bluuebunny/crossref_metadata_2025 huggingface dataset:
Le ballon et les gants de Tommy Atkins. Le sport dans l'armée britannique pendant la Grande Guerre
Authors: Mason Tony
Published: January 2014

Dès les premiers mois de la Première Guerre mondiale, les soldats britanniques ont commencé à pratiquer le sport derrière la ligne de front. Ils furent soutenus par des officiers qui offrirent des trophées et croyaient dans les valeurs viriles du sport, tout en considérant la guerre comme the greatest game . Le spectacle sportif fournit un bon dérivatif à des soldats éloignés de leur patrie et soumis autant à l’ennui de la vie militaire qu’à l’horreur des combats. Le football association, la boxe et le turf constituèrent une trilogie qui leur faisait retrouver les plaisirs et les loisirs de la classe ouvrière britannique. La participation des officiers permettait d’assouplir la discipline et la hiérarchie militaires. Certains champions purent aussi obtenir des traitements de faveur en représentant leur unité dans les championnats militaires mais les compétitions opposant pelotons ou compagnies avaient aussi pour but de développer l’esprit de corps, notamment après la réforme de 1916 établissant le peloton comme unité de base de l’armée britannique.
L'engagement de troupes nord-africaines et coloniales dans le Sud-ouest de la France en 1944-1945
Authors: Weiss Stéphane
Published: January 2014

Etabli à partir de fonds conservés par le Service historique de la Défense, cet article porte sur l’engagement de troupes nord-africaines et coloniales dans le Sud-ouest de la France au cours des mois suivant la Libération en 1944-1945. La perception gouvernementale de cette région libérée sans l’intervention de troupes régulières conduit cet engagement à répondre davantage à des fins sécuritaires qu’à un besoin militaire vis-à-vis des garnisons allemandes restées sur le littoral atlantique. Cet engagement de troupes nord-africaines et coloniales, y compris des bataillons formés avec d’anciens prisonniers de guerre détenus sur place depuis 1940, donne également lieu à l’expression de revendications identitaires de la part d’officiers issus des Forces françaises de l’intérieur, des rangs de la France libre ou de l’ex-Armée d’Afrique restée fidèle au gouvernement de Vichy en 1940-1942.
Évaluation des performances et de la charge de travail induits par l'apprentissage de procédures de maintenance en environnement virtuel
Authors: Ganier Franck , Hoareau Charlotte , Devillers Frédéric
Published: January 2014

L’objectif de cette étude était de vérifier comment se déroule l’apprentissage d’une procédure en environnement virtuel d’apprentissage d’opérations de maintenance de chars : GVT (Generic Virtual Training). Des mesures comportementales (temps de réalisation de la tâche, nombre et durée de consultation des instructions, nombre d’actions incorrectes) et des mesures subjectives de la charge de travail (réalisées avec NASA-TLX) ont été recueillies chez 15 individus lors de l’exécution d’une procédure. Celle-ci faisait l’objet de 10 répétitions successives par les participants puis 3 nouvelles répétitions après quatre jours d’intervalle. En accord avec les théories proposées par Fitts (1964) et Anderson (1983, 1995), les résultats montrent que l’apprentissage de la procédure s’effectue selon 3 phases (cognitive, associative et autonome). Au plan factuel, l’évolution des performances prend l’allure d’une courbe d’apprentissage et s’accompagne d’une diminution de différents facteurs constitutifs de la charge de travail. Les performances observées lors de la réalisation de la procédure après délai attestent de son stockage en mémoire à long terme.
La grève des mineurs de l'automne 1948 en France
Authors: Fontaine Marion , Vigna Xavier
Published: January 2014

La grève des mineurs de l’automne 1948, souvent présentée comme l’un des symboles de l’entrée de la France dans la guerre froide, n’a pourtant suscité jusqu’ici que peu de travaux historiques. En mobilisant les abondantes archives disponibles, cet article vise à éclairer ce conflit qui ne peut être réduit ni à une manipulation communiste, ni à une pure action de classe spontanée et héroïque. Il s’agit d’un mouvement indissociablement social et politique, obéissant à des logiques temporelles et géographiques diverses. L’analyse tente notamment d’expliquer l’extrême violence qui caractérise cette grève, violence perceptible aussi bien dans les rapports entre les mineurs et l’État que parmi les mineurs eux-mêmes.
Washington face à la participation des communistes au gouvernement en Italie (1973-1979)
Authors: Heurtebize Frédéric
Published: January 2014

Dans les années 1970, le Parti communiste d’Italie fut le fer de lance de l’eurocommunisme, mouvance au sein de laquelle certains partis communistes occidentaux exprimèrent leur adhésion aux principes démocratiques et prirent leurs distances avec Moscou. Loin de rassurer les dirigeants américains, cette évolution exacerba leurs craintes. Pour le secrétaire d’État Henry Kissinger, des communistes supposément responsables et modérés s’avéraient en fait « plus dangereux » car plus à même d’arriver au pouvoir démocratiquement. Cela explique une opposition farouche à tout « compromis historique » entre le Parti communiste italien et la Démocratie chrétienne. Arrivée au pouvoir en janvier 1977, l’administration Carter se montra au début plus ouverte avant de revenir à une opposition plus franche.
Modal Testing and Analysis of Z-Axis Supporting Plate for High–Speed PCB NC Drilling Machine
Authors: He Ling , Huang Guo , Wu Heng Yu , Lei Ya Li
Published: January 2014

