bluuebunny/crossref_metadata_2025 huggingface dataset:
Numerical Study of Dynamic Load Concrete Failure Process Using Extended Finite Element Method
Authors: Fan Cheng , Jing Xue Qing
Published: July 2013

This paper is mainly based on the basic principle of the extended finite element ,in the large commercial software abaqus on the platform of dynamic load eccentric mixed-mode of concrete failure process are numerically simulated, the results showed that the crack together under tension and shear ,crack extension direction and the direction of cracks was obvious deflection, and is in good agreement with the physical experiments, also shows that the extended finite element fracture problems have very good advantage.
Research on the Vibration Analysis of Cantilever Truss Structure and its Test
Authors: Sun Zhong Xing , Tang Li Wei , Zhou Jie
Published: July 2013

Based on the background of rotary platform of launching tower ,the continuum method based on rigidity equivalent principle and mass equivalent principle is used to transform the truss structure to an uniform solid cantilever beam rotating around its edge ,which makes the vibration equations establishment with methods of parameter supposition and numerical analysis possible . The agreement of the calculation results and the test results means method of this paper available in the vibration analysis of cantilever truss structure .
Radiated Electromagnetic Interference of Electronic Equipment
Authors: Liang Zhen Guang , Yang Ming Yuan
Published: July 2013

Radiated electromagnetic interference (EMI) is an important criterion for electronic equipment to be met. In the paper, radiated EMI generated by electronic equipment is discussed. Several radiation structures are presented and approximate expressions of maximum radiated electric field are given. In order to reduce radiation of electronic equipment, its important to eliminate unintentional antenna structure and reduce maximum size of aperture and slot on shielding enclosure.
Design of Sensor for Detecting Corona Discharge Signal in Specific Band
Authors: Zhu Li , Liu Shang He , Zhang Yue , Huang Fan Yan , Zhu Hua Jie
Published: July 2013

Corona discharge signal from the high-voltage transmission line exhibits unique characteristics compared to other radiation signals, which include wide distribution of frequency, small signal amplitude and strong randomness. The properties of frequency distribution of corona discharge signal and noise were tested in the range of 0 MHz-1.5 GHz to obtain the most beneficial detecting band. Based on the characteristics and properties, a high-gain helical antenna with the center frequency of 250 MHz was designed, and the performance of the antenna was tested. The corona discharge signal from 550 kV extra-high-voltage power line at the distance of about 320 meters was successfully detected by the helical antenna. The results showed that this design achieves the expected requirements and have a good practical performance. The design of antenna may provide supports for the further research on remote detection system of corona discharge signal.
Design of Common Modulation Signal Generator Based on Single-Chip Microcomputer
Authors: Ni Guo Qi , Peng Xin , Huang Ling Lu , Wang Li Na
Published: July 2013

The common modulation signal generator is mainly composed of STC12C5A60S2 SCM (single-chip microcomputer), DAC0832 chip and their peripheral circuits. Controlled by the SCM, the required analog current is produced by DAC0832, then the current is converted a-5V~5V voltage by the amplifier OP07. Through the control of the switches, the triangle, square, sine and pulse waves can be outputted from generator. Among which, the amplitude of triangle and square and sine waves can be adjusted. The width of square wave and the pulse can be adjusted. Many modulation cases can be showed on the LCD screen. It is proved that the design on the generator is reasonable, the generator performance is stable and reliable, its structure is simple, and its function is high versatility. Admittedly, the designing on modulation signal generator accords with requirement.
Design on Intelligent Wireless Remote Terminal Assembly
Authors: Xie Ding Chao , He Hai Jiang , Le Heng , Zhu Yi Qing , Zhang Qi Sheng
Published: July 2013

In order to reduce the power consumption of household appliances resulted from standby; an intelligent wireless remote terminal assembly is hereby designed on the basis of such chips as MSP430F4152, HCS301, TDH6301 and so on. This paper introduces MSP430F4152 as a core processing chip, and a scheme integrating wireless control with intelligent control is adopted. The scheme presents power circuit, wireless transmission and receiving circuit, sensor circuit, keystroke and LCD display, etc, as well as master control program, which are characterized of great function, convenient application, high safety factor, low power consumption and so on, and can be applied in many places.
Research of WirelessHART Network Layer Routing Algorithm
Authors: Wu Zhen Zhen
Published: July 2013

WirelessHART, a kind of wireless mesh communication network that suits process automation, are widely used in the industrial fields. Routing algorithm performance directly determines sensor nodes how to transfer and control data, and the effective data rate. The algorithm which affects the energy consumption and lifetime of the whole sensor network is the core content of the network layer. WirelessHART network layer routing algorithm includes Source Route and Graph Route. In this paper, WirelessHART routing algorithm is simulated using nesC language in the TinyOS, and then compares with AODV protocol. And the data of experiment show the application advantage of WirelessHART Graph Route.
A New Best-Fit Method for Distorted Reflector Antenna Surface
Authors: Chang Wen Wen , Yusup Ai Li , Xiang Bin Bin
Published: July 2013

