bluuebunny/crossref_metadata_2025 huggingface dataset:
Modeling and Analysis of Small Scale High-Voltage Charging Circuit under Discrete Time Domain
Authors: Wang Yong Qiang , Wu Yi Di , Wang Yun Yan , Liu Chang Lin
Published: October 2011

Small scale high-voltage flyback charging circuit is the key unit of the initiating experiment device of slapper detonator, which converts the initiating energy from low voltage to high voltage and stores the energy in a high voltage capacitor. It is a highly nonlinear system, of which the research topic is the process of the establishment of the output voltage—an area which belongs to large signal transients. This has made the research of this topic difficult and progress slowly. In this paper, in order to study the characteristics as well as the rules of the charging process for the purpose of design optimization, the discrete time domain model of the flyback charging circuit is built and simulated. Experimental results are given and show that the model presented in this paper is instrumental for the optimization of the high voltage charging circuit.
Study of Remote Control of Non-OS Embedded Instrument Based on LXI Bus Technology
Authors: Chen Shu Yue , Liu Yong Ming , Wang Yi
Published: October 2011

A scheme is proposed to realize remote control of embedded instrument without operation system under the mode of B/S structure in view of its self-limitation. Advanced LXI bus technology is usually employed to replace the traditional bus technologies, by which the remote network control can be realized. Due to its, small resource characteristics of embedded instrument, LwIP protocol stack is transplanted into the instrument for realization of the simple TCP/IP protocol function, Web server function is applied to the instrument. The method takes existing low-end instrument as a foundation, combines CGI with the embedded instrument for interactive operation and finally realizes the remote control of embedded instrument through LAN interface.
Design of Intelligent Aim System of Tear Bomb Emitter Based on Binocular Stereo Vision
Authors: Zhang Jie
Published: October 2011

The intelligent Aim system of the Tear Bomb Emitter based on binocular stereo vision has been designed for the armored car equipped in our Armed Police Force. In this paper, according to the intrinsical feature of the background, the binocular stereo vision is chose to detect the forward distance between the bomb emitter and the crowd which the emitter needs to aim at. A new way which is based on integrating temporal information with spatial information has been presented. Then the forward distance was obtained according to the camera calibration, image processing, and error model. The error and measuring experiment shows that the percentage error is less than 2% and this method is feasible and effective.
Temperature Control System of Annealing Furnace Based on Smart Meters and PC
Authors: Wang Yan , Lu Bin
Published: October 2011

With the requirements of larger production process and continuous reheating annealing furnace production, quality and the optimization of the energy consumption constantly increasing demand, industrial annealing furnace burning process precise temperature control is particularly important [1]. The working state of the heating annealing furnace will directly affect the process operation and sequence. Combining with the actual requirements of the project an axle, we use the smart and PC temperature control to achieve economic efficient and stable production purpose.
The Intelligent Monitor System for Battery
Authors: Luo Yong Gang
Published: October 2011

The system is a new on-line monitor system. Which is consisted of a master station , which is a computer with intelligent CAN-bus interface unit, and a slave station, which is a monitor module for battery parameter measure. The paper introduced the hardware at first, which composed of the CPU circuit, the canbus interface, and then, focus on the software design , including the automatic monitoring of CAN bus transmission,the A/D sampling.
Study on the Modeling of Main Mine Ventilator Based on Artificial Intelligence
Authors: Du Xin Hui , Niu Shu , Wang Xing Min , Wang Pu Hui
Published: October 2011

The parameters of main ventilator in mine such as air flow, wind speed, gas concentration and other conditions are closely related, for its complexity, it’s difficult to establish the nonlinear mathematic model, and it’s hard describe the model properties by traditional identification method. Neural network and Fuzzy system are used in mine main ventilator model identification. A Neural network based on RBF is used in neural network, and a T-S fuzzy model based on triangle membership function is used in Fuzzy identification. The simulation results show that the two methods can satisfy the needs of identification precision, convergence rate, stability and tracking ability simultaneous.
Application of Multi-Objective Artificial Immune Optimal Algorithm in the Elevator Group Control System
Authors: Liu Yue Min , Zhu Yan
Published: October 2011

With the development of the electronic technology, people have proposed higher requirements for the service quality on elevator, and the optimal elevator dispatching has developed a typical multi-objective optimal process. This paper analyzes both the advantages and the disadvantages of artificial immune algorithm and gradient descent algorithm, optimizes artificial immune algorithm, then proposes a novel optimal hybrid algorithm; at the same time, uses this hybrid algorithm in the elevator group control system combined with Pareto solution set. Making a comparison between the hybrid algorithm and the standard artificial immune algorithm, it’s clear that this hybrid algorithm has certain feasibility and superiority, and to some extent, has improved the overall performance and service quality of the elevator group control system. This paper has provided a new method and a new thought on determination of the multi-objective weighted values in the elevator group control system.
Automatic Anti-Icing Robot of High-Voltage Transmission Wire
Authors: Zhao Yu Qian , Wang Pan , Gao Ding
Published: October 2011

