bluuebunny/crossref_metadata_2025 huggingface dataset:
A Scheme to Address Routers in MIMO Triangular Wireless Overlay Mesh
Authors: Cao Zhan Mao , Zhang Yuan Ping , Shan Zhi Long , Jiang Yun Cheng
Published: September 2013

A scheme to address router nodes is given for wireless Mesh Networks (WMN) with multiple input multiple output (MIMO) character. Both the wireless transceiver number of a node and geographical topology mesh contribute to wireless overlay model by placing link into different channel planes edge in case of interference. The triangular mesh is an important overlay topology for wireless networks. The router node addressing scheme keeps its instinct symmetric property. Several general cases over the addressing scheme are also discussed for the shortest routing path and the node coordination itself. The interference relation is abstracted into set models. Furthermore, the length of the shortest path is also given by a formula with the source node and destination node addresses. A general conclusion on relation of node address and hop count is also given.
A Constructed Method of the Hash Function for the Rough Relational Databases
Authors: Wei Ling Ling , Yang Wei
Published: September 2013

Rough relational database model provided a processing method for uncertainty data, So based on the Hash technology and the data characteristic of rough relational database, it was researched the multiple value data item in the rough relational database represented by binary string in virtue of equivalence classes, calculated its decimal value, and constructed Hash Function. Then according to the decimal number distributed Hash address where stored the data of the rough relational databases. Finally, an algorithm for constructed method of Hash function for the rough relational databases was described and illustrated by an example,and proved the method is validity and practicability.
The Data Fusion Survivability Analysis Technology of Wireless Sensor Network
Authors: Zhang Le Jun , Deng Xin , Guo Lin , Zhang Jian Pei , Li Hong Bo
Published: September 2013

This paper presents the data fusion survivability analysis model of wireless sensor network (WSN) based on stochastic Petri net (SPN). First, the definition of data fusion survivability is put forward, and the data fusion model of WSN is constructed. Second, the SPN modeling method of security events, which influences the WSN, is described. Lastly, simulation experiment proves the correctness and effectiveness of the modeling of WSN data fusion survivability analysis based on SPN. This model can provide the theoretical basis and guide for designing a survivable WSN.
Heavy-Duty Optimized Database System for Difficult-to-Cut Materials
Authors: Liu Ming , Ding Ming Na , Liu Xian Li , Zheng Wen Juan , He Geng Huang
Published: September 2013

Large cylindrical shell is typically difficult to machine parts, and the cutting process of the bulky cylindrical shell is complicated. Through the actual requirements and conceptual design, the paper establishes the heavy-duty optimized database system for difficult-to-cut materials in order to improve its surface quality and production efficiency. The system is completed by combining Visual C++ 6.0 and SQL Server 2000.This paper mainly describes the implementation process and related interfaces of the data optimization and heavy inserts design. The data from optimization and tool design function block are validated its reliability by experiments and simulations, which proves that the system can be used for actual production.
Research on Optimization Method of Real-Time Available Resources for Dynamic Scheduling
Authors: Ge J.H. , Li W.Y. , Shi Y.P. , Duan T.Q. , Chen Y.Q.
Published: September 2013

Aimed at the real-time request of dynamic scheduling to product resource, an optimization method of parallel dynamic chain real-time available resources was put forward. Proceed from real-time tracing of resource information influencing scheduling tasks dynamic property, established a resource informations real-time tracing back and optimization model, which used module and parallel process mechanism to different kinds of real-time traced back resource information. The mechanism processed global dynamic feedback tracing for every module and optimized available resources primarily, on this basis, graded the primary available resources and gave a real-time candidate resource set. Through one example of one gear production scheduling, the methods validity was tested.
Study and Application of Data Stub in TD-LTE
Authors: Li Qiang , Jin Xi
Published: September 2013

LTE (long term evolution) and its advanced technology have become a research focus of worldwide mobile communication development. This paper mainly proposes a method of data stub which can be used to speed up the development of TD-LTE equipment. Through analysing and implementing the complete TD-LTE access procedure, we find it is feasible that the development, debugging and verifying protocol signaling procedures are carried out by data stub in parallel. That can accelerate the project development schedule and promote the combination of software and hardware as early as possible. In the process of TD-LTE eNB development, comparing with the method of traditional serial development and debugging, we have shortened nearly half of the time taken to develop and debug TD-LTE attach procedure by data stub.
Digital Library Resources in Grid Environment Organization Model
Authors: Zhai Ying Xin , Liu Xiao Feng
Published: September 2013

Digital library resources in the grid environment, effective organizational work to prepare the service of the grid system, the user access to information base. Grid resource heterogeneity, distribution, dynamic characteristics, the paper constructed a global / local layered digital library resources organizational model, this mode to avoid the blindness of the resources found to shorten the resources to find time, through constant monitoring of local resource server, so that the search results according to specific rules arranged, greatly improving the utilization of resources to effectively improve the performance of the grid system
Discussion on the Computer Security Technology and E-Commerce Transaction Security
Authors: Shang Qing Yun
Published: September 2013

