bluuebunny/crossref_metadata_2025 huggingface dataset:
Hydrogen Storage Kinetics of Mg20Ni10-xMx (M=Cu, Co; x=0-4) Alloys Prepared by Melt Spinning
Authors: Zhang Yang Huan , Liu Xiao Gang , Chen Le Le , Ren Hui Ping , Zhang Guo Fang , Zhao Dong Liang
Published: January 2012

In order to improve the gaseous hydrogen storage kinetics of the Mg2Ni-type alloys, Ni in the alloy was partially substituted by M (M=Cu, Co). Melt-spinning technology was used for the preparation of the Mg20Ni10-xMx (M=Cu, Co; x=0, 1, 2, 3, 4) hydrogen storage alloys. The structures of the as-cast and spun alloys are characterized by XRD, SEM and TEM. The gaseous hydrogen absorption and desorption kinetics of the alloys were measured by an automatically controlled Sieverts apparatus. The results show that the as-spun (M=Cu) alloys hold a typical nanocrystalline structure, whereas the as-spun (M=Co) alloys display a nanocrystalline and amorphous structure, confirming that the substitution of Co for Ni facilitates the glass formation in the Mg2Ni-type alloy. The substitution of M (M=Cu, Co) for Ni engenders an insignificant effect on the hydrogen absorption kinetics of the alloys, but it markedly ameliorates the hydrogen desorption kinetics of the alloys. As the M (M=Cu, Co) content increase from 0 to 4, the hydrogen desorption ratio ( ) is enhanced from 27.7% to 58.9% for the as-spun (30 m/s) alloy (M=Cu), and from 27.7% to 70.2% for the as-spun (30 m/s) alloy (M=Co).
Photocatalytic Degradation of Methylene Blue Using Eu3+ and Sm3+ Co-Doped TiO2
Authors: Jiang Cheng Zhi , Lu Xu Dong
Published: January 2012

Abstract: The 0.05%Eu3+ and 0.1%Sm3+ co-doped TiO2 composite nanoparticles have been prepared by sol-gel method and characterized by the techniques such as XRD and SEM/EDAX. The photocatalytic degradation of Methylene blue in aqueous solution was used as a probe reaction to evaluate their photocatalytic activity. The effects of process parameters like, solution pH and H2O2 concentration on the extent of photodegradation have been investigated.
Cutting Force Prediction Model of 34CrNiMo6 High Strength Steel Using Statistical Method
Authors: Bai Long , Wang Tao , Wang Xi Bin , Chen Jian Jun
Published: January 2012

The present paper demonstrates a study of the impact of cutting condition on turning high strength steel 34CrNiMo6. Based on Taguchi method, a plan of experiments was performed with ceramic cutting insert. The first and second cutting force equations are developed through the response surface methodology (RSM) to investigate the effect of input cutting parameters (cutting speed, feed rate and depth) on cutting force. In term of input parameters, the cutting force contours are showed and the analysis of the predicted models is performed with aid of the statistical software package. In addition, the separate influence of individual cutting parameter and the interaction between these factors are also discussed in this study. In general, the results obtained from the mathematical model agree well with the experimental data.
The Design of Promoting and Thrust Gear on Refrigerator Body
Authors: Chen Qiong
Published: January 2012

Promoting and thrust gear on refrigerator body in automatic production line has been designed. The existed equipment has poor adaptability and low efficiency. The key improvement on promoting and thrust gear is to use hydraulic system as driving force. Movement of independent model car on the production line track has been circulated. Reasonable movement effect is achieved after analysis on hydraulic circuit simulation by FulidSIM-H. At last, the promoting and thrust gear is put to use in production line and got good performance.
Isolation and Characterization of a Sulfanilic Acid Degrading Bacterial Strain
Authors: Yang Yan Qing , Wu Chu , Wang Lu Yun , Yang Ling
Published: January 2012

Sulfanilic acid is a representative intermediate of some sulfonated azo dyes. A bacterial strain isolated from the river in Wenzhou, could utilize sulfanilic acid as the solo carbon source and energy source. Based on its morphological, physiological and biochemical characteristics as well as 16SrRNA sequences the bacterial strain was identified as Ochrobactrum anthrop. Effective biodegradation of sulfanilic acid occurred at pH ranging from 6 to 8. The optimum growth temperature and pH for the bacterial strain to utilize sulfanilic acid are 30°C and 7.0 respectively. Its most favorable sulfanilic acid concentration is 300mg/L.
An Effective Approach to Improve the Oxidation Resistance of Ti-6Al-4V Alloy by Combination of Phosphorization and Silica Coating
Authors: Gao Chun Xiang
Published: January 2012

A very effective approach to improve the oxidation resistance of Ti-6Al-4V alloy was proposed. The Ti-6Al-4V alloy was firstly phosphated and then coated by silica using sol-gel dip-coating technique. A duplex layer of TiP2O7 and amorphous silica was synthesized at the alloy surface. The isothermal and cyclic oxidation behavior of the treated alloy with silica coating and the corresponding bare alloy was investigated at 600 oC in static air to investigate the synergetic effect of phosphorization and amorphous SiO2 coating on the oxidation resistance of the alloy. The isothermal and cyclic oxidation resistances of the alloy were greatly improved.
Research and Application on Parameterized Modeling Technology of Shaft Part Based on Feature
Authors: Zhang Lan Ting
Published: January 2012

