bluuebunny/crossref_metadata_2025 huggingface dataset:
Experimental Study on Counter Current Flow Limitation Based on Variation of Gap Size in Narrow Rectangular Channel during Quenching Process
Authors: Juarsa Mulya , Putra Nandy , Harinaldi Harinaldi , Antariksawan Anhar Riza
Published: June 2014

The Effect of gap size to counter current flow limitation (CCFL) in vertical rectangular channel was studied in this paper. Experiment was conducted by using two vertical plate with 1 mm, 2 mm, and 3 mm narrow gap. The initial temperature of plate was decided at 600oC. Flow rate and temperature of cooling water were controlled about 0.09 L/s and 90oC respectively. Non-dimensional superficial velocity for water is 0.05-0.09 and non-dimensional superficial velocity for vapor is 3.20-3.2. The result shows that the existence of CCFL in the vertical rectangular narrow channels. A new correlation for CCFL base on Wallis has been proposed.
A Permittivity Measurement Method Based on Cavity Perturbation Technique
Authors: Chen Qian , Yang Yang , Huang Ka Ma , Chen Cheng , Wang Kai Yong
Published: June 2014

Effective complex permittivity measurements of materials are important in microwave engineering and microwave chemistry. This paper describes a convenient laboratory method designed to obtain the permittivity for some materials. The hole for temperature measurement has been designed. The permittivity of materials at deferent temperature can be measured. The measurement results of the real part and imaginary part of the permittivity agree well with literature data at 2.45GHz.
On-Line Monitoring of Drill Wear Using Air-Coupled Audio Microphone when Drilling Composite Materials
Authors: Eneyew Eshetu D. , Ramulu Mamidala
Published: June 2014

The condition of the cutting tool when drilling composite materials is the controlling factor for the surface integrity of hole produced. The high rate of tool wear when drilling composite materials makes finding a way to monitor the condition of the cutting tool without interrupting the drilling process a great necessity. Inspecting the condition of the drill between or during the drilling process is not practical or economical. In an attempt to tackle this problem, a new approach of on-line tool wear monitoring method using an air-coupled audio microphone is proposed. An experimental investigation was conducted on multi-directional carbon fiber reinforced plastic (CFRP) composite material using a high speed steel (HSS) drill. The result shows that, the amplitude of the acoustic signal from the microphone decreases when the amount of flank wear increases and the amplitude of thrust force and torque increases with the increase of the flank wear. This result demonstrates that the proposed approach can be used as an effective and economical tool for on-line monitoring of cutting tool condition.
Application of Neuro-Fuzzy Inference System on Wood Identification
Authors: Vieira Fábio Henrique Antunes , Affonso Carlos , Alves Manoel Cléber de Sampaio
Published: June 2014

Searching for systems with intelligent, flexible, and self-adjusting solutions on imaging, which could provide the contraction of the human operators’ presence, a range of techniques is found. Each one of them can control the process through the assistance of autonomous systems, either software or hardware. Therefore, modeling by traditional computational techniques is quite difficult, considering the complexity and non-linearity of image systems. Compared to traditional models, the approach with Artificial Neural Networks (ANN) behaves well as noise elimination and non-linear data treatment. Consequently, the challenges in the wood industry justify the use of ANN as a tool for process improvement and, therefore, add value to the final product. Additionally, the Artificial Intelligence techniques, such as Neuro-Fuzzy Networks (NFN), have shown efficient, since they combine the ability to learn from examples and to generalize the learned information from the ANNs with the capacity of Fuzzy Logic, in order to transform linguistic variables in rules. Then, ANFIS plays active roles in an effort to reach a specific goal.
An Improved Particle Filter SLAM Algorithm in Similar Environments
Authors: Zhang Guo Liang , Yao Er Liang , Tang Wen Jun , Xu Jun
Published: June 2014

Because of the challenging data association in similar environments, a large number of particles are needed to improve the precision in particle filtering SLAM (simultaneous localization and mapping).An improved particle filter SLAM algorithm based on particle swarm optimization in similar environments is proposed. A multimode proposal distribution is acquired by combining the information of the odometry and the laser scanning. Particles are concentrated to the region of each posterior probability distribution maximum value by PSO. The performance of the conventional particle filter SLAM is improved. The simulation experiment results prove its effectiveness and feasibility.
Wind-Induced Response of ADSS during the Passage of High-Speed Train
Authors: Wang Yu , Gao Qiang , Wang Hai Lin
Published: June 2014

In this paper, the wind-induced response of the ADSS is analyzed when the high-speed trains pass by. The wind flow field of the high-speed train is simulated based on the three-dimensional Reynolds-averaged Navier–Stokes equations, combined with the k-ε turbulence model. The result is shown that the wind load acting on the ADSS is quite low and the stress of the line clamp increases a little.
The Research of Speech Recognition in Low SNR Based on GA-SVM
Authors: Wang Yong Qi , Zhang Hui
Published: June 2014