A notable feature of the modern society is the producing, processing and more and more frequent alternating of information. As its hardware supporter, computer is deepening into every corner of the society. At the same time, the wide application also brings a major and practical problem-- computer security. So how to guarantee the smooth process of electronic commerce on the premise of computer network security, i.e. the implementation of e-commerce confidentiality, integrity, authentication, unforgeability and non-dependence becomes even more important.
Connectivity Calculation Method of the Simulation Entities Based on Geographical Information Grid
Authors: Li Feng , Wan Gang , Zhang Zong Pei , Liao Jin Min
Published: September 2013

Geographical information grid can not only manage geospatial data, but also can manage the spatial distribution of 3-dimensional simulation entities. Using geographical information grid technology could divided the earth into different resolution of global series of geographic grid, registering the grid according to the geographical coordinates and technique index of simulation entities, building space position relations between entities, , improving the computation efficiency of connectivity test of simulation entity based on geographic grid simulation entity beforehand.
Research on Traffic Management-Oriented “Big Data” and its Application
Authors: Xu Wei
Published: September 2013

Big data is the new revolution of global development, the coming of the big data era puts forward new challenges on the data control ability of traffic managers, and also provides unprecedented opportunities to better enhance the level of traffic management. This article first gives the concept and application prospect of big data, in combination with the traffic conditions of Shenzhen, proposed several methods of collecting data; according to the application and practice of big data technology in Shenzhen, put forward application of big data technology in traffic management.
Study of the Wireless Sensor Networks Radio Frequency Signal Loss Based on Different Planting Density Corn Environment
Authors: Li Tai Hao , Pan He
Published: September 2013

In order to rationally arranged cornfield wireless sensor network nodes, fields of corn are studied in the loss of signal of 2.4GHZ wireless sensor radio frequency signal, and selecting 3 levels of planting density carries out the field random test with the transmission distance and antenna height as influencing factors, environmental impact factors and antenna height exist linear relationship, establishing the mathematical model.
A Yacht Navigation Embedded System Based on the Qt
Authors: Yan Xin , Wang Kang Nian , Xiao Zhou Ming , Liu Hong Yun
Published: September 2013

Due to the high speed of yacht, an emergency meeting will be easily caused in the complex sea environment. So it is important to the safety management of yacht. This paper designed and realized a navigation system of cruise yacht based on Qt using embedded, GPS and 3G technology. The advantage are low development cost and easy operation.
Research on the Internet of Things Network Experiment System Based on Virtual Instrument Technology
Authors: Zhao You Gui , Li Cheng Yong , Huang Yan
Published: September 2013

Aiming at the condition that laboratory instrument resource can not meet the demands of experimental teaching,management and upgrading because of shortage, decentralization, obsolescence and aging, therefore, a design proposal of network experiment system based on Lab VIEW is presented. The data transmission of tree modules which are virtual instruments, simulation and real time measure is achieved with application of Data at Socket technology and Remote Panels technology. Practical application shows that this system can reduce attrition rate of machines and improve the utilization efficiency of instruments and it has some other advantages including short development period, low cost, good compatibility, good extensibility and easy update for equipments. The network construction based on virtual instrument technology has broad prospects in industry and scientific experiment.
Application of Integrated Neural Network Information Fusion in Fault Diagnosis of one Missile Launching Control Unit
Authors: Cheng Xu De , Wang Hong Li , Xu Bing , Xue Xue Dong
Published: September 2013

Research and development of fault diagnosis system in application of integrated neural network information fusion is based on information fusion technology, with which preliminary analysis of equipment fault is made in different perspectives in terms of neural network, so as to identify the fault on the basis of fusion outcome. This technique is applied in fault diagnosis of one type of missile launching control unit, leading to sufficient use of various information and substantially increased fault diagnosis rate.
Design and Implementation of the Relay Gateway Driver Software Based on AudioCode Chip
Authors: Xu Yan Wen
Published: September 2013

In order to solve the problem of the PSTN network and IP network interconnection, in the study of digital relay server-driven software system architecture based on low-level driver software point of departure from the digital relay server, the proposed media and letter between the two networksso that the signaling conversion server communicate with each other, in order to achieve the signaling protocol conversion between the two networks; design of a digital relay server to complete media conversion between the two networks, the interconnection between two networks.
Application of Virtual Reality Technology in Civil Engineering
Authors: Qin Yu Ping
Published: September 2013

