bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on Terpene Phenolic Compounds and its Health Effects
Authors: Yang Jian Qiong , Liu Hai , Peng Lei , Luo Guo An
Published: August 2014

Hydroxy derivatives of aromatic hydrocarbons, have hydroxyl getup directly attached to the ring, which is called phenols. This paper study the bioactivities and safety issues of Terpene Phenolic and its functions, characteristics and clearing strategies of terpene phenolic compounds, so as its biosynthetic mechanisms. The results show that the small amounts of water dissolved in phenol lower the melting point to below the room temperature.
Effect of Chemical Treatment on Multi-Walled Carbon Nanotubes/Epoxy Composite
Authors: Ji Jia You , Xu Man , Chen Chang Lian , Wang Ao Lin , Zhu Yun , Wang Liang
Published: August 2014

Multi-walled carbon nanotubes (MWCNT) was first treated by concentrated H2SO4/HNO3, and then epoxy (EP) was filled with as-received and acid treated MWCNT. Fourier transform infrared spectroscopy (FT-IR) was used to analyze the surface characteristics of MWCNT. Result of electrical conductivity analysis reveals that the surface treatment could affect the formation of conductive network. Dynamical mechanical analysis indicates that the loss factor of composite was impaired by the incorporation of acid treated MWCNT. The tensile strength was increased with the increasing content of acid treated MWCNT.
Study on the Sludge Dewatering Based on the Filtration Characteristic of Geotextiles
Authors: Li Lan , Cheng Bo Wen
Published: August 2014

The dehydration and minimization of sludge depended on filtering technology of geotextile is a hot issue in environmental project. By studying related process, the types, weaving forms, weaving structures and pore sizes of geotextile were tested. CPAM was the optimal flocculant with the dose of 90-110 mg/L and twill weaving geotextile with pore size of 0.5 mm was best. The final water content of sludge could drop to 40 %.
Effects of Ce3+ Addition on Granulation of Activated Sludge
Authors: Zhao Yu Xiao , Gao Min Tian , Liang Xiao Hui , Mu Hui
Published: August 2014

In this study the effect of Ce3+ on activated sludge granulation were first studied. It was found that 50 mg/l Ce3+ significantly promotes the granulation of activated sludge and more compacted smaller aerobic granules are formed. Additional Ce3+ has no influences on COD removal efficiency, but improved the SOP removal efficiency significantly. Although protein contents in extracellular polymeric substances increased along with granulation in both reactors, protein content in EPS of Ce3+-fed granules was higher than that without Ce3+ addition. Polysaccharide contents in extracellular polymeric substances decreased slightly through the experiment in the two reactors. Scanning electron microscopy showed that bacilli and cocci were dominant on surface of granules in both reactors. But there were more and longer rod-shaped bacteria on surface of Ce3+-fed granules.
The Application in Calculation of the Horizontal Wells’ True Thicknesses – An Example of Penglaiba Formation in the Northern Tarim Basin
Authors: Luo Xian Ying , Zou Wei Hong , Xiong Ran
Published: August 2014

Horizontal oil and gas drilling has become one of the most valuable technologies ever introduced in the unconventional drilling especially. Nevertheless, it is complex to calculate the horizontal wells’ true formation thicknesses in the dipping strata. Combined with the actual geological conditions and mathematical methods, a complete set of new formula was derived from the basic data of the strata dips, dip directions and individual layer data to calculate the true formation thicknesses, which could obtain the horizontal wells’ true thicknesses of Penglaiba Formation of Lower Ordovician in the northern Tarim Basin. And the calculation results were accurate. Calculated with this formula, the Penglaiba Formation’s true thickness was given, wells’ relative distributions were located, and the columnar section of Penglaiba Formation was spliced to discover the geological situation subsurface accurately. The columnar section of Penglaiba Formation in the northern Tarim Basin could provide a theoretical basis for reservoir prediction and the distributions in the low permeable beds. This is the key technical method to descript the palaeogeologic map.
Discussion for Block H-Matrices
Authors: Gao Hui Shuang
Published: August 2014

In this paper, a new sufficient and necessary condition for judging block strictly-double diagonally dominant matrices is given firstly. By this theorem, some new practical criteria for nonsingular blockH-matrices are obtained. In the end, the result effectiveness is illustrated by numerical examples.
New Criteria for Nonsingular H-Matrices
Authors: Han Gui Chun
Published: August 2014

The concept of quasi-double diagonally dominant matrices is introduced, and it’s equivalent representation is given. As its application, one sufficient condition for nonsingular H-matrices is obtained. The effectiveness of the proposed criterion for nonsingular H-matrices is showed by numerical example.
Study and Implementation on Computer Aided Innovation System Based on TRIZ
Authors: Gao Chang Qing , Zhao Fang , Yang Bo , Guo Wei
Published: August 2014

