bluuebunny/crossref_metadata_2025 huggingface dataset:
A Remote Control System Based on Short Messaging Service for Intelligent Agricultural Irrigation
Authors: Huo Zhan Peng , Wei Zheng Ying , Tang Yi Ping
Published: July 2012

In view of the need of automation and informatization in water-saving irrigation, the development in short message remote control system for automatic irrigation is carried on based on SMS via communication network. According to the remote control information received by SMS (the opening and closing commands of the valves, remote irrigation inquiry commands, etc), binary codes needed by the terminal unit are generated by the remote control system to perform irrigation control or state inquiry. The information fed back by the system is firstly processed into PDU strings that conform to the format of SMS, and then are transmitted to the client (mobile phone, computer, etc) by a wireless transmission module through communication network to display the executing state in the field and the inquiry results of the system. With its stability in running, convenience in operation and being workable in use, this system is suitable for wide application in large areas.
Design of Colliery Gas Monitoring Alarm System Based on DSP
Authors: He Juan , Yuan Song Yue
Published: July 2012

A monitoring and alarm system of colliery gas has been designed with DSP technology. It has been simulated with CCS. The simulation results have shown that this system can realize the real-time on-line monitoring of the colliery gas concentration and auto-alarm when the concentration overruns.
High Energy Radiographic Testing in Railway Industry
Authors: Wan Sheng Yun , Lu Dong Lei , Liu Shi Yuan , Zhang Wen Xian , Zheng Xiao Kang , Ren Hao Juan
Published: July 2012

As the several speeds up of railway, the operated speed is more than 300km/h, and it is a serious challenge to the safe. So, bring in the high energy radiographic testing is significative. It introduces the NDT method in railway industry, and the advantage of high energy radiographic testing, and introduces several testing results of high energy radiographic testing in swing set, shows the testing is a good method to the Non-destructive testing.
Intelligent Monitoring and Energy Management Platform of New Energy Power Station in the Islands
Authors: Yang Yong Biao , Zhai Chang Guo , Ding Xiao Hua
Published: July 2012

The new energy power station in the islands is the central node with the ocean current energy,wind energy, solar energy,energy storage equipment and other types of new energy power generation confluencing,achieved intelligent monitoring and energy management for new energy power in the islands.Refer three layer and two network architecture of smart substation,presents the islands’s new energy power monitoring and energy management platform architecture,describes specific function and implementation method of the new energy power station with process layer,spacer layer and energy management layer.Based on the IEC 61850 ( Second Edition ) and IEC 61400-25 standard,the new energy power stations in the islands were standardized modelling,to ensure the platform standard and open.
Numerical and Experimental Investigations on the Expansion Tube Energy Absorber
Authors: Mao He , Luo Chang Jie , He Kai , Du Ru Xu
Published: July 2012

Expansion tube energy absorber is of interest in bumper device on the spacecraft, for example the seat-bumper and its crushing characteristics have shown an excellent performance. This paper contributes to the analysis and investigation of the crushing characteristics of the expansion tube energy absorber, by simulating the response of the 2Al2T4 expansion tube subjected to quasi-static axial compressive loading, using the LS-DYNA finite element code. Corresponding tests were conducted to serve as comparison purpose. Satisfactory level of agreement between simulation and testing results was obtained regarding the main characteristics of the tested expansion tubes such as peak compressive load, energy absorption and the overall compressive response. Formula of the crushing force deduced using plastic mechanic theory was checked. Impact model was also constructed and dynamic simulations were performed to investigate the axial impact response of the expansion tube energy absorber. The simulation results of quasi-static and dynamic compression response of the expansion tube are very similar.
Modified Interval Dempster-Shafer Theory and its Application for Target Identification
Authors: Liu Hai Jun , Nie Hong Shan , Yu Hong Qi , Hua Hong Hu , Liu Zheng
Published: July 2012

To deal with the problem of target identification caused by the achieved reliability of multi sensors and the feature measurement uncertainty of the target, this paper proposes a new identification algorithm based on Modified Interval Dempster-Shafer Theory (MIDST), which models sensor’s reliability as scalar value and identification outputs of each sensor as interval values, and then combines the actual interval outputs through interval evidence combination rules. At last, one simulation is presented to demonstrate the identification capability of the MIDST algorithm.
Pitch Angle Control Based Improved Cooperative Co-Evolution in Power Generation System
Authors: Wang Qiang , Sun Jian , Wang Ling Yun , Liao Dao Zheng
Published: July 2012

In this paper, a new controller of the pitch angle of the wind turbine is designed based on improved cooperative co-evolutionary algorithm(ICCEA). The ICCEA is based on general co-evolution model, and can choose evolutionary algorithm for its subpopulations independently, and regulate the probabilities of individuals production to promote the speed of evolutionary according to the characteristic of control system by introducing distribution function. The simulation results demonstrate that the proposed controller can efficiently and steady control the output power of the wind power generation system. Compared with the traditional PID controller, the controller has better control performance.
Robust Reliable Control for a Class of Uncertain Time-Delay Switched Fuzzy Systems Based on Observers Switching
Authors: Zhang Le , Yang Hong , Liu Xiao Dong
Published: July 2012