The problem of persistent icing on high-voltage line is very serious and cause severe losses. In order to solve the high-voltage line freezing, an automatic anti-icing robot (AAR) of high-voltage transmission line is designed in a new way. In this article, the technologies of take power online (TPO), mechatronics and network group control (NGC) are used in the designs. The automatic anti-icing robot (AAR) can work continuously in all weather and be controlled in large scale. In addition, a de-icing tool is designed specially. In conclusion, the automatic anti-icing robot of high-voltage transmission line can effectively solve the freezing of the high voltage line and has a large value of reference and promotion.
Analysis of Nonlinearity in High Speed Differential Phase Shift Keying Optical Transmission System
Authors: Cai Ju , Bai Qiu Jian
Published: October 2011

The nonlinear effect in high speed differential phase shift keying (DPSK) optical transmission system is analyzed in this paper. The fine dispersion management can mitigates the system performance degrade induced by nonlinearity. The relationship between Q-factor and dispersion precompensation distance are discussed detailed, and an optimized dispersion precompensation distance where has a maximum Q value is reached through simulating the 40Gbit/s DPSK dispersion pre-compensation transmission system.
Numerical Study on Turbulence Modification in Particle-Laden Pipe Flows
Authors: Yan Fu Sheng , Zhang Wei Jun , Liang Ru Quan
Published: October 2011

This investigation deals with the study on the processes involved in the phenomenon about turbulence modification in dilute gas-particle turbulent flows. The proposed model, along with other selected turbulence modification models from the literature, is used to simulate a particle-laden vertical pipe flow. The simulation results show that the new model provides improved predictions of the experimental data.
Comparative Analysis on OQPSK and QDPSK of Continuous Pressure Wave System in Drilling Fluid Channel
Authors: Li Zhong Wei , Wang Rui He
Published: October 2011

Based on the urgent needs for high transmission speed and high reliability of wireless MWD, the OQPSK modulation of the drilling fluid continuous wave signal is proposed in this article. The Principle of delay orthogonal modulation and coherent demodulation of OQPSK are studied, and the changes in the phase vector of the inputted bit sequence are analyzed; according to the principle of continuous wave generation, the phase adjustment mechanism of rotary value are analyzed and the relationship between the signal waveform, as well as the rotational speed when adjusting the phase, is studied; the information transmission rate, band efficiency and bit error rate of the OQPSK and QDPSK continuous wave communication systems are comparatively analyzed and simulated. The results show that OQPSK eliminates the phase transition of π, which belongs to constant envelope modulation, is suitable for the transmission under low SNR drilling fluid channel, meanwhile simplifies the phase adjustment and reduces generator design. QDPSK can simplify the computational complexity of phase adjustment, and reduces the design difficulty of the continuous-wave generator’s control circuit. The rotary valve forms of "slow down - speed up" and " speed up - slow down " are suitable for π / 2 and 3π / 2 phase jump respectively; the motor control modes which combine closed loop position and closed loop velocity can achieve phase stable signal and reduce the dynamic torque of the motor; in the same carrier frequency and SNR, the information rate and bandwidth efficiency of both OQPSK’s and QDPSK’s are twice as those of the two-phase shift keying system’s, and they can improve the wireless transmission performance of MWD system.
Application of C4D Technique to Void Fraction Measurement of Gas-Liquid Two-Phase Flow: Stratified Flow
Authors: Ri Kum Chol , Wang Lei , Fu San Fu , Huang Zhi Yao , Wang Bao Liang , Li Hai Qing
Published: October 2011

The feasibility of applying C4D technique to void fraction measurement of gas-liquid two-phase flow is investigated in this paper. As a preliminary research, void fraction measurement under stratified flow is studied. Conductance of two-phase fluid are obtained by a new C4D sensor, and then used to measure the void fraction in 15mm i.d. pipe. An empirical correlation between void fraction and normalized conductance is developed. Thus, the void fraction can be determined by this empirical correlation with the obtained conductance. The experiment results show that applying C4D technique to the void fraction measurement of gas-liquid two-phase flow is feasible. The measurement results of void fraction are satisfactory, and the maximum absolute error of void fraction is less than 0.03.
Design and Implementation of a IPTV Widget System for ST-9150
Authors: Yang Chen Hui , Yan Ke Tong , Luo Wei
Published: October 2011

The widget applications have been very widly used on PC platform and hand-held devices. Widget applications will be widely used on the IPTV platform. This paper describes a widget system of IPTV on the ST-9150 hardware platform which is designed by STM icroelectronics (ST) company. This widget system consists of three parts: widget engine, widget manager and widget applications. The widget engine is come from the Google widget engine which is ported to ST-9150; widget manager is designed using the Qt framework technology; through the Google Desktop IDE, three widget applications are implemented, which is suitable for the IPTV platform. As the conclusion, it provides a IPTV widget system, which can be a good fit for the IPTV platform, and can well organize the widget applications.
Customized Design Support System for Manufacturing Enterprise and its Implementation
Authors: Zhong Pei Si , Song Jian Dong , Wei Jun Ying , Liu Mei
Published: October 2011

