bluuebunny/crossref_metadata_2025 huggingface dataset:
The Pyrolysis Efficiencies of Oxidized Mercury Using Different Thermal Conversion Materials in on-Line Total Gaseous Mercury Monitor
Authors: Ye Hua Jun , Ke Liang , Guo Gai Zhong , Chen Xun Long , Yang Tie Jun , Huang Wei , Hua Dao Zhu , Pan Chang Jin
Published: March 2013

The pyrolysis of oxidized mercury is one of key techniques for the conversion of species mercury from ionic form to elemental form. At present, thermal pyrolysis technique has been more and more used in on-line total gaseous mercury monitor for its high conversion efficiency and less time consuming maintenance. We investigate the pyrolysis efficiencies of oxidized mercury using SiC, nickel (Ni) and nichrome as thermal conversion materials in converter. The results reveal that compared with SiC material, the nickel (Ni) and nichrome can provide high pyrolysis efficiency. Particularly, the nichrome that contains 15% chromium (Cr), 75% Ni and 8% Fe can achieve 8.7% higher conversion efficiency than SiC at 800 °C. The results demonstrate that the nichrome that contains 15% chromium (Cr), 75% Ni and 8% Fe is an appropriate thermal converting material for the on-line total gaseous mercury monitor.
Study on the Effect of 1,2-PDO and DEA on Reaction Efficiency of Alcoholysis Processes for Rigid Polyurethane Foam
Authors: Tan Qin Liang , Wei Yong Mei , Wang Min Nan , Liu Yuan
Published: March 2013

The reaction efficiency of rigid PU foam alcoholysis in different conditions is studied in this research. The 1,2-propanediol and DEA are respectively used as alcoholysis agent and catalyst in the experiment. The influence of 1,2- propanediol/rigid and DEA/rigid PU foam weight ratios on the decomposed product is examined, and the respective alcoholysis efficiencies are also investigated. According to the experiment, two weight ratios (i.e. 2:1 for 1,2-PDO/rigid PU foam, and 0.1:1 for DEA/rigid PU foam) can be identified to make the reaction more efficient with less 1,2-PDO and DEA inputs.
Wavelet Fusion Application in Water Quality Warning Based on Bio-Detection Technology
Authors: Wang Yi Hong , Chen Jun , Tao Shi Feng
Published: March 2013

In water quality early warning system based on the abnormal behavior of fish, the core technology is building the fish movement model and obtaining the movement parameter based on this model. The fish body image accurate segmentation is the key to the implementation of this core technique. The single edge detection method can not accurately detect fish all edges. In the paper, the proposed solution is that the original image is firstly segmented by Canny operator and Log operator respectively and then the two segmented images are fused based on the wavelet transform. The fused image will obtain more complete target information from the two segmented images. The fish image acquired by the machine vision is processed according to the idea. The result shows that this method can obtain better edge detection effect. It will provide technical support for the live fish movement modeling.
Rapid Determination of Sulfite by Flow Injection Analysis Based on Fuchsin′s Addition
Authors: Yuan Dong , Fu Da You , Tan Wen Yuan
Published: March 2013

A rapid spectrophotometric method for flow injection determination of sulfite in tan wastewater is described. The proposed method was based on the addition reaction of sulfite with fuchsin in Na2B4O7-NaOH medium. The optimum conditions allow a linear calibration range of 0.01-1.20 μg ml-1 SO32-. The detection limit is 0.0023μg ml-1 (S/N=3), and the relative standard deviation for night replicate measurements is 1.1% for 0.5μg ml-1 of sulfite. The sampling rate is 60 samples h-1. The procedure has been applied to the determination of sulfite in tan wastewater. The results were in good agreement with those obtained by pararosaniline method.
Measures on Ecological Design to Improve the Export Trade of Animal Derived Foods in Hunan Province
Authors: Liu Xing
Published: March 2013

Hunan province ranks highly in exporting Animal Derived Foods in the country. This study begins from the current export situation existing problems of Animal Derived Foods of Hunan province in recent years, proposes the ecological designing measures for these existing problems, to Implement quality and safety management by HACCP mode, promote garden-like and low carbon breeding ecological farming model, implement ecological function regionalization & develop local featured breeding, improve the eco-efficiency and construct a featured mode of industrial organization, establish international standardization system for poultry meat products，so as to promote a healthy development of the animal husbandry in Hunan province and actively boosting its exports.
Simulation for Transient Performance of Steering of 8×8 Wheeled Vehicle Based on ADAMS
Authors: Liu Chun Guang , Yang Gui Bing , Liao Zi Li , Zhang Yun Yin , Yan Yu Lin
Published: March 2013

In order to analysis the sensitivity and follow characteristic in steering of 8×8 wheeled vehicle, virtual model of 8×8 wheeled vehicle is constructed by ADAMS/Car. Doing simulation for transient performance of steering for virtual model according to the appraise of yaw velocity peak value at 70% of highest speed. The analysis result shows the better sensitivity of the model.
The Elimination of Heavy Metal-Containing Wastewater by Eggshells Membrane
Authors: Liu Ning , Liu Ya Nan , Luan You Shun , Hu Xiao Jie
Published: March 2013

