bluuebunny/crossref_metadata_2025 huggingface dataset:
Electric Field Calculation Software for Epoxy Resin Casting Dry-Type Transformer Based on the VB
Authors: Xu Jia Zhu , Zhou Ke , Yi Ji Liang , Liu Si Wei , Xiao Xun
Published: December 2013

In the paper, combining the advantages of interface design of VB and secondary design of ANSYS, the electric calculating software for epoxy resin casting dry-type transformer was designed. In the procedure of designing transformer, designers only need to input the structure parameters and electrical parameters of the transformer, which would be transferred to ANSYS Parametric Design Language (APDL) program automatically. Then, the different loading conditions and post-procedure programs can be selected. Furthermore, VB calls ANSYS from the background program and reads the APDL file to calculate electric field distribution. Finally, the case analysis verifies that the software can establish the finite element model automatically and calculate the electrical field distribution under any fundamental frequency voltage and lighting surge.
Study on Switch-On and Switch-Off Time of On-Line Monitoring for the Vacuum Circuit Breaker in Traction Substation
Authors: Chen Meng , Lang Bing , Cheng Peng Tian
Published: December 2013

This paper studies the method of determining switch-on and switch-off time of on-line monitoring system for vacuum circuit breakers in traction substation based on engineering project. In switch-on and switch-off process, the on-line monitoring system gets displacement signal of moving contact through the guyed displacement sensor, and gets vibration signal through the piezoelectric acceleration sensor, then the signal monitored is sent to the industrial personal computer through the data acquisition unit taking DSP as the core and the communication network. After comprehensive analysis by the backstage management software in the computer, switch-on and switch-off time can be determined.
Cotrolling Characteristic Analysis of Magnetically Controlled Shunt Reactor Based on Field-Circuit Coupled
Authors: Xing Jun Qiang , Chen Lei , Xing Zuo Xia
Published: December 2013

In order to restrict over-voltage and compensate line charging power, there is a need to install high compensation shunt reactors in ultra-high voltage AC transmission lines. Due to the saturation characteristic of core limb during the working progress in the magnetically controlled shunt reactor (MCSR), the current higher harmonics exist in the high voltage winding. Based on finite element, the method which analyzes the controlling characteristic of high voltage winding with 500kV MCSR demonstration project in the Jiangling converter station is presented in this paper. The magnitude and frequency of harmonic current in the high voltage winding current is derived by this method. Through the comparison with the measured results of 500kV MCSR, the validity of method is proved.
Simplified Model Reference Adaptive Method for Sensorless Vector Control of PMSM
Authors: Zheng Li Chuan , Zheng Yi Hui , Wang Xin , Li Li Xue , Xiu Shi Hong
Published: December 2013

Sensorless control of PMSM is becoming increasingly important among the whole control system. This paper introduced Integral Separation Technology to the PI regulators to decrease overshoot or oscillation of the system. In addition, on the basis of the mathematical model of PMSM, Vector Control System for PMSM is got. Then a simplified model reference adaptive method using the zero excitation current control to modify the adaptive rate is given. At last, the corresponding waveforms are presented and the reasonability and validity has been proved by the simulation.
An Analytical Model for Leakage Effect in the Electrical Generator of Rim-Driven Marine Current Power System
Authors: Xu Song , Wang Hai Feng , Gu Guo Biao
Published: December 2013

This paper presents an equivalent magnetic circuit model to predict the leakage effect, especially the end leakage effect, of surface-mounted permanent magnet synchronous machine (SPMSM) in rim-driven marine current power (RMCP) system. The end leakage effect is usually neglected in most conventional permanent magnet (PM) machines. However, it is significant in the electrical generator of RPCM due to the short axial length. The idealized path and analytical expressions of end leakage permeance are given in this paper. Finite Element Method (FEM) 3D/2D and experimental values are presented to validate the proposed analytical model. With no need for the time-consuming FEM-3D calculation, a correction factor base on the analytical mode is proposed to adjust the results (e.g. back-EMF, torque) of conventional design when end leakage is ignored in the calculation. The calculation results and experimental values show that the proposed analytical model is accurate to analyze the leakage effects of SPMSM in RMCP system.
The Analysis on the Effect of Ground Reflection in the Noise Test of Aircraft Engine
Authors: Yan Guo Hua , Chang Shuai , Zhang Yong Lei
Published: December 2013

The data processing of static engine noise test, especially the elimination of ground reflection to access the free-field sound pressure level, has been defined as one of the basic steps in aircraft noise prediction on the noise certification procedure by ICAO[1,. Based on the importance of the method, this paper will study the impact of the ground reflection effects on the aircraft engine noise experimental, especially made a detailed overview for the calculation method of reflective index.This paper also gives the method of fixing this effect to get the free field sound pressure level, while making experiments to verify the feasibility of this method, so that make the noise analysis and prediction according to the noise certification procedures.
Design and Calibration of Inductive Current Transformer
Authors: Wang Quan , Wang Huan , Xiang Qiong
Published: December 2013

