bluuebunny/crossref_metadata_2025 huggingface dataset:
Thermal and Electrical Properties of Polypropylene/Carbon Nanotube Composites
Authors: Gao Jing Long , Liu Yan Hui
Published: August 2011

In this work, the carbon nanotubes(CNTs) were reinforced with polypropylene(PP)matrix resins to improve the electrical and thermal properties of PP/ CNTs composites in different contents of 0,1, 3,and 5 wt.%. The surface, volume resistivity and crystallization type of the composites were investigated. As a result, the maximum degradation rate temperature of the composite is improved 30 °C, the surface resistivity and volume resistivity of composite are 5 ×106, 7 ×105,respectively, for the optimum composition of composite (CNTs 3 wt.%). The integrated XRD pattern of the composites shows the typical α-form PP crystals.
Study on Making Ceramic Composite Steel Plate by SHS Process
Authors: Jiao An Yuan , Wang Feng Hui , Yang Si Qing
Published: August 2011

Large cross-section composite rectangular steel tubes with ceramics inner liner, which can be used directly, and also cut into the ceramics clad plate, were made by a new effective way. The material type, shape and size parameters of cores were determined and thickness and hardness of the ceramic coating were measured. The bond stress between steel substrate and alumina ceramics were analyzed and the bond modes also were checked. The dimension parameters of hemming plate used in the experiment were determined and the bond strength between the coating and tube substrate in normal and tangential direction was examined. The results show that the ceramics coating surface is glossy, which thickness is among 1.5-3.5 mm, the hardness of alumina ceramics inner liner is above HV1100. Metallurgical bonding between steel substrate and ceramics coating could not come into being and the mechanical bonding with lower bonding force is the mainly joint mode.
Effect of Milling Time on the Properties of Nanocrystalline CuCr50 Alloys
Authors: Shi Kun Yu , Shen Tao , Xue Li Hong , Chen Chun Hao , Yan You Wei
Published: August 2011

Nanocrystalline CuCr50 alloys were fabricated by means of mechanical alloying and spark plasma sintering. The influence of milling time on the as-milled powders and properties of sintered compacts were investigated. The results show that crystallite size of powders decreases gradually with increase of milling time, while the micro-strain increases firstly then decreases correspondingly. The crystallite size is 22 nm at milling 100h.The micro-hardness of the compacts improves greatly with the increase of milling time, reaching 363HV at 150h which is about 3 times as high as that of the industrial standard (120HV), while the electrical conductivity improves gradually decline. The bulk nanocrystalline CuCr50 alloys sintered at 900°C for 5min exhibit high relative density of 96% and uniform microstructure: nanoparticles Cr with size of about 120nm are uniformly dispersed in the matrix.
Research on Intelligent Soft Starting Method for Three-Phase Asynchronous Motor Based on MATLAB
Authors: Zhu Yan Feng
Published: August 2011

Considering the very large direct starting current of three-phase asynchronous motor, this paper presents a design method of asynchronous motor soft starter based on a intelligent control- fuzzy adaptive PID control. The simulation model of the soft starting control system is established with the power system blockset in MATLAB/SIMULINK software. The simulation results show that the fuzzy adaptive PID control method can effectively limit the motor starting current and it is better than the control effect of traditional PID control. Therefore, the fuzzy adaptive PID control scheme presented in this paper is correct and feasible.
Evaluation of the Friction and Wear Properties of PA6 Composites Filled with Nano-SiO2
Authors: Wang Wen Xia , Li Jian
Published: August 2011

PA6 composites filled with nano-SiO2were synthesized. The aim of the research article is to study the mechanical and friction and wear behaviour of nano-SiO2reinforced PA6 composites. The worn surface of the composite was examined by scanning electron microscopy. The results showed that the addition of nano-SiO2can effectively improve the mechancial and tribological properties of the PA6 composites.
Design Method for a Pair of Oval Bevel Gears
Authors: Shi Kan , Xia Ji Qiang , Wang Chun Jie
Published: August 2011

Oval bevel gear is a kind of noncircular bevel gear which can achieve variable transmission between intersecting axes. We design the pitch curve by spherics cosine theorem in spatial polar coordinate because the pitch curve of oval bevel gear is not the planar curve. The bevel gear cutter is introduced, and we get the Three-dimensional model of oval bevel gear through extended development of UG. This method can make the calculation accurately, easily and get a wide variation of transmission ratio.
Simulation and Redesign of Industrial High-Speed Sewing Machine Based on Performance-Driven
Authors: Che Jun Hua , Zeng Qian , Sun Zhen Qiang , Wang Ping Zhang
Published: August 2011

High-speed sewing performance which determines the performance and quality is the core technology of the industrial high-speed sewing machine. Such studies for sewing performance which are the core technology and own the intellectual property in the enterprise have been researched in the developed country. And fewer articles can be seen in the public materials. In this paper, the quality and performance of the ZJ9700MF-RS have been greatly improved by the way of simulation and redesign for high-speed sewing machine.
Finite Element Analysis of 35 Tons Steel Coil Overturning Machine
Authors: Wang Feng Hui , Jiao An Yuan
Published: August 2011