The aim of Computer Aided Innovation (CAI) is to support the engineer’s problem solving process with current design method and knowledge base. TRIZ is developed based on the patents analysis within the cross domain in the world and it is used in innovation design widely. Conflict Matrix, Effect, Standard Solution and Separate Principle are the key TRIZ tools used to resolve the inventive problems. And they can also be used for knowledge representation in the design system. As a Computer Aided Innovation System, Innovation Engine is developed and instructed. The effect of TRIZ methodology and CAI system can be proved with the case analysis of the cavity shape design of the rotor channel in the vertical shaft impact crusher. With limited power of electrical motor, there is a technical conflict in a vertical shaft impact crusher when requirement of improving break ratio of the stone materials. With the recommended principle (Curvature), the conception of a channel with a curvilinear shape can be gotten.
The Evaluation of Potential of Shale Oil Resources in K1qn1 Formation of Southern Songliao Basin
Authors: Wang Yan , Huang Wen Biao , Wang Min
Published: August 2014

Based on the analysis of source rock geochemical index, with K1qn1 Formation of southern Songliao basin as the research objective layer, it’s concluded that the mean TOC value of shale in K1qn1 Formation is higher, generally more than 1%, which belongs to the best source rock. Most of shale organic matter types are type I and type II1. The thermal evolution degree of organic matter is generally in the mature stage: a stage of large hydrocarbon generation. With logging geochemical method applied, the calculated total resources of shale oil in K1qn1 formation are 15.603 billion tons. The II level of resources are 8.765 billion tons, which is more than 50% of the total resources. The I level of resources are 4.808 billion tons while the III level of resources 2.03 billion tons. Overall, the southern Songliao Basin still has a certain degree of prospecting and mining value.
Very Exceptional Group
Authors: Liang Xiao Yu , Zhang Xin
Published: August 2014

A finite group is called exceptional if for a Galois extension of number fields with the Galois groups , the zeta function of between and does not appear in the Brauer-Kuroda relation of the Dedekind zeta functions. Furthermore, a finite group is called very exceptional if its nontrivial subgroups are all exceptional. In this paper，a Nilpotent group is very exceptional if and only if it has a unique subgroup of prime order for each divisor of .
Graphical Logic Paradigm and Reasoning Process Research
Authors: Long Ren , Zhang Yi Ting , Wang Yu Hui
Published: August 2014

Through the mental models, mental logic and raven's graphic reasoning test research, this paper deduced a series of graphic reasoning paradigm, and summarized the process of graphical reasoning. Through the demonstration of problem difficulty experiment and written report experiment, confirmed a high relevance between the graphic logic steps iteration and species and questions difficulty. Furthermore, reasoning order and default graphical reasoning paradigm have a high degree of agreement. Confirmed the rationality and widespread adaptability of graphic reasoning paradigms.
Development of the Monitoring and Early Warning System for Agricultural Market Information Based on Android Smart Phone
Authors: Xu Shi Wei , Li Zhe Min , Zhang Jian Hua , Kong Fan Tao
Published: August 2014

Monitoring agricultural market information is the foundation of modern agricultural economy and management. In order to improve the efficiency and accuracy in monitoring and early warning agricultural market information, it is necessary to develop a monitoring and early warning system based on Android smart phone, which standardized collects and analyzes comprehensive agricultural market information. The system consists of two components, a Data Acquisition Platform (DAP) and a Center Control Platform (CCP). Combined with agricultural standards, the DAP are located at agricultural market places, and each DAP is equipped with Android smart phone and DAP system, which includes ten kinds of agricultural market information through manual inputting DAP and then sends the collected agricultural market information to CCP via 3G, GPRS or SMS communication link. The function of the CCP is to receive, store, display, and analyze the database on line. It also provides functions like queries, early warning, and geographic information display. The system has been tested on field for nearly half a year (September 2012 to February 2013) in five provinces in China, this experimental results demonstrate that comprehensive agricultural market information can be achieved by our system, which can analysis price changes of agricultural products spatially and temporally in circulation domain through monitoring agricultural prices in farm field market, wholesale market, supermarket, and retail market. Based on the long-term monitoring database acquired by our system, the relationship among prices of different agricultural commodities can be easily analyzed. With the help of this system, researchers can judge the correlation of the occurrence of fluctuations in agricultural prices and local market conditions. Since the long-term database provides us with the details of the agricultural prices, the system allows us to control price fluctuations timely and maintain the stability of agricultural markets.
The Study on Shape Drawing Information Identify of Cooperating Neural Network
Authors: Liu Zhan Jun
Published: August 2014

The point of cooperating neural network is concluded. A identify model of cooperating neural network is constructed. The input and output design of shape drawing information is given , and the collection and deal of sample data is also given .Using cooperating neural network does the imitate sample of model . The identify result of satisfaction is given. The new field of the shape drawing information identify of cooperating neural network is opened.
The Design of the BP Neural Network Character Recognition in Matlab Environment
Authors: Li Wen Jie , Zhang Jie , Tian Ke Lun , Sun Hai Yan
Published: August 2014