At present, parameterized design and feature modeling are the two main developing direction of CAD. Integrating feature modeling with parameterized technology is the effective method and measure to 3D design and modeling, which product feature is modeled by parameter. According to it’s characteristic, feature of shaft part is classified and described concretely, and feature information model is established in this paper. Feature modeling method and parameterized feature modeling technology of shaft part are studied and parameterized feature modeling module based on UG NX for shaft part is developed.
The Research on Modular Designing Method of Marine Diesel Engine
Authors: Zhang Hui Xia , Zhang Xue Lian , Tang Wen Xian
Published: January 2012

Modular design has gradually become an important method to modern design, and the modular method is the key. This paper combines extension theory with clustering analysis methods through establishing matter elements model of marine diesel engine, which is the extension of the traditional extenics and clustering analysis methods, and analysis and evaluate the results. It is the foundation of the modern design of the marine diesel engine.
Effect of LSPWES Process on Semisolid A356 Alloy Slurry Feedstock
Authors: Tang Guo Xing , Mao Wei Min , Liu Yong Feng
Published: January 2012

It is demonstrated that the fine spheroidal and equiaxed non-dendritic microstructures required for semisolid casting can be formed by low superheat pouring and weak traveling-wave electromagnetic stirring (LSPWES). The effects of pouring temperature and then soaking treatment on the microstructure of A356 slurry were investigated. The results show that if A356 alloy is poured at 630 or 650°C and meanwhile stirred by an electromagnetic field at low power for a short time, the pouring process can be easily controlled and most solidified primary α-Al grains become spherical and only a few of them are rosette-like. Weak traveling-wave electromagnetic stirring makes the temperature field more homogeneous and makes the primary α-Al grains disperse in a large region, which leads to the spherical microstructure of primary α-Al grains. When the A356 alloy is soaked or reheated at the semisolid state, the primary α-Al grains ripen further and they become more spherical, which is favorable to the semisolid forming of A356 alloy.
Friction and Wear Properties of Polyamide 66 Composites Filled with Carbon Fiber under Dry Sliding and Oil Lubricated Condition
Authors: Cai Zhi Yong , Wang Wen Xia
Published: January 2012

The tribological performance of pure polyamide 66 (PA66) and Carbon fibre (CF) reinforced PA66 composite were studied at dry sliding and oil lubricated conditions. The results show that the coefficient of friction and specific wear rates for pure PA66 and CF/PA66 composite slightly in increase with the increase in applied pressure values. On the other hand the coefficient of friction is in decrease while the specific wear is in increase with the increase in sliding speed values.
Chess Upgrade：A Complex Simulation Mathematics Model of Ancient City Attack and Defend War
Authors: Wen Yi Feng
Published: January 2012

The subject of this paper is introduction of invent and upgrade chess as a Complex mathematics model simulating ancient city attack and defend war. Upgrade chess is development to traditional chess and giving up traditional chess game's imperfection. The design ideas of upgrade chess based on Chinese traditional TaiJi philosophy concerning Yin and Yang, and combine western dialectics and structuralism philosophy: the various elements of the chess including pieces and chessboard form organic connection system for both sides checkking each other and mutual competion. Upgrade chess is "mental gymnastics" and "chess football", as well as a extremely challenging mathematical problems. Upgrade chess as software can provide intelligent control for various cultural industries, e.g., can be applied to sports competition, online games, cultural entertainment, sports related handicrafts, media coverage industry and so on. Thus it has potential to form large scale economic benefits.
Topology Optimization of a Parallel Hybrid Electric Vehicle Body in White
Authors: Yang Shu , Qi Chang , Guo Dong Ming , Wang Ying Li , Wei Zhi Yong
Published: January 2012

Topology optimization design of a parallel hybrid electric vehicle (HEV) body in white (BIW) by applying Solid Isotropic Microstructure with Penalization (SIMP) method is presented. The BIW optimization of HEV takes into account not only the static loads, but also the loads of HEV in turning and braking conditions. Torsion playing a leading role in vehicle turning process and bending playing a leading role in vehicle braking process are converted to related vertical force imposed on the optimal model. The optimal result shows clear skeleton body in white of parallel HEV when volumetric constraint is 25%. Beam appears in the top of optimal automotive body in white when volumetric constraint is 40%. There is no significant change except increased thickness for the basis body in white of parallel HEV when volumetric constraints continue to enlarge.
A Study on the Battery Parameter Testing Equipment
Authors: Xiao Feng , Han Liang , Chu Xin Pan , Xue Jun Feng , Chen Qi Biao , Lei Min , Zhang Lei Xiang
Published: January 2012

Li-ion power battery which has a broad prospect of application in many industry fields is a new type of high power battery. The formation is a key process in battery manufacture. After formation, the active materials of anode and cathode in the battery can be activated. Consequently, the charge-discharge performance, self-discharge performance, reserve performance and some other comprehensive performances can be improved. Only after formation can batteries achieve the best performance. With the change of formation process, the formation and holding for a single battery has been changed to for a group. Therefor, a new type of battery parameter testing equipment needs to be designed, which can test a group of batteries automatically. This paper will introduce the design of this equipment thoroughly.
Characteristics of the InGaP/InGaAs/Ge Triple-Junction Solar Cells with Concentration Photovoltaic System
Authors: Wang Zi Long , Zhang Hua , Zhang Hai Tao , Li Ye
Published: January 2012