35 tons hydraulic overturning machine is the operating equipment that is mainly to make steel coil turn 90 ° and keep steel coil change from vertical position to level position or on the reverse. Because the dead weight value of overturning machine is extreme and the coil's weight which needs to turn is very heavy, the strength of equipment that is a very important design parameter plays a decisive role in the device security. By using the finite element analysis function of COSMOS Works to analyze the strength of overturning machine, which simplifies the design process, improves the design reliability and has value for the design of steel coil overturning machine.
Preliminary Research on Length Conversion Factor of Assemble Boom
Authors: Lin Gui Yu , Li Wei Liang , Guo Fu Li
Published: August 2011

As regards the solution of ensemble elastic stability of assemble and lattice boom with complicated boundary conditions are rarely discussed, it is always plaguing designers. In this article, through analyzing the characteristics of vice-boom and vice-boom strut bar be caused complex deformation under load, based on the deformation relationship among vice-boom, vice-boom strut bar and main-boom ends, establishing elastic stability theory mathematical-mechanical model, using the theory of calculating the Euler critical force, proposed the method and numerical value to determine length conversion factor of assemble boom. This article has an inaugural significance of theory.
Superplasticity of AZ91 Alloy ECAPed with Different Routes
Authors: Li Feng , Guo Sheng , Che Xin , Chen Li Jia
Published: August 2011

Equal channel angular pressing (ECAP) was conducted using the die with a 90° angled channel under routes A, BC and C for hot extruded AZ91 magnesium alloy. Tensile tests were carried out at 300 °C and initial strain rates ranging from 2×10−4 to 5×10−3 s−1. The experimental results show that different routes have obviously effect on elongation to failure. It is found that the highest elongation to failure is 410 % at a strain rate of 2×10−4 s−1 for the ECAPed AZ91 alloy with route BC. At the same strain rate, route BC can bring the greater superplasticitic deformation compared with routes A and C. Moreover, the strain rate sensitivity coefficient m values of about 0.3 to 0.5 are attained for the ECAPed AZ91 alloys with different routes. For the ECAPed AZ91 alloys, the main superplastic deformation mechanism is the grain boundary sliding, while the main accommodation mechanism is the dislocation creep mechanism controlled by the grain boundary diffusion.
Numerical Simulation of Performance of Steam Ejector Influenced by the Distance between Nozzle Outlet and Mixing Chamber Inlet
Authors: Dai Xiao Chun , Liao Guo Jin
Published: August 2011

The performance of a steam ejector was simulated using FLUENT. The performance of steam ejector was studied by changing the distance between primary nozzle outlet and mixing chamber inlet (DPM) while operating pressures and other geometric parameters were not varied. The entrainment ratios of the steam ejector with different values of DPM were calculated. The optimum range of DPM was given, which is changed from 1.8 to 2 times of the throat diameter of hybrid diffuser pipe. The errors of the CFD results to the experimental results of the entrainment ratio are not more than 15%.
Vibration Simulation of Disc Vibration Dryer Based on ADAMS
Authors: Wang Xue Ping , Zhang Zhen Wei
Published: August 2011

The vibration simulation to disc vibration dryer based the virtual prototype of ADAMS. Through the analysis of the simulation results, find out the vibration displacement and angular velocity curve of vibration dryer by different installation angle of vibration motor, which can conduct dryer machine structure design and worksite debugging, and provides reference for regulation research of materials movement in dryer machine.
Study of Epoxy Resin Emulsion by Emulsion Graft Polymerization
Authors: Mu Rui , Dai Li Li , Fan Shu Li , Deng Ai Min
Published: August 2011

In the paper, the emulsion graft polymerization is used to prepare stable epoxy resin emulsion by vinyl acetate and polyvinyl alcohol (PVA) as emulsification stabilizer. It is studied for the influence on the properties of emulsion by temperature and dosages of functional monomer, acrylamide and acrylic acid, and initiator. The results show that the optimal conditions: reactive temperature is 75°C, acrylic acid is 2%~4%(mass concentration), acrylamide is 2%~4%(mass concentration) and initiator is 0.7%~0.8%(mass concentration).
Study on Forming Feasibility of AISI-5140 Triple Valve by Multi-Way Loading: From Aspect of Geometric Parameters
Authors: Sun Zhi Chao , Wang Jiang Hui , Yang He
Published: August 2011

Multi-way loading technology provides an efficient method to form integral triple valve parts. However, some forming defects such as cracking and folding are prone to occur, which will weaken the forming limit and quality of formed triple valves. Based on numerical simulation, taking forming load, damage, stress, strain and folding as objectives the forming limit and feasibility were studied by changing geometric dimension of billet and triple valve to be formed. The results showed that (1) for a given billet, as the inner diameter of triple valve increasing, the forming load, maximum damage value, stress and strain increased, i.e. the larger the inner diameter of triple valve the more difficult to form; (2) For triple valves with a given inner-outer diameter ration the maximum damage, maximum stress and strain values increased as triple valve outer diameter decreasing while forming load changed a little. The possibility of folding would augment with the increase of inner-outer diameter ratio d/D, when d/D≥0.8, folding occurred under the forming condition in this paper.
Optical Path Design and Gain Anticipation in Tm3+ Doped Glass Channel Waveguide for U-Band Amplification
Authors: Tian Miao , Zhou Zheng Yang , Guo Wan , Lin Hai , Zhao Xin
Published: August 2011