Actual reflector antenna always has a deformation which has a serious influence on antenna performance. Establishing the equation of the distorted reflector surface is important for calculating antenna performance and precise control. A new best-fitting method based on least square method is submitted in this paper. This method depart from the ideal parabolic equation, and use the distance between the deformation point and the correspondent fitting point to establish the least square error condition equations, though which the six parameters can be got to determine the geometry position of the deformed parabolic accurately. Matrix operation can make the algorithm easy to realize in computer. Nan-shan 25m antennas finite element model is established in ANSYS program, and its result is analyzed compared with another method, confirmed the operability and accuracy of this algorithm.
Development and Realization of GSM-SMS Link Platform
Authors: Zhang Xiu Li , Liu Dong Liang
Published: July 2013

We discussed the development of SMS link system for sending and receiving short messages between corporation and users. We compared the advantages and disadvantages of several implement approaches and proved the correctness of our current system. We also discussed the mechanism, function, and features of our SMS link system.
Research on Development and Application of New Particulate Matter Sensor
Authors: Li Nan , Tang Dong , Li Chang Yuan , Chen Lie
Published: July 2013

Because the stricter emission regulations of diesel engine particulate matter are continuously presented, the new type sensors for diesel on-board diagnostics (OBD) are needed to detect PM emissions accurately. Sufficient heat resistance and endurance, ability to endure the harsh environment of the exhaust are necessary for these sensors. The working principles of several kinds of sensors are introduced in this paper. The flow field is simulated for resistive soot sensor, the forcible soot collection method is introduced for the capacitance PM sensor and the electrode of electrochemical sensor added ionomer is analyzed. At the same time, the application of the sensor is introduced for the future.
Word Similarity Computation Based on WordNet and HowNet
Authors: Zhang Pei Ying
Published: July 2013

Word similarity computation is broadly used in many applications, such as information retrieval, information extraction, text categorization, word sense disambiguation and example-based machine translation and so on. The main obstacle of word similarity computation lie in that how to develop a computational algorithm that is capable of generating satisfactory results close to how human perceive. This paper proposed an approach of word similarity computation which combined WordNet and HowNet. Experiments on Chinese word pairs show that our method is closest to human similarity judgments when compared to the major state-of-art methods.
Automatic Discovery of Non-Ranking Functions with DISCOVERER
Authors: Mu Lin , Qiao Xiao Dong , Hao Chun Yun , Mu Yong Xiang
Published: July 2013

This paper proposes a definition of non-ranking functions of loop programs and investigates how to apply the techniques on synthesize Non-ranking functions of loop programs. It is shown that this new non-ranking function works well to determine the termination of loop programs.
A Real-Time Ore Proportioning System in a Large Open-Pit Copper-Molybdenum Mine
Authors: Yang Hua , Hu Nai Lian , Xu Zhen , Chen Li
Published: July 2013

This paper introduces a new technology using a new mathematics model to solve the blending problem of two or more kinds of minerals, which grades are very different even in orders of magnitude, and creates a blending system which can produce an optimal program of blending automatically using a feedback process based on Surpac, a mining software, and achieves a real time truck dispatching system finally. All of above can improve quality and quantity of the minerals blending stably, that has been proved in practice. According 2001s record, this system had the Cu grade amplitude down from 10.54% to 3.72% and the Mo grade amplitude from 6.49% to 3.11%.
Using Self-Similarity to Incorporate Dimensionality Reduction and Cluster Evolution Tracking
Authors: Yan Guang Hui , Chen Yong , Zhao Hong Yun , Ren Ya Jin , Ma Zhi Cheng
Published: July 2013

Cluster evolution tracking and dimensionality reduction have been studied intensively but separately in the time decayed and high dimensional stream data environment during the past decades. However, the interaction between the cluster evolution and the dimensionality reduction is the most common scenario in the time decayed stream data. Therefore, the dimensionality reduction should interact with cluster operation in the endless life cycle of stream data. In this paper, we first investigate the interaction between dimensionality reduction and cluster evolution in the high dimensional time decayed stream data. Then, we integrate the on-line sequential forward fractal dimensionality reduction technique with self-adaptive technique for cluster evolution tracking based on multi-fractal. Our performance experiments over a number of real and synthetic data sets illustrate the effectiveness and efficiency provided by our approach.
On Possibility Interval-Valued Fuzzy Soft Sets
Authors: Yang Yong , Meng Cong Cong
Published: July 2013

Soft set theory, initiated by Molodtsov, can be used as a new mathematical tool for dealing with imprecise, vague, and uncertain problems. In this paper, the concepts of two types of possibil­ity interval-valued fuzzy soft sets are proposed. Their operations and basic properties are studied which are subset, equal, relative complement, union, intersection, restricted union, extended intersection, “AND”, “OR” and De Morgan Laws. Furthermore, an application of the new approach in decision making based on possibility interval-valued fuzzy soft set is illustrated.
Spectral Conditions for a Graph to be Hamilton-Connected
Authors: Yu Gui Dong , Fan Yi Zheng
Published: July 2013