In this paper, the design principle of inductive current transformer is introduced at first. Then an inductive current transformer is produced by applying the structure of two-stage inductive voltage divider. And finally, the error of the sample machine is given through examine test, and the suggestion for improving the machine is given based on the data. The data from the sample machine shows that: without compensation winding, the error level of 1200 ampere-turn of inductive current transformer can reach 0.1 level, after adding the compensation winding, it can reach 0.02 level. The design and data have laid a foundation for the future design of inductive current transformer with higher level of accuracy.
Construction for True Three-Dimensional Imaging Display System and Analysis Based on State-Space Model
Authors: Yang Yang , Luo Xin Yu , Yang Hui Jian , Liao Xing Yu
Published: December 2013

This paper presents a projection based on the true three-dimensional imaging display system. We analyzed true three-dimensional image display system imaging space construction, and proposed a new light emitting structure method of volume pixels (voxel), and also discussed feasibility employing local state-space model - Givone-Roessor model to compute the voxel variables. The mechanical structure is simple and the cost is inexpensive; the field angle is so larger that can display almost half a sphere except the zenith point; and the voxels constructor is easy to implement by micro controller due to the small amount of GR model calculation.
Sensitivity Analysis of the Networks with Fractional Order Reactance
Authors: Liang Gui Shu , Zheng Xing Hua , Ma Long , Dong Hua Ying
Published: December 2013

Fractional calculus theory has gained more and more applications in numerous fields. In many cases, using fractional reactance element model can describe the properties of objects more accurately and simply. This paper studies the sensitivity of networks with fractional order reactance, puts forward the adjoint network sensitivity formulas and the incremental network models of fractional order capacitor and inductor, which will further develop the adjoint network and Incremental network theory. The simulation verification is also given.
Study on Distribution Model of Electric Field for 220 kV Transmission Lines and Implement
Authors: Zhang Guang Zhou , Li Mu , Zhang Gong Da , Zhang Hu , Fang Shu Bo
Published: December 2013

For studying the environment of power frequency electric field near the transmission line, the electric field model of 220kV transmission line was made in charge simulation method. Using the model, the electric field strength nearby the ground that under the lines was calculated and the distribute curves were drew in MATLAB language. The results showed that increasing the height of the conductors to ground, the electric field strength at the same point becomes lower.
The Equivalent Method of Wind Farms Considering Wake Effect
Authors: Yan Jing Ru , Zhu Jin Yao , Zheng Xue Bing , Li Ran
Published: December 2013

It analyses the model of wake effect of wind farm in detail. Considering the energy loss caused by wake effect on the wind speed of wind turbine in different locations, the output of whole wind farm can be evaluated via the model, including the wind speed distribution. Then, it determines a kind of equivalent method of wind farm based on the output characteristic of the port of wind farm.
Passivity Based Hybrid Controller of Dual Euler Lagrange Model of Three-Level Three-Phase Neutral Point Clamped Voltage Source Rectifier
Authors: Dong Ting Ting , Wang Jiu He , Ma Xian Qin
Published: December 2013

The PBHC (Passivity Based Hybrid Controller, PBHC) with damping injection and neutral point potential balance was based on a dual-EL (Euler Lagrange, EL) model of three-level three-phase dual load NPC (Neutral Point Clamped, NPC) VSR (Voltage Source Rectifier, VSR) in dq reference frame. The simulation results from Matlab/Simulink show that the proposed control strategy has excellent performances: at the AC side, the THD (Total Harmonious Distortion, THD) is less than 5%, the PF (Power Factor, PF) is higher than 98%; at the DC side, the output voltage is able to track the desired voltage quickly, the capacitors votages are equal.
Implementation and Design of Voltage-Mode PFM Control Buck Power Converter
Authors: Lee Min Chin , Jan Ruey Wun
Published: December 2013

A lower power consumption, smaller output ripple and better regulation buck dcdc converter controlled by voltage feedback and pulse-frequency modulation (PFM) mode is implemented in this paper. The converter operating in discontinuous conduction mode (DCM) is designed and simulated using the TSMC 0.18μm 1P6M CMOS Process. Hspice simulation results show that, the buck converter having chip size with power dissipation about 0.68mW. This chip can operate with input supply voltage from 1.2V to 1.8V, and switching frequency from 249KHz () to 50KHz (), and its output voltage can stable at 1.0V and less than 110mV ripple voltage at maximum loading current 100 mA.
Design and Application of Power Active Filter Harmonic Extract Technology
Authors: Jiang You Hua , Huang Zhi Min , Ye Shang Xing
Published: December 2013

Active filter topology and principle are introduced. Harmonic data processing method is proposed . The method can greatly reduce the amount of computation of the controller to improve real-time. In addition, the working principle of the active filter topology and control strategies are introduced and analyzed. Results verify the correctness of the algorithm and the feasibility of the design.
Study on Asynchronous Sampling in Digital Electrical Energy Metering Based on IEC61850
Authors: Tang Yi , Jiang Bo , Li Hong Bin , Chen Xian Shun
Published: December 2013

