bluuebunny/crossref_metadata_2025 huggingface dataset:
Arabidopsis Growth Analysis Using Image Processing Technology
Authors: Ke Qiu Hong , Zhang Jun Mei , Tian Ye
Published: June 2013

This paper describes the use of image processing technology on the measurement of Arabidopsis leaf areas. Firstly, a black and white checkerboard was used to correct the image. This was done by finding the corner of the grid and performing affine transformation. The corners were also used to calculate the number of pixels of the checkerboard grid. Secondly, the plants were segmented with the values of the red, green, blue components of each pixel. Finally, the areas were calculated with the number of the pixels of the plants and the checkerboard grid in the image, as well as the real area of the board grid. The result has shown that this non-destructive method can reflect the growth rate by measuring the areas of the Arabidopsis leaves.
An Approach to Detection of Solder Joints on Printed Circuit Boards
Authors: Tong Xiao Su
Published: June 2013

To automate present Automatic Optical Inspection (AOI) systems, an intelligent method based on lightness analysis for solder joints detection is proposed in this paper. Firstly, the image taken from real printed circuit board (PCB) is preprocessed and segmented. Then, we compute the image similarity by calculating the Euclidean distance. If the similarity exceeds the threshold, we extract the lightness of solder joints by converting between RGB color mode and HLS color mode. Lastly, all the defects of solder joints are classified into several different types according to their lightness appearances. Experiment results show that the method deduced in this paper can detect accurately solder defects from different patches.
New Camera Parameters Calibration Method of Binocular Vision System
Authors: Ren Hong E , Li Si
Published: June 2013

About the key problems of the binocular vision system design which was used to video log examining, and according to the binocular parallax theory and triangle measuring theory, the paper researched the basic principle of camera imaging, proposed the camera parameters calibration method that could determine the best placed baseline distance of two cameras and the camera focal length together, inferred the relationship of the best baseline distance and the camera focal length by analyzing to many groups calibration results. The simulation experiment results show that this method is simple, practical, and has a high precision, provides a theoretical basis for design of tow cameras positions in the binocular vision system.
The Application Research of Robot Vision Target Positioning Based on Static Camera Calibration
Authors: Yin Jiang Yan
Published: June 2013

Target precise positioning by vision system is one of key techniques in robot vision system. In target positioning and selection with robot vision technique, the camera lens distortion must be calibrated. In this paper, a calibration method based on segment slope is used to calibrate the camera and the radial lens distortion coefficient is obtained. The distortion coefficient is used in calculating target position coordinates, and the robot end-exceutor is led to position the target with the use of the coordinates. The experimental results show the effectiveness of the research work. Keywords:robot vision;camera calibration;radial distortion;target positioning
A Sequential Structure from Motion Algorithm for Static Scenes Based on VR-Simulation
Authors: Wang Hao Peng , Li Xiao Jing , Pan Tong , Zhao Kai
Published: June 2013

The paper presented a conventional sequential Structure from Motion method, introduced the algebraic concepts and the core techniques used effectively. It is especially essential to comprehend the static scene based sequential of Structure from Motion is extended to a simultaneous segmentation and reconstruction scheme for dynamic scenes. The first outcome is the multiple view geometry, the second is the feature tracking and geometry initializing, and the last is self-calibration.
Extraction Method of the Contrast Feature of Ship Wake Images
Authors: Chen Ming Rong , Chi Wei , Jin Lian Gan
Published: June 2013

Since how to evaluate the ship wake images quality quantitatively and effectively, and achieve the purpose of the extraction of ship wakes optical signal characteristics rapidly, is an important base task for the ship optics-wakes elimination technology now. The method about quality evaluation of ship wake images is studied in this paper based on the contrast model. According to the characteristics of the obvious contrast between wake area and seawater background area in ship wake images, this paper uses the contrast parameter as the index of wake image quality evaluation, and also as the characterization of the strength of ship wakes optical signal characteristic. An experiment about the extraction of contrast feature and its results show that the contrast parameters can not only reflect the subjective visual perception of the human eye on the wake images actual quality, but also better reflect the application essence of the wake image processing. And the contrast parameters can describe the intensitys changing rules of ship wakes optical signal characteristics reliably and quantitatively.
Local Piecewise-Linearity Prediction Method of Chaotic Time Series
Authors: Liu Juan , Bai Xue Wei , Chi Dao Cai
Published: June 2013

A Local Piecewise-Linearity Prediction method is presented, Based on the advantages and limitations of local prediction of chaotic time series. Taking time series of rainfall as example for prediction the rainfall of one city in Liaoning province, which includes the application of the largest Lyapunov exponent, Local-region method and Local Piecewise-Linearity method. The method proposed is proved practical in comparison with the observed data.
Applications of Reservoir Sensitivity Prediction Based on Quantum Neural Networks
Authors: Zhang Wei , Wang Jiao , Xie Jian Bo , Teng Fei
Published: June 2013

