bluuebunny/crossref_metadata_2025 huggingface dataset:
The Analysis and Improvement for Side Impact of Car Body Structure
Authors: Gong Ai Hong , Hu Ming Mao
Published: October 2013

Based on the finite element (FE) model and Moving Deformable barrier (MDB) model of a car side impact, the virtual test of the side impact was conducted with HYPERWORK software according to Euro-NCAP regulation. Then the impact performance was evaluated in both deformation and response curve of the car body, and the problem of the crashworthiness in designing the side structure was analyzed. Finally, the structure improvement with CATIA for the side crashworthiness was proposed. Keywords: CAE analyze, Side impact, Improvement
Influence of MoSi2 Addition in Co Based Alloy Cladding Coating on Microstructure Evolution and Pitting Corrosion Behaviour
Authors: Liang Ze Fen , Zheng Min
Published: October 2013

In the present paper the influence of the addition of MoSi2particles on the microstructure and pitting corrosion behaviour of laser cladding Co based alloy coatings deposited on 304 stainless steel substrate has been reported. The coating microstructure was investigated by SEM, OM, XRD and EPMA etc.. And the pitting corrosion resistance of coating was evaluated in the 3.5% NaCl solution. The results showed that: (1) The microstructure is fined by increasing MoSi2percentage. And the coating microstructure evolved from dendrites and interdendritic eutectics to various faceted dendrites with the bamboo leaf, flower, or butterfly morphology, when the MoSi2content is from 0~20% to 30~40%; (2) the (Epit-Eprot) of Co based alloy/MoSi2composite coating was lower than that of Co based alloy, and which presented higher self-repairing capability. The pitting potential Epitof Co +(0~20wt.%) MoSi2cladding coatings is higher than that of stainless steel, the pitting corrosion resistance is enhanced; When more MoSi2(30wt.%) was added, the pitting corrosion resistance decreases due to microstructure inhomogeneity and exiting of inclusion.
Electrochemical Analysis of the Phase Structures in Galvannealed Coatings
Authors: Yuan Xun Hua , Guo Da Wei , Jiang She Ming , Zhang Qi Fu
Published: October 2013

The electrolytic stripping technique (also known as coulometric dissolution) was a method to analysis the phase structure of galvannealed coating quantitatively, but the experimental data of electrolytic stripping cannot be used for straightforward Fe-Zn phase identification, and because quantification needs to take into account the effect of various electrochemical side-reactions. The applicability of electrolytic stripping for the phase analysis of galvannealed coatings was optimized in this article, Result show that electrolytic stripping technique can be applied to realize step-by-step dissolution of various phases species in the galvannealed coatings under the condition that the potential scanning rate was low enough, and the method allows the determination of the total Fe concentration, and the thickness and structure of the η, ζ, δ and Γ phases. Both the thickness and the various intermetallic phases content of the galvannealed coatings with different aluminum contents was characterized by the polarization curve of the electrolytic stripping technique and the proposed data analysis method, and combine the initial dissolution potential of every Fe-Zn phase in galvannealed coating.
Photoluminescence Properties of ZnO Thin Film Prepared by Sol-Gel Route
Authors: Hu Yong Jin , Pei Wu Yun , Ying Liu Guo , Jun Luo Shi
Published: October 2013

Temperature dependent photoluminescence (PL) properties of ZnO thin film prepared by sol-gel route were investigated. The excitonic-related emission peak at 3.336 eV dominates the spectra, and is attributed to the recombination of excitons bound to structural defects (DBX). Moreover, its thermal activation energy is 5.7 meV obtained by using least-squares fitting method. Compared to its larger localization energy, we propose that there exists a nonradiative relaxation path with energy released during the formation of DBX. The observed peak position of blue emission is in line with theoretical energy interval between the interstitial zinc level and valence band.
Study on the Method of Typical Defects in Butt Welding of 20 Steel
Authors: Zhang Peng Lin , Zhao Zhi Qiang , Sang Yuan , Xu Ya Xing
Published: October 2013

Nondestructive test in the power, petroleum, chemical industry, aviation, aerospace, marine, etc have been widely used in the field, that can more accurately detect magnetic products and the workpiece surface and internal defects, can effectively reduce the risk of accidents from happening. Methods for magnetic particle testing beginners the defects on the surface and nearsurface defects of the learning and understanding of needs, effectively grasp of crack defects identification and quantification methods, articles to the typical method of crack defect detection were studied, produced can be used for comparison of magnetic particle inspection of training and engineering, defect rate of 80%.
Forming Load Calculation of Hot Precision Forging of Cylindrical Gears
Authors: Zuo Bin , Wang Bao Yu , Yang Le Yi
Published: October 2013

The Tooth Impact Factor was defined and introduced into the formula of forming load of closed-upsetting. Thus the formula for calculating the forming load of hot precision forging of cylindrical gears was put forward. The equation for the Tooth Impact Factor was fitted using the data from FE simulation of forging process in which gears with different modules were forged. Some forging tests for gears were conducted and the forming load was measured to ensure the validity of the formula. The tests also revealed that the formula is suitable for forming load calculation of hot precision forging of both spur and helical gears in a wide size range.
Fabrication and Corrosion Properties of Electroplated Ni-Co-Cr Alloy Coatings
Authors: Yang Tian , Peng Cheng Zhang , Xiang Lang , Cao Huo
Published: October 2013

