bluuebunny/crossref_metadata_2025 huggingface dataset:
Continuous Hydrothermal Synthesis of LiFePO4 Particles in Supercritical Water
Authors: Wang Xiao Juan , Li Zhi Yi , Yao Sheng Hui , Liu Zhi Jun
Published: June 2014

Lithium iron phosphate particles were synthesized with supercritical water as a reaction medium, and the effects of temperature and pressure on particle purity and size were examined. A flow-through reactor was designed and set up with a SUS316L stainless steel material, and a large yield could be obtained with no preheated water involved. The products were recovered and characterized by X-Ray Diffration (XRD), Laser Particle Analyzer (LPA), and Scanning Electron Microscopy (SEM). Particles with an average size of 500nm could be obtained continuously.
Test and Analysis on the Heat Transfer Coefficient of the Mixed Plate Heat Exchanger
Authors: Tong Zheng Ming , Hou Peng , Qin Gui Hua
Published: June 2014

In this article, we use BR0.3 type plate heat exchanger for experiment,and the heat transfer coefficient of the mixed plate heat exchanger is explored. Through the test platform of plate heat exchanger, a large number of experiments have been done in different mixed mode but the same passageway,and lots experimental data are obtained. By the linear fitting method and the analysis of the data, the main factors which influence the heat transfer coefficient of mixed plate heat exchanger were carried out,and the formula of heat transfer coefficient which fits at any mixed mode plate heat exchanger is obtained, to solve the problem of engineering calculation.The fact , there is no denying that the result which we get has great engineering significance
Research on Simulation of Marine Refrigeration System Based on Simulink
Authors: Liu Yun Xin
Published: June 2014

A simulation based on simulink was set up to investigate the performance of marine refrigeration system. For the simulator focused on the operation and management, so the steady state simulation algorithm is to be used to build simulator of the whole system, it gives consideration to both efficiency and precision of simulation calculation, real-time of operation and management is increased. Compressor thermal model is simple, most of that use steady-state model with no iterative computation. Due to the need of teaching and simulation operation, we use lumped parameter method and partition method to establish mathematical model of Condenser, evaporator, expansion valve, evaporator pressure regulator, cold storage and other parts. True-time operation and the appraisal function has developed. The simulation result accorded well with the experiment result. This model precision is high and timely. It was acceptable used in the ships refrigeration system's operation.
CBRNE Fluids Sampling Subsystem for Mobile Robot
Authors: Gloger Michal , Novák Petr , Krys Václav
Published: June 2014

This article is focusing on hazardous area, where potential risk of human exposure by dangerous liquids or gasses could occur. The main idea is to prevent and avoid any accident what could happen to people, who have to do investigations in such potentially dangerous places. The European Security Strategy [ defines the five key threats: Terrorism, Proliferation of weapons of mass destruction (WMD), Regional conflicts, State failure and Organised crime. Threads are unfortunately widely spread all around the world while number of incidents and affected districts is alarmingly high, see [. The answer to question how to protect responders, security forces and investigators could be fully automated sampling device situated on mobile robot platform, which can collect samples from infected, dangerous hot zones (epicentres of incident) and surrounded areas and deliver them to laboratories. One of the key leads in designing process was procedure of manual gas sampling in mines carried out by miners and gas sampling methods described in [. Method and type of sampling was determined according of requirements of Central Mine Rescue Station (CMRS) and Chemical, Biological, Radiological, Nuclear, and Explosive (CBRNE) units. Concept was split to several parts. First division is active part or sampling core and passive element or sampling head. Second separation is according of fluid type to gas sampling (GS) and liquid sampling (LS). High priority is to obtain as modular, safe and easy - service device as possible. Prototype and calculation of compressed air consumption of sampling core is demonstrated in this article.
Analysis of the Accuracy and Robustness of Kinect Sensor Used with the Scope of Robot Manipulation
Authors: Moldovan Constantin Catalin , Staretu Ionel
Published: June 2014

This paper describes in details the evaluation procedure developed in this paper for the measurement of the Kinect sensors accuracy and robustness in the detection process of the user hand and recognizing human hand gestures. Furthermore, the results are transferred to a robotic gripper in virtual environment for visualization. The research started with consideration on the current state of the methods and sensors used for the detection of the hand gestures. It was seen that the detection of human hand and gestures recognition represent an important research study in the field of robotics controls and automation. Through the time, different methods [7, 13] and sensors [12] were developed for the action of detection which became, with the passing of time, better and better, reaching today, a point, when Kinect sensor was constructed as a combination between mature sensor technology and efficient algorithms for detection. The goal of this paper is represented by the analysis, if the XBox 360 (TM) Kinect sensor, developed by Microsoft, is accurate enough to be used as a mean to control a robotic hand in virtual environment. To find this out, the main objectives of this paper represents the measurement of the accuracy of Kinect sensor action for the capture of gestures performed by a human hand in a repeatable manner. As a second objective, in order to be able to visualize the result, the gestures are translated into virtual environment. In order achieve the main scope of this paper, two metrics were defined, according to ISO standard for measurement. Those are: Accuracy/Precision using ISO 5725: 1994 [16] Repeatability - ISO 21748: 2010 [17] The result of the captured hand posture with the highest accuracy are then moved to a robotic hand simulated in virtual environment executing an object grasping and releasing.
Utilization of the Oculus Rift HMD in Mobile Robot Teleoperation
Authors: Kot Tomáš , Novák Petr
Published: June 2014