Some spectral conditions for a graph to be Hamilton-connected in terms of the spectral radius of the adjacency matrix or signless Laplacian of the graph or its complement are established, and then the condition on the signless Laplacian spectral radius of a graph for the existence of Hamiltonian paths or cycles is given.
H∞ Filtering for Network-Based Systems with Consecutive Packet Dropouts and Delayed Measurements
Authors: Wang Jin Yu , Li Xiu Ying , Mao Lin , Xue Jing Yan , Meng Hua
Published: July 2013

The filtering problem is studied for a class of discrete-time systems under the effect of the networks. The investigated issues involved by the network include the consecutive packet dropouts and the one-step transmission delays which can be described by a sequence of mutually independent Bernoulli distributed stochastic variables. A full-order filter is designed such that the filtering error system is exponentially stable in the mean square and the performance is also achieved. Sufficient conditions are developed for the addressed problem and the desired filter is derived by means of the feasibility of certain linear matrix inequality. Numerical example is given to illustrate the effectiveness of the proposed method.
Logistics Network Nodes Importance Analysis Based on the Complex Network Theory
Authors: Wu Yina , Ma Hui
Published: July 2013

Logistics systems can be abstracted to complex networks which are composed of logistics nodes and transport routes. The structure and geometric properties of the complex network has an important impact on the logistics industry development and management. The article use a provinces logistics network as the prototype and build a complex network. Apply complex network theory to analyze the logistics network. The article found that the logistics network has small-world properties. Also, the article discussed the important nodes based on the statistical indictors. Finally, compare the results with the real planning nodes level.
Wireless Sensor for Oil Leakage Detection of Depots
Authors: Yin Chao , Liu Shao Qiang , Li Yong Zhou , Chen Xiang Yong
Published: July 2013

This paper presents a low-power wireless sensor system scheme for monitoring aviation fuel leakage of depots. Based on MSP430 microcontroller and powered by a combination of lithium battery and solar energy, the system employs the photoionization detection (PID) technology to detect the oil leakage and wirelessly reports the detection results by CC2520 radio-frequency communication module. With a low-voltage PID integrated sensor and a specialized active gas-collecting device, the system can effectively measure the concentration of leakage in low power mode. Furthermore, an integrated temperature sensor is used to compensate environmental temperature influence on the PID sensor. The effectiveness analysis and power estimation of the system show that the proposed scheme is suitable for detecting aviation fuel leakage of depots.
Construction of Railway-Waterway Intermodal Transportation Network with Crunode-Line Combination Based on Path Rationalization Model
Authors: Bo Ying , Zhu Xiao Ning , Wang Dou Wei
Published: July 2013

There are limited number of ports accessing to port areas directly so far,therefore,trucks need be used to accomplish the process of the transportation from the port to the container centeral station after container arriving the port.At the same time, the container handling stations's number is limited,the specialization is in low degree and the amount of container unit train stock is deficient,above all they are the principal factors contributed to the overstock of product on ports.Therefore, it should speed up the construction of the pilot station,especially the building of railway lines directly through the port connecting the loading and unloading lines and the main railway lines, achieve the itergration of crunodes and lines in crunode-line combination network. This paper illustrate the elements of railway-waterway intermodal transportation network with crunode-line combination and construct through transportation network rationalization model based on virtual network, in addition, discuss the importance of the enterprice alliance to the development of railway-waterway intermodal transportation.
Exception Handling of Composite Services Based on Autonomic Management
Authors: Cui Ji Tao , Han Jian Hua
Published: July 2013

BPEL-based composition of Web services has become one important part of business processes, but because of the dynamic and complexity of network, it easily raises various exceptions during the execution. In order to address various exceptions may exist in execution of composite Web services process effectively; this paper proposes an effective exception handling model of composite Web services in combination of the autonomic management theories and techniques in the field of autonomic computing. This model incorporates the autonomic management element of autonomic computing to monitor the execution of composite services and to compensate or restore the business process of the composite services according to the specified policy when an exception occurs. The model enhances the exception handling autonomy while reducing the complexity of exception handling of composite services.
A Lightweight Key Management Protocol for Hierarchical Sensor Networks
Authors: Cui Yan Ling , Zhou Ju Xuan
Published: July 2013

Key Management is a fundamental security service in distributed sensor networks. The focus of this paper is to design a lightweight group key management scheme to safeguard the data packet passing on the sensor networks under different types of attacks. We propose an energy efficient level-based hierarchical system and build the secure route from the source node to sink node .We compromise between the energy consumption and the shortest path by utilizing the number of neighbors of a sensor when renewing a cluster head or choosing the next hop in the hierarchical clusters. In addition, our protocol contains group communication policies, group membership require-ments and an algorithm for generating a distributed group key for secure communication.
Adaptive Kalman Filter for INS/GPS Integrated Navigation System
Authors: Xu Tian Lai
Published: July 2013