Technical issues regarding asynchronous sampling for digital electrical energy metering based on IEC 61850 are studied. Asynchronous sampling is inevitable when the power network frequency fluctuates. The additional metering error caused by asynchronous sampling is simulated and discussed. The additional error can be as big as 2% under typical conditions, which is unacceptable. Quasi-synchronous sampling algorithm is employed to reduce the error. Simulation result shows that it can reduce the error to an ignorable level. The error under extreme conditions is also simulated and discussed.
Thermal Analysis and Design of the Cryogenic System for 12 MW Offshore Superconducting Wind Turbine
Authors: Li Xiao Yu , He Jie , Ren Li , Song Meng , Cao Kun Nan , Wang Da Da , Li Jing Dong , Shen Shi Feng
Published: December 2013

Applied superconductivity technology has been thought of being utilized in manufacturing large capacity wind turbines for several years. It is regarded as the only way to minify the volume and mass for large electric motors. Cryogenic system for the generator is fatally important, to create the necessary low temperature maintaining field windings superconducting state. Aiming at designing a reliable cryogenic system for large capacity as 12 MW superconducting generators field winding, in this paper, thermal numerical calculation and analysis for the superconducting coil with cold shield with multilayer insulation (MLI) are done, a dynamic model is established with finite element method (FEM) to verify the previous analysis. Optimization is also done to reduce the thermal loss. Proposal for the numbers of Cryocoolers needed and their layout in generator are given.
Modeling of Incentive Interruptible Load Contract for Practical Application
Authors: Huang Hai Tao , Zhang Mei Xia , Hu Xue Ying
Published: December 2013

Interruptible load contract is an important means of demand side management, but its existing models cant coordinate practicality with efficiency. Based on the curtailment cost function of consumers, this paper proposes an optional interruptible load contract and builds an optimal curtailment amount and compensation pricing model by introducing information display and incentive mechanism. The model can guide consumers voluntarily disclose the information on their true cost, and achieve the optimal allocation of load interruption. It is better to coordinate the relationship between utility and economic efficiency, which is more efficient than the traditional practical optional contract for interruptible load, and more practical than the theoretical model of interruptible load contract of fully nonlinear pricing. Numerical examples verify the effectiveness of the proposed model.
Optimal Allocation of Different Types of DG Sources Considering the Impact on Power Losses and Voltage in Distribution Networks
Authors: Zhang Xiao Ping , Song Xu Dong , Yu Nan Hua , Chen Jong Cong , Zhang Lei Lei
Published: December 2013

As the distribution energies are becoming the future trend to solve the tense fossil fuel supplying and environmental issues, further research on the management of DGs connected to system is necessary. Management of reactive power resources is vital for stable and secure operation of power systems in power losses and voltage quality. Base on this, an optimal power allocation strategy of different types of DG units which result in the minimum line losses and relatively good voltage profile is proposed in this paper.
Design of the Zigbee-Based Front-End Sub-System of a Smart Control System for Power Consuming Network
Authors: Mo Guang Ling , Su Wei , Liu Zhi Yong , Chen Chang Zhen , He Guang Yu
Published: December 2013

This paper briefly introduces a smart control system for power consuming network and its front-end sub-system. The front-end sub-system is developed on the Android platform, which consists of several Android applications. This paper briefly introduces the Android platform, describes the design and development of the Zigbee-based front-end sub-system of the smart control system for power consuming network, and finally gives several screen shots of the application interface.
High Precision Time Synchronization Algorithm for Smart Grid Based on Adaptive Filtering with Modified Particle Swarm Optimization
Authors: Han Wen Hua , Shen Xiao Hui
Published: December 2013

The time synchronization network provides time benchmark tasks for various services in electric power system. With the development of the power grid, the applications require more and more accurate time synchronization precision. In this paper, a method of time synchronization based on adaptive filtering with a modified particle swarm optimization (MPSO-AF) was presented to satisfy the high precision and high security requirements of the time synchronization for smart grid. The modified PSO was introduced for tuning the weight coefficients of the adaptive filter to improve the filtering property. The proposed MPSO-AF hybrid algorithm can combine the advantageous properties of the modified PSO and the adaptive filtering algorithm to enhance the performance of the time synchronization. A comparison of simulation results shows the optimization efficacy of the algorithm.
Reconfiguration of the Shipboard Power System Based on Particle Swarm Optimization with Non-Clique Topology
Authors: Chen Yang , Liu Yan Cheng , Wang Chuan
Published: December 2013