It is presented a model of uncertain time-delay switched fuzzy systems, which each subsystem of switched system is an uncertain time-delay fuzzy system. The robust reliable control problem is studied by multi-Lyapunov functions. When the actuators are serious failure – the residual part of actuators can not make original system stability, using switching technique depend on the states of observers, robust fuzzy reliable controller is built to ensure the relevant closed-loop system is asymptotic stability. The results for example are used to illustrate the feasibility and the effectiveness of the method.
Study of Real-Time Monitoring System on the Underground Mining Activities Based on Explosion Source Location Technology
Authors: Meng Xiu Zhi , Zhang Zeng Zhi , Wang Zong Sheng
Published: July 2012

The mining boundary ultra-layer & cross-border of some small coal mines in the profit-driven results in a many of safety accidents, waste of resources and environmental damage while the state can not achieve the full uninterrupted supervision because of the backward monitoring tools and equipment. In this situation the real-time monitoring system for underground mining activities is designed based on explosion source location technology. Small and medium-sized coal mines tunnel by blasting operations. The P waves are picked up by acceleration vibration sensors buried underground that are identified and dealt by using wavelet transform. The bursting point is located by the Geiger algorithm and displayed in the mine’s electronic map. The monitor system has good stability, small positioning error by field-proven.
The Research on Fast and Efficient Algorithm in Multi - Cameras-Relay Target Tracking
Authors: Li Xiao Ping , Liang Chun Hui , Chen Si , Cui Hui Jie , Xu Jian Qiang , Xu Qiong , Zhao Feng Nian , Mao Xu
Published: July 2012

In computer vision field, video target tracking has important significance of research. This article proposed a fast and efficient multi-cameras-relay target tracking method directed at crucial technology questions in video target tracking. First, it separated the foreground and background of monitoring scene using of Markov random field theory, and then established the Markov random field model of foreground and background, so as to accomplish the moving object recognition; The next, it located the accurate positioning and tracking utilizing the combination of Kalman filtering and improved Camshift algorithm; finally, it made more-cameras-relay target tracking on the basis of coordination and synchronous between cameras, to achieve high efficiency of tracking and strong robustness and monitoring of the wide range of target real-time tracking.
Study on the Trajectory of Pellet Fragment for Explosive Anti-Riots Munition
Authors: Ouyang De Hua , Guo San Xue
Published: July 2012

Abstract: In order to assess the safety of the explosive anti-riots munition, proceeding with the pellet fragment’s force condition was analysed in the flying process, the trajectory model of the pellet fragment for the explosive anti-riots munition was deduced, the trajectory curve of the pellet fragment were calculated and analyzed also. The results show that the air resistance and the gravitation have a significant impact on the movement of the pellet fragments, and the former is more obvious than the latter.
Gear Shifting Control for Pure Electric Vehicle with Inverse-AMT
Authors: Liang Qiong , Gao Bing Zhao , Chen Hong
Published: July 2012

In this study, the gear shifting control strategy for pure electric vehicle with inverse automated manual transmission (I-AMT) is proposed. Based on a new drive train system of pure electric vehicle, an AMESim model of vehicle drive-train system is set up. Through the precise control of sliding sleeve, clutch engagement and separating time, gear shifting process is realized without driving torque interruption. The results show that, during up and down shift process, the driving torque keeps more than 50%, obviously improve the pure electric vehicle accelerating performance and the ability to climb.
Robust Optimization Design for Spring
Authors: Chen Gang , Ma Yu Fei
Published: July 2012

In here, a robust optimization mathematical model of the spring is presented. To minimize the error and maximal variations of spring stiffness coefficient related with structure parameters and its tolerances is chosen as its objective function, and the acceptable region is formed by some constraints. The theory is applied to the structure design of the closeing spring of spring actuator, the closeing characteristics are all satisfied at the optimum structure parameters, and the optimization results are discussed.
Serial-Communication between PLC and Host Computer in Spatial Carport
Authors: Dong Shu Leng , Wang Fang , Yu Jin Lan
Published: July 2012

This paper describes the implementation of serial communication between the PLC and the host- computer in the control system of Spatial Carport, gives a detailed introduction to the communication protocols, parameters setting and also gives part of the serial-communication program based on visual basic 6.0. It shows that this control system meets the requirements as expected.
Simulation and Analysis of the Model of Calculating Contact Tangential Stiffness between Cylinders’ Joint Interfaces by MATLAB
Authors: Chen Qi , Huang Kang , Zhao Han , Zhang Yan
Published: July 2012

Contact tangential stiffness is an important parameter affecting the dynamics performance of contact bodies. To accurately calculate contact tangential stiffness between two cylinders’ joint interfaces, the fractal model of contact tangential stiffness between two cylinders’ joint interfaces is established based on the reasonable expansion of the existing fractal model and the early stage of research results. Simulation results by the software MATLAB show that: this model can correctly reflect the conclusion influenced by the parameters of fractal dimension, roughness amplitude and material properties parameters, so the model is improved true in theory. The establishment of the model laids the foundation for the following calculation of contact tangential stiffness about gears and cylindrical bearings and gives a new theory supplements to contact dynamics research.
An Optimized Algorithm for Discretization of Cutter Location Points on the Laser Cutting Path of Three-Dimensional Surface
Authors: Hu Jun , Deng Fan , Qiu Xian Chen
Published: July 2012