The virtual construction is achieved in the virtual environment, and the virtual reality technology is the core technology in the virtual construction system. The virtual reality technology is a high-tech information technology which integrates the artificial intelligence, the computer graphics, the man-machine interface technology, multi-media industrial architecture technology, the network technology, the electronics technology and the mechanical technology. The technology aims to utilize computer hardware, software and various sensors to create a virtual environment integrating vision, hearing, touch and smelling, which makes users immersive in the environment. The operators are immersive in the environment and interact with it, obtain sensory stimulation through various media, and gain clear and intuitional understanding of the problems to be solved.
Research on the E-Commerce's User Experience Evaluation Model
Authors: Liu Xin Xiong , Liu Qing Yun , Wang Wei , Huang Cong Mei , Li Wen Si
Published: September 2013

Firstly, the current situations of E-commerces user experience evaluation model were analyzed. And then, fuzzy comprehensive analyses were introduced. After that, an improved E-commerces user experience evaluation model based on fuzzy comprehensive analysis was established. In improved model, user experience hierarchy model was created based on psychological-stratification, experts fuzzy evaluations of evaluation factors were integrated into fuzzy matrix by using the theory of Triangular Fuzzy Numbers. Finally an example is given to show the rationality and the effectiveness of the method.
The Evaluation Model Analysis on Credit Crisis Based on Data Mining and Nonlinear Regression Method
Authors: Yang Ai Wen
Published: September 2013

As a result of government's macroeconomic regulation, some regions of China have suffering financial disturbance,which makes some small enterprises close down because of capital chain rupture.The guarantee industry is an part of the construction of social credit system, and its survival and development are a very serious challenge now.Medium-sized enterprise security crisis which happened over the past two years in Zhejiang province is overall analyzed in this paper.This paper digs out its internal factors which mainly reflect in two aspects,and analyzes two primary causes why security crisis happens by using mathematical model.And it puts forward corresponding measures to solve the credit risks in order to provide feasible suggestions for ensuring the safety guarantee.
A Food Management System Based on IOT for Smart Refrigerator
Authors: Hou Rui Chun , Wang Xi , Wang Xiao Ying
Published: September 2013

With the rapid development of information technology, all kinds of smart home appliance has appeared. Smart refrigerator is one of them. In this paper, a food management system for smart refrigerator is proposed, which is based on the Internet of Things. This management system could collect the food information in the fridge and analyze the user's preferences. Shopping list and recommended recipes could be generated and sent to user. It provides users with a more personalized service, improve the user experience.
Survey of the Tools for Web Service Testing
Authors: Hussain Shariq , Wang Zhao Shun , Toure Ibrahima Kalil
Published: September 2013

Web services technology is becoming increasingly ubiquitous and gaining rapid adoption due to its support for integration of distributed autonomous components. Testing is necessary to assure the performance and functional correctness of web services. Many commercial as well as opensource tools are available today for web service testing. In this paper, we present results of a brief survey of web service testing tools. The study will provide an informative overview and may help in selection and use of appropriate testing tools.
Track Irregularity Simulation of Rubber-Tired Light Rail Transit
Authors: Zhao Jia Jian
Published: September 2013

By analyzing the difference between the vibration excitation sources of rubber-tired Light Rail Transit (LRT) and those of traditional drum-rail transit, the upper and lower limits of spatial angular frequency determined by the bridge vibration wavelength range were discussed, and the track irregularity samples of train-bridge space-coupling system for rubber-tired LRT were simulated by the trigonometric series method. The results show that 1.6m~80m bridge wavelength range can meet the needs of the train-bridge spatial vibration analysis. And the simulated track irregularity samples referring to the sixth grade track irregularity Power-Spectral-Density (PSD) of U.S. railways can be used as the vibration excitation sources of the train-bridge spatial vibration analysis of rubber-tired LRT.
Research on Fault Diagnosis Theory and Key Technology for Power Machinery
Authors: Zhang Hong , Zhang Shou Sheng , Wang Jun Jie
Published: September 2013

Based on the disadvantages of the original LMD algorithm in terms of smoothing method and end effect, this paper puts forward to a method of diagnosis of rotor system faults based on the improved LMD and singular value decomposition. The PF component obtained after applying the improved LMD method is able to separate the aliasing modes while maintaining the natures and features of the original PF component. Thus, the systems real information can be grasped more effectively. According to the experimental analysis, this method can be applied to diagnosis of rotor system faults effectively.
Research on Float Adjustment Simulation System of FROV
Authors: Jiu Hai Feng , Pang Shuo , Han Bing
Published: September 2013

At present, with the increasing development of ocean exploitation, ROV has been used in many aspects such as scientific research, military affairs and assistance, as a result many countries around the world get more value from the research work on ROV. The FROVs (Fiber Remotely Operated Vehicle) float station usually has an important influence on its performance. The purpose of this paper is to do some research on the adjustment of the FROVs float station, and to design a float station adjustment simulate system based on FROV.
Study and Simulation of the Cutting Platform Following System of the Combined Sugarcane Harvester
Authors: Xu Li Ping , Zhang Liang , Ren De Zhi
Published: September 2013