To achieve effective U-band integrated amplification in a cm2 glass substrate, bent waveguide structure (U-bend) based on Tm3+ doped germanate glass substrate has been designed. Using simulated-bend method, the optimal radius for the curved structure is offered to be 2.30 cm with a bending loss coefficient of 0.054 dB/cm. For the U-bend waveguide, the evident signal gain is anticipated in the wavelength range of U-band, and the ideal internal gain is derived to be 5.77 dB at 1675 nm wavelength, which is two times higher than 2.52 dB in the straight one. Simulation results indicate that reasonable optical path design can enhance the optical gain in Tm3+ doped germanate glass channel waveguides considerably, which provides a feasible designing idea in realizing practical applications for U-band amplification devices.
FPN Analysis and Processing of the Science Grade CCD Alta U9000
Authors: Yuan Yu Lei , Luo Ya Bo , Zhang Chao , Zhu Yong Xing
Published: August 2011

The FPN is an important part in CCD noise. The positions of the FPN in CCD are fixed, and the magnitude follows some rules. Through measuring the positions and magnitude of the FPN beforehand, we could eliminate the FPN in the image processing afterward. The causes and forms of the FPN are analyzed. The FPN of the science grad CCD Alta U9000 is introduced. The relationship between the FPN of U9000 and the exposure time is determined with the shutter closed. And the FPN of images taken in another experiment is eliminated. The experiment results well.
Work Piece Length Measure System Based on Image
Authors: Sun Ke Mei , Yu Chun He
Published: August 2011

Corporation work piece length measure system based on digital image processing technology. CCD vidicon is used as the image capture equipment. Image signal are converted into 8 bits digital code stream by CMOS image sensor chip OV9650. DSP chip of TI is used as the core of image processing in the scheme. Peripheral SDRAM are expanded through peripheral bus to save the large amounts of temporary data in data processing to reduce the time for image processing. Median filtering is adopted in image enhance of the object image. The length of rectangle work piece can be measured in the distance by untouched way by improved edge recognition algorithm in real time. The measurement result is displayed by LCD. Meanwhile the measure system communicates with PC through communication interface. It has been proved that the system can guarantee real-time and high accurate. It’s a typical instance of DSP and digital image processing technology used in industry.
A Novel Method for Online Measuring the Short-Circuit Impedance of Distribution Transformers
Authors: Li Xia , Chen Min You , Cheng Shan
Published: August 2011

The paper proposes a novel method for online measuring the short-circuit impendence of the distribution transformers (DT). The relation expression of the short-circuit impedance with respect to the voltage and current of the primary and secondary side has been developed through the analysis of the equivalent circuit model of a transformer, in which the voltage and current of the DT is collected by 12-channel-data-acquisition unit. And the online SCI is computed by fitting the obtained voltage and current data. The simulation results and comparison illustrated that the proposed method is simpler and more efficient with high accuracy. Besides, the proposed method integrates the linear fitting technique. The simulation results based on Matlab/smulink verified the feasibility and effectiveness of the novel method for online measuring the short-circuit impendence of the DT.
Measurement of Laser Ablation Micro Impulse Using the Torsion Pendulum Interferometry
Authors: Ye Ji Fei , Wang Guang Yu , Wang Dian Kai
Published: August 2011

A method is described for measuring the micro impulse induced by the laser ablation. This method is based upon the torsion pendulum interferometry technique. The method measures the micro impulse through the detection of the swinging angle of torsion pendulum. The swinging angle is obtained by the laser differential interferometry. For the 10-4~10-7 magnitude micro-impulse, It could be the important measurement method in the research of micro laser plasma thruster (mLPT). The results of some preliminary experiments are presented with detailed reference to experiment methodology and accuracy. The measurement technique is well suited to cases seeking the measurement of mN×s magnitude micro-impulse.
Conflict-Driven Learning in Test Pattern Generation
Authors: Liu Xin
Published: August 2011

SAT-based automatic test pattern generation (ATPG) is built on a SAT-solver, which can be scalable is that it is able to take into account the information of high-level structure of formulas. Paper analyzes specific structure of circuit instances where correlations among signals have been established. This analysis is a heuristic learning method by earlier detecting assignment conflicts. Reconvergent fanout is a fundamental cause of the difficulty in testing generation, because they introduce dependencies in the values that can be assigned to nodes. Paper exploits reconvergent fanout analysis of circuit to gather information about local signal correlation through BDD learning, and then used the learned information in the conjunctive normal form (CNF) clauses to restrict and focus the overall search space of test pattern generation. The experimental results demonstrate the effectiveness of these learning techniques.
Synthesis, Characterization and Anticorrosion Performance of Modified TiO2 as Inhibitor
Authors: Liu Lin Lin , Li Yuan , Hao Bao Wei , Wang Shi Zhao
Published: August 2011