This paper proposed an optimized algorithm for discretization of cutter location points on the laser cutting path of three-dimensional surface. The initial discretization step size was calculated due to the curvature of the curve on the starting point and accuracy requirements. A reference sphere was established by taking the initial discretization step size as the radius. The initial cutter location point was located on the intersection of the reference sphere and the processing path. The radius of reference sphere was dynamically adjusted by dichotomy according to string height difference in order to get the optimal cutter location on the path to be processed. This algorithm has a high computational efficiency. And an automatic programming software used for three-dimensional laser cutting was developed based on this algorithm.
The Construction of Security Supervision Platform for Fireworks and Firecrackers Based on IOT
Authors: Jia Bing , Yang Yong Jian , Cui Chun Sheng
Published: July 2012

Lacking effective management means for production, storage, transportation, marketing and other aspects is the existing problems in the current fireworks and firecrackers security supervision. We propose a design method on constructing the safety supervision platform of the whole process of fireworks and firecrackers production with the background of the emerging Internet of Things (IOT for short), the use of RFID technology, combined with the 3G networks, GPS/GIS, video camera technology to constitute the architecture of the platform. In this article, we also present the crucial technology of constructing the platform and relevant implementation, including the associated matching algorithms between the RFID tags and two dimensional codes, building methods of fireworks and firecrackers quality model by theory of ontology-based context modeling. It achieves full supervision and traceability management in production, storage, transportation, wholesale and retail. And it can provide summary statistics and on-site real-time dynamic queries.
The Designment of Digital Greenhouse Expert System
Authors: Sun Jun , Zhang Feng , Chen Zhuang
Published: July 2012

In order to improve the management of crops in digital greenhouse, and give crops a healthy growth, the digital greenhouse expert system is developed based on the growth knowledge of agricultural greenhouse, computer technology and artificial intelligence technology. The expert system can provide basic information about crop growth, cultivation and management techniques, pest control and other diagnostic functions, as well as expert online answering question and so on. The development of the system is advantageous to standardize digital management of greenhouse crop cultivation, reduce the burden of planting staff, and it also can improve crop quality.
Web Roaming of 3D Taiwan Island Based on Skyline Prototype System
Authors: Wu Jing Wen , Quan Ji Cheng , Zhao Xiu Ying , Liu Yu , Wang Hong Wei
Published: July 2012

The combination of the 3D reconstruction and the internet boosts well as WebGIS. Based on Skyline prototype system, this paper studies the basic 3D environment construction and the mechanism and techniques to speed up the respond on the client side of web roaming in 3D Taiwan Island. This paper then implements a 3D Taiwan Island roaming system on local area network. The respond speed proves to be quick for web roaming of a 3D environment.
The Seismic Damage Assessment and Information Service System
Authors: Huang Zuo Wei , Huang Yuan Jiang , Xie Shi Xiong
Published: July 2012

In order to improve the information extraction technology of seismic damage assessment and information publishing of earthquake damage. Based on past earthquake experience it was constructed technical flow of earthquake damage assessment rapidly, This paper ,take Yushu earthquake as example, studies the framework and establishment of the information service system by means of ArcIMS and distributed database technology. It analysis some key technologies , build web publishing architecture of massive remote sensing images. The system implements joint application of remote sensing image processing technology, database technology and WebGIS technology, The result could provide the important basis for earthquake damage assessment ,emergency management and rescue mission.
Constrained Optimization Solution Based on an Improved Genetic Algorithm
Authors: Li Chun Yan , Zeng Guang Hui
Published: July 2012

A hybrid adaptive genetic algorithm is proposed for solving constrained optimization problems. The algorithm combines adaptive penalty method and smoothing technique in order to get no parameter tuning and easily escaping from the local optimal solutions. Meanwhile, local line search technique is introduced and a new crossover operator is designed for getting much faster convergence. The performance of the algorithm is tested on thirteen benchmark functions and the results indicate that the proposed algorithm is robust and effective.
Multivariate Decision Tree Algorithm Based on Rough Set
Authors: Liu Bing Xiang , Wu Yan , Li Meng Shan
Published: July 2012

The decision tree is a widely used classification model and inductive learning method based on examples. It is characterized by the simple classification rules, easy understanding for users and so on, but we also can see some disadvantages in certain situations. The paper puts forward the multivariable decision tree algorithm which based on a rough set to a combination of rough sets theory and decision tree algorithm. The multivariable decision tree algorithm has reduced the complexity of decision tree while not affect the readability of the classification rules. Experimental analysis has witnessed the feasibility and efficiency of the algorithm.
Secret Image Sharing with Threshold Set
Authors: Tang Dan , Liu Kui
Published: July 2012