In the rugged topography of sugarcane field, to make the cutting platform keeping a setted height off field surface is one of the technical problems which combined sugarcane harvester is confronted with. Through studying the sugarcane field condition and cutting platform following system of combined sugarcane harvester, designed a type of cutting platform following system based on electro-hydraulic proportional technique, and simulated it with AMESim software.
Power Demand of Electric Bus Charging Station Modeling and Influence Factors Analysis
Authors: Zhang Xi Yu , Li Qiu Shuo , Tao Shun , Xiao Xiang Ning , Zhao Bing Qiang
Published: September 2013

With the accelerated pace of the electric bus, the growing charging power demand will have a certain influence on the grid. As a precondition of safety operation for power grid, studies on electric bus charging load model are also the theoretical basis of electric bus charging orderly. Firstly, based on the analysis of arriving time and state of energy, power demand model of electric bus charging station was set up. According to this model, electric buses charging station power curve within a day was calculated and presented with the operating data in a demonstration electric bus charging station. The results of the simulation examples show that the modeling method of the charging power demand model is effective.
The Explicit Solution to Calculate Maximum Upsurge in Water Chamber Surge Tank under Superposed Condition
Authors: Li Gao Hui , Jiang Hong Jun , Zhang Jian , Chen Sheng
Published: September 2013

The explicit solution to calculate maximum upsurge in the water chamber surge tank when load rejection at the worst instant followed by load acceptance has been derived. Comparison is made between explicit solution and the numerical solution by means of the fourth order Runge-Kutta method, and the results show that the derived formula is more convenient for calculation and the precision is high. Therefore, the formula proposed in this study is of great value in practical engineering.
The Reliability Modeling of Marine Power Station
Authors: Wu Zhi Liang , Yao Yu Bin , Wang Dan
Published: September 2013

Through the prediction based on reliability counting method, identified weak links of automatic control system, achieved the reliability modeling of marine power station and structured reliability block diagrams and the reliability mathematical models, the reliability and mean time between failures (MTBF) of marine power station are obtained under different work conditions. The marine power station reliability modeling acquired from different work conditions accords with the actual operating mode, and all these work can supply more scientific theoretical support for study on reliability of marine power station.
Review on Node Modeling Method of Wind Farm in Power Flow Calculation
Authors: Liu Jin Long , Zhao Fei , Liang Zhi Rui
Published: September 2013

Node modeling of wind farm in power flow calculation is an issue which must be solved. This paper described mathematical model of asynchronous generator which be used widely, elaborated mathematical model and calculation process of several wind farm node models in power flow calculation, discussed calculation speed and accuracy of every model and pointed out that under the premise of high level calculation speed, how to add wake effect to power flow calculation process will be a significant direction for wind farm modeling studies.
A New Measuring Method of Tension in Cable and its Experimental Verification
Authors: Wang Gong Wen , Sun Wen Bo , Zhou Wei Jian
Published: September 2013

Based on elastic criterion and regular connection of cable, a new measuring method of tension in cable is introduced in this paper, together with a confirmatory test for this method. The result indicates that this method has many advantages, such as simple principle, high accuracy, good repeatability, remarkable stability, simple operation and wide application.
An Attitude Stabilization Method for Quadrotor Helicopter Using Brushless Motors
Authors: Jing Fang , Tan Li Ning , Wang Di , Zhang Ting Ting
Published: September 2013

It is an important practical design problem for control system design of quadrotor helicopters with accurately actuator modeling, which is not mentioned in many previous works. In order to improve the performance of attitude stabilization control system, a new strategy is proposed in this paper. This control strategy is based on the accurately nonlinear modeling of the brushless motors using the Hammerstein series models. Furthermore the identification method to obtain such models from observed input-output data is presented. After models of four brushless motor are obtained, a backstepping attitude controller is designed to stabilize the quadrotor helicopter. Flight experiments show that the proposed control strategy can achieve higher performance than past ones.
The Application of SOPC Technology in the Motor Driving Control of Electric Motor Car
Authors: Zhu Gang
Published: September 2013

Along with the development of advanced control system, in order to achieve the goal of low energy consumption, low pollution and high degree of automation, the coordination matching work of the motor driving electric motor car and the car body has a better future. By using GW48 hardware development platform and the SOPC technology of nuclear NiosII in FPGA as the central processing unit, and with the aid of the Avalon the peripheral circuit of the motor driving electric motor car is completely under control. This is a improvement of the classic control of the motor (i.e. based on single chip or DSP motor control). This article introduces the design method of the drive control system for electric motor cars. A function module design is conducted for the hardware part, which includes the PWM module and control module, and the PWM module and the VHDL language program is used to form the interface function module. A overall design discourse is conducted for the the software part, design processes of each function module are expounded in this paper. Finally the experimental results are given and they have been analysed. The experiment proves that the precision of SOPC technology in the application of electric motor drive control is high and the application is reasonable. It may become the trend of the development of the electric motor cars in the future.
Research on the ICU Heart Rate Monitoring Based on the Markov Model
Authors: Wang Fang
Published: September 2013