To improve recognizing rate and recognizing efficiency, the algorithm of double-threshold is adopted in the endpoint detection, Mel-frequency Spectral Coefficients is obtained as speech characteristic parameters, the SVM parameters, penalty factor and kernel function parameter, were optimized with genetic algorithm, then, an speech recognition model was established with GA-SVM method. The improved algorithm was simulated by matlab, the experiment shows that this algorithm can achieved good results in isolated word speech recognition.
Validity Analysis of Finger Vein Application in Identity Authentication
Authors: Yin De Sen , Zhang Xu Dong
Published: June 2014

Finger vein authentication is a novel biometrics technology for personal identification. In this paper, universality, collectability, acceptability, circumvention, uniqueness, permanency and performance of finger vein distribution pattern are analyzed. Thereinto, universality, collectability, acceptability and circumvention of finger vein pattern are described simply through the citation of relational literature, and uniqueness, permanency, performance of finger vein pattern are particularly studied by experimental means. The experimental result shows that there are favorable general performance for finger vein pattern in biometrics, finger vein can be applied effectively in personal identity authentication, finger vein identification technology have a well applying prospect and developmental potential.
Security Framework Using Forensic Function and Log Management
Authors: Kim Nan Ju , Jeong Hoon , Pyo Hye Jin , Choi Eui In
Published: June 2014

The explosive development of the IT field, the number of structured and unstructured data is increasing in geometrical. Also, using these data a number of cyber-crime has occurred. So, the security threat in many areas is a serious problem.The importance of Big Data and analysis techniques has been developing.But, efforts about security are showing a low level relatively.In this paper, we are discussed about security threat and security technology. And, we proposed a new security technique that complements traditional security techniques.
Community Structure Analysis in Social Network of Sina Weibo
Authors: Xu Sheng Wu , Zhang Xia , Xia Zheng You
Published: June 2014

Online social network is different from the traditional social network. it has distinctive characteristics, such as openness, anonymity, across the region, a high degree of interactivity and complexity. In this paper, community structure analysis in social network of Sina Weblog is analyzed and discussed based on directed network. According to the characteristics of Sina Weblog, We first constructed three kinds of network (such as follow-network, fan-network and all-network) and discussed degree distribution of weibo users. Then, structure and characteristics of Sina Weblog social network community is discussed and analyze based on the three network types on the. The experiments show that part and integral has the same properties, Degree distribution obeys power-law distribution, community has a small world and users are in accordance with six degrees of separation theory in Sina Weblog community. These research results verify that Sina Weblog has the structural characteristics of on line social relation network.
Research on Individuation Task Allocating Based on Team Collaboration
Authors: Gong Lin , Zhang Xiao Dan , Fan Bo Tao , Zhang Zi Jian , Xiao Yu
Published: June 2014

Team collaboration for project implementation has become the main pattern in modern work. How to allocate tasks to the right team member is the key for project completion. The paper firstly reviewed the related methods and concepts of team collaboration and knowledge sharing. Then the model of knowledge was built. Based on knowledge model, this paper built the model of the task and the team member. According to the knowledge background and project experience of team members, the paper proposed an allocation model which automatically allocated tasks in group work. Finally, a prototype system was developed for practical validation.
Some Properties of (Inverse)N0-Matrices with its Applications
Authors: Yang Chuan Sheng , Wang Hong Bo , Jiang You Fu
Published: June 2014

In this paper we study some combinatorial properties and inequalities of some classes of Z-matrices. These matrices arise in many problems in the mathematical and physical sciences. We show that all (inverse) N0-matrices are irreducible and some eigenvalue inequalities of (inverse) N0-matrices.
Advisory Software for Improving the Prevention of Dentistry Medical Conditions Arising from Chronic Diseases
Authors: Ramirez Paulo , Kawamoto Luiz Teruo , Slaets Annie France Frere , Amate Flavio Cezar
Published: June 2014

Prevention is the best way to seek quality of life and it means actions-oriented interventions to prevent the emergence of specific diseases, reducing their incidence and prevalence in the population. When the patient is properly diagnosed, the treatment, in many cases, will need, in addition to the dental professional, another specialist for a multidisciplinary work. Working together will provide to the patience an improvement in the alterations that the disease causes, including in the mouth. There are several ways of information available to the patients, however, not actively, seeking the patient, but passively and unordered. The purpose of this study is the development and validation of an advisory software for dental patients, guiding them on chronic diseases and their impact on oral health. Results showed that there was improvement in knowledge among patients.
Impairments of Working Memory for Object-Location Associations in Depression
Authors: Liu Peng Fei , Li Mi , Lu Sheng Fu , Wang Jing , Zhou Yu , Su Xing Yu , Zhong Ning
Published: June 2014