This paper mentions some problems related to utilization of a head-mounted display (HMD) for remote control of mobile robots by a human operator and also presents a possible solution. Considered is specifically the new HMD device called Oculus Rift, which is a very interesting device because of its great parameters and low price. The device is described in the beginning, together with some of the specific principles of the Oculus 3D display. Then follows the design of a new graphical user interface for teleoperation, with main focus on visualization of stereoscopic images from robot cameras. Demonstrated is also a way how to display additional data and information to the operator. The overall aim is to create a comfortable and highly effective interface suitable both for exploration and manipulation tasks in mobile robotics.
Controlled Arming of Mechanical Systems Embedded into Embarked Electrical Systems
Authors: Negru Gheorghe
Published: June 2014

The paper presents an application of the Kalman filter to achieve the controlled arming of mechanical system embedded into embarked electrical systems (FMES). The solution of FMES which contain mechanical subsystems electronically controlled could significantly reduce the influence, on their functioning, of the general motion of high speed object (HSO) .
An Experimental Framework for Multi-Agents Using RTOS Based Robotic Controllers
Authors: Spirleanu Cristian , Vladareanu Luige , Diaconescu Eugen
Published: June 2014

Thist paper presents a framework for distributed application development containing autonomous manipulator robots, multi-agents based software and real time operating systems. The framework is structured on layers; this approach dissociates hardware from local control loops and high level global control strategy. In our implemented version, the working framework contains an original combinations of two robotic arms, MQX controllers using RTOS and a multi-agent JADE based platform running on PC. This structuring gives to the developer the ability to focus on specific individual modules development which then are integrated in a comprising system. The proposed modular distributed architecture favors reusing, fast refactoring and maintenance of the distributed system. The paper describes the overall structure of the framework, but also the features and functionality of its components. It also highlights the advantages of distributed control based on multi-agents and the flexibility of MQX RTOS controllers running robotic tasks. The interactions between software, controllers and mechanical systems in the time domain are also evaluated. Finally, the implemented strategies will be evaluated in order to be applied for the industrial field.
Kinematic Solutions of a 7 DOF Robotic Arm Using Redundancy Circle and Fuzzy Models
Authors: Crenganis Mihai , Breaz Radu , Racz Gabriel , Bologa Octavian
Published: June 2014

In this paper we have presented a method to solve the inverse kinematics problem of a redundant robotic arm with seven degrees of freedom and a human like workspace based on mathematical equations, Fuzzy Logic implementation and Simulink models. For better visualization of the kinematics simulation a CAD model that mimics the real robotic arm was created into SolidWorks® and then the CAD parts were converted into SimMechanics model.
Theoretical and Experimental Researches Regarding Multilayer Materials Used for Incremental Forming
Authors: Tera Melania , Bologa Octavian , Breaz Radu Eugen , Racz Sever Gabriel
Published: June 2014

Although this represents a relatively recent development in the industry, the composite multilayer sheets are currently encountered in almost all industrial domains, due to the density, mechanical strength and energy absorption properties that are higher than those of the blanks realised from a single material. These materials are useful especially in domains such a the automotive industry, where the vehicles must fulfil simultaneously conditions of increased passenger safety, increased comfort, increase of the loading capacity in conditions of a reduced energy consumption. First of all the paper shows the types of multilayer sheets and their areas and areas of use, then the paper analyzes the experimental results for an example of such a sheets namely bimetallic tables. The materials are subjected to tensile testing and we are determined limit deformation curves. The experimental result of incremental forming on a CNC milling machine bimetallic sheet is also presented.
Mesh Technique for the Finite Element Simulation of Acoustic Fluid-Solid Coupled Analysis
Authors: Neagoe Marian Bogdan , Cănănău Sorin , Mândrea Lucian
Published: June 2014

Noise and vibration analysis has become thoroughly researched in vehicle engineering where is needed to keep the noise level low and affect the vehicle users. The analysis in the paper shows a frequency response study where we will determine the frequency response on a coupled structure-fluid model. The study will be made on a simplified “train wagon“ model to show in a better way the differences between a perfect coupled structure-fluid model and a non-conformal coupling. The analysis shows that the distribution of the nodes for the two cases influences the results.
Analytical Determination of the CNC Machines High-Speed Feed Drives Position Loop Gain
Authors: Pandilov Zoran , Dukovski Vladimir
Published: June 2014

One of the most important factors which influence on the dynamical behavior of the high-speed feed drives for CNC machines is position loop gain or Kv factor. It directly influences the contouring accuracy of the CNC machines. Usually position loop gain is experimentally tuned on the already assembled CNC machines. This paper gives one approach towards its analytical calculation. The difference between analytical calculated and experimentally obtained Kv-factor is smaller than 5%, which is completely acceptable.
The Assisted Study of the Game Rules Deviations Using the Dartfish Video Platform
Authors: Păunescu Cătălin , Pițigoi Gabriel , Petrescu Silviu , Păunescu Mihaela
Published: June 2014