Every minute heartbeat cycle number is vital important signals, the vital signs of ICU patient are an important reference index that is diagnose and treated by doctor, and heart rate monitoring is very important work in ECG monitoring. First of all, the generation and development of the Markov model are introduced, and the analysis of ICU heart rate monitoring, on this basis, to build intensive care heart rate monitoring analysis model based on the Markov model, so as to get scientific heart rate estimation and to provide data support for physicians comprehensive analysis, and to a certain extent, to provide a theoretical support and practical new method for this field research.
The Empirical Research on Automatic Control System of Training Information
Authors: Jin Chuan , Wang Xiao Mei , Yang Ke Liu
Published: September 2013

At present, basketball training needs more scientific training methods and techniques. In order to obtain these training methods, it needs to acquisition training information in the process of basketball training. Therefore, in view of basketball training to establish information control system, research on basketball players training characteristics and the law of motion in the process of basketball training, using control theory method to carry out information processing and analysis, and then the use of scoring methods carry out the authority score evaluation on basketball trainings influencing factors, according to the weight values, these are obtained on the basis of the score, then to carry out add sum, finally to obtain the evaluation scores of basketball training information control system. And then according to the weight value, to undertake an analysis of the basketball training control process, the basketball training information control method is put forward. The analysis results show that information control system is mainly manifested in the basketball training information collection and transmission, training scheme decision of coaches decision system as well as the feedback of decision information, which will complete the whole system construction of basketball training information control.
The Application of Wireless Security Communication in the Industrial Automation and Control
Authors: Wang Feng Hua
Published: September 2013

Based on the wireless to realize the industrial automation, and now this is the field that people daily concerned about, but also is the hot issues of research of the community and even academic. The study of standardized wireless networks for industrial applications is more based on the Zigbee research methods. In this paper, we try to increase the combining of these new design technology and industrial automation of wireless standards. Wireless based on the PC can be applied in the micro and macro industrial by using Zigbee network; it has a variety of different types of processors and microcontrollers. Microcontroller relates to the temperature sensor, the zero crossing detector and voltage regulatory agencies. The system can completely control them through visual-based GUI (graphical user interface of the PC). The graphical user interface is the applications program based on the user-developed. All processors and controllers are interconnected PC through Zigbee. The PC will continue to monitor all the data structure unit and compare value from remote processing preloaded process. If you find any error, computer will take the necessary action. Zigbee network is also the star topology structure that tries the four nodes. The first Zigbee is connected to the personal computer, it has fully functional device, its role is transmitting and receiving the data of other nodes. The second, third and fourth of the Zigbee have device that can reduce function, and they are used to control the rotational speed of the DC motor, have separate control of the temperature and the lamp lighting. It can interconnect all processing unit of Zigbee through the RS232 protocol.
Study on the Working Stability Control for the Vacuum Feeding Device Based on LS-SVM
Authors: Guan Li Ming , Lu Chen , Tian Jia Xing , Zhang Wei
Published: September 2013

In this article, the LS-SVM model was established against the working stability control for the vacuum feeding device. Based on the experimental sample data, the learning and training was performed. The actual operating results of the control system proved its efficiency and reliance.
Realization of a Modeling and Simulation System for MID Laser Direct Structuring Equipment
Authors: Hu Wen Juan , Zhuo Yong , Wu Xuan , Lan Guo Wei , Zhao Xin
Published: September 2013

The LDS is the most advanced and efficient technology in the MID (molded interconnect devices) electromechanical integrated device manufacturing technology. In this paper, the key technologies about modeling of LDS equipment, kinematic analysis of the machine system and optical system and how to combine them to achieve simulation were introduced, the MID modeling and simulation system for LDS equipment was developed based on Open CASCADE, The method of building the component tree was used to achieve the design of the main of the device. By adding the component model and defining the position and sports relationship, completed the three dimensional modeling of main structure and established the motion model. And combined with the MID cellular antenna model, the simulation of the laser machining process about the product has been completed on this system. The result verifies the validity of the simulation system.
The Vibration Characteristics Analysis of U-Shaped Pipe Based on Finite Element and Modal Experiment
Authors: Zhang Li , Tian Ye , Ma Yan Miao
Published: September 2013

The U-shaped pipe located in the compressor piping system of the lyophilizer is studied in this paper. Its finite element modal analysis is carried out through the software ABAQUS, and at the same time, the experimental modal analysis is conducted by the software LMS Test.lab and its corollary equipment. Through the comparison between the finite element modal analysis results and the experimental modal results, it can be seen that the two results have good consistence, which verifies that the finite element model is reasonable. This paper provides reference for the further studies of the curving pipe vibration.
Fuzzy System for DOA Estimation of Coherent Signals
Authors: Chen Ya Ling , Lin Chien Chou
Published: September 2013

