bluuebunny/crossref_metadata_2025 huggingface dataset:
Research of the Distributed Focused Crawler for an Automotive News Push System
Authors: Zhang Hai Bo , Dou Ru Peng , Wang Wen Bin
Published: July 2013

With the development of automobile industry, more and more people need automotive information. Meanwhile, there’s a great deal of network information which makes people gather information hard. To make people acquire the automotive information more efficiently, an Automotive News Push System is desperately needed. A distributed focused crawler is proposed for the system to assure that the information is accurate and timely. In this paper, distributed system framework and webpage classification are analyzed. Experimental results show that the frameworkare effective, the accuracy and efficiency of crawling are both improved.
Using J2EE for Medical Image Transmission in a PACS System
Authors: Wang Shao Qing , Yu Dong Yue , Cheng Jin Yong , Wang Peng Cheng , Zhang Wei Yu
Published: July 2013

This paper developed a distributional PACS system conform to the J2EE specification, implemented the DICOM images receiving, storage and archiving on the basis of the DICOM standard. Extract meta information and stored in the database. Visit from different clients of different platforms to look up patient and some management. Web Service provides services functions. The System is a true cross-platform, provides a good background support for remote diagnosis system and the borderless PACS system. Compared to the traditional PACS, the PACS based on J2EE specification is easier to install and manage and more security and flexible, overcome the traditional faults of pure Client/Server model or Browser/Server architecture. Simplifies enterprise application development, management and deploy as a distributional and portable PACS.
A Research of GPS Height Fitting in Mountainous Terrain by CPSO Optimization FLS-SVM
Authors: Gan Yong , Liu Xin Xin , Zheng Yuan Pan
Published: July 2013

For the problem of data limited in the mountainous area, a method of FLS-SVM (Fuzzy Least Square Vector Machine) that supporting small sample data and having high noise ability was put forward. The CPSO(chaos particle swarm optimization algorithm) is adopted to optimize the parameters of least squares support vector machine algorithm, and to avoid the uncertainty of artificial parameter selection. Meanwhile, considering the impact of terrain, the terrain correction is introduced to the support vector machine model. The experimental results show that the model can get higher precision fitting effect compared with traditional fitting method such as PSO-LSSVM and GA-LSSVM, and suitable for the SRTM application of getting normal height.
A Review of Information Flow Control in Composite Services
Authors: Yu Bo , Yang Lin , Chen Shu Hui , Ma Lin Ru
Published: July 2013

Service computing facilitates resource sharing and business collaboration for cross-domain partiers by universal service description and discovery. The multi-domain nature of service oriented environments introduces challenging security issues, especially with regard to information flow control which controls the flow of privacy resources. This paper presents a state-of-the-art review of information flow control technology in service oriented environments. We review the research background and classifications of information flow control, and discuss architecture and existing technologies of both centralized and distributed information flow approach. We outline the features, advantages and limitations of existing information flow control approaches. The analysis results show that the research of collaboration and dynamic nature are important, but insufficient to secure information flow.
Design on the Sink Node for Wireless Network
Authors: Geng Kun
Published: July 2013

With the rapid development of communication technology, embedded technology, sensor technology, and the constantly emerging of micro-sensor nodes performing perception, computation, communications. Design of sink node is reliable in monitoring environmental elements. A communicated architecture of Wireless Sensor Network is presented in this paper, and hardware design of sink node for transmission data is also discussed.
A Network Intrusion Detection System with Improved SBOM Algorithm
Authors: Zhou Li Hua
Published: July 2013

The efficiency of pattern matching algorithm used in detection engine decides the performance of intrusion detection system. This paper improves the data structure of SBOM Algorithm, which is well-known keyword matching algorithm, by adding or removing keywords dynamically. The results of experiments on 1999 DARPA intrusion Detection Evaluation Data Sets indicate that the implemented NIDS(Network Intrusion Detection System) is comparatively excellent for large keyword sets.
Application of Artificial Neural Network in Corporate Financial Risk Early-Warning
Authors: Zhou Hong Xiao , Xu Sai Hua
Published: July 2013

The traditional financial risk warning model are all based on probability theory and statistical analysis, but the precisions of the results are usually not satisfied in practice. This paper studies the application of artificial neural network in corporate financial risk early-warning. It designs an early warning model of financial risk based on BP neural network. And then selects financial data from 30 enterprises as samples to train and test the network. The result indicates that the risk early warning model is very effective. It can solve some problems of the traditional early warning methods such as difficult to deal with highly non-linear and lack of adaptive capacity.
Transmission Line Condition Monitoring Based on Internet of Things in Smart Grid
Authors: Chen Lei , Huang Zai Chao , Wu Peng , Liu Chuan
Published: July 2013

In order to meet the demand for real-time monitoring of transmission line state in the construction of the smart grid, this paper adopt the transmission line condition monitoring system that is based on the Internet of Things technology, PON technology and the fuzzy expert diagnostic technology; with a large number of experiments and field pilots, we get ideal results. It can get real-time the state of the transmission line and make accurate judgments, which verify the accuracy and implementability of the system; This system has many advantages, such as comprehensive collection of information, stable network, high output accuracy, simple to deploy, and so on.
Research on Optimization of Distribution Routes for Fresh Agricultural Products Based on Dijkstra Algorithm
Authors: Tan Yong , Wu Dan
Published: July 2013