The research on automatic tracking solar concentrator photovoltaic system research has become one of issues of solar PV technology. Aiming at the problem of cell performance degradation which caused by the non-uniform illumination in the concentrating photovoltaic system. A dish-style concentrating photovoltaic system with second stage concentrator was designed and built in this article. The author measured the performance of three junction GaInP/GaInAs/Ge solar cell. According to experiment result, the Pmm of solar cell was increased from 1.54 W/cm2 to 1.88 W/cm2. The η of solar cell was increased from 32% to 34.1% separately that compared with the concentrating photovoltaic system which without the second stage concentrator at the same concentration ratio(150X)
A Review on Fractals and Fracture, Part I: Calculating Fractal Dimensions by CAD Model
Authors: Shariff Asma A. , Hafezi M. Hadi
Published: January 2012

The objective of this paper is to consider the use of fractal geometry as a tool for the study of non-smooth and discontinuous objects for which Euclidean coordinate is not able to fully describe their shapes. We categorized the methods for computing fractal dimension with a discussion into that. We guide readers up to the point they can dig into the literature, but with more advanced methods that researchers are developing. Considerations show that is necessary to understand the numerous theoretical and experimental results concerning searching of the conformality before evaluating the fractal dimension to our own objects. We suggested examining a cloud of points of growth of fracture surface at laboratory using CATIA - Digitized Shape Editor software in order to reconstruct the surface (CAD model). Then, the author carried out measurement/calculation of more accurate fractal dimension which are introduced by [1] in the other paper as Part II.
Level Mobile Shot Blasting Machine Shot Blasting Wheel in the Dynamic Simulation Based on ADAMS
Authors: Zhang Dan , Liu Yuan Lin , Li Hong Tao
Published: January 2012

The level of mobile shot blasting machine analysis, a mechanical model of the projectile with the blade and shot rounds of dynamic simulation model, the model by imposing constraints and external forces, analysis of air resistance, friction, blade length and projectile diameter of throw playing speed. Played by the speed of analysis can throw further analysis of various parameters on the effect of throwing fight.
Microwave Dielectric Properties of Low Temperature Fired CaO-Li2O-Sm2O3-TiO2 Ceramics with LBS Glass Addition
Authors: Gu Yong Jun , Huang Jin Liang , Li Li Hua , Li Qian , Hu Wei , Wang Xiao
Published: January 2012

The sintering behavior and microwave dielectric properties of the 16CaO-9Li2O-12Sm2O3-63TiO2 (abbreviated CLST) ceramics doped by small amount of LBS (Li2O-B2O3-SiO2) glass were investigated in this paper. The adding of LBS glass improved the densification of the CLST ceramics and the sintering temperature of the CLST ceramics had been efficiently lowered to 1000°C. Especially, the 10wt.% LBS doped CLST sintered at 1000°C for 3h has optimum microwave dielectric properties of Kr=69, Q×f=2846GHz, and TCF=9.7ppm/°C, indicating that it could be a suitable candidate for LTCC applications.
An Intrusion Detection Model Based on Non-Negative Matrix Factorization
Authors: Chen Shan Xiong , Wu Sheng , Cao Yi , Tang Dong Sheng
Published: January 2012

In this paper ,we discus a wide class of loss functions for non-negative matrix factorization (NMF) and derive flexible and improved NMF algorithms based alpha-divergences for error measures, which generalize or combine several different criteria in order to extract intrusion signal.
Design of Tire Pressure Sensor Based on High Integrated Wireless Sensor
Authors: Wang Chun Yan
Published: January 2012

This paper focus on how to improve wireless transmission efficiency, reduce the quality and volume of TPMS to reduce impact of tire balance in a moving vehicle. A tire pressure monitoring transmitter based on high integrated wireless sensor MPXY8300 is described in this paper and the hardware structure is being put forward. Introduced the way to reduce energy consumption, and wireless circuit design. This system can monitor the inner practical pressure and temperature of each tire and the security accidents can be avoided effectively.
System Identification Based on Recursive Least Square Method for the Magnetic Suspension Active Vibration Isolation System
Authors: Yang Bei Bei , Hu Ye Fa , Ding Guo Ping
Published: January 2012

In this paper, we use recursive least squares method for magnetic single layer vibration isolation system identification to get the system transfer function matrix. By considering the fitting degree, pole-zero, the step response to adjust the order of model and noise structure for optimizing the model Identification. Applying the system transfer function matrix to the magnetic active vibration control system to improve the isolation effect. The results showed that: significantly improved isolation effect, verify the validity of this identification model for magnetic single isolation system.
The Impact Analysis of Digital Controller Hardware Parameters of AMB on Control Precision
Authors: Yang Yu Min , Wang Xi Ping , Guo Li , Fan Man
Published: January 2012