The problem of diagnosing and forecasting reservoir sensitivity damage timely and accurately is always an important field of the reservoir protection research, this paper based on collecting data from core analysis .the main factors affecting reservoir sensitivity are obtained with single variable regression method, established a model of reservoir sensitivity prediction by applying an approach based on multi-level transfer function quantum neural networks. It effectively improved networks convergence and prediction accuracy. The analysis indicates that the model needs fewer parameters, has wider applicability and reliable results (the coincidence rate attains over 91%).and quantitatively reflect reservoir potential sensitivity, thus it can provide reliable basis to reservoir protection.
An Intelligent Algorithm Method of Element Layout Priority Sequence on Consoles Human Machine Interface
Authors: Yan Sheng Yuan , Chen Yu , Chen Wen Long
Published: June 2013

To objectively determine layout priority sequence of element in human machine interface (HMI), and avoid the result difference induced in applying empirical method by different persons and keeping traceability of layout process, intelligent algorithm based on layout priority sequence for HMI was presented in this paper. With importance, operating frequency, operating sequence and reliability in ergonomics principles taken as parameters, the objective function model of layout priority sequence was made up based on ant colony algorithm. It was certificated in the main control room of a nuclear power plant, which layout priority sequence was acquired using the established objective function model. The experiment show that layout priority sequence deduced through the algorithm is a unique one. Its process is traceable, and it advantages than current methods.
Energy Transfer of PVK/ SiO2 Nanometer Composite Films
Authors: Cui Nan , Han Xue Ting , Chen Xuan Lin , Pan Kai , An Li Min
Published: June 2013

Poly (9-vinylcarbazole) (PVK) is a typical hole-transporting polymer and is often used as a host in electroluminescence devices. In this paper, Forster energy transfer from organic molecules (PVK) to inorganic nanoparticles (SiO2) was discussed. SiO2 nanoparticles, which are confirmed to be 60nm using transmission electron microscope (TEM), have been synthesized through the sol-gel method. The structure scheme of poly (9-vinylcarbazole) (PVK) molecule is shown firstly. The emission of luminescence is the result from π*-π transition of π electrons. Photoluminescence (PL) spectra of the PVK/ SiO2 composite film on Si substrates were employed to study the interface effect. In the PL spectra of PVK molecules, three obvious peaks (417, 458, 495nm) can be seen. The emission of 417nm comes from free exciton. The emission of 458nm comes from bound exciton. And the emission around 495nm is correlated to surface defect states. The intensity of short-wavelength emission (about 400nm) is higher than that of visible luminescence (about 495nm). Two luminescence peaks can be observed in the PL spectra of 60nm SiO2 nanoparticles. In contrast to the PL spectra of PVK molecules, the luminescence intensity about 495nm is higher than that about 400nm in SiO2 nanoparticles PL spectra. Furthermore, UV-Vis absorption spectroscopy of 60nm SiO2 nanoparticles was measured. The spectrum indicates that the scale of absorption is wide enough from 200nm to 500nm. The ratio of PVK to SiO2 in the composite was increased orderly in weight. In the PL spectra of different concentration composite films, we found that Forster energy transfer occurred between PVK and SiO2 nanoparticles. Overlap is observed between the UV-Vis absorption spectrum of the SiO2 nanoparticles and the emission spectrum of PVK molecules. This overlap is the necessary condition of Forster energy transfer. Further investigation indicates that 40 % ( the content of PVK in composite films) is regarded as an optimized content for Forster energy transfer from PVK molecules to SiO2 nanoparticles. The reason maybe is the surfaces of SiO2 nanoparticles are modified successfully and the disperse of SiO2 nanoparticles is unified in this concent ration.
Semi-Orthogonal Parseval Wavelets Frames on Local Fields and Applications in Manufacturing Science
Authors: Wang Shi Heng
Published: June 2013

Manufacturing science focuses on understanding problems from the perspective of the stakeholders involved and then applying manufacturing science as needed. We investigate semi-orthogonal frame wavelets and Parseval frame wavelets in with a dilation factor. We show that every affine subspace is the orthogonal direct sum of at most three purely non-reducing subspaces. This result is obtained through considering the basicquestion as to when the orthogonal complement of an afffine subspace in another one is still affine subspace.The definition of multiple pseudofames for subspaces with integer translation is proposed. The notion of a generalized multiresolution structure of is also introduced. The construction of a generalized multireso-lution structure of Paley-Wiener subspaces of is investigated.
Large Subassembly Relocation for Finish Machining of Wing-Fuselage Joints in Digital Final Assembly of Aircraft
Authors: Liu Chu Hui
Published: June 2013

During digital final assembly of some types of aircraft, the posture of fuselage or wing must be revised in the case that real cutting allowances of some wing-fuselage joint holes are insufficient for finish machining. A constrained optimization modal is proposed to gain the optimum objective posture, which will ensure that each wing-fuselage joint has enough cutting allowance and meet all other technological requirements on the posture of fuselage or wing too.
Assembly Sequence Planning Based on Connector Structure and Ant Colony Algorithm
Authors: Su Ying Ying , Dong Hai , Liang Di
Published: June 2013