A constraint condition finite element analysis mode of the high speed PCB drilling machine Z-axis bottom plate was established on the platform of Abaqus. And then an optimal structural mode of a Z-axis supporting plate was obtained by means of performing constraint modal analysis and dynamic analysis optimization on the structure of the Z-axis supporting plate. modal tests and analyses were performed on the Z-axis plate before and after the optimization with the application of an LMS vibration/dynamic signal acquisition and analysis system. The experimental results were shown that the tested Z-axis plate dynamic characteristics were basically consistent with the obtained Z-axis supporting plate mode from simulation analyses using the finite element software Abaqus. It was proved that using the finite element software was feasible for optimizing the Z-axis supporting plate structure.
Nissan Car Test Bench Research Production and Use of Teaching
Authors: Yang Lian Fu , Ma Cheng Quan
Published: January 2014

With the development of auto maintenance technology the applications of vehicle in the car maintenance teaching are becoming more and more. But it is inconvenient and not intuitive on the whole vehicle fault setting and testing. Especially at the time of data measurement this will increase the loss of the vehicle. So this will make it more practical significance to substitute vehicle teaching experiment platform for the vehicle in the teaching. This makes it necessary the research and production of vehicle test bench. Here we will research the Nissan car test bench in the production and use process.
Simulation Research on Resistive Coupling of High-Speed Railway
Authors: Chi Yao Dan , Tan Tian Hong , Yang Kai Yu , Gao Yin Han , Ke Hui , Gu Hai Long , Zhao Jing Yuan
Published: January 2014

With the rapid development of high-speed railway, the problem caused by railway has become the focus of public attention. Whether the railway will damage the electromagnetic environment become an unavoidable topic. Choosing the AC 25KV high-speed railway to study, the impact of its resistive coupling on the human body or different devices is explored. Using the existing analytical formula, the ground potential rise caused by the resistive coupling has been simulated, which intuitively show the different ground potential rise in different situations. Finally, the impact of resistive coupling has been analyzed.
Research on Temperature Distribution for Tubing Liquid with Hot Natural Gas Injected Annulus Using Gas Lift
Authors: Wei Luo , Liao Rui Quan , Li Yong , Wu Jian
Published: January 2014

In light of the difficulty including the complicacy of heat transfer process with hot natural gas injected in gas lift annulus, regular temperature prediction methods are commonly used to consider the tubing fluid temperature for the heat transfer from tubing to annulus, actually the tubing fluid will not be the external heat transfer but it will be heated by annulus when the gas temperature in annulus is higher than the tubing fluid temperature, as well as especially the prediction of tubing wellhead temperature in terms of fluid temperature distribution traits in annulus and tubing, regular temperature prediction methods manifest limitation due to their applicability. Based on the fairly comprehensive tubing fluid temperature distribution prediction model with consideration of Thomson effect and such factors as kinetic energy, annular convection heat transfer and phase change etc. developed by the predecessors, and according to the basic principle of conservation of energy and heat transfer, the actual heat transfer process with hot natural gas injected in gas lift annulus was considered as a plus in this paper. The models for actual heat transfer and tubing fluid modified temperature prediction were established and eventually, the models were verified via multiple field tests. The reliability, capable of satisfying the requirements of engineering precision, in terms of temperature distribution of model prediction was proved.
Design and Simulation of an Improved Doherty Power Amplifier
Authors: Liu Yang , Xiao Huai Bao
Published: January 2014

This work presents theory, design and simulation of an improved power amplifier based on the Doherty topology. It is theoretically shown that, by using multiple iterations of the source-pull and the load-pull in the platform of ADS with a Doherty power amplifier topology, the proposed amplifier can provide higher efficiency both at full output power and at back-off power, thus validating practical effects of the design and demonstrating a promising prospect of the design to be used in the future wireless transmitter applications.
Design of NdFeB Permanent Magnet DC Generator
Authors: Wu Yu Yin
Published: January 2014

The advantages and development trend of automotive neodymium iron boron permanent magnet DC generator is summarized, analyzed the operation mode of neodymium iron Peng Yongci DC generator, and puts forward the neodymium iron boron permanent magnet DC generator has broad prospects for development. The design of the key parts of power system -- the neodymium iron boron permanent magnet DC generator, the excitation rotor and the armature winding parameters were designed to meet the needs of neodymium iron boron permanent magnet DC generator and improve the efficiency of the generator.
Finite Element Modeling of Optical Path Length Control Device for Laser Gyroscope
Authors: Yu Xu Dong , Xie Yuan Pin , Zhang Peng Fei , Lu Guang Feng , Xu Yu Nong , Long Xing Wu
Published: January 2014