The electroplated Ni-Co-Cr coatings were prepared on surface of a low carbon steel. The microstructure of the deposits were analyzed by scanning electron microscope (SEM) and X-ray diffraction (XRD), the corrosion resistance of the deposits was evaluated using neutral salt-spray test and polarization measurement. The results show that the deposits are a Co and Cr solid solution in Ni with a grain size of 6.9~10.6nm, were nearly free of corrosion after neutral salt-spray tested 100 hours. With chromium content increasing, the coatings exhibited higher corrosion potential and lower corrosion current, which revealed excellent corrosion resistance.
The Advances in Research of Complexes of Chitosan and its Derivatives
Authors: Ma Feng , Lu Feng Yan
Published: October 2013

Chitosan is a partially deacetylated polymer of acetyl glucosamine obtained byalkaline deacetylation of chitin. It displays interesting properties such as biocompatibility, biodegradability as its degradation products are non-toxic, non-immunogenic, and non-carcinogenic. It can be modified chemically for the presence of amino and hydroxyl groups to prepare functional derivatives of chitosan. Chitosan and its derivatives have good adsorption ability for metal ions due to theirs high percentage of nitrogen, amino and hydroxyl groups on their chemical structure act as chelation sites for metal ions. This article reviews the developments of the studies on coordination between chitosan, derivatives and metal ions, as well as the applications of chitosan-based complexes in many fields such as antibacterial effect, the catalysts, metal recovery and detection, and agriculture.
Synthesis, Morphology and Hydrophobicity of Core-Shell Fluoinated Copolymer Latexes
Authors: Guo Ping , Zhao Xiao , Xiao Zheng Gang
Published: October 2013

The fluoroacrylate copolymer latexes (Poly (BA-MMA-DFMA) latex) with a fluorinated shell were successfully synthesized by semi-continuous seeded emulsion polymerization. The chemical structure of the latex was characterized by Fourier transform infrared (FTIR) and 1H-NMR analysis. Glass transition temperatures (Tg) of Poly (BA-MMA-DFMA) latex were confirmed by DSC analysis. Transmission electron microscopy (TEM) showed the microstructure of Poly (BA-MMA-DFMA) latex. The water absorption ratio and the water contact angle (WCA) of films were studied. Results showed the Poly (BA-MMA-DFMA) latex had two distinct Tg and exhibited core-shell structure. Moreover, Poly (BA-MMA-DFMA) film with 15wt% DFMA can exhibit lower water absorption ratio and higher contact angle.
Surface Hardening of a Vermicular Cast Iron Used for Integral Molding Valve Seat by High Power Laser
Authors: Pang Ming , He Wei , Liu Chang Zhen , Wang Xu Lan , Kang Xue Bin
Published: October 2013

Surface hardening intergal molding valve seat of a vermicular cast Iron was done by Nd:YAG high power laser. The effect of laser parameters on microstructure, hardness and surface quality were conducted by scanning electron microscopy (SEM) ,optical microscopy (OM) and microhardness tester. The results show that The hardening layer of free defect can be obtained with suitable laser processing conditions. The shape of crescent can be observed in the laser hardening layer.The hardening layer consists of melted zone and heat-affected zone.Ledeburite, martensite and remainder austenite can be observed in the melted zone.The heat-affected zone consists of martensite and remainder austenite with retained vermicular graphite.Laser hardening layer has no-uniformity distribution of rigidity due to no-equilibrium calefaction and cooling.The defect of sunen disfigurement can be restrained by reducing heat-input in the ending zone.
Effect of Activating Hot Dipping Aluminum Process on High Strength Steel and Aluminum Alloy Welding Properties
Authors: Xu Yan , Zhang Yuan Hao , Yu Chi Bin
Published: October 2013

Technology of activating hot-dipped aluminum on high strength steel was studied, activating time and aluminizing time was also analyzed, and the optimal activating time and aluminizing time was concluded in the end. The results showed that the optimum activating treating time was 14s in this paper. At this time the degree of corrosion on steel plate surface is the most suitable for aluminizing. The proper aluminizing treating time was 14s in this experiment. In this condition, the strength of the joint could reach up to 136N/mm. Welding between activated hot-dip aluminizing steel and aluminum alloy can be got good weld joint appearance and metallurgical bonding.
Orientation Relationship between Fe2M and Martensite in M50NiL Steel
Authors: Lou Yan Zhi
Published: October 2013

In this paper, high resolution electron microscopy (HREM) was used to observe nanosized Fe2M precipitates in M50NiL steel, and crystal structure of which was also investigated by selected area electron diffraction (SAED). At the same time, the orientation relationship between the Fe2M and the martensite matrix was also studied. The results suggested that crystal structure of Fe2M is close-packed hexagonal, and lattice parameters about a=b=0.473nm, c=0.772nm, α=β=90°, γ=120°. The orientation relationship between the nanoprecipitates Fe2M and martensite is and .
Experimental Study of Solid Dispersion in a Seeded Precipitation Tank with Slight Agitation for Gibbsite Crystallization
Authors: Ding Yuan Fa , Su Xiang Dong , Hu Da Qiao , Liu Jian Kang , He Li , Li Dan Ning
Published: October 2013