This paper is based on the BP neural network, the identification method of character and the specific implementation steps were designed. Moreover, the method through the test form has been proved. The accuracy of character recognition is higher.
Research on the Mechanism of Combined Raceway Superfinishing Technique of Precision Bearing
Authors: Huang Zong Xiang , Li Mei , Li Bin , Huang Qian
Published: August 2014

This paper analyzes the mechanism of combined raceway superfinishing technique of precision bearing, via the relationship between coarse and superfinishing oilstone and raceway geometric accuracy, probes forming mechanism of raceway geometric accuracy under double oilstone pressure as well as auto dynamic control functions. Additionally, this paper analyzes the feasibility of combined coarse and superfinishing technique, brings forward practice methods and steps of combined finishing technique; discusses how to realize smooth transition of technique parameters, so as to reduce surface texture changes of working pieces, achieve assistant grinding of superfinishing oilstone, improve surface quality of raceway and decrease reflection error of superfinishing. Meanwhile, this paper adopts embeded technology to realize auto dynamic control of oilstone pressure, so as to effectively eliminate surface error resulted from oilstone raising and furthermore enhance surface geometric accuracy of precision bearing.
A Creative Development in Environment Engineering Education with Mind Mapping
Authors: Lin Chia Chia , Chuang Huan Ming
Published: August 2014

The purpose of this paper is to exploit student preference and propose, discuss and experimentally validate a strategy that aims to reduce time necessary to introduce tutoring of mind mapping to environment engineering students. A survey instrument was designed and used to collect student preferences about mind mapping. Preferences were linked to alternative scenarios of mind mapping deployment. Survey responses from a 60 second-year students from the Department of Environment Engineering and Management were analyzed using conjoint analysis. The findings of this paper provide a well documented framework in addressing mind mapping technique to engineering students. The proposed framework tries to make the best use of the available time for creativity development programs, in environment engineering departments. This framework may also be applied to other creativity enhancing techniques, providing solutions for incorporating creativity in environment engineering curricula.
Discussion on Construction and Management of Network Laboratory
Authors: Huang Le Hui , Zhang Xiang Qing
Published: August 2014

constructing first-class network laboratory is an important form of the union of industry-study-research. Perfect laboratory has vital significance in improving students’ creative and practical ability, teachers’ scientific research ability, and the level of teaching quality.
Educational Affordance of eTextbook in Primary Schools: A Case Study
Authors: Gong Chao Hua , Liu Bin
Published: August 2014

ETextbook has changed the practice of classroom teaching and learning and made the virtual classroom and reality classroom together. This study aims to explore educational affordances on eTextbooks within iPads. To address this research goal, this case study reports findings from a four-week pilot study of using eTextbooks with 6 teachers and 144 students in one primary school in Beijing. The results show that five educational affordances of eTextbooks, including individuality learning materials, annotations and note-taking, multi-dimensional representation of knowledge, multi-touch and various interaction, and control the progress of multi-media materials presentation. These educational affordances of eTextbook have implications for current and future developments in the pattern of teaching and learning in classroom.
Challenges in Hydrogen Fuel Cell Vehicles Commercialization
Authors: Ren Yuan , Zhong Zhi Dan , Zhang Zhi Wen
Published: August 2014

Current development in fuel cells and hydrogen fuel cells vehicles are first described in the paper, and then the paper gives up-to-date review of hydrogen fuel cell vehicle technological status and hydrogen infrastructure. Then the paper analysis barriers in hydrogen fuel cell vehicle commercialization and the cost reduction challenges especially in the material for catalyst and operational condition. Then in the end this paper gives the hydrogen fuel cell vehicles prospects and outlook.
Dynamic Characteristics Investigation on Hydraulic System of Power-Slipway for Combined Machine Tools
Authors: Qi Xi Juan , Ge Jun Qi
Published: August 2014

The power bond graph of hydraulic system of power-slipway for combined machine tools was built on the basis of analysis on its hydraulic system and actual working cases. Dynamic model of hydraulic system of power-slipway was built. At the same time, making use of Simulink, dynamic simulation of hydraulic system of power-slipway was carried out. Influence law of primary technology parameters on dynamic characteristics of the hydraulic system of power-slipway was expounded. The simulation results will provide theory basis for performance analysis and optimal design of hydraulic system of power-slipway for combined machine tools.
The Influence of Thermal Resistances and Nonperfect Regenerative Losses on the Performance of a Ferroelectric Ericsson Refrigerator
Authors: Yang Hui Shan
Published: August 2014

Using the finite-time thermodynamics, the influence of thermal resistances and nonperfect regenerative losses on the optimal performance of a ferroelectric Ericsson refrigeration-cycle is analyzed. Based on the thermodynamics properties of ferroelectric materials and a linear heat-transfer law, the inherent regenerative losses in the cycle are calculated and the fundamental optimum relations and other relevant performance parameters are determined. The ecological optimization criterion of the refrigerator is derived. The results obtained here may reveal the general characteristics of the ferroelectric Ericsson refrigeration cycle.
Design and Application on Multi-Function Construction Platform of Boom Type Road-Header
Authors: Zhao Qi Feng , Gao Wen Jiao , Zhang Wei Jie , Li Hong Tao , Liu Yuan Yuan
Published: August 2014