Digital control circuit for the hardware components, the impact of parameters on the control precision is analyzed. The digital control model is derived according to the requirements control of magnetic bearing system in this paper .Control accuracy and the prediction of control accuracy can be achieved by he theoretical estimates when numerical control system is given .For the future, it provides a simple and efficient method for estimating control accuracy of numerical controller.
Analysis on Axial Magnetic Force of Permanent Axial Bearing by Axial Magnetized
Authors: Fan Man , Wang Xi Ping , Li Wei , Guo Li , Yang Yu Min
Published: January 2012

Permanent magnet axial bearing axial stiffness analysis is critical in the design process of permanent magnetic bearing. This article establishes the axial magnetic model through the equivalent magnetic charge method, but the equivalent magnetic charge method solving the axial force need work out four complicated quadruple integrals. The calculation cycle the traditional method is too long, and even cannot get analytical solution. On the contrary, the method of through Forcal language programming to approximate computation bearing axial force makes the solving process simplification. The stiffness of the permanent magnet bearing with equivalent magnetic charge method is verified by comparing the simulating result obtained by using the finite element method. The conclusion is that the equivalent magnetic charge method can be used to calculate the axial stiffness of permanent magnet bearings and provide the basis of the axial permanent bearings design.
Backstepping-Based Nonlinear Robust Controller for AMB Spindle
Authors: Bian Bin , Liu Shu Qin , Li De Guang , Wang Zhao Kui
Published: January 2012

In this paper, backstepping method is used to handle the nonlinear factors for magnetic bearing spindle systems, resulting in the design of a nonlinear robust controller to make the system in equilibrium with the global uniform asymptotic stability. Meanwhile, considering the uncertainty in the system model, the impact of uncertainty is introduced in the design process, so that the system has certain robustness. Simulation results show that this method can have a good control effect in the nonlinear magnetic bearing spindle applications..
Design of Main Circuit and Analysis of Active Power Filter
Authors: Jin Yun Ce , Zhang Li Chen
Published: January 2012

With the use of power electronic equipments and increasing nonlinear loads, the problems of quality of power supply becomes serious. Different kinds of loads need different active power filter (APF). Performance of APF depends on the design of main circuit. In this paper, the principle of APF and many kinds of structure of main circuit are presented. Multilevel, injection circuit and multiplicity are analyzed. A combined controller, the combination of PI controller and fuzzy controller, is applied to voltage control of DC side.
Distance Protection Application Based on Wavelet Transform and Traveling Wave Ranging
Authors: Kang Peng Peng , Zhu Xi Fang
Published: January 2012

This paper describes the wavelet transform theory, and traveling wave theory. When the power system transmission line fault occurs, the fault signal generated by sampling and analysis, and use a method of one-end fault distance measurement in transmission line. Finally the article gives the ranging devices’ hardware and software design.
Magnetic Force Characteristics and Structure of a Novel Radial Hybrid Magnetic Bearing
Authors: Chen Jun Hui , Yang Feng Yu , Nie Chao Rui , Yang Jun , Wan Peng Yan
Published: January 2012

There are some problems in the permanent magnetic circuit of the current permanent magnet biased magnetic bearings, such as small magnetic force, low magnetic flux density and lack of self-stabilization. To solve this problem, a new hybrid radial magnetic bearing structure has been proposed. The nonlinear model and linearization equation of the new hybrid radial magnetic bearing capacity has been established by current molecular method and virtual displacement theorem. It is found that the permanent magnetic bearing can achieve self-stabilization in the radial degrees of freedom and can reduce the total displacement of negative stiffness. The results show that the air gap flux density is greatly improved by the new hybrid magnetic bearing with Halbach array structure. Current stiffness and displacement rigidity is closely related to initial current and initial gap of the equilibrium position. Near the equilibrium position, current stiffness and displacement rigidity are linear relationship. With the increase of air gap, it remains a good linearity. While with the decrease of air gap, it presents nonlinear characteristics..
Rotor Eddy Current Losses Analysis on BPMSM Using FEM
Authors: Zhang Tao , Zhu Huang Qiu
Published: January 2012

It is important to clarify the rotor eddy current losses in bearingless permanent magnet synchronous (BPMSM) for temperature rising to induce irreversible demagnetization. In this paper, the torque and radial suspension force producing mechanisms of BPMSM are introduced. The relative motion relationships among radial suspension force, rotor magnetic field and suspension winding magnetic field are analyzed. The necessary conditions of producing stable controllable radial suspension force in single direction are concluded. The rotor eddy current losses in BPMSM with PB=PM+1 and PB=PM-1 are calculated and compared using 2D time-steeping finite element method. The research results have shown that the BPMSM with PB=PM+1 is the most suitable for high speed operation with the minimum eddy current losses in rotor.
Sensorless Control of IPMSM Using Extended Flux Estimation Method
Authors: Zhang Tao , Ni Wei , Zhang Hui Ping , Wu Sha Sha
Published: January 2012

The mathematic models of an interior permanent magnet synchronous motor (IPMSM) are deduced in this paper. A novel sensorless control strategy for IPMSM is proposed. An extended ﬂux is systematically derived by using the proposed extended ﬂux estimating method. The shaft position and speed of the motor are obtained. The simulation control system is built based on Matlab and a TMS320LF2407 digital signal processor is used to execute the rotor position estimation and rotor speed estimation. Several experimental and simulation results are provided to validate the control strategy.
Successive Translucent and Opaque Shear Bands Accompanied by a Pronounced Periodic Waves Observed in a Polypropylene (PP) Processed by Single ECAE Pass
Authors: Boulahia R. , Boukharouba Taoufik , Zaïri Fahmi , Naït-Abdelaziz M. , Gloaguen J.M. , Seguela R. , Lefebvre J.M.
Published: January 2012