Little attention has been paid to the nano-TiO2as corrosion inhibitor before. In this paper, Myristic acid-modified nano-TiO2(MA-TiO2) were synthesized by Myristic acid and tetrabutyl titanate via the sol-gel method, and it was characterized by IR and TEM. MA-TiO2was dispersed in oil, and used as a corrosion inhibitor. From the Tafel plots and EIS spectra, we can know that the values of the current densities decreased by the addition of MA-TiO2. Because of the MA-TiO2formed a deposition layer in the surface of 45#carbon steel panels, the current density of the the base oil with MA-TiO2is much smaller than the base oil. The inhibition efficiency was over 90% with added 5 wt % TiO2.
Optimized Simulation for GaN Growth in Vertical HVPE Reactor
Authors: Zhao Chuan Zhen , Yu Li Yuan , Tang Chun Xiao , Li Ming , Zhang Jian Xin
Published: August 2011

The paper reports the setting up of a model of fluid dynamic for GaN HVPE system and the simulation. The deposition of GaN with the variation of the gas flow inlet velocities is investigated. The influence of diffusion coefficient on the deposition of GaN is also discussed. It is found that the influence of the gas flow inlet velocities on the deposition is large and the influence of diffusion coefficient on the deposition of GaN is small in vertical HVPE.
Design of Temperature Monitoring System Based on MSP430
Authors: Hu Fei , Yin Wen Qing , Chen Cai Rong
Published: August 2011

The Greenhouse Temperature Is one of the Key Factors for Controlling the Growth of Crops. Traditional Methods of Temperature Monitoring Can Not Meet the Modern Greenhouse Requirements of High Accuracy, Fast Acquisition and Response. a Greenhouse Temperature Monitoring System Based on MSP430 Was Designed. this System Uses Digital Temperature Sensor DS18B20 to Measure Temperature, MSP430 to Process Data and Transmit Data to the Host Computer through RS485 Bus, Realizing the Real-Time Detection and Long-Distance Transmission of Greenhouse Temperature. this System Has the Features of Simple Structure, Low Power Consumption, Stability and Strong Portability Etc.
One Reduction Method of Telecommunications Nework Events
Authors: Dong Cheng Gen , Wu Jin Pei , Zhang Qi Shan
Published: August 2011

In this paper, the mass events of telecommunication network are researched, the none fault events reduction method and repeat events reduction method are proposed after researching the events of telecommunications network, on the basis of researching the characteristics of the events of telecommunications network, the improved methods were proposed. Further, in the aspect of event reduction performance, proposed the fingerprint algorithm, the events reduction process of inefficient much text comparison convert efficient integer value comparison, effectively improve the performance of the event reduction, meets real-time event handling performance requirements.
Method of Parallel System Performance Evaluation Based on Multi-Level Fuzzy Synthetic Evaluation Model
Authors: Hou Xue Mei , Yu Lei , Li Zhi Bo , Du Zhu Ping , Lian Bai You
Published: August 2011

Nowadays, the parallel system performance evaluation is the hot spot topic. It’s helpful to improve the parallel system performance to establish a scientific evaluation model. In this paper, using of analytic hierarchy process and the fuzzy mathematics theory, the multi-level fuzzy synthetic evaluation model is established, the performance index system is defined and the parallel system performance evaluation process is realized.
Shear Test on Mixed Slide-Zone Soils of Landslide under Different Water Content
Authors: Nian Ting Kai , Feng Zhong Kai , Yu Peng Cheng , Wu Hui Jun
Published: August 2011

This study is based on a typical residual soil landslide adjacent to Daxishan Reservior in Dalian city of China. By drilling the original samples in the field and remodeling the copy samples in the laboratory, a series of geotechnical experiments are carried out by the improved direct shear apparatus to obtain the changing law between the shear strength and water content of the mixed slide-zone soils. Emphasis is given on the shear stress-strain behavior and the corresponding constitutive model under different water content for the soils. Especially, the typical fitting equation is achieved to reflect the state of shear stress-normal stress-water content, some strain softening and hardening behavior on the mixed slide-zone soils of landslide is also discussed in detail. The results indicate that the shear strength is significantly related to water content of mixed slide-zone soils of landslide. The bigger water content of slide-zone soil is, the smaller the shear strength of soils is. When water content of mixed slide-zone soils approaches to certain value (i.e., 15%), the curve of shear stress and displacement shows a remarkable softening behavior, and the shear strength has marked a peak value.
Dynamic Prediction and Measurement of Overpressure for Venting of Gas Explosion
Authors: Wen Xiao Ping , Yu Ming Gao , Liu Zhi Chao , Sun Wen Ce , Zheng Li Gang
Published: August 2011

In order to predict the effects of gas volume and mass inertia of explosion doors on overpressure for venting of gas explosion, a numerical method are used to simulate some situations of venting devices such as panels or explosion doors. The numerical data are in good agreement with the experiments of panels given an overpressure peak. A set of experiments were carried out in a 10 m3 silo and methane is used as fuel. The results of measurement in experiments indicated that the inertial mass of explosion door has a possibility of causing considerable damage and has effected on the rate of opening vented door and the pressure rise in such the experimental silo.
Salt and Pepper Noise Removal Based on GA-BP Algorithm
Authors: Song Yin Mao , Li Xiao Juan
Published: August 2011