Optical path length variations due to temperature, manufacturing misalignments, operation environments can affect the performance of ring laser gyroscope (RLG). This paper presents a structural design of optical path length control device (PLC) using finite element analysis. The static analysis and harmonic response analysis of the PLC is performed to investigate the deformation on different voltage, and model analysis is selected to determine the natural frequency and eigenmodes. To validate the simulation results, an experiment on RLG with mode-scanning is carried out and the maximum errors are within 0.025um. The experiment results are found to be in good agreement with the simulation results. The results indicate that the finite element model can be beneficial to designing and optimizing the structural parameters for the PLC.
The Research of IC Test Based on LTX-77 Test System
Authors: Tan Li , Fang Yu
Published: January 2014

LTX-77 test system is a large IC test system that is used for various kinds of analog IC, digital IC and analog digital mixed IC. It can be used to test DC parameters, AC parameters and logic functions. In the paper, the IC test platform is LTX-77 test system. IC ADC0804 was tested as the test object. The test method of IC is described in the view of actual test. The test results show that the test system is convenient and accurate, which has important practical value for IC manufacturers and users.
The Design of Ward Calling System Based on SCM
Authors: Ji Min , He Jing Feng
Published: January 2014

This is a ward-called system of 64-bed. Its core component is an AT89C51 single-chip with rich internal storage resources. This system uses 8×8 matrix keyboard as its input device, a 2×8 LED as its static display, a 12MHz crystal oscillator circuit as its timer. A reset button is used to control its reset circuit. With the adoption of AT89C51 single-chip, the system has sufficient internal program memory unit and data storage unit. Therefore, there is no need for an external memory expansion with C programming language. For hospital, this is a low-cost, high-efficiency system with the advantages of easy-operation and convenient installation.
Design of Multi-Channel Physiological Signal Monitor Based on Wireless Data Transmission
Authors: Zhang Zhen , Liu Fang
Published: January 2014

In order to monitor important parameters of patient vital signal continuously in real-time manner for a long time, a multi-channel physiological signal monitor based on wireless data transmission was designed. The device can acquire 8-channel high-resolution signal of electromyography or electrocardiograph and transmit these signal to remote monitoring station using real-time wireless communication. The monitoring station implements data displaying, storing, analyzing and processing. Simulation analysis shows that the design of the monitor has a broad outlook of clinical applications, making possible to realize the telemetry wireless monitoring of respiratory disease.
Fuzzy PID Control System for Sludge Digestion Tank Temperature
Authors: Xue Shu Qi , Yan Wen Zhao , Ma Liang
Published: January 2014

In order to improve the accuracy and stability of sludge digestion tank temperature control, based on the PID control with fuzzy controller, using the fuzzy control algorithm, obtained the adjustment of PID control parameters and online self-regulation of PID controllers parameters. The simulation tests show that the fuzzy PID control system for sludge digestion tank temperature outperforms the general PID control system because of a ±1°C control accuracy, this can satisfy the requirements of temperature control of sludge digestion.
Optimal Selecting Strategy for Tool Size of High Efficiency Milling of Complex Curved Surface
Authors: Liu Hong , Zhang Yong , Luo Li Li
Published: January 2014

It is an important factor that tool size affects the quality and efficiency of complex curved surface of CNC machining. This paper starts with analyzing the functional relationship between the tool size and the quality and efficiency of complex curved surface, gives the selection method of optimal minimum tool which can ensure the precision of machining curved surface, establishes optimal selecting algorithm of reasonable large size tool with the most high efficiency as the objective, and for the curved surface of complex geometric features, puts forward tool combination selection method with effective area ratio of tool machining as a reference. Application examples show: the optimal selecting strategy of tool size in this paper, under the premise of adequately ensuring the machining quality of complex curved surface, can effectively improve the whole machining efficiency.
Fault Tolerant Permanent Magnet Motor 's SVPWM Control and Analysis of Fault-Tolerant Performance under Fault Conditions
Authors: Yang Jian , Guo Jin Bo , Dong Hong Chao , Zhang Hong Da
Published: January 2014

A study is made about the structure and its mathematical model of FT-PMM. The design of the vector control system (SVPWM) based on the id = 0 control strategy is proposed, which realizes the closed-loop vector control with feedback of speed, current, and position. This method is proved right by Matlab simulation. From a hardware level, the dsPIC30f4011 is used as the core of the system. With the help of the design of the bootstrap power supply of IR2110, the number of power is reduced and the cost is saved. The inverter circuit consists of 3 independent H bridges was used to control each wingding independently in order to enhance the ability of fault tolerance. Through hardware test, the result indicates that this vector control system could satisfy the demands of speed control and stable operation. After Man-made fault is set, the fault-tolerant performance is analyzed and the system is proved to have fault-tolerant capability to a certain extent.
Research on Control System of Quasi-Homogeneous Lean-Burn Engine
Authors: Wang Jia Jun , Tao Jun Wei , Zhang Hong Da , Guo Jin Bo
Published: January 2014