Secret image sharing is an attractive research problem in information security filed. According to the high redundancy of the digital image, the paper proposed an entirely new secret image sharing scheme with threshold set. The new scheme makes secret image sharing more flexible, so we can apply the secret image sharing technology to more fields such as the storage of secret images, multichannel transmission of images and etc..
Numerical Analysis of Multi-Pass H-Beam Hot Rolling Processing
Authors: He Qing Qiang , Sun Jia , Zhao Jun You , Yuan Bao Min , Xu Li Jian
Published: July 2012

Hot rolling is a basic metal forming technique that is used to transform preformed shape into final products of forms more suitable for further processing. As the hot stock progresses through the forming surfaces, the shape eventually reaches a constant state. With the assumption of forming process has reached steady-state condition, a simulation technique based on elements re-meshes has been constructed to analyze the H-beam metal hot roll process. The technique includes the following approaches: the solution was halted as soon as the steady-state criteria were met, and the plane of elements, which first satisfied the steady-state criteria were written to database, SSES for short; a two-dimensional model was created to model the hot stock cooling between the two roll passes and a geometric part was generated and meshed with quadrilateral elements to transfer the nodes temperatures; a new three-dimensional model extruded from the two-dimensional model was constructed to model the next roll pass with the transfer of nodes temperatures and element integration points equivalent plastic strain(PEEQ), identifying the plastic deformation extent for the classical metal plasticity models, from the new two-dimensional model and the first three-dimensional model respectively. Gleeble-1500 tester is used to get the true stress and true plastic strain data for modeling the yield behavior of material Q235. The effectiveness of the simulation technique has been proved by a simulation of 11-pass H-beam rolling process.
Detection and Evaluation of Corrosion Damage under Coating by Infrared Thermal Wave Technology
Authors: Jin Guo Feng , Huang Zhi Yong , Zhang Wei , Yang Zheng Wei , Zhu Lu
Published: July 2012

Aims at the safety problems caused by corrosion under coating for it can not easily be observed, specimen of corrosion damage under coating was made for the research of detection by applying infrared thermal wave technology. The surface temperature distribution infrared thermal images were captured, also the surface temperature history of corrosion area, non-corrosion area and their difference. Analysis of test results show that the infrared thermal wave technology is an effective tool in detecting corrosion damage under coating, there has a fine detection time used to estimate the coating thickness, and the position and sizes of defects can be found out directly by the hot spots in the infrared images. The damages can be quantitatively recognized by images processing, but surface uniformity of the specimen has great impact on the damage identification.
Effect of Ca and Rare Earths on Compressive Creep Behavior of Mg-4Al Alloy
Authors: Du Chun Ping , Xu Dao Fen , Wang Bin Wu
Published: July 2012

The effect of Ca and rare earths on compressive creep behavior of Mg-4Al alloy was investigated with a special apparatus. The microstructures were analyzed by OM, XRD, SEM and EDS before and after compressive creep test. The results reveal that a small amount of Ca was added into AE41 alloy in order to refine the crystalline structure and improve the creep resistance. Comparing with NdPr rare earths alloy, the creep resistance of LPC rare earths alloy decreases, but is still better than AE41 alloy. The as-cast microstructure of AE41 alloy is mainly composed of α-Mg matrix and Al11Nd3 phase. The acicular Al11Nd3 phase is prone to decompose at high temperature, which leads to the poor creep resistance of AE41 alloy. The acicular Al11RE3 phase is gradually replaced by Al2Ca and Al2RE with Ca addition into AE41. LPC rare-earth mixture is in cluster at grain boundaries so that the creep resistance is worse than that of alloy containing NdPr rare-earth mixture.
Mechanical and Thermal Simulation of a Multi-Functional Hybrid Composite
Authors: Wu Zhi Hua , Xiao Jia Yu , Jiang Da Zhi
Published: July 2012

Hybrid composites are increasingly concerned by the investigators and widely used in many areas, especially aerospace industry, for its multi-functional properties. In the present study, the mechanical properties and thermal properties of a structural component manufactured by a new hybrid composite consisting of quartz fiber, carbon fiber and cyanate ester resin has been investigated by finite element numerical simulation. The results show that the mechanical properties of the structural component are very good. And the temperature of inside face is 43.8 °C. The thermal strain is lower than 0.15%.
Phase Field Method Simulation of Dendrite Crystal Growth of Metal Nickel Based on Fractal Theory
Authors: Ruan Zhi Yi , Zeng Sheng Da , Lin Li Xin , Wu Lu Rong
Published: July 2012

Using fractal theory simulation of dendrite crystal DLA growth model of pure substance, the undercooling during solidification process of crystal nucleation is simulated; and then in the crystal nuclei are formed on the basis of a pure substance, the phase field model and combined with the finite difference method further differentiation simulation of dendrite crystal growth. According to MATLAB programming, the simulation results obtained by field and temperature field can be seen in the DLA growth, growth model with random premise, for the same kind of material simulated dendrite crystal have both similarities and differences exist. Then, we can get the conclusion, through fractal growth of DLA model with phase field model of dendrite nucleation, growth process is carried out the simulation results, a simple by phase field model is more accord with the dendrite crystal in the experiment.
Study on TiCN/Ti Based Composite Coating Fabricated by Reactive Electric Spark Deposition
Authors: Hao Jian Jun , Gao Liang , Yang Shu Hua , Li Xiong Zhuang , Ma Yue Jin
Published: July 2012