Noise detection-based median filters have been widely adopted to reduce salt and pepper noise in images. However, since noise pixel is not detected accurately, it is likely to blur the fringe of image under the high noise density. In this paper, we propose an algorithm of salt and pepper noise filter which is based on GA-BP algorithm noise detector to remove the salt and pepper noise in images. The algorithm firstly detect the location of noise pixels by using optimized GA-BP network,then,it introduce edge-preserving function and PRP algorithm to solve the objective function of extreme value further to realize the image denoising. Compared with the traditional algorithms, experimental results show that the proposed algorithm has an evident improvement, and have good characters of generalization, robust and self-adaptive.
A Profiled Strip Measurement Equipment Based on Machine Vision
Authors: Cai Chen Yun , Li Xia
Published: August 2011

This paper presents a set of novel profiled strip parameter measurement equipment which is in serial production. In order to measure shape parameter, this paper designs the structure of equipment and illustrates method of image processing which carries on object location and shape parameter calculating work-piece for using machine vision. This method is proved to be useful and efficient in practice. This paper is innovative in four facts. First, it works using image processing which never appeared in such type of application. Similarly, the equipment can work no matter what directions that profiled strip lies. Third, the equipment can work automotive without man-made measurement error. Finally, it can be used to measure multi-kind of work-piece in the line. This method can be widely used in other similar application.
Path Planning of the Robot for Aero-Engine Turbine Blades Maintenance
Authors: Pu Xin , Li Liang Yu , Wang Tian Qi , Li Jia Hui
Published: August 2011

In connection with the model of the turbine blade to be maintained, the path planning technology for the welding robot is researched. By using Solidworks, the model of the turbine blade is layered and dispersed. According to the analysis of the main function of welding robot’s offline programming system, path planning and torch pose planning are designed for blades maintenance. According to the characteristics of simulation data, the result shows this program is valuable for turbine blades maintenance based on welding robot.
The Research of Oil Pipeline Leak Detection and Location Based on PVDF Piezoelectric Sensors
Authors: Wang Qing , Wan Zhou , Jing Zhong Guo , Xiong Xin
Published: August 2011

This paper mainly deals with the problem of oil pipeline leak and difficult to detect its location, combining the trait of our country’s oil pipeline, researching the leak detection and location based on the PVDF piezoelectric sensors. This paper firstly describes the domestic status of pipeline leak detection, and then gives a brief introduction for the PVDF piezoelectric film, finally discusses the pipeline leak detection and location system based on PVDF piezoelectric sensors. Experiments show that the use of PVDF piezoelectric sensors on pipeline leak detection, the leak can be correctly identified, and improving the detection sensitivity and leak resolution, effectively reducing the false alarm rate.
Test and Analyze on Thermal Balance of Evaporation Process in Alumina Refinery
Authors: Wu Yan Peng , Peng Xiao Qi , Zhang Jian Zhi
Published: August 2011

Aluminum evaporation system for a thermal balance test is made in the evaporation system under normal production conditions of the thermal parameters, to understand the energy flow and logistics structure, thermal efficiency and other technical and economic indicators. By analyzing the operating parameters on the influence of steam consumption, the authors find out the current production problems, reduce thermal loss and improve thermal efficiency.
Implement a Low Noise Portable ECG Circuit
Authors: Wang Ching Sung , Liu Chien Wei , Wang Teng Hui
Published: August 2011

The most important operation of electrocardiogram (ECG) signal measurement device is to amplify signal and maintain correct original signal. The operation of all circuits cause electromagnetic interference (EMI), but EMI can be reduced by using special component or some PCB layout approaches. This paper provides an example of portable ECG device to demonstrate a method that can effectively reduce EMI and be applied in finished product. This research has built a lead-1 ECG to reach a low noise operation. This result can be easily applied to portable ECG measurement.
An Improved Comprehensive Index Method for the Evaluation of Rock Burst Risk in Mining
Authors: Zhang Zhi Zhen , Gao Feng , Shang Xiao Ji
Published: August 2011

There are uncertainties such as randomicity, vagueness, gray, unsureness in the factors of comprehensive evaluation of rock burst risks due to the complexity of the geological conditions and deficiency of experimental data. In this paper, we apply the mathematic theory of blind information to the comprehensive index method for the assessment of rock burst risks, use blind data to express the uncertainty of the risk index, and put forward blind data form of the comprehensive index. Meanwhile, by use of blind data algorithms, we compute the reliability value in different numerical value intervals of comprehensive index, which consequently provide more comprehensive evidence to judge the rock burst risk levels and overcome the problem of absolutization in traditional methods. The case analysis indicates that the apply for blind data in rock burst evaluation can consider influential factors better and obtain more reliable results. In conclusion, it is a new way of evaluating the rock burst more comprehensively and scientifically.
Design of 183.31GHz Interferometer with Two Elements
Authors: Sun Feng Lin , Zhang Sheng Wei , Zhang Yu , He Jie Ying
Published: August 2011