According to the specialty of fresh agricultural products, a delivery model was established. The model consists of single distribution center and multiple demand points. The integrated cost which consists of transport cost and time cost was taken as the optimization objective. It is used as weight in classic Dijkstra algorithm instead of distance. We also used a case study to illustrate saving method and classic Dijkstra algorithm with integrated cost. The comparison was conducted by calculating the integrated cost of optimal routes separately. Following the comparison, we draw a conclusion that in the field of fresh agricultural products distribution, classic Dijkstra algorithm which takes integrated cost as optimization objective is superior to the saving method in which distance is the optimization objective.
The Situation, Problems and Trends of E-Commerce Logistics Management in China
Authors: Li Zhi
Published: July 2013

This paper first expounds the concepts of E-Commerce logistics management, and analyzes the situations of China's E-Commerce logistics management; then, it analyzes the popular third-party logistics and logistics integrated logistics mode and the problems existed; finally, it introduces a new logistics mode---the fourth-party logistics, and discusses the thoughts of developing the fourth party logistics management mode in China under the environment of E-Commerce.
Study on Location Selection of the Intercity Railway Passenger Station Based on Fuzzy Entropy-Based Grey Correlation Analysis
Authors: Xi Jiang Yue , Zhu Xiao Ning
Published: July 2013

This paper analyses the influence factors of the intercity railway station location selection. According to the actual situation of railway station, establish the grey correlation analysis model with the entropy method to evaluate the intercity railway station setting-up plan. Thus the deviation of evaluation results caused by the subjective factors can be avoided effectively. A numerical example and relative conclusions were given then to show that the intercity railway passenger station location problem can be solved by setting up the grey correlation analysis model which was combined with the entropy method and to provide a scientific basis for the decision-making of the intercity railway station location selection.
Compare of Two Intrinsic Fabry-Perot Interferometric Fiber Pressure Sensor Structures
Authors: Wang Ning , Li Xiao Xia
Published: July 2013

The pressure responding theoretical models are got for two intrinsic Fabry-Perot interferometric fiber pressure sensors fabricated by single mode and multimode fibers with different diameters. The pressure response curves are simulated by Matlab programs. The analysis showed that the sensitivity changing situation is different for two structures. The big size structure has a critical point of sensitivity. Higher sensitivity can be got by two structures, but the small size structure is more attractive than the big size structure.
Study of the Conjugate Height for Solar Multi-Conjugate Adaptive Optics
Authors: Zhong Xiao Chun , Wang Shu Juan , Wu Yi Qun
Published: July 2013

In a solar MCAO system, the formula of isoplanatic angle gain multiples was derived and the best conjugate height of Hefei region was thoughtfully discussed. The results show that the isoplanatic angle gain varies with the conjugate height and the seasons. The isoplanatic angle gain of the three conjugated system is much superior than that of the double conjugated system.
Calibration of Vector Hydrophones in Deep Water
Authors: Zhao An Bang , Zhou Bin , Li Jiang Qiao
Published: July 2013

To apply vector hydrophone to deep-sea detection, a calibration test of the vector hydrophone under different hydrostatic pressure was taken in the national defence underwater acoustics calibration laboratory. The effect of the relative sensitivity changes between channels on the vector hydrophones direction finding and zero-inhibition performance is explored, and the principle model for the influence of the directivity deviation on vector direction measuring is established. Meantime, the phase compensation between channels is found to be frequency-independent. The omnidirectional method is proposed to compensate the directional rotation. As a result, the influences of the hydrostatic pressure on direction finding are effectively reduced.
Research and Design of Smart Home System Based on ZigBee Technology
Authors: Xie Zheng Lan , Wan Chuan Mei , Zhang Li
Published: July 2013

Smart home system is the inevitable trend of home network in the future. In this article, it built one interior network of smart home system based on ZigBee technology, designed one Home gateway, and configured one embedded Web server Boa on the gateway to realize one interactive network inside and outside the smart home, to provide one solution forwidely adaptation and energy saving smart home system.
Design of Conversion Circuit for Intellect Vortex Flow-Meter
Authors: Piao Xing Zhe , Piao Hai Yin , Yang Song
Published: July 2013

The design principles of conversion circuit for intellect vortex flow-meter with MSP430 microcontroller used as the core was described in detail. The implementation plan of system development was confirmed based on the analyzing of the key technology of vortex flow-meter, which collected and processed the pulse signal from the pre-amplified circuit and sent to the module of D/A conversion converted into standard 4 ~ 40 mA output. The key of the design of hardware circuit and implementation of software was stated. The result tested and approved by the site shows that the technology index has met the design requirement with the character of reliability, which solves the problem of the large wastage of power and low stability. Its performance can be comparable with that of the same import products and its cost is much lower. It has a broad market prospect.
Gossip-Based Averaging Estimation and Optimization
Authors: Wang Chang Cheng , Qi Guo Qing , Li Yin Ya , Sheng An Dong
Published: July 2013