Inertial Navigation System (INS) and Global Positioning System (GPS) are commonly integrated to overcomes each systems inadequacies and provide an accurate navigation solution. The integration of INS and GPS is usually achieved using a Kalman filter. The accuracy of INS/GPS deteriorates in condition that a priori information used in Kalman filter does not accord with the actual environmental conditions. To address this problem, an improved Sage-Husa filter is presented. In this method, the measurement noise characteristic is adjusted if and only if filtering abnormality exists, avoiding filter instability and reducing computational burden caused by adjusting noise characteristic too frequently in Sage-Husa filter. Simulations in INS/GPS integrated navigation showed improvement in positioning accuracy.
The Experimental Study of Lanthanum Bromide Detector in the Gamma Ray Imaging
Authors: Zhao Cui Lan , Li Yong Ping , Chen Li Hong , Yuan Chao , Qi Yu Jin
Published: July 2013

Cerium activated lanthanum bromide (LaBr3:Ce3+) scintillator crystal has shown very promising characteristics for high-resolution and high-sensitivity gamma ray imaging and spectrometric applications [1,2,. In this paper, we present some preliminary results of a compact gamma camera based on LaBr3:Ce3+ crystal. The detector module consists of a continuous LaBr3:Ce3+ crystal with a sensitive area of 50x50 mm2 and 5mm thickness coupling to a Hamamatsu H8500 position-sensitive photomultiplier tube (PSPMT). A compact multiplexed readout based on symmetric charge division circuit (SCD) was developed to reduce the 64 anode signal to 16 readout channels, and a resistive division network to reduce the readout channels from 16 to 4. The performance of the imaging detector module was tested using a 57Co source. The preliminary results showed that this detector module can achieve an effective field-of-view (FOV) of ~39x39 mm2 with a good intrinsic spatial resolution around 1.5mm and energy resolution of 9.2% at 122 keV.
Model and Simulation for Driving System of Four-Wheel-Drive Electric Vehicle
Authors: Xu Guo Kai , Zhang Tao , Zhao Xiu Chun , Wang Juan
Published: July 2013

Model for drive system of four-wheel-drive electric vehicle was investigated. By combing the balance equation for the vehicle movement with the equation of motor mechanical properties, a mathematical model of driving system of electric vehicle was established, PI control strategy was used for the optimal control and the model was simulated by the software Matlab/Simulink. The simulation results show that the mathematical model of driving system of the electric vehicle can represent the vehicle running states accurately.
Electric Power Steering Compensation Algorithm Research in Differential Braking Condition
Authors: Zhang Wei Rong , Zong Chang Fu , Chen Guo Ying , Li Shao Song
Published: July 2013

EPS can improve many aspects including chassis coordinated control. Aimed at eliminating the adverse effects deriving from the controlled and uncontrollable differential braking condition, this paper analyzed the EPS-based compensation system control strategy. Coordinated control of EPS and differential braking ensures the vehicle driving safety and driving comfort purposes. Based on the above research, this paper verified the EPS compensation control strategy in simulation environment.
Lagrange Stability Analysis for Power Systems with Time-Varying Delays
Authors: Wang Xiao Hong , Qi Huan , Huang Xun Cheng
Published: July 2013

In this paper, we study the global Lagrange stability for delayed electric power systems. Based on the linear matrix inequality technique, the distinguishing principle and its approach of global Lagrange exponential stability for delayed electric power systems are introduced, which are easily verifiable and have a wider application range. Meanwhile, the estimation of the globally exponentially attractive set (i.e. stable region) is also given out. Finally, an example is given and analyzed to demonstrate our results.
Signal-Planning Optimization Model for Bus Priority Signal Intersections Based on Loss Equilibrium
Authors: Long Bing , Zhu Xiao Ning
Published: July 2013

In order to equilibrate the influence of bus priority induction signal control in non-priority phases, signal timing should be optimized in the intersection. Equilibrium methods are proposed for three bus priority strategies: green extension, red truncation and phase insertion. The unsaturated intersection delay is analyzed for a single bus priority request based on linear vehicle flow arrival process, procedures of green loss and loss offset are considered to infer intersection delay formulation. The signal-planning optimal model with total passengers delay minimum and other phase vehicles passing intersection normally for restraint condition is suggested.
A Method of Automatic Voltage Optimization Control Based on Real Time Digital Simulation
Authors: Yang Yu De , Qiu Yu Sheng
Published: July 2013

With the development of smart grid, regional grid automatic voltage control (AVC) system has been widely used in power systems, but the effect is uneven, and there are not relating tools to evaluate its performance. The paper proposes a Closed-loop test method combining Real Time Digital Simulation system (RTDS) with reactive optimization procedures to simulate and optimization the status of actual grid. An optimal control scheme of the actual grid from the new method can be used to judge the advantages and disadvantages of actual AVC system. Simulation tests show online RTDS-based power system reactive power and voltage control simulation is good. It can be regard as reference to evaluate the control effectiveness of the actual AVC system.
The Simulation Research of Photovoltaic System MPPT Based on MATLAB
Authors: Yang Cun Xiang , Ma Bi , Jin Nan
Published: July 2013