The modern shipboard power system integrates heavy loads and has less fault tolerance than the terrestrial power system. Therefore, a fast and high-performance reconfiguration is needed when a fault occurs. This paper proposes a method to achieve a rapid and optimal reconfiguration for shipboard power system. This method at first employs graph theory to generate the topology of particles, which can construct a non-Clique topology. Then, the particle swarm optimization algorithm with the non-Clique topology is used to improve the restoration scheme while considering constraints. The proposed Particle Swarm Optimization algorithm enables to find the optimal combination of loads that can be supplied after the occurrence of the fault.
Fuzzy Comprehensive Assessment of Urban Underground Power Cable Infrastructure Safety Risk
Authors: Yang Tai Hua , Zheng Qing Hua , Wang Yang
Published: December 2013

The power cable is one of the most important infrastructures, which safety and reliability is of an important significance to the stability and development of urban. To the safety risk features of urban power cable infrastructure, this paper proposed the safety risk evaluation index system and quantitative identification method based on analyzing the composition and construction features, and established the fuzzy comprehensive evaluation model of underground cable infrastructure safety risk. A case study shows that this method is feasible, and consistent with the practical construction, and proposed the measures to prevent the occurrence of major hazards.
The Optimization of Interruptible Load Based on the Minimum Network Loss
Authors: Mei-Xia Zhang , Hai-Tao Huang , Peng-Chao Guo , Jun-Bo Sun , Jie Chen
Published: December 2013

From the perspective of interruptible load participating in the standby system, this paper studies the interruptible load in capacity vacancy. Taking account of the constraints of generator, the capacity the users can provide and the IL compensation price, taking minimized the total cost of the purchasing of interruptible load and network loss as the objective function, the paper establishes a optimization model with interruptible load participating in spare capacity. Matlab program is used to calculate network loss. Through a two-node and five-bus system, interruptible Load optimization dispatch is solved, of course considering the network loss. Introduction
A Novel Prediction Method for Electric Power Demand Based on Markov Chain Model with a Fuzzy Probability
Authors: Zhang Hong Liang
Published: December 2013

In this study, a novel prediction method for electric power demand based on markov chain model with a fuzzy probability has been developed. The model improves upon the existing prediction methods with advantages in uncertainty reflection, such as the uncertainties in electric power system which reflect the vague and ambiguous during the process of power load forecasting through allowing uncertainties expressed as fuzzy parameters and discrete intervals. The developed model is applied to predict the electric power demand of a virtual city from 2011 to 2016. Different satisfaction degrees of fuzzy parameters are considered as different levels of detail of the statistic data. The results indicate that the model can reflect the high uncertainty of long term power demand, which could support the programming and management of power system.
A Study on Locational Marginal Prices Based on Single-Stage and Multi-Stage Optimization Models
Authors: Chen Da Yu , Zhang Li Zi , Chen Zhi Xu , Wang Shu
Published: December 2013

Theoretically, there are two kinds of models to calculate Locational Marginal Price (LMP): single-stage optimization model and multi-stage optimization model. In the paper, two mathematical models were analyzed and compared. Economic concept of LMP was explained and LMPs calculation was derived based on optimization methods. Characteristics of LMPs for different optimization models and how marginal generators and non-marginal generators can affect LMPs were discussed. In case study, the PJM five buses system was adopted to calculate LMPs under single-stage and multi-stage optimization model. The study results show that multi-stage model can accomplish economic dispatch more effective than single-stage model. But single-stage optimization model is better competent for LMP based settlement.
Research of the Power Control for a MCFC/GT Hybrid System
Authors: Yang Fan , Xue Hua , Li Hao
Published: December 2013

Molten carbonate fuel cell/ gas turbine hybrid power system (MCFC/GT) output power should real-time response the demand of load. The auto-tuning ZieglerNichols tuned PI controller (AZNPIC) as a feedback controller for power corrective action is added to the hybrid power system. The optimal setpoints and feed forward control inputs of the controller are given by Multi-output Support Vector Machine Regression (MSVR) predictor for the hybrid system. Simulation results show that the power of hybrid system can be effectively close to the desired setpoints based on the control method.
Impact of Coal-Electricity Integration on Chinas Power Grid Development Strategy
Authors: Wang Wei , Zhang Chen , Liu Wen Yan
Published: December 2013

The supply and demand structure of Chinas coal market and electricity market is undergoing profound changes. To respond to the conflict between coal industry and power industry, coal-electricity integration has gained support from The State through relevant policies. The development of coal-electricity integration plays a vital role in balancing the energy industrial structure. This paper introduces the evolution of coal-electricity integration policy and discusses the existing pool model of Chinas coal-electricity integration. And this paper also makes an analysis of coal-electricity integrations impact on the development of power grid, providing recommendations for power enterprises facing the new situation of energy development.
Robust Optimization of Steam Power System
Authors: Ding Ran , Li Guo Xiang
Published: December 2013