In this study the eggshell membrane adsorption for chromium, cadmium, copper in the wastewater was investigated through the discussion of the amount of eggshell membrane, adsorption time, adsorption temperature, as well as the removal efficiency under the optimum conditions. The results show that for the Cr6+、Cd2+、Cu2+ in the simulated wastewater solution, the optimum dosage of eggshell membrane were 1.2g、1.0g and 1.2g, the best adsorption time were 45min、30min and 60min, the optimum adsorption temperature were 50°C、70°Cand 70°C, respectively.
SOC Estimation of Lithium-Ion Battery Packs Based on Thevenin Model
Authors: Fang Yuan Qi , Cheng Xi Ming , Yin Yi Lin
Published: March 2013

Due to the immeasurability of SOC in battery and inevitability of error in current collection, SOC estimation of Lithium-ion battery has become a focus of EV research. With Thevenin equivalent circuit model, this paper employs EKF algorithm to estimate SOC, which takes into consideration both precision requirement of the estimation and amount of computation involved in online estimation. Based on above-mentioned objectives and principles, a test platform composed of Digatron battery test system and thermostat was built. Experimental result has confirmed that the combination of EKF algorithm with Thevenin model can improve precision and reduce amount of computation.
Modal Analysis for the Tower of Large Scale
Authors: Zhou Jie , Ma Ji Sheng , Deng Hui Yong , Zhang Mei Yin , Wu Bao Jian
Published: March 2013

The rocket launch tower is a kind tower of large scale which is used in many important palces, in order to counter the tower faults problems such as leaning, bulking, etc.According to the theory of multimodal analysis, mathematical modeling and simulation of vibrational mode were conducted for the tower. The paper describes how the finite element modal for steel tower is built by means of beam and shell elements by Patran, and the analysis of the tower’s dynamical characteristic, bulking phenomenon employing commercial software Patran/Nastran,show that the results are closer to the test data,providing a basis for the tower optimal design.
The Topological Synthesis Design of Hybrid Electrically Variable Transmission
Authors: He Rong , Hu Ji Bin , Peng Zeng Xiong , Liu Wen Cui
Published: March 2013

A new method of the design of Hybrid Electrically Variable Transmission that can make the computer design automatically was proposed. The graph model of EVT Transmission was propounded and the point represents the component and the line represents the connections. The different connections of EVT Transmission were labeled different number. The planarity of graph model was tested by D.M.P algorithm and the infeasible structure was removed. The mechanical linkages can be compared for isomorphism by the improved algorithm called linkage characteristic polynomial. The transmission was compared for isomorphism by local isomorphism test. The calculation outcome shows that the method can be used to the design of Hybrid Electrically Variable Transmission of vehicle.
Design of Intelligent Street Light Control System Based on ZigBee
Authors: Li Xiang Yang , Zhang Wei Qiang
Published: March 2013

The design uses ZigBee wireless networking chips to connect each street light, ZigBee coordinator of the sub-control center responsible for the formation and maintenance of street lights subnet. The ZigBee coordinator collects all streetlights information and sents to the main control center via GSM module. The main control center sends control commands to the sub-control center via GSM module, and then to each street light controller. It is low-cost, easy to install and maintain.
The Research on Rake-Car’s Driving System of Ore Reclaimer
Authors: Li Yuan Hui , Chen Kui Sheng , Deng Jiang Hong , Chen Xin Yuan
Published: March 2013

Rake-car’s driving system of ore reclaimer originally used crank and connecting rod mechanism as driving mechanism. The driving mechanism got some trouble that parts got severe wear and failure rate of mechanism was high. The hydraulic system is used to drive rake car in view of hydraulic driving system’s advantage. By analysis on existing problem of crank and connecting rod mechanism, the actual working load of equipment is tested and the working situation is analysed. The working situation of the hydraulic system is also analysed by computer simulation. By optimization of the hydraulic system design, the final design is determined. The whole system is actually used. It works well.
Novel Equivalent Circuit Model for Spiral Inductors on Lossy Silicon Substrate
Authors: Zou Juan , Tang Zhe Nan
Published: March 2013

Abstract. A fast and accurate equivalent circuit model for spiral inductors on lossy silicon substrate is presented and the parameters of the model are extracted without applying any fitting and optimized methods. In this model, the lateral resistance and inductance of substrate are introduced to model the eddy-current losses induced by magnetic coupling between the spiral and the substrate. FastHenry method is used to extract the inductances of spiral, substrate, and the mutual inductance between them. A numerical formulation is used to efficiently capture the proximity and skin effects in metal tracks. The proposed model is used to predict the performance of two typical spiral inductors fabricated in CMOS technology. The model shows excellent accuracy and efficiency by the comparison with measure results at the frequency from 100MHz to 10GHz.
Analysis for the Syngas Composition of Gasifier
Authors: Chen Shao Hua , Lee Kuang Chyi , Li Kuang Chih , Chang Yin Shiuan
Published: March 2013