For the purpose of effectively reducing the degree of complexity and improving the efficiency, the method of assembly sequence planning based on connector structure and ant algorithm was proposed. The concept of connector structure was presented, which was regarded as basic assembly unit to cover features of assembly parts. Then, a model of assembly sequence planning was built, which represented the precedence constraint relationship among connector structures. Additionally, the combination of the connector structure concept and characteristics of ant colony algorithm was developed for generating optimal assembly sequences under the guidance of precedence relations in the model. Finally, an example was studied to illustrate the effectiveness of the strategy.
More Efficient Methods among Commonly Used Robust Estimation Methods for Robust Unitary Linear Regression
Authors: Zhang Juan Juan , Ge Yong Hui
Published: June 2013

Robust regression, based on the robust estimation, can effectively eliminate or weaken the influences of outliers. However, different robust methods have different abilities to eliminate or weaken the influences of outliers. The current paper employs simulation experiments, taking unitary linear regressions with different numbers of observations, different numbers of gross errors and different values of gross errors as examples, to compare the robustness of 13 commonly used robust estimation methods by the average values of relative gains. The results indicate that the L1 and GermanMcClure methods are relatively more efficient for unitary linear regression. They can more efficiently eliminate or weaken the influences of gross errors on regression coefficient valuation than other robust estimation methods.
Using Adaptive Scheme to Monitoring Dependent Steps with Attributes Data
Authors: Yang Chung Ming , Yang Su Fen , Yeh Jing Tenh
Published: June 2013

The article considers the dependent process steps with attributes data. We explore the monitoring of the dependent process steps with attributes data by using two designed variable sample size and sampling interval cause selecting control charts, and then evaluate their performance by the adjusted average time to signal. Numerical example and simulation study illustrated that the proposed VSSI charts have better performance than the fixed parameters control charts. The proposed VSSI cause selecting charts are thus recommended.
A GPU/CPU Programming Model for CFD Simulation
Authors: Wei Cao , Wang Zheng Hua , Xu Chuan Fu
Published: June 2013

In recent years, the highly parallel graphics processing unit (GPU) is rapidly gaining maturity as a powerful engine for high performance computer. More and more researchers try to port the computational fluid dynamics (CFD) simulations into heterogeneous computers. However, most researchers focus on exploring the computational capability of GPU, while ignore the computational capability of CPU. In order to utilize the computational capability of CPU and GPU, we propose a hybrid CUDA/OpenMP parallel programming model. And we proposed an adaptive load balancing scheme to distribute the workload among CPUs and GPUs. With this programming model, we implement a high-order CFD program on “Tianhe-1A” supercomputer system. The performance results validate the workload distribution scheme.
JPEG DCT Compressiom
Authors: Jia Hong Li , Liu Qiang
Published: June 2013

With the rapid spread of image processing applications and the further development of multimedia technologies, compression standards become more and more important. This paper intends to explain JPEG (Joint Photographic Experts Group) compression, which is currently a worldwide standard for digital image compression, is based on the discrete cosine transform (DCT). Based on the research, the paper describes theory and algorithms of the JPEG DCT compression and implements a baseline JPEG codec (encoder/decoder) with MATLAB.
A Model of Replication Creation in Distributed Networks
Authors: Li Jing
Published: June 2013

Data Grid provides geographically distributed data resources. However, ensuring efficient and fast access to such huge and widely distributed resources is hindered by the high latencies of the Internet. Replication is adopted to address these problems. Aimed to replica creation, a model to decide replica creation opportune moment is introduced, which is based on queuing theory. Through statistical record of the arrival rate of uses, service period, and replicas already created, calculating length of queue, waiting duration time, busy period, service strength and so on, a reasonable creation opportune moment of replica can be obtained.
Research on Method of Limit to Model Behavior Region in Virtual Environment
Authors: Pan Tong , Li Xiao Jing , Wang Hao Peng , Chen Bin Ru
Published: June 2013

Security and stability are important for interactive behavior of virtual object in the virtual environment. To achieving a effective method for region limit to all virtual models is the key to secure and stable virtual environment. The paper analyzed the principle and approach of limit to model behavior region, presented a method based on VRML with validations. The method is effective for safe, stable human-computer interaction in virtual environment, and served for VR-based products design, process approach, and accurate evaluation.
Preparation of La0.75Sr0.25Cr0.5Mn0.5O3-δ Nanometer Powders by Sol-Gel Method and Research about its Electrochemical Performance
Authors: Wu Yin Lin , Wang Qing Hui , Wang Ling , Zhao Hai Yan
Published: June 2013