The importance of customer service in customized design support is introduced. The basic requirements of customized design support are analyzed, including the difficulties and information flow. A model of information flow among customized design, manufacturing and service is built. The layers and support techniques for customized design support are discussed. The customized design support model is set up and the customized design support procedure is presented. A network-based architecture of customized design support system is proposed and the functions are discussed.
Seam Deviation Detection and Stitching Simulation of 3D Composite
Authors: Dai Shi Jie , Wang Chuang , Zheng Hong Wei , Chen Zheng Hua , Lin Lin , Wang Jing
Published: October 2011

In this paper, a 3D composite seam image has been firstly preprocessed and then the centerline and key-points have been extracted. After that, a method has been proposed which is based on the optical deviation detection-lateral and vertical deviation detection of the seam. Seam simulation is immediately carried out with MATLAB. It turns out that the deviation error is less than 0.004 mm, and that stitching simulation route are basically the same as the actual seam. It also demonstrates that this method is practical and effective.
Customer Clustering for Product Green Design
Authors: Zhang Lei , Liu Zhi Feng , Bao Hong
Published: October 2011

The characteristic of product’s life-cycle customer environment requirements is analyzed. A customer clustering methode for green design is proposed. Conjoint analysis method is used to obtain individual customer’s environment requirements and system-clustering method is used to cluster customers in accordance with their environment requirements preference. Green product customer clustering is realized. Thus, successive development of green product can be supported. Green design oriented customer clustering of soybean milk maker is illustrated to exemplify the method.
Research on Multi-Information Fusion Control System of Textile Workshop Environment
Authors: Li Jing Zhao , Cheng Gao Xin
Published: October 2011

Back propagation network can provide dynamic maps and deal with historical data by increasing self-loop. By using the improved circle back propagation neural network, Multi-information fusion algorithm are realized and used to environment control system of textile workshop. Hardware circuit of the system is designed with the embedded microprocessor and appropriate detection devices. The training and algorithmic design of self-loop back propagation network can be achieved by embedded systems programming based on the portable operating system. Application shows that the multi-information fusion control system of textile workshop Environment, which based on local self-loop back-propagation network, has high control precision.
Application of Castor Oil-Based Cutting Fluids in Precision Turning
Authors: Pei Hong Jie , Shen Y.J. , Shen Chun Gen , Wang Gui Cheng
Published: October 2011

Green machining is a process that implements sustainable development strategy. In order to reduce cost and decrease environmental pollution in manufacturing process, a sort of biodegradable castor oil-based emulsion is developed, whose physical and chemical properties can correspond with the national standards. The cooling and lubricating properties of the emulsion are better while machining steel materials through comparative experiments with certain imported commodity synthetic cutting fluid. The emulsion can successfully substitute for commodity fluid because of its high performance-price ratio.
Study on Rapid Modeling of Spline Based on Pro/E Secondary Development
Authors: Zeng Yong , Zhang Rui Liang , Wang Yun Feng
Published: October 2011

Spline is an important component to ensure transmission and connection in the mechanical design. But species and parameters of the spline are different according to the different national standards. In order to meet the user requirements, this paper developed spline rapid design function on VC2005 platforms with UDF method based on Pro/E platform that applies Pro/E secondary development kit Pro/TOOLKIT, uses Access database，and realizes selection design function of the spline type and parameter for China Standard, American standard, Germany standard etc.. Through practical application, the requirement of spline rapid design function in Pro/E is satisfied.
Research for Computer Integrated Manufacture in Complex Shape Piston of Diesel Engine
Authors: Liu Yong Feng , Yang Jian Wei , Tian Hong Sen , Zhu Ai Hua
Published: October 2011

In order to improve complex shape piston productivity computer integrated manufacturing system (CIMS) technology is presented. Design elements need to be taken into account in CIMS technology, which are geometry, material choice, and rationalization of components (reducing assemblies) and cost. In design freedom phrase, this new design freedom will place much more responsibility on the designer to think about the exact requirements of a part – with the unlimited geometry capability designers will therefore need to be much more imaginative to make full use of the new manufacturing processes. New design paradigm is presented and mechanical designers will be able to manufacture any complexity of product they require. Effect of graded materials on product design is considered and 2D and 3D of piston are carried out. CAD issues and assembly constraints of complex shape piston of diesel engine are discussed. It gives new method to design and produce complex shape piston of diesel engine.
The Model and Optimization for the Discrete Operations Workshop Layout Based on Multi-Agent Theory
Authors: Wang Ya Liang , Chen Yong
Published: October 2011