Taekwondo has always aroused an enormous interest among all the categories of citizens, but particularly among the young people. In 2013, the World Taekwondo Federation has counted 205 member countries and over 6 million active practitioners, while the world population practicing taekwondo has been estimated at 55 million practitioners. This study is based on records and video analysis of matches, captured and processed with Dartfish TV - Video Software Solution analysis software and visualized through SilverLight_x64.exe program. So, we analyzed 599 matches, among which 331 represented men’s events and 268 women’s events performed, during the 2012 World Junior Championship held in Egypt. The video analysis points to the fact that the most frequent rules violations are touching the fighting area deliberately or after the execution of a technical action, holding the opponent, getting out of the fighting area voluntarily or involuntarily. A 5%, that we consider significant, is represented by matches lost by accumulation of penalties. In conclusion, we believe that video analysis is one of the most advanced technologies, that can be successfully used in the sport training, as it helps maximizing the training process.
Modeling of Disk-Shaped Anode-Support SOFC with Proton Conductor Electrolyte and Sm0.5Sr0.5CoO3-δ-Sm0.2Ce0.8O2-δ Cathode
Authors: Zhang Qing Ping , Liu Wei
Published: June 2014

A concise model for disk-shaped solid oxide fuel cell (SOFC) with proton conductor electrolyte was developed by concerning relevant polarizations. Sm0.5Sr0.5CoO3-δ - Sm0.2Ce0.8O2-δ was taken as an example for cathode material. Proportions of each polarization were identified separately. Two important capacities, namely max power density and limit current density were discussed. Some suggestions to improve the cell performance were made. Comparison between proton and oxygen conductor electrolyte was discussed.
The Breakdown Characteristic Research of Polymer Materials in Liquid Nitrogen
Authors: Niu Tian Ye , Xu Dong Sheng , Wang Yi , Li Lu , Lan Qi , Zhang Qing Jun , Lu Yong , Jiao Hai Long
Published: June 2014

With the rapid development of superconducting technology, electrical properties of insulating materials in the low temperature have recently gained more and more attention. In this paper, the Alternating Current (AC) and negative Direct Current (DC) breakdown strength of polyimide (PI), polyester (PET) and polytetrafluoroethylene (PTFE) have been tested in room temperature and liquid nitrogen environment respectively by using different electrode system. The results show that the negative DC breakdown strength of these three kinds of material in the liquid nitrogen is lower than that in room temperature, and the AC breakdown strength of PTFE and PI in liquid nitrogen has a little increase than that in room temperature,but PET slightly decreases.
Controllable Synthesis of Monodisperse Metal Oxide Nanostructures via a Solvothermal Route and Their Catalytic Properties
Authors: Liu Ling , Zhang Xiao Jun , Liu Jian Zhou , Wang Rui Yu
Published: June 2014

The monodisperse Mn2O3 nanooctahedron, Mn3O4 nanorices, NiO nanoflowers and Cu2O nanoroses have been synthesized via a facile solvothermal approach in the presence of poly (vinyl-pyrrolidone)/stearic acid (PVP/SA) as capping agent. Field-emission scanning electron microscopes (FESEM) and X-ray powder diffraction (XRD) were employed to detect the prepared products. Furthermore, the synthetic method appears to be a general approach and other metal oxide materials with various well-defined nano/microstructures can be fabricated by the similar method. The as-obtained metal oxides nanostructures were used as catalyst in CO oxidation, and the octahedral Mn2O3 nanoparticles exhibited relatively high activity. Complete conversion CO to CO2 can be achieved at a temperature as low as 240 °C over Mn2O3 catalyst, which was about 70 and 100 °C lower than that of Mn3O4 and NiO, respectively.
The Synthesis and Application of the NaCl-KCl-K2HfCl6 Electrolyte
Authors: Liu Xu , Song Bo , Ke Wu Yan , Wang Li Jun
Published: June 2014

The NaCl-KCl-K2HfCl6 electrolyte successfully prepared by the reaction of HfCl4 with equimolar NaCl-KCl. Microstructure, surface morphology and components of the electrolyte were analyzed by XRD, SEM, and EDS. The results show that HfCl4 preferentially reacts with KCl when KCl and NaCl coexist or conversion relationship exist between Na2HfCl6 and K2HfCl6. The removal rates of oxygen reached 96.98%in electrorefining of hafnium attributed to high stability and low volatility of the electrolyte.
Three-Dimensional Wind-Induced Vibration Control Using MTMD Based on Energy Balance Theory
Authors: Lu Shan Lang , Fu Jian Fang , Zhang Jian Lin
Published: June 2014

In this paper, three-dimensional wind-induced vibration control is investigated by using multiple tuned mass dampers (MTMD). A 20-story steel frame is take as a numerical example to compare the two control effects by using MTMD and TMD (tuned mass damper), in which the same control masses are set on the top floor respectively. The parameters and locations of the damper devices could be chosen optimally based on energy balance theory and genetic algorithm. Numerical results show that the total damp value and the total structural dissipative energy of MTMD is lower than TMD while the total mass are the same. Meanwhile, MTMD also shows a better performance on reducing the along wind displacement and torsion response of the structure than that of TMD.
Analysis on Strength of the Frame of a Mine Dump Truck
Authors: Zhang Jun Feng , Deng Lin
Published: June 2014