Microwave emissions at various frequencies are known to contain information on atmospheric chemistry. Information about water vapor is of great interest at 183.31GHz. Interferometric synthetic aperture radiometer avoids the disadvantages of manufacturing and carrying large antennas at the expense of complexity. This paper has discussed the design of the 183.31GHz interferometer system with two elements based on imaging theory and retrieving algorithm of two-dimensional synthetic aperture radiometer. And then several important experimental results are presented.
Energy-Efficient of Non-Invasive Motor for On-Line Monitoring System Based on Reasoning Model
Authors: Zhang Qing Xin , Liu Chong , Miao Qi , Li Hai Bin , Li Jin
Published: August 2011

This paper mainly introduces the development process of energy-efficient of non-invasive motor for on-line monitoring system based on reasoning model. In addition, the function , composition and commissioning of shis system is introduced. In this system, in order to collect and analyze status recording of the motor running, operating parameters of motor speed, torque and power factor, efficiency are estimated on-line by using motor stator current signal feature analysis technology. In the paper, air-gap torque method is used to non-invasive electromotor for efficiency computation. The designing process of software for On-line monitoring system is shown as: Firstly, monitor motor’s operating parameters on-line, then, motor energy management is supported by the analysis of monitoring recording. At the same time, construct communication network for motor monitoring by using wireless communication technology about efficiency curve of industry motor. This system has the advantages of monitoring precision, easy installation, low costs, especially suitable for monitoring and energy management of efficiency for small and medium-sized motor, and it has been used widely in industrial production.
Research on XML Based Data Integration in PCS of Process Industry
Authors: Li Qi , Qu Xuan
Published: August 2011

According to the heterogeneous of devices of process industry and the characteristics of embedded systems, this paper proposes a data integration solution based on XML, which builds a data integration and exchanging demonstration platform in the environment of STM32, ARM9 and Windows CE.net and implements the parsing of XML documents within embedded systems. This paper gives a powerful method to realize the integration and sharing of data information among process industry field devices.
Cross-Coupling Synchronization Control of High Precision Permanent Magnet Linear Motors
Authors: Sun Jing Na , Xiao Yong , Ge Xiao Yu , Wang Xiao Yan
Published: August 2011

In this paper, a cross-coupling synchronization controller is proposed to achieve a synchronous motion for high-precision positioning systems with uncertainties and disturbances, where an additional P controller is equipped to generate cross-coupling control action. Tuning procedure of the control parameters is also provided, so that improved tracking and synchronization performance can be obtained. The key to the success of the new design is to ensure that each motor tracks its desired trajectory while synchronizing motion with others. Experiments on a positioning system with two permanent-magnet linear motors demonstrate the effectiveness of the proposed control method.
The Brake Assist System of Automobile Overhaul Competence Analysis
Authors: Chao Chih Yang , Yang Shih Chun , Guo Yi Wen , Yieng Chai Song , Liao Ting Jian
Published: August 2011

The purpose of this research was to explore the Brake Assist System of automobile overhaul competence indicators. Literature review, interviews, professional meeting, Delphi method were yielded to analyze the competence items in the automobile overhaul. Thus, to reveal the curriculum planning, instruction strategy, and teaching material for the automobile overhaul professional technology manpower cultivating, this research was conducted deep expert interview, and three times Delphi questionnaire investigation. The opinions of experts were unanimity for the competence indicators. Finally, results of this study revealed three category competence indicators for the Brake Assist System of automobile overhaul including (1) the 11 professional ethics competence indicators such as value social ethics, working ethics, time, quality, attitude, working zeal and professional dedication, really get the work done, train oneself constantly, high loyalty, plasticity, and law-abiding, and self-managerial competence. (2) the 9 competence indicators of Brake relevant knowledge of the system and analytical skills such as understanding the systematic function of ABS, knowing relevant part names of ABS, function, erection site, and understanding the principle of moving of automobile ABS, and understanding the systematic function of EBD, knowing relevant part names of EBD, function, erection site, and understanding the principle of moving of automobile EBD, and understanding the systematic function of BAS, knowing relevant part names of BAS, function, erection site, and understanding the principle of moving of automobile BAS. And (3) the 6 competence indicators of brake assist system overhaul such as skilful with ABS examine and repair; skilful with ABS relevant part procedure of renewal , and skilful with EBD examine and repair; skilful with EBD relevant part procedure of renewal ,and skilful with BAS examine and repair; skilful with BAS relevant part procedure of renewal. These results are not only offered to help curriculum planning and material development for the basis of the automobile overhaul, but help vocational industrial school and automobile industry cultivating the talent manpower.
Study Performance of Pure Electric Buses Based on the Fuzzy Control Strategy
Authors: Zhou Feng Jun , Lin Cheng , Nan Jin Rui , Wang Gang , Cao Wan Ke
Published: August 2011

Pure electric bus control strategies and methods have an important effect on performance of the bus. The pure electric buses vehicle driving system was modeled and optimized by the fuzzy control strategy. Through simulation and commissioning tests, both the dynamic performance and economy of the pure electrical bus that using fuzzy control strategy have an excellent performance.
An Integrated Measurement Platform for Piezoelectric Transformer Based on Virtual Instruments
Authors: Zhang Xing Cheng , Li Mao Kui , Liu Jian Qiang , Fu Yun Xu
Published: August 2011