Motivated by applications to sensor, peer to peer, and ad hoc networks, we study the problem of gossip-based averaging estimation. Unlike the previous researches, we propose a novel agent time model with non-uniform ticking probability. Based the novel model, we use a pair-wise-typed gossip algorithm to estimate the unknown statistical parameter from a set of noisy samples. The convergence of this algorithm is analyzed in probability sense. The agents states will converge to the spatial average of estimated parameters, and the convergence rate can be improved by adjusting the ticking probabilities of agents. Furthermore, we propose an optimization method for ticking probabilities by the projection subgradient. An illustrative numerical example is provided to demonstrate the usefulness and flexibility of the proposed approach.
Design and Simulation of Portable Data Terminal for Agriculture Equipment
Authors: Yin Yan Xin , Tan Yu , Wang Shu Mao
Published: July 2013

A portable data terminal design based on wireless sensor network was came up for agriculture equipment working status monitor, a JN5139 module was used as the hardware core of the terminal and Zigbee as the wireless communication protocol. Effect caused by time-delay and pocket loss was simulated and analyzed with Truetime1.5 under matlab, data acquisition software was developed according to the simulation that effectively reduced the influence. Error measurement test showed the analog average absolute error was 6.33mv and frequency average absolute error was 0.56Hz, that indicated the reliability and availability in agriculture application.
A Design of Infrared Spots Tracking Platform Based on the Camera
Authors: Zhou Wei , Liao Qing Min , Zhou Fei
Published: July 2013

This paper presents a kind of verification platform similar to Wiimote infrared spots tracking, which is based on the ordinary camera, FPGA, MCU, and Bluetooth. By the maximum of data compression and algorithm optimization, this platform reduces the SW/HW resources and achieves the requirements of low-cost ASIC integration.
Generalized Synchronization for Two Different Fractional-Order Chaotic Systems
Authors: Zhang Dong , Zhou Ya Fei
Published: July 2013

A generalized synchronization scheme for two new different fractional-order chaotic systems is considered. The control scheme is simple and theoretically rigorous. The numerical simulations demonstrate the validity and feasibility of the proposed synchronization scheme.
Modeling and Parameter Estimation of Lithium Iron Phosphate Power Battery
Authors: Li Ming , Jiang Yang , Zheng Jian Zhong , Peng Xiao Xiao
Published: July 2013

Reasonable modeling and simulation of power battery, optimization of the estimated power battery parameters that can contribute to power balance control efficiently, prolong the service life of the battery power and reduce the cost of electric vehicles. Using the lithium iron phosphate (LiFePO4) power battery that adopted in current electric vehicles widely as the research object, choose PNGV equivalent circuit battery model based on the analysis of the static and dynamic characteristics of the battery. An improved least square method to identify the model parameters was proposed, the matlab/simulink simulation results show the estimation error of the proposed method is less than 3%, and validate the proposed method is effective.
Adaptive Observer of One-Sided Lipschitz Nonlinear Systems
Authors: Liu Hao , Ma Jia Chen , Yang Ming Li , Sun Yu De
Published: July 2013

Aiming to design an adaptive observer for one-sided Lipschitz nonlinear systems, the paper focuses on extensions to the restrictive nature of the Lipschitz continuity condition and the conservativeness of approaches proposed in the past. Main contributions include the following four aspects. Firstly, new sufficient conditions for the existence of observer and asymptotical stability are developed by using an LMI approach, which can be easily solved via standard numerical software. Then, the design scheme presented can cope with the situation where the one-sided Lipschitz constant is unknown, making the complexity of this algorithm reduced significantly compared to almost all existing results. Thirdly, we remove the constraint of quadratic inner-boundedness which is a limitation imposed extensively by the existing works. Finally, by integrating an adaptation law the conservativeness is dropped sharply, which makes the applicable systems larger. In the end, the effectiveness and less conservativeness of results are tested in a series of numerical examples.
Vector Decoupling Control Strategy for Three-Phase Voltage Source PWM Rectifier
Authors: Li Jian Ying , Yang Wei Dong , Ma Ni Na
Published: July 2013

In view of the fact that active power and reactive power have coupling relation, a novel vector decoupling control strategy is presented for three-phase voltage source PWM rectifier. In the paper, the power control mathematical mode of the PWM rectifier is deduced based on the mathematical model of rectifier in synchronous d-q rotating coordinates, and a new voltage feed forward decoupling compensation control strategy is proposed. The simulation results show that the voltage and current of the three-phase PWM rectifier have better respond preference, the current aberrance is smaller and the voltage is steady under the control strategy. The PWM rectifier can implement PWM commute with unity power factor, but also feed back the energy to AC side with unity power factor.
The Design of Output Feedback Controller for Inverted Pendulum System
Authors: Li Hong Xing , Lu An Shan
Published: July 2013