This paper presents an efficient direction-of-arrival (DOA) Estimator for dealing with coherent signals. The empirical results show that significant performance degradation occurs when coherent signals coexist. Therefore, an utilizes the low sensitivity of Bartlett algorithm in estimation of DOAs for coherent signals to yield a low-resolution estimation of DOAs as initial search angle and uses fuzzy logic systems with incorporating expert knowledge to improve the resolution and performance of estimation of DOAs in coherent signals environment. Finally, numerical example was analyzed to illustrate high performance of the proposed method and to confirm the designed procedure.
An Improved Swarm Optimizer for RFID Network Scheduling
Authors: Lu Shi Lei , Yu Shun Zheng
Published: September 2013

Optimization of network scheduling is a significant way to improve the performance of the radio frequency identification (RFID) networks. This paper proposes an improved particle swarm optimization algorithm (PSO). It uses an animal foraging strategy to maintain a high diversity of swarms, which can protect them from premature convergence. The proposed algorithm is used to optimize the network performance by determining the optimal work status of readers. It has been tested in two different RFID network topologies to evaluate the effectivenesss. The simulation results reveal that the proposed algorithm outperforms the other algorithms in terms of optimization precision.
The Application of Wireless Sensor Network and Middleware in the Internet of Things
Authors: Shi Yu Qing , Zhu Yue Long
Published: September 2013

Thanks to the sensors Wireless Sensor Networks (WSNs) nodes are provided with, and to their offer capabilities and ubiquity, these networks become extremely suitable for many applications that conventional wireless or cabled networks are unable to handle. One of these still underdeveloped applications is monitoring hydrologic stations. This is an especially interesting application regarding their water level or rainfall, for any detected hazardous parameter can be notified not only to the hydrologic station as a warning, but also to any third party that may be helpful under critical circumstances, such as related hydrologic stations or water conservancy department. We build and deploy a system to monitor the water level data from gauge stations in the Taihu Lake. Along with our middleware developed, sensors have been deployed by uses of several nodes conducting as the nodes of a WSN. The hydrologic data extracted from the environment, combined with the information get from the hydrologic station, will constitute the basis of the services that can be achieved.
High Precision Electronic Scale Design Based on MCU
Authors: Kuang Xing Hong , Yao Zhe Yi , Yao Zhe Yi , Wang Shi Ming
Published: September 2013

This paper introduces a design of the High Precision Electronic Scale Design Based on MCU, Hardware circuit reaches data processing by the control unit which based on MCU, and The MCU gathers data by weighting sensor, then the LM331 makes V/F transform, and the transformed data then transferred to MCU for display processing. At last, the LCD would show it out steadily without twinkling. The paper mainly puts forward the scheme and software design idea, hardware design.
Keyword Driven Automation Test
Authors: Wu Zhong Qian , Li Jin Zhe , Liao Zeng Zeng
Published: September 2013

In order to improve software reusability of automated test scripts, presents a keyword-driven test automation framework (KDTFA). First, the current existing automated testing framework for inductive analysis; then raised KDTFA system architecture; finally, an example of the android interface application framework and the existing framework for KDTFA actual contrast verification results show that the framework has a reduced scale of test scripts to improve the overall test efficiency and other advantages.
Research on Automatic Production Control Transformation of Gas Generator
Authors: Liu Jie
Published: September 2013

In this paper, the methods of gas producing automation control transformation and related experiences of a gas plant were investigated. During the project, the equipments for instrument testing were transformed, the valve control system was improved, a blower converter was set up, and the DCS System was applied to test and control the flow of gas production. In addition, the plant developed the automatic coal-refilling system, the blower frequency conversion control system and the gas load balance adjustment control system according to the characteristics of productive technology and equipments. After the project, the automatic control capability of gas production of the full material bed was improved. The gas production was stabilized and the operators' labor intensity was reduced to a new low. Various technical and economic indicators were greatly improved.
Design and Application of Large Torque Electrical Load Simulator
Authors: Wei Zhi Qiang
Published: September 2013

In order to meet the testing requirement of positive and reverse operation large torque load for new rudder, an electrical load simulator is designed. The system mathematical model is established and the feedforward compensation control of torque and rudder angle is adopted to restrain the surplus torque according to the principle of invariance. The high precision large torque load under positive and reverse operation for rudder is realized by torque and position hybrid control. The practical application shows that the proposed method can effectively restrain surplus torque and the system meets the high precision torque load under positive and reverse operation for rudder very well.
Nonlinear Disturbance Observer-Enhanced Depth Control for Submarine Using Sum of Squares Technique
Authors: Zhu Zong Da , Wu Li Fen
Published: September 2013