This paper, taking a mine dump truck as the research object, analyzes CAE by the principle of the finite element’s inertia and finds out the initial problem of the design, thus optimizing the frame structure reasonably. Thereby it can reduce the cost of the production’s design and shorten development cycle of new models.
The Dynamic Loadings of the Solar Panel Mounted on Flat Roof-Top of Buildings by Wind Effects
Authors: Chen Jwo Hua
Published: June 2014

The dynamic wind loadings of solar panel mounted on flat roof building model were checked with a series of wind tunnel aerodynamic test. In this study the location and wind angle are controlled factors. The results shown that for the panel located near downstream area and its high end is facing the inclined oncoming flow might be the extreme condition, in which the panel is suffered by the highest up-lift forces. Beside the wind pressures coefficients, we have also calculated the co-spectrum of pressures signals at variant faces of panel and roof edges. With the results we found the high fluctuating and extreme wind dynamic loading on panel might come from the well correlation of building roof-top shedding vortices to the panel surface, not the separation shear layers by panel itself.
A Study on Cutting Glass Fibers by CO2 Laser
Authors: Wu Wen Hong , Chang Chun Li , Hwang Chi Hung
Published: June 2014

This The multi-mode fiber has been widely used in high data traffic applications since the transmitting rate of interface between data storages was larger than the capacity of fiber-optic communication with single mode fiber. The quality of end surface of fiber dominates the data transmitting efficiency. A good cutting end surface of single mode fiber can obtain by the traditional mechanical fiber cleaving methods. But, the multi-mode fiber has much larger core diameter than single mode fiber’s and the quality of cutting end surfaces which cut by the traditional mechanical fiber cleaving methods was not good enough. In the recent year, the pulse CO2 laser processing methods were introduced to cleave the fibers. In this research, a glass fiber laser cutting system was developed. The shapes of laser focusing spot and the concepts of laser cutting optical design were discussed in this paper. The experimental results show that the fiber cutting end surfaces with great quality, which were inspection by interferometer, can be obtained by the developed laser cutting system.
Enhancing the Piezoresistance Senstivity and Repeatability of Carbon Nanotube/Silicone Nanocomposites
Authors: Zhang Xiao Xiang , Ba Long
Published: June 2014

The nanocomposites of carbon nanotube/polymer have been studied to explore their piezoresistance properties, which can be used as smart materials in the fields like biomedical engineering, robotic engineering, and advanced instrumentation. The differences in piezoresistance behavior of the previous studies were explained by the less uniformity of carbon nanotubes. To clarify the resistance versus deformation relations for carbon nanotube/silicone rubber composite materials, we have fabricated composite materials with various nanotube and carbon black contents. The measurements show that the resistance versus deformation sensitive range is depends on both the content of nanotube and carbon black, while the tiny variation of content of the carbon black affects largely the total piezoresistance sensitivity and repeatability. The experiment shows that adequate amount of carbon balck mixed with carbon nanotube can improve the piezoresistance repeatability. The deformation induced variation of the conducting percolation network shall be the dominating mechanism for the piezoresistance behavior of carbon nanotube/silicone rubber composites.
Alloy Inconel 718 by 3D Micro-Electro Discharge Machining
Authors: Kumkoon Piyapong , Raksiri Chana , Jansuwan Chaiyakorn
Published: June 2014

This article aims to show the effects of the Micro-EDM process that influences the hole taper by comparing the parameters values during micro-drilling hole on the inconel 718 material. The condition of Micro-EDM drilling spark on the surface workpiece was 300 μm of depth and 200 μm of diameter tungsten carbide electrode. The experiment was carried out under the cover of hydrocarbon, using fluid dielectric cooling. The experiment parameters included on-time duty factor, off-time, voltage, frequency, and current, respectively. The experiment, it was found that the hole taper an immense effect on the machinability of drilling the workpieces, cause melting and recasting in the spark area, making a decrease in the ability of debris removal. Moreover, the experiment result, the tapered workpiece showed a minimized is 16.87 s, when using parameters at current 32 mA, frequency 150 Hz, and voltage 110 v, respectively. The optimal parameters to affected minimum hole taper is 0.195 degree, when using parameters at current 32 mA, frequency 130 Hz, and voltage 110 v, respectively.
Effects of Technological Conditions and Substrate Material on TD Coatings
Authors: Zhang Yan Jie , Chen Hui , Gao Zhang Yu , Li Shi Nan , Yu Hong Mei , Xu Wei , Yu Lu Ning
Published: June 2014

Thermal diffussion (TD) is a method of coating steels to improve the service life of materials and tools. With this process, high hardness of vanadium carbide coating is formed on the surface of materialsso that its wear, bite, corrosion resistance can be greatly improved. Since thereare still several problems remaining to be solved, this technology is still not widely used in our country and that limit the popularity of the salt bath technology. In this paper, these problems and their causes are discussed based on experiments, and several solutions are presented to hopefully provide suggestions for industrial production.
AHSS Auto Structural Metal Stampings: Crucial Role of Lubricant
Authors: Baluch Nazim , Norani Nordin , Mohtar Shahimi
Published: June 2014