A simple and convenient model to analyze the composition of the syngas has been implemented. We collect thermodynamic properties data from JANAF tables and Turns’ book. By regression analysis the Gibb’s energy functions of temperature were got. Through these functions, the equilibrium constants as functions of temperature can be deduced for the related chemical reaction in gasification process. With the equilibrium constants, the model to calculate the equilibrium composition for pure carbon gasification has been established. The model was improved from considering only isothermal reaction to including reaction heat balance and then finally with fully energy balance consideration. Since the model has been implemented on general software Excel, it will be very easy for users to apply in further study. Finally, we show how precise the estimation could be by doing comparison with early study and utilize this tool to analyze the heat balance for a specific IGCC cogeneration power plant.
Determination of Stator Temperature Distribution for a Synchronous Machine
Authors: Yuan Bo Qiang , Wu Xin Zhen
Published: March 2013

For studying the influence of the stator ventilation structure on the thermal performance of a synchronous machine, the mathematical model of the stator three-dimensional temperature fields is set up and the corresponding equations solved. The calculated results of the stator temperature are compared between different number of the radial ventilation ducts, which provides a theory foundation for the analysis and design of the cooling system and improves the safe operation condition of large synchronous machine.
Experimental Study on Combustor Outlet Temperature Field of Gas Turbine
Authors: Liu Kai
Published: March 2013

Experimental study on combustor outlet temperature field of heavy-duty gas turbine had been finished on high-pressure test system. Experimental results indicate: The OTDF is sensitive to diameter of dilution holes, and the RTDF is sensitive to location of dilution holes. The test results have important guiding significance and reference value to design, commission and working about the similar combustor.
The Influence of Wheel Rotating to FSAE Racing Car Aerodynamic Characteristics
Authors: Shao Shu Xin , Zhang Ying Chao , Zhao Jing , Tang Wen Hui
Published: March 2013

In this paper, the numerical simulation analysis of jlu fsae racing car aerodynamic character based on star-ccm+ was introduced. Several simulated situations had been set and the results of the situations were compared. The effect of the wheel rotating situation of the racing car out flow and aerodynamic character was concluded. It was found that the air flows surrounding the wheels and the wings of the racing influenced each other. When the rotating wheel situation was set during the simulation, the effect that the air flows influenced could be simulated more clearly and the result could be more calculatedly. It was necessary to set the wheel rotate when to simulate the racing car aerodynamic character. From the simulated results, it also could be seen that it was also necessary to take care of the wheel rotate when to do the racing car wind tunnel test.
Effect of Bolt Hole Residual Stresses on Fatigue Performance of Truck Frame Rail Structures
Authors: Chinnaraj K. , Sathya Prasad M. , Lakshmana Rao C.
Published: March 2013

The large numbers of bolt holes cut into truck frame side members act as joineries and points of attachments for various sub systems of the truck. While these bolt holes are unavoidable due to their primary functional importance, the near hole residual stress resulting from the type of hole cutting operation plays a significant role in deciding the fatigue performance of frame rail structures. If the residual stress is tensile in nature, this along with the surface roughness at the hole surface can lead to early initiation of fatigue cracks around bolt hole surface. In order to assess the extent of plastic deformation and resulting residual stresses in near hole areas of frame bolt holes cut using drilling, punching, laser cutting and water jet cutting processes, experimental investigation was carried out through microstructure analysis and X-ray diffraction measurements. Apart from this, an assessment of shot-peened hole surface was taken up to understand the effect of shot-peening on fatigue behavior of frame rail section with bolt holes. Also the test specimens extracted from frame rail sections were tested for comparing the fatigue life of specimens having bolt holes cut using different hole cutting operations.
XFEM Based Analysis of the Crack Tip Stress Fields on a Three-Point Bending Specimen
Authors: Ren De Liang , Jiang Wei , Yang Jin Song
Published: March 2013

In this paper, the crack tip stress field on a three-point bending specimen with a fatigue precracked crack under concentrated loads was analyzed using ABAQUS. The stress intensity factor obtained from simulation was compared with theoretical analysis results and they agreed well. It is found that the result presented using the extended finite element method is capable of providing a reference for further study of the stress intensity factor.
Design Method of Dynamic Similarity of the Rotor-Bearing System
Authors: Luo Zhong , Li Jian Zhang , Yan Yu Long , Han Qing Kai
Published: March 2013

To predict the vibration characteristics of the rotor-bearing system by using the scale model and the associated scaling laws may significantly reduce the time and money required by the experiments. To this end, the dynamic similarity criteria are investigated inferring from the model behavior of rotor-bearing system to the vibration response of the prototype. The similar relationship was established by combining method of dimensional analysis and equation analysis based on similarity theory, and the effectiveness was verified through the finite element method. The result provide the theoretical rational for further study of the similarity design of the rotor-bearing system.
Nonlinear Dynamic Analysis for the New Whole-Spacecraft Passive Vibration Isolator
Authors: Tan Li Jun , Fang Bo , Zhang Jie Jie , Huang Wen Hu
Published: March 2013