The state feedback control using sum of squares technique (SOStools) combined with the nonlinear observer is applied to the depth control of a submarine. The mathematical model of the submarine is rewritten as the linear-like form, then the uncertainty caused by the variation of the hydrodynamic coefficients is treated as the disturbance, which can be estimated online by a nonlinear observer. The method can provide good robustness against the nonlinearity as well as the uncertainty, which is verified by the simulation.
Analysis of Free Motion Characteristics for Dual-Spin Projectile
Authors: Wang Zhi Gang , Li Wei
Published: September 2013

On the basis of dual-spin projectile multi-body characteristics, the angular motion model is established in the quasi-body coordinates. Through linearization, the system dynamic stability factor and gyroscopic stability factor are obtained by differential equations characteristic roots. There is also informative to compare the dual-spin projectile gyroscopic stability factor to the conventional rigid projectile results. The comparison can be viewed where the influence of the spin rates ration γf/γa and the ratio of inertia moments Cf/Ca on the ratio Sg/Syg of the gyroscopic stability factors. Through the numerical example, the dual-spin projectile has a similar stability to that of a conventional rigid projectile, and the curves of the relationship between the ratio Sg/Syg of the gyroscopic stability factors with the ratio of spin rates γf/γa and the ratio of inertia moments Cf/Ca are got by simulation.
Automaton Fault Diagnosis Based on Chaos Theory
Authors: Pan Hong Xia , Cui Yun Peng
Published: September 2013

The work of the automaton fault diagnosis based on experimental measurement has not been researched except the fund project which this paper was come from. First, study the structure characteristics, movement process and several common failure modes of the automaton. Then we combined the automaton movement process analysis and the nonlinear, short-term impact characteristics of the vibration signal, proposed for the first time with a powerful tool for nonlinear problem researchthe chaos theory, to research the fault diagnosis of automaton, and finally realized it. It provided a new way for the fault diagnosis of automatic weapons. That has important theoretical and practical significance for high speed automatic fault diagnosis.
Design and Implementation of Ultrasonic Flowmeter Based on CPLD
Authors: Li Zheng Yan , Dong En Sheng , Yang Dong Ping , Zhao Dan Dan
Published: September 2013

The ultrasonic flowmeter designed in this paper uses improved time difference method to measure the flow velocity, uses MSP430 as microprocessor. The flow velocity measurement equipment of the ultrasonic flowmeter is based on CPLD(EPM7064AE). The results of the experiments show that the ultrasonic flowmeter has many advantages such as low starting flow, small pressure loss, low consume, operation reliable, fully functional and so on. It has good potential application of market.
Research on High Accuracy Guidance Law for Reentry Vehicles
Authors: Wang Zhi Gang , Yan Shen
Published: September 2013

The problem of low accuracy for classic guidance law is considered in this paper. Based on the mature theory used in missiles, this paper presents an integrated guidance law for reentry vehicles. At the initial stage of reentry flight, standard trajectory guidance law is employed, and then converts to 3dof proportional guidance law when this vehicle is close to the target. Simulation results are provided to demonstrate the accuracy of the proposed integrated guidance law.
Research the Steering Model by Human-Simulated Intelligence Based on Vision-AGV
Authors: Ai Qing , Li Shi Dong
Published: September 2013

This paper presents a multi-mode intelligent controller based on the schema theory by analyzing AGV steering control strategy, and selects the corresponding control algorithm through the characteristic identification results. The steering control model of V-AGV is built by Human-simulated Intelligent Control based on the sensory-motor schema. The simulation and experiment results show that the AGV runs well in the structure environment, and the model is open and universal application in the unstructured environment.
Online State of Charge Estimation for Battery of Electric Vehicle Using Sigma-Points Kalman Filters
Authors: Fang Li Cun , Xu Gang , Li Tian Li , Zhu Ke Min
Published: September 2013

An accurate state-of-charge (SOC) estimation of the hybrid electric vehicle (HEV) and electric vehicle (EV) battery pack is a difficult task to be performed online in a vehicle because of the noisy and low accurate measurements and the wide operating conditions in which the vehicle battery can operate. A Sigma-points Kalman Filters (SPKF) algorithm based on an improved Lithium battery cell model to estimate the SOC of a Lithium battery cell is proposed in this paper. The simulation and experiment results show the effectiveness and ease of implementation of the proposed technique.
Design of Intelligent Mouse Based on ARM
Authors: Zhu Jin , Yan Dan Dan , Zhang Jie
Published: September 2013