In order to explore the energy saving measures in gibbsite crystallization process for alumina production by Bayer method, industrial experiment was carried out to investigate the solid dispersion in a slight agitation seed precipitation tank for gibbsite crystallization. The experimental results showed that little difference of solid concentration, only 48.19 g·l-1is found in the range from 5 meters depth to the tank bottom, which is the most zone of the tank, and there is a somewhat large difference in the top 5 meters zone near the surface that is about 149.66 g·l-1. Therefore, under the condition of slight agitation, solid content would not concentrate to the tank bottom completely with the normal work flow. It is suggested that the work of production would not be interrupted in less agitation than before, and the electrical energy saving rate is about 34%. The effects of reduced agitation on the yield and the quality of gibbsite crystallization should be studied carefully in subsequent works.
HREM Study on Heterogeneous Formation of Titanium Carbonitride in Ti Microalloyed Steel
Authors: Lou Yan Zhi
Published: October 2013

HREM study on Ti-carbonitride particles in Ti-microalloyed steels has been carried out. It shows that many tiny Ti-carbonitride precipitates formed on nitride, sulfide or oxide particles. These carbonitrides possess twin relationship or have continuous interface with the particles existed already. The results imply that the twinning and epitaxial growth may be the important mechanisms for Ti-carbonitride formation in the steels. These nucleation mechanisms can highly lower the interfacial energy of new precipitates, resulting in the nucleation rate greatly increased. Therefore, the mechanical properties of the Ti-microalloyed steels are effectively improved.
Investigation of the Mechanical Properties of Nanocrystalline Cemented Carbides by Nano-Indentation Technique
Authors: Liu Xue Mei , Song Xiao Yan , Wang Hai Bin , Wang Yao , Gao Yang , Wang Xin Long
Published: October 2013

The nanocrystalline WC-Co bulk material with a relative density of 98.5% was prepared by combing in-situ reduction and carbonization reactions and spark plasma sintering method. Using continuous stiffness measurement method in the nanoindentation technique, the high precision modulus and hardness of the material were measured.
Application of Intelligent Expert System on Growth Model of Plant
Authors: Zhang Wen Qing , Li Yuan , Liu Xu Guang , Liu Xu Ning
Published: October 2013

In order to simulate growth process of plant, and visually display the growth development of plant under different physiological and ecological factors, the growth model is investigated from the perspective of intelligent expert system. The paper analyzes the structure mechanism of plant growth, introduces the construction process of plant growth model, presents the research of expert system, then discusses the integration mechanism of plant growth model and agricultural intelligent system, proposes the combination frame of the physiological and ecological models of plant, contributing to decision-making of expert system and visually showing the growth process of plant. The practice indicates that the system greatly improves the accuracy and reliability of the model simulation of plant growth and has great significance in improving the management level of plant growth.
Research on Unmanned Helicopter Communication System Based on μC/OS-II Operating System
Authors: He Meng Lin , Luo Ning , Amenuvor Andrew Cudzo
Published: October 2013

Recent years, Unmanned Aerial Vehicle (UAV) has gained great attention and importance both in civil and military applications all over the world. Ground Monitoring and Control System (GMCS) is an important part of the entire unmanned helicopter system. As UAV develops rapidly, the functions and tasks are becoming increasingly complex, and the ground control station needs to collect more data. In addition, establishing a real-time and reliable communication system has become an important part of the control system of UAVs. The μC/OS-II operating system has the characteristics of modular application which can be used for multiple task operations, and can satisfy the requirement of real time system very well. And the system was successfully applicable to practical UAV fighter and the setting up of The Ground Monitoring Station.
Local and Global Contrast for Saliency Estimate in DCT Domain
Authors: Ling Nan Ping , Zhang Han Ling
Published: October 2013

In this paper, we present a new bottom-up visual saliency model, which utilizes local and global contrast method to calculate the saliency in DCT domain. Our proposed method is firstly used in the DCT domain. The local contrast method uses the center-surround operation to compute the local saliency, and the global contrast method calculate the dissimilarity between DCT blocks of image and any other DCT blocks in any location. The final saliency is generated by combining the local with global contrast saliency. Experimental evaluation on a publicly available benchmark dataset shows the proposed model can acquire state-of-the-art results and outperform the other models in terms of the ROC area.
Measurement and Characterization the Flocculation Processes by PIV
Authors: Gao Jun Feng
Published: October 2013

Particle image velocimetry (PIV) was applied to characterize the morphological changes of flocs and to acquired velocity field data in the flocculation process in Taylor-Couette reactor. By use of PIV the morphological of the flocs with ferric trichloride (FeCl3) could be characterized and described with good performance, the velocity vector also could be measurement. It was shown that the flocculation efficiencies reached the maximum values and the size of the generated flocs was the biggest when the roating speed was in the range between 20~60 rpm. It was demonstrated that PIV can be exploited as a useful tool in the in-situ observation the flocculation processes.
Keywords: flocs morphology; flocculation efficiencies; velocity vector; PIV
Study on Forming Process of the Oil Pipe with Upset Ends
Authors: Kong Ling , Liu Yan Kai
Published: October 2013