In order to improve the wear-resisting properties of titanium alloy surface, reactive electric spark deposition was carried out using a graphite electrode in a nitrogen gas atmosphere, and TiCN/Ti based composite coating was fabricated on TC4 titanium alloy surface. The surface morphology, microstructure, interfacial behavior between the coatings and substrate, phase and element composition of the coatings were investigated by scanning electron microscope（SEM), X-ray diffraction (XRD) and Auger electron spectroscopy (AES). The microhardness hardness distributions as a function of depth were measured by a micro-hardness tester. The results show that the coating about 20μm thick is continuous, close, and completely covering the substrate surface and mainly composed of the TiCN phase which is in-situ synthesized by the reaction among titanium from the substrate, carbon from the graphite electrode and nitrogen from the shielding nitrogen gas. The coating has a strong metallurgical bonding and adhesion to the substrate. Microhardness profile falls off with the coatings thickness increasing and the highest microhardness values of the superficial coating could be up to 1496HV, which is six times more than that of the substrate.
Ultrasonic-Assistant Dispersive Liquid-Liquid Microextraction Based on Solidification of Floating Organic Droplet Method for Quick Determination of Polycyclic Aromatic Hydrocarbons in Soils
Authors: Zhang Chen , Jiang Long , Meng Chong , Li Xiao Peng , Li Yu
Published: July 2012

An ultrasound-assisted dispersive liquid-liquid micro-extraction method based on solidification of floating organic drop (UAE/DLLME/SFO) was established for the determination of PAHs in soils. Dichloromethane was used as solvent for the analytes in the soil by ultrasonic assistant extraction (UAE), the solvent was purified and concentrated by silica gel column chromatography and nitrogen flowing concentrator, respectively. The recoveries of the method were in the range 46.22-101.86%, and the relative standard deviations (RSD) were 3.03-7.80%. The linear range was 0.02-0.4mg/kg（0.02-0.5mg/kg）, and the limit of detection (LOD) was 0.17-29.13µg/kg. The method was applied to the real soil samples around wells of an oilfield; the relative recoveries of the ANY, ANA, FLU, PHE, ANT, FLT, PYR, BaA were 47.12-116.96%, while the recoveries of NAP, CHR, BbF, BkF, BaP, DBA, BPE, IPY were 17.75-63.29%.
Modeling and Application of Combustion Process in Gasoline Engines under Transient Conditions
Authors: Li Yue Lin , Dong Shi Tao , He Xing , He Jiang Tao , Zuo Cui
Published: July 2012

In this paper，a model for working process simulation of gasoline engines was developed under transient conditions. Therefore，the working process of gasoline engines could be described on theoretical basis. The computer program was edited. The results of simulation are agreed perfectly with that of test，and can provide support for design and study of transient emissions.
Cultivation Management and Standard Library Automatic Query System of Digital Greenhouse
Authors: Sun Jun , Zhang Guo Qing , Chen Zhuang , Gao Lei , Li Jun Ming
Published: July 2012

The research and applied technology about agriculture are attracting increasing attention, and especially digital greenhouses have become an important part of efficient agriculture. In this paper, basing on the environmental factors and crops growth status information, management system sorts out, analyzes and summarizes the data to give the best environment parameters for different crops in different external environment and to give the best growth parameter value for crop in different growth stages. A standard database of digital greenhouse will be built in this paper. Basing on the database, automatic identification and query model will be built. The system will provide daily operation schedule for crops during the whole growth of crops. And all kinds of growth parameters information in the process of crops growth will be analyzed by the system. Then the system compares the crop growth situation with standard database and sends the abnormal information to users timely. Simultaneously, real-time video monitoring can be used. Some daily routine work information can be recorded and suggested, such as watering, fertilizing and weeding etc. Based on crops growth and development patterns, the environment conditions are controlled and high quality, high yield, and efficient cultivation of plants will be realized.
A Speed Smoothing Algorithm in Micro Segment High-Speed Machining
Authors: Luo Lei , Hu Jun , Deng Fan
Published: July 2012

A forecasting speed smoothing algorithm based on inflexion velocity has been presented in this paper. According to the geometry characters of the machining trajectory, the inflexions in CNC machining tool path can be confirmed by using the designed algorithm. The line segment between each inflexion can be treated as a continuous path that can be tracked under the continuous feed rate. Moreover the maximal permitted link-up speed can be calculated through dynamic restriction equations and the real-time modification of sinusoidal acceleration can be realized by using the speed iteration algorithm. By simulation analysis, it can be revealed that both the flexibility and efficiency of the CNC machining has been improved and the impact to the machine tool has been greatly reduced.
Automated Visual Inspection of Contact Gap and Contact Malposition of Automotive Relay
Authors: Hsieh Chen Huei , Tsai Chi Sheng , Tseng Ting Yu , Wong Yi Sheng , Zhou Shi Zhen
Published: July 2012