In this paper, we investigated the working memory for object-location associations of 11 depressions when they induced by different emotional pictures (positive, neutral and negative), and compared with a control group of 14 normal subjects. The results showed that there was no significant difference in the correct rate of associative memory between depression and control group (P > 0.05), however, there was significant difference in the memory retrieval time (P < 0.05), which suggest that the memory retrieval needs more time resources. These results indicate that depression has a normal memory encoding network, but an abnormal memory retrieval network for object-location associations.
Military Parachuting Injuries among Male and Female Cadet Pilots: A Prospective Study of 59,932 Jumps
Authors: Guo Wen Jing , Liu Xue Shan , Chen Yong Ren , Zhou Ji Qiang
Published: June 2014

To explore the injury mechanism and prevent injuries for the military parachuting of cadet pilots, this paper investigated the injury risk factors. A prospective study of 59,932 static line parachute descents by Chinese People’s Liberation Army cadet pilots (CPLACP), including 186 female cadet pilots with 391 jumps, was performed. Injury risk factors from administrative records included mental qualities, parachuting movements, surface wind speed, protective boots, and gender. Injury data were obtained from emergency room and hospital records. The study indicates that 153 CPLACP were injured, with a total of 168 injuries. The overall injury incidence on basic courses was 2.6/1000 jumps. About 79.7% of the injuries were located in the lower limbs. The most commonly injured sites were ankle and knee, which was 39.3% and 19.0%, respectively, of all injuries occurred. Although the parachuting injury incidence of cadet pilots is smaller than paratroopers’, the potential risk for career-threatening or life-threatening injury is great. This risk can be reduced by appropriate training and attention to detail.
A Life Cycle Impacts Assessment of the Differences between the LNG Cement Mixer Truck and its Diesel Counterpart
Authors: Yin Ren Shu , Yang Yan Ping , Xu Jian Quan , Chen Yi Song , Tu Xiao Yue
Published: June 2014

In order to evaluate the potential environmental burdens of the liquefied natural gas (LNG) as a transportation fuel quantitatively, the life cycle impacts of the differences between a LNG cement mixer truck and its diesel counterpart were compared through the CML2001 assessment model, the results showed that although with a higher ADP elements, the LNG mixer’s overall normalized environment impact is obviously lower than the diesel mixer.
The Measurement of Technology Innovation Spillover Effect between Sections: A Case Study of Tangshan
Authors: Li Bao Zhu
Published: June 2014

In this paper, we focused on the measurement and demonstration of technology innovation spillovers effects between sections. The forward R&D flux coefficient matrix model and backward R&D flux coefficient matrix model are established based on the input-output model, and then the beneficiary’s effects and contributor’s effects of ten leading industries within the Tangshan City are calculated. In the end, we found that the oil and natural gas industry got the highest score. The result can be used to make better suggestions for management of Tangshan regional innovation system.
An Exploration of Success Factors for the Comprehensive Construction of a Shopping Area from the Consumer Point of View — A Case Study of the Business Area of Sanyi, Miaoli
Authors: Ku Meei Yuh , Lo Kui Hsing , Lin Wen Tsann
Published: June 2014

With the development of Taiwan’s economy and increasing revenues of the people, people are increasingly interested in tourism and leisure lifestyles. Local governments in Taiwan develop their own unique shopping areas based on the considerations of their own characteristics. Woodcarving works display commercial, artistic, practical, aesthetical, and other features. From the heyday of export and domestic sales, the global downturn, and the establishment of the woodcarving museum, the industry experienced changes like the business cycle. During this period of thriving export, every household in Sanyi was creating wood carving products day and night. Due to the flourishing export of the wood carving industry of Sanyi, outside wood carvers came to Sanyi and introduced new artistic styles, resulting in different creative concepts of wood carving works. The majority of residents in Sanyi are Hakka, and over 50% of the people are engaging in the woodcarving industry. Presently, due to time, space, external, and internal factors, the woodcarving industry of Sanyi has gradually passed the heyday of export. Through qualitative and quantitative methods, this study analyzed the status and process of the development of the Sanyi woodcarving cultural and creative industry, as well as the change of marketing models. We explored whether emotional marketing methods can arouse the perception of consumption situations, and individual intrinsic emotions and feelings, while promoting proactive participation and purchase of woodcarving products to enrich the life of consumers. Moreover, this study discussed the depth and width of the impact on existing consumers and potential community members. By analyzing the woodcarving industry in Sanyi, Miaoli, as based on a conversion from the past, as well as current development and future vision, this study proposed marketing strategy suggestions as reference for the woodcarving industry.
Study on Modeling for Comprehensive Quality of Music Graduate Students Evaluation System
Authors: Cao Hong Mei , Cui Meng Tian , Jia Li Mei
Published: June 2014

The evaluation system about comprehensive quality of music graduated students was introduced in the paper. The methods of AHP were proposed to optimize evaluation system model. Meanwhile, the evaluation index system of the comprehensive quality of music graduate students is established. Then, the model was established and the solving was given according to the construction of evaluation index system principles. AHP is proposed to establish the weight of evaluation based on the receipt questionnaire survey from related experts. In the end, a example provided demonstrates the application in choice of the best student and it was proved that methods proposed is efficient to solve the optimization problems about the more complex, more fuzzy the decision management.
Computer Aided Design of Chinese College English Teaching Materials Based on COCA Corpus
Authors: Huo Yan Juan
Published: June 2014