The original equipment manufacturing mode of the multi-species, multi-process and multi-unit is the main mode in Zhejiang manufacturing industry, the workshop layout affect directly the production efficiency and cost. The paper analyzed the impact factors of discrete operations workshop layout, established the Multi-Agent mathematical model of discrete operations workshop layout by using Multi-Agent theory, put forward the objective function of the workshop layout, and carried out empirical study by typical enterprises. By analyzing raw data of ZJ manufacturing enterprise, brought forward two layout programs based on mathematical model of Multi-Agent, evaluated the benefits and chose the better one of the two programs according to the objective function. The results after the implementation showed that the logistics measuring pitch of the program after selection is small, and the workshop area utilization is higher, and the equipment cost is reasonable. The model and optimization technology of discrete operations workshop layout based on Multi-Agent theory has important practical significance and good feasibility.
Process Optimization of Cake Oriented Screw-Pressing of Jatropha curcas
Authors: Wu Wei Xiong , Ma Rong Chao , Liao Nian He
Published: October 2011

Jatropha curcas from Panzhihua area was used to explore the optimal process of screw-pressing. And the result shows the optimal process parameters are as follows: the water content of kernel is 3%; the ratio of kernel to shell is 8:2; the temperature of the mixture of kernel and shell entering the pressing chamber is 100°C; the temperature of the pressing chamber is 170°C; and the corresponding oil yield is 87.8958%.
Numerical Simulation of Gas Flow in a 48 t/h Biomass Fired Grate Boiler with Inner Dust Removal Device
Authors: Zhao Ying , Wang Ning , Chen Qiu Luan , Wang Tie Cheng , Liu Wen Yi , Lu Qiang , Dong Chang Qing
Published: October 2011

This paper presents the numerical simulation of a 48t/h biomass fired grate boiler with an inner boiler dust removal device located in the third pass. The results show that the inner dust removal device can correct the decline of the gas flow in the passes effectively on the basis of dust separation. The best air flow ratio of RPA: RSA: RIAis = 4: 4: 2 correspondingly. Therefore, the new inner dust removal device should be applied in current commercial biomass boilers to improve their operation performance.
Central Air-Conditioning Duct Cleaning System Based on SRV1
Authors: Li Lian , Yan Zhi Yang
Published: October 2011

This paper puts forwards the idea of using SRV1 as the platform and making a whole and integrated central air-conditioning duct cleaning system by combining lighting and cleaning devices with dust cleaning devices which all together could fulfill the task of cleaning the central air-conditioning ducts. With good mobility and extended function and also small in size,SRV1, which can also realize wireless remote control and trunking communication, is available for monitoring and cleaning all parts of the ducts simultaneously and can be applied in the complicated environment of the central air-conditioning ducts.
Comparison and Analysis on Two Improved Detecting Methods for Harmonics without PLL in Single-Phase Circuit
Authors: Ding Ju Xia , Zhang Xiu Feng , Zhang Hua Jun
Published: October 2011

In order to reduce the error of the phase lock-loop (PLL) and compensate the delay of the low pass filter on harmonics detection, In the paper, a detecting-method without PLL in single-phase circuit is researched. In this method, the PLL and LPF are omitted, the feedback and average theory are used, so that the problem of detecting accuracy induced by PLL and real-time induced by LPF is solved. It is testified through comparison, analysis and simulation, that both methods can reduce the latency, improve dynamic response speed, the feedback method can reduce the delay in a dynamic, continuous process, while the average theoretical method can reduce the delay quantitatively.
Design and Application of the Embedded System Based Online Monitoring SiO4-2 Instrument
Authors: Tian Zeng Guo
Published: October 2011

For the requirement to control the content of traces SiO4-2 in the water and vapor in coal-fired power plants. By thie method of using spectrophotometry, the multichannel online monitoring SiO4-2 instrument is designed based on embedded system according to the Lambert-Beer theorem. The entire system is managed by the embedded real-time operating system uC/OS, based on the industrial grade embedded microprocessor AT9140800. The system satisfactorily realized the detecting of traces SiO4-2 in high purity water by the plunger pumps, cold light source monochromatic double paths optical system, “reversal reagent dosing” method. The experiments and field application show that the system has stably function, high intelligence grade, high test precision and good reproducibility, so it really meets the requirements of detecting traces SiO4-2 in different industries.
Application of PLC Pulse Command in the Step Motor Position Control
Authors: Wei Liu
Published: October 2011

Mitsubishi FX2n series PLC's CPU module comes with high-speed pulse output channels. Using these channels, you can achieve position control of stepper motor. This article describes the use of high-speed pulse output instruction on the stepper motor control to achieve the design points. Contents include: key issues of PLC equipment selection, use of pulse command, and the stepper motor selection and setting.
Study on the Critical Heat Flux Mechanism Model under the Condition of Low Velocity and Subcooled Boiling in the Narrow Channel
Authors: Zhang Ming , Zhou Tao , Liu Ping , Ran Ke , Sheng Cheng , Huang Yan Ping
Published: October 2011

Based on the bubble dynamics, the generation and separation of bubble plays a leading role in the heat transfer of boiling condition. Before the bubble separation, micro liquid layer below bubbles is evaporated to dryness and heat transfer deterioration is the ultimate cause of boiling crisis, proposed a critical heat flux mechanism in the conditions of low velocity and narrow channel. A critical heat flux mechanism model is established. By calculation, in the low mass flow range the mechanism model has a high precision to predict CHF in a larger pressure and export dry degree ranges. Using the model the relationship of parameters is studied.
The Design and Implementation of Antenna Pattern Simulation System
Authors: Zhang Zhi Wei , Ji Ai Guo , Wang Xin Cai , Xie Lei
Published: October 2011