In this paper, a stepped die forging is built and the deformation regularity of the Φ73.02*5.51 oil pipe with upset ends is analyzed by a 3D simulation software. The suitable die is designed and is popularized in the actual production.
Research of PDM System Based on Solid Edge Insight
Authors: Mao Jiao Jie , Shen Guo Qiang
Published: October 2013

Discuss the design of product data management (PDM) system based on Solid Edge Insight: Managed the different user roles by using the Windows SharePoint Services 3.0; Informed file changes to related staff timely by mail server to achieve the collaborative work between different designers that greatly improved design efficiency; Realized online browsing the Solid Edge files and their properties and BOM list via web part provided by the Insight, which made the system more humanized and visualization; Realized document libraries search by using its search view; Introduced the secure sockets layer (SSL) to encrypt network transmission system, which made the system safer and more reliable. Practice results show that this PDM system is able to fulfill the demand of online browsing and managing CAD products or related documents in minor enterprises.
The Stability of the Second-Order Model of the Damping Single Maching Infinite Bus Bar System
Authors: Luo Hong Ying , Liu Jun , Li Long Xing
Published: October 2013

This paper studies the stability of the second-order model of the damping single machine infinite bus bar system,by constructing a suitable Lyapunov function method,and discuss the stability of the equilibrium point,then obtains the attractive area.
Study on the Application of Damping Control Method in Multi-Solution Interval of the QZS System
Authors: Yang Qing Chao , Lou Jing Jun , Diao Ai Min
Published: October 2013

The quasi-zero-stiffness system (QZS) is a nonlinear vibration isolation system, when the excitation frequency is in the multi-solution domain, the system may malfunctions in vibration attenuation. To solve this problem, the damping control method is introduced in this paper. The main idea is that the response on the resonance branch with large amplitude can switches to the non-resonance branch with small amplitude by controlling system damping, and it can stay on the non-resonance branch in the next process, which makes vibration isolation is also available in this interval. During this process, the Van den Pol plane is used to determine the time of which damping control can be withdrawn.
Parallel Rendering Strategies for 3D Emulational Scene of Live Working
Authors: Li Xiao Feng , Fan Peng , Liu Xiao Hua , Wang Xing Chao , Hu Chuan , Liu Chun Xiang , Bie Shi Guang
Published: October 2013

Because of abundant deep scene nodes in 3D emulational scene of live working, the existing three-dimensional scene data organization methods and rendering strategies have many flaws, such as the jumping of rendering and the delay of interactive response. A real-time rendering method for huge amount of urban data was presented utilizing the techniques such as identifying model that is based on multi-grid block partition, thread pool, caching and real time external memory scheduling algorithms. The whole scene was partitioned into blocks of different size and the blocks were arranged with multi-grid which is related to model ID and tile ID to accelerate model scheduling. Fast clipping was achieved through the nailing of position and direction of block-based view frustum, and touching task of data downloading off into thread pool executed in background which achieve the dynamic data loading and parallelism of three-dimensional scene rendering. To solve the choke point at computer hardware, in-out memory scheduling algorithms are adopted to eliminate invisible scene models and recycle dirty data in memory. Experimental results showed that the method is very efficient and suitable for applications in massive urban models rendering and interactive walkthrough.
A Modified Version of the K-Means Algorithm Based on the Shape Similarity Distance
Authors: Li Dan , Li Xin Bao
Published: October 2013

K-means Algorithm is a popular method in cluster analysis, and it is most based on the Euclidean distance. In this paper, a modified version of the K-means algorithm based on the shape similarity distance (SSD-K-means) is presented. The shape similarity distance is one kind of non-metric distance measure for similarity estimation based on the characteristic of differences. To demonstrate the effectiveness of the method we proposed, this new algorithm has been tested on three shape data datasets. Experiment results prove that the performance of the SSD-K-means is better than those of the classical K-means algorithm based on the traditional Euclidean and Manhattan distances.
An Image Fusion Method Based on Fuzzy Regional Characteristics
Authors: Ma Jun Yong , Zhang Sheng Wei , Yue Cai Bing
Published: October 2013

An image fusion method based on fuzzy regional characteristics is proposed in this paper. After the multi-resolution decomposition of an image, k-mean clustering is firstly done for the low frequency components of the each layer to decompose the low frequency image into important region, sub important region and background region. Then, all areas of the image are fuzzificated and fusion strategies are determined according to their fuzzy membership degrees. Finally, fusion result is obtained by the reconstruction from the multiresolution image representation. Experimental results and fusion quality assessments show the effectiveness of the proposed fusion method.
Stock Index Prediction Based on Multi-Level Transfer Function Quantum Neural Tree
Authors: Teng Hao , Liu Shu Hui , Chen Yue Hui
Published: October 2013