The gap and the malposition of the contact of automotive relay would heavily influence its life. If the gap and the malposition of all relays can be fully inspected and the inspection operation can be incorporated into the existing automated manufacturing and testing equipment, the quality will thus be significantly promoted. To reach this goal, a visual inspection system based on the platform of LabVIEW has been developed in this paper. The visual inspection system is capable of performing the inspection of the gap and the malposition of electrical contact in 1.6 seconds for one relay, and the whole automation system can manufacture one relay for every 2 seconds.
Development of a Computer Integrated Testing System for Humanoid Robots Ex-Work Inspection
Authors: Tsai Chi Sheng , Hsieh Chen Huei
Published: July 2012

The humanoid robot is a combination of biped, intelligent and mimetic robot to serve human beings in non-production sectors. Since it is a very complicate automatic walking and working machinery, and it works interactively with people in daily life, its correctness and reliability in terms of its functions and performances need to be checked intensively after final assemble and before it is shipped. A novel developed computer integrated testing system (CITS) to inspect every ex-work robot before shipping with the appearance, motion, walking, sensing and recognition, intelligence as well as possessed service expert knowledge is developed in this paper. The use of this fully automated CITS will simplify the human intervenient inspection and testing of the humanoid robot, shorten the testing time and cost, and avoid human errors while in manufacturing, software loading and ex-work inspection.
A New Kind of Optimization Method for Gear Design
Authors: Wu Yu Guo
Published: July 2012

In order to raise the design efficiency and get the most excellent design effect, this paper combined Particle Swarm Optimization (PSO) algorithm and put forward a new kind of neural network, based on PSO algorithm and NARMA model. It gives the basic theory, steps and algorithm; The test results show that rapid global convergence and reached the lesser mean square error MSE) when compared with Genetic Algorithm, Simulated Annealing Algorithm, the BP algorithm with momentum term.
Path Planning for the Chassis of Duct-Cleaning Robot Based on Ant Colony Algorithm
Authors: Zhu Qian , Sun Wei , Zhou Zhi Wei , Zhang Su Wei
Published: July 2012

For the path planning for the chassis of duct cleaning robot in an obstacle environment, ant colony algorithm and grid method are adopted to achieve an optimal path between two different arbitrary points and establish the environment model. The results of computer simulation experiments demonstrate the effectiveness of ant colony algorithm applied in path planning for the chassis of duct cleaning robot.
Ship Rolling Motion Prediction Based on Wavelet Neural Network
Authors: Wang Yu Chao , Liu Fan Ming , Fu Hui Xuan
Published: July 2012

The traditional time series predictive models are not able to achieve a satisfying prediction effect in the problem of a non-linear system and nonstationary time series. To solve these problems, ship course time series prediction, which is based on back propagation wavelet neural network structure and algorithm, was proposed. It combined wavelet analysis and neural network characteristics, and employed the nonlinear Morlet wavelet radices as the activation function. This method was applied to ship rolling motion prediction, and simulation results showed the validity to improving the prediction accuracy.
Structure Design and Analysis of Rescue Robot
Authors: Cheng Hong , Fan Hong Chao , Lin Hai Fei , Li Cong , Mao Yu Peng , Yi Xin Hua
Published: July 2012

It becomes the urgent and necessary to the development about wide range of manufacturing a multi-functional and human intelligence rescue robots because of difficulty of rescuing the wounded person in a disaster such as earthquakes and other disasters. A rescue robot prototype has been designed, assembled and commissioned based on the rescue mission and rescue needs of the students in Zhejiang Province mechanical design contest. The rescue robot is able to implement going through the tunnel and the bridge, removing the rescue objectives and other actions tasks. The rescue robot has a structure of four-wheel drive, variable center distance which can improve the ability of walking on the bridge and grabbing the rescue target by suction cups to complete the contest tasks. Experiment verified that the design of actuators and control system is reasonable. It took a total of 1 minute 18 seconds to complete the rescue work in Zhejiang Province mechanical design competition.
Trajectory Planning of Knot-Tying Manipulation in Surgery
Authors: Xiao Jing Jing , Yang Yang , Wang Zhe
Published: July 2012

Due to demands for stability, accuracy and lower postoperative complication in surgery, robotic surgical assistants may assist surgeons by performing specific subtasks such as suturing and knot-tying to reduce surgeon tedium and duration of some exhausting operations. To improve the surgical knot quality and accelerate healing for patients in surgery, trajectory planning of suture clamping point in knot-tying manipulation using a master-slave robot is discussed based on the surgeon’s manual motion of knot-tying. First, the manual knot-tying process is described, and then according to task sequences, trajectories planning of suture clamping point in looping step based on motion synthesis of rotating joint and swinging joint and pulling step based on slip knot theory are proposed separately to form a knot. To verify the reasonability of trajectory planning, knot-tying motion is simulated by Solidworks. And finally the knot-tying experiment is implemented on the specific robotic setup. The results show that the proposed trajectory planning of knot-tying is feasible in the automation of surgical knot-tying manipulation.
Application of Compensation Wheel on Satellite
Authors: Gan Ke Li , Ge Sheng Min , Wang Lei
Published: July 2012