Inverted pendulum system is a complex, non-linear and uncertain high-order system. It is a simple model of the rockets vertical attitude control and two-legged walking robot control. It is used to study and validation of different control methods. The paper analysis the non-linear inverted pendulum system, then deduces sufficiency conditions of the existence of controller with output feedback and designs controller. It utilizes MATLAB software to get the answer. The feasibility of control method and robustness of controller are demonstrated by numerical examples.
Application of Attitude Matrix Row Element Sum Matching in Transfer Alignment
Authors: Wang Ju Feng , Cheng Nong
Published: July 2013

To reduce the calculation brought by attitude angle and attitude matrix matching as well as to insure the transfer alignment accuracy, the paper gives a method that uses slave inertial navigation system (SINS) error model as the state-space model. The complexity of the state equation can be simplified by this method, for the lever-arm effect can be compensated in the observables rather than considering it in the equation of state, in which the inputs do not need to be brought in the equation of state; On the basis of element matching of the attitude matrix with SINS and master inertial navigation system (MINS), the paper raises row elements sum matching method of attitude matrix, which has simpler structure of the observation matrix and lower dimension compared to attitude angle matching and element matching of the attitude matrix, so as to decrease filtering computation. Simulation results have proved that the model and matching algorithm in this paper are effective and the system can achieve higher transfer alignment accuracy.
Control Strategy of Wind Photovoltaic and Energy Storage System Stability Running
Authors: Zhang Ji Hong , Wu Zhen Kui , Li Hua , Li Han Shan
Published: July 2013

Micro grid may exert adequately distributed generation efficiency, and that wind Photovoltaic and Energy Storage is a key equipment in the micro grid. Aiming at the distributed generation existing intermittence and randomicity characteristic, the paper discussed the micro grid P/Q control method under the connection grid state and the micro grid U/F control method under the disconnection grid state. It also studied the distributed generation parameters variational law under the micro grid different run mode, and built the correlative mathematics model and tested by simulation. The results show: the control strategy ensured the mice grid running stably, and achieved the system anticipative design request, and offered theory foundation for the distributed generation extend application.
The Temperature Prediction in Blast Furnace Base on Fuzzy Least Squares Support Vector Machine
Authors: Zhang Qing Xin , Tao Yong , Cui Zhan Bo
Published: July 2013

The temperature prediction in blast furnace loses accuracy or Forecasts failure when the temperatures change is at normal levels and obvious. This paper introduces fuzzy membership of samples basing on support vector data description and the fuzzy least squares support vector machine to forecast the blast furnace temperature. Then the simulation was done by using the forecast samples and the model after training by MATLAB. Comparing the simulation results of LS-FSVM with LS-SVM, the model basing on LS-FSVM enhances anti-jamming ability. The accuracy of the temperature prediction in blast furnace promotes significantly when the temperature of blast furnace fluctuates.
Study on Application of Inventory Control Models
Authors: Han Qing Tian
Published: July 2013

Firstly, the inventory control models were studied, considering of the cost of store and lack of stock. Secondly, both the models of the distribution centre and supplier were presented. Finally, a numeric example was analyzed by applying the models. The results show that the models are easily to be carried out in engineering field, and it is useful to control the inventory and raise the store efficiency.
Robust Estimation for Discrete Time-Varying Uncertain Systems with Observation Losses in Networked Control System
Authors: Wang Bao Feng
Published: July 2013

In this paper, we deal with the robust minimum variance filtering problem for discrete time-varying systems with observation losses. The system under consideration is subjected to time-varying norm-bounded parameter uncertainties in both the state and output matrices, and the observation losses are described by a Bernoulli process with a known probability. An upper bound on the variance of the state estimation error is first found under certain probability of missing observations and admissible parameter uncertainties. Then, a robust filter is derived by minimizing the prescribed upper bound in the sense of the matrix norm. It is shown that the desired filter can be obtained in terms of the solutions to two discrete Riccati difference equations.
The H∞ Reconfiguration Controller Design for Aircraft
Authors: Yang Xiu Qin , Zhang Xiao Jie , Zou Kai Feng
Published: July 2013

Base on the parameter of actuator failure the model of aircraft with failure is founded. After that a Hinf reconfiguration controller is designed with LMI to rescue for aircraft when some failure occurs at actuator. At the last the simulation is done about the Hinf reconfiguration controller figures how to work. And the figures about that is given.
Application of Adaptive Fuzzy-PID Algorithm in Control of Pipeline Pressure
Authors: Li Dong Hui , Xu Yi Hui
Published: July 2013

Mathematical model of pipeline pressure is built according to mass conservation. Aiming at solving the poor adaptability of routine PID algorithm and the disturbance of inlet steam, adaptive fuzzy-PID algorithm and Feed-forward controller are proposed in the control system. System simulation is conducted by MATLAB, and parameter self-tuning rules determined by different errors are studied. Simulation results show that the pressure control system has better static and dynamic performance such as quicker response, smaller overshoot and better capacity of resisting disturbance.
Dynamic Simulation of a Solid Oxide Fuel Cell System for Micro Combined Heat and Power Application
Authors: Kang Ying Wei , Huang Wei , Xue Yang , Cao Guang Yi , Tu Heng Yong
Published: July 2013

