bluuebunny/crossref_metadata_2025 huggingface dataset:
The Improvement and Simulation on the Dynamic Model of Hydraulic AGC System
Authors: Xing Juan Juan
Published: December 2012

The paper uses the object-oriented modeling method to analysis the hydraulic AGC system and the operation mechanism about a strip mill. It discusses the Coulomb force and roll eccentricity which usually were ignored on rolling process. And improves the mathematical model that reflect the actual AGC system. By simulation, we compared it with the actual rolling process and verified the correction of the mathematical model. And, it will make the good foundation for on-the-spot practical application.
The Optimal Combination of the Planar Bar Group on an Eight-Link Mechanical Press Based on MSDV
Authors: Ge Xin Fang , Shen Yuan , Zhu Chan Gan
Published: December 2012

Based on the MSDV (the minimum sum of the displacement variance), the optimal combination of the bar group on a planar eight-link mechanical press is studied in this paper. Firstly, we establish the kinematic equations of a simplified planar eight-link by dividing the planar eight-link into three modules and resolving them step by step. With the established kinematic equations, we simulate the movement of the planar eight-link and obtain its curve of displacement, velocity and acceleration. Final, we get the optimal combination of the eight-link mechanical press based on MSDV. The simulation of the optimal planar eight-link bar group indicates that the displacement curves of the four eight-links included in a eight-link mechanical press almost coincide.
Using Taguchi Method to Optimize Molding Process Parameters of Chair Base
Authors: Wu Hsueh Lin , Wang Ya Hui
Published: December 2012

In this study, volumetric shrinkage at ejection of the chair base in the injection process, application of the 3D CAD software pro/e to design the shape of the product, and then combines moldflow simulation analysis and Taguchi method with L25 Orthogonal Array to determine the optimal injection molding parameters combination. In the Taguchi L25 experimental design, the six controlling factors used are melt temperature, mold temperature, injection time, packing time, packing pressure and cooling time, the result of experiment revealed that the optimum combination of parameters was the A2 (melting temperature 265°C), B3 (mold temperature 40°C), C2 (injection time 1.7sec), D4 (packing pressure 95%), E5 (packing time20sec), F5 (cooling time 20sec). The results show that the combination of Taguchi method and Moldflow can not only improve the molding process parameters effectively, but also optimize the quality of the products.
The Study of Coupled Transfer of Heat, Moisture and Air in Reservoir Porous Media
Authors: Jia Yong Ying , Wang Zhi Guo
Published: December 2012

This paper studied on heat and mass transfer mechanism of steam in reservoir porous media, built coupled mathematical models for heat and mass transfer in reservoir porous media. “Black box model” and “white box model” are first proposed in heat and mass process analysis of reservoir porous media. Temperature field has been simulated by CMG-STARS software. Our work will give theoretical basis and technical support for enhanced oil recovery technology.
Calculation and Analysis of the Thermophysical Parameters of Micro-Emulsified Ethanol-Diesel Blended Fuel
Authors: Hu Peng , Sun Ping , Ning Hai Qiang , Mei De Qing
Published: December 2012

The micro-emulsified ethanol-diesel blended fuel is an ideal alternative oxygenous fuel for diesel engines due to its physical and chemical properties and excellent combustion characteristics. Fueled with this fuel, a diesel engine can give off remarkably lower harmful emissions,especially particulate. It is necessary to take into account instantaneous variations of the thermophysical parameters of blended fuels with temperature and pressure. For these reasons, this paper use the empirical formulas calculates the thermophysical parameters of this blended fuel，including the specific heat capacity, viscosity, thermal conductivity and diffusion coefficient. And the effects of the temperature, pressure and ethanol content on the initial blended fuel’s condition are investigated. The results show that the addition of some ethanol to the diesel oil can contribute to the evaporation of the micro-emulsified ethanol-diesel blended fuel, and these empirical formulas are able to be employed to calculate the thermophysical parameters of this blended fuel.
The Electromechanical Dynamics Simulation of Complex Frequency Vibrating Screen with Two-Motor-Driving
Authors: Hou Yong Jun , Liu Qi Yu
Published: December 2012

In this paper, the mechanical model of the complex frequency vibrating screen with two-motor-driving is established, and its dynamic equation is deduced base on Lagrange equation. Then the simulation model is established by Simulink. Its exciter is set up by the module of Permanent Magnet Synchronous Machine. Through running the simulation model, the simulation result of the complex frequency vibrating system with two-motor-driving is analyzed and the influence caused by varying the structural parameters on operating characteristics of vibrating system is discussed. The result of the study has important reference value to develop the dual-motor complex-frequency vibrating machinery.
Vibration Character Analysis and Calculation for Hemispherical Resonator Gyro
Authors: Yu Hao
Published: December 2012

Hemispherical Resonator Gyro is rotation-sensing instrument and has the merits of reliability and longevity etc. The precision of HRG is depended on the vibration character of hemispherical shells. Using the semi-analytic method, this paper discussed vibration character of hemispherical shell resonator and derived an algorithm of semi-analytic spherical elements. The method applies displacement function with toroidal analysis and axial discrete, so original two dimension problem is reduced to one dimension problem. The new method is very much simplified and can efficiently calculate the correlative physical character of hemispherical shell resonator, so it has high practical value for engineering application.
The Torque Characteristics of the Cycloid Permanent Magnetic Gear Based on Halbach
Authors: Hao Wei Na , Zhu Xue Song , Zhou Jun
Published: December 2012

This paper presents a new cycloid permanent magnet gear(PM gear) based on Halbach array, which has the advantages such as extreme torque density and a very high gearing ratio. And the Halbach array can produce one-sided filed that will increase the magnetic filed intensity. The air-gap magnetic field of cycloid PM gear based on Halbach is got by adopting finite element method. At the same time, to research the torque characteristics, the factors which affect