Intelligent Mouse is a micro-robot with special wisdom and it is a typical electro-mechanical integration system. This document has detailedly described the facture of mechanical structure, circuit design, software algorithm and other hardware system configurations. For the hardware, the control center of this mouse has used LM3S615 microcontroller which is based on the ARM® CortexTM-M3 v7M architecture developed by Luminary. This document also introduced that, the left/right-hand searching of the mouse, mapping, and calculation of the shortest path.
Applications of ADRC in Unmanned Surface Vessel Course Tracking
Authors: Wang Chang Shun , Xiao Hai Rong , Han Yao Zhen
Published: September 2013

The Unmanned Surface Vessel (USV) is researched widely due to its unattended, mobility and other advantages. In this paper, the control object is a double propeller electric propulsion USV, where the study based on. The USV motion mathematical model is studied firstly, and active disturbance rejection controller (ADRC) is applied to the USV course tracking. Simulation results demonstrate that the ADRC is effective in USV course tracking.
Design on High-Precision Condensation Water Measurement in Air Conditioner Performance Testing Chamber
Authors: Huang Yuan Yuan , Wang Fang , Xiong Yi Wei , Li Tian Wu , Chen Yong Li
Published: September 2013

Before putting air conditioner into market, it must be checked strictly by inspection department. Balanced ambient room-type calorimeter chamber is used to measure the conditioner performance according to energy balance principle. At present, the principle of conservation of energy is a method with higher accuracy for air conditioner test. In this paper, we focus on introducing the measuring method of condensed water in the test system after explaining the principle of the air conditioning performance test balanced ambient room-type calorimeter chamber. it is used to balance the capacity measured in evaporator air conditioner by controlling the water inflow of the humidifier. In this way, can we achieve precise measuring the cooling capacity of the air conditioner.
The Application of Modified Covariance EKF Algorithm to Target-Tracking Modeling
Authors: Xu Shu Ai , Cui Shao Hui , Zhou Yuan , Tang Zhen Bin , Zhu Wen Jie
Published: September 2013

In traditional EKF algorithm, biased prediction is used to calculate the jacobian matrix, which leads to get an inaccurate covariance matrix and influence the estimated performance. This paper applies Modified Covariance EKF to target-tracking modeling to solve the problem. In this algorithm, jacobian matrix is calculated again with state estimation. Through this way, measured values are used to modify the covariance matrix, which makes it more accurate. Consequently, estimated performance is improved.
Design of the Intelligent Control System for Mine Hoist
Authors: Lou Guo Huan , Chen Chao
Published: September 2013

Traditional mine hoists have the characteristics of using more meters, complex operation and low production efficiency. To solve these problems, this article introduces an intelligent control system for mine hoist. In the system the industrial fieldbus is combined with the wireless network, the communication protocol of a point to multipoint is developed to realize wireless data collection and wireless data transmission between industrial computer with monitoring computers. For the speed control, a compound control algorithm of ant colony algorithm for optimal control and fuzzy self-adaptive PID control is presented to control hoist operation. Actual application shows that the system worked well.
Monitoring the Behaviour of Fireworks to Vibrations and the Establishment of the Mechanical Conditioning Influence
Authors: Gheorghiosu Edward , Ghicioi Emilian , Kovacs Attila , Jitea Ciprian , Ilici Stefan , Cioara Cristian
Published: September 2013

Fireworks are devices containing pyrotechnic composition which, upon functioning, will burn and/or explode to produce a visual or aural effect or movement, or a combination of such effects, intended as a direct form of entertainment.
Influence of Heavy Data Transmission Losses on Spectra of Signals
Authors: Soskic Zlatan , Tomić Jelena , Bogojević Nebojša , Ćirić Kostić Snežana
Published: September 2013

Measurements of machine vibrations are often influenced by heavy data losses during wireless transmission of signals, which arise because of electromagnetic interference of electric motors. In this paper, authors present an analytic calculation of distortions introduced in spectra of harmonic signals by heavy data transmission losses, which are characterized by the loss ratio and frequency of losses. The results may be used to reduce errors that arise during spectral analysis of signals in conditions of heavy spectral losses.
Nonlinear Oscillators with a Power-Form Restoring Force: Non-Isochronous and Isochronous Case
Authors: Kovacic Ivana
Published: September 2013

This work is concerned with single-degree-of-freedom conservative nonlinear oscillators that have a fixed restoring force, which comprises a linear term and an odd-powered nonlinear term with an arbitrary magnitude of the coefficient of nonlinearity. There are two cases of interest: i) non-isochronous, when the system has an amplitude-dependent frequency and ii) isochronous, when the frequency of oscillations is constant (amplitude-independent). The first case is associated with the constant coefficient of the kinetic energy, while the frequency-amplitude relationship and the solution for motion need to be found. To that end, the equation of motion is solved by introducing a new small expansion parameter and by adjusting the Lindstedt-Poincaré method. In the second case, the condition for the frequency of oscillations to be constant is derived in terms of the expression for the position-dependent coefficient of the kinetic energy. The corresponding solution for isochronous oscillations is obtained. Numerical verifications of the analytical results are also presented.