung Corporation as the processing chip of the network video surveillance systems, and the USB camera as a video capture device, connecting to the Internet via a wired way. This paper describes an embedded operating system migration and programming, as well as MJPG-steamer video server software compiler and transplantation in detail. Experimental results show that the system is stable, while the video is clear and smooth.
Numerical Simulation Research of the Influence Parameter of Impedance Friction Stress on the Anchorage Segment of Flexible Injection Bolt
Authors: Zhang Xuan Li , Zuo Shu Ning
Published: August 2014

On account of analytic method and test method are difficult, we use the finite element method on flexible inner pressure bolt, Obtaining: The adjacent formation elasticity coefficient is bigger this kind of anchor rod the anchor effect to be better; Within a certain range, the anchor rod body rubber material elasticity coefficient is smaller is more advantageous in enhances the anchor rod the anchor effect; Increase the coefficient of friction between the bolt and surrounding rock, Can significantly improve the anchor bolt effect; Anchor maximum impedance friction stress uniformly distributed along the axial direction, This causes the flexible note to press the anchor rod to have the big superiority.
The Urban Competitiveness Analysis and Research of Urbanization of Hebei Province
Authors: Hao Zan
Published: August 2014

In 2011, the urbanization rate was 45.60% in Hebei province, an increase of 1.1% over the previous year. 6 districts city urbanization rate was more than 45%, 16 county-level cities and 19 county urbanization rate was more than 40%. Urbanization rate in 11 districts city, Tangshan is in the lead, at 52.14%; Shijiazhuang is second, at 52.01%; Hengshui is in the bottom, at 40.33%. Urbanization means the historical process of social development that from traditional agricultural society to modern urban society, which includes four basic connotations. This article determined the basic model of urban competitiveness though study of urban competitiveness in the process of urbanization in Hebei province with DEMATEL method. The author hoped to provide the reference and measuring standard for human resources cities quality in urbanization of various provinces.Urbanization is a unified organic whole body involved in four key elements, which show as the set of population to cities and the expansion of cities, the increase of the number, and the improvement of city modernization level. The understanding of urbanization is not comprehensive if anyone is missed.
Study on the Impacts of Salinized Soils on the Quality of Upper Water during Seawater Intrusion
Authors: Che You Ming , Hu Hai Xing , Wan Xiao Qi
Published: August 2014

Potential harm of environment caused by seawater intrusion had come into reality. Seawater intrusion has caused a variety of impacts on ecological environment. In this paper, in order to research salinized soils’ impacts on upper groundwater in the process of seawater intrusion, the author conducted a series of laboratory tests and analyzed characteristics of influence which lower salinized soils impact on upper water.
Study on Special Vehicle’s Handling Stability by Test Technology
Authors: Zhao Yuan , Cheng Hong Jie , Liu Yan , Wu Zhao Jun
Published: August 2014

According to handling stability problem in using process of special vehicle, its evaluation test method is researched and analyzed. Referring to national profession norm, the on-line detection system of handling stability of special vehicle is constructed, and the design idea of evaluation software is also illustrated. Finally, based on the constructed testing system, the proving ground test of special vehicle is carried out, including the transient response test of steering wheel impulse input, the test of steering wheel returnability, and the steady static circular test. The test results indicate the feasibility and validity of the constructed test system, which provides technical support for detection on-line and fast evaluation of handling stability of special vehicle in riding process, and enhance the road safety during the riding process of missile weapon system.
The Impact of Free Cash Flow and Capital Structure on the Performance of the Company
Authors: Wang Guo Zhen , Wang Zi Yue , Li Yuan Jie
Published: August 2014

This paper studied the impact of free cash flow and capital structure on the performance of the company. It is based on the theories of the free cash flow and the capital structure, combined with the actual situation of China, using different property listed corporations’ sample, makes an empirical study on the impact of free cash flow and capital structure on the performance of the company. The result shows that on the one hand, having more free cash flow will cause negative effects on the performance of corporation, on the other hand, with the increase in liabilities financing, the listed corporation's performance fall.
Study on the Relationship between the Energy Carbon Emission and Economic Growth in Hebei Province
Authors: Zhang Yan , Wang Chang
Published: August 2014

This article simply reviewed the carbon emission situation in Hebei province from 1996 to 2011, and tried to use environmental Kuznets curve to analysis the impact of the economic growth of CO2 emissions on the energy consumption. The regression results show that CO2 emissions and economic growth in line with the environmental Kuznets curve inverted U-shaped, but it is in the left hemisphere of the curve, namely, as the growth of the economy, the CO2 emissions will continue to increase, so the carbon emission reduction work in Hebei province is still very heavy, we should change the energy consumption situation actively in the environment, adjust the industrial structure, develop new technology vigorously, and promote the innovation of emission reduction.
Numerical Analysis of the E-Type Diaphragm Based on ANSYS
Authors: Song Li Na , Shao Jun , Feng De Quan , Fan Wei
Published: August 2014

With finite element method, the numerical model of the E-type diaphragm was built in this paper. Based on the model, we got the shear strain law of the E-type diaphragm surface under uniform pressure. Taking it as elastic element and the FBG as sensing element, we made a FBG pressure sensor and obtained the experiment result. The result fit well with finite element simulation value. It shows that the finite element model in the paper is reasonable and effective. The model can be used to design and optimize the sensor.
Daily Load Forecasting Based on RBF-ARX Model
Authors: Hou Hai Liang , Chen Jie , Sun Miao Ping , Cai Bin Jun
Published: August 2014

Short-term load forecasting plays a vital role for the power system’s safe operation and production arrangements. This paper regards electric load forecasting as a nonlinear time series prediction problem, and establishes the electric load autoregressive prediction model (ARX Model) based on historical load data, approaching ARX model parameters with RBF neural network, estimating model parameters with using a Structured Nonlinear Parameters Optimization Method (SNPOM), proposing cycle prediction method for short-term electric load forecasting. Experimental results show that the method has higher prediction accuracy for short-term electric load forecasting. Keywords: Short-term load forecasting; time series; RBF-ARX model; cycle forecasting; structured nonlinear parameter optimization method
Polynomial Stability for Timoshenko-Type System with Past History
Authors: Ma Zhi Yong
Published: August 2014

In this paper, we consider hyperbolic Timoshenko-type vibrating systems that are coupled to a heat equation modeling an expectedly dissipative effect through heat conduction. We use semigroup method to prove the polynomial stability result with assumptions on past history relaxation function exponentially decaying for the nonequal wave-speed case.