In steam power system optimal problems, uncertain parameters should be considered unless the solution will be infeasible. The uncertain parameters and constraints in steam power system optimization model are analyzed. Then the related constraints with uncertain parameters which used to be expressed by joint chance constraints are approximated, and a robust optimization model of steam power system is proposed. The simulation results illustrate the validity of the model.
Risk Decision Analysis on the Electricity Transaction of Power Enterprises in Electricity and Derivative Transactions
Authors: Huo Xiao Jiang , Cheng Hao , Wan Yu Hong , Liu Zhong Jing , Luo Yun Feng
Published: December 2013

In the environment of electricity and derivative transaction, the risk hedging and metastasis of power right transaction in China are needed to establish the risk decision-making for the generated energy/right on electricity generation side. And it will be the key point focused by decision-makers in power enterprises. The planning management of two-stage market transaction risk was conducted with the hedging function of generation rights transaction to establish a risk decision model of comprehensive electricity transaction. The relationship between the electricity price of two-stage market and the identity parameters of transaction participants was given for solving the model. The whole transaction process of generating companies was divided into two stages. The risk decision framework of block transaction was established for the independent transaction decision-making of each segment and the overall optimization. The results of example simulation verified the effectiveness and feasibility of the decisions.
Research of Aggregated Wind Power Prediction Method for a Region
Authors: Zhu Jin Yao , Yan Jing Ru , Shen Xue , Li Ran
Published: December 2013

Wind power is intermittent and volatility. Some new problems would arise to power system operation when Large-scale wind farm is connected with power systems. One of the most important effect is the influence on the grid dispatch. An aggregated wind power prediction method for a region is presented. By means of analyzing power characteristics and correlation, then the greater correlation is selected as model input. Based on grey correlation theory, a least squares support vector machine prediction model is established. Finally, this method is executed on a real case and integrated wind power prediction method can effectively improve the prediction accuracy and simplify the prediction step are proved.
Study on the Management Model of Pumped Storage Power Station
Authors: Li Yan Qing , Dong Chi , Li Hao Shan , Liang Zhi Fei
Published: December 2013

Power generation business models relate to the sustainable development of generation companies. This paper proposes an improved united lease management model for pumped storage power stations. Grid company, power generation companies (thermal power plants and nuclear power plants), and the government department jointly bear the rental fee. The amount of lease fees is determined according to the benefit of each renter. This paper conducted a case study of Huizhou Pumped Storage Power Station. The united power system simulation and auxiliary services compensation were applied to calculate the generation benefit, environmental benefit and dynamic benefit. The results suggest that the total incomes of Huizhou Pumped Storage Power Station are increased and the rental fee is fair and reasonable, indicating the rationality and effectiveness of this new management model.
Research on Analysis and Evaluation System of Power Grid Enterprises Asset Quality
Authors: Sun Yi Xin , Kong Chao , Yuan Shuai , Liu Gang
Published: December 2013

This paper summarized the operational characteristic of grid enterprises asset, and put forward the key factor which reflected asset quality. Then it adjusted the evaluation criteria of different index, determine relative weights based on AHP, and constructed an index system of analysis and evaluation on asset quality, which satisfied the requirement of domestic and overseas comparative analysis. As a result, this index system offers support on improving asset quality and controlling operational risk for power grid enterprises.
Design about Automatic Vehicles Following System for Field Vibrator Motorcade
Authors: Li Shu Qing , Zhang Huan , Tao Zhi Fei
Published: December 2013

As is known that the key points of unmanned vehicles are environmental perception, path planning and vehicles control. In order to achieve the goal of unmanned operations of the vibrator motorcade in the field, a low-cost automatic vehicles following system was established, which provided with environmental monitoring, real-time information feedback and control. And the designed system simplified the algorithm on the premise of ensuring the control accuracy and had a good effect on vehicles distance control with the help of Visual Studio. Finally, the LabVIEW program was programmed to guide the practical vibrator motorcade test, implementing the requirements of unmanned vehicle platoon control system. The results show that the designed vehicles distance control system works well in security distance control and meets the needs of vibrator motorcade, providing feasible reference for future specific applications of unmanned vehicle platoon in practice.
Digital Model Research on and Design of Large Plate Column
Authors: Shi Yan , Zhou Min , Huang Ya Chun
Published: December 2013

To improve the efficiency of large plate column design, enrich design information and facilitate the analysis design and fabrication, this article puts forward column parts design parameters and the spatial topology should be determined based on the failure forms differences, manufacturing processing batch differences and the particularity of column assembly method and other factors. Moreover, complete digital model of large plate column should be designed on Creo platform. The whole process conforms to the plate column engineering design program, and its design efficiency and rationality of parts and assembly parts are greatly improved.
The Research of Moulds Digital Repairing Based on Laser Cladding
Authors: Li Jin Hua , Zhang De Qiang , Su Zhi Chao , Yao Fang Ping
Published: December 2013

