bluuebunny/crossref_metadata_2025 huggingface dataset:
Experimental Research on Premixed Porous Media Combustion in Multiple Ejection/Tangential Burner
Authors: Xu Jiang Rong , Chen Xiang Xiang , Wang Guan Qing
Published: December 2014

In this paper, the experimental research of porous media combustion was carried on premixed combustion of multiple ejection/tangential burner, the ignition characteristic, the resistance characteristics and the temperature distribution in the burner were obtained, and the experimental results were analyzed in detailed, which can provide references for the improvements of novel porous medium burner.
The Comparison of Durability Ceramic Cutting Tools in Turning Process of Steel 80MoCrV4016
Authors: Hatala Michal , Duplák Ján , Kočiško Marek , Kormoš Miroslav , Mičko Miroslav , Alowa Mohammed J.A.
Published: December 2014

Every experiment has inputs and outputs. Inputs are defined before experiment and they are accurately determined and described. Outputs have to be measured and described after experiment. It is very difficult to describe and express parameters that are base of experiments. Tested parameters and theirs dependencies are very often described by means of graphs, tables or definitions. Lot of parameters and their dependencies in engineering practice are not described by means of formula. Very important and often used standard ISO in engineering practice is standard ISO 3685. This standard includes characteristics for various cutting materials. The main part of this standard is T-vc dependence for cutting materials. One of the cutting materials contained in standard ISO 3685 is cutting ceramic. There are instructions obtained in standard ISO 3685 for creation of T-vc dependence. Specification cutting tools durability made of cutting ceramic in machining process of steel 80MoCrV4016 is very important for economics of small and medium-sized enterprises, because cutting tool durability is factor that significantly affects the budget of these enterprises. This problematic is determined for small and medium-sized manufacturers of bearings, because steel 80MoCrV4016 is most commonly used for production of bearings. Durability of cutting tool defines lifetime of this cutting tool and it determines its suitability for select technological operation. The article describes process how to create durability dependence for cutting tools made of cutting ceramic by means of T-vc dependence in machining process of steel 80MoCrV4016.
Upgrade of the Function Quality of the Machine Tools by the Oscillations Compensation
Authors: Matiskova Darina , Balara Milan
Published: December 2014

The paper deals with the improvement of quality control system harmonic drive with servo applying the method of compensation torque oscillations. The method consists of applying the rejection block. Post documents the oscillatory nature of the system servo-harmonic transmission. Described the reduction block connected to this system suppresses the oscillation of torque, speed and position of the harmonic drive output shaft thereby improving the quality of the regulatory process.The papers solves the problem of torque oscillations of the system which consist of servomotor and harmonic drive. Described rejection filter connected to the input of the system damps oscillations and increases the quality of control.
The Simulation as a Tool for Technical Devices Design and Optimization
Authors: Hric Slavomir , Lehocka Dominika , Carach Jan , Murgas Filip , Pastucha Peter
Published: December 2014

The article deals with the research of the pressures originated inside the cooling system and also in the mould cavity during the injection moulding process. The simulations were realized for three designed types of running system and for four versions of cooling system. 3D model of the mould was created in Autodesk Inventor Proffesional software and then solidification of material was simulated in Autodesk Moldflow Insight software. The results were compared and the best version from the view of pressure was manufactured and placed into the injection moulding machine Arburg Allrounder 320 C.
Application of RFID and ICT in Reverse Logistic in Poland
Authors: Grabara Janusz , Nowak Stefan , Ulfik Agnieszka
Published: December 2014

Reverse Logistics is an important part of the tasks entrusted to local government. Under the new legal requirement, it is necessary to adapt the existing solutions to new requirements and regulations. Deliberate use of RFID and GPS systems, that monitor and logistics management of municipal waste, and thus overseeing the amount of waste and their logistics.
Cluster Policy and its Influence on Economic Competitiveness
Authors: Spirkova Daniela , Caganova Dagmar , Sujanova Jana
Published: December 2014

The paper deals with economic benefits of clusters connected to competitiveness and regional development. Hard and soft benefits of clusters are described in relationship to innovation environment. The main focus is put on cluster policy influence on competitiveness of economy from the point of view of advantages of cluster creation for SME ́s. However, cluster policy contributes to the increase of competitiveness of small and medium enterprises.
Supply Chain Management in Condition of Production Company
Authors: Csikósová Adriana , Antošová Mária
Published: December 2014

Contribution presents application of logistic access, solved through Supply Chain Management (SCM) with orientation mainly to the capacity planning of production with aim to increase flexibility and productivity of production process. Such changes are necessary to be realized by change of company strategy, as well as by project’s preparation and change of investment’s aims for realization of transition to new system of production management. Discussion is orientated to concrete conditions of polygraph company in Slovakia, orientated to production, refinement and sale of flexible foils for packages.
Comparison of Reading Speed of Bar Codes and RFID
Authors: Hricová Romana , Šebej Peter , Rosová Andrea , Weiss Erik
Published: December 2014