A series of electrical parameters is used to describe the performance of antenna. Antenna pattern which is the main electrical parameter of antenna shows an aerial image of radiation field. The antenna pattern simulation system which can make antenna users install the antenna visual is developed in Visual Studio 2005 with the application of MFC programming technology. Test results show that the antenna pattern simulation system is effective.
A New Kind of Polarization Controller Design
Authors: Yin Ya Fang , Liao Yan Na
Published: October 2011

This paper give a new design of three level phase delay control polarization controller, which is the key components for state of polarization (SOP) control in the area of coherent optical communication and polarization mode dispersion compensation. Piezoelectric ceramic are used in three of the phase delay unit to realize phase delay control. The polarization controller can achieve infinite control, convert arbitrary input state of polarization to arbitrary expected output state of polarization under low control voltage.
A Lightweight Dynamic Binarization Method for 2D Barcode Scanning Terminal
Authors: Li Jia Jia , Zhang Ke Liang , Wei Gang , Wu Bai Feng
Published: October 2011

It is a difficult task to binarize image under uneven illumination, and this problem is always met in the image recognition system, such as two-dimensional barcode scanning terminal. In this paper, an efficient approach is proposed to binarize image which can tolerant uneven illumination and different light intensity. The method initializes thresholds with local average gray level and adjusts thresholds by calculating light density ratio. Due to characteristic of our approach, it can even obtain a sound result by limiting number of iterations which will seriously reduce computations and space cost. According to experiments, we can find that our method can achieve a good performance and meet the real-time requirement and quality demand for barcode scanning terminal.
The Test Method Research of Electric Light Sources Parameters and Detection of Uncertainty Evaluation
Authors: Wang Xiao Ling , Qian Xue Yao , Dai Zhyingi
Published: October 2011

Characterization of measurement uncertainty as a measure of quality of results, and obtained in the metrology of a wide range of applications. At all levels of certified calibration laboratory measurement, measurement standards of the establishment of technical reports, or identification certificate issued by the calibration and so on, require a higher level in the measuring results are given to provide the corresponding uncertainty. Measuring the quality of the results of the measurement results is a measure of the credibility of an important basis. In this paper, through concrete examples and laboratory measurement of electrical parameters of the light source of the data obtained, the Evaluation of Uncertainty.
Effect of Laser Beam on Double Wire Pulsed MIG Welding Process
Authors: Lou Li Yan , Li Huan , Wang Xu You , Wang Wei , Gao Ying
Published: October 2011

Based on the coupling of laser beam and double arcs, a novel process was investigated. This research set up the laser-double wire pulsed MIG hybrid welding system. Meanwhile the current and voltage sensors were used to detect welding current and arc voltage wave-form and high-speed videography system was used to observe the metal transfer process and arc behavior. The three signals were acquired synchronously. The results showed that the synergic action of the three different heat sources leads to a change in metal transfer mode. It was revealed that the metal transfer mode was two droplets per pulse in laser-double wire hybrid welding process while one droplet per pulse in double wire welding process with the same certain experiment parameters. And we also discovered that the arcs were attracted strongly by the laser beam.
Study on Linearity Correction Scheme for VCO Tuning Characteristics
Authors: Leng Jian Wei , Qi Xiao Hui
Published: October 2011

The linearity correction scheme for VCO tuning characteristics is the key to determine the performance of FMCW radar system. The paper introduces the basic definition of VCO tuning linearity. The linearity correction scheme for VCO tuning characteristics mainly inclues three basic schemes, they are the reactance compensation, open loop and closed loop linearity correction scheme. Analyzing the basic principle of every correction scheme detailedly, and doing a key analysis of the closed loop digital correction scheme; Discussing their advantages and disadvantages, and introducing the latest research progress of VCO linearity correction schemes in detail.
Error Factors Analysis of Large Range Flexible Jionts Six-Axis Force Sensor
Authors: Shi Zhong Pan , Ding Chang Tao , Zhao Yan Zhi , Zhao Tie Shi
Published: October 2011

In this article, a new large range flexible jionts 6-UPUR six-axis force sensor is proposed, its structure model, measuring principle and structure parameters are given, and error factors are analyzed. The influences of system noise, calibration matrix errors, processing and installation errors, structural deformation on the platform, hydraulic loading system and data acquisition system errors are dicussed and related improvement measures are suggested.
An Improved LMS_Newton Algorithm and its Analysis
Authors: Lian Rui Mei
Published: October 2011