The nonlinear vibration analysis related to viscoelastic damper is investigated for the new whole-spacecraft passive vibration isolator. The stepped sinusoidal sweep test is performed and the results reveal the nonlinearity of the system. The nonlinear motion equation is developed. The frequency response equation is derived by the method of harmonic balance. The experiment of various excitation levels are carried out contrasting with numerical simulations. The nonlinear influence factors to the vibration isolation system are argued and the identification results explain the effect parameters on the performance of the vibration isolator. The research work is of significant implications for the analysis and design of passive vibration isolator for a wide range of practical applications.
Blanking of Plastic Forming Simulation and Analysis Based on the DEFORM
Authors: Wang Wan Shun , Wang Yan , Wang Qiu Ping
Published: March 2013

Plastic forming of metal material is a complex process. To predict and explore the forming law of these issues must be based on computer-based numerical methods. In this article, the shearing step of a textile knotted knife is studied. With the application of the DEFORM finite element analysis software, we make a dynamic numerical simulation of shear fracture on the tool sheet. After analyzing material’s stress and strain distribution in the plastic deformation zone and plastic flow vector in sheet deformation zone, the variable distribution curve of strain state can be obtained. And by comparing with the simulation experiment, acceptable product can be received. Through the numerical simulation, we can have an intuitive understanding of the plastic deformation process of this sheet, in the mean time; deeply understand the mechanism of plastic deformation. The numerical analysis method and the selection of the parametric have a significance of guiding and reference to the quality improvement of knotted knife products.
Evaluation of Gamma Radiation on NR/PHBV Blends
Authors: Chutamas Maneewong , Jackapon Sunthornvarabhas , Sriroth Klana Rong
Published: March 2013

Natural rubber (NR) was compounded with polyhydroxybutyrate-co-hydroxyvalerate (PHBV) to improve mechanical properties for making a composite to be used in packaging applications. Gamma radiation technique was used to improve adhesion properties between these materials. The results showed that gamma radiation could induce cross-linking between NR and PHBV. The SEM micrograph illustrated the radiated NR/PHBV blends with gamma dose 5 kGy, 10 kGy and 15 kGy presenting a good adhesion at the blend interface. The investigation by FTIR, showing the appearance of small peaks at 2950 and 2997 cm-1 related to CH3 asymmetric stretching, also confirmed the cross-linking after the exposure of the NR/PHBV blend to gamma radiation. Also, the tensile results supported cross-linking between NR and PHBV. The elongation at break of NR/PHBV blend decreased when increasing dosage of gamma ray from 0 kGy to 15 kGy.
Ordered Melanin Film Fabricated by the Self-Assembly Technique
Authors: Lu Fei
Published: March 2013

In the present article, we obtained uniform and rather flat melanin films with the dendrites structure using self-assembly technique on Si substrate. The structure of film was confirmed by Fourier-transformed infrared spectrometry (FTIR), X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). Experimental results showed that the grown on the Si substrate, self-assembly film had oriented quality. Furthermore, according to the results, a model of the secondary structure in the melanin films was also proposed.
Design of Five Axis Cooperation Machine Based on Motion Control Board
Authors: Yang Shang Wei , Cao Shu Kun , Jia Jia
Published: March 2013

Abstract. PC-based open CNC system can fully take advantage of the computer's hardware and software resources, which can use a common high-level language: Visual C++ or Visual Basic to program. User can mix and use the standardized peripherals, application software flexibly, we use the self-developed five-axis CNC machine is experimental platform, which can develop open CNC system based on PC and motion control card. Using of five-axis machine motion control design based on "PC + motion control card" on Visual C++ platform.
Study on Predictive Control Technology Based on Disturbance of Electrically Heated Boiler
Authors: Li Ming Qiu , Jiang Shu Hua
Published: March 2013

Electrically heated boiler is a large inertia, time invariant and nonlinear process. Classical PID control algorithm cannot make the system meet up the needs of performance index. Dynamic matrix control (DMC) predictive control algorithm is adopted to control electrically heated boiler temperature. Simulation result shows that the temperature control system’s overshoot is zero, settling time is 200s, the steady-state error is 9.7574e-006. Compared with PID control, DMC predictive control decreases the overshoot and settling time and improves the system dynamic performance. Aim at disturbance, improved DMC control algorithm is put forward and enhance the system disturbance suppression ability.
Adaptive Controller Designed for High-Speed Train ATO System with Nonlinear and Uncertain Resistance
Authors: Luo Huan Yu , Xu Hong Ze
Published: March 2013

This paper investigates the tracking control problem of high-speed train system. The nonlinearities and uncertainties exist during the train operation are becoming even worse and cannot be ignored or simply linearized anymore as the speed increases. An adaptive control algorithm is developed to improve the tracking performance that does not rely on the accurate model parameters which are impossible to obtain precisely in practice and can deal with the nonlinearities efficiently. Based on the Lyapunov stability theory, the backstepping design method is used to deduce the control law step by step, and the certainty-equivalent principle is employed to dispose the uncertain parameters. Both the rigorous theoretical analysis and simulation results are all verified the effectiveness of this proposed control algorithm.
Intelligent Power Management of Electric Vehicle with Li-Ion Battery
Authors: Chen Sheng , Chen Chih Chen
Published: March 2013