As the flourishing of computer technology and the appearing of lots of large-scale and well-designed corpora and concordance software, corpus-based approach, an advanced teaching resources, has been widely employed in language researches of various fields and perspectives. English teaching material, the main source of language input, has the quality and authority in Chinese English language teaching classes. The present study attempts to bring about some innovations in construction and designing of teaching material on the basis of the Corpus of Contemporary American English (COCA). Moreover, the research is intended to effectively improve teacher’s input and introducing data-driven learning (DDL), and to effectively stimulate the motivations of students by using this computer-aided and COCA-based designing.
Simulation on the Vehicle Frontal Collision Based on the PC-Crash
Authors: Zhao Chang Li
Published: June 2014

The probability of frontal collision is the highest in the vehicle collision accidents, and crew injury mechanism of frontal collision is an attractive research subject. Based on the multi-rigid-body dynamics, a “vehicle-crew-belt” dynamics model is introduced, and software Pc-crash is used to simulate dynamic responses of this multi-rigid-body model by referencing basic parameters of FMVSS law. Dynamic response characteristics between the vehicle and the crew body are analyzed so as to expound the link between the vehicle movement and human-body injury. The result shows that a reliable evaluation of frontal collision is achieved, which provides a theory basic and practical reference for the research of accident injury.
Optical Properties and Zinc Nitride Thin Films Prepared Using Magnetron Reactive Sputtering
Authors: Feng Jun Qin , Chen Jun Fang
Published: June 2014

Zinc nitride films were deposited by ion sources-assisted magnetron sputtering with the use of Zn target (99.99% purity) on 7059 glass substrates. The films were characterized by XRD, SEM and EDS, the results of which show that the polycrystalline zinc nitride thin film can be grown on the glass substrates, the EDS spectrum confirmed the chemical composition of the films and the SEM images revealed that the zinc nitride thin films have a dense structure. Ultraviolet-visible-near infrared spectrophotometer was used to study the transmittance behaviors of zinc nitride thin films, which calculated the optical band gap by Davis Mott model. The results of the fluorescence emission spectra show the zinc nitride would be a direct band gap semiconductor material.
The Design of Detect Equipment of the Self-Propelled Artillery Hydraulic System Based on Data Fusion Technology
Authors: Liao Xue Bing , Huang Li Juan , Peng Lei , Gong Chang Hong
Published: June 2014

According to the detecting technical requirements of the new self-propelled artillery hydraulic system, the design of critical hardware components is described in detail. Online state testing, technical evaluation and fault diagnosis of multi-model hydraulic self-propelled artillery system is realized by using data fusion techniques and using fault diagnosis method on knowledge reasoning of multi-sensor data fusion based. After the trial, the device has strong comprehensive, good versatility and high stability of the characteristics.
Dynamic Simulation Analysis of the Crane Hoisting Process Based on Adams
Authors: Zhao Yi Fan , Sha Ling , Zhu Yi
Published: June 2014

Established the dynamics simulation analysis model of crane hoisting mechanism based on the theory of dynamics in Adams software, and then through the three dimensional model of lifting mechanism dynamics entities, the constraints, load, drive can be added, the motion law can be defined to simulation analysis the change of the force of wire rope, the change of displacement, velocity and acceleration of lifting weight in the lifting process. On the basis of the simulation results, it can make a great improvement for the structure of crane and provide a meaningful theoretical reference for the hoisting machinery innovation design.
Research and Design for the Calibrating Device of Self-Propelled Artillery’s Center Line
Authors: Yang Jie Min , Liu Chong Fa , Zhou Ren Bin , Gao Zhi Jun
Published: June 2014

Center line correction is an important work in the assembly and maintenance of self-propelled artillery. Targeting the complexity of centerline correction and low accuracy, a self-propelled artillery center line correction apparatus was developed on the basis of DSP technology. The device can directly display the thickness of the measured components that needed to be modified and adjusted. The measurement works in a simple and convenient manner, which greatly improve the measuring precision, and significantly accelerate the assembly and repair schedule. Through a simple transformation the correction device can be applied to the assembly and maintenance of other vehicles, featuring strong versatility and wide range of trial.
Design of Automobile Body Welding Fixture
Authors: Xu Liu , Ma Chao , Xie Xia
Published: June 2014

In automobile industry, automobile welding fixture is component important to auxiliary welding. The automobile body is welded by multiple complex sheet stamping parts and other auxiliary workpiece. In the process ,supporting role of welding fixture is an important step. In this paper, the fixture welding was designed and analyzed briefly.
Strain-Hardening Polyvinyl Alcohol Fiber Cement Optimization and Component Tailoring
Authors: Qian Rui , Bi Yuan Zhi
Published: June 2014