In the photovoltaic power generation systems, photovoltaic battery output characteristic effect by the illumination intensity and environment temperature is very big, and has the obvious nonlinear characteristics. Therefore, it is necessary to photovoltaic battery maximum power point tracking control. This paper gives a brief introduction to the characteristics of photovoltaic battery, and puts forward an improved maximum power tracking control method, through the simulation experiments prove that the of validity this method .
Primary Frequency Control Strategy of DFIG Based on Hopfield Neural Network
Authors: Xiang Chang Ming , Gu Tian Wei , Fan Li Xin , Jiang Yi Quan
Published: July 2013

This paper presents a new method to enhance the participation of doubly fed induction generators (DFIG) effectively in system frequency regulation. A new associated control based on Hopfield neural network (HNN) is proposed to control the rotor kinetic energy and the primary reserve power of DFIG simultaneously. The proposed approach takes advantage of the learning ability of neural network to form an adaptable Hopfield neural network controller (HNNC). And the feasibility of all those control strategies is analyzed in a Two-area four-generator system based on PSCAD/EMTDC. Simulation results indicate that the proposed strategy can greatly improve system frequency stability compared with classical strategies.
HSIC Algorithm of Process Control
Authors: Niu Peng Hui , Qin Yin Lei , Qu Shun Ping , Zhang Xiao Peng
Published: July 2013

Process control objects mathematical model is difficult to establish. Based on humans thinking mode, control experience, action and intuitional reasoning, Human simulation intelligent control (HSIC) avoids all kinds of difficult problems that we are faced with as seeking the answer of complicated model or establishing brain model, and so there are some advantages for HSIC on process control. In this paper, a detailed algorithm is described for process control by using the method of HSIC. Finally, the results of practical application have proved that HSIC is feasible and effect for process control.
Modeling of Incompressible Flow inside the Involute Channel
Authors: Tao Wen , Li Peng Bo
Published: July 2013

Based on the model of circle involute scroll channel, a following coordinates was built, mathematical model was established in the coordinates. On the basis of the four basic assumptions, equations of motion for the flow field inside the involute channel was described under the N-S equations, and the boundary conditions for the model was analyzed. This paper explores the flow field inside the involute channel.
Development of High Damping Magneto-Rheological Mount for Ship Engines
Authors: Nguyen Quoc Hung , Phu Do Xuan , Park Joon Hee , Choi Seung Bok , Kang Ok Hyun
Published: July 2013

In this paper, novel configurations of a compact and high damping force engine mount featuring magnetorheological fluid (MRF) is proposed and analyzed. In the mount, a MR valve structure with both annular and radial flows is employed to generate a high damping force. Firstly, several configurations of the MR mount are proposed. The MRF flows in the mount are then analyzed and the governing equations of the MR mount are then derived based on Bingham plastic behaviour of the MRF. Optimal design of the proposed MR mount is then considered. In the optimization, the objective is to find out the optimal structure of the MR mount that can generate a maximum damping force while the off-state force of the mount is constrained in such a manner that the force ratio of the mount is greater than a required value. Performance of the optimized MR mount is then evaluated based on finite element analysis and validated by experimental results.
Using LOG Method to Measure Errors of Mobile Robots' Location
Authors: Tsung Tsing Tshih , Chang Yu Chieh , Chen Tien Li
Published: July 2013

This paper presents an innovative Method to Measure Errors Of Mobile Robots Location. The innovative method is composed of a Laser pointer with Optical cross mark and a Grid paper (LOG method). The errors of a mobile robots location are included the precision and accuracy of the translation and rotation. Using the measured errors, the performance of a mobile robot can be evaluated. The Mecanum wheel is a conventional wheel with a series of rollers attached to its circumference and can move in any direction. In this research, the three encoders are used on a mobile robot with three Mecanum wheels. The three Mecanum wheels are mounted on the robot round frame as a base of the moving platform. Mecanum wheels are independently powered using three units of precisian gear DC motors and the wheel/motor assemblies were mounted directly to the robot round frame. The slip occurs always by the rollers attached to conventional wheel's circumference. The force modeling and the innovative evaluating system for the precision and accuracy of the translation and rotation is focused on this research. By using a laser pointer with cross optical mark and a sheet of mm grid paper on the mobile robot, a fast and stable testing set up for the precision and accuracy of the translation and rotation is build. Through LOG method, and according certain testing process the precision and accuracy of the translation and rotation of a mobile robot can be fast evaluated and analyzed, respectively. The experiment result shows that the mobile robot moves sideways the distance from 0.25m to1.5m at the speed 1m/s fast, stable and easily to finish. The error of translation and rotation of the mobile robot can be fast determined respectively. And the performance of a mobile robot can be fast evaluated by every run at the stop localization immediately.
Analyzing of the Image Characteristic Base on Potential Field Distraction Function
Authors: Shan Ze Biao , Shi Yao Wu , Li Hong Cheng , Shi Hong Wei
Published: July 2013