Quick and easy identification is now at the forefront with producers, transporters, dealers as well as other subjects who need to process large amounts of information in real time as quickly as possible. That is why constantly increasing attention is being paid to automatic identification of objects (AIO). AIO is a fairly broad term that refers to technologies enabling machines to identify real objects. AI is also associated with automatic data acquisition. The technologies should subsequently increase efficiency, reduce errors in recording data and thus free up staff to perform tasks with higher added value. This article focuses on the comparison of the speed of data reading from the "classic bar code" and data recorded by radio frequency identification (RFID).
Design Policies in Virtual Cellular Manufacturing Systems by Multi-Domain Simulation Environment
Authors: Renna Paolo
Published: December 2014

In today’s competitive market, customer demand is characterized by high fluctuations and it is more difficult to forecast. Therefore, the classical cellular manufacturing systems need to be revised in order to stay competitive. Among the different approaches to support the cellular manufacturing systems, the concept of virtual cellular manufacturing systems can improve the performance in turbulent environment. This paper proposes two policies to support the problem of the reconfiguration of machines in a virtual cellular manufacturing system. The policies proposed are tested developing a multi-domain simulation environment in ExtendSim®. The experiments conducted show how the proposed approach improves the performance of the manufacturing systems especially when some disturbances occur as demand fluctuations, machine failures and processing time are uncertain.
Approach to Creating Structures of Production Systems
Authors: Kováč Juraj , Valenčík Štefan
Published: December 2014

Contribution of presents a set of information related to modelling the structures of automated production systems. For the creation of integrated structures of production logistics system uses the principles in order to clarify and streamline in-plant material flow between different logistics nodes, including the relevant information flow, eg. throughintegrable and compatible handling and technological systems.
Knowledge Model of Corporate Governance
Authors: Taraba Pavel , Pitrová Kateřina , Hart Martin
Published: December 2014

Based on the questionnaire survey which aimed to analyse the level of application of knowledge in the corporate governance in companies in the Czech Republic and on the study of available information sources, three-level knowledge model of Corporate Governance in the Czech Republic was proposed. Expertise using the concept of holistic management and knowledge of current management trends are considered as a basic level of knowledge in corporate governance. Knowledge in the field of strategic and knowledge of the principles of corporate governance are considered as a higher level of education of members of corporate governance bodies. Advanced level of education in the field of corporate governance represents the national certification programme of corporate governance.
Application of Virtual Reality Means in Dashboard Function and Dashboard Assembly Fixture Ergonomic Analysis
Authors: Senderská Katarína , Mareš Albert , Kováč Jozef
Published: December 2014

Manual assembly has in some areas of production dominant role. For its effective performance the different jigs and fixtures may be used. For the design of such fixtures, it is useful to use CAD systems. The proposed fixture is necessary to additionally verify from the different points of view, including the ergonomic. For the fixture verification from ergonomic point of view, it appears that it is useful to use virtual reality components such as data gloves and their connection to the CAD design. The article describes the application of data glove for the verification of the functionality of the product and the functionality of its assembly fixture from ergonomics point of view.
Linking Management Levels of the Production Process
Authors: Dorčák Dušan , Lišuch Július
Published: December 2014

This document represents the intersection of technological, logistical economic level management in the manufacturing sector. The basis for the success of the production plant is correctly chosen strategy, which should be directly linked to the business plan. Its development cannot do without knowledge, basic knowledge of strategic management, logistics, technology and economic indicators.
Qualitative Problems in Enterprises
Authors: Skowron-Grabowska Beata
Published: December 2014

In this paper the chosen problems of quality in enterprises are presented.
Case Study of Production Diversification Strategy in an Industrial Company
Authors: Freiberg František , Žilka Miroslav , Stieberová Barbora , Scholz Pavel
Published: December 2014

The paper addresses diversification strategy as a possibility to solve the problem of reduced use of production capacity caused by external factors such as a decline in demand in the core business. On the basis of real case study of a Czech production company the paper presents the methodology for the development of the diversification strategy with the aim of successful penetration to industrial sectors. The whole process is divided in four phases. The first phase is focused on the identification and assessment the production and competitive competences of the company. The second phase deals with the evaluation of potential sector attractiveness and feasibility of entry in the analysed sector. The received results served as a basis for setting a complex evaluation matrix subsequently, which was used to target on the most promising sectors. A detailed survey was carried out, that focused on the selected sectors within the third phase providing a basis for key success factors identification and potential entry scenario projection. The last phase focuses on important aspects of economic efficiency estimation of the entry into the selected industrial sector.
Measurement of the Distance between Axes of Holes with the Roundtest RA-120
Authors: Michalik Peter , Zajac Jozef , Hutyrová Zuzana , Mitaľ Dušan , Olhova Jaroslava , Robert Cep , Cep Robert , Petru Jana
Published: December 2014