An amended LMS Newton algorithm is proposed which create the nonlinear functional relation of the step factor μ and the error signal e (n). And the next we discuss the factors in the amended algorithm and the performance in the different IP environment. The algorithm is simple and easy to be implemented, Theoretical analysis and computer simulation show that the properties of the algorithm such as convergence speed, and steady state error ate better than those of SVSLMS algorithm.
The Semantic Retrieval Model of Manufacturing Resource Based on Rules and Similarity
Authors: Wei Jun Ying , Zhong Pei Si
Published: October 2011

Based on the common similarity algorithm between ontology concepts, this paper makes use of semantic weighted distance and introduces such factors as node density, concept attribute and concept information content, and presents an improved semantic similarity algorithm to make the measuring semantic similarity more accurate. Combined the similarity algorithm with SWRL, this paper establishes a semantic retrieval model of manufacturing resource based on rules and similarity , which applies the rules of SWRL to carry on conditional matching in the ontology concepts of manufacturing resource in order to retrieve more eligible results.
Research on Technologies of Process Integrated Control for Multidisciplinary Collaborative Design
Authors: Liu Hai Qiang , Chen Guo Jin , Su Shao Hui , Gong You Ping
Published: October 2011

For realizing information sharing and interchange between product design process and resources to solve the problems about design complicated and collaborative difficult in design process of complex product. The Process integrated control of product multidisciplinary collaborative design (MCD) was analyzed firstly in this paper, a detailed description is given of the organization structure and modeling process of MCD-oriented Integration of Product Design Meta-model ;then the process integrated control method based on MCD-oriented Integration of Product Design Meta-model was proposed, and concrete implement process of process integrated control method was introduced to effectively realize information sharing and interchange between product design process and resources, to improve quality and efficiency of product design.
The Simulation of the Planting Movement for the Dibble-Type Transplanter
Authors: Chen Yong Cheng , Qin Xin Yan , Liu Lei , Hu Shuang Ji , Wu Ke
Published: October 2011

Based on the movement procedure of the Dibble-type Transplanter, the equation of planting movement for the planting apparatus was established. According to the classic theory characteristic parameter λ>1 planting is necessary for the normal working conditions, computer simulation depending on the equation of planting movement was proceeded. The purpose of the computing simulation is to emulate the movement of the Dibble-type Transplanter. Several kind of values for λ is considered, such as the condition λ<1, λ=1 and λ>1. Through the analysis of the computer results, the classical theory λ>1 is necessary for the normal working conditions is confirmed.
Exact Analysis of a Two Stage Production Line with Parallel Unreliable Machines
Authors: Liu Jia Lu , Wu Ai Guo
Published: October 2011

This paper proposes a new analytical model of manufacturing system with two parallel machine workstations. The machines in the system are non-identical unreliable machines, and the processing times, failure times and repair times of the machines are assumed to be exponentially distributed. In this paper we for the first time give an exact model of two workstation parallel machine system. Case studies show the accuracy of the proposed model.
The Experimental Research of a Piezoelectric Linear Motor
Authors: Mo Yue Ping , Jin Hong , Xu Peng Fei , Jiang Dong Liu , Liu Yun Jing
Published: October 2011

The working principle and driven approach of a piezoelectric linear motor which uses axial stretching vibration of cascading piezoelectric elements is introduced. The prototype of that motor is designed and fabricated. It’s performance is also tested. The motor’s vibrator is a stick and moving object is a cylindrical ring which contacts with vibrating stick in the shape of cylindrical surface. The forward and backward movements of moving object are achieved by utilizing the axial stretching vibration of vibrating stick. The moving direction is altered by changed the frequency of driving signal. The structure of the motor is simple and the power supply is single sine phase. So that it is easy to be smaller. In addition, the thrust force is increased by cylindrical surface contact between moving object and vibrating stick so that it is easy to be practical also. This kind of piezoelectric linear motor is very suitable for precise positioning of objects, fine material handling, and vibration cutting tools.
Design and Experimental Model Test Research for Three Dimensional Heterotypic Interception Structure
Authors: Yang Qing , Cha Hua , Ma Xu Dong , Dai Guang Qing
Published: October 2011

In the article, the method of experimental model test is used to optimize the shape of the interception structure. The hydraulic characteristics including flow pattern, diversion ratio and water grade ling along the tunnel is studied minutely. Base on the initial design, the interception structure is revised, and the recommended scheme has been got, which properly meet the demands of hydraulic characteristics mentioned above.
The Structure and Two-Phase Flow Analysis for a New SVLX Static Mixer
Authors: Wu Qing , Li Nan , Li Quan Lai
Published: October 2011

A new SVLX static mixer is original designed by the author with the structure of alternative connection of the SV static mixing unit and cross shaped stationary helical fin. The two-phase flow is sheared, separated, impinged and rotated by SV static mixing unit, as well as whirled by the cross shaped stationary helical fin. Hence the mixer efficiency is enhanced. The most advantage of this design is the mixer efficiency is more enhanced with none applied force. Followed by the static mixer structure illustration, the preliminary analysis of the two-phase flow field is carried out, which provides some proofs for the selection and optimization of the new SVLX static mixer structural parameters.
Research of Optimization Design of Structural Concept about Portal Frame
Authors: Li Dong Nan , Wu Jing Yu , Chen Cun En
Published: October 2011