Study on the effect of liquefaction mechanism on the performance of ECC, adding rubber powder mesh size effect on the performance of ECC, respectively, to 40 mesh, 60 mesh, 80 mesh and 100 orders at the same content of rubber powder and 40 mesh in different dosage on ECC compressive strength, flexural toughness was analyzed, results show that: the use of the mechanism of liquefaction of mixing rubber powder in cement based materials, with the increase of ECC number increased ductility, at the same time reduce the compressive strength is larger, rubber powder content in 12%, the comprehensive effect is ideal. The needle for fiber reinforced cement based materials and meticulous research component, has broad prospects in the repair of future building early warning and lane.
Design and Research for a New Car Moving Device of Remote Control
Authors: Wang Jun Fang , Li Chao , Wang Dong Dong
Published: June 2014

In view of the fact that the complex control of car moving device, its small application range, the difficulty to reach the accurate location of vehicles and so on, therefor a new design and research for a car moving device of remote control is proposed; The Mecanum wheel is chosen to achieve the omnidirectional movement, so that the vehicle can reach the predetermined position quickly. The electro-hydraulic push rod is used to realize the automatic lifting ,and it is also convenient and efficient; In addition, AT89C52 microcontroller which cost less but can meet the requirements realize the control.
Research on Ni-P-Carbon-Nanotube Electro-Brush Plating Composite Coating Technology
Authors: Zhang Yu Feng , Wang Jian Cheng , Liao Xue Bing , Lei Jie
Published: June 2014

A film of Ni-P-Carbon-nanotube composite material is deposited on the surface of the metal substances by electro-brush plating. In this process, the composition of the Ni-P-Carbon-nanotube composite plating solution, the pretreatment on the carbon-nanotube and the effects on quality by the different brush plating technology conditions are investigated. The results shows that carbon-nanotube particles can be distributed uniformly in the coating by oxidizing, sensitizing and activating while the temperature of the plating solution should be controlled at 55°C, and PH value, 1.5~2.5. After the carbon-nanotube is added, the coating defects, such as the crack, the desquamation and the low bond strength, can be prevent effectively.
Effect of Addition of Sc, Zr, Er on Microstructure of Al-Mg Ingot to Generate Welding Wire and Micro-Hardness of Surfacing Layer
Authors: Wang Xiao Ming , Zhu Sheng , Zhao Zhi Hao , Wang Qi Wei , Zhang Min
Published: June 2014

Al-Mg welding wires applied extensively in aluminum alloy welding field.5183 ingot and 5356 ingot added Sc, Zr and Er were fabricated by DC casting method and extruded into welding wire, furtherly. Surfacing layer on 7A52 aluminum alloy prepared by using automatic surfacing formation system. Optical microscopy (OM) and 1600-5122VD MICROMET 5104 micro-hardness tester utilized to observe microstructure of 5183 and 5356 ingots, to measure micro-hardness of surfacing layer fabricated by using 5183 and 5356 welding wire with Sc, Zr, Er addition, respectively. The results indicated that, owing to addition of rare earth element, re-crystallization of Al-Mg extruded ingot to generate welding wire was restrained markedly; Microstructure was refined obviously when Sc added; And average size of the grains was about 10μm. Micro-hardness of surfacing layer improved after addition of Sc, Zr, Er element in the ingots.
Fault Diagnosis for the Electric Starting System of Self-Propelled Artillery Based on Information Fusion Technology
Authors: Liu Chong Fa , Xie Zheng Xi , Yang Jie Min , Gao Zhi Jun
Published: June 2014

Fault diagnosis based on multi-sensor information fusion technology processes multi-source information and data of the monitoring system in various manners such as detection, parallel and related processing, estimation, comprehensive treatment and so on so as to maximize the use of system knowledge and the information provided by the available detectable quantity of the system in fault diagnosis. Compared with the single sensor, multi-sensor information fusion enjoys obvious advantages in reducing information uncertainty, improving information accuracy obtained by the system and advancing system reliability and fault tolerance capability. As the accuracy of traditional fault diagnosis method is not high, considering the characteristics of faults in the electric starting system of self-propelled gun, a method of fault diagnosis is presented here based on network information fusion technology. The diagnostic process is divided into two level diagnosis, that is subsystem and system level. System adopts BP neural network in fault mode classification, while at system level D-S evidence theory is used in the process of synthetic decision evaluation on the entire system malfunction, ensuring accurate and fast fault diagnosis, which greatly shorten the corrective maintenance time.
Remote Sensor Lens Design Based on the Matching of Materials
Authors: Tang Tian Jin , Sun De Wei
Published: June 2014