This paper presented an integrated measurement platform for piezoelectric transformer based on virtual instruments. Programmable signal generator was adopted to stimulate the piezoelectric transformer. Then an USB oscilloscope was used to acquire the response signal. We could get the results by analyzing the experimental data. The measurement accuracy and efficiency were greatly improved in the virtual instruments platform compared with the conventional measurement method. It was of great significance to the scientific research. Section I pointed out the problems in conventional piezoelectric transformer parameters measurement method and gave a solution of using virtual instruments technology to solve these problems. Section II described the hardware design of the measurement system. Section III described the software design of the virtual instruments measurement system. Conventional measurement methods and virtual instruments measurement method were compared in section IV.
A Study on Pore Diameter Distribution of Saliniferous Dredger Fill Consolidated by Vacuum Preloading
Authors: Yuan Xiao Qing , Wang Qing , Xia Yu Bin , Song Jing , Lin Sen
Published: August 2011

The pore structure of soil plays a decisive role in its engineering properties. In order to investigate the consolidation effect and pore distribution characteristic of saliniferous dredger fill after vacuum preloading, the indoor simulation experiments of vacuum preloading were carried out in two boxes, after vacuum preloading, the dredger fill was tested for its physicochemical and mechanical properties. Simultaneously, the mercury intrusion porosimetry was performed to obtain distribution of pore characteristic parameters, and analyzed its pore diameter distribution of dredger fill after vacuum preloading and the consolidation effect in the perspective of micro and macro. The research showed that the total pore volume and porosity of the No.1 box is lower than the No.2 box, and its bearing capacity and consolidation effect are much higher. When the dredger fill locates at the same distance from drainage plate, the deeper the dredger fill is buried, the smaller the porosity is, the better the bearing capacity and consolidation effect are. The pore of dredger fill in No.1 box is based mainly on meso pore, while the one in No.2 box is based mainly on meso pore and macro pore.
Theoretical and Numerical Analysis of Waste Heat Utilization Device for Coal Gangue Brick Tunnel Kiln
Authors: Meng Fan Mao , Wan Jian Feng , Li Hai Xia
Published: August 2011

This paper studies the waste heat utilization device for the coal gangue brick tunnel kiln. The heat transfer mode of the waste heat utilization device is different form the past. It recovers the physical sensible heat of the high-temperature brick. This paper builds a theoretical model to analyze the situations of the cooling section of the coal gangue brick tunnel kiln, and analyzes the temperature field numerically. The results show that the distance form the waste heat utilization device to the sintering section of the coal gangue brick tunnel kiln must be more than 2m.
Auto-Read Photoelectric Autocollimator Based on DSP and Area Array Imaging Sensors
Authors: Hu Qi , Yang Yuan Yuan , Gao Peng Fei , Wu Wei Jun
Published: August 2011

The paper explains an auto-read photoelectric autocollimator based on DSP and area array imaging sensors. The working principles, hardware and software of the design is interpreted. This equipment is able to conduct precise two-dimensional measurement. The embedded core Blackfin DSP BF549 is used in the device to acquire consecutive video, help store them and process the image datas. TFT screen is adopted to display the processed video results at real time. Auto-read tracking algorithm is a combined method of image interframe difference and background difference. Thus the moving target is detected in the static background. Then according to the position of the moving measuring mark calculate the angular displacement.
A Method for Detecting Deformation of Pipeline Based on Distributed Fiber Optic Strain Sensor
Authors: Yi Li Qi , Qian Cai Fu , Ding Ke Qin , Qiao Song
Published: August 2011

A method for detecting pipeline’s deformation is presented in this paper, based on distributed fiber optic strain sensor. We simplify the pipeline and analysis it as a beam. According to beam’s geometrical relational expression, pipeline’s deflection could be calculated by using discrete strain with numerical method.
The Meteorological Information Applies Optimization of Research in the SCIPUFF Nuclear Proliferation Analogous System
Authors: Chen Wen Ting , Lu Fang Chuan , Tsai J.C.
Published: August 2011

The meteorological information for atmospheric environment's most basic information, contains the temperature, important items and so on, barometric pressure, wind direction, wind speed, stability, mix level altitude, the content is diverse, and the material quantity is huge. Because the meteorological condition to includes the nuclear radiation and the biochemistry pollution proliferation has the quite important influence, under the limited transmission space and the time condition, how to establish an optimization the meteorological information, take grasps the related meteorological essential factor as this research discussion key point. This research unifies the SCIPUFF nuclear pollution proliferation analogous system, the analysis different meteorological factor to of analogue result the pattern influence, grasps the meteorological essential factor. In the SCIPUFF nuclear pollution proliferation analogous system meteorology mold train application, compared to demonstrated analysis of by way of the meteorological factor to the result that the atmospheric environment meteorological factor besides the wind speed and the temperature, the atmospheric stability also for the essential factor which essential has, enables the pollution proliferation analogous system to have the best simulation effect. Simultaneously when has also confirmed the pollution proliferation, is by the low wind speed, the high stability atmospheric condition may create the best diffusion effect. In addition, the mix level altitude to pollutes the proliferation the influence function not, if the atmospheric stability is obvious, the primary cause is mixes the level altitude the performance also to conceal the atmospheric stability essential factor result.
Research on Measurement Technology of Impulse Current Based on Hall Sensor
Authors: Sun Ying , Li Qiu Feng , Lu Chao , Chen Zheng Hua
Published: August 2011