The technology was put forward on mould broken areas 3D digital remanufacturing. Based on CAD and laser cladding, it is finished including 3D repairing-trajectory modeling, editing manufacturing program and laser cladding processing. The pre-processing tasks are the experiment of laser cladding parameter, the broken areas pretreatment and measurement, and the repairing task is finished by machining after laser cladding.
The Technological Study about Cutting Stainless Substrate by Nd:YAG Laser
Authors: Yin Gui Min , Li Zhan Guo , Shi Yao Chen
Published: December 2013

Cutting stainless substrate by Nd:YAG laser processor, researching the effect of technological parameters on fringe frequency and hang slag. To research the effect on cutting quality which was made by laser cutting technological parameters and find out the optimum technology parameters of laser cutting by using orthogonal experiment.
Optimize Design on the Key Parts of Ring Die Fuel Pellet Machine
Authors: Gao Wei , Liu Qing Yu , Zhao Rong Fei , Gu Shi Yang
Published: December 2013

This paper analyzes the problems existing in the design and operation of ring die fuel pellet machine, and proposed to optimize the key parts. Determine the reasonable number of roller on the theory of fatigue damage after drawing up the related design parameters of ring die and the roller, a three-dimensional model of the link mold pellet machine is established using Pro/E soft-ware, and transferred the model into ADAMS software through Mech/Pro which dedicated interface software, then used ADAMS to make a dynamics simulation. Through calculation, the stress amplitude impact on the ring die and the Energy consumption per unit output are smallest when roller number is four. So, ring die service life and equipment production efficiency can be improved effectively through setting up reasonable roller number.
Keywords-fuel pellet machine; roller; ring die; fatigue damage; three-dimensional model; dynamics simulation
Meta-Consensus: Consensus as a Fundamental Concept on Swarm System Dynamics and Formation Control
Authors: Ma Hai Ying , Cao Ying Yi
Published: December 2013

In this note a theoretical framework based on consensus of dynamic swarm systems is presented. Consensus is somewhat analogous to equilibrium, and it is the foundation for topics such as formation control and swarm stability in a decentralized viewpoint.
On Solutions of Inverse Problem for Hermitian Generalized Hamiltonian Matrices
Authors: Liang Kai Fu , Li Ming Jun , Zhu Ze Lin
Published: December 2013

Hamiltonian matrices have many applications to design automation and autocontrol, in particular in the linear-quadratic autocontrol problem. This paper studies the inverse problems of generalized Hamiltonian matrices for matrix equations. By real representation of complex matrix, we give the necessary and sufficient conditions for the existence of a Hermitian generalized Hamiltonian solutions to the matrix equations, and then derive the representation of the general solutions.
Study on a Pneumatic Artificial Muscle Actuator
Authors: Yu Lian Zhi
Published: December 2013

Pneumatic artificial actuator had been designed and was used as power driven. A 3-DOF Pneumatic artificial actuator was described as a micro-robot flexible actuator, the mechanical model and dynamic characteristics were studied for high accurate control. The control system was designed and the actuator characteristics were tested in experiments. Results prove the pneumatic artificial actuator has good performances and can be controlled in high speed and high accuracy by computer system with PWM (Pulse Width Modulation: PWM).
The Research of Malicious Code's Spread and Found Technology
Authors: Fan Ya Qin , Zhang Xin , Chen Xin Yu , Li Chi
Published: December 2013

In order to defense malicious codes increasing serious infestations actively. We proposed several corresponding malicious code found and detection technology on the basis of malware propagation principle. We use MATLAB simulation software to achieve the malware propagation model and detection technology. We proved the practicability of the discovery technology, and present improved methods for the deficiency of the model.
Family Health Telemonitoring System Based on WSN
Authors: Wang Jun , Fan Zhen Huan
Published: December 2013

A family healthcare monitoring system based on ZigBee sensor network was researched and designed. The article described the architecture of the system, discussed the framework of the detector nodes using CC2530 as main chip and the family gateway based on MSP430F2419. Physiological parameters and the corresponding sensors were introduced in the article. With advantages of low cost, strong flexibility and always online, the system can be widely used in community healthcare and personal family healthcare.
A Multi-Objective Optimization Method for System Reliability Allocation
Authors: Li Wei , Zeng Qiang , Shen Ling , Zhang Ze Bin
Published: December 2013

A multi-objective optimization method for system reliability allocation was proposed. Firstly, a constrained multi-objective optimization model for system reliability allocation was established with the objective to maximize the system reliability, minimize the cost, volume and mass. Secondly, aiming at the characteristic of the model, a non dominated sorting genetic algorithm with elitist strategy (NSGA II) was presented and designed. In the algorithm, an object-oriented technique was introduced to map each individual to each corresponding object and a population to an array of objects, each individual was encoded by each corresponding vector made up of the selection indices of every function unit, the tournament selection strategy was used to implement the selection operation based on the ranks and congestion degrees of the individuals, a swap way of two-point gene segment was used to implement the crossover operation, a one point mutation way was used to implement the mutation operation and the Pareto operation was implemented based on the ranks and congestion degrees of the individuals. Finally, the effectiveness of the proposed research was validated by case study.
Distributed Remote Monitoring System Key Technology Research on Agent
Authors: Lv Peng Liang , Chen Guo Shun
Published: December 2013