The La0.75Sr0.25Cr0.5Mn0.5O3-δnanometer powders were prepared by citric acid sol-gel method.The samples were characterized by DTA, FT-IR, XRD, TEM techniques. The preparation process, morphology of synthesized powders, the best heat-treatment temperature and the electrochemical performance had been studied. The results show that the spherical nanometer powders can be obtained and the best heat-treatment temperature is 800°C. The particle size is about 30nm and Ea is 0.071 eV.
Research on Simulation of Syncretizing Remote Sensing Information Vegetation Scene
Authors: Li Xiao Jing , Pan Tong , Chen Bin Ru , Wang Hao Peng
Published: June 2013

In the process of plants simulation syncretzing remote sensing information, ground and scene are all the key parts. Scenes intervene the process of plants growth directly, so that is a most important for plants simulation based on remote sensing information, radiometer and sensors. The paper according as experiment data, presents the methods of modeling ground scene for plants, makes the simulation high creditable and realistic, and serves for cropper-yield monitoring and assessing.
Integral Modeling for Entity of Trees Based on 2.5D
Authors: Li Tie Nan , Yu Shun , Yang Feng
Published: June 2013

In modern society, tree modeling has much academic significance and worth of society, after paper introducing advantages and shortcomings on virtual modeling simply, emphasizes on different puzzle to be faced when 2.5D describing on structuring samples of trees. At the same time, theme also discusses technology during the modeling process roundly, for example, samples managed, samples combined, knowledge utilized and so on.
Design and Implementation of a On-Orbit Service Oriented Dynamic Simulation Platform
Authors: Yin Hang , Gao Yong Ming , Wang Chao , Zhang Xue Bo
Published: June 2013

The high cost of space missions, long cycle and high risk, simulation technology has been an important way in the research and engineering applications of space technology. A cost-effective space missions in rail services through the Service spacecraft on-orbit servicing, in-orbit replacement to extend the service life of the target spacecraft in the rail supply, to enhance the effectiveness of the spacecraft. In rail service technology involving orbital dynamics, collision dynamics, multibody dynamics, the dynamics knowledge integration application. Therefore requires a comprehensive and efficient simulation platform to support research to expand the application of on-orbit service. In this paper, the open source dynamics engine ODE Open Inventor graphics library and Maltlab numerical simulation software to build a multi-level, in-orbit service simulation platform, play to the advantage of three software can quickly carry out the front end of the rail service, power school simulation, operation, control and results processing.
Technique Equipment Parameters Design of Titanium & Titanium Alloys Oxidizing for Large Area and Batch-Type Production
Authors: Yu Hai Ning
Published: June 2013

Analyses the principal of titanium & titanium alloys oxidizing and the relation of thickness and color of the oxidizing film and the oxidizing power, The reasons are pointed out, which the low reapparition-rate and the difficult control of color of oxidizing film lie in titanium & titanium alloys anodizing with common power. The technique and equipment parameters are acquired by anodizing experiments, which ensure the identity of oxidizing film color of titanium & titanium alloys oxidizing for batch-type production, where the voltage is severed as a control object, the adjustable stable voltage and the controlling pattern of self-shutting are used, that enable the terminal voltage and the pattern of voltage inputting to be accurately controlled, and ensure the identity of oxidizing film color for batch-type production. These are utilitarian measures in the application of titanium & titanium alloys oxidizing for batch-type production.
Study on the Economical Distribution of Load Based on the Lagrangian Multipliers
Authors: Wan Xiao Hang , Wang Jian Gang , Dong Zhao Wei , Zhang Shi Jun
Published: June 2013

The main objective of this study is to investigate the economical distribution of generator load based on the Lagrangian Multipliers. The reasonable economical distribution of generator load based on the lagrangian multipliers model is established in this paper, which uses the appropriate mathematics optimized algorithms whose computation precision is higher and convergence characteristics is good too. This algorithm improves the efficiency of computation, which is very significant in engineering
Ferroelectric and Ferromagnetic Properties and Magnetoelectric Coupling Effect of the Ba0.8Sr0.2TiO3/CoFe2O4 Heterostructure Film by Radio-Frequency Magnetron Sputtering
Authors: Wang Ye An , Wang Yun Bo , Rao Wei , Gao Jun Xiong , Zhou Wen Li , Yu Jun
Published: June 2013

The Ba0.8Sr0.2TiO3/CoFe2O4 layered heterostructure film was grown on Pt/TiO2/SiO2/Si substrate by radio frequency-magnetron sputtering. X-ray diffraction shows that the heterostructure film is composed of perovskite Ba0.8Sr0.2TiO3 phase and spinel CoFe2O4 phase. The microstructures of the heterostructure film were observed by field-emission scanning electron microscope (FESEM), showing good surface morphology and clear interfaces among the Ba0.8Sr0.2TiO3 film and CoFe2O4 film and substrate. The heterostructure film simultaneously diplays distinct ferroelectricity and ferromagnetism. Moreover, an obvious direct magnetoelectric coupling effect is observed in the heterostructure film with a maximum magnetoelectric voltage coefficient of 9.4 mV/cm Oe.
Study of Connecting Rod Cracking Production Line Layout Planning System Based on VB6.0
Authors: Gao He Peng , Wang Hongjun , Zhang Zhan Wu , Yang Qing Dong
Published: June 2013