The equal channel angular extrusion (ECAE) is an ingenious severe plastic deformation process used to modify texture and microstructure without reducing sample cross-section. The ECAE of polypropylene (PP) was conducted under various extrusion velocities and back-pressure levels using a 90° die. The application of single ECAE pass to PP was meticulously investigated at room temperature. The ECAE-induced deformation behaviour was examined in relation to the load versus ram displacement curves. Depending on extrusion conditions, PP displayed various types of plastic flow. For ram velocities beyond 4.5 mm/min, severe shear bands consisting of successive translucent and opaque bands were observed, accompanied on the top surface by more or less pronounced periodic waves. Although the application of a back-pressure significantly reduced the wave and shear-banding phenomena, slightly inhomogeneous shear deformation was still observed. Shear bands were only suppressed by decreasing extrusion velocity. The strain-induced crystalline microstructure was investigated by X-ray scattering. Shear-banded samples exhibited a strong texturing of the (hk0) planes along the shear direction in the translucent bands whereas perfect crystalline isotropy appeared in the opaque bands. Application of backpressure and/or reducing ram velocity resulted in uniform texturing along the extruded sample. Yet, texturing changed from single shear to twin-like shear orientation about the shear direction. Mechanical properties changes of the extruded specimens due to back-pressure and extrusion velocity effects were analyzed via uniaxial tensile tests. The tensile samples displayed multiple strain localizations in shear-banded materials whereas quite homogeneous deformation appeared for non-banded ones. These effects were connected with the crystalline texturing. The results also revealed significant increase in the strain hardening after ECAE. Full-field strain was measured under tensile loading using an optical strain measuring technique based upon Digital image correlation technique, suitable for large deformation, which confirms these effects.
Experimental and Mechanical Characterizations of a Lead Free Solder Alloy for Electronic Devices
Authors: Msolli S. , Dalverny Olivier , Alexis Joël , Karama Moussa
Published: January 2012

Electronic power modules devices are paramount components in the aeronautical, automotive and military applications. The solder layers are the most critical parts of the module and are usually subjected in their whole life to complex loading conditions. To improve the design task, realistic thermoelastoviscoplastic and lifetime prediction models which can describe efficiently the deformation-damage of the electrical device must be chosen carefully. Some of the most common behavior models are based on the separation between creep and plasticity deformations such as power law, Garofalo, Darveaux… So, to take into account the creep-plasticity interaction, the thermal cycling as well as the hardening-softening effects, unified viscoplastic models are increasingly being used to describe more efficiently the physical state of the material. We propose in this framework a survey of some unified viscoplastic models used in the electronic applications for the viscoplastic modeling of the solder as well as creep-fatigue life prediction rules. The models are used for the characterization of a SnAgCu solder and are briefly compared within tensile, creep data and stabilized responses.
Pareto-Optimal Solutions for a Truss Problem
Authors: El Alem W. , El Hami A. , Ellaia Rachid
Published: January 2012

Most optimization problems, particularly those in engineering design, require the simultaneous optimization of more than one objective function. In this context, the solutions of these problems are based on the Pareto frontier construction. Substantial efforts have been made in recent years to develop methods for the construction of Pareto frontiers that guarantee uniform distribution and exclude the non-Pareto and local Pareto points. The Normal Boundary Intersection (NBI) is a recent contribution that generates a well-distributed Pareto frontier efficiently. Nevertheless, this method should be combined with a global optimization method to ensure the convergence to the global Pareto frontier. This paper proposes the NBI method using Adaptive Simulated Annealing (ASA) algorithm, namely NBI-ASA as a global nonlinear multi-objective optimization method. A well known benchmark multi-objective problem has been chosen from the literature to demonstrate the validity of the proposed method, applicability of the method for structural problems has been tested through a truss problem and promising results were obtained. The results indicate that the proposed method is a powerful search and multi-objective optimization technique that may yield better solutions to engineering problems than those obtained using current algorithms.
Research on Repeat Compensation Algorithm in the Servo System of CNC Machine Tools
Authors: Wang Hong Ying , Peng Er Bao
Published: January 2012

The ideal control effect cannot be reached using the traditional PID control in AC servo system. A PID control programme with repeat compensation has been proposed. A new control structure based on repeating compensation has been improved and embedded in the traditional PID control. Tracking accuracy and response speed of AC servo system have been improved by the new control programme. Ant cyclical interference and control performance of system were higher.
Hydrogen Bell-Type Furnace Control System Based on Multi-Layer System Structure
Authors: Li Shun Xin , Mo Yu Fan
Published: January 2012