The FlexibleNeural Tree uses a tree structure coding and has excellent predictiveability and function approximation capabilities. Due to it, a quantum neural tree model ispresented based on the multi-level transfer function quantum neuralnetwork and Flexible Neural Tree. In the new model, based on the structure of FlexibleNeural Tree, the transfer function of hidden layer quantum neurons is insteadof multiple superposition oftraditional transfer function, makes the model has a kind of inherent ambiguity.This paper used the improved neural tree asprediction model, particle swarm optimization to optimize the parameters of neuraltree, used probabilistic incremental program evolution to optimizethe structure of neural tree. The experiment result for stock index predictionshows the now method can improve the predictive accuracy rate
AC-DC Decoupling Algorithm of Optimal Power Flow with HVDC System
Authors: Ji Cong , Wei Zhi Nong , Sun Guo Qiang , Sun Yong Hui
Published: October 2013

To calculate optimal power flow (OPF) with high voltage direct current (HVDC) system, AC-DC system variables are used to be optimized together. Since there are many HVDC variables, more formula derivation and coding of Jacobi matrix and Hessian Matrix are needed in the calculation. Considering DC system characteristic of OPF with HVDC system, a method of alternative iteration of AC-DC system is presented in this paper, which could take advantage of the existing AC system OPF program and extend to calculate OPF with HVDC system. Simulation and comparison results indicate that, the OPF calculating method of alternative iteration of AC-DC system presented in this paper has good convergence, strong adaptability and high accuracy
Material Texture Image Model Optimization and Result Analysis
Authors: Zhou Yan , Chen Lu Wei , Tang Ruo Yue
Published: October 2013

Targeted in the quantitative description of the relationship between the materials subjective features and objective parameters, this study builds a mathematical model by BP neural network. Then optimization of the thresholds and weights of BP material texture models is conducted to refine the accuracy and description ability of this network. Through the analysis of the result of GA-BP Model, the foundation established by the summary of relationship between the texture image and the objective material parameters can be used to forecast the emotional characters of the materials whose objective parameters are previously understood.
Calculation of the Average Length of Functionalized MWCNTs
Authors: Wang Yu Ying , Liu Mei
Published: October 2013

Using an exponential function to calculate the length of functionalized MWCNTs by various oxidation time and temperature. A scanning electron microscopy (SEM) was used to observed the morphologies of MWCNTs oxidized under various conditions. With the refluxing time and temperature increasing, the length of MWCNTs decreased dramatically.
Research on Application of Wavelet Denoising Method Based on Signal to Noise Ratio in the Bench Test
Authors: Zhong Jian Jun , Fang Sheng Nan , Linghu Chang Ying
Published: October 2013

During the tests of the vehicle automatic transmission bench, the acceleration signal is needed to be denoised. As a means of denoising, wavelet threshold denoising method has small amount of calculation and better filtering effect. However, adopting different wavelet basis functions as well as different threshold rules might have a direct effect on the signal denoising. In this paper, we firstly construct the simulated noisy signal approximated to the observed signal, and then do the signal denoising experiment of parameter matching. Secondly, seven Symlets wavelet basis functions and four classical wavelet threshold rules are selected and tested one by one. Signal to noise ratio (SNR) and root mean square error (RMSE) of the denoised signal, the evaluation indicators, are calculated and carried out in accordance with the merits of denoising effect. Thus the optimal combination of the fixed threshold rule and sym8 wavelet basis function is obtained. Finally, this combination is used in the bench test to denoise the angular acceleration signal, and good filtering effect is achieved.
Fuzzy Domain Image Segmentation Based on Space Information
Authors: Zhang Xin Bo , Zhu Xiang Long
Published: October 2013

Synthetic aperture radar (SAR) Image containing the coherent speckle noise, traditional methods can't very well to SAR image segmentation, based on SAR image grayscale distribution model, this paper proposes a combination of pixel gray level and area information of the image segmentation method. First of all, based on SAR image in all kinds of feature of gray histogram presents the facts of the Rayleigh distribution, fitting of image gray level of probability density distribution; Then use fuzzy biggest office methods select the optimal threshold, and the resulting statistics as the related parameters of image, the image blur ; Then to 3 x3 neighborhood pixels within the membership degree of fuzzy characteristics of Kohonen self-organizing map neural network is adopted to improve the coarse segmentation, the segmentation of noise and boundary classes pixels using a region growing technique relaxation iteration to fine segmentation.
Simulation Analysis for Sensitivity Distribution of Aero-Engine Inlet Electrostatic Sensor
Authors: Liu Jie , Zuo Hong Fu , Fu Yu , Yin Yi Bing
Published: October 2013

It was hard to obtain sensitivity distribution of Inlet electrostatic sensor by mathematical model and analytic method. To this problem, the sensing model and sensitivity function of circular electrostatic sensor were established by Point-charge principle. In addition, the main factors to electrostatic sensor sensitivity were analyzed and discussed by ANSYS with an optimized probe size. Accordingly, this simulation analysis had provided a theoretical basis and guidance for latter designs of inlet electrostatic sensor as well as guidance for structures of experimental environment of aero-engine gas path.
A Ceramic Filter Counter Blowing Regeneration Control System
Authors: Diao Xi Lian
Published: October 2013