Quasi-homogeneous lean mixture combustion technology can take full advantages of lean-combustion, and help reduce the engine fuel consumption and emissions. Quasi-Homogeneous Lean-burn engine Control System, combined virtual instruments with engine electronic control technology, can precisely control air-fuel ratio injection, timing, fuel injection pulse and ignite on timing, which provides a reliable and convenient platform for the engine lean-burning performance tests..
Preparation of PVP/TEOS/Nitrates Composite Nanofibers
Authors: Chen Zhi , Luo Jun , Liang Chao , Liu Jia Lin
Published: January 2014

PVP/[Sr (NO3)2+Mg (NO3)2+TEOS+Eu (NO3)2+Dy (NO3)2] composite nanofibers were prepared via electrospinning, the effect of different electrospinning parameters on the composite nanofibers morphology were investigated. The results revealed that diameter of the composite nanofibers increased at first and then decreased with the increasing of voltage, and the properties of the spinning solution (viscosity and surface tension) increased gradually, but the conductivity decreased at first and then increased with the increasing of PVP content. SEM analysis indicated that its easy to get a good morphological and uniform composite nanofibers when the voltage was 13 ~ 15 kv, inorganic salt content was 5% ~ 6%, and concentration of PVP was 15%.
Research of Single-Device Test Based on Relay Protection Simulation and Training System
Authors: Wang Tao , Lin Gui Hua , Han Dong
Published: January 2014

This article put forward a Single-device test method based on the protection Tester and the relay simulation training system, and it takes advantage of the board as a real-time source, network sampling value message and GOOSE Subscribe publish using of Visual C + + programming language, which acts on the simulation of the actual protection device, the dynamic display logic process and the secondary circuit protection action signal and it is with the actual logic of the protection device. This article discusses the design of the simulation system, as well as virtual protection principle library brief simulation, the software uses a flexible, simulation results are accurate and reliable, clear and intuitive. It is available relay operating personnel training, so that by the trainees can go deep into protection device internal device deep principle.
The Timing Control Research for the Motor in Wheel
Authors: Song Chuan Xue , Peng Si Lun , Song Shi Xin , Li Jian Hua , Xiao Feng
Published: January 2014

For the permanent magnet synchronous motor used in electric vehicle wheel, in order to obtain high torque at low speed, a lot of pole pairs are designed in the structure. So the electrical angle will rotate too fast, and the commutation delay will appear apparently at high speed. The commutation process of permanent magnet synchronous motor is analyzed and the timing control according to rotate speed is deduced. A motor simulation model is built to verify the control strategy. The result shows that the strategy can effectively improve high speed performance of motor.
Study on Safety of Model II Powdery Emulsion Explosive
Authors: Zhang Kai Ming , Ni Ou Qi
Published: January 2014

Powdery emulsion explosive (PEE) invented by Ouqi Ni at the end of 1980s is a new kind of W/O industrial explosives. It has brought industrial explosives technology into a new era. Through years of development, Model I powdery emulsion explosive has been put into large scale production in more than 70 explosive manufacturers and is widely praised by its users. Through continuous research and improvements, Model II powdery emulsion explosive with better performance, longer shelf life and considerably lower cost has been successful invented. Given that safety is one of the most important factor in production, transportation and usage of industrial explosive, this paper is to evaluate the safeness of Model II PEE in terms of mechanical sensitivity, heat sensitivity, static electricity safety, and dust explosion risks. The testing results showed Model II PEE has achieved excellent safety level.
Research on a Fiber Bragg Grating Strain Sensor for Tower Vibration
Authors: Geng Jin Feng , Cai Hong Sheng , Wei Yong Tao , Shen Xiao Huan , Dong Jun Wei
Published: January 2014

In order to monitor the key parts strain of tower vibration, design a fiber Bragg grating strain sensor, and introduce its structure, encapsulation process and temperature compensation method.
Design of High-Speed Communication on the Detection Equipment
Authors: Zhang Wei Xin , Bai Wei Bing , Li Lin Tao , Hu Ji Wen , Feng Chao
Published: January 2014

After the equipment of a new equipment, the cambat effectiveness has been greatly improved. The lack of a intelligent fault diagnosis system delayed the generation of equipment support ability, so a kind of detection equipment which can intelligently and quickly diagnose the fault was urgently needed .Based on the field programmable gate array (FPGA) and ARM platform, this paper gives a design of a high-speed digital processing detector. Using the serial communication, it can not only transmit a variety of common signal at a high speed, but also eliminate the interference between the transmission lines. As serial communication has no synchronous problem, there's more room to improve the transmission speed.
Design of Control System of Brushless DC Motor Based on DSP
Authors: Duan Li Na , Zhao Jin
Published: January 2014

The System is at the core of TMS320F2812DSP from TI company to design the control system for BLDC motor, the control segment of it take advantage of the event manager EVA of the DSP to compare and produce six ways signal control.And utilize the capture module to acquire the state situation of the rotor-position sensor.Acording to the condition of hall sensor to control motor commutation.And solve the PWM signal system in the generation and motor speed feedback.It's easy to realize the motor closed-loop control, greatly simplify the system hardware design, improves the reliability of the system, reduces the volume of the system. Through the experiments,we gain the PWM waveform, and finally realize the purpose of reverse control .
The Visual Analysis of the Research Front in Robot Field Based on Keywords Co-Occurrence
Authors: Yang Ming Hai , Wang Teng Fei , Zhang Zhen
Published: January 2014