Hydrogen bell-type furnace control system plays a vital role in cold-roll production process. Optimizing this system is a good way to improve the production quality. In this reason, this paper combining the ideas of multi-tier architecture in software engineering, taking the actual situation of hydrogen bell-type furnace control system into account, making full use of the existing system, designed the control system based on multi-C/S structure. This paper analyzes the function of the system, given the system hierarchy, system implementation and describes some of the key technologies
AMLU Truck Crane Torque Instrument Working Set and Analysis
Authors: Yang Jia , Qiu Li Jun
Published: January 2012

The automobile crane was in different working conditions and the arm length and elevation conditions corresponding to different weight. Crane 's rated capacity was nonlinear distribution. Torque limiter by detecting arm extended arm length and arm lifting the initial angle. The torque limiter got by calculating crane lifting weight and to realize the crane safety protection and control. The design of torque limiter should take into account the crane working condition, operation requirements, technical indicators.
Preparation and Analysis of Magnetic Nanoparticles Used as Highly Active Catalysts over a Wide pH Range
Authors: Wang Wei , Li Tie Long , Liu Ying
Published: January 2012

In this work, Fe3O4 magnetic nanoparticles with high peroxidase-like catalytic activity and spontaneous pH adjustment ability were successfully prepared by co-precipitation method followed by appropriate thermal treatment. Key synthesis factors were identified and adjusted to tailor the crystallinity, chemical composition and then catalytic property. The crystal structure and Fe (II) content of the catalyst strongly affected its degradation efficiency. Phenol was completely removed by the optimal magnetic nanoparticles under a wide range of pH from 3.0 to 8.0. Additionally, this catalyst exhibited low iron leaching, good reusability and excellent potential to eliminate various organic pollutants from waste water. The reaction mechanism was discussed in terms of the formation of HO• and O2•−/HO2• radicals.
Application and Research of XML Technology in IETM
Authors: Sheng Wen Ping , Wang Rui Qi , Lin Yu , Huang Jing Li , Yang Chun Ying , Li Ting Jun
Published: January 2012

XML (eXtensive Markup Language) technology is the key technology in the development of Interactive Electronic Technical Manual (IETM) system. Focus on the analysis of the application of XML technology on current standardization and database of XML technology on the expert knowledge system.
The Optimization of Cutting Parameters of Cast Iron Based on the Genetic Algorithm
Authors: Yang Hao Jin , Guo Xu Hong , Wan Dong Dong , Chen Ting Ting
Published: January 2012

Data timeliness of cutting process data is so intenser under the new situation than ever .It’s especially necessary to propose the physical model on which the optimization of cutting parameters is based. In this paper the mathematical model is established by the analysis of the data measured from the cast iron experiments, then use MATLAB genetic algorithm analysis to calculate the optimum combination of cutting parameters. The results show that the optimum combination of cutting parameters could improve the production efficiency in practice.
Database System Construction of Unearthed Textiles
Authors: Cao Qiu Ling , Wang Lin , Li Gao Zhong
Published: January 2012

The unearthed textile is an important material for human existence. This paper describes the design processing of database system of unearthed textiles. The database is built under the Microsoft Office Access, which mainly contains the age of unearthed textiles, category, excavated site, collection information, character description of textiles, picture, and literature sources. The function of this database includes data input, data maintenance, data query, data mining and data application.
A Method of Generating Three-Dimensional Terrain Based on Digital Geographical Topographic Map
Authors: Zhou Jia Jun , Qi Min , Li Da Jian , Cui He Lin , Zhang Xiao Xi , Han Yi Hong , Wang Yi
Published: January 2012

At present there are diverse algorithms in generating 3d terrain,to further improve the efficiency of the algorithms and fidelity of the 3d terrain,a new method generating 3d terrain by digital geographical topographic map was put forward.First extract the contour lines from the map and thin the contour lines by a improved thinning algorithm based on mathematical morphology[1].In the process of interpolation,the digital elevation map of terrain can be got by interpolation in vertical and horizontal directions,and the method of intra-interpolation and extra-interpolation according to the distribution of contour lines was also used.The terrain got by this method can reflect the details and the tendency of the terrain.The digital geographical topographic map on the network can reflect the change of the terrain timely because of its high updating speed.This method has great practical value
A Survey on the Status Quo of the Wood Carving Art of the Confucius’ Temples in Hunan Province
Authors: Luo Ming , Liu Su
Published: January 2012

Through researching more than 20 existing Confucius’s Temples in Hunan Province, this article analyzes the status quo and cultural connotation of the wood carving art of the Confucius’ Temples in Hunan Province. This survey clearly reveals the artistic features of the wood carving art of Hunan Confucius’ Temples: emphasizing romantic charms, employing concise techniques, modeling through lines and symbolizing shapes adjusting to materials. Also three specific measures are put forward in this paper to protect these artistic treasures.
Shipbuilding-Oriented Welding Technology Based on NX
Authors: Zhou Lin Zhen , Wang Bin , Ji Cong Dong , Tao Jie
Published: January 2012

The requirement of the welding technology is very rigid in modern shipbuilding industry. This paper firstly analyzed the different forms of welding joints and grooves in detail, then described the function of NX-based welding technology. The difference of the features of Fillet Weld and that of Welding Joint were compared in the paper. Finally, a case was employed to explain the process of feature creation.
CFD Analysis on Fire Feature of Subway Station with Different Location of Ticket Machine
Authors: Han Xin , Li Chong Yu , Cong Bei Hua
Published: January 2012