There're two issues should be concerned about during the optimization design of structural concept. The one is The using performance of structure, the another is the cost of foundation should be contained in the cost of whole structure. And it is suggested that The cost performance in value engineering should be used during the optimization design of structural concept. In this paper, the method and the process of the optimum structural design is expounded by optimizing a structural concept of project.
A Multi-Objective Memetic Algorithm Based on Chaos Optimization
Authors: Ammaruekarat Paranya , Meesad Phayung
Published: October 2011

In this research, a new Memetic Algorithm (MA) for Multi-Objective (MO) optimization is proposed, which combines ability of chaos optimization algorithm is proposed based on the ergodic and stochastic properties of the chaos variables. A new MA updating strategy is proposed based upon the concept to deal with the problem of premature convergence and diversity maintenance within the chromosome. The proposed features are examined to show effects in MO optimization. The comparative study shows the effectiveness of the proposed MA, which produces solution sets that are highly competitive in terms of convergence Measurement and Spread Measurement.
A Comparison of Accuracy Based on Data Imputation between Unconstrained Structural Equation Modeling and Weighted Least Squares Regression
Authors: Phothi Narong , Prakancharoen Somchai
Published: October 2011

This research proposed a comparison of accuracy based on data imputation between unconstrained structural equation modeling (Uncon-SEM) and weighted least squares (WLS) regression. This model is developed by University of California, Irvine (UCI) and measured using the mean magnitude of relative error (MMRE). Experimental data set is created using the waveform generator that contained 21 indicators (1,200 samples) and divided into two groups (1,000 for training and 200 for testing groups). In fact, training group was analyzed by three main factors (F1, F2, and F3) for creating the models. The result of the experiment show MMRE of Uncon-SEM method based on the testing group is 34.29% (accuracy is 65.71%). In contrast, WLS method produces MMRE for testing group is 55.54% (accuracy is 44.46%). So, Uncon-SEM is high accuracy and MMRE than WLS method that is 21.25%.
Design of Heat Metering System Based on MCS-51
Authors: Zhang Xue , Chen Wen Gang
Published: October 2011

The heat metering system is one of the key facilities to reform the heating systems of city and to charge according to heat quantity consumption. The design of heat metering system based on mcs-51 includes two sections--hardware and software. The hardware section is composed of flow sensor, temperature sensor and single-chip microcontroller (SCM for short). The system can calculate heat quantity intelligently, so the users pay the actual heat quantity consumption.
Acoustic Sensitivity Analysis Using the Distributed Source Energy Boundary Point Method
Authors: Chen Li Tao , Chen Jian , Zhang Bing Rong , Zhang Wu
Published: October 2011

The determination of the sensitivity of the acoustical characteristics of vibrating systems with respect to the variation of the design parameters can provide a method to low-noise design of mechanical structure objectively and quantitatively. Using the Distributed source energy boundary point method, the expressions of the change of the acoustical energy density with respect to design variable is presented in this paper. The Distributed source energy boundary point method is a speedy and precise method which can avoid the complex computing of the singularity integral in EBEM. The correctness and availability is validated by the numerical simulation.
Energy Analysis of Gas Engine Driven Heat Pump
Authors: Jiang Ning , Gao Zeng Liang
Published: October 2011

In the face of power shortages, an analytical investigation on the displacement of electrically driven heat pump by gas engine driven heat pump is undertaken. The energy conversion process comparison based on existing data between electrically driven vapor compression heat pump (EVCHP) and gas engine driven vapor compression heat pump (GVCHP) indicates that GVCHP can improve the energy efficiency and exergy efficiency with the application of waste engine heat recovery for heat supply and the majority of loss in GVCHP occurs in the engine.
Combustion and Emission Characteristics of CNG Engine at Idle Conditons
Authors: He Yi Tuan , An Na
Published: October 2011

The effects of ignition advance angle and excess air ratio on the combustion and emissions characteristics were investigated on a CNG engine at idle conditions. The throttle valve was fully closed. When the parameters were changed, the stepper motor was adjusted automatically to control the engine speed at 800r/min. When the θi is changed from 40 to 10o BTDC, the maximum ITE and the maximum power are observed at λ=1.1. As λ increases, the maximum ITE is corresponding to a greater θi. The COVimep will be increased if the θi is too advanced or too small. When λ is more than 1.3, the COVimep increases obviously. When λ=1.1, NOx emissions get the highest level.
Simulation on Effect of EGR on Oxy-Fuel IC Engine
Authors: Yu Xiao , Wu Zhi Jun
Published: October 2011