Some satellites employ payloads with rotating parts of which the motion degrades satellite stability and pointing accuracy. In this paper, to satisfy satellite attitude requirement, a system using two compensation wheels to counteract space turntable momentum is presented, which adopts mechatronics design and considers the inertia property variation of rotating part. A double closed loop controller is introduced for this compensation system. The system analysis and simulation are given, and the simulation results reveal this system has a satisfied performance.
Tool Path Generation Algorithm Based on the Double Spiral Filling Curve
Authors: Gong Jiang Bo , Luo Lei , Hu Jun
Published: July 2012

The steering frequent problems in the five-axis NC machining tool path planning based on space-filling curve method was researched, then a double spiral space-filling curve was proposed. Owing to frequently reverse, it was adopted that an arc on transition instead of the right angle, so the impact in tool and the part in machining process was reduced. Combined with the free surface, the plane filling curve with the surface parameters corresponding to the mapping on the surface thereby generated the idea of machining tool paths. Finally, the method was used for a specific surface, and the effectiveness of the method was verified.
Designs of Eddy Current Sensor Probes Based on Multilayer Printed Circuit Board Technology
Authors: Zhang Kai , Dai Xing Jian , Zhang Xiao Zhang
Published: July 2012

Probe characteristics are important for eddy current displacement sensors. Probes made by multilayer printed circuit board (PCB) are good at maintaining quality consistency and their axial length was short. As design principles for wired probes were not suitable for PCB probes, an analysis and design method for them was developed. In this paper, PCB probe characteristics were first analyzed with 3D eddy current field FEM software. The process was time-consuming. To increase analysis efficiency, a simplified 2D axial symmetry model was used to replace the 3D model. The analysis results were compared and their difference was small. The probe resister and inductance were compared with measurement result of a test PCB probe and they agreed well. Based on 2D model, a series of analysis was performed and basic design principles for PCB probes were obtained. Based on the principles, a new PCB probe with better performance was designed.
The Design of the Giant Die Forging Hydraulic Press Synchronous Control System and its Dynamic Simulation
Authors: Liu Zhong Wei , Deng Ying Jian
Published: July 2012

The giant hydraulic press is the essential equipment of our country national defense and the infrastructure. The hydraulic synchronous control system is the important constituent of the hydraulic press, it is very important in improving the dimension accuracy of the product, ameliorating the force standing state of the die forging hydraulic press frame, extending the life of the die forging hydraulic press body and the moulds. To use 300 MN die forging hydraulic press’s synchronous control system for reference, according to a giant die forging hydraulic press its own characteristics, design the synchronization control system. Through the establishment of the mathematic model of the system, and choose the sliding mode-PID control strategy and simulation, the results show that :using PID sliding-mode control strategy of synchronous control system, the eccentric moment after stability, can over a short period of time after the stagnation, quickly will move back to level calibration beam position, get close to zero static deviation. But using the common sliding mode-PID can not overcome the disturbance bringing by the parameter perturbation, so the corresponding nonlinear and intelligent control strategy is particularly necessary.
The Study on Released Holes of Flameproof Submersible Pump with Inner Motor for Coal Mine
Authors: Wang Xiu Lan , Cao Wei Dong
Published: July 2012

The ANSYS ICEM was used to build the meshes in the impeller, volute, the sealing rings clearance and the other whole flow field of the flameproof submersible pump with inner motor for coal mine BQW50-70×5-132/N for further simulation, and two outlets were set here and the inner flow character of the pump was simulated. The axial force was numerical analyzed with the changing of the sealing rings gap and the changing of the area of balance hole. Finally, three balance holes, with a total area of 2400mm2, 0.2mm sealing rings gap are taken based on this study.
Real-Time Simulations for Design of Active Safety Systems for Multi-Trailer Articulated Heavy Vehicles
Authors: Ding Xue Jun , He Yu Ping
Published: July 2012

This paper introduces a design of active trailer steering system (ATS) for multi-trailer articulated vehicles (MTAHVs) using driver-software-in-the-loop (DSIL) real-time simulations. A yaw-plane MTAHV model is developed to derive an ATS controller. Then, the real-time versions of the controller and MTAHV models are constructed in LabVIEW and TruckSim, respecitvely. With the integration of these models, the real-time simulations are conducted with a vehicle simulator. The simulations indicate that the controller can effectively improve the MTAHV’s directional performance under the specified test maneuvers.
A Method on Establishment TCM Symptoms Diagnosis Criteria
Authors: Chen Chu Xiang , Yao Shi Jun , Wang Yun Cheng , Zhou Chun Hua
Published: July 2012

Establishment of symptoms diagnostic criteria and treatment effect evaluation index system of Traditional Chinese Medicine is to improve the basic means of scientific medicine. A rational model of TCM symptoms diagnosis is to establish formation of effective evaluation index system. The study is base on the clinical data of bacterial pneumonia in the elderly. First pre-treatment basic data is proceeding. Then deleting unnecessary targets and discovering the core indicator set using Pawlak data reduction algorithms based on rough set theory, the core indicator set is determined as the diagnostic criteria of bacterial pneumonia for the elderly. The modeling method of Chinese medicine diagnosis symptoms on bacterial pneumonia for the elderly has worthy of promotion in Chinese medicine diagnosis symptoms.
Application of Time-Frequency Analysis and Back-Propagation Neural Network in the Lung Sound Signal Recognition
Authors: Chen Mei Yung , Huang Chien Chou
Published: July 2012