To improve crash worthiness and fuel economy, the automotive industry is, increasingly, using Advanced High Strength Steel (AHSS). However, in recent years, stampers, particularly those serving the automotive industry, have begun to face new challenges related to the increased use of AHSS. Stamping AHSS can push the capability limits of some lubricants and often cause lubricant film break down and galling thereby increasing scrap rate and tool maintenance cost. This paper discusses the advantages of AHSS in auto metal stampings, highlights the new challenges faced by stampers, and delineates the exigency of draw lubricant in producing high quality auto stampings from AHSS.
Static Loading Tests of New Type of Bolt Assembly Connection Developed for Perspective Temporary Steel Railway Bridges
Authors: Karmazínová Marcela , Štrba Michal
Published: June 2014

The paper deals with the problems of the actual behaviour, failure mechanism and load-carrying capacity of the special bolt connection developed and intended for the assembly joints of the truss main girders chords of perspective railway steel temporary bridges. Within the framework of this problem solution, several types of structural details of assembly joints have been considered as the conceptual structural design. Based on the preliminary evaluation of advantages or disadvantages of these ones, in principle two basic structural configurations – so-called “tooth” and “splice plate” connections have been selected for the subsequent detailed investigation. This investigation is mainly based on the experimental verification of the actual behaviour, strain and failure mechanism and corresponding strength of the connection, and on its numerical modelling using FEM. This paper is focused only on the static loading tests results of the splice plate connections and their evaluation, which have already been finished. Simultaneously with the static tests, the fatigue loading tests are being realized, too, but they have not been finished so far, as well as the FEM numerical modelling.
Research on Horizontal Bearing Capacity of Precast Thin-Wall Steel and Spun Concrete Composite Pile
Authors: Wang Xin Quan , Zhang Shi Min , Liao Juan , Huang Ying Sheng , Liu Hong
Published: June 2014

Precast thin-wall steel and spun concrete composite pile (TSC pile) is a new type of steel-concrete composite foundation pile whose performance is between steel pile and concrete pile. 3D numerical analysis model of TSC pile was established by FEM software in this paper. By compared with the laboratory bending test results, the model’s reliability was verified, and then the bearing capacity of TSC pile under horizontal load was calculated, moreover, influences of different cross section parameters (diameter, wall thickness, steel pipe thickness, pile’s length) on the horizontal bearing capacity of TSC pile were studied. The results show that: with the increase of pile’s outside diameter, wall thickness of steel pipe, wall thickness of concrete pipe and length of pile, the horizontal bearing capacity of TSC pile is increased. The outside diameter has a biggest impact on the horizontal bearing capacity of TSC pile, then pile’s length, steel pipe’s wall thickness, and the influences of concrete pipe’s wall thickness are the least.
Numerical Simulation of Dynamic Response of Planing Craft Sailing in Calm Water
Authors: Su Yu Min , Li Yun Hui , Shen Hai Long
Published: June 2014

In order to forecast the sailing response of planing craft at high speed rapidly and accurately, CFD code Fine/Marine solver was used to calculate the resistance and sailing attitude of a high-speed planing craft, then the numerical results were compared with experimental results and empirical formula results. The results showed that resistance error calculated by Fine/Marine was between 5% and 10%, trim and heave results were in good agreement with experimental results, and had greater accuracy compared with the empirical formula results. The feasibility of this numerical simulation method was validated and this method provided an effect performance evaluation method for new designing planing crafts.
Neural Network Adaptive Control of Free Floating Space Robot with Actuator Saturation
Authors: Zhang Guo Liang , Lei Ting , Yang Fan , Cai Zhuang
Published: June 2014

This paper proposes an adaptive neural network law for trajectory tracking of a class of free-floating space robot with actuator saturation. Using neural network with global approximation, the control strategy design an on-line real time adaptive learning law to approach the uncertain model and the actuator saturation nonlinearity. The neural network approach errors and outside disturbance can be eliminated by a robust controller.The control strategy need not depend on the model, and can be used under actuator saturation.The control strategy can guarantee the stability of system and the asymptotic convergence of tracking errors based on the Lyapunov’s theory. The simulation results indicate that the proposed strategy can effectively work with actuator saturation.
Fault Diagnosis for Diesel Engine Cylinder Head Based on Genetic-SVM Classifier
Authors: Zhang Xue Liang , Xu Yun Jie
Published: June 2014

Fault diagnosis of Diesel engine cylinder head is very complex, so it is difficult to use the mathematical model to describe their faults. In this study, support vector machine trained by genetic algorithm based on high frequency demodulation analysis is proposed to fault diagnosis of Diesel engine cylinder head. Genetic algorithm is used to determine training parameters of support vector machine in this model, which can optimize the support vector machine (SVM) an intelligent diagnostic model. The performance of the GSVM system proposed in this study is evaluated by Diesel engine cylinder head in the wood-wool production device. The application to fault diagnosis for diesel engine shows the effectiveness o f the method.
Docking System and Power Management for Autonomous Mobile Robots
Authors: Acosta Calderon Antonio Carlos , Ng Buck Sin , Mohan Elara Rajesh , Ng Heng Khai
Published: June 2014