This paper developed a high efficiency, simple to use and reliable, strong practicability of model 6120 diesel particulate filter regeneration control pulse inverse blow system. The pulse counter blowing regeneration test, and post-processing of particles back down to do the further research. The experimental results show that this device can wall honeycomb ceramic filter for filtering and counter blowing regeneration test and research.
Eye State Detection Based on Embedded Linux System
Authors: Li Rui , Wang Xin , Jiang Jian Chun , Yang Hong Yun
Published: October 2013

Eye state detection is dramatically influenced by the position of iris, for this reason, this paper proposed an eye state detection method combined the area between the eyelid with the eyelid contour. By modifying and transplanting V4L-utils and OpenCV image processing library, video capture and display software is built on the Cortex-A8 embedded system. Through experimental verification, the embedded system can realize the acquisition, processing and display of the video stream and the eye state detection algorithm also has high accuracy.
Texture Feature-Based Particle Filter Video Tracking Using Cooccurrence Matrices
Authors: Zhang Tao , Chen Yu Qing , Yu Xiang Yu
Published: October 2013

.In this paper, a video tracking approach based on particle filter is proposed. Texture information is used instead of color. In the proposed approach, gray cooccurrence matrices are used as the texture metric. Experimental results show that the proposed algorithm lead to better result than color feature-based particle filter-based video tracking algorithm and is an effective tool for complicated video tracking application.
Automotive CAN Bus Diagnostic Device Development
Authors: Luo Feng , Feng Hui Yan , Liu Chu
Published: October 2013

This paper presents a universal CAN Bus diagnostic device that is developed based on the Freescale 32-bit microcontroller MCF51JM128, which complies with OBD-II standard. Specific OBD-II diagnostic services can be performed through the USB request commands from PC software, which is built by Embarcadero Delphi XE; the diagnostic data are collected by the diagnostic device hardware and transferred to the PC for diagnostic result display. Besides, wireless and remote OBD diagnostics can be achieved through the serial interface connection with other communication devices.
A Palmprint Recognition Based on Collaborative Representation
Authors: Guo Xiu Mei , Wan Lin Mei , Wang Cheng Yi
Published: October 2013

As a recently proposed technique, sparse representation (SR) has been widely used for pattern recognition. Sparse representation emphasizes the coefficient sparsity and ignores the importance of the collaboration between classes. In this paper, collaborative representation is introduced for palmprint recognition, and the inter-class collaboration is employed to estimate the representation coefficient with regularized least square method. The algorithm based on collaborative representation was evaluated on the Hong Kong PolyU (v2) palmprint database and ideal recognition performance was achieved.
Research on Core Competitiveness of Real Estate Enterprise Based on Factor Analysis and Clustering Analysis
Authors: Wang Ying , Wang Er Tao
Published: October 2013

From their own characteristics and actual situation of real estate enterprise, according to the connotation of core competitiveness, through different angles, the paper builds up the index system of the real estate enterprises core competitiveness. Then calculate the core competitiveness of 40 samples with factor analysis method and get the comprehensive score. Found that management ability and operation ability are important factors to decide the real estate enterprises core competitiveness .Based on this study use cluster analysis to classify 40 samples and make comments and suggestions accordingly.
Research of Radar Waveform Based on Pulse Position Jitter and Relative LPI Performance Analysis
Authors: Tian Gao , Yang Yan , Qi Wang
Published: October 2013

The low probability of intercept (LPI) radar waveform is reflected in a lower pulse power and complex structure of the pulse series. The previous one ensures that it avoids being intercepted by the electronic measures system (ESM) carried by the goal; the latter makes it difficult for ESM to separate and identify. As for pulse position jitter pulse array, because of pulse position's random jitter in a specific pulse interval of the pulse repetition interval (PRI), the spectrum broadens and spectral density reduces, making it hard for the ESM to intercept. Meanwhile, because the waveform doesn't have a fixed PRI, it's also difficult to be sorted or identified Therefore pulse position jitter waveform is a rational LPI waveform. Combined with a design about the LPI radar signal waveform, this paper carries out a research on PRI jitter waveform, and provides a waveform generating and echo signal processing method; then the paper simulates the LPI characteristics and comes to a conclusion which has an important applying value .
The Research on Development Status and Key Technology of Elastic Wave CT
Authors: Yang Lei
Published: October 2013

After introducing the basic definition, technical principle and applied scope of elastic wave CT technology, the paper makes a detailed introduction of the development process of elastic wave CT technology domestic and overseas and main technical problems it faces and believes that the imagining precision of elastic wave CT is often influenced by various factors such as the observation system, test precision, imaging method and error control. Thereinto, the hot issue in the research is put onto the study about inversion algorithm and the paper also elaborates the research direction and development tendency of current inversion algorithm at home and abroad.
The Research of Intelligent Seat Belt Pretension System Based on Active Safety
Authors: Guan Zhi Wei , Yang Ling , Zheng Ming Feng , Yan Guang Hui
Published: October 2013