When the frame shield support was applied in the fully mechanized driving process of the seam gateway, there would be some incongruous problems. Aimed at the problems, mainly was discordance between the fully mechanized driving and the gateway support, we put forward the requirements of the multi-function platform and made the design scheme clear. By applying the finite element software, the simulation of the dynamics response was conducted on the multi-function platform. On this basis, an analysis was conducted on the stress of each loading part, the simulation results and mechanics calculations have shown the design of the multifunction platform could fully meet each technical index. The on-site applications have revealed that the platforms match with the fully mechanized driving machinery rationally; provide a safety standing basis for the construction of the frame shield support. Further, the platform has improved the mechanization of the frame shield support and increased the support operation efficiency.
Simulation Research on Soft-Starting for AMT Driving Belt Conveyor
Authors: Li Yun Xia , Wang Zeng Cai
Published: August 2014

Automated Mechanical Transmission (AMT) is applied as a new starting device for belt conveyor in the paper. Simulation model of AMT driving belt conveyor is established in AMESim. Simulations of start-up process at first gear condition and shifting process from first to eighth gear are discussed. Belt velocity is accepted as the law of gearshifts to judge the moment of shifting. Simulation results show that AMT could achieve the purpose of belt conveyor’s soft-starting gradually. The belt appears short-time acceleration mutations during shifting process which results in the belt maximum tension, the driving pulley torque, and other parameters changing within their allowable limits. The belt maximum tension appears short-time mutations when the clutch is just engaged, in which case the peak value of belt maximum tension can achieve 110 KN approximately, and is less than its allowable limit. After shift actions, the belt maximum tension and other parameters curves tend to be stable.
Dynamics Analysis of 3-PPR Planar Parallel Mechanism Including Friction
Authors: Mei Ying , Gao Xiao Xue , Song Jie
Published: August 2014

In order to obtain actual dynamics equation of 3-PPR planar parallel mechanism, established mechanical model of kinematic pair including friction, carried on force analysis of 3-PPR planar parallel mechanism including friction. Then according to the Kane equation established the dynamics equation of 3-PPR planar parallel mechanism including friction.
Modeling and Solving of Non-Linear Vibration Model of the Multi-Clearance and Bend and Torsion Coupled Gear-Driven System
Authors: Han Xing , Li Chang
Published: August 2014

Comprehensively taking the effects of variable rigidities, tooth flank clearances, bearing clearances, contact rigidities, and other multiple non-linear factors into account, it built a bend and torsion coupled gear-driven system’s dynamics analysis model in use of lumped mass method. After dimensionless dealing, it solved this dynamic model by the method of fifth order adaptive variable step (Runge-Kutta) method, and then it obtained system vibratory responses’ time domain diagrams, frequency domain diagrams, phase map, Poincare diagram, fast Fourier transformation (FFT) diagrams, and system branch diagrams under different parameters. All of them analyzed the effects of parameter variations on gearing system’s dynamic characteristics, and it provided a foundation for gearing system dynamic optimum designs.
A Prevalent Error in Optimization Design of Helical Springs
Authors: Li Yong Xian , Chen Song Ping , Zhang Wen Qiong
Published: August 2014

This paper reveals the popular error and problem in optimization design of helical springs. Most of the engineers and researchers regard wire diameter d, mean coil diameter D and number of active coils n as design variables in the mathematical model of optimization design for helical springs. In fact, only two variables are independent variables in the three design variables. The dependent variable in the optimization design model influences the behavior of the systems to be optimized, which is also possible to calculate wrong results. This paper analyses relationship of wire diameter d, mean coil diameter D and number of active coils n. To take number of active coils n as the dependent variable is reasonable. It can lead to wrong results to take n as the independent variable. The right independent variables in optimization design of helical spring are wire diameter d and mean coil diameter D.
The Application of UG Finite Element Analysis on Dynamic Load Analysis of Cable Pendulum Bar
Authors: Wu Xiao Qing , Xue Ji Ming , Zheng Ying Qiang , Wang Huan Gong
Published: August 2014

Cable pendulum bars need to withstand not only the gravity of ripe plug and cable but also the impact load of the shedding of ripe plug. In this paper, the cable pendulum bar was modeled and analyzed using finite element analysis by UG NX4, and stiffness strength check was carried out on cable pendulum bar. On this basis, the impact load were calculated and analyzed. The shearing stress of forced off cylinder’s block, strength of steel wire rope and the force of cable pendulum bar’s locking mechanism were checked with the shock loads, and the basic theory to design and development cable pendulum bar were provided.
Kinematics Analysis and Simulation of a Shaper Mechanism Based on UG NX8.0
Authors: Wang Li , Zhang En Guang , Wang Bo
Published: August 2014