The paper aims the power management of Li-ion battery on the electric vehicle to record motor-using behaviors for each electric vehicle in a cloud server. After retrieving information from each electric vehicle, developed algorithm will be able to conclude a proper charging scheme for each electric car according to their using history. Therefore, optimizing rapid charging scheme become possible, and the cloud information can also assist power grid to manage power flow under crucial circumstances. To do integrated management of batteries, the design starts from setting up LiFePO4 batteries’ charging/discharging characteristic curve under different load. Considering the mobility of battery information access, the work proposes a cloud server work as database and computing center. The more information collected by the cloud, the more precise of the battery-using model is. The database collects data including battery SOC, battery voltage, discharging current, temperature…etc. The battery life simulation also works in the cloud by the information about SOC, open-circuit voltage, discharging current and temperature. According to cloud data analysis, charging current 5C/10C/20C under rapid charging grid’s load monitoring is possible; the process of environmental development and hardware planning can train students to use hardware, firmware and software design platform for the skills development for future employment.
The Illumination of a Electrical Non-Fiberoptic Endoscope of Surgery
Authors: Tsung Tsing Tshih , Yang Liang Yu , Chen Chih Hao , Chang Ho
Published: March 2013

The electrical non-fiberoptic endoscope (ENFE) is primarily designed with no optical fiber. The illumination of a ENFE is important due to it affects the image quality of endoscope and the results of surgery. A investigations of the illumination of a ENFE are proposed in this paper. The illumination of ENFE is important due to it affects the image quality of endoscope and the results of surgery. The illuminations of orange-red inside were higher than the black inside. The illumination of rigid rod lens is 500 lux at 5 cm. The illuminations of ENFEs were decrease to 200 lux rapidly at 3 cm in case 4 although the illumination was over 1500 lux at first.
The Influence of Suture Density on Bioprosthetic Heart Valve
Authors: Yuan Quan , Ma Hai Bo , Huang Xu
Published: March 2013

This paper constructs the parametric model of the spherical heart valve via computer aided design, a series of accurate parameters of the bioprosthetic heart valve, such as the radius of the sutural ring, height of the supporting stent and inclination of the supporting stent are determined. The finite element method is used to determine the effect of the suture density on the dynamic properties of the bioprosthetic heart valve. The finite element analysis results show that the suture has a significant effect on the dynamic properties of the leaflets. The peak stress with different suture density is quite different and the stress distribution with higher suture density is more reasonable than that with lower suture density. In addition, the suture density has more effect at the top of the attachment edge than the other parts of the valve leaflets. This work is very helpful to manufacture the bioprosthetic heart valve with long term durability.
Design and Implementation of Seismic Data Digital Filter
Authors: Li Yong
Published: March 2013

In order to improve the quality and precision of seismic data, taking out or suppressing interference wave consisting in the earthquake wave will be one important link in the digital processing of seismic data .The fast Fournier transformation resolves big points N into certain dot’s DFT combinations .And then breaking a large number of multiply operations to add operations and a small quality of multiply operations, thus the computation speed of the Discrete Fourier Transformation (DFT) will be enhanced greatly. The widespread uses of FFT make it to be a powerful tool in digital signal processing. The present paper will introduce the quite comprehensive narration of the principle of filter, the characteristic of fast Fournier transformation algorithm principle as well as the realization.
Instantaneous Storage Availability Model: Considering Spare Parts Degradation before Replacement
Authors: Fei Si Miao , Huo Lin
Published: March 2013

Availability is essential index for strategic weapons in storage mission. Spare parts replacement is an effective way to improve system storage availability. Normally, the performance degradation of spare parts before replacement is hardly considered in traditional instantaneous availability model. We established a instantaneous availability model using backward equation of semi-Markov Process (SMP) when considering the degradation time of spare parts before replacement. Our analysis indicated that availability had been great effect on when the performance degradation of spare parts is considered. An example is shown to express that this model could help policymakers to choose more suitable supporting plan.
The Simulation Analysis of a Micro Electromagnetic Harvester Based on Vibration Energy
Authors: Nie Wei Rong , Ma Wei Dong
Published: March 2013

In order to provide effective power for small aerocraft, this paper offers a design of an electromagnetic vibration energy harvester based on MEMS technology, which works in special launching environment. According to "mass-spring-damper" system theory, this paper firstly built a model of the pick-up system, and discussed the pick-up system's response to sinusoidal input and impact load. Then, an energy conversion system was modeled, in order to analyze the system's power output. ANSYS simulation has been done on the pick-up system of different structures & parameters, and the relationship between different structures & parameters and the energy harvester voltage output has been studied. Based on the theoretical analysis and software simulation, the designed energy harvester working high frequency vibration environment can produce voltage over 200mV, which is enough for micro-sensor, low-power circuit in aerocraft.
Conversion CL Data to NC Data Using an Instinctive Method for Non-Orthogonal Table-Type 5 Axis Machines
Authors: Lin Tzu Kuan , Lin Alan C.
Published: March 2013