In the diagnosis of the respiratory diseases, auscultation is a non-invasive and convenient diagnostic method. In the digital auscultation analysis, what method we use to analyze the lung signals which microphone recorded will affect the results of the experiment greatly. The purpose of this study is to use frequency analysis and time-frequency analysis to analyze the six lung sound signals, which are vesicular breath sounds, bronchial breath sounds, crackle, and wheeze. Finally, the study transformed the analysis results into the characteristic images, and put them to the back propagation neural network for training. After that, the study compares the results of the two methods. We also analyze the realistic lung sound signals and simulated lung sound signals, and compare the results finally. First, we use the piezoelectric microphone and data acquisition card NI-PXI 4472B to acquire LS signals, and signals preprocessing. Then we use Visual Signal to analyze the lung sound signals by time-frequency analysis. We also analyze the lung sound signals which are from the auscultation teaching website. Finally we compare the result of two kinds of signals, and assess their similarity and accuracy by the test of back-propagation neural network. According to the result of this study, we found that time-frequency analysis provide much information about the lung signals, and are more suitable as a basis of diagnosis, and increase the recognition rate of the back-propagation neural network.
Based on Unit Impulse the Signal of Function Analyse with System
Authors: Zhang Wei Xi , Zhang Li
Published: July 2012

This paper rushes from unit to surge to make in the theoretical intension of function the unified theory and method that signal divides into to fold , this theory is normalized more , is clear.
Crack Detection of Nonlinear Rotor in Large Rotating Machinery
Authors: Zou Jian , Shen X.L. , Li S.D. , Hu C.Q.
Published: July 2012

To detect crack of nonlinear rotor in large rotating machinery, the correlation dimension is introduced, which is calculated through G-P algorithm. The optimal delay time is derived from autocorrelation function, and the pseudo-phase portrait of cracked rotor is investigated. The influence of embedding dimension and data length on the correlation dimension is studied thoroughly, and the accurate value of correlation dimension is obtained, which can provide a basis for crack identification.
Damage Diagnosis of Cable of Large Span Cable-Stayed Bridge Based on the Support Vector Machine
Authors: Tan Dong Mei , Qu Wei Lian , Zhang Jian Bo , Wei Guang Qiong , Liu Jia
Published: July 2012

The dynamic characteristic of cable damage is calculated of Tianxingzhou long-span cable-stayed bridge. Firstly, a normalized natural frequency is defined and the affection of cable damage on normalized natural frequency is analyzed. Through comparative studies came to the following conclusion: the damage effect on the natural frequencies of different levels of cable mode are essential differences, thus establishing a description of cable damage model based on support vector machine, the different damage cases are used to train and recognize. The numerical example shows that the method can be effectively used to identify the damage of cable of long-span cable-stayed bridge.
Distributed Optical Sensor Network with Self-Monitoring Mechanism for Accurate Indoor Location and Coordinate Measurement
Authors: Yang Ling Hui , Wang Yi , Zhu Ji Gui , Yang Xue You
Published: July 2012

In order to provide accurate and robust indoor location service for large-scale mechanical manufacturing, a sensor network consisting of laser transmitters and optical receivers is proposed in a distributed framework. Geometric model described by rotating plane equations is established, re-ceiver’s location algorithm is achieved by utilizing intersection constraint of multiple laser planes form different transmitters. A self-monitoring mechanism for sensor network is also presented by introducing redundant fixed receivers as reference. Experiment has shown that the measuring accu-racy of a minimal sensor network is better than 0.2mm and self-monitoring mechanism can effectively guarantee the accuracy of the measurement results.
Engine Gearbox Fault Diagnosis Using Modified Elman Neural Network and ACO Algorithm
Authors: Wu Hai Chao , Song Chong Zhi
Published: July 2012

Analyzed the shortcomings of Elman network, the paper put forward a modified Elman network, combined Ant Colony Optimization (ACO) algorithm to train the modified Elman network, and implement trained NN (Neural Network) to fault diagnosis of engine gearbox. Using conventional ’frequency domain’ analysis method, modified Elman network fault diagnosis of the gearbox was carried out. The results proved that fault diagnosis of engine gearbox based on the modified Elman neural network and ACO has better precision and diagnoses gearbox effectively, which imp roves the effectiveness and quality of the diagnosis.
Motion Analysis of 35 Tons Steel Coil Overturning Machine based on COSMOS Motion
Authors: Wang Feng Hui , Li Hong Bo , Ma Bei Yi
Published: July 2012

In this paper, the 35 tons steel coil overturning machine is used in metallurgy industry. Its own weight is very great, the weight of the steel coil is also very great, whether can realize the smooth movement is a very crucial problem .By using COSMOSMotion to simulate and analyse the movement function of overturning machine, some graphics can be obtained. Through graphics some Performance parameters can be collected. Motion analysis promotes the reliability of the design also provide extremely important design parameters for the design of the overturning machine. So COSMOS Motion can provide the theoretical foundation for the product design.