MOTION module of UG NX 8.0 is embedded with powerful ADAMS solver which can integrate modeling, simulation and analysis together, and the mutual transformation of various softwares is no longer required. This paper models the truss structure of a shaper mechanism in UG, and conducts kinematics simulated analysis. And the result is consistent with the result of the classical theoretical calculation, which verifies the reliability of UG NX8.0 MOTION module in the rigid body kinematics analysis. This paper proposes that convenient and rapid information software of advanced manufacturing industry, instead of the traditional complex theoretical calculation method, should be promoted and applied to solve the practical problems of engineering design.
Review on Damage Identification and Diagnosis Research of Civil Engineering Structure
Authors: Ni Hong , Li Ming Hui , Zuo Xi
Published: August 2014

This paper first describes the importance of structural damage identification and diagnosis in civil engineering, and introduces domestic and foreign status of damage identification and diagnosis methods, and on the basis of this, it also introduces all kinds of methods for damage identification and diagnosis of civil engineering structures, and finally puts forward the development direction of civil engineering structure damage identification and diagnosis.
Structure Design of Car Overpass in the Urban Rail Construction
Authors: Chen Lei , Qiu Hong Sheng
Published: August 2014

The car overpass can play a significant role in easing traffic pressure. So for maximum easing traffic pressure, two types of car overpass are put forward: steel trussed girder-bridge and steel trussed cable-stayed bridge. Then establish a three-dimensional finite element model of the steel truss bridge and cable-stayed bridge by ANSYS. According to stress analysis and comparison of the steel truss and steel truss cable-stayed, the cable-stayed structure can enhance structural rigidity and strength, and have little influence on traffic.
Reliability Design and Test of the Vehicle Electronic Equipment
Authors: Yuan Sheng Rui , Dang Xun Yi , Yang Xiao Yu , Qu Long Bo , Zhan Zhan Yu
Published: August 2014

If there is no reliability, high-performance electronic devices indicator is no meaning. Reliability design, testing and verification methods of the vehicle electronic equipment are analyzed in this paper, and presented in the industry designed to improve the reliability of electronic equipment ideas, to regulate the reliability of electronic equipment designed to provide a technical basis.
Application of Improved Genetic Algorithm in Optimum Configuration of Viscous Dampers in Tall Buildings
Authors: Yan Le Wei , Wang Long , Huang Cheng Jun
Published: August 2014

In this paper, genetic algorithm is improved by relative fitness, offspring testing method and optimum reserve strategy. An optimum configuration method of viscous damper in tall buildings was presented. This method has strongly practicable in complicated optimization problem of viscous dampers involving many dampers and stories, large design space and lots of optional configuration schema which cannot be solved by exhaustive method. It is used to optimize the configuration of viscous damper in a 30 layers building. Numerical examples demonstrated the efficiency and applicability of the proposed method.
The Research and Application on Location of Distribution Center Based on Grey Theory and AHP
Authors: Dong Hai , Yan Jian Hua , Xin Heng Bao
Published: August 2014

Location of logistics distribution center is affected by many factors, so choosing an appropriate method to evaluate is extremely important. Location problem of logistics distribution center by using the method of AHP and grey theory is analyzed and evaluated, and the corresponding model is put forward. Finally, the examples show that the model can effectively deal with the location problem of logistics distribution center.
Analysis of Seismic Isolation Device for Earthquake Resistant Building Structure Reinforcement
Authors: Wang Ying , Bai Yu
Published: August 2014

To enhance the seismic performance by using the traditional method of building function, will affect the building using function. Therefore, not affecting the building using performance, the isolation device for seismic reinforcement, only through the underground part of the building project can solve these problems. In this paper, through government building envelope analysis and time history analysis, the seismic strengthening of building structures under earthquake action effects before and after the isolation device, fully explain the role.
A New Approach to the Weights of Predict Traffic Flow Based on Internet of Things Technology
Authors: Li Jia Yang , Li Bei Lei , Liu Zhi Hua
Published: August 2014

Prediction of traffic flow is an important content of intelligent transportation system and the basic of traffic organization. Due to the poor accuracy of single predicted methods, this paper used Grey relational analysis to determine how important of each predicted methods in combination model. Using test methods to try to get the best weight set. By a case, the conclusion showed this weighted method was very effective.
Application of the Internet of Things Technology in Food Safety Monitoring and Controlling System
Authors: Wang An , Zhang Xiang Qing
Published: August 2014

the internet of things, an important part of the new generation information technology, is known as a information industry wave after the computer, internet and mobile communication network, and has been included into the core area of Chinese strategic emerging industry. In view of unceasingly domestic food safety problems, the paper put forward the construction of food safety monitoring system based on internet of things technology, to promote resource-saving, environment-friendly society sustainable development.
Study on the Strategy of Logistics Industry Development in Gansu Province
Authors: Li Rong Hua , Wang Cui Lin
Published: August 2014

based on the current situation and problems about logistics industry In Gansu, analyze logistics industry these problems: Logistics infrastructure still needs to improve; Logistics overall level is low, it has affected the improvement of enterprise competitiveness; The scale of the logistics enterprises is generally small, its assets possession scattered;The compartmentalization of management system constraints;The professional talents in logistics enterprise lack and the professional quality is low; Logistics technology is backward, the information efficiency is low.Then put forward logistics industry development strategy: Speed up the construction of infrastructure; Strengthen the government's guidance and support of logistics industry;Cultivate professional logistics service enterprise,promote the development of third party logistics;Improve the modernization level of manufacturing enterprise production logistics system,build a public information platform,realize electronic commerce; Attach great importance to the human resources development and training;Develop green logistics.
The Study of Control Strategy for Sensor-Less PMSM
Authors: Chen Qing Xie , Chen Jing Jing , Fan Yi Biao
Published: August 2014