The paper draws out the keywords co-occurrence maps in robot research field by CiteSpaceII, and analyze the hot-topics and the development trend in robot field by keywords co-occurrence frequency. The research found the hot-topics in robot field are mainly in the medical direction and manufacturing direction. This research can help us to grasp the whole development of the field and provide the decision making support for introduction of high-level talent.
PLC-Based Network Control System of Nitrogen Pressure Machine
Authors: Teng Wen Jian
Published: January 2014

In view of the existing problems in compressor control system, this paper introduced the applications of a PLC-based industrial Ethernet network control in the compressor, and had a full represent to the systems design and implementation process.
Service-Oriented Framework for Oil Fields Automation
Authors: Cardoso Moraes Eduardo , Augusto Lepikson Herman
Published: January 2014

The actual manufacturing enterprises are characterized by frequently changing market demands, global competition, rising require production systems concerning flexibility and adaptability, besides exigency for new industrial control systems providing lower time-to market and shorter product cycles. The inflexible communication infrastructure between the manufacturing process elements difficulties the adoption of porting production with high degree of reconfigurability and interoperability. The adoption of a service-oriented architecture (SOA) can bring real benefits to the industrial automation communication. Service-oriented architecture provides a flexible, open solution for manufacturing plants. Besides good endeavors proposed by consortiums and standard institutions, the market still shows the dominance of proprietary standards. In oil fields, managing the new technologies requires from the decision-making an integrated analysis of data that enables the understanding of interventions in the field in a comprehensive manner. For this, we propose a context-oriented framework to exploit Internet-based business models beside Service-oriented Architecture principles that relies on service oriented paradigm and open standards as, Webservices, XML, and Devices Profiles for Web (DPWS). This higher integration can affect daily oilfield operations, and the vision for an autonomous industrial automation as simple as plug and play.
Design of Temperature Controllor in Diamond Synthetic Chamber Based on Multi-Objective Particle Swarm Optimization
Authors: Hua Hong Yan , Zhao Cheng
Published: January 2014

Temperature control problem is a typical multi-constraint/multi-objective nonlinear programming problem in diamond synthetic chamber and it cannot be solved by conventional methods. This paper proposed a constraint multi-objective particle swarm optimization (CMOPSO) algorithm to solve the problem. Simulation results show that the CMOPSO algorithm can be used effectively in diamond temperature control and it has strong convergence optimization abilities for all different parameters and constraint conditions.
Research on the Network Based Protection to Settle the Distribution Networks Three-Phase Short-Circuit Faults with Distributed Generators
Authors: Xu Yan , Yuan Qin Cheng , Huang Xiao Yun , Jiang Lan
Published: January 2014

A model is established to research on the applicability of network protection in theory. In this model, distributed power generation with constant power (PQ) control mode which is equivalent to a voltage control current source is taken as the research object. Fault ride-through control theory is used to analyze the influence on the network protection exerted by three-phase short-circuit fault. In this paper, the equivalent model of the distributed generation is offered firstly. Then the three-phase short-circuit fault characteristics are illustrated based on the equations of the access points voltage and the distributed generations current. In the end, a simulation model is built to verify that the network protection can be applied to settle the three-phase short-circuit fault in the distributed network with distributed generation.
Research on Dynamics Measurement of Piezoelectric Sensor Based on PVDF Films
Authors: Zhang Qi , Li Ying Jun , Wang Gui Cong , Ma Ru Jian , Zhao Xiu Yun
Published: January 2014

A new type of upper and lower cover support structure piezoelectric sensor based on PVDF films is designed in terms of piezoelectric effect. Mechanics and mathematical models are established according to the structure of the sensor. The natural frequency of the sensor is derived finally. The natural frequency of the sensor is verified to meet the requirements of dynamic measurements by using theoretical calculations and simulations. The effectiveness of the calculating method is indicated.
Ceramic Filter against the Regeneration Air Pressure and Flow Control System Design
Authors: Diao Xi Lian
Published: January 2014

In view of the present diesel filter problem of air pressure and flow control, and designed a new type of filtration and reverse blowing control system, implements the filtration, regeneration of transformation. Using the computer as the core of the whole control system. Pressure regulation of electric valve control is implemented through the filter pressure feedback. The experimental results show that the control system has good steady-state performance, improve the efficiency of the filter.
The Effective Use in the Process of Numerical Control Technology in Mechanical Manufacturing
Authors: Yang Lian Fu , Sun Hong
Published: January 2014