Recent years, as computer science and the development of high-tech communications networks, distributed artificial intelligence field of artificial intelligence research as an important branch, more and more industry attention. One of the Agent and Multi-Agent technology research became a hot topic of distributed artificial intelligence research. Research on Multi-Agent technology is mainly a group of autonomous distributed open Agent in a dynamic environment, through interaction, cooperation, competition, negotiation and other acts perform complex control or task solving. Because of its better reflect human social intelligence, more suitable for an open, dynamic social environment, thus causing researchers in various fields of interest, and is widely used in scientific computing, computer network e-commerce, business management and traffic control, etc
The Design of a Wavelet-Based Neural Network Adaptive Filter
Authors: Xiao Qian , Jiang Yu Shan , Cui Ru Zheng
Published: December 2013

Aiming at the large calculation workload of adaptive algorithm in adaptive filter based on wavelet transform, affecting the filtering speed, a wavelet-based neural network adaptive filter is constructed in this paper. Since the neural network has the ability of distributed storage and fast self-evolution, use Hopfield neural network to implement adaptive filter LMS algorithm in this filter so as to improve the speed of operation. The simulation results prove that, the new filter can achieve rapid real-time denoising.
Improving Chemistry Supply Chain with Business Intelligence Architecture Updates
Authors: Carvalho Tiago Vieira De , José Sassi Renato
Published: December 2013

In 2007 it started an important Project that made a chemistry company drastically review the way it used to measure results and to conduct its business units and processes. The project scope was to migrate not only the actual Business Intelligence architecture to a more efficient and effective Business Intelligence architecture but to also to review the way company was driving its figures. This article's objective is to demonstrate how one project that changed the Business Intelligence Architecture was important to make the chemistry company more efficient and the legacy of good practices that the project brought to the company, enabling it to gain on costs reduction and process standardization and establishing many competitive advantages.
Real-Time Acquisition System of Multi-Channel Signal Based on PCI
Authors: Sun Rong Chun , Piao Yan
Published: December 2013

Real time data acquisition system has been paid wild attention to due to exponentially expanding industrial control and measurement. Of many industrial bus, PCI (peripheral component interconnect) bus is a very useful communication protocol available for off-the-shelf PC and high speed acquisition. In the document, an implementation solution of data real-time acquisition based on PCI bus is described. The data acquisition system mainly consists of signal regulation circuit, AD conversion, LVDS transmission, PCI controller. XC3S700 of XILINX FPGA was used as the core chip to bridge and control all parts, which has rich internal resource. Driving program of PCI bus was designed by VC in industrial computer. Test results show that the system can collect multi-channel signal concurrently, steadily and in real time, and has some application value.
Dynamic Joint Decision on Price and Delivery Date in MTO Manufacturer Based on Agent
Authors: Hao Juan , Yu Jian Jun , Wu Mian Can
Published: December 2013

In order to maximize the total profit and improve the service level, based on the perspective of queuing theory, a new approach for dynamic joint decision on price and delivery date in Make-to-order (MTO) manufacturing firms using Q-learning algorithm was proposed. Compared with static price and delivery date policy, the simulation results show that the proposed algorithm performs better in total profit and service level. The total profit does not increase with the growing number of accepted orders and the number of accepted orders must match the production capacity.
Periodic Solutions for Nonlinear Evolution Equations in RN
Authors: Zhang Li Hong , Li Wei Jie
Published: December 2013

The aim of this paper is to establish the existence and uniqueness of periodic solutions for a nonlinear periodic problem:

in RN where A(t, x) is a nonlinear map and B is a bounded linear operator from RNto RN .
The Hardware Design and Implementation of Liquid Level Detection System for Lead-Acid Battery
Authors: Bi Ya Jun , Li Hong Fei
Published: December 2013

The hardware structure of a liquid level detection system for lead-acid battery was briefly introduced. The system adopts AT89C51 MCU as host module, combined with display storage, extended storage and the watch dog technology. The slave module adopts AT89C2051 MCU, which driver the linear CCD to realize non-contact measurement in acidic and corrosive conditions. The infrared transmission module uses RS-232 serial-to-infrared technology to realize wireless data delivery. The damage due to sensor corrosion could be avoided in this system. Compared with other similar equipments, this system has the advantages of simple structure, small volume, low cost, high measure precision and convenient maintenance.
Devaluation Modelling for Residantial Buildings
Authors: Volkov Andrey , Muminova Svetlana
Published: December 2013

A novel integrated mathematical model for the devaluation of residential buildings with time is presented. Devaluation model is an useful tool to predict residual life span of the building. Knowing how building behaves with time, one can influence on its properties by the means of renovation or reconstruction activities which counteract the aging processes. This approach can be regarded as the way to make total service life span of residential buildings longer.
Application of Improved BP Neural Network in Threshold Selection for Image Processing
Authors: He Yang Ming , Du Jian Qiang
Published: December 2013