Since different types of 5-axis milling machines have their own unique rotation mechanisms, the solutions developed to generate numerical control (NC) data are traditionally targeted toward specific mechanisms and are obtained via specific methods, normally resulting in complex algorithms. In order to resolve this problem, this paper proposes an instinctive method to convert cutter location (CL) data to NC data for non-orthogonal table-type 5 axis machines. The rotational angles of the two rotational axes can be easily derived from the tool-orientation vector, and the coordinates of the three linear axes in the NC data can be easily derived from the rotational angles and coordinates of tool position. Even more, this method enables the development of a generic algorithm for the rotation mechanism of any 5-axis CNC milling machine.
The Research and Development of VB and Solidworks-Based 3D Fixture Component Library
Authors: Chen Tian , Yan Xuan Xuan , Yu Zhong Hai
Published: March 2013

The rise of the Flexible Manufacturing System (FMS) and the Computer Integrated Manufacturing System (CIMS) put forward a more urgent need for the practical fixture design software. 3D Visual Basic-based standard parts library is proposed in this paper. By calling the Application Program Interface (API) functions of Solidworks as the secondary development, the 3D standard parts library is established. And then the application program is made as plug-in to hanging onto the menu of Solidworks operating environment. When the assembly design starts, users can select the standard parts they need by clicking Solidworks menu. And then the application program can automatically query all the data required for drawing pictures. Finally the 3D entities of standard parts are generated so that they can be adopted for the assembly environment.
Analysis on Energy Efficiency of a Rolling-Jumping Robot
Authors: Ho Thanh Tam , Lee Sang Yoon
Published: March 2013

Selecting a suitable locomotion way for a mobile robot is critical for succeeding its mission. This paper introduces a cylinder-like robot that can locomote by means of either rolling or jumping on the ground. First, design of the robot is described to explain the mechanism for enabling rolling and jumping by using only one DC motor. Second, the design is analyzed in terms of energy efficiency and compared to a couple of hybrid mobile robots.
Design of Small Laser Tracking System Based on Four-Quadrant Detector
Authors: Zhang Wei , Zhang He , Liu Bin , Xu Jing
Published: March 2013

Returned laser detection is bottleneck in remote active laser detection. A practical small laser tracking system with simple structure based on four-quadrant detector (QD) is presented in this paper. For the volume restriction in weapon systems, design a small laser receiving optical system. An orientation calculation circuit based on the Sum and Difference circuit with Divisional normalization algorithm is designed to decrease the burden on processor. A simple MCU circuit based on high-speed chip C8051F020 is generated, accomplishing AD-conversion and further calculation. Through programming of the electric signals from the orientation calculation circuit with C8051F020, a control signal used by the missile guidance is formed. Laser signal receiving experiment is conducted by the circuit board as presented in this paper. It is possible to achieve the ideal requirements, and provide a good foundation for collaborative processing of other sensor signals to jointly get guided control commands.
Monitoring System with Wireless Sensor Network: A Survey
Authors: Jeong Hwa Young , Hong Bong Hwa
Published: March 2013

In the last years, wireless sensor networks (WSNs) have gained increasing application and attention from both the community and actual users. WSN has many benefits such as efficiency, convenience and easy to use/control. By this benefit, the system engineer who works for manufacturing area attempt to apply the sensor network. In this paper, we study the monitoring system with wireless sensor network and its framework for manufacturing system.
Application of Conductive Rubber Filled by Carbon Black for 3-D Force Measurement
Authors: Li Shan Hong , Ge Yun Jian , Huang Ying , Wang Yu Bing , Cao Hui Bin , Ding Jun Xiang
Published: March 2013

Pressure-sensitive conductive rubber has been investigated as sensitive material due to its good pressure-resistance characteristics. This paper presents a flexible tactile sensor with new structure. The sensing mechanism is based on body piezoresistive effect of conductive rubber filled by carbon black. To improve the sensor’s flexibility, there is a smart angle design in the arrangement of the wires in lower electrodes layer. Besides, the force model of the sensor has been described. The simulation results indicate the validity of 3-D force measurement of the sensor.
Monitoring of Human Driver Behavior by Vehicle Trajectory Reconstruction for Transportation Safety Management
Authors: Heo Geun Sub , Lee Sang Ryong , Park Cheol Woo , Kwak Moon Kyu , Lee Choon Young
Published: March 2013

In this paper, we proposed a method of monitoring human driver by reconstructing trajectories which transportation vehicle followed. For safety and management of logistic transportation, it is important to monitor the states of driving behavior through the whole course of path. Since many accidents occur due to the reckless driving of the driver every year, continuous monitoring of the status of commercial vehicles is needed for safety through the entire path from start point to the destination. To monitor the reckless driving, we tried to monitor the trajectory of the vehicle by using vehicle's lateral acceleration signal. Using the correlation between steering angle and lateral acceleration, we could find the relationship between steering angle and acceleration, and finally it is possible to estimate the global direction of vehicle maneuvering. We conducted experiments to find the history of vehicle position on the curved road using Kalman Filter, and classified steering wheel condition (over-steering, and under-steering). The method is applied to central safety management system for safety control of vehicles transporting toxic gases.
Fault Detection of Robot Control Systems Based on Available Wireless Network Measurements
Authors: Zhang Jie , Lv Ming , Guo Peng Fei , He Liang , Bo Yu Ming
Published: March 2013