In the past decade, developing solid oxide fuel cell (SOFC) systems for micro combined heat and power applications (micro-CHP, 1-10 kWe) is one of the hot spots in the world energy field. To meet the requirements for system optimization and control design of SOFC micro-CHP systems, in this paper a dynamic model of an SOFC micro-CHP system is developed, based on which dynamic simulations are also carried out. Simulation results show that the present model can reflect the behavior of the SOFC micro-CHP system quite well; the influence of one component on another is an important factor to determine system dynamic behavior; as the system comprises many components and concerns different physical and chemical processes, it has dynamic processes with several kinds of time scales; for the air preheating need, the heat-exchange area of air pre-heater is quite big, which leads to its big thermal inertia, and causes the dynamic process lasting for several ten thousands of seconds.
Simulating Manufacture of Epitaxy Wafers and Chips: E-Learning for Employees of a LCD Enterprise
Authors: Huang Kuo Hung , Lee Yen Lin , Chung Yi Chen , Chen Yan Fu , Huang Shih Hao , Cheng Ching Ching
Published: July 2013

This article describes the application of an e-learning system on the trainings of new employees in a LCD(Light Emitting Diode) enterprise. An international LCD chips manufacturing company regularly recruit and train new employees. Among the training content, the manufacturing process of epitaxy wafers to chips is abstract and difficult to understand, particular for those without engineering backgrounds. To make the training activities effective, the authors designed e-learning courseware with simulations of manufacturing processes. These web-based learning materials can be accessed before or after the training session. An experiment was conducted to evaluate the effectiveness of this e-learning system. The results revealed that this e-learning system significantly improved the learners content comprehension.
Turning Gear Control Based on Intelligent PID Algorithm for Simulation Robotic Fish
Authors: Xue Cui Wei , Ren Ye Tong , Xiang Wei , Geng Rui Zhi
Published: July 2013

The Problems that Simulation Robotic Fish Turn too Hard or Less due to Improper Angular Velocity Gear Values May Appear in the Process of Turning. in Order to Solve the Problems, this Paper Proposes a Method of Turning Gear Control for Robotic Fish Based on Intelligent PID Algorithm. in the Paper, the Control Rules and the Principle of Intelligent PID Algorithm are Discussed. Concrete Control Process with Simulation Analysis on Urwpgsimd is also Given. Experimental Results Show that it is Feasible that the Algorithm is Applied to the Turning Gear Control of Simulation Robotic Fish , and the Application of the Algorithm Effectively Avoids the Phenomenon of Turning too Hard or Less and Ensures the Accuracy of Turning Angle.
Development of PCBs Functional Tester with Relay Matrix Network
Authors: Zhang Ming Zhu , Wang Huai Qun , Chen Yi Min
Published: July 2013

This paper presents the development of the PCBs functional tester and the application of matrix relay in this system. It is stressed on the structure of relay matrix switch and its basic control mode. A topology of cascaded relay switch network is also proposed. The relay matrix in switch networks can achieve flexible connections of I/O pins on the specific PCBs being tested with varies signal resources and output processing modules without any hardware changes in the different test flows, only by PLC program changes. Therefore, complex test wiring can be saved when interface varied, as well as the enhancement of systematic universality. .
Short-Term Power Forecasting of Small-Scale Hydropower Based on Projection Pursuit Algorithm
Authors: Liu Wen Xia , Zhou Xi , Xu Xiao Bo , Xu Mei Mei
Published: July 2013

Compared with other traditional energy, the small-scale hydropower which is intermittent energy can not be stored and scheduled. The greater fluctuant of the output power of small-scale hydropower leads to great difficult to the operation of the power system. Most of the existing small-scale hydropower forecasting is considered as the load forecasting factors, and there is not effective forecasting method. This paper establishes an output power forecasting model of the small-scale hydropower based on Projection Pursuit. The simulation results show that the new algorithm has a strong practical application in the small-scale hydropower output power forecasting and the forecast accuracy meets the scheduling requirements.
Splitting Drops on a Piezoelectric Substrate by Help of Surface Acoustic Wave
Authors: Zhang Ai Liang , Fu Xiang Ting , Zha Yan
Published: July 2013

A new method for splitting drops on a piezoelectric substrate is presented. An interdigital transducer with the period of 144μm is fabricated on a 128° yx-LiNbO3piezoelectric substrate using microelectric technology. Intermittent surface acoustic wave is generated by an on-to-off radio frequency signal, which is applied to the interdigital transducer, and then radiates into a drop on the acoustic path of the piezoelectric substrate, leading to discontinuous acoustic streaming. A part of the drop is split due to inertia when the surface acoustic wave is suddenly disappeared. Red dye solution drops are demonstrated for fission experiments, and mixture operation of two drops is also implemented using the fission method. Results show that a drop can be split by help of surface acoustic wave, and the distance of two daughters is determined on the volume of the drop. The presented drop fission method provides a new sample preparation technique, which is helpful for microfluidic biochemical analysis in a microfluidic system.
Robust Consensus of Multi-Agent Systems with Nonuniform Time-Delays and Switching Topologies
Authors: Zhang Wen Guang , Liu Ji Zhen , Zeng De Liang , Deng Yan Song
Published: July 2013