The current situation of the connecting rod cracking technology development is introduced. The connecting rod cracking production line was established on the basis of the actual connecting rod cracking production data. The equipments were selected by the AHP, and production layout is realized by the SLP. The three-dimensional modeling, logistics analysis and WITNESS simulation analysis are also realized in the paper. Virtualization production is formed on the computer platform. At last, the optimal scheme is achieved. With language of VB6.0, computer aided layout system was developed. Its framework and function were also introduced briefly. The analysis report is obtained to provide data support for the optimization and help enterprises save the costs, improve the production capacity and obtain good economic profit.
Furnace Data Management System Based on WinCC User Archive
Authors: Shao Dan , Liu Hai Tao , Chen Hong Yu
Published: June 2013

In order to solve the problems of failing to record, query, count and manage the production process data caused by the domestic industrial furnace industry configuration interface only focusing on the real-time data and status monitoring and control of the input parameters, this paper introduces an industrial furnace data management system based on WinCC user archive, and describes the systems principle, process and characteristics applications. This paper makes use of an industrial furnace data management system based on WinCC user archive to record the production process data, and query, count, manage and obtain the temperature curve, and help to improve production efficiency and production quality control, which have some promotional value.
Small Fluctuations Research of Internet AS-Level Topology Based on PFP Model
Authors: Yang Bo , Zhao Hai , Zhang Jun , Jia Si Yuan , Liu Yi Wen , Liu Wen
Published: June 2013

In order to highlight small fluctuation characteristics of the mutation evolution, this paper by adding periodic function, and use the actual data fitting Internet with Ark to obtain the new attachment to improve PFP model priority set point formula. Simulation results show that the model not only keeps power law, but also better reflects small fluctuation characteristics of the Internet AS-level topology. The dynamic modeling algorithm can reconfigure the evolution of the Internet.
Supervisory Information System Application in Power Plant
Authors: Luo Xiao Ling , Liang Qi Dui
Published: June 2013

With the advent of new technologies the development of SIS (supervisory information system) is expanding by leaps and bounds, and SIS function discussion gradually in-depth with a batch of large power plants are put into operation. The establishment of SIS can provide a lot of advantages in terms of control, data viewing and management. Along with the advantages, the correct selection of the proper scheme from wide variety of SIS designs and standards represents an important issue. For the reason the function of the SIS, network architecture and the design are discussed, according to application examples and some related SIS design standards and principles. In addition, the paper puts forwards SIS function development trend and gives a brief description of database according to the cases from power plants. The goal of the paper is to make power system flexible, reliable and minimize management cost. The paper provides some references for research and engineering application of a power plant SIS construction in future.
On an Improved SPRINT Data Stream Online Classification Algorithm
Authors: Zhou Hong , Fu Chun Yan , Xue Jia Mei , Zhi Yuan , Liu Jing Shun
Published: June 2013

Aiming at the characteristics of data stream, the paper presents an incremental decision tree algorithm based on binary-attribute tree on the basis of SPRINT algorithm. The attribute set of this improved algorithm adopts the maximum entropy attribute classification and dynamic storage method of Bayesian method. By using this improved algorithm, static organization form of candidate attributes set for traditional SPRINT algorithm has been changed and it is much more suitable for concept drift and reduces the time complexity for new sampling insertion and best division node selection as well as saves storage space and increases classification efficiency.
Availability Allocation for Distributed Clusters of the Cloud Infrastructure
Authors: Ding Jie , Lin Peng , Zhu Li Peng
Published: June 2013

The cloud environment capitalizes on the built-in redundancy of the large number of servers that make them up by enabling high levels of availability and reliability for applications. In this paper, we address the availability problem of the heterogeneous distributed clusters in the cloud and propose an availability allocation model with the goal of maximizing the system reliability. The allocation model involves three kinds of services according to the coupling classification. And the availability analysis scheme is designed for each coupling type. Besides, the prior knowledge of all the server availability value is imported to simplify the service disposal and achieve an optimal solution in a short time. The experiments show that this algorithm finds a good initial solution for availability allocation problem.
Complementary QoS Strategy Research and Application in Large-Scale Switched Networks
Authors: Jiang Jian Feng , Jiang Jian Feng , Zhang Xian , Sun Jin Xia
Published: June 2013

Large-scale switched networks based on hierarchical architecture put forward higher requirements for the quality of service. This paper analyzes the advantages, disadvantages and the application environment of the traditional QoS architecture based on business according to the second layer and the third layer of the OSI reference model. Then a complementary strategy model integrating Differentiated service model with Integrated service model is designed to enhance the QoS of a large-scale switched network. Simulation results prove that the model can improve the networks QoS in many aspects such as transmission delay, packet loss rate, delay jitter and network throughput.
Effect of Temperature and Applied Bias on Deflection of PZT Actuators with Different Metal Slides
Authors: Zheng De Yi , Huang Fei , Luo Min , Zhu Tao
Published: June 2013