Considering some robot control systems which employ wireless networks to transmit sensor signals between the controller and the nonlinear controlled object, the fault detection is carried out. Firstly, based on T-S fuzzy model, the object is linearized. The fuzzy observer is designed and the error equation of the observer is given by using the fuzzy dominant subsystem rule. Secondly, the error equation is equal to the discrete switched system related to the hop count of the wireless transmission, and the stability of the error system is proved. Finally, a simulation example is given to demonstrate the effectiveness of the proposed method in this paper.
The Research And Design of Wireless Coal Mine Safety Network Monitoring System On The Basis of ZigBee
Authors: Qu Jia
Published: March 2013

On the demands of the quick and convenient information access and coal mine computerization and networking of the modern society, we design a new intellectual wireless gateway control system on the basis of S3C2410 and Linux, achieving the wireless connection of Intellectual coal mine monitoring system and the terminal facilities. Furthermore, we focus on the research of the system’s organization and its software design and control of its terminal equipments on the basis of ZigBee. This gateway’s design program is based on the combination of self-designed ZigBee stack architectures and the embedded system on the purpose of connecting network and exchanging information. This system has a lot of advantages, such as lower complexity, lower power dissipation, lower cost, higher safety etc. And it is certain that its market will be huge in the future.
A New Adaptive Square-Root Unscented Kalman Filter for Nonlinear Systems
Authors: Zhou Yong , Zhang Yu Feng , Zhang Ju Zhong
Published: March 2013

This paper describes a new adaptive filtering approach for nonlinear systems with additive noise. Based on Square-Root Unscented Kalman Filter (SRUKF), the traditional Maybeck’s estimator is modified and extended to the nonlinear systems, the estimation of square root of the process noise covariance matrix Q or measurement noise covariance matrix R is obtained straightforwardly. Then the positive semi-definiteness of Q or R is guaranteed, some shortcomings of traditional Maybeck’s algorithm are overcome, so the stability and accuracy of the filter is improved greatly.
The Identification of Quality Attributes for SaaS in Cloud Computing
Authors: Jeong Hwa Young , Hong Bong Hwa
Published: March 2013

Cloud computing is a new paradigm for delivery of applications, platforms, or computing resources (processing power/bandwidth/storage) to customers in a “pay-as-you-go-model”. It can be categorized Software as a Service (SaaS), Platform as a Service (PaaS) and Infrastructure as a Service (PaaS). Especially, SaaS is a potential segment and have many advantages such as investment reduction, performance improvement, time saving, easier collaboration, global accessibility, and so on. However, in spite of these importance and advantages, there are few researches about identification for the quality and making quality attributes for SaaS in cloud computing. In this paper, we propose identification of quality attributes for QoS of SaaS in cloud computing. In order to construct their quality’s attributes fitting on SaaS characteristics, we extract their attributes from ISO/IEC 9126 and design the QoS model for SaaS.
Fault Diagnosis Method of Rolling Bearing Based on Ensemble Local Mean Decomposition and Neural Network
Authors: Liao Xing Zhi , Wan Zhou , Li Yi Yang , Cheng Li
Published: March 2013

For a problem of mode mixing occurs in implementation process of local mean decomposition (LMD) method, an analytical method based on ensemble local mean decomposition (ELMD) and neural network is proposed to apply to fault diagnosis of rolling bearing, the vibrational signal of rolling bearing is decomposed into a series of product functions(PF) by ELMD method. The PF components which contain main fault information are selected to perform a further analysis. The kurtosis coefficient and energy characteristic parameters extracted from these PF components can be used as the input parameters of the neural network to identify the working status and fault types of rolling bearing. Through the analysis of rolling bearing with fault-free, inner-race fault and outer-race fault, the results indicate that the method based on ELMD and neural network has a higher failure recognition rate than the method based on wavelet packet analysis and neural network, and the working status and fault types of rolling bearing can be identified accurately and effectively.
CMMI Based System Software Process for Industrial Manufacturing System
Authors: Jeong Hwa Young , Kim Yoon Ho , Kim Young Gi
Published: March 2013

Capability Maturity Model Integrated (CMMI) can be help to evaluate the development processes of manufacturing system software according to qualitative and quantitative development progress when the system developer or engineer design and develop their system. As well known, the development progress for manufacturing system is very complex. In this paper, we identify and make the development model for manufacturing system software. In order to make the efficient the model, we use CMMI process.
A Knowledge Based Approach for Product Variant Design
Authors: Wu Yang Dong , Zhang Tai Hua
Published: March 2013

In order to solve the problem that design resources can not be effectively reused, variant design is used in engineering field. Knowledge is the key factor implementing strategy of variant design. This paper puts forward the knowledge classification, process model, information resource base and reasoning model for variant design. Knowledge of variant design is classified into product domain knowledge, variant design methodology and basis theory knowledge, variant design process combines top-down mode to bottom-top mode, its corresponding information resource base includes case base, knowledge base and database. CBR is the core for design reasoning. The frame of knowledge-based variant design system includes resource base, resource management, variant design and evaluation subsystem. Using the system, designer could reuse design resource and reduce developing cost.
Short-Term Wind Speed Forecasting by Using Chaotic Theory and SVM
Authors: Zhu Cai Hong , Li Ling Ling , Li Jun Hao , Gao Jian Sen
Published: March 2013