Mobile robots’ tasks depends the batteries to supply power. Automated mobile robots should manage its power to maximize the battery performance. Docking and recharging are crucial abilities to ensure the performance of the power system. This paper presents a complete solution for a power system to address the problem of power management and autonomously recharging of batteries for a mobile robot. The main two aspects in this solution are the power management including charging of the batteries and the docking system are described in detail. The paper presents results that shown the feasibility of the proposed docking station for autonomous recharging. A comparison of different batteries tested in this project is also presented in the paper.
The Design of Inertial Tracking System Based upon MEMS Sensor
Authors: Liu Kai , Qian Kun , Che Hua
Published: June 2014

Heading tracking technology is applied in many fields such as helm aiming, Virtual Reality etc. In this paper, one kind of orientation tracking system based upon MEMS accelerometer and magnetometer is designed. MCU can get the input data from the sensors through data bus, and upload the data to PC. The corresponding program is designed with Visual C++ to receive data and draw the 3D location in real time. The PC will adjust the attitude angle through Kalman filter. The experiment result show that the system is on operation well, and can be developed more function based upon it.
Application of GWS-1 Remote Equipment in the UHVDC Projects
Authors: Li Feng Long , Jin Wei Wei , Pang Ke Wei , Zhang Ling , Zhang Rui , Shen Yan Hong
Published: June 2014

The present situation of the UHVDC (ultra high voltage direct current) power transmission project is introduced, based on ±800kV UHVDC power transmission project put into commercial operation, the function design and application of GWS-1 remote equipment are carried out, the communication capability on IEC61850 is supported, the temperature problem of HP rx2660 is resolved, the GWS-1 remote equipment could meet the requirement of the UHVDC power transmission project is approved, and there is guiding significance on the research of RCI of UHVDC power transmission project.
The Operation Dispatch of Cogeneration Systems in the Deregulation Environment
Authors: Tsai Ming Tang
Published: June 2014

In this paper, an optimal strategy was presented to solve the operation dispatch of cogeneration systems in a deregulated market. With the load demand including steam and electricity, the operational model of cogeneration system was derived by considering the bi-lateral contracts and operation constraints. The objective function is formulated the profit-maximizing problem in the searching process. Sequential Quadratic Programming (SQP) was used to solve this problem. Test results verify that SQP can offer an efficient way for cogeneration plants to meet the load growth and promoted the competed ability of cogeneration plants.
The Locating and Sizing of Distribution Generation Based on the Distribution Network
Authors: Lu Xiao Qian , Xue Ying Nan , Mi Xiao Dong , Du Xin Hui
Published: June 2014

According to the national policy of energy conservation and emissions reduction, using renewable resources and new energy to reduce environmental pollution. Reforming power distribution network system for housing estate in taiyuan. Access to distributed power supply, researching the exact location and capacity. By analyzing the distributed generation of the impact of distribution network,the objective function including investment and operating maintenance cost, environmental factors, network loss costs; putting power flow , current, voltage, system capacity constraints as constraint conditions, Using particle swarm optimization (PSO) algorithm with inertia weight, determine the location and capacity of distributed power supply. The proposed method is testified on the IEEE-33 bus system,and get the reasonable installation position and capacity, the simulation results will be used in transformation housing estate in taiyuan.
Development of a Treadmill Platform for Dynamic Training with Vibratory Stimuli
Authors: Amate Flavio Cezar , Cassiano Onivaldo , Basile Felipe Rodrigues Martinez
Published: June 2014

The development of a method training based on vibratory stimuli was used in Russia since the 80’s. In this training a change occurs in Tonic Vibration Reflex (TVR) determining a reflex muscle contraction, originated from a local stimulus in muscle and tendon by vibration. The application of vibratory stimulus produces a state of greater neuromuscular efficiency, which increases the income of voluntary movements. The aim of this study was develop a prototype of a vibratory treadmill to assist on the walking training with the benefits of vibration. The device was adapted in Athletic Advanced Treadmill. The evaluation of the prototype was performed through comparison of reference values of ISO standards with acquired values by measuring instruments, being: strength g, frequency, amplitude, structural stability and resistance. In the statistical analysis of equipment tests was used Anova one-way and was observed a low variation of strength g and maximum amplitude was of 3mm being acceptable based on the limits of research conducted. Finally, the walking can be practiced safely and there is not displacement of equipment during implementation of the vibration.
Design and Development of Beverage Maker
Authors: Cai Deng Chuan , Chen Jian Fu , Chang Yen Wei
Published: June 2014