With the development of the mechanical manufacturing industry, the traditional processing technology already cannot satisfy the needs of the development of the modern manufacturing industry. Numerical control technology has changed the situation. The rational use of numerical control technology in machining will play a crucial role to the development of modern industry. This paper analyzes application of numerical control technology in mechanical manufacturing, through the theory about the present situation of the application of numerical control technology, the development trend of numerical control technology points out the direction for the future.
A Method for Measuring Weld Bead in Grinding and Polishing Process
Authors: Zhao Jun , Zhao Ji , Zhang Lei , Fan Cheng , Han Fei Fei
Published: January 2014

Getting the real-time information of spatial data, height and length of weld bead is the key point during the process of grinding and polishing large-scale part. To tackle this problem, a robot visual system is completed by building the double CCD and the laser on the mobile robot. Combining the image search algorithm with the image preprocessing algorithm in time domain, the laser single pixel feature line is obtained. The positions of each point in feature line are optimized by curve fitting so that the right spatial data and dimension are obtained. The result shows the proposed method can provides the precise information of weld bead, and the accuracy of measurement is within 0.15mm, as steady as repeatability.
Servo Motor Control System and Method of Auto-Detection of Types of Servo Motors
Authors: Zhang Hao Ming , Peh Lian Soon , Wang Ying Hai
Published: January 2014

Mixture of DC brushed motors and DC three-phase brushless motors has been employed in complicated robotic systems, in order to control different types of motors may using commercial chipsets. Although these commercial chipsets are capable of driving different types of motors, the users are required to define the type of motors they are controlling through software. Defining the type of motors wrongly may damage the motors. Moreover, if a motor is replaced by another type, users would need to modify the software. The paper provides an auto-detection module that can be employed in a servo motor control system with a hybrid commutation control, wherein the hybrid commutation control can drive either a DC brushed motor or a DC brushless motor.
Multi-Axis Spiral Tool Path Generation for Aviation Blade Numerical Control Machining
Authors: Cao Yan , Wang Zhi Jie , Bai Yu
Published: January 2014

Aiming at the low machining accuracy, low efficiency, cumbersome programming process, strong empirism and great programming difficulty of special shape blades, a new NC spiral milling method of high-quality and high-efficiency is put forward to process aviation blades. Three methods of constructing spiral tool path are studied, i.e., constructing the spiral using interpolation in parametric domain, constructing the spiral based on a driving surface and projection technology, and segmentally constructing the spiral by plane intersection. By comparison and analysis, their advantages and disadvantages are presented. According to the characteristics of spiral milling, the principles and algorithms of interference-free cutter location calculation for space free-form curved surface are introduced and the focus is put on cutter contact point calculation algorithms.
Optimal Selection of Cutting Parameters in Blade NC Machining Based on BP Neural Network and Genetic Algorithm
Authors: Cao Yan , Dong Xue Jiao , Du Jiang
Published: January 2014

Blades are important components of aircraft engines. Free-form surface blade machining generally adopts sub-regional processing and cutting parameters vary greatly. Rational optimization of the cutting parameters can improve blade processing quality and efficiency in aerospace industry. To control the processing deformation of the blades, a method using artificial neural network and genetic algorithm is presented to optimize the cutting parameters. The method can reduce cutting parameter selection time and improve blade processing quality.
Design and Implementation of the Airport Surface Surveillance System Based on GeoTools
Authors: Li Jing , Wang Guo Qiang , Zhu Pan
Published: January 2014

Based on analyzing the existing airport surface surveillance technology, aiming at the defects and new demands to meet the increasing and more complex traffic flow at an aerodrome, a visualized expression and interaction system based on GeoTools of airport surface geographic information is put forward, surveillance of aircraft on surface is realized. Practical operation shows that the system is superior to the traditional method used for monitoring all moving targets on maneuvering area with low cost, and enhances visualized expression and interaction of airport geographic information.
Study on the Characteristics of the Automatic Tracking of Multiple Target Tracking
Authors: He Jing Feng , Ji Ming , Cheng Song , Wang Ya Nan
Published: January 2014

Based on introducing the traditional scan and single target tracking state, focuses on the automatic tracking characteristics of each stage under the condition of multiple targets. The two form of automatic tracking multiple targets, and the development direction of the future.
The Application of GA-RBF Neural Network Generalized Predictive Control Strategy in Circulating Fluidized Bed Unit
Authors: Liu Yin Bo , Ling Hu Jun , Li Jing Hua , Su Chun Yuan , Yuan Zhong Yang
Published: January 2014

Circulating fluidized bed boiler, with heat storage capacity, nonlinear, large time delay, multi-variable and strong coupling characteristics, is a complex quantity control system. It is difficult to establish accurate model when the parameters of control object is uncertainty because of all disturbances. This article uses one way to identify model based on genetic algorithm and RBF network combined with generalized predictive control strategy, through online rolling optimization and feedback correction, to achieve predictive control. The results of the simulation show that it has strong robustness when the load condition changes, the parameter changes or lag affects.
Novel Gas Diffusion Electrode System for Effective Production of Hydrogen Peroxide
Authors: Hou Yan , Kong Fan Gong , Wang Shou Juan , Yang Gui Hua
Published: January 2014