Thermal characters matching optimization of the remote sensor lens materials determinates the thermal adaptive faculty of the sensor, therefore become the most important influencing factor which will decide whether the sensor can work. This paper analyzed profoundly the change of the material’s thermal parameters caused by the working temperature variation, and studied the principles and application of the athermalization manners, whose advantages and disadvantages are also exposited. Formulas are listed to illustrate the principle of the athermatilization which is realized through the reasonable matching of different materials. Design example is represented, athermatilization is achieved through the reasonable matching of optical and mechanical compensation, utilizing the difference of thermal characteristics between different materials, the design and thermo-optical analysis result are also given in the paper, the advantage of the system is the stability in the wide temperature which has no use for groupware to adjust the position of detector .Key words: materials, thermal characters, remote sensor, athermatilization, optical and mechanical compensation
The Research on the Current Situation of Micro-Grid
Authors: Ma You Jie , Yu Miao , Zhou Xue Song
Published: June 2014

Microgrid has become one of the most important adjuncts to solve the power system in some developed countries. This article aims to introduce the every country’s definition of Microgrid and its significance, discuss the key technologies in Microgrid research, including control technologies, management techniques and so on; Secondly, I summarize the key problems of Microgrid in current stage; Finally, discuss the trend of Micro-grid in the light of the current development status and problems.
The Overview of Energy Storage Technology
Authors: Ma You Jie , Lu Hong Kun , Zhou Xue Song
Published: June 2014

Power storage technology serves to cut the peak and fill valley, regulate the power frequency, improve the stability, and raise the utilization coefficient of the grid in the power system. This paper introduces various types of storage technology such as superconducting magnetic energy storage, super capacitor energy storage, sodium sulfur battery, lithium ion, flow battery technology, and discusses their advantages and disadvantages. The development trend and the different applications of storage technology in the power system are also summarized.
The Research on the Key Technologies in PV System
Authors: Ma You Jie , Wang Shuai , Zhou Xue Song
Published: June 2014

Nowadays,all countries around the world have made big efforts on the development of the PV system. As a recently emergent industry, the prospect of the PV system is very great. As a effective mode of using the new energy, the research of the related technologies of the PV system has make a very big progress. This paper makes an introduction about the related technologies of the PV system from two aspects of the controlling technology and the power electronics. And it makes a prediction to the trend of the key technologies.
Optimization Design on Subspan Oscillation of Multi-Conductor
Authors: Yang Jian Wei , Yu Zhu Ma , Luo San Qin , Chen Ping , Xiang Shi Jun
Published: June 2014

This paper is mainly focused on the analysis of the subspan oscillation to bundled conductors.The mechanics of subspan oscillation were analyzed. Considering anti-adsorption conditions and the amplitude 1imitations of sub-conductors, the calculating methods of largest subspan distance of bundle conductors were given. The mechanics of anti-subspan oscillation of spacer dampers was analyzed and a mechanical model of damping spacer damper was established. By calculating an engineering example, a real problem was calculated and evaluated, which was validated to be reasonable. Finally, a suit of calculation and simulation software was developed to facilitate the designers.
Magnetic Circuit Optimization Design and Simulation Analysis of Electromagnetic Inertial Actuator
Authors: Cao Hai Long , Yan Zheng Tao , Lou Jing Jun
Published: June 2014

This paper introduces basic working principle of electromagnetic inertial actuators and establishes the mechanical model of actuator. With the method of three-level series permanent magnet, the actuator structure design was completed. According to the structure of the actuator, the magnetic circuit model of actuator was determined, and the design of magnetic circuit was completed. Through the comparison and analysis, the type of both ends of the cage was determined. The simulation analysis of actuators’ magnetic field was studied by using ANSYS, and then the parameters were optimized. The parameters of the optimal solution are concluded, and a way to the actuator parameters is found. This provides a theoretical basis for the production, development of the actuator, and provides a train of thought for the design of the new type of actuators in active vibration control.
Analysis of the Solubility of TNT and RDX in TNT/RDX/SC-CO2
Authors: Ji Wen Su , Ding Yu Kui , Xu Yu Qiu
Published: June 2014

The solubility of TNT and RDX was measured in supercritical carbon dioxide fluid at 303.0, 308.0, 323.0, 338.0 K, and over the pressure range from 10.0 MPa to 50.0 MPa. This study examined the influences of extraction temperature, extraction pressure and support effect (SE) between molecules of TNT and RDX on their solubility in the TNT/RDX/SC-CO2 system. The results show that solubility of TNT and RDX in TNT/RDX/SC-CO2 ternary system is much higher than that in binary system. The values of SE of RDX and TNT increase first and decrease then with the pressure changing. The pressure turning point occurred over the pressure range from 25 MPa to 28 MPa for TNT and from 13 MPa to 20 MPa for RDX.
Research and Implementation of High-Speed Positioning Control Base on Feedforward PID Control
Authors: Wei Kang , Xu Xin , Deng Yu Shu , Chu Jin Xing , Yang Lu
Published: June 2014

Feedforward PID control of the current loop and speed loop based on the three closed loop PID servo control system was introduced here to improve the intermittent rotary positioning performance of the pick-and-place system. Feedforward PID control [1] is better than traditional PID control on command signal tracking under high-speed positioning control, which has been proved by Simulink simulation.
Motor Torque Stability and Controlling Research in Variable Load Condition
Authors: Cheng Yan Zhi , Ma You Liang , Chen Xi
Published: June 2014