Nowadays, the instant beverage has been a necessary for daily life. The chain stores of instant beverages are popular in recent years. The sales volume per year of instant beverages reaches to US$ 133 million in Taiwan. The reason of the prosperity of the beverages in Taiwan is that the beverages are able to be made according to custom’s needs. So that the beverage can be fit to the custom’s favorite and habit. Therefore, for the considerations of safety, sanitary, and consistent quality, an instant beverage maker is needed to be developed. This study applied a systematical design procedure to develop and design the beverage maker. Firstly, marketing and technical survey, user needs and ergonomic analysis, and materials and methods of beverages investigation are conducted to determine the design requirements and specification of the product. Secondly, a series of design processes are proceed to develop the product, among them are concept design, mechanism design, ergonomic design, appearance design, 3D modeling and model making and testing. Finally, a new product is designed with the following features: (1) the instant beverage can be produced to match the favorite and habit of the customs; (2) the beverage can be produced with a high quality and stability, (3) the beverage maker with automatic processing functions thus saving manpower and manufacturing time; (4) this product with a friendly interface thus facilitating users to operate and clean it easily; and (5) the appearance is appealed and has high-tech and professional image. The newly designed product can be sold in Taiwan and the international markets. The design process and results of the study can be used a reference for product design and development.
Air-to-Water Heat Pump Monitoring in the Cold Climate Region
Authors: Koiv Teer Andrus , Ling Mariin , Tennokese Kaspar
Published: June 2014

This article gives an overview of the study on using the air-to-water heat pump (A&WHP) for heating buildings in cold climate regions. The study was conducted in a relatively cold region (59°N), where the ambient temperature during the winter usually falls below-20°C. Despite the fact the COP of the air-to-water heat pump in the winter period was 2.5 on average and during the heating season of 2013/2014 the additional energy requirement was less than 3%.
The Effect of Stress Wave on Dynamic Response of Square Thin-Walled Tube
Authors: Tan Zhu Hua , Zhang Bo , Zhai Peng Cheng
Published: June 2014

The effect of stress wave propagation on dynamic response of square tube was investigated by the experimental and numerical simulation methods in the present paper. The square tubes were subjected to the axial impact by split Hopkinson pressure bar. And the deformation process of each square tube was recorded by a high speed camera. Typical dynamic plastic buckling phenomena were observed in the experiments. And the numerical calculation of the experimental load case was conducted to analyze the effect of the stress wave propagation on the initial buckling of the square tube. The results show that there is obvious stress wave propagation in the square tube before the buckling of the square tube. And the initial buckling starts from the rear end of the tube due to the propagation of the stress wave. The relation between the stress wave propagation and initial buckling of the square tube was also discussed.
Using Term-Based Partitioning Framework on MongoDB and Elastic Search
Authors: Pyo Hye Jin , Jeong Hoon , Kim Nan Ju , Choi Eui In
Published: June 2014

It's a major issue that how can find worthy information in big data. Because big datacan be used in company's success according how to take full advantage of big data analysis. Currently, search technologies aboutbeing stored distributed and duplicated data does not need to strong consistency. Therefore, nowadays we utilize variety of storage based on NoSQL for allowing loosens of strict consistency. MongoDB and Elastic Search have been focused of search and store unstructured data. But they have weak points. So, in this paper, we are going to propose new framework using term-based partitioning which can make up MongoDB and Elastic Search’s limitations.
Optimal Policies for a K-Phase Service System with Bernoulli Vacation Schedule
Authors: Kuo Ching Chang , Ke Jau Chuan
Published: June 2014

This paper studies Optimal NT policies for a k-phase service M/G/1 system with Bernoulli vacation schedule. The system contains an unreliable server with a breakdown period and delaying period. The server determines to start service by the policy: the server reactivates as soon as the number of arrivals in the queue reaches to a predetermined threshold N or T time units have elapsed since the end of the completion period. There are k phases of service in the system. After the completion of k phases service, the server may take a short vacation or may remain in the system to serve the next unit, which is defined by Bernoulli vacation schedule. Moreover, we assume the server fails according to a Poisson process whose repair time follows a general distribution. In final, we analyze the system characteristics for each scheme and obtained the optimal NT threshold to minimize the cost function.
Image Trading Mechanism Based on Hybrid Watermarking Techniques
Authors: Yeh F.H. , Lee G.C. , Liao C.H. , Wang S.C.
Published: June 2014

This paper presents a novel image trading mechanism based on hybrid watermarking techniques. The removable visible watermarking technique is used to provide the safe preview of the protected media. The fingerprinting is used to trace the illegal distributor. Two kinds of watermarking techniques embed watermarks in DCT domain in order to conform to compression techniques. Experimental results show that image trading mechanism based on hybrid watermarking techniques can protect the image with high quality.
A Novel Parameter Estimation Method for Drug Diffusion, Distribution and Clearance in the Rat Brain Extracellular Space
Authors: Li Kai , Zuo Long , He Dong Qi , Han Hong Bin
Published: June 2014