The wind speed forecast is the basis of the wind power forecast. The wind speed has the characteristics of random non-smooth so obviously that its precise forecast is extremely difficult. Therefore, a forecasting method based on the theory of chaotic phase-space reconstruction and SVM was put forward in this paper and a forecasting model of Chaotic Support Vector Machine was built. In order to improve the precision and generalization ability, the key parameters in the phase space reconstruction and the key parameters of SVM were carried out joint optimization by using particle swarm algorithm in the paper. Then the optimal parameters were brought into the forecasting model to forecast short-term wind speed. The above method was applied to wind speed forecast of a wind farm in Inner Mongolia, China. In the experiments of computer simulation, the absolute percentage error of forecasting results was only 12.51%, which showed this method was effective for short-term wind speed forecast.
Size Effect on Pull-In Behaviors of Electrostatically Actuated Cantilever Micro-Beams
Authors: Kong Sheng Li
Published: March 2013

For the deformation problem of an electrostatically actuated cantilever micro-beam, size effect on pull-in behaviors of the micro-beams have been studied based on modified couple stress theory. The approximate analytical solutions to the pull-in voltage and pull-in displacement of the micro-beam are derived by using the Rayleigh-Ritz method. The results show that the normalized pull-in voltage of the cantilever micro-beam is size-dependent and the normalized pull-in displacement of the micro-beam is size independence.
Structural Design of Primary Mirror Subassembly for Space Telescope
Authors: Xu Hong
Published: March 2013

In order to design a large aperture primary mirror with the diameter of 1150 mm, the parameters impacting on gravity deformation of the mirror were analyzed and discussed in detail, including material selection, diameter-thickness ratio, the number of the support points, location selection and lightweight structure, etc. A novel space mirror structure system was put forward, and its back was opened and supported by six points on back. The dynamic and static and thermal characteristics were analyzed based on the finite element method. Analysis results showed the surface figure accuracy reached to RMS 14.5nm under the action of gravity load along the optical axis direction and the first-order natural frequency was 214Hz which met to the designed indexes requirements.
PZT Acoustic Energy Harvester Arrays with Dual Top Electrodes
Authors: Uchida Yusuke , Iizumi Satoshi , Tomioka Syungo , Tsujimoto Kyohei , Tomii Kazuki , Matsuda Tomohiro , Hagiwara Saori , Miyake Syuntaro , Nishioka Yasushiro
Published: March 2013

This paper presents the power generation performances of an array of three microelectromechanical system (MEMS) acoustic energy harvesters equiped with lead–zirconate–titanate (PZT) capacitors. The PZT acoustic energy harvesters had a diaphragm with a　diameter of 2 mm consisting of Al (0.1 μm) / PZT (1 μm) / Pt (0.1 μm) / Ti (0.1 μm) / SiO2 (1.5 μm), and the diaphragm vibrations were excited by sound pressure. The arrayed peripheral energy harvester generated a maximum power of 2.26 × 10-10 W at a sound pressure level (SPL) of 100 dB at 5 kHz. The output power of three arraying devices was about 3 times larger than that of the single devices.
Independent Velocity Measurement of Small Underwater High-Speed Moving Body Based on External Turbine
Authors: Chen Yong , Zhang He , Jiang Qi , Shen De Zhang
Published: March 2013

Combining with rotational speed measurement methods and underwater environment particularity, an independent velocity measurement scheme applicable to small underwater high-speed moving body was proposed in this paper. The structural design of the measurement device was designed and signal process method was improved, and the relationship between turbine rotational speed and speed of the body was obtained by FLUNET dynamics simulation and water tunnel experiments. Finally, the simulation and experimental results were analyzed. The results show that this method is effective and feasible within a certain range of accuracy.
The Field Inspection and Research of Related Problems about a Kind of Non-API Thread Connections
Authors: Wu Jian , Wei Zun Yi , Han Xin Li
Published: March 2013

Compared with API (American Petroleum Institute) OCTG (Oil Country Tubular Goods) thread, Non-API thread OCTG has excellent sealing performance and high joint strength for greater depth, higher pressure and temperature, other more rigorous working conditions as well. This paper describes the special structures of a kind of Non-API connection in specific, which is widely used in domestic oil field and gas storage, detailed examination of this connection and recommended practice to measure its thread. So as to provide some useful reference and help for field inspection, it also focuses on the connection’s unusual measure items and points some problems in the process of thread inspection.
Research on the Random Vibration Cumulative Fatigue Damage Life Based on the Finite Element Analysis
Authors: Wang Cheng Cheng , Li Chuan Ri , Ma Tian
Published: March 2013

Aiming at most of the aviation products are facing the problem of fatigue fracture in vibration environment, we analysis the structure of a bracket with ANSYS-Workbench, predict the life of the bracket by different ways, and compared with the testing result, then use the Fatigue damage spectrum (FDS) and Extreme Response Spectrum (ERS) to analysis expected results. The research not only ensure the accuracy of simulation analysis and life predict, but also make a dynamic supervision of product life process, promote the application of finite element simulation analysis in engineering practice.