The torque stability and shutdown control of electric learner-driven vehicle (ELV) in the condition of motor load suddenly changing make the ELV has the same clutch handling characteristics with the traditional vehicle, and this makes the ELV popularization possible. A special control method is put forward in this article to achieve the consistency with the mechanical properties of engine. A multiparameter control model to identify the real condition of clutch handling by driver is builded with fuzzy control law. The torque stability and shutdown control of the motor with the load raising rapidly condition are approached by the adjusting of armature voltage with PWM control law.
Keywords: Electric Learner-driven Vehicle;Torque Stability;Fuzzy Control
Design of Controlled Fire Bottle Filling Equipment of New Self-Propelled Artillery
Authors: Liao Xue Bing , Xie Shuang Xian , Zhao Hai Yan , Zhang Rui
Published: June 2014

According to the pharmacy filling technical requirements of controlled fire extinguishers of self-propelled artillery, a "time-controlled continuous filling" filling method was proposed, problem of the extinguishing agent mixed with the air filled with ice clogging pipes media is solved, and two extinguishing agent pressurized filling and optimal timing nitrided cast/cutting process control are implemented. After the trial, controllable fire extinguishers filled with equipment with comprehensive, secure, reliable, good stability, can greatly reduce the cost of equipment maintenance.
Development of NC Wire Cutting Automatic Programming System Based on Component Technology
Authors: Zhang Ying , Shi Xin
Published: June 2014

Based on analysis and research on the Wire cutting Electrical Discharge Machining process , developers could set up the whole system frame and each component mold ,as well as each component mold of function .At the same time ,developers researched the technique of Component Object Model , used the technique of Dynamic Link Library to realize the graphic input, used the technique of ActiveX to realize the code of Number Control imitation , established the whole database based on Access, successfully, realizing AutoCAD graphic input , taking the data processing and calculating the order of the cut, and then producing the postprocessing files, finally realizing all of NC code imitation .
Study and Application on 3D Printing Cloud Service Platform
Authors: He Le , Liu Cai Bin , Lu Hui Dong , Peng Yuan
Published: June 2014

Development of 3D printing technology rapidly and widely used in machinery manufacturing. 3D printing business is much, but the efficient equipment is deficiency. Methods of 3D models collecting, processing and online displaying were studied. A 3D printing service platform was constructed based on Cloud computing technology. The service program was developed by ASP. The background of the platform was managed by MySQL database. CAD files were displayed on a HTML5 browser by WebGL. A 3D printer owner released the 3D printer information, users searched printers and uploaded models data. The models were manufactured by remote online printers. The platform provides excellent products manufacturing environment for 3D printer owners and users. Products and printers are full information sharing. The economic benefit is rich.
Study and Implementation of Index Mechanism for GML Data
Authors: Yao Ya Juan , Tian Fang
Published: June 2014

GML is the encoding specification of geospatial data, more and more geospatial data are represented in GML documents. It’s efficient to use database technologies to manage and maintain the geospatial data described by GML. The index in a database can help to locate the tuples for a query. In order to query GML data efficiently, appropriate index structure should be designed. In this paper, a method to build path index for the GML document is proposed based on its storage schema. The path index records the sequences and levels of elements in the GML document. Tuples stored in tables can be quickly located for a query with the path index, and the structure information recorded in the path index can help to reconstruct the GML document.
Preliminary Review of the Influence of Cavitation Behavior in Creep Damage Constitutive Equations
Authors: Yang Xin , Xu Qiang , Lu Zhong Yu , Barrans Simon
Published: June 2014

This review paper mainly consists of from two aspects: (a) the evolution of the cavitation damage equation from Dyson to current application in high Cr steels by traditional techniques; (b) quantitation analyses of cavitation behavior in brass, copper, dual phase steel from X-ray microtomtograph. Though there is a lack of experimental data for high Cr steels by X-ray microtomography currently, but (b) has provided reference value for studying creep cavitation behavior in high Cr steels. This paper will be the fundamental of development new creep damage constitutive equation through quantitation analyses of X-ray tomography.
Research on Technique to Identify and Process the Fluorescence Picture by Computer
Authors: Zhou Ren Bin , Liao Xue Bing , Zhang Yu Feng , Zhang Zheng
Published: June 2014

The picture collected by CCD camera usually takes surface interference informations, such as pollution and surface reflection.etc, in the meantime because of being subjected to light source and CCD camera oneself intelligent degree the influence of etc. factor, the ineluctability exists some yawp voices in the picture.For the sake of convex leak parts of pictures now, have to clean yawp voice and interference information, reserve true leakiness trace. This paper filters a processing, edge to withdraw towards identifying according to the calculator fluorescence picture of picture, and picture ash degree two values turned the selection method and fluorescence signal calculation method of threshold value to carry on a study.To fluorescence oil liquid seep into the examination carried on an experiment research, the realization seeped into the quantity of quantity to turn a calculation, to seep into the quantity carry on a precision examination, and carried on analysis as a result to the test.
The Influence of Friction Coefficient on Tenon/Groove Contact Performance in Nickel-Based Turbine Blade-Disc
Authors: Zhou Guo Cai , Wen Zhi Xun , Yue Zhu Feng , Gao Yu Fen
Published: June 2014