This paper studies the robust consensus problem for multi-agent systems with nonuniform time-delays and switching topologies in the presence of external disturbances, where each agent has a self-delay and each delay is independent of each other. A neighbor-based rule is used for the agents with nonuniform time-delays and external disturbances. A sufficient condition is derived under which all agents achieve consensus while satisfying desired H_infinity performance. Finally, the effectiveness of the obtained theoretical results is demonstrated through numerical simulations.
A Novel Intelligent Elevator Group Control Algorithm Based on Corridor Passenger Detection and Tracking
Authors: Zheng Yi Peng , Zhang Zu Tao , Xu Hong
Published: July 2013

The conventional elevator group control system is based on the button as a response and where to dispatch an elevator car. There is one big problem that when system dispatches the elevator to that button responding floor, but no passenger there and causing a waste of time and energy. In this paper, we present a novel intelligent elevator group control algorithm based on corridor passenger detection and tracking. In the above proposed system, after the corridor passengers are detected using binocular-cameras, Unscented Kalman Filter (UKF) is introduced to improve robustness and accuracy of corridor passenger motion tracking. At same time, a novel intelligent elevator group control strategy based on corridor passenger detection and tracking is proposed to improve the performance and transport efficiency of the elevator. Compared with the traditional elevator group control system, the proposed system has potential advantages in minimizing passengers’ waiting time and saving electronic energy. The final experimental results show the validity of our method under simulation condition.
Numerical Simulation Research on Gas-Dust Flow Field of Forced-Exhausted Hybrid Ventilation in Whole Rock Mechanized Heading Face
Authors: Zhou Gang , Wang De Ming , Cheng Wei Min , Cao Sen
Published: July 2013

Euler-Euler two-fluid model was used to construct control equations of gas-solid two-phase flow, based on SIMPLE algorithm of collocated grid and FLUENT software, the pressure distribution of air-flowing field and dust field diffusion in fully-mechanized excavation face with different air-draft volume were simulated. The results show that with the increase of exhausted dust ability, diffusion intensity of producing dust pollution in driving head constantly decreases. Compared to air-draft volume of 320m3/min, when it is 600m3/min, the average dust concentration at the driver and whole section positions respectively decrease 51.28% and 56.51%, and high-concentration dust diffusion distance of the other workers position section decrease from 13.6m to 8.5m. Engineering Application indicates that the measured dust concentration is basically anastomosed with simulation result. When air-draft volume of dedusting fan is 600m3/min and dust control system with air curtain formed by forced fan drum is used, the dedusting rates of total coal dust and respirable dust on spot are respectively 95.1% and 96.1%, which achieves a great dedusting effect.
Energy Conversion for Gas Isentropic Compression Process with High Speed Rotation
Authors: Karlsen Haakon , Dong Tao
Published: July 2013

Energy conversion from rotational to thermal is investigated for a compressible ideal gas. The high speed rotation is considered as the driven force of the isentropic compression. The analytical model explaining the thermodynamic parameters (pressure, pressure gradient, density, and especially temperature) are developed. The analytical results are compared with the simulation data obtained from Finite Element Analysis, which employs compressible Navier-Stokes equations and heat equation. A good accordance between the analytical and FEA results has been observed. And it shows a predictable beginning and end state for the isentropic rotation process.
Speed-Control Strategy of Energy Regulation Based Variable-Speed Electrohydraulic Drive
Authors: Xu Ming , Jin Bo
Published: July 2013

Dedicated to the disadvantage of variable-speed drive, the energy regulation based variable-speed electrohydraulic drive is proposed. It is a novel solution by adding an energy regulation device and a flow valve into the system. It combines the advantages of variable-speed drive, valve control and energy regulation. But it is a multiple-input multiple-output control system, coupled with strong nonlinear, volatility and uncertainty of some parameters, which make the control strategy complicated. The multiple-compound PID control strategy, as well as the parameter tuning rule, is proposed.
Development of a Multifunctional Abrasion and Friction Test Bench with High Ambient Pressure for Seawater Hydraulics
Authors: Yang You Sheng , Zhang Qi , Nie Song Lin
Published: July 2013

Seawater hydraulic pump, of which the performances and service life are highly dependent on the structural design and material selection of the friction pairs and sliding bearing, are the power componentof the seawater hydraulic systems. Based on the previous studies, a seawater abrasion and friction test bench with high ambient pressure (≧20MPa) is to be developed for deep-sea (≧2000m) application environments. The technical requirements are presented and comparison analyses have been made between two testing schemes: rotating cylinder-blockscheme and rotating swash-plate scheme. Details are presented on the designs of the three key friction pairs and sliding bearing of the rotating cylinder-block bench. This research provides a test bench for the design of key parts in deep-sea water hydraulic pump/motor and the studies of the related theories (such as the friction and wear theory, lubrication and bearing mechanism).
Research on Motor Soft-Starting Based on IGBT in Port of Wheel Cranes
Authors: Tang Jing , Hu Ling Hua , Dai Han De , Su Li Juan , Wang Ji Ying , Hu Ji Quan
Published: July 2013