Lead zirconate titanate (PZT) ceramics are widely applied in manufacturing transducers, sensors etc [1-3]. In all of these applications, the PZT ceramic plates are bonded with a metal substrate making out to an actuator for generating a deflection. Large amount of research work has been done on investigating electrical properties [4-6] of the PZT ceramic plates, the influence of the environmental factors on their performance and mechanisms of electrical degradation phenomenon [7-9]. In this paper, two kinds of metal substrates (Kovar alloy and Titanium) are applied for bonding with the PZT ceramic plates. Experimental results show that, the materials of metal substrates are also severely influence the output deflections of the PZT actuators. In general, for both the two types of samples, they are with a better deflection at a higher working temperature, but the PZT actuator samples with Kovar alloy substrate is with better net deflection.
User Classification Prediction Research Based on Clustering SVM
Authors: Wang Jian , Zhang Yuan Yuan , Guo Shu Hang
Published: June 2013

Users interest discovery can be belonged to category of classification knowledge discovery, which can divide user information need into two groups as interested group and uninterested group by classification forecast analysis of user information need which reflects historical visiting information behavior of user. After analysis the use of a several methods of user classification prediction, this paper presents a modified model combining clustering algorithm was presented for improving the forecasting accuracy of SVM. The efficiency of the proposed method was tested by the user access informations log data. The results have shown that the higher accuracy is expressed in this proposed model, and it is applicable to practice.
The Most Preferred Route of the Car Navigation System: A Systems Engineering Approach
Authors: Choe Kyung Il
Published: June 2013

The typical route planning of on-board car navigation systems (CNS) attempts to find the shortest route without considering users preferences and driving contexts. However it is more effective for a user to find the most preferred route rather than the shortest one. We propose a systems engineering approach for finding the most preferred route by considering and tracking the requirements of CNS route planning from the business point of view. Our approach consists of 4 baselines: customer baseline, system baseline component baseline, and design baseline. The architecture of a route planning engine is suggested according to the baselines.
The Interface Design of the Voice System Based on the TLV320AIC23 and CPLD
Authors: Zhao Li Li , Di Zhi Gang , Jia Chun Rong
Published: June 2013

With the development of new technology, there is a lot of break-through in the systematic field of the language learning in recent several years. Digitized voice system is the representative of the new products. The function, interrelated registers and audio sampling rates of the TLV320AIC23 are introduced. The interface design, which is used CPLD to replace DSP, is put forward by analyzing. The design realizes the transition of A/D、D/A in the device digital voice system. The approach makes the system more compacted, more steadied and cheaper. And those characteristics give our design more competitive in the market. Furthermore, the most important is that we own the intellectual property of the design.
Design of Data Acquisition System Based on PXI Bus and VC++2008
Authors: Ma Zhi Gang , Liu Wen Yi
Published: June 2013

In order to satisfy the multi-channel space testing requirement, multi-channel (temperature, liquid level, voltage, etc) testing system is designed based on PXI Bus. VC++2008 is adopted for acquisition and control programming, and the testing data can be real-time displayed in the interface. This system has already been successfully implemented in a testing task.
FRFT Based Method to Estimate DOA for Wideband Signal
Authors: Yang Wei , Shi Yao Wu
Published: June 2013

This paper presents a new direction-of-arrival (DOA) estimation for wideband sources, using fractional Fourier transform with fitting angle (F3A). Unlike other coherent wideband methods, the new method does not require any preprocessing for initial values and decomposing into narrowband components. This new technique estimates DOA by rotating the time frequency plate with the fitting angle to fit the time frequency distribution approximately. The algorithm can be applied to arbitrary shaped one dimensional or two dimensional arrays. The signal frequency can be higher than the frequencies in many wideband algorithms. The performance of this wideband technique is compared with that of the new method through simulations. The simulations show that this new technique performs better than others, while this algorithm does not apparently vary with signal-to-noise ratio (SNR).
Reliability Analysis and Design of Facility Systems Based on Edge Failures: A Review
Authors: Wei Zong Tian
Published: June 2013

Reliability of facility systems is to a large degree affected by the edge (facility) failures. In this paper, we review the models and methods of the analysis and the design of reliable facility systems based on the classical location problems subject to edge failures. It shows that the reliability of facility systems will increase when considering the edge failures in locating decision.
Design of Nut Machine Vision Inspection and Screening Systems Based on PC
Authors: Yu Zhong An , Wang Chun Li , Guo Pei Yu , Kan Kong
Published: June 2013

This system use PC as the core of image analysis and processing, with the single chip processor as the control core execution, combining with machine vision image processing technology, using advanced image processing algorithms, to achieve separation of the nut, and through experiments to test the correctness of the algorithm. The system has the advantage of a fast processing speed and high reliability. It not only save the manpower cost, but also improve the efficiency of the nut sorting.
Design of Cemented Carbide Face Automation Grinder Based on Constant Force Grinding and Online Measurement Technology
Authors: Zhang Tao Chuan
Published: June 2013