This template explains and describes how to machining some holes with various of axis distance. Use Roundtest RA – 120 was measured and alignment and subsequently calculated the distance of the holes.
Product Quality Improvement Using Simulation Tools
Authors: Hric Slavomir , Vagaska Alena , Radchenko Svetlana , Murgas Filip , Micko Milan
Published: December 2014

The article deals with the basic technological aspects of injection moulding, pointing to the importance of correct product geometry design. Large differences in the wall thickness of the mould result in uneven cooling, material shrinkage, and the formation of internal stress. This ultimately may give rise to deformations, such as those in form sink marks, and may affect the required quality of the mould. The article describes the application of a specific example of one of the ways of correction of the mould wall thickness used in technological practice of the injection moulding technology. This is a case of employing the method of the so-called relief pins. After the introduction of the proposed modification of the form, the mould quality has improved, thereby increasing the production efficiency in the process of shape optimization of manufacturing the product called Installation Box Series S-BOX 106 made of polyamide PA 66. In addressing the issue, simulation of cooling plastic and injection pressure in Cadmold 3D-f software was employed.
Study the Quality of Welded Joints of Steel S235
Authors: Mitaľ Dušan , Michalik Peter , Zivčak Jozef , Czan Andrej , Stanceková Dana , Radchenko Svetlana , Vybostek Jaroslav
Published: December 2014

Presented article is focused on welding of structural steel using coated electrode. Weld can be defines as a permanent join of two or more materials. Welder unit was Inventor 140 GC, where was weld 6 samples with different parameters of welding. Samples were tested by non-destructive methods such as visual control, capillary method and ultrasound method. Detection of defects in microstructures was made by destructive method – metallographic method. Testing of quality provide the most suitable welding parameters for welding constructions from structural steel S 235.
Innovative Model of Economic Development in the Region
Authors: Radchenko Svetlana , Zajac Jozef , Kočiško Marek , Hutyrová Zuzana , Zajac Jan , Bernat Andrej
Published: December 2014

This article discusses the role of regions in the innovative development of the country, regional innovation policy objectives, status of regional innovation systems in the regional economy and the factors influencing the formation of regional innovation capacity. The article discusses about global innovation policy and innovation potential of Slovakia.
Parametric Design of Deep Groove Ball Bearing Based on Pro/Program and Family Table
Authors: Miao Nai Ming
Published: December 2014

Due to the same series of rolling bearing standard part with the same topology structure and different dimension parameters, a series of rolling bearing products can be designed by parametric design method. Based on the development tool of Pro/Program and family table combined with three-dimensional modeling, this paper takes deep groove ball bearing for example to discuss the means and steps of rolling bearing parametric design. By entering the relevant parameters, such as the bearing outside diameter, bearing inside diameter, bearing width, ball number and other known conditions, we can accurately and quickly generate a new rolling bearing solid model. The result shows that in the design environment of Pro/ENGINEER, using parametric design to make three-dimensional modeling can shorten design cycle time and improve design efficiency significantly.
The Optimization Method of Tailor Welded Blank Forming Process Based on Numerical Simulation
Authors: Gan Yong , Li Jia Xing , Chen Yang , Li Hong Zhao
Published: December 2014

The tailor welded blank stamping is a complicated process with numerous forming parameters, so it is difficult to determine the relationship between the forming parameters and the formability. The TWBs forming is numerically simulated by an orthogonal experiment design while the thickness ratio, blank holder force and frictional coefficient are forming parameters, and the maximum thickness thinning and the maximum weld movement are index. The influencing degree of forming parameters on the index and the optimal combination of forming parameters are analyzed. The optimization design is used to carry out numerical simulation and verification which can effectively improve stamping formability of TWBs. The simulation results also show that optimization schemes can offer the reference for the forming parameters optimization of the TWBs.
Research on Gear Mesh Misalignments under the System Deformation
Authors: Deng Xiao He
Published: December 2014

The gear transmission is a complex elastic system. The system deformation under the load will make the position of mating gear deviating from the ideal position. The deformation varies with different gear shifts and load that will cause the different type of gear mesh misalignments. Therefore, the researches on the gear mesh misalignment should consider the effect of deformation of gear system under different working conditions. The paper established an elastic model of commercial vehicle transmission system. The gear mesh misalignments under different shifts and different load are obtained considering the integrated system deformation. The variation values of gear mesh misalignments are analyzed correspondingly.
Static Stiffness Analysis of High Stiffness Rotary Hinge Locking Mechanism for SAR Antenna
Authors: Cong Qiang , Wang Yan , Zhang Cong Fa , Liu Rong Qiang , Wang Jin
Published: December 2014

Rotary hinge plays an important role in the support structure of the deployable planar antenna. The high stiffness hinge locking mechanism is designed in this study which is composed of active half, follower half, pre-meshing spring and rotary axes. The static stiffness of the mechanism is investigated by theoretical analysis, numerical method and experiment. The test apparatus is constructed in order to measure the prototype. The tests included locking force, locked stiffness, drive torque are performed which are used to verify the analysis and the design.
Research on the Variable Ratio Gear Modeling and Transmission Ratio Test Method of Rack and Pinion Variable Ratio Steering Gear
Authors: Niu Zi Ru , Li Gang Yan , Zeng Shun , Yan Tian Li , Zhang Si Yu , Wang Wei
Published: December 2014