Targeting development of control system of a permanent magnet synchronous motor applied to high precision requirement, A strategy is researched to develop a single chip with built-in sensor-less control algorithm which is used as the control core of PMSM control system, the composition of the hardware and the realization of software of the chip are designed, and the simulation experiment is carried out to verify feasibility and rationality of the control strategy as well.
Dynamic Modeling and Model-Based Force Control of a 3-DOF Translational Parallel Robot
Authors: Gao Shu Hua , Fan Rui , Wang Dan
Published: August 2014

A 3-axis parallel loading mechanism, which works as a multi-axis load simulator, is proposed for reliability test of multi-axis CNC machine tools by exerting specific load spectrums on the spindle. To achieve efficient loading force control, dynamic model of the 3-DOF translational parallel robot is derived via the virtual work principle and is embedded into the control strategy to build a model-based control scheme. A mass distribution factor is introduced and the rotating inertia of the limbs is neglected to simplify the dynamics equations for better real-time control performance. This simplification method is verified by comparison with the complete dynamics model. Then the simplified dynamic model is integrated with a PI (proportional–integral) controller with feedforward to control the moving platform’s output force in the task space and this control strategy is verified through co-simulations with MATLAB/Simulink and ADAMS. Simulation results show that the proposed model-based PI controller is effective to control the three-dimensional output force of the 3-DOF translational parallel robot.
Application of Database Technology in Fault Extract for Shipboard Power System
Authors: Wang Yu Chao , Fu Hui Xuan , Yang Dan
Published: August 2014

The shipboard power system network dispatch automation was a recently developed technology which can effectively enhance supply and distribution electrical power system safe operation ability and reliability. With science and technology development, the shipboard power system is getting more and more complex, it is very important to extract the fault accurately and quickly. Based on the characteristics of the shipboard power system, the database technology was used to solve the fault extraction for the shipboard power system network. Simulation results showed it can satisfy real time request and process multi-fault situation appeared in the system and show all the fault branches information.
Control System Design for Continuous Grinding Machine for Working Stones
Authors: Zhao Min , Cheng Jun Feng , Yuan Bao Long , Han Song
Published: August 2014

The design of control system is composed of scheme, components, hardware equipment and software structure in continuous grinding machine for working stone slabs based on PLC, CCD camera and touch screen in the paper. Switch between manual control and autocontrol of grinding machine is realized through information acquisition from CCD camera, communication between PLC and touch screen. The electrical control measure of PLC is designed to substitue the traditional control circuit in order to realize non-contacting control. Control system of continuous grinding machine for working stone slabs is composed of the signal acquisition system, PLC and touch screen. The control system of grinding machine is more advanced and reliable, meanwhile production efficiency will be improved greatly.
New Method of Knowledge Acquisition of Aid Decision-Making for Missile-Launching
Authors: Ding Guo Bao , Xing Hao , Wang Lian Bing , Li Dan
Published: August 2014

Acquiring causal knowledge of abnormity is essential to Missile-Launching reliably. There are lots of Knowledge Acquisition methods. But it is absence for usage and maintenance support process. So it is necessary to start the research on new knowledge acquisition technology of aid Decision-Making for Missile-Launching. Based on the Usage and Maintenance-Support Process, this thesis acquires knowledge with the ESD and CESD (Converse Event Sequence Diagram) method. First, this thesis gives the concept of CESD. Then, in order to adapt the CESD model of the complex systems more effectively, this paper expands the CESD framework and provides a software frame of computer aided ESD study. Finally, the operation of pulse power supply system is analyzed on the basis of the improved ESD and CESD. This sample shows the applicability of ESD and CESD methodology in knowledge acquisition technology of aid Decision-Making for Missile-Launching.
Development of Test Bench for Durability of Ignition Coil Based on Labview
Authors: Du Ai Min , Chu Chu Chuan , Zhu Zhong Pan
Published: August 2014

The primary current, the secondary voltage and superficial temperature of ignition coil witness characterization of work performance of the ignition coil. In this paper an ignition coil testing platform based on Labview is developed. The real-time performance parameters of the ignition coil are acquired by data acquisition card,high voltage probe, STM32 micro controller which include the primary current, the secondary voltage and superficial temperature of ignition coil. The results indicate that the testing bench significantly improves the collection of ignition coil performance parameters.
Deformation and Stress Analysis of Flapping Wing Aerial Vehicles Based on Composites Model
Authors: Yu Chun Jin , Zhang Jin , Song Wei , Yi Ke Hong
Published: August 2014