There are a lot of methods to select threshold in image processing. Because BP neural network can adapt to fixed environment, it is applied in this area in this paper. Firstly, according to the feature of image, BP neural network is constructed. The input items of network are the features of image. The mean value and variance of gray in the image is the important features of image, so two input items can be chosen. The output items are the values of threshold. If one threshold is chosen, one output item can be chosen. In some condition, two thresholds should be set, then two output items would be chosen. In order to overcome the shortcomings of BP neural network, it should be improved by certain momentum which is used to avoid local minimums. In order to speed the training of the network, adaptive learning rate should be used, too. The BP neural network establishes the relationship between the features of image and the threshold. After training, the network can select suitable threshold for images in fixed environment. Some practical images are used to prove its good effect.
The Environmental Information Monitoring Network Set up Based on Service Discovery Mechanism
Authors: Li Zhao Ming , Yang Xu
Published: December 2013

The wireless sensor network is widely used in the largely data measure. The research on the energy consumption is the key point in its practical application recently for the wireless sensor network has the problem of energy restrain. Considering the wireless sensor network applies in the information monitoring system on environmental has the inadequate of the limited energy of nodes and the irregular network energy consumption, this paper analyses the basic structure of the environmental sensor network, and proposes the service discovery mechanism based on the catalogue model. This system can reduces the systems energy consumption, and is able to achieve the purpose of increasing the reliability and security of the sensor network, reducing the data redundancy degree and extending the lifetime of the network according to the experimental simulation.
Pitch Perception of Medium-Rank Harmonic Complex Tones Based on Temporal Analysis
Authors: Wang Jian , Guan Tian , Ye Da Tian
Published: December 2013

Fundamental frequency difference limens were measured for a target harmonic complex tone (HCT) in the absence and presence of a masker HCT, which were filtered into the same bandpass frequency region and were gated on and off synchronously. There were three kinds of nominal fundamental frequencies (F0s) for target (200, 400, and 800 Hz), five kinds of F0 separations between target and masker (0, ±3, and ±6 semitones), and four kinds of phase combinations. Results found significant effects of nominal F0, phase combination, and F0 separation between target and masker. Analysis based on temporal profile proved that the significant effect of nominal F0 could be explained by peak height of target, and that the significant effects of F0 separation and phase combination could be explained by the ratio of temporal peak heights between target and masker. Thus it is suggested that F0 discrimination of medium-rank harmonics probably depends on the use of temporal fine structure information.
Modeling and Analysis of Large-Scale Wind Power Cluster Effect
Authors: Wang Jian Feng , Zhao Dong Mei
Published: December 2013

To model the fluctuation characteristics of wind power is the basis for solving wind power integration problems. This paper studies the cluster effects of large-scale wind power, proposed a series of new cluster effect evaluation indexes, which have clear physical meanings and is conducive to the actual needs of the power system; based on Gaussian Mixture distribution, the probability distribution model of the cluster effect is established, which was verified with the actual operation data; The paper then proposed confidence interval model of cluster effect evaluation indexes, studied the variation of the cluster effect, shown the power function relationship between cluster effect evaluation indexes with scale of wind power.
Two-Stage Local Polynomial Regression Method for Image Heteroscedastic Noise Removal
Authors: Su Li Yun , Wang Chun Hua
Published: December 2013

In this paper, we introduce the extension of local polynomial fitting to the linear heteroscedastic regression model and its applications in digital image heteroscedastic noise removal. For better image noise removal with heteroscedastic energy, firstly, the local polynomial regression is applied to estimate heteroscedastic function, then the coefficients of regression model are obtained by using generalized least squares method. Due to non-parametric technique of local polynomial estimation, we do not need to know the heteroscedastic noise function. Therefore, we improve the estimation precision, when the heteroscedastic noise function is unknown. Numerical simulations results show that the proposed method can improve the image quality of heteroscedastic noise energy.
Semantic Analysis Investigation of Data Mining Technology in Network Forum
Authors: Xu Li Li , Jia Bao Xian , Li Huan , Liu Shu Yu
Published: December 2013

Along with the network popularization and reform of the government administration, e-government gradually popularized. The populace can comment on government work and the related policy on its website. Because of the richness of Chinese language and dialect, people can use their own dialect.The same opinion may have different statements. The worker have some difficulties when collect and analyze these views. Ontology is a specification of a certain field,to express concept of the particular field and the relationship between them.Ontology can be used for semantic analysis of the various views, to analyze that the people is "agree" or "against", "support" or "not support". Even though different vocabulary, through semantic analysis, can be classified according to their semantic.In the process of analysis, analyse the text comments received throught the data miningstatistics.In addition, also need to construct the relevant language ontology. Language ontology defines many synonyms and near synonyms. Ontology as a reference to sort the comments of the people, analyze the attitude of the people and related laws.