A new modeling method for the variable ratio gear of the rack and pinion variable ratio steering gear was proposed in this paper. It was based on the characteristic that variable ratio gear pair meshing tooth profile surface are the envelope surface of each other and established a variable ratio gear three-dimensional model by simulating the gear machining process in CATIA and using Boolean subtraction operation. According to the related test standard of the variable ratio steering gear transmission ratio, a test bench was design and build, and the correctness of this modeling method was verified by comparing the designed variable ratio curve and the steering gear sample designed and processed by this method.
FSAE Racing Gear Selection and Shifting Agencies Choose to Discuss the Impact of Car Drivers
Authors: Chao Jie , Gong Hang
Published: December 2014

FSC is a Formula One car contest car works by the universities or auto-related professional school students team up to participate in the design and manufacture of automotive competition. All participating teams in accordance with the rules and race car manufacturing standards, in a year's time to design and manufacture an accelerating, braking, handling, and so has excellent performance of small single-seater racing leisure, to successfully complete all or Part of the event part of the game. This article discusses the transmission of choice for car drivers.
Study on the Closed-Loop Control Strategy of Voltage for Pure Electric Vehicle in Limp Mode
Authors: Chu Liang , Guo Chong , Yang Yi , Fu Zi Cheng , Zhang Yuan Jian
Published: December 2014

In order to avoid the nonreversible damage to the batteries because of over discharge when the pure electric vehicle is moving, this article proposes a driving control strategy in limp mode due to under voltage. Firstly, research the discharge characteristics of the lithium battery pack. Secondly research and develop the control strategy that limit the motor torque by the closed-loop control of voltage. Finally develop the strategy model using MATLAB/Simulink, and finish the verification test and prove the control strategy effectiveness by offline simulation.
Particle Swarm Optimization of PIλDμ Control of Heating Furnace Temperature Control System
Authors: Wang Pei Guang , Zhang Lian , Zong Xiao Ping
Published: December 2014

Due to the complexity of the heat transfer for heating furnace, some characteristics are caused such as big inertia, great lag. In the temperature control system for heating furnace, the traditional PID controller can not get satisfactory effect, that dynamic is instability and control accuracy is bad, which is very detrimental to the system to achieve optimum efficiency. A fractional order PIλDμ controller based on particle swarm optimization method was designed, at the same time compared with PID control. Simulation results show that, fractional order PIλDμ control based on particle swarm optimization has better convergence stability, faster response times and higher accuracy value. Fractional order PIλDμ controller has better dynamic performance, compared with traditional PID controller, greatly improves the quality control system.
Self-Scheduled and Robust Control for Tilt Rotor Aircraft
Authors: Cao Yu Yan , Wang Xin Min , Peng Cheng
Published: December 2014

A kind of self-scheduled and robust control algorithm for the conversion mode of tilt rotor aircraft is proposed in this paper. The mathematical model of the aircraft is established by modeling each component and combining. Then the conversion corridor is obtained by trim results. The convex combination of several vertex system combined with two-dimensional interpolation is designed to solve the problem of self-scheduled while nacelle tilting. Last sufficient and necessary conditions for the existence of the state-feedback controller are given and a MATLAB tool is raised to ensure performance of the system.
Study on Parametric Reverse Modeling
Authors: Hu Shuang Xi
Published: December 2014

Methods about parametric reverse modeling have been studied based on products’ point clouds by comparing model rebuilding processes in different ways, such as collaborative reconstruction based on both reverse engineering software Geomagic and 3D modeling software, reverse and forward hybrid modeling based on Rapidform. It‘s concluded that reverse and forward hybrid modeling based on Rapidform takes more advantages in parametric reverse modeling, It is more rapid , accurate, and closer to the design intent.
Simulation of Valve Position Feedback Mechanism Based on Pro/E and ADAMS
Authors: Fan You Jun , Li Fei , Zhao Hua Tian
Published: December 2014

In traditional valve position feedback mechanism design, it is tested repeatedly and improvement after processing prototype, the process is complex and workload. Using Pro/E and ADAMS, the overall mechanical structure of the valve position feedback mechanism for joint simulation, and an analysis of the kinematics and dynamics model, simplified the design process of the repeated calculation, get the relationship of stem displacement-angle between gear, gear meshing force and motion state of the stem, the simulation value compared with the theoretical value, tallies with the data and shows that the simulation is reasonable.
Intelligent Control of Time-Delayed System
Authors: Zhang Chen Jie , Hu Han Ping , Zhang Yun Qi
Published: December 2014