A set of face automation grinder is designed aimed at the cemented carbide characteristics of high hardness, high wear resistance, and good dimensional stability,and automatic grinding process is divided into three stages of coarse grinding,accurate grinding and light grinding; Constant force feed system is designed using servo drive mechanism and pneumatic mechanism; Using on-line measurement and grinding support institutions, the grinding process real-time monitoring and real-time processing size measurement are realized; With PLC as the central control unit automatic control system is designed for the grinding force control, measurement data processing and feedback show and grinding process control; The machine design idea is provided the references for other grinding machine automation design.
The Implementation of Permanent Magnet Synchronous Motor Direct Torque Control
Authors: Zhang Jun Li , Li Yu Ren , Fu Long Fei , Gao Fan
Published: June 2013

In order to deeply understand the characteristics of the permanent magnet synchronous motor direct torque control method, its mathematical models were established in the two-phase stationary coordinate system, the two-phase synchronous rotating coordinate system, and x-y stator synchronous rotating coordinate system. The implementation process of direct torque control method in varied stator winding connection was analyzed in detail. In order to improve the speed and torque performance of the permanent magnet synchronous motor, the direct torque control block diagram and the space voltage vector selection table were given. Finally, the summary and outlook of reducing torque ripple in the permanent magnet synchronous motor direct torque control methods.
Research on Model Reference Robust Control for Multivariable Linear System
Authors: Jiang Xu , Hua Jing Yu , Zhang Qin Ling
Published: June 2013

This paper studies the output-feedback model reference robust control for MIMOlinear systems with generalized relative degree one. A new robust controlscheme is proposed within the framework of model reference control. Under theassumption that the high-frequency gain matrix of the plant can be transformedto a glass of main diagonal dominant matrix via full rank transformation, it isshown that all signals of the closed-loop system are globally uniformly boundedand meanwhile, the tracking errors converge to a residual set that can be madearbitrarily small by properly choosing some design parameters. Simulationresults are presented to illustrate the effectiveness of the proposed scheme.
Robust Adaptive NN Design for Course-Tracking Control of Ship with Input Saturation
Authors: Sun Hong Ying , Yu Feng Wei
Published: June 2013

In this paper, a novel robust adaptive neural control scheme is proposed for a class of ship course autopilot with input saturation.RBF neural networks (NNs) are used to tackle unknown nonlinear functions,then the robust adaptive NN tracking controller is constructed by combining dynamic surface control (DSC) technique and the minimal-learning-parameters (MLP) algorithm. The stability analysis subject to the effect of input saturation constrains is conducted employing an auxiliary design system. With only one learning parameter and reduced computation load, the proposed algorithm can avoid both problem of “explosion of complexity” in the conventional backstepping method and singularity problem. In addition, the boundedness stability of the closed-loop system is guaranteed and tracking error can be made arbitrary small. The effectiveness of the presented autopilot has been demonstrated in the simulation.
Study of Variable Structure Control Based on SVM
Authors: Song Qiao Zhen , Meng Xiu Yun
Published: June 2013

Set guided bomb as the study object, we study a new variable structure control (VSC) method based on support vector machines (SVM). The SVM is applied to identify the model of the control system using the principle of Support vector machines regression (SVMR). So, the input of the control system can be obtained from the training directly. The VSC then designed based on this. Simulation results of guidance bomb control system show the effectiveness and feasibility of the VSC based on SVM.
Spray Experiment Control System Design of Exhaust Gas Desulfurization Based on PLC
Authors: Dong Zhi Feng , Li Bin , Yang Hui Jia , Yang Xiong , Yao Rong
Published: June 2013

A spray control system with PLC was designed to realize the requirement of exhaust gas desulfurization experiment control system in ship. The relevant parameters were changed in manual control, according to the experimental requirements. The flow rate of the spray liquid along with the changing of the exhaust gas amount was changed in the automatic control system. The multi-level control and cascade control was used to adopt the different equipments, in order to obtain the anti-reference function of system. The PLC module was chosen and programs were designed. The relevant parameters were determined through computer simulation. The results showed that computer simulation met the requirement of experiment.
Design of Real Time Monitoring System in Urban Pipeline Networks Based on Wireless Communication
Authors: Gao Xiang Ming , Chen Yong Chao
Published: June 2013

The urban pipeline wireless monitoring system is presented based on WSN technology and GPRS so as to solve the existing problem in the operation of urban pipeline networks. Hardware and software design of wireless sensor node and coordinator is given. GPRS module serves as gateway interface between WSN and internet. The collected field data which consist of pressure and flow rate of water, natural gas and heating water is finally transmitted to the control center through internet. The main interface of control center is developed with configuration software which is famous for its direct viewing and easy-to-use. The experimental results indicate that the control center can get real-time field data of pressure and flow rate at any time, sensor nodes collects data accurately, data is transmitted reliably via wireless sensor networks. It has wide field of application with good prospects.
DR Model Based Network Control System Design and Analysis with Time Delay and Data Packet Dropout
Authors: Tang Jia
Published: June 2013