Port of wheel cranes are popularly applied in the logistics, and their lifting, luffing and slewing mechanisms generally adopt DC motors. Traditional method with stepwise resistors to start motors was very complex in calculation and control, but poor performance. Considering specific conditions of wheel cranes, a composited excited system and a new approach with dynamic resistors based on IGBT to start DC motors are presented. By expounding the principle, selection and control method, it illustrates the dynamic resistors could be simple in calculation and control, and could make motors linearly start and smoothly run. Examples prove that the dynamic resistors are perfectly practicable in port of wheel cranes for their small size, simple control method, excellent property and suitability for different DC motors.
Study on the Method of the Compensation for the Hysteresis Nonlinear Characteristics of Piezoelectric Actuator
Authors: Zhao Yue Rong , Shi Li Ping , Bi Yong Li , Wang Li Jing
Published: July 2013

Piezoelectric actuator has the characteristics of high displacement resolution, fast dynamic response, miniature size and etc. But its inherent hysteresis nonlinear affects its positioning accuracy. This paper analysis the hysteresis nonlinear characteristics of piezoelectric actuator, verifies the effect of hysteresis nonlinear on piezoelectric actuator, and compensate the hysteresis nonlinear characteristics by using the integrated control algorithm of feed-forward control and PI control, which can improve the control precision of the piezoelectric actuator.
Research on Accelerometer Output Error for Rotational Inertial Navigation System
Authors: Wang Lei , Wang Wei , Liu Jian , Liu Fang
Published: July 2013

In order to restrain the accelerometer output error in rotational inertial navigation systems (INS), the imbalance torque of inertial measurement unit (IMU) and the magnetic field of motor were analyzed based on engineering application. The cause of imbalance torque and its influence mechanism were explained. Method taking plumbum mass to balance the IMU was proposed. The influence mechanism of motors magnetic field on accelerometer output was discussed. Method taking differential signal to communicate was devised. The compared results show the accelerometer output error is decreased effectively after taking these two methods. There is lower noise and no slow drift or hop count in accelerometer output.
NOx-Sensing Characteristics of Sensor with La0.75Sr0.25Cr0.5Mn0.5O3 Sensing Electrode
Authors: Wu Yin Lin , Zhao Hai Yan , Wang Ling
Published: July 2013

Electrochemical sensors based on tubular yttria-stabilized zerconia (YSZ) with the perovskite-type oxide as a sensing-electrode (SE), which is prepared by sol-gel method, were fabricated and examined for NO2 detection in the temperature range 400~700°C. The results show that La0.75Sr0.25Cr0.5Mn0.5O3(LSCM), shows extreme sensitivity to NO2. The EMF varies linearly as a function of the concentration of NO2 (0 ~ 463 ppm) at 500 °C.
Application of Multiport Video Interface Controller to Banknote Checking
Authors: Qin Qing Wang , Zhang Jian , Feng Zhi Guo , Li Feng , Sui Jun Hua
Published: July 2013

To the banknote sorting system, application of large-scale high-performance FPGA can help to conduct high speed capture and processing of banknote color images. In line with the detection algorithm, the real-time-captured image upon color-space conversion needs to be compared in the four color channels of LGAB with the template images so as to work out the checking results. With Xilinx soft IP core MPMC, two sets of multiport video interface controllers have been designed, each of which embraces four ways of video data read-write operation; the controller interface parameters can be configured via the DSP interface, with the process flow control based on the image frame synchronizing signal. Tests conducted show that the controllers with flexible configurations boast of reliable performance and now are reputed for proven application to large banknote sorting equipment.
Neuron Network Model-Based Control System Model
Authors: Li Wei
Published: July 2013

When the control object complicate conventional PID control accuracy will be significantly reduced. In recent years, with the gradual improvement of the people of artificial intelligence theory, analog neural networks has been rapid development, the emergence of a large number of excellent algorithm and the means of achieving, from single neuron PID algorithm and with gain control neuron system PID algorithm, two aspects discusses the process of adaptive neuron PID algorithm to achieve accuracy improved adaptive neuron system controller PID algorithm based on this analysis.
Modeling and Simulating Industrial Manipulator Based on ADAMS
Authors: Wang Lei , Kang Yu Yun
Published: July 2013

Firstly, the industrial manipulators 3D model is built by using 3D software. Secondly, the 3D model is imported to the dynamic simulation software ADAMS, and the corresponding constraints and motions are added to the model according to the actual design requirements. Finally, the movement simulation is implemented and the displacement, velocity and acceleration curves of each direction for the end position and mid-position are given. The simulation results show the correctness and feasibility of the industrial manipulators 3D model. Therefore, this can provide a certain referencing value for designing industrial manipulator.
A User-Friendly VMM Based Interactive Mixed Signal Simulation Setup for MEMS Gyroscope ASIC Verification
Authors: Kumar G. Deva Phanindra , Kuang Jin Bo , Choudhary Vikas
Published: July 2013