In the industrial control process, the controlled object usually has a serious time delay, time-varying, nonlinear, and a wide variety of interference is present, the use of conventional PID control method, it is difficult to obtain satisfactory dynamic and static performance. This paper introduces a fuzzy control theory for online use of PID parameters modified intelligent control method, the controlled system has a good dynamic characteristics, static characteristics and anti-jamming capability. The results of computer simulation in Matlab and experimentation show that the method is efficacious.
Developing Fuzzy Control Irrigate System Based on PLC
Authors: Xiao Lei , Li Li , Wu Xiao Long
Published: December 2014

This paper will describe that the fuzzy control is used to realize irrigate real-time control. And some reasonable fuzzy rules are found by computer simulation in MATLAB. Then the real-time irrigate will be applied by fuzzy control rules with Programmable Logic Controller (PLC) circuit. At last, writer made a conclusion that debugging greenhouse seedlings is well to meet the requirements of greenhouse.
Anti-Synchronization Control of the Complex Lu System
Authors: Zhang Fan Di
Published: December 2014

This paper propose fractional-order Lu complex system. Moreover, projective synchronization control of the fractional-order hyper-chaotic complex Lu system is studied based on feedback technique and the stability theorem of fractional-order systems, the scheme of anti-synchronization for the fractional-order hyper-chaotic complex Lu system is presented. Numerical simulations on examples are presented to show the effectiveness of the proposed control strategy.
The Research of Stamping Springback Compensation Algorithm Based on the Improved Fourier Transform
Authors: Liu Wen Juan , Liang Zhi Yong , Zhu Xiang Yuan , Zhang Xian Yu
Published: December 2014

In view of the high precision requirements of the more complex stamping parts of the springback law, this paper put forward a rebound closed loop control system model based on the improved Fourier transform. First of all, starting from the product model, it use the method finite element analysis and the forming process parameter optimization for the initial mold design, and then to measure the mould and stamping products and assess the springback error. Finally, eliminating the springback error through two iterative loops to complete the final mold fixed compensation. Experiments show that the system can complete the mould shape correction effectively by using the model and realize the springback compensation of complex stamping parts.
Study on the Energy Management System of Electric Vehicle Charging Station Based on Multi-Agent System
Authors: Tao Yao Huan , Wang Shao Jie , Zhang Xian Shuai
Published: December 2014

Under the constraints of distribution transformer capacity and customer charging needs, a UML model for EMS of EV Charging Station is proposed to analyze energy dispatching functions and integrate control strategies of Charging Station. Due to the fact that EV charging system is a complex adaptive system, Multi-Agent System method is utilized in this model. The UML development process provides an extensible and integrated framework, which lays the foundations for the further development on EMS of EV Charging station.
Research on the Design and Manufacture of Steam Cleaning Machine Based on PLC
Authors: Zhang De Min , Li Shi Bo
Published: December 2014

In this paper, the programmable logic controller (PLC) produced the steam cleaning machine controller based on PLC and foundation design, and steam cleaning device controlled the process of the realization .The programmable logic controller PLC programming and logic design, system realizes according to different artifact types, complete cleaning, blowing, drying the corresponding action. This system after careful design, manufacturing and detailed inspection, and after the running test, the experimental results shows that: as long as the proper maintenance and proper use of equipment, the project can improve the efficiency to a great extent.
Reflection Plane Precision Measuring Methods Research of Shipborne Measurement and Control Antenna
Authors: Sun Yong Jiang , Lu Xing Long , Jin Hua Song , Yu Jian Cheng
Published: December 2014

In this paper, measuring principle of shipborne measurement and control antenna was introduced, error index analysis was carried out. Main reflection plane replacement of a certain shipborne measurement and control antenna was taken as an example, installation methods of the antenna and measuring methods of main reflection plane precision were described, and solutions to the difficulties in measuring were put forward. Plane precision measuring and data processing were carried out finally. The results showed that, the operability of these methods were high, and the measuring results of reflection plane precision met the necessity of the index.
Effects of Traffic Calming Measures on Vehicle Speed Control and Road Safety
Authors: Jiang Yu Bo , Jiang Liang Hua , Qin Ya Qin
Published: December 2014

This thesis introduced the origin and function of traffic calming measures in solving road safety problem and reducing vehicle speed to make the environment more secure, also introduced several different types of basic traffic calming measures. Facts showed that using traffic measures can improve the safety of traffic environment, reduce vehicle speed and decrease accidents and pollutions. Therefore, traffic calming measures should be highly valued by governments and policy makers in constructing a city with harmony and prosperity.
Numerical Analysis of Buried Heating Branch Junctions
Authors: Liu Yu Liang , Wang Fei , Li Lin Ping , Wang Guo Wei
Published: December 2014

In this paper, the tee of buried heating pipe network has been investigated via the elastic-plastic finite element method. Fourth equivalent stress and distribution regularity of buried heating tees have been analyzed at different branch pipe diameter d/D and different branches length. The obtained results show that the limit length of tees decreases for the pipe diameter above DN500. The smaller diameter can lower the Von Mises stress of tees effectively. The stress of the outer wall is always greater than the internal stress.
Fault Prediction of Pitch Actuator for Wind Turbines
Authors: Zhao Hong Shan , Lian Sha Sha , Shao Ling
Published: December 2014