Hydrogen peroxide production via cathodic reduction of oxygen on self-made gas diffusion electrode was investigated in an undivided electrochemical system. The effects of mass ratio between graphite and PTFE in cathode, the calcination temperature, current density, pH, and plate distance on hydrogen peroxide generation were discussed. The results showed that the self-made gas diffusion cathode had high catalyze capacity for production of hydrogen peroxide using cathodic oxygen-reducing reaction. The hydrogen peroxide concentration could reach 80.52 mg·L- 1 within 2 h. The optimal conditions for this system are as follows: mass ratio of graphite to PTFE in cathode, 21, calcination temperature, 300 °C, current density,4.69mA/cm2, pH 13.0, and the distance between anode and cathode, 8cm. The high concentration of hydrogen peroxide generated gives a promising application of this novel gas diffusion electrode system in pulp bleaching and waste-water treatment.
Research and Design of Embedded Crane Video Transfer System
Authors: Leng Jian Wei , Dai Shai
Published: January 2014

This paper introduces design of embedded video monitoring system based on V4L2; system uses DM3730 as the hardware platform, with the Linux operating system as the software platform, chooses Boa as the embedded Web server. We use the V4L2 interface functions to achieve video capture under Linux, video data acquisition using the latest video coding standard H.264 encoding. The encoded video data transmits through wireless network, uses FFmpeg technology in the remote monitoring terminal to realize the video decoding and playing.
A Design of Model and Algorithm of Intelligent Scheduling System in Enterprise Railway Shunting Plan
Authors: Ge Bin , Han Jiang Hong , Wei Zhen , Cheng Lei
Published: January 2014

An intelligent preparation system model of enterprise railway shunting plan was described, and a station-based data structure was established. Through combining vehicle group and discussing route search method, a new thought of algorithm design and project of system implementation was given. A new strategy was proposed for optimizing model and algorithm of enterprise railway transport production scheduling.
Water Monitoring System Based on ZigBee Technology
Authors: Ou Jun , Yang Deng Pan , Pei Yun
Published: January 2014

The paper analyzes ZigBee technology. According to water monitoring, the system based on ZigBee is proposed. The system contains: perception layer, network layer, support layer, application layer. The design and implementation of the system are mainly discussed. Sensor network node deployment is used by Delaunay triangulation. The network layer transmits the water quality data based on ZigBee. According to the data which have been stored in the database, data reasoning will been finished through the ontology model created. The water quality level will been obtained by data inference. The system runs well by ZigBee technology.
Design and Application of Monitoring System of Remote Video and Environment to Smart Substations
Authors: Li Xiao Jing , Chen Zhen Huan
Published: January 2014

China is actively carrying out smart grid demonstration projects construction. As an important part of smart grid, substations remote video and environment system are increasingly becoming the focus of research, and playing an active role for the full realization of intelligent substation. The management of the existing substations in China, still require a lot of manual inspection, and the safety and prevention capacity of unmanned substation is not high, which can not meet the increasing demands of the substation. This paper aims to present the design and application of a monitoring system of remote video and environment to smart substations. Discusses in detail how to build video and monitoring information platform, the paper introduces the design principles and the structure of the system. It has greatly enhanced the safety and reliability of substation operation, and has achieved good results in the integrated applications of remote video and environment system.
Intelligent Smoke Temperature Alarm System Design
Authors: Hong Yun
Published: January 2014

This device is used to detect gas, butane, propane, methane, alcohol, hydrogen gas, smoke, etc. It is mainly used to implement intelligent monitoring environmental tobacco smoke temperature changes, and abnormal smoke concentration and temperature for alarm processing functions.
Research of the Misalignments Compensation in Optical Systems Alignment
Authors: Cao Yu Jun , Shang Jian Zhong , Luo Zi Rong , Jiang Tao
Published: January 2014

Computer-guided optical alignment technology requires adjustable lens, while such lens are rear for some optical systems due to structural limits. This essay focuses on using the compensation relations between misalignments to improve alignment accuracy. Firstly the influences from misalignments to wavefront error were researched and two-order compensation model of misalignments were built. Secondly, the essay developed an algorithm based on multi-fields merit function regression to calculate the misalignments of optical system, and the model was then simulated. Finally, practical alignment was tested. Result shows an increment of system MTF from 43% to 60% after the compensation process.
A Miniature Laser Processing System Based on xPC and Image Processing
Authors: Zhang Xiang Hui , Yu Hua Dong , Sun Zhan Wen , Yu Zhan Jiang , Chen Bing Yan
Published: January 2014

In order to control the miniature laser processing system, self-developed, a control system based on xPC and image processing is designed. For machining the miniaturization parts, through using xPC, servo drives and associated peripheral equipment, the hardware control platform was build, and then the file containing control information was created, trough processing the image. Through analyzing the results, it confirms that the miniature laser processing system based on xPC and image processing is suitable for the requirements of machining, and has the advantages of real time running, easy constructing, and handy operating.
The Development of Database System of Parameter and Coefficient for the Common Shafting Parts
Authors: Fang Hui Min , Zhao Gang
Published: January 2014