Network control systems have been one of the main research focuses in academia as well as in industry for many decades and have become a multidisciplinary area. With these growing research trends, it is important to consolidate the latest knowledge and information to keep up with the research needs. In this paper, we take network time delay and data package dropout into consideration, and propose a DR model based network control system. After theoretical analysis to our system, we do some simulation experiments to validate the efficiency of the proposed system.
Research and Application of Intelligent Control in Ceramic Kiln Temperature
Authors: Dai Lu Ping , Liu Hai Ying , Chen Xing Liang
Published: June 2013

In accordance with the technical features of large capacity, non-linear and dead time temperature resistance kiln system.a fuzzy predicted coordinated control algorithm is stated .Enhance tracking and anti-inference capabilities of The algorithm. Simulation results indicate that this method is better adaptive to the alteration and improverer the static precise that PID control.
Research of Approach for Fuel Transfer Integrative Control of Offshore Oil Platform Power System
Authors: Qiao Ya Jun , Wang Yong Qiang , Xu Zeng Pu
Published: June 2013

The gas turbine generators on the offshore oil production platforms commonly obtain the steady normal power supply by transferring the fuel. Previously, the control mode of fuel gas system had obvious disadvantage, this paper took the power plant system of the LD 10-1 offshore oil production platform as an example, to do the transient-state and steady-state analysis on the gas turbine fuel transfer, and to establish the effective control processes. This method has been proved to be very practical, and can greatly improve the stability of the power plant system.
Application of PLC in the Control System of Fins-Former
Authors: Zhou Biao , Jiang Hai Bing
Published: June 2013

The fins are the basic components of the plate-fin heat exchanger. And fins-former is the special device to produce heat-exchanger. In this paper, some fins-former is used as research subjects, and Mitsubishis FX2N Series 32MT high-performance small programmable controller (PLC) is chosen as the main control unit to design the control system of its nesting cutting device. Then the control program is prepared. AC servo is used in the motion control system and finally the automation and control of the nesting cutting process is realized. It provides a useful method and reference for the automation control and transform of the fins-former.
The Application of Form Symbols in Furniture Design
Authors: Lv Zhong Yi
Published: June 2013

The furniture form design was studied with semiotics method. Combining with design examples, the content of form symbol in furniture was the first key of the whole study. Then, the discussion about application of form symbols in furniture design was carried on to make sure that furniture design can better meet the consumers needs of using function, symbolic value, personalization and aesthetic demand. It provided guidance for the development of furniture design.
Case Study on Improving Energy Efficiency of Garment Materials by Women's Wear Style Transformation Design
Authors: Wang Wei Zhen , Zheng Cheng Gang , Sun Lin , Wang Shi , Wang Man Qian , Wang Wan Zhuo
Published: June 2013

In view of high energy consumption situation in the apparel industry in the background of green economy, the author explores the multi-functional structural design method for single garment and the diversified wearing forms of single product according to the study on clothing style change, so as to satisfy the individualized and special needs of consumers. This not only improves the energy efficiency of clothing materials, but also optimizes life cycle of products, and accordingly promotes the environment-friendly clothing philosophy and provides new solution to the contradiction between mass production and individualized consumption of garments.
Theoretical Study on Ni2XIn (X=Mn, Fe and Co) Magnetic Shape Memory Alloys by Ab Initio Calculations
Authors: Bai Jing , Gu Jiang Long , Liu Wen Qi , Wang Xin , Wang Yan Ming , Zhao Xiang
Published: June 2013

The crystallographic, magnetic and electronic structures of the magnetic shape memory alloys Ni2XIn (X=Mn, Fe and Co) are systematically investigated by means of the ab initio calculations within the framework of density functional theory. The equilibrium lattice parameters and the bulk modulus of the austenitic phase in Ni2XIn are systematically calculated. The formation energy of the L21 phase of the Ni2XIn is estimated, and displays a destabilization tendency if Mn atom is substituted by Fe or Co. Furthermore, the magnetic properties of the Ni2XIn have been investigated, and the essence of the variation in the magnetic properties with the X atomic number has been illustrated from the view of the electronic density of states.
Study on Industrial Design Method for Product Life Cycle
Authors: Hu Jun , Jiang Du
Published: June 2013

Modern industrial design has been extended to the whole product life cycle of production, manufacture, sale and recycling from traditional appearance design and product performance. Facing today’s intense and diversification market competition, product design must be taken the whole product life cycle routes based on design, quality, economic and environmental protection. Starting from the design, designer should concern about the product life cycle of the product in each stage of the design process, and use design principles and methods for product design reasonable. With quality competitive as the basis for product, with economic environmental competition as improve quality of power, industrial design can provide high quality product and create a perfect user experience, in order to reduce pollution and satisfied our clients’ needs. In this paper, industrial design processes and methods for product life cycle are discussed and analyzed systematic, so as to product designers of the designer to provide methodology.