Internal combustion Rankine cycle engine uses oxygen instead of air as oxidant during the combustion process in gasoline engine. Recycled fluid is employed to control the reaction rate and recycles the exhaust heat inside the cylinder as well. CO2 could be recaptured after separated from the exhaust gas (CO2 and water vapor) during condensation, and an ultra-low emission working cycle is achieved. Considering the side effects of water injection process, EGR is employed to control the combustion process and thermal efficiency of the oxy-fuel combustion cycle is calculated and optimized in this paper. Results show that the application of EGR could slow down the combustion process effectively, and appropriate EGR rate matched with ignition timing would control the reaction rate and cylinder pressure, therefore enhance the engine performance.
Two-Stroke Engine with Fuel Semi-Direct Injection Using FAI System
Authors: Wu Ming Ming , Yang Yan Xiang , Xi Da Guang , Zhang Ping , Jin Zhong Guo
Published: October 2011

This paper presents the feasibility of semi-direct injection on a 50cm3, two-stroke motorcycle gasoline engine, which is applied FAI semi-direct injection fuel system. The structure and fuel injection system is improved based on the original carburetor engine and the FAI injector is easily installed. The results of laboratory and drive test show that, compared with the original carburetor fuel system, through optimization calibration of fuel injection timing and injection quantity can improve power performance and fuel economy.
Adsorptive Removal of Methylene Blue by Ginkgo Leaf Powder
Authors: Mu Jin Xia , Shi Ming Juan , Wu Xiao Ying , Li Jin Ye
Published: October 2011

The adsorption of methylene blue (MB) from aqueous solution using a low-cost adsorbent, ginkgo leaf powder, has been studied. The equilibrium data were fitted to Langmuir and Freundlich isotherms and the equilibrium adsorption was best described by the Langmuir isotherm model with maximum monolayer adsorption capacities found to be 39 mg/g. The sorption was analyzed using pseudo-first-order and pseudo-second order kinetic models, and the sorption kinetics was found to follow a pseudo-second order kinetic model. Ginkgo leaf appears as a prospective adsorbent for the removal of methylene blue from aqueous solution.
Ash Characteristics Analysis during Co-Combustion of Biomass and Coal
Authors: Bian Su Fang , Wang Yong Zheng , Tian Su Le
Published: October 2011

The ash characteristics is closely related to the fuel compositions, and chemical reactions happened between the compounds of ash during co-combustion of biomass and coal. Through the phase compositions analysis of ash from co-combustion of biomass and coal, the results show that KCl(g)mainly reacts with aluminosilicates to form potassium-aluminosilicates and part of KCl(g)also can be sulfated by SO2during co-combustion. In the fuel, CaO and MgO may react with aluminosilicates to form CaAl2Si2O8and Mg3Al2Si3O12with low melting temperature, which can reduce the content of potassium-aluminosilicates and drop the ash melting point temperature.
Experimental Study on Preparation and Pb2+ Adsorption Capability of Ferric Salt Modified Sands
Authors: Ding Chun Sheng , Ma Xiao Yan , Zhou Ying Long , Ning Ping
Published: October 2011

Ferric salt modified sands were prepared with quartz sand as a carrier and ferric salt coating by the two methods of repeat high-temperature process and repeat alkaline deposition process. The specific surface area of two ferric salt modified sands were detected, and their Pb2+ adsorption capability in different conditions were also described in this paper. The results showed that the specific surface area of ferric chloride and ferric nitrate modified sand was 2.468m2/g and 4.247m2/g respectively, which was 6.910 and 12.612 times more than that of raw quartz sand. In the neutral pH condition, the removal efficiency of Pb2+ by raw quartz sands was approximately 37%, in contrast, the removal efficiency reached 85% by ferric nitrate modified sand and over 90% by ferric chloride modified sand, and it was much higher than that of raw quartz sand.
Numerical Simulation of Particle Mixing Feature for a Gas-Liquid-Solid Three Phase Flow in an Impeller-Driven Stirred Vessel
Authors: Liang Ru Quan , Yan Fu Sheng , Ji Jun Hong , He Ji Cheng
Published: October 2011

In this work, numerical simulations have been conducted to investigate the particle mixing feature in a stirred vessel driven by an impeller. The Eulerian multi-fluid model has been employed along with the standard k–ε turbulence model to simulate the gas-liquid-solid three-phase flow in the stirred vessel. The effects of impeller speed and immersion depth of impeller on the particle distribution are discussed. The results show that the particle volume fractions nearby the vessel bottom are large on the vicinity of the side walls of the vessel and small in the vessel middle region at different impeller speeds and immersion depths.
Reliability Analysis of the Diamond Saw Blades Based on ANSYS
Authors: Zhang Yun Feng , Qi Zhen Nan , Lang Xi Ying , Zhao Min
Published: October 2011

The structure reliability of the diamond saw blade in milling process is studied. With probability design features of ANSYS, take the flange diameter ,thickness, diameter of the diamond saw blade and load suffered in the milling process as input variables, and take the maximum equivalent stress of dangerous parts of the diamond saw blades stress as output variable. The diamond saw blade structure reliability is analysed using Monte Carlo method and the maximum equivalent stress value cumulative distribution and dangerous parts of various parameters on the distribution of the maximum equivalent stress sensitivity under the impact of the load are got. The result provides a theoretical basis for improving the parameters of diamond saw blade and has the significant practical and theoretical value for the stone processing theory and diamond saw blade study.