This paper presented the influence of crystallographic orientation and friction coefficient on the contact stress and fatigue life in the tenon/groove contact region. A rate-dependent crystallographic plastic slip theory was used to calculate the contact stress and fatigue life in [001], [011] and [111] orientations. In the calculation, complex loading conditions and different friction coefficients of 0, 0.2, 0.4, 0.6, 0.8 and 1.0 were taken into account in tenon/groove. Then the relationship between contact stress, fatigue life and friction coefficient was discussed. Simulation results show that: friction coefficient and crystallographic orientation have significant effect on contact stress and fatigue life. Contact stress in [001], [011] and [111] orientation increases with increasing friction coefficient generally. For [001] and [011] orientation, the fatigue life decreases with increasing friction coefficient firstly. When friction coefficient is 0.4, the fatigue life meets its minimum. Then the fatigue life will increase with increasing friction coefficient. For [111] orientation, the change of fatigue life has no obvious trend, and while friction coefficient exceeds 0.6, the life almost constant.
Application of the Magnetostrictive Displacement Sensor in the Self-Propelled Artillery in the Performance Test
Authors: Meng Zhang , Wen Yan , Tao Li , Wei Jiang , Shuai Wang
Published: June 2014

Introducing the principle, which the magnetostrictive displacement sensor is based on, and the gauging to small shifting is given in this paper. These sensor possess the peculiarities of high precision, long-life and easy to assemble. The gauging to small shifting belongs to the major characteristics test to artillery. On account of the faultiness existing testing means, this method is submitted to the characteristics test of artillery. Which magnetostrictive displacement sensor is applied to the shifting measure. By means of tests, the conclusion could be given that this method is easy to operate, automatic, high testing precision and widely used.
Identification of Local Lubrication Regimes on Textured Surfaces by 3D Roughness Curvature Radius
Authors: Hubert Cédric , Kubiak Krzysztof J. , Bigerelle Maxence , Dubar Laurent
Published: June 2014

This paper proposes a new method of 3D roughness peaks curvature radius calculation and its application to tribological contact analysis as a characteristic signature of tribological contact. This method is introduced through the classical approach of calculation of radius of asperity in 2D. Actually, the proposed approach provides a generalization of Nowicki's method [], depending on horizontal lines intercepting the studied profile. Here, the basic idea consists in intercepting the rough surface by a horizontal plane and to calculate the cross section area without including “islands into islands”, i.e. the small peaks enclosed in bigger ones. Then, taking into account the maximal value of the height amplitude of the roughness included into this area, an appropriate algorithm is proposed, without requiring the classical hypothesis of derivability, which may be unstable when applied to engineering surfaces. This methodology is validated on simulated surfaces, and applied to engineering surfaces created experimentally, with a laboratory aluminium strip drawing process. The regions of the textured and lubricated specimens surface are analysed, and the results gives interesting prospects to qualitatively identify the local lubrication regimes: regions with high curvature radii correspond to severe contact (boundary/mixed lubrication regime) while regions with low curvature radii correspond to hydrodynamic lubrication regime.
Topographic Wear Monitoring of the Interface Tool/Workpiece in Milling AISI H13 Steel
Authors: Pereira Alejandro , Martínez Javier , Prado Maria Teresa , Pérez José A. , Mathia Thomas
Published: June 2014

The wear of TiCN coating carbide cutting tools (Sandvik® Grade 1010 and 4220) in different hard-milling machining conditions was monitored, analyzed, and discussed for AISI H13 steel. This material is commonly used in the forge industry in order to optimize the manufacturing process according to a qualimetry/cost compromise criterion. AISI H13 steel generally is used in modern production for high wear-resistant dies and molds. One of the most basic and primary geometric shapes in the manufacture of molds and die cavities is the geometry known as "inclined plane." Experimental investigations were carried out on a "mold model" design with the aim of analyzing and optimizing the principal manufacturing conditions. The tests are dependent on manufacturing factors, particularly their impactin a complex tribological process. Five clearly defined different surfaces of the hardened AISI H13 steel model mold, with appropriate geometries were studied; i) vertical downward; ii) curved downward; iii) horizontal; iv) curved upward; and v) vertical upward.The analysis of cutting tool wear during this process was based on computerized measurements of visually observable wear and power consumption. Morphological investigations of the surface topography for the cutting tool, as well as of the work-piece surfaces, were systematically carried out. Moreover, the interactions with simultaneously measured energy consumption during the process are also explicated in the present study and therefore tentative methods to optimize hard-milling machining are offered.