A method based on Hall sensor is presented in order to measure pulsed current. Measuring device, which is based on CS3500 series linear Hall-effect ICs, is designed and calibrated. 4.3/102μs pulses are applied to the measuring device. Test results show that this device can well reproduce the shape of the measured current, and the maximum peak amplitude of the pulsed current that the device can measured is 83.3kA.
Electrochemical Property of Terbium Doped Tantalum Oxide Film Electrode
Authors: Zhao Yan Hong , Hou Li Chun , Liu Wen Fei , Liang Sheng , Wang Xiao Jing
Published: August 2011

Terbium doped tantalum oxide (Tb-Ta2O5) particles were synthesized with a low hydrothermal method. The phase structure of Tb-Ta2O5 obtained was performed by X-ray diffraction (XRD). The result revealed that the terbium doped Ta2O5 belongs to orthorhombic crystal. The electrochemical property of methylene blue (MB) at Tb-Ta2O5 film electrode in 0.5 mol dm-3 KCl aqueous solution was investigated with cyclic voltgrammetry (CV). The CV result indicated that the electrochemical kinetics of MB was diffusion controlling at Tb-Ta2O5 film electrode. Tb dopping imporved the electrochemical property of Ta2O5 film electrode. Tb-Ta2O5 is used as a kind of electrode material which has some new potential applications.
Experimental Study of Gasoline Flame Propagation Characteristic
Authors: Wang Kai Quan , Le Lin , Qi Jing Ji , Zhou Qi , Huang Yong
Published: August 2011

By using of high-speed camera on the experimental platform of gasoline flame propagation, gasoline (93#) flame shape and propagation characteristic have been studied under different propagation angles. Experimental results showed that, an orange main flame zone and a blue flashover flame zone were observed in gasoline flame propagation processes; as the angle between propagation direction and horizontal plane increased gradually, the fluctuation range of the main flame narrowed gradually in perpendicular to gasoline surface direction, the speed of the main flame forward propagation tended to be uniform and the average value of it increased gradually in parallel to gasoline surface direction.
The Research of Vibrator Wireless Monitoring System Based on Compressive Sensing
Authors: Shen Wei , Wang Jun Zheng , Li Jing
Published: August 2011

The vibrator wireless monitoring system is designed based on Zigbee and the theory of compressive sensing. This system consists of the sensor wireless acquisition device, the vibrator wireless automation recorder and the vibrator remote management computer. Different modules of the system communicate via the Zigbee wireless network. The data to transmit is compressed by applying compressive sensing technology. As result, the quantity of the data transmition decreases sharply with the reliability and real–time operation being ensured. The system is already in use and the effectiveness is proved.
Experimental Study on Effect of Pulley Diameter and Lubricant Grease on Multi-Layer Winding Wire Rope’s Fatigue Endurance
Authors: Hu Zhi Hui , Hu Ji Quan , Hu Yong
Published: August 2011

Comparison test method is used to study the effect of pulley diameter and lubricant grease on multi-layer winding wire rope’s fatigue endurance. The investigation indicates that the fatigue failure behavior is closely related to spatial location where the wire rope is in drum; the occurrence and development of broken wires follows regularly. The fatigue endurance of multi-layer winding wire rope is little influenced by lubricant grease, which is greatly affected by the diameter ratio of pulley to rope in multi-layer winding. The results have important reference value for the reliability design of multi-layer winding wire rope.
Analyses of Electromagnetism Guided Waves in Metal Pipe by Using of Multi-Scale Entropy
Authors: Chen Shu Wang , Mi Dong , Xu Zhang Sui
Published: August 2011

A short time high power pulse is stimulated by the LC circuit. Through a send winding, the electromagnetic guided wave signals transmit in the metal pipes. A receive winding is mounted around the pipe to collect the receive signals. The receive signals are different if there are several defects in the metal pipe or not. To analyze the instantaneous pulse group, a method of multi-scale entropy is adopted. The receive signals are transformed to a data sequence. In terms of the entropy values of the sequence at different scales, the complexity of the data sequence is gained. The defect information is contained in the entropy value varied curve.
Evaluation of Taste Quality in Green Tea Infusion Using Electronic Tongue Combined with LS-SVM
Authors: Ai Shi Rong , Wu Rui Mei , Yan Lin Yuan , Wu Yan Hong
Published: August 2011

This study discussed the feasibility of taste quality evaluation for green tea infusion using electronic tongue. Chemistry evaluation was regarded as the reference measurement, and used to measure total taste scores of green tea infusion. LS-SVM was used to build the correlativity between the sensor signals of green tea infusion and total taste scores by the reference measurement, and compared the influence of different principal components on the performance of LS-SVM model. Experimental results showed that the optimal model was obtained when 4 PCs were included with Rc=0.951 and RMSECV=3.242 in calibration set, Rp=0.904 and RMSEP=4.134 in the prediction set. This study showed that the electronic tongue had a great potential in the evaluation of taste quality for green tea and LS-SVM was an efficient method to build the evaluation model based on electronic tongue.