Six early-warnning subsystems are build, the control parameters of tension value and time for seat belt are determined, based on the analysis of function and components for intelligent seat belt pretension system. The hardware and software are designed, the software for seat belt retractor motor is integrated to set the ralative time distance, vehicle yaw rate, steering wheel angle, vehicle deceleration, this four signals which are used as input for simulation, the output show that the tension value and tension force are directly proportional to input signal, which can be early warn for intelligent seat belt successfully and provide passengers active safety effectively.
Research on Passivity-Based ADRC of Direct-Drive Wind Power System Back to Back PWM Converter
Authors: Ma Xian Qin , Wang Jiu He
Published: October 2013

In order to improve the performance of the converter for restrain the machine-side PWM rectifier load disturbance impact on the output DC voltage in direct-drive wind power system. A hybrid control strategy based on ADRC and the EL model was presented, using ESO to observe and compensate the load disturbances, achieving voltage outer control by ADRC method and comparing with PI control. However, as to grid-side PWM inverter, energy shaping method which based on PCHD model and the IDA-PBC control algorithm is adopted to design passivity-based controller, which is able to make the energy function have the minimum value when inverter is at the desired point, thus improving the stability and the load disturbance-rejection ability for the inverter. Simulation results show that the machine-side PWM rectifier can make the currents and voltages of AC side achieve synchronous, DC voltage can fast-track desired values; grid-side PWM inverter can achieve unity power factor and make the AC current sinusoidal.
Servo-Control System Design of Automatic Production Line Based on PLC and HMI
Authors: Lei Sheng Yong
Published: October 2013

Automatic production line includes machinery, electric, control, communication and other multi-disciplinary technologies and knowledge. It is an ideal training platform for students majored in mechatronics and electric automation. In the designing of platform, however, the difficulty lies in the precise delivery and position control of linear guide rail system. To address this problem, this paper aims at designing an AC servo-control system based on PLC, AC servo driver, servo motor and human-machine interface (HMI) and elaborates the principle of servo-control system, circuit design and software design. The system will achieve reliable delivery and precise positioning with position error less than 1 mm, which, with great application value, will meet the actual demand from industrial production.
Design of Brushless DC Motor Controller Based on DSP
Authors: Yu Yan Xin , Sun Rong Chun
Published: October 2013

The brushless DC motor (BLDCM) which is a kind of mechatronics products has many features, such as light weight, small volume, little inertia, high efficiency, easy to be controlled, and so on. BLDCM reserves many excellent mechanical characteristics of other ordinary DC motor which can be widely used in servocontrol, numerical control machine and robot etc. It is very significant to study a control system with quick response, powerful regulation capability and high precision. In this paper, the basic operation principle, composing parts, running characteristic and transfer function of BLDCM are discussed. Hardware part and software part of the system according to the preceding solutions are realized. As opposed to the conventional controller, the system has a better static, dynamic performance, and has a strong adaptability in changes of the parameters and the load disturbance, and achieves good control effect.
Supply Chain Design Strategy Based on E-Commerce
Authors: Zhou Yong , Qi Jing
Published: October 2013

Supply chain management is a multi-level, multi-objective system engineering. With the continuous development of supply chain for the survival in the market environment, the core task of supply chain management is also changing, Enterprises will face the new environment of e-commerce with the implementation of supply chain management. E-commerce create new opportunities for the supply chain management. Meanwhile, it also presents new challenges to the supply chain management. So, SCE must make the corresponding adjustment and reconstruction according to the E-commerce environment. This paper discussed the steps of supply chain design based on e-commerce environment. The purpose of this is to maximize the efficiency of logistics, information flow and capital flow and to achieve the ideal supply chain finally.
The Obstructions that Hamper the Use of BIM in China and its Solutions
Authors: Shao Bi Lin , Liu Bo Qiang , Yang Min Min
Published: October 2013

In recent years, Building Information Modeling has been more and more used in China's building industry. However, several resistances that hamper the use of BIM in China appear in the process of BIM implementation. And this research intents to identify these obstructions and find the solutions. Key words: BIM; BIM Implementation In China ; Obstruction; Solutions
Comparative Study of Well Known Sequencing Methodologies and Differential Evolution: A Case Study of Thailand Garment Industries
Authors: Ruekkasaem Lakkana , Srikun Isaree , Aungkulanon Pasura
Published: October 2013

The objective of this research is to study the problem and efficiency improvement of the clean room garment factory. The methods of production schedule were performed by heuristic technique of well-known scheduling methodologies including Shortest Processing Time, , Earliest Due Date, First Come First Serve method and Differential Evolution Method (DE). All methods can help to reduce the costs of delay shipment and time loss in various case studies. They were applied to the production order in 2 months after flooding problems in Thailand .The demand has a lot of quantities over production capacity. The results showed that the rules of Earliest Due Date method (EDD) is a powerful methodology for increasing production efficiency and minimizing make span. Whereas, the First Come First Serve (FCFS) method is the best method for finding a minimum value of total late job. Finally, Differential Evolution Method (DE) is the best method for finding a minimize value of average tardiness job.
Cognitive Characteristics of Industrial Architecture
Authors: He Jun Hua
Published: October 2013