Rational spatial distribution plays a significant role on fire safety of subway station. The location of ticket machine is one of the main factors affecting fire feature of such stations. Taking a certain subway station as a physical model, this paper carries out simulation analysis on several fire scenarios with the help of software FDS. By comparing the fire temperature, smoke density as well as visibility under different kinds of space between ticket machine and the escape exit, the appropriate space between ticket machine and escape exit is obtained which could be a reference for practical projects
The Traits of Orthogonal Quarternary Small Function Wraps according to Quantity Matrix Dilation
Authors: Wei Yan Rong
Published: January 2012

The advantages of wavelet packets and their promising featu-res in various application have attracted a lot of interest and effort in recent years. In this paper, we propose the notion of quarternary small function wraps according to a quantity matrix dilation, which are gener-alization of univariate wavelet wraps. A nice procedure for designing the vector-valued quarternary small-wave wraps is provided. Their cha-racteristics are researched by virtue of time-frequency analysis method, wavelet transform and curvelet coefficients. The orthogonality formulas concerning these small-wave wraps are established. Furthermore, it is shown how to draw new orthogonal bases of space from the small-wave wraps. A method for designing a class of affine quarternary dual frames in four-dimensional space is presented. The results we obtain gains much improvement
Performance Study of New Energy-Saving Gas Stove and its Optimization
Authors: Zhang Jin Hong , Dai Xue Wei , Yang Miao , Xie Ning , Zhang Ru Xin , Liu Ying , Wu Jiang
Published: January 2012

A novel gas stove is developed by upgrading the general home use gas stove, it can absorb heat loss when heating food, through analysis of its performance and optimized, the result shows that it can not only solve the problem of heat leakage, but also reduce the unnecessary temperature rise of kitchen. This will improve the gas efficiency when boil water to cook, meanwhile it can save energy indirectly and achieve good economic returns. It can improve the utilization of its natural gas, on the other hand, it can reduce heat loss and environment pollution, environmental and economical benefits.
A Novel Kind of Turbidity Sensor and its Measurement Method
Authors: Liu Xing Qiao , Zhang Peng
Published: January 2012

In this paper, the scattering measuring principle of turbidity is introduced firstly. The new type of turbidity sensor probe designed in this paper overcomes the deficiencies of existing technologies, which has higher sensitivity, strong anti-interference and can detect the turbidity accurately and continuously. The system designed with the core of MCU C8051F020 is presented. Then the design of turbidity sensor probe, data acquisition, processing and non-linear compensation are introduced in detail. Besides, in order to eliminate the impact of temperature on the turbidity measurement and improve the measurement accuracy, temperature measurement circuit has been designed. Test results have shown that the designed on-line turbidity-meter has some advantages: low price, high precision, easy operation etc. It can be widely applied in the fields of waterworks, industrial production, aquaculture, environmental protection and so on
Experimental Study of Mercury Releasing Characteristics of Coal Fly Ash under Mild Thermal Condition
Authors: Cai Yu Ran , Xu Wei Feng , Wu Jiang , Zhu Kan , Shi Zhou , Chen Jie He , Zhang Xiao Ying
Published: January 2012

Under mild thermal condition, mercury releasing characteristics and its morphological features transformation of fly ash sample, which is obtained from the exit of air pre-heater of one power plant in eastern China, has been studied in the paper. The experiment shows that under mild thermal condition, the temperature range of fly ash mercury releasing is about 200 °C ~ 800 °C. It reaches the first peak at about 300 °C and it reaches the second peak at about 600°C. Moreover, most sample elemental mercury is Hg0. The fly ash sample in which mercury emissions and unburned carbon content have no obvious relationship.
An Adaptive Segmentation Algorithm Based on Threshold Surface
Authors: Ouyang Ling , Wang Dong Yun
Published: January 2012

In an online defects inspection system for cord fabric based on machine vision, Image segmentation for cord fabric defects has been the heat and difficult problem. An adaptive segmentation algorithm using threshold surface is presented in this paper. This method inspects defects through detecting the change of image gray levels caused by the difference in optic character between glass and defects. The experiment results indicate that the proposed method has low computation cost, fast speed and good segmentation performance. It is in accord with the requirements of online inspection system such as reliability, real-time, and veracity
The Kinetic Analysis of Biomass Burning Based on Two-Component Reaction Model
Authors: Lu Hong Bo , Wang Ze Hui , Ma Yu Xin
Published: January 2012

Combustion of sawdust was studied using Pyris-1TGA thermogravimetric apparatus in the heating rates of 20, 40, 60K/min. The combustion process of sawdust includes three steps: losing water, precipitation and combustion of volatile, and carburization. A bicomponent parallel reaction model is created and used to simulate the combustion process of sawdust under the heating rate of 40K/min. Comparison of simulation and experimental results shows that the fitting curves are in good agreement with the experimental results
Modeling and Simulation of a Grid with a Doubly Fed Induction Generator
Authors: Zhang Hui Shen , Zhang Ge Xiang , Wang De Lin
Published: January 2012