Purposes to estimate parameters for gadolium-diethylenetriaminepentaacetic acid (Gd-DTPA) diffusion and distribution after drug delivery in the rat brain extracellular space (ECS). Methods An isotropic diffusion pattern in the homogeneous media was presumed for Gd-DTPA diffusion in the rat brain ECS, and a mathematical model was established to describe the pharmacokinetics of Gd-DTPA. Results the analytical solution of the diffusion equation was obtained by Laplace transform, and the least square method was utilized to calculate the diffusion coefficient (D) and the clearance rate (k) of drugs in the sphere coordinates. Animal experimental data of Gd-DTPA-related intensity was acquired by magnetic resonance imaging (MRI). D and k were computed as 0.0129 mm2/h and 0.0957 /h, respectively. Conclusions By the proposed method, drug diffusion, distribution, and clearance in the rat brain can be quantitatively analyzed, which will enhance our understanding of drug delivery in the central nervous system.
Microstructure and Mechanical Properties of (TiAlZrNb) N Films
Authors: Zhang Jian , Zhang Jun , Zhao Wei
Published: June 2014

(TiAlZrNb)N hard reactive films are prepared by multi-arc ion plating technology using the combination of Ti-18Al-11Zr (at%) and Ti-25Nb (at%) alloy targets. The high speed steel (HSS) is adopted as substrate. The surface and cross-fracture morphology, the surface compositions and the phase structures of the as-deposited (TiAlZrNb)N films are observed and measured by scan electronic microscope (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). The mechanical properties including micro-hardness, adhesion between film and substrate, friction and wear resistance and thermal shock resistance of the as-deposited (TiAlZrNb)N films are systemically investigated. The effects of deposition bias voltage and the addition of Nb element on the as-deposited (TiAlZrNb)N films are discussed. It is revealed that the comprehensive performances including micro-hardness, adhesion and friction resistance can be achieved by the (TiAlZrNb)N hard reactive film with deposition bias voltage of 150V.
Staged Cost Influence Factors Analysis on Power Transmission Project
Authors: Yu Xiao Yan , Liang Liang , Yu Min , Wang Feng , Song Zong Yun
Published: June 2014

In order to get the influence mechanism of every factor on power transmission project, the paper divided the project into four stages, namely: decision and feasibility study stage, design and bid stage, construction stage and completion final accounts stage. The paper applies the interpretive structural model (ISM) to analyze the function mechanism among the factors and final forms the interpretive structural diagram.
Correlation Analysis and Control Scheme Research on PM2.5
Authors: Liu Tian , Wu Mei Ping , Zhang Kai Dong , Liu Ying , Zhong Jie
Published: June 2014

The PM2.5 atmospheric pollution is becoming more and more serious. A lot of importance has been attached to its course of formation and control scheme. Especially the related research has been taken on the quantitative analysis and control. In this paper, a reasonable PM2.5 five years of treatment scheme is given for a city as an example. First of all, by using the correlation analysis, the correlation matrix of the city's 6 main AQI index were obtained on existing monitoring data. The correlation analysis is also taken on the PM2.5 and the other 5 primary AQI index. It gives the same conclusion, that is, PM2.5 is correlated with SO2, NO2, PM10 and CO. And the correlation is significantly linear. Then, by using stepwise regression analysis, the optimal regression equation about PM2.5 and 3 with comprehensive treatment and governance factors, PM10 SO2 NO2, is calculated. After converting the PM2.5 concentration into its AQI index for both the reference year and five years after target, the reference year's PM2.5, SO2, NO2, PM10 benchmark index value are also calculated. Then according to each of these 4 indicators of minimum changes, and still can meet the constraints, a nonlinear programming model and the nonlinear constraints are established and simplified as linear constraints. So, the model is transformed into a standard nonlinear programming problem. Finally, the possible annual average governance indicators are calculated. It Has a certain of practical significance for guiding the control scheme of PM2.5.
Effect of PZN Addition on Piezoelectric and Ferroelectric Properties of Pb (Zr1/2Ti1/2)O3 Ceramics
Authors: Promjun Tanabat , Sukprasong Saksit , Chumprasert Ladapak , Ngamjarurojana Athipong
Published: June 2014

Ceramics in the xPb (Zn1/3Nb2/3)O3−(1-x)Pb (Zr1/2Ti1/2)O3 [xPZN–(1-x)PZT] solid solution system are expected to display excellent dielectric, piezoelectric, and ferroelectric properties in compositions close to the morphotropic phase boundary (MPB). The dielectric behavior of ceramics with x = 0.1 − 0.5 has been characterized in order to identify the MPB compositions in this system. Combined with x-ray diffraction analysis, dielectric, piezoelectric and ferroelectric measurements, it was consistently shown that an MPB exists around x = 0.3 in this binary system. When x ≤ 0.2, the tetragonal phase dominates at ambient temperatures. In the range of x ≥ 0.4, the rhombohedral phase dominates.
Experimental Studies of Catalytic Hydrogenation of Isophthalonitrile for Meta-Xylenediamine Preparation
Authors: Li Yu Gang
Published: June 2014

With Raney nickel catalyst, the process of catalytic hydrogenation of isophthalonitrile for meta-xylenediamine preparation using aniline as the solvent is studied in this paper. The effect of the amount of catalyst, the reaction pressure and temperature is discussed. The results show that: on the conditions of the initial raw materials concentration for 2.0mol/L, the ratio of the catalyst quality and the IPN quality for 1/10, the reaction temperature for 100°C, the reaction pressure for 35bar, the reaction inhibitor NaOH for 0.6g and some additives, the reaction is conducted for 80min and the quality yield of meta-xylenediamine is up to 98.58%.