Flapping wing aerial vehicles continue to be a growing field, with ongoing research into unsteady, low Reynolds number aerodynamics and micro fabrication. However research into deformation and stress of flapping wing continues to lag, especially based on composites model. One flapping cycle was divided into twelve segments, and maximum defmortion and stress were calculated in each segment. The results show that the maximum sdeformation at the beginning stages of downstroke is 19% larger than the maximum deformation at the beginning stages of upstroke, and the maximum stress at the beginning stages of downstroke is 29.9 larger than the maximum stress at the beginning stages of upstroke. This research is helpful to answer that why insect wings are so perfect through long evolution, thus improving the design of flapping-wing aerial vehicles.
Analysis on Water Abundance of Loose Aquifer and Quality Evaluation of Overburden Strata during Mining under Loose Aquifer
Authors: Lu Hai Feng , Wang Lin
Published: August 2014

The establishment of pillars is one of the most effective methods to keep mining safety under loose aquifer. Water abundance of bottom aquifer of loose strata,strength and structure of overburden strata are the main factors controlling type and height of coal pillar.Taking Xiyi area in Pansan coal mine as an example, hydrogeology characteristics of the bottom aquifer of quaternaty system and engineering geological properties of overburden strata of No.8 seam were analyzed.The characteristics of weathered rock was particularly analyzed.The results indicated that the type of the water abundance and permeability in this aquifer were medium.When the No.8 seam in Xiyi area was at shallow depths mining, water-proof pillar had to be designed.The structure of overburden strata of No.8 seam belonged to the type of upper soft and lower hard,which can restrain the failure of overburden strata.The thickness of weathering zone was thick and distribution was also stable.Weathered rock had good water-resisting property and crack resistance.
An Image Quality Assessment Approach Based on Saliency Map in Space Domain
Authors: Wang Bin
Published: August 2014

This paper proposes a no-reference image assessment approach (IQA) based on saliency map in the space domain of the image. The saliency map of the image is extracted by Itti model at first. Next, the saliency-map weighted normalized image is used to get the histogram of the image, then the histogram is modeled by generalized gaussian distribution and the parameter of the generalized gaussian distribution is estimated by parameter estimating approach. Parameters of the generalized gaussian distribution are used as the feature vector for the training and testing image. The feature vectors of the testing image are fed to support vector regresion machine to evaluate the image quality score. Experimental results show that our approach outperforms the recent method of no-reference IQA.
Coal Mine Land Reclamation Measures — Open-Pit Coal Mine of Baofa Coal Co., LTD
Authors: Liu Yun Chao
Published: August 2014

The coal mining has brought a series of ecological and environmental problems, including the most obvious one —land damage. Coal mine land reclamation can restore and rebuild the mine ecology, improve regional environmental quality, the establishment of social - economic - naturally coordinated development of a mine, ecologically virtuous circle of green industrial ecosystem. Open-pit coal mine of Baofa Coal Co., LTD. For its current land use, based on the "land reclamation technical standards" and other relevant standards and comprehensive study of area natural and socio-economic conditions, land suitability factors, the land reclamation countermeasures of open-pit coal mine are given out.
The Study and Experiment of ERT Imaging System
Authors: Chen Zi Peng , Li Peng , Fang Xi , Li Zhuo Qiu
Published: August 2014

The Electrical Resistance Tomography (ERT) is a new technology developed in recent years. Because of the characteristics as simple structure, low cost and non-invasive, the ERT has already application in geophysics, physical geography, mineral detection et al.in this paper, the ERT is used to detect the damage of the remote carbon fiber felt with wireless sensing technology. In experiment, the wireless technology is used to avoid the noise and the introduction of the long wires, which realized the remote detection; the Improved Newton -- Raphson algorithm is used to achieve the detective imaging, which had good results.
Model Optimization and Testing on Real-Time Video Moving Target Detection
Authors: Zhang Shu Ling , Zhang Zhi Hong
Published: August 2014

Zhang presented a statistical model of real-time video moving target detection based on Bayesian statistical theory. This article discusses the algorithm parameter selection and detection efficiency of the model by using the experimental simulation method. This article generates a reference background based on unsupervised learning methods, and uses a color space that has a better environmental adaptability to represent the background, and uses dynamic threshold method to classify the results of background subtraction and frame difference. By comparing experimental of different methods, it shows that this algorithm has a greater advantage in terms of accuracy and timeliness.
A Novel Method for Solar Tracking
Authors: Qu Wei , Zhou Zhi , Li Guo Li , Li Wen Qiang , Wu Peng Fei
Published: August 2014