Construction of industrial buildings around the world, more and more out of the simple steps to streamline the design mode, progressive culture and the spirit of the times. While many large public buildings also draws on the design method of industrial architecture, civil and industrial construction from modeling to structural, surface, space, roofs and so on, more and more blurred. It's going to be an interesting discussion. About how to discern the modern industrial building.
The Design and the Development of Shading Jacquard Fabrics for Curtains
Authors: Yang L.L. , Yu D.M. , Chen X.F. , Zhang S.C. , Zhang Hong Xia
Published: October 2013

This research use a reasonable mix of materials and the structures to achieve highly shading performance of curtain fabrics. Choosing jacquard double layers structure and black passee as layer parallel with ratio of 2:1:1. Meanwhile, the thesis puts forward a pattern of the shading curtain fabrics. It has two series of color, the spring & the summer color and the autumn & winter color. To show the matching effect of the curtains, photos of indoor simulation by 3DMAX has made. Then the pattern samples were woven. Shading performance of samples were tested and analyzed. Finally a product simulation curtains were produced. Through the test of fabric shading, the shading rate is over 98%, which proves that they have good shading performance. And the average shading rate is over 99.4% which meet the full shading standard.
Development Status and Prospect of Forestry Machinery in China
Authors: Li Yun Yu , Ban Zhi Chao
Published: October 2013

China has entered the implementation period of the twelfth five-year plan. In this macro economic environment, the acceleration of urbanization has promoted the prevailing of forestry mechanization. This article discusses the current application status, and puts forward the direction of forestry industry in China to realize its “Chinese Dream” and to speed up the process of forestry mechanization in china.
Offshoring Floating Wind Turbine Platform Initial Design Requirement Considering Whole-Life Cycle
Authors: Wang Hai Feng , Fan You Hua
Published: October 2013

Because the demand for renewable energy has increased significantly and fixed wind turbine supporting platform meets difficulty when used in about more than 30m water depths, offshoring floating wind turbine supporting platform becomes an active research field.A numberof initial designs have been studied in literature based on a limited and simple requirement not considering whole-life cycle of the offshoring floating wind turbine platform. In this paper, first to supposea new requirement to initial design considering whole-life cycle from installation to operation and extreme condition; second to verify a tension leg wind turbine platform (TLWPT) design utilizing new requirement and give final conclusion.
Drilling and Riveting Agencies Rigid Structural Dynamics Analysis of Virtual Prototype
Authors: Chen Can , Zhang Lei
Published: October 2013

Based on Pro/E and ADAMS software to establish drill riveting mechanism of virtual prototype, and complete the mechanism of rigid dynamics analysis, obtained the displacement, velocity, acceleration, correlation curve of the stress size, drilling for the further research on the mechanical performance of organizations and riveting optimization provides reference basis.
On the Performance of 17Ni/(10NiO-NiFe2O4) Cermet by Hot-Press Sintering Technology: Sintering Temperature Effects
Authors: Dong Wen Zheng , Lin Qi Quan , Jiang Tao , Wang Zhi Gang
Published: October 2013

The sintering behavior and the resulting of cermet are influenced not only by the characteristics and impurities of the raw materials but also are found to be dependent on the thermal history during the fabrication process. Our work is concerned with the effect of sintering temperature on the mechanical properties of 17Ni/(10NiO-NiFe2O4) cermet. The nickel ferrite based cermet were prepared by hot-press sintering technology at 16MPa and sintered at temperatures ranging from 900 to 1200°C. The microstructure, phase compositions and mechanical properties were studied by SEM, XRD and three point bending strength tests respectively. It has been found that, the relative density, hardness and bending strength of NiFe2O4 based cermet have a great influence upon the sintering temperature, and an optimal sintering temperature, e.g. 1100°C is chosen through our experiments. The highest bending strength of 125.89Mpa could be obtained under the sintering temperature of 1100°C. Meanwhile, the thermal shock resistance increases as the sintering temperature increases.
Numerical Simulation on Penetration into Double Plates of Annular Jet
Authors: Fu Lei , Wang Wei Li , Huang Xue Feng , Jiang Ying Zi , Fan Zhuang Qing
Published: October 2013

A new shaped charge annular cutter structure is put forward, and the process of annular jet formation and penetration into double plates is simulated by using ANSYS/LS-DYNA software. The kinematic characteristic of annular jet in the air is analysed. The damage effect on the plates is got. The simulation results show that an intilted phenomenon exists on the forming process of annual jet, and the annular jet is stretched into several annular penetrators after penetrating the upper plate. The annular jet formed by annular cutter shaped charge in the paper can realize effective penetration into double plates, and the results can provide reference for the design of tandem warhead front shaped charge.
Study on the Optimization of Public Construction Project Duration
Authors: Luo Fu Zhou , Shang Jing Yu , Zhou Yan
Published: October 2013

This article gathers 16 factors which influence the duration of public construction project on the basis of research and analysis, and forms hierarchical relationships and causal relationships of the factors through improved interpretive structural model. Finally, comes up with several recommendations on the issue, further，the research and discussion on public construction project control and optimization of construction duration of our country are carried out.