A new definition of potential field distribution function of image was proposed, and the characteristics of the distribution function were analyzed. Distribution function of potential field represents whole fluctuant information of image. So it can be used to analyze the image characteristics. Potential field of image background is weak and correspond to Gaussian distribution. Low stage of potential field distribution function can be used to evaluate noise level of image. Inflection point of the amplitude distribution function of potential field represented the transition point between the background and the actual edge in potential field image. So value of this point can be used as the threshold value to identify edge. When object distance of microscope changes, the edge comes more and more clear, and the edge area judged by the method above will be bigger and bigger. This character can be used to instruct auto-focus process.
The Adaptive Stochastic Resonance Signal Detection System Based on the Multi-Point Random Search Algorithm
Authors: Tu Shui Lin , Wu Zheng Yang , Wu Zhen Yi
Published: July 2013

A model of adaptive stochastic resonance system based on the multi-point random search algorithm is proposed, and a weak signal detection system of adaptive stochastic resonance is established on the LabVIEW development platform. In this detection system, the typical nonlinear bistable system is used as the core of signal processing, and the system output signal-to-noise ratio is chosen as the optimizing objective function. The system structure parameters can be adjusted adaptively by using the multi-point random search algorithm, on which the optimal state of stochastic resonance of the system can be remained and the frequency of the weak signal can be obtained. Influences of the system parameters and the Gaussian noise on the stochastic resonance can be detected by this system. Experimental results show that this detection system is efficient, and has potential applications.
EMC Measurement in a Reverberation Chamber
Authors: Rhee Eugene , Lee Ji Hoon
Published: July 2013

A reverberation chamber, which is a test facility for various electromagnetic compatibility tests, uses a stirrer to generate a uniform electric field inside it. However, a stirrer is a big unit and has difficulties in maintenance. This paper adopted an idea of a diffuser from acoustics to overcome the problems of a stirrer and presents a substitution effect of a diffuser for a stirrer. To validate the substitution effect of a diffuser, a diffuser and a reverberation chamber for 3.0-5.0 GHz band are designed and fabricated. And the real measurement for analyzing the electric field uniformity in a reverberation chamber is done. The measurement results show that the reverberation chamber with a diffuser satisfies the international standard requirement.
TCM Main Drives Revamping of Pangang
Authors: Wang Li Hua , Huang Kun , Zhou Rong Fu
Published: July 2013

To study how to do, if adapting a Adjustable-Speed AC Drive System to control the equipment, now which is been controlled by the Adjustable-Speed DC Drive. According the operating parameters that requested by the production line of the Cold Rolling Mill of Pangang, the paper proves a revamping project. The project includes the selection of motor, the calculation of the electrical capacity of motor, and the selection of speed-control mode. Also the paper analyses and put forward to the revamping project of related supporting facilities.
The High Precision Blade Electrochemical Machining Simulation and Cathode Optimization Based on Isogeometric Method
Authors: Xiang Ying , Mo Rong , Wan Neng , Qiao Hu
Published: July 2013

The simulation and optimization of electrochemical machining is an important means to improve processing quality. However, the fragmented nature of geometric modeling and numerical analysis model, restricts the application proportion. Aiming at this problem, it is refined that the scientific problem of coordination modeling between CAD and CAE based isogeometric method. In this paper, the unified model is established based NURBS basis functions to solve the problems that the geometric parameterization and the infliction of boundary conditions. And the optimization efficiency is promoted by improved optimization model using the convex hull characteristic of NURBS basis function. At last, a confluent design method is realized for the blade electrochemical machining process.
Research on Controlling Method of High-Power Electromagnetic Transmitter Power Supply
Authors: Yu Fei
Published: July 2013

High-power electromagnetic transmitter power supply is an important part of deep geophysical exploration equipment, especially in complex environments, where how to control the high accuracy and stable output of the power supply as well as the redundancy safety of the system become the key issue in its designing. A triple-loop control including inner current loop, outer voltage loop and load current forward feedback and a digitalized voltage/current sharing control method are proposed for the realization of the rapid, stable and highly accurate output of the system. System simulation and field geological exploration experiments demonstrate the effectiveness of the control method which could ensure both the systems excellent stability and the outputs accuracy.
Computer Virtual Simulation System of High-Voltage Live Working Robot
Authors: Wang Ying Jian
Published: July 2013