This article illustrates with the criterion of the common shafting accessorys design, using the Visual C++ and the Access to primarily set up the parameters and coefficients database of the shafting accessories, which are mostly the gear and the conical roller gearing. Setting up its function as demanding, appending and deletion, etc. Making the data processing for mechanical design and other fields conveniently. Through this research and exploitation, It can account for setting up the parameters and coefficients database of the standard accessory is necessary and really count for engineering.
The Impact of Filter Function on Structural Topology Optimization
Authors: Shang Zhen , Sui Yun Kang
Published: January 2014

Based on ICM method, topological optimization model is established to minimize the weight with different constraints. The model is solved by constraint integrated method. The impact of different filter functions on continuum structural topology optimization efficiency is studied by numerical examples. The results show that: The application of nonlinear filter function can speed up the convergence, reduce the number of iterations, get a good stability in the continuum structural topology optimization.
A Generalized BoVW Model for Content-Based Image Retrieval
Authors: Xu Wang Ming , Yang Hang , Fang Kang Ling , Liu Xin Hai
Published: January 2014

BoVW (Bag of Visual Words) Model has attracted much attention for many computer vision applications in which an image is represented by a histogram of visual words. Two of its critical steps are to construct a visual dictionary and to quantize each local feature to its nearest visual word in the dictionary. In this paper, we present the framework of a generalized BoVW (GBoVW) Model in which feature quantization can be replaced by sparse coding based feature encoding. We also propose to use spectral clustering to construct a visual dictionary to overcome the shortcomings of K-Means based clustering algorithms. Image retrieval experiments on ZuBud database indicate that GBoVW Model improves BoVW Model and the visual dictionary generated by spectral clustering achieves better performance than that by K-Means based clustering methods.
The Research and Application of USB Interface in the Design of FPGA
Authors: Yin Xi Peng , Li You , Cheng Wei , Chen Chang
Published: January 2014

The research of the communication between USB interface chip PDIUSBD12 and the data sampling system which is based on FPGA is introduced. And it gives a design method of a data acquisition system based on USB interface and FPGA technology. Both the logic relation and communication between USB and FPGA are studied. And it also provides the design method of the driving and application program. Finally, the simulation result proved that the method can not only achieve great agility and high speed, but also make the data communication interface rapidity and simplicity.
Key words: USB; FPGA; data sampling; driving program; application program
A XML Document Coding Schema Based on Binary
Authors: Gu Dong Juan , Wan Li Yong
Published: January 2014

In order to resolve the inefficiency for XML data query and support dynamic updates, etc, this paper has proposed an improved method to encode XML document nodes. On the basic of region encoding and the prefix encoding, it introduces a XML document coding schema base on binary (CSBB). The CSBB code use binary encoding strategy and make the bit string inserted in order. The bit string inserted algorithm can generate ordered bit string to reserve space for the inserted new nodes, and not influence on the others. Experiments shows the CSBB code can effectively avoid re-encoding of nodes, and supports the nodes Dynamic Update.
Research on E-Commerce Intelligence Based on IOT and Big Data
Authors: Peng Zhen Long , Huang You Lan
Published: January 2014

The computer technology together with network technology, communication technology have built a complex basic platform of computer network and a middle platform network which relate human to human, human to machine and machine to machine. Hundreds of millions of GB data generated from these platforms is stored in Cloud Computing Center. Based on this background, the paper analyzes the historical inevitability of IOT and big data, expounds the concept, process and methods of big data mining, and analyzes the natural relationship between big data mining and business intelligence. Through the deep mining of big data, its an unchangeable trend for us to grasp the user or personal behavior pattern and make marketing decision and overall consumption prediction, and then to achieve a comprehensive and advanced business intelligence.
Water Quality Data Analysis Based on Cluster Algorithm
Authors: Ou Jun , Li Shu Qing
Published: January 2014

In this paper, it has introduced cluster analysis of data mining algorithms in detail. Hierarchical clustering and partitioning method are emphasized. The principles of mathematics are elaborated. The monitoring system of water environment is composed of data collection, data transmission, data storage and data reasoning components. Cluster analysis applies to the data storage behavior. With the analysis, the key elements determining the water quality level are modeled easily. The modeling tools has created good quality information module, defining classes and attributes. It has reduced the database storage, analysis workload and prepared for effective ontology analysis.
Design of Intelligent Search Engine with Multiple Agents
Authors: Jin Hong Ying
Published: January 2014

Because traditional search engine has lots of defect such as return too much information or search result has little use, it is necessary to study on intelligent search engine. Base on the analysis of general search engine defects, this paper presents an intelligent search engine with multiple agent. Then, the structure and search process was discussed in detail. At last, the superiority of the new scheme was analyzed compared with the general search engine.
Design of an Internet of Things Intelligent Basket System
Authors: Huang Ke Wang
Published: January 2014

The paper focuses on design of an Internet of things intelligent basket system. The system is the public service platform with the internet of things technology which is used to buy the food, send the food and receive the food. The system includes two parts: server (web site) and the client (intelligent basket) and it can communicate between them.