Present day MEMS Gyroscope systems are almost always multi-die solutions with digital interface. Verification of such a system requires new and user-friendly methods to get first silicon success and reduce time to market. This paper presents an interactive mixed signal environment for verifying MEMS gyroscope system. To reduce time for verification this environment re-uses VMM environment made for digital verification. This environment provides common platform for different designers for validation of their designs.
Concentrated Driving Electric Passenger Vehicle Braking Control Strategy Optimization
Authors: Zhang Jun Zhi , Zhou Hui , Lin Cheng , Liu Peng
Published: July 2013

Regarding the centralized driving electric bus as the research object, the influence of Regenerative braking for vehicle braking performance is analyzed, and the original brake system was optimized, a braking control strategy, which does not reduce the vehicle braking safety and performance on the conditions of recovering braking energy as much as possible.
Design of an Intelligent Diagnostic System for Detection of Knee Injuries
Authors: Abdullah Azian Azamimi , Azz-Zahra Md Som Nur Siti Fatimah
Published: July 2013

Knee injuries is quite common in sport injuries and one of the most frequent happen are anterior cruciate ligament (ACL) knee injuries. There are two types of ACL injuries which are partial tear and complete tear. Currently physical tests, MRI image interpretation from expert and arthroscopy method are used to diagnoses the injuries. These procedures somehow are time consuming, invasive and operator dependent. To overcome these limitations, the intelligent diagnostic system using artificial neural network (ANN) has been proposed as an alternate way to give an early detection and also to classify the types of ACL injuries. We have used BP ANN and k-NN for the classification purpose. From these both classifiers, BP ANN give the higher accuracy which is 94.44% compared to k-NN classifier which the highest accuracy only up to 87.8333%.
A Simple Calculation of System Matrix Base on 2-D Index
Authors: Chen Hong Lei , He Jian Feng , Ma Lei , Liu Jun Qing
Published: July 2013

The system matrix plays an important role in the improvement of medical image reconstruction quality in iterative reconstruction. It consists of a certain sequence of projection coefficients. Projection coefficients indicate the radiological path through a tow-dimensional grid array which is constructed based on the reconstructed image. It is a common geometric problem of evaluating the radiological path through the grid array. This paper identifies the inefficient aspect of the traditionally precise evaluation of the radiological path. A new accurate and simple algorithm is presented, which considers that the projection coefficients can be shown in two-dimensional way. Experimental results based on GATE (Geant4 Application for Tomographic Emission) simulating PET (Positron Emission Tomography) imaging shows that the proposed algorithm is efficient to build up a system matrix, and the image can be reconstructed by the system matrix.
Image Evaluation Based on Region of Interest
Authors: Liu Jun Qing , Ma Lei , Xiang Yan , Yi San Li , Chen Hong Lei , Zhang Qian , He Jian Feng
Published: July 2013

Image quality assessment has broad applications in many fields, how to assess the quality of the image is an attractive research topic. In this paper, a ROIMDE method is proposed based on region of interest (ROI) and dual-scale edge structure similarity (SSIM), the quality assessment of the image is a weighted combination of ROI and non-ROI, the dual-scale edge structure similarity is used in ROI, and the classical structure similarity is applied in non-ROI. Experimental results show that, considering the influence of ROI, our model is more consistent with human subjective visual evaluation.
Phase Watermarking of Images with Complex-Valued Linear-Phase Subband Filter Banks
Authors: Chen Li , Peng Rong Hua
Published: July 2013

A new algorithm is proposed for digital watermarking by applying complex-valued linear-phase filter banks to low frequency-band coefficients of images in the DCT domain. The watermark is conveyed in the phase spectrum of the subband coefficients. The robustness of the algorithm is examined in JPEG encoding with different qualities and compared with the DFT-based approach. Because only low frequency-band DCT coefficients are applied to complex-valued filter banks, the computational load introduced by the complex-valued filter banks is kept low. The watermark decoding is only accessible to users with the key information, i.e., impulse responses of the complex-valued linear-phase filter banks that designed with time-frequency spread property.
Research on Email Security Policy Based on Network Technology
Authors: Ji Hong
Published: July 2013

With the rapid development of computer technology and network technology, the information age is quietly approaching. The development and application of the Email system is to be promoted. Email system plays an important role which provides efficient, convenient, safe and accurate transmission of information. The Email delivery relates to the activities of the personal privacy, however, the internet is an open network, the mail transmission will be a security threat from all sides which through the internet. The mail system security issue has become increasingly prominent and become the focus of growing concern. The paper describes basic principle of mail system, furthermore, it analyses the property of security risk and proposes mail security policy based on network technology.
Optimal Design of Adaptive Wavelet Neural Network Based on Hierarchy Genetic Algorithm
Authors: Gan Xu Sheng , Tang Xue Qin , Gao Jian Guo
Published: July 2013

Based on the study of adaptive wavelet neural networks, a hierarchy genetic algorithm is proposed to training network. Compared with standard genetic algorithm, the method can not only optimize network parameters such as scale factor, transform factor parameter and connection weights, but also solve structure problem of adaptive wavelet neural network. The result of simulation indicates that the algorithm can efficiently determinate the parameter and structure of adaptive wavelet neural network, and has better higher training efficiency and forecasting precision.