The high-voltage live working robot is a special-type robot developed recently and has a huge potential for development due to the complexity and diversity of tasks as well as the demanding and dangerous operating environment. The application of virtual reality technology in the robot field enables the complex movements to be reproduced in the virtual simulation system, which could either test the rationality of robots structural design, or train the operators. To solve this problem, the 3D simulation system of high-voltage live working robot is designed and developed to provide a virtual research platform for the R & D personnel to study robot manipulator motion as well as the virtual training platform for robot operators.
Effect of the Heat Input in the Transformation of Retained Austenite in Advanced Steels of Transformation Induced Plasticity (TRIP) Welded with Gas Metal Arc Welding
Authors: Lopez Victor , Reyes Arturo , Zambrano Patricia
Published: July 2013

The effect of heat input on the transformation of retained austenite steels transformation induced plasticity (TRIP) was investigated in the heat affected zone (HAZ) of the Gas Metal Arc Welding GMAW process. The determination of retained austenite of the HAZ is important in optimizing the welding parameters when welding TRIP steels, because this will greatly influence the mechanical properties of the welding joint due to the transformation of residual austenite into martensite due to work hardening. Coupons were welded with high and low heat input for investigating the austenite transformation of the base metal due to heat applied by the welding process and was evaluated by optical microscopy and the method of X-Ray Diffraction (XRD). Data analyzed shows that the volume fraction of retained austenite in the HAZ increases with the heat input applied by the welding process, being greater as the heat input increase and decrease the cooling rate, this due to variation in the travel speed of the weld path.
Research for Signal Processing of Automotive Anti-Lock Braking System
Authors: Tian Yu Dong
Published: July 2013

The anti-lock braking system is an important part of automotive electrics, and relates the automobile safety performance. To aim at the strict signal control problem of the brake power in the anti-lock braking system, the automotive anti-lock braking system working principle is analyzed, and an experiment of automotive anti-lock braking system signal processing based on electrical mechanism was advanced. Then, the modeling structure, data and test of automotive anti-lock braking system signal processing applied four-wheel speed sensors were particularly presented. Finally, the experimental results proved that it was fast and accurate, and provided the suitable gist of automotive anti-lock braking system control at the view of application.
Research of Customer Service Monitoring and Command System in Electric Power Engineering
Authors: Yue Han Bing , Zhao Fang
Published: July 2013

According to the actual situation of electricity supply services,and problem of service work and analyze the causes. The article proposed the establishment of a monitoring command system platform; it has Marketing, supply and distribution, newspaper assembly business, video surveillance of the operating room, 95598 call center systems, interactive information system services, GIS system services for the integration of monitoring services. Construction of this system will greatly enhance the efficiency of customer service, to enhance the overall level of service for electric power enterprises have a reference.
Study on Coal Performance Influence Based on Input-Output Model
Authors: Xu Chao , Zhao Lian Zhen , Wang Kai
Published: July 2013

As a basic industry, the coal industry has greatly associated with the development of national economy. The coal industry has a tight association with the development of national economy. This paper calculates the direct consumption coefficient and the complete consumption coefficient among coal industry and other national economy sectors in an input-output model based on the Input-Output Tables of 2007, and analyze the reaction of each sector to coal price fluctuation. The results show that most of the top ten are industry sectors, and the sector which is the most influenced one is industry of production and supply of electric power and heat power. If the coal price rises by 10%, this sector will accordingly rise by 1.79%.
Study on Sustainable Integrated Program of Dump Open Pit Optimization
Authors: Chen Chao , Gan De Qing , Zhang Ya Bin , Lu Hong Jian
Published: July 2013

According to the various influencing factor of the dumping plan choice, the fuzzy comprehensive evaluation model is built up, which is based on the fuzzy mathematics theories, the dumping plan is optimized. And take a mine as an example, the tool of computer aided design is used to rebuild the dumping plan, and great economic benefit is obtained.
Research on Green Hotels Based on Green Materials
Authors: Su Bo
Published: July 2013

While the hardware of the domestic hotel has reached the international first-class, there is still much room left in software and benefit level at present. According to the outlook on scientific development and the requirement of sustainable development, we have to face up to the problem of the lack of environmental protection in the course of hotel construction in the tide of global competition. The author puts forward some problems in the transition process from the traditional hotel to green hotel. The author also gives corresponding countermeasures to solve the problems in the hotel industry through the explanation of the green hotels.
Sports Equipment Based on High-Tech Materials
Authors: Tao Song
Published: July 2013

This paper briefly introduces the application of new materials in sports and effect on sports performance, points out that in the development of competitive sports in the process, must pay attention to the development and utilization of new materials, development.
Research of P2P Traffic Real-Time Monitoring Technology Based on DPI
Authors: Yi Yan , Su Zheng Yuan , Zhao Qing Jiang , Dai Zu Cheng
Published: July 2013

As the P2P technology brings an abundance of network shared resources and information services, P2P technology also brings a lot of bandwidth, intellectual property, information security problems. Against the problems, and studying technologies of P2P traffic flow monitoring, the paper presents an improved P2P traffic monitoring method based on advantages and disadvantages of current P2P flow monitoring methods. According to the test results, the system achieved well in the demand of control P2P traffic.
Mineral Information Extraction Using Hyper Spectral Remote Sensing Technology
Authors: Zhang Han
Published: July 2013