This paper establishes a simulation model for a doubly fed induction generator (DFIG) connected with a power grid by using the vector control scheme. The model consists of a wind turbine, a doubly fed generator, power converters and a vector control strategy. The simulation model is built by using PSCAD/EMTDC. We also investigate the operating characteristics of a grid with the DFIG by considering respective wind speed fluctuation and short-circuit fault in the grid. Experiment results verify the correctness of the simulation model and the relative stability in the operating process of the simulated grid. This work provides a useful simulation platform for further studying the transient stability of the DFIG connected with power grid and more effective control strategies
Hybrid Evolution Strategies Algorithm Based on Dynamic Demes
Authors: Zhang Ming , Sui Jiang Hua
Published: January 2012

A hybrid evolution strategies algorithm based on dynamic demes is proposed in this paper. Evolutionary strategy algorithm is likely premature, and even simulated annealing with the character of local search is impossible to escape this range, when change the population based on the maximum entropy principle so that the individual out of this range, which can quickly converge to the global optimum. The numerical computation results indicate that the algorithm can gain higher global convergence rate and higher speed
Study on Product Design Management based on Product Resources
Authors: Jin Hai Ming , Peng Wen Li
Published: January 2012

Under the background of the combination of design and management, the meaning and the role of design management are summarized. With the extensive application of information technology, a product design management system model based on information technology is proposed. The basic frame and the basic ideas of the system model are analyzed. The main technologies used by the new design management system are discussed. In a word, the new product design management system will be strategic resources and an inevitable choice in the process of developing new products
The Analysis of the Influence of Highway Construction and Operation on Industrial Structure Adjustment in Heilongjiang Province - Co-Integration Test and Causality Test Based on Data from 1995 to 2009
Authors: Jin Ying
Published: January 2012

Based on data for the year in Heilongjiang Province, 1995-2009，Using co-integration and Granger causality test method to test causality between Heilongjiang Provincial Expressway Construction and industrial structure ,found that there exists co-integration relationship between the Heilongjiang Provincial Expressway Construction and operation and three industries. Finally, highway construction, relevant policy recommendations are given to adjust the industrial structure of Heilongjiang Province
A Novel Fusion Algorithm of Visible Image and Infrared Image Based on NSCT
Authors: Cao Zheng Hong , Guan Yu Dong , Wang Peng , Ti Chun Li
Published: January 2012

This paper focuses on the fusion method of visible image and infrared image, making in-depth discussion on the existing algorithms and proposes a novel method on the fusion rules. The image is firstly decomposed into low-frequency and high-frequency coefficients by NSCT and the characteristics of visible image and infrared image are then taken into account to finish the fusion. Finally, the quality of the fused image by different algorithms is compared with several existing criterions. MATLAB is employed to finish the simulation and the results will demonstrate this algorithm can improve the quality of the fused image effectively and the features in the image won’t be missing
Mine Gas Wireless Monitoring and Forecasting Network Based on Support Vector Machine
Authors: Li Zhen Bi , Jiang Yuan Yuan , Zhu Wei
Published: January 2012

Gas monitoring is considered as the most important mean in the safe production of coalmine. Time delay inevitably exists in the current gas monitoring technology widely used today. This research uses Support vector machine to forecast gas concentration. ZigBee wireless network protocol is adopted so that a wireless gas monitoring network with concentration predicting function is obtained. In this way the present time delay in Gas concentration monitoring will be improved and the scope of monitoring will be expanded at the same time
Design of Multi-Sensor Communication System of Wheelchair Robot Base on the CANopen
Authors: Wu Wei , Pan Zhen Dong , Cao Peng
Published: January 2012

This paper presents the communi-cation system of wheelchair robot which is based on CAN (Controller Area Network) bus and made up of PC/104PC, MCU and DSP system, which is distributed communication architecture. In this structure, the PC/104, as upper control computer, achieves communi-cation with the underlying control system MCU (DSP) through the CANopen protocol. At the same time, corresponding communication softwares are designed. Finally, the above-mentioned communication softwares are implemented by the wheelchair robot.
Protein Folding Simulation Based on Improved Simulated Annealing Algorithm
Authors: Liu Jing Fa , Zhou Zi Ling , Gao Ze Xu , Zhang Guo Jian
Published: January 2012

Protein folding problem is one of the most important problems in bioinformatics. By combining simulated annealing method with pull moves which is a local move set and conformation update mechanism, we put forward an improved simulated annealing (ISA) algorithm for the two-dimensional hydrophobic- polar (2D HP) protein folding problem. Numerical results show that the ISA algorithm can find the known lowest-energy ground state more rapidly and efficiently than the genetic algorithm (GA) for the several given HP sequences. For the sequence with length 20, we obtain the lower-energy conformation than GA. The performance of the algorithm show ISA is an effective method for protein folding simulation
Modeling and Analysis of Metabolism Process with Finite State Machine
Authors: Gao Rui , Hu Wen Song , Zhang Cheng Qiu
Published: January 2012

This paper extends our early study on discrete events system formulations of DNA hybridization, and focuses discussions on metabolism and gene mutation in Molecular Biology. Finite state machine (FSM) theory is extensively applied to represent key concepts and analyze the processes related to the biological phenomena mentioned above. The goal is to mathematically represent and interpret the process of metabolism and the effects to structures of protein macro molecule caused by gene mutation. We hope the proposed model will provide a foothold for introducing the information science and the control theory tools in Molecular Biology