Hydraulic pitch-controlled system is one of the components of wind turbines which are frequently prone to faults. Early fault prediction of the pitch control system can improve the operation reliability effectively and reduce the unnecessary loss. Wind turbines suffer much environmental interference; moreover, data-based fault prediction is vulnerable to occur false alarms by the impact of these factors. And it is difficult to implement the fault isolation. So this paper presents a fault prediction method for the pitch-controlled system, which is based on the mathematical model of wind turbines physical properties. The residual root mean square (RMS) is used as residual evaluation function. In the end of the paper, by the simulation using the hydraulic pitch actuator fault as the example, the effectiveness of the proposed fault prediction scheme is verified.
Vivid Algorithm of Scene Simulation for URAV
Authors: Jin Guo Dong , Lu Li Bin , Zhu Xiao Fei
Published: December 2014

UAV simulative training system can insure the time and effect of training through reducing training cost. Scene simulation system in this paper is the vital component of the system. The comparability to real equipment is the ultimate request to the simulative training system, as to the scene simulation system, the reality and the veracity of changing rule of scene is most important. Simulation systems existing have deficiencies in these parts. Through studying on these aspects, the system in this paper uses DEM data and airscape to display lifelike vision of real terrain, scene drive model is designed to simulate the influence to the scene from the state changing of the flight and vidicon, real-time interconnection is realized.
Optimum Sensor Array for Passive Localization from Time Differences of Arrival
Authors: Zhou Cheng , Huang Gao Ming , Gao Jun
Published: December 2014

The problem how to improve the accuracy of passive localization from time differences of arrival received considerable interest. The localization performance of any unbiased estimator can be explicitly characterized by certain measures, for example, by the Cramer-Rao lower bound (CRLB) on the estimator variance. The lower the CRLB, the better localization performance. It is well known that the relative sensor-target geometry can significantly affect the performance of any particular localization algorithm. It demonstrates, when target is surrounded by the sensors, uniform angular array is the optimum sensor placement, in which the CRLB is minimized.
Road Flatness Detection Using Permutation Entropy (PE)
Authors: Wang Qing Chao , Song Wan Qing , Liang Jian Kai
Published: December 2014

Aimed at checking the signal’s nonlinearity and instability of road flatness, in order to get a more convenient and significant approach to verify the pavement smoothness, a road roughness detection method on the base of Permutation Entropy (PE) algorithm is put forward. This method firstly relevantly deals with the collecting road signals, then getting Permutation Entropy (PE), and reaches relevant drawing data array. By the use of Matlab drawing, the road roughness can be proved according to the PE. The experiment turns out that Permutation Entropy (PE) algorithm has an effective and convenient effect on checking road flatness, and it is more obvious to show pavement roughness compared the method of the Holder index.
Violation Behavior Analysis of Pedestrian and Non-Motorized Vehicle
Authors: Hao Pan , Hao Qing Yu
Published: December 2014

Behavior-based analysis of the relationship between pedestrian and non-motorized vehicle’s violation was established through empirical study and survival analysis. The nonparametric method which belongs to survival analysis a statistical method combining the result of the event and the time of result complied with the SPSS the data statistical analysis software was used to set up hazard rate function and waiting time survival function and then the regularities of the pedestrians and non-motorized vehicles’ irregularities are obtained. The study is helpful to evaluate the crowd on the influence of the irregularities and provide the basis for urban planning.
Data Prediction Algorithm in Wireless Sensor Networks for Oil and Gas Pipeline Monitoring
Authors: Yu Hua Ping , Guo Mei
Published: December 2014

Energy efficient problem of wireless sensor networks for oil and gas pipeline systems is a fundamental problem, and furthermore, data prediction algorithm can effectively reduce the communication energy consumption of WSNs. This paper firstly analyzes existing common data prediction algorithms and the data characteristics of oil and gas pipelines monitoring data. And then introduces the three-layer architecture of WSNs. Lastly, the adaptability analysis of various prediction algorithms are proposed, the analysis result shows that the accuracy of data prediction algorithm can meet requirements of oil and gas monitoring, and prediction algorithms can effectively reduce the amount of data transmission and prolong network life span.
The Research on Central Monitoring System for Wind Farm
Authors: Tang Yang , Yang Zhao , Wang Chen Chen , Zhang Yu Qiong
Published: December 2014

This paper describes a wind power monitoring software design ideas, and its design focus is the client software monitoring platform for wind farm monitoring. In this paper, for the characteristics and requirements of the wind turbine monitoring system, it involved the design of the wind farm monitoring software design architecture, the design of the monitoring system to achieve real-time display of wind turbine production data, alarms, historical data storage and query, report generation and other operations, achieve the production site for real-time monitoring of wind turbines.
Chaos Research of Asymmetric System Based on Melnikov Method
Authors: Hu An Kang , Liu Ya Chong , Han Feng Lei , Wang Chun Hui
Published: December 2014