A novel solar tracking method based on field programmable gate array (FPGA) is proposed to improve the photoelectric conversion rate of the solar cell unit area. In this method, the sun angle tracking is utilized to track, and tracking solar panels reach the altitude angle azimuth tracking position. Then four voltage signals of photo resistor sensors is used to compare the north-south direction and east-west direction respectively, in order to micro adjust the solar panels to getting same point voltage, enabling to achieve accurate sunlight tracking and positioning. Experimental results show that this method can accurately track the tracking the sun, and it has improving solar absorption efficiency of the solar tracking device.
SVD-TLD Sensing Algorithm for EES-MIMO Radar
Authors: Wang Zhen , Zhu Lan Xiang , Yu Feng , Gu Lei
Published: August 2014

Based on Electromagnetic Environmental Sensory(EES)and Multiple-input Multiple-Out(MIMO) radar sensing algorithm , this paper presents SVD-TLD perception algorithm, which firstly use the cross-spectrum AR model parameter estimation, and secondly considering the cross-correlation matrix of the estimation error function disturbance and lastly taking into account of the two ends of the equation, using the cross-correlation function of the estimated measurement errors to affect the Total Least Squares (TLS) method . Compared with the AR model parameter estimation, the accuracy of SVD algorithm cross-spectral estimation has significantly improved, greatly reducing the amount of computation and is more conducive to real-time online computing.
Research of Ni-Mn-Ga Shape Memory Alloy Based Mechanical Vibration Detection Device
Authors: Cai Yong Zhi
Published: August 2014

The study explores the vibration sensing effect of Ni-Mn-Ga shape memory alloy, based on the experimental results, researched the characteristics of this alloy applied in mechanical vibration signal sensors, and describes the feasibility of this alloy used for vibration measurements.
The Calibration Method of Helmholtz Coils for the Permanent Magnet
Authors: Hou Rui Fen , Zhang Zhi Gao , Dai Lu , Gong Wen Jie , Lin An Li
Published: August 2014

The current method is presented to calibrate the constant of Helmholtz coils. Two measurement methods of magnetic field strength are proposed and compared. In order to improve the accuracy, the influence of geomagnetic field is eliminated by changing direction of the magnetic field of Helmholtz coils. When the magnetic field strength is measured by Guassmeter, the calibration uncertainty is 0.12% (k=2). When the magnetic field strength is measured by Fluxmeter and search coil, the calibration uncertainty is 0.30% (k=2).
Marine Radar Target Detection for USV
Authors: Ji Xing , Zhuang Jia Yuan , Su Yu Min
Published: August 2014

Unmanned surface vehicles (USV) have become an intense research area because of their extensive applications. Marine radar is the most important environmental perception sensor for USV. Aiming at the problems of noise jamming, uneven brightness, target lost in marine radar images, and the high-speed USV to the requirement of real-time and reliability, this paper proposes the radar image target detection algorithms which suitable for embedded marine radar target detection system. The smoothing algorithm can adaptive select filter in noise, border and background areas, improves the efficiency and smoothing effect. Based on the iterative threshold, the tolerance coefficient is selected by the histogram, ensures the robust of segmentation algorithm. The location, area and invariant moments features can be extracted from the radar image which after connected-component labeling. The actual radar image processing results demonstrate the effectiveness of the proposed algorithms.
Design of an Online Grain Moisture Detection System
Authors: Ding Ying Li
Published: August 2014

To test granular grain moisture, an online detection system is studied. This system uses a cylindrical capacitive sensor as the detection device. Through the signal detection and processing circuit, using SCM system to complete the online testing of grain moisture. As we all know, for the AC voltage signal, the influence of capacitors and inductors is coupled. So there are some errors no matter measures capacitance alone or measures inductance alone. But this design takes into account of both factors. The relationship between the ratio of the capacitance and conductance and the moisture content is studied. The results show that a small error and a high reliability are obtained.
Discussion on Solving down Leading of OPGW under Framework with Insulation
Authors: Peng Yong Nian , Lin Yi Wei
Published: August 2014

OPGW shall be lightening-proof and grounded after entering transformer station framework. Due to problems existing in grounding, optical cable is discharged and breaks down. For such a purpose, the Author investigates several down leading and grounding methods on OPGW framework, by comparing and analyzing, and proposes the “framework down leading insulation not grounded”. This method adopts framework insulation down leading not grounded and grounded reinforced on terminal tower to solve the issue of framework grounding and result in sound effects.
A Earth Fault Section Identification Method Based on ANN
Authors: Xie Jia Wei , Bi Gui Hong , Chen Shi Long , Zhang Jie
Published: August 2014

The method to discriminate the fault within or beyond the protective zone according to the signals with high frequency detected in protection has problem with low reliability when the resistance of earth fault is high. The transient voltage with low frequency detected in protection can reflect the size of fault intensity approximately, and the transient voltage with high frequency detected in protection in internal fault is bigger than that in external fault when the size of fault intensity is same. The high frequency transient voltage and low frequency transient voltage detected in protection are chosen as inputs and fault section as outputs for training and testing the neural network for fault identification in the UHVDC transmission line, fault section can be identified when input fault characteristic data to the trained model. A variety of transmission line earth fault situation are simulated by PSCAD, and this earth fault section identification method based ANN shows satisfactory performance, even the fault resistance is high.