Based on the hyper spectral data provided by small satellites for environmental hazard monitoring and forecasting (HJ-A), we convert the data format and reflectance to remove possible interference. Spectral angle mapping method is employed afterwards for mineral mapping of the study area. The small-scaled mineral distribution map is then generated for the whole study area. Our study suggests that mineral mapping using HJ-A satellite hyper spectral data is fairly effective in terms of mapping quality and cost.
Printing Defects Detection Based on Two-Times Difference Image Method
Authors: Guan Yan Yan , Ye Yi Cheng
Published: July 2013

With an aim at printing quality on-line detection, a method based on two-times difference image algorithm was proposed. Firstly, a standard template image and a gray threshold value image were calculated by using statistical methods. Secondly, an abnormal spots image was obtained through two-times difference image of the detection image, the standard template image and gray threshold value image. Lastly, the defects can be detected by analysis of connected region of the abnormal spots image. The results demonstrated that the problems of false detection and omission detection due to edge of image can be solved effectively, and the detection accuracy can be improved through this method.
Earthquake Disaster Assessment System
Authors: Zhu Geng Qing , Xu Jian Dong , Huang Hong Sheng
Published: July 2013

The development of Web Service technology provided an innovational way for data sharing and system integration. The Service-oriented architecture (SOA) dedicated to solve the data operating and sharing between heterogeneous systems. In this paper, an earthquake disaster assessment system was built on the SOA point of view. It integrated the GIS operation and the Web Services for data accessing. With the integration of the services from outside of the system, several of data was available for mapping. The system was used in earthquake emergency response. With the usage of the data from the different system, the earthquake disaster assessment model worked more effective.
Measurement of Moment of Inertia for Flywheel of Bicycles
Authors: Tang Jun , Wang Shui Sheng , Zhang Zhi Gang
Published: July 2013

To determine the moment of inertia for the flywheel of the exercise bicycles, its example model and testing method are introduced, and also a testing system according with the international standard and having the ability to test the moment of inertia for the flywheel of the exercise bicycles is designed. The feasibility of this testing system has been verified by practices.
Optimized Vehicle Scheduling Algorithm of Distribution Center
Authors: Wang Zhu
Published: July 2013

This thesis goes deep into the vehicle scheduling problem (VSP), which is the key problem for the distribution center.This paper analyzes and optimizes the mathematical model of vehicle scheduling problem. The problem of dynamic vehicle scheduling with time windows is described in great details in the thesis, which also gives an arithmetic solution aiming at the scheduling problem.Finally, based on the research results and under the background of logistics distribution enterprises, the vehicle scheduling algorithm is exposed to experiment.
The Study on Wireless Video Monitoring System Based on SOPC
Authors: Xu Jian Ming
Published: July 2013

In order to investigate the system performance, its necessary to select an even background point target as the imaging object. The system realizes the real-time sampling, processing and displaying infrared image through joint debugging the SOPC processing system. SOPC is a flexible and effective SOC solution because of its flexibilities of system design, reduction, extension, upgrading, etc. And its hardware and software system are programmable. We present and develop a wireless video monitoring system based on SOPC in this paper, and the system benefits the production of infrared imaging sets of higher performance, lower power consumption and smaller size.
Research of Mine Personnel Positioning System Based on ZigBee
Authors: Wang Chen Guang , Cui Jian Ming
Published: July 2013

Aiming to improve current miner location system in underground mine, we design a Zigbee wireless network to locate miner and transmit location information.This system using wireless location engine CC2431 chip and RSSI location algorithm can collect mine gas information and analyse data, which has a good reliable and real-time characteristics. Accurate information would be provided to rescue team timely.
Research of Intelligent Traffic Management System
Authors: Fang Dan Yu
Published: July 2013

With the growing economic level and the continuous development of information network technology, as well as the continuous improvement of people's living standards, transportation demand gradually increased. Due to the current transportation system in China has been facing the problem of traffic congestion and inefficient, and cause serious pollution and energy shortages, and intelligent traffic management system is the key to solve these problems, the modern information network technology and transportation combined. This article gives a brief introduction to the development and study of the status quo of China's intelligent transportation management system, intelligent traffic management system architecture of CORBA and CORBA, and described the implementation of an intelligent traffic management system based on CORBA.
Multi-Scroll Chaotic System Based on Even-Symmetric Step-Wave Sequence Control
Authors: Tang Zi Long , Yu Si Min
Published: July 2013

This paper presents a new approach for generating multi-scroll chaotic attractors. First, a new double scroll chaotic system with piecewise linearity and invariance under the transformationis introduced. Then, by using the even-symmetric step-wave sequence switching control method in this system to extend the number of saddle-focus points of index 2, the intended multi-scroll chaotic attractors can be obtained. A circuit for generating multi-scroll chaotic attractors is designed, and the experimental results are also given, confirming the consistency of the theory design and circuit implementation.