Based on Helmholtz-Duffing which is a typical nonlinear asymmetric dynamical system, According to homoclinic bifurcations, prerequisites for chaos motion are obtained by use of Melnikov theory. As a result of verifying the analytic solutions, the safe basin and the phenomena of erosion of the safe basin are simulated by numerical method in the end. The research indicates that the value range of is closely related to the area influenced by the value itself: when is located in the range of from zero to one, the left part of system is mainly affected; when is larger than one, the right part of system is mainly affected. For the same symmetry parameter , there exist a critical frequency at which the threshold value of the amplitudes of both left and right part of system are equal.
The Study of Traffic Rules Based on Cellular Automata Traffic Wave Model
Authors: Liu Wen Bin , Yang Yue Qiang
Published: December 2014

The traffic control problem is a hot issue in recent years. We investigate the effectiveness of three traffic rules in assuring safety and improve traffic flow. We utilize a cellular automata method of traffic flow to investigate and simulate the vehicle performance and use a linear weighting approach to weigh safety and traffic flow comprehensively. We establish overtaking models of a two-lane freeway on the basis of the stochastic traffic cellular automaton (STCA) model. Using the cellular automata method, we simulate the relationships between the traffic flows, the average vehicle velocity, and the vehicle density. We propose two new traffic rules, which in the premise of ensuring safety and improve traffic flow.
Evaluation Framework and Method of the Intelligent Behaviors of Unmanned Ground Vehicles Based on AHP Scheme
Authors: Zhang Xin , Zhao Yan An , Gao Li , Hao Dong Hao
Published: December 2014

In order to provide basis and standards to the research on unmanned driving behaviors, a more thorough evaluation system of Intelligent Behavior for Unmanned Ground Vehicles needs to come forward. The intelligent behavior of unmanned ground vehicles in pedestrian crossing scenario is taken as an example in this paper. By using building and analyzing evaluation index system, this paper proposes an evaluation method that can comprehensively expressed the technological performance of unmanned ground vehicles based on Analytic Hierarchy Process (AHP). Compared with traditional methods, this evaluation method takes index weight into sufficient conderations and is more objective. The method properly works out with index weight of specific scenarios that reflects the actual situations. The establishment of comprehensive scoring method objectively and conveniently turns the performances of unmanned ground vehicle into scores, so that the results can be compared and ranked directly. Last but not least, a certain participating vehicle is used for case study. The result proves aforementioned method to be practical, reliable, convenient and logical. It not only evaluates the assessment comprehensively, but also evaluates the index separately to guide researchers to find out the defects of unmanned driving vehicle evaluation indexes and point out ways to improve them.
The Electric Monitoring System Application Based on ZigBee Wireless Technology
Authors: Li Yong , Ding Xiao Dong , Li Yu Ting
Published: December 2014

The electrical monitoring is the most important part of industrial production, with industrial production situation of increasingly complex, also more and more high to the requirement of wireless industrial monitoring and control system. In this context strengthen monitoring system based on ZigBee wireless industry research is of great significance. Wireless electric monitoring system based on ZigBee has more advantages compared with traditional wireless monitoring technology. To strengthen the research of this technique is a necessary choice to meet the requirements of the actual industrial production. This article will revolve around ZigBee technology to explore how to enhance the level of electrical control system.
A Method of Order Determination for ARX and ARMA Models Based on Nonnegative Garrote
Authors: Jin Guo Dong , Lu Li Bin , Zhu Xiao Fei
Published: December 2014

Classical order determination methods of ARX and ARMA models suffer from the drawbacks of computationally infeasible and poor stability. To solve these problems, order determination using nonnegative garrote (NNG) method is proposed. By analyzing the properties of ARX and ARMA models, a modification of original NNG method is made to fit the dynamical system identification problem. Furthermore, the solution algorithm of proposed method is presented. Simulations show the validation of proposed method, which has better stability than classical information based criteria methods.
The Design and Implementation of a Certain Type of Information Machine Simulator Based on ARM
Authors: Tu Jian Hua , Shao Zhi Chao , Tan Xiang Lin , Qu Fu Qi
Published: December 2014

Aiming at the problem of complex operation and difficult to maintenance of the information machine, in this paper, we integrate ARM hardware platforms, databases, C# programming to design maintenance and training simulator of information machine. Results show that the training simulator can well meet the requirements of teaching and training on the premise of guarantee equipment performance, which has high military, economic benefits and application foreground.
The Design of Mobile Phone Multimeter Based on the Android Platform
Authors: Cheng Zheng Tao , Yang Miao , Wang Wei Ping
Published: December 2014

This paper presents a design of mobile phone multimeter based on the android platform, the multimeter can be used to measure DC voltage, DC current, AC voltage, AC current, resistance, capacitance, frequency and duty ratio etc.This design combines a mobile phone and a multimeter, the multimeter is simplified as a unit of measurement, MCU only as a core element of control and measurement, Bluetooth module HC - 06 will sent the real-time measurement data to mobile phone. Based on the flexibility and diversity of the Android APP development, the potential function of multimeter will be motivated ,which can be used as a detection device of all kinds of power output of the sensor device or Wireless transmitting device and realize the true "universal"
An Algorithm to Find the First K Spanning Trees with Minimum Weights
Authors: Sun Gang Ming , Li Hong , Wang Pin
Published: December 2014

By improving and extended Kruskal algorithm and using the backtracking method, we obtain an algorithm to find the first k spanning trees with minimum weights. Experiments show that for various types of randomly generated undirected connected graphs of which the number of nodes is 10,000, while the number of edges can be up to millions, this algorithm can obtain results within a few seconds.
A Novel and Improved Apriori Algorithm
Authors: Gu Dong Juan , Xia Lei
Published: December 2014

Apriori algorithm is the classical algorithm in data mining association rules. Because the Apriori algorithm needs scan database for many times, it runs too slowly. In order to improve the running efficiency, this paper improves the Apriori algorithm based on the Apriori analysis. The improved idea is that it transforms the transaction database into corresponding 0-1 matrix. Whose each vector and subsequent vector does inner product operation to receive support. And comparing with the given minsupport, the rows and columns will be deleted if vector are less than the minsupport, so as to reduce the size of the rating matrix, improve the running speeding. Because the improved algorithm only needs to scan the database once when running, therefore the running speeding is more quickly. The experiment also shows that this improved algorithm is efficient and feasible.
Algorithm for Computing Attribute Reduction Based on Radix Sort of Optimized Linked List Structure
Authors: Zhang Lei , Ding Ge Jian
Published: December 2014

The attribute reduction algorithm of radix sort to integer digit sequence table is not ideal. In this paper, based on how integers is stored in computer memory, low and high storage mode is designed for the solving algorithm of U/C chain structure of a new reasonable optimization. The time complexity of the algorithm from O (K|C| |U|) is reduced to O (K|C| |U| log (|M|)). The efficiency of the algorithm is improved by 3.8%.
Based on Class D Amplifier Magnetic Resonance Wireless Transmission Technology
Authors: Yu Xi Peng , Yang Guang , Song Wen Hao
Published: December 2014

Radio capable of transmitting power transmission is carried out via electromagnetic waves, thus eliminating the need of a new power supply cord and outlet. This article highlights and summarizes the three main ways the existing wireless transmission technologies, including electromagnetic induction wireless transmission technology, far-field radiation wireless transmission technology, magnetically coupled resonant wireless transmission technology, the basic principles. And proposed resonance energy transfer mode radio based on Class D amplifier, and then describes in detail the basic principles of magnetic resonance energy transfer system radio various parts of the circuit.
Research and Application of UPS-CAN Protocol in Parallel System
Authors: Zhang Hai Yan , Zhu Kai Di , Wan Jian Zhong
Published: December 2014

As an important application area of field-bus system, UPS require high reliability and real-time property. Standard CAN protocol in application layer have not been proposed in home and abroad. Based on CAN-bus 2.0 A/B, this paper designed UPS-CAN protocol which conform to general UPS parallel system and proposed a novel network management system (MSN) during development of module UPS parallel system. Experimental results proved the reliability and real-time property of UPS-CAN which meets the requirement of UPS parallel communication system.
An Active Equalization Technique Based on Flyback Converter Topology
Authors: Liu Hong Wei , He Hong , Gui Yu , Hao Xiao Wei
Published: December 2014

This paper presents an active cell balancing technique for lithium-ion battery stacks using a flyback dc/dc converter topology. The combination of batteries can be controlled according to the batteries voltages to implement the battery-balancing function. The operational principle of the proposed system is described in detail, then the paper develops different strategies adapting to different working status of battery pack and a series of bench experiments is conducted to examine the effectiveness of the equalization system.
Design of Electronic Control System for HCCI Optical Engine and Optical Testing
Authors: Gao Yin Han , Si Meng , Cheng Peng , Chi Jun Cheng
Published: December 2014

An optical engine system have been designed which can realize the goal of spark ignition and homogeneous charge compression ignition. This system consists of an optical engine and an electric control system. We have measured temperature in cylinder and molar coefficient of the main material (CO2, O2, N2, H2O, fuel) which has a resolution of nanosecond level and millimeter level. To realize the visualization in cylinder, extended pistons, extended cylinder liner and extended cylinder body have been designed and all of them have optical window. To realize the path of laser, a ring gasket of the laser window has been added between the original cylinder head and the extended cylinder body. An optical engine electronic control system based on SCM 80C196 has been designed to make the optical engine work in different testing strategies. The experimental results show the optical engine work well under the control of electric control system and we can detect optical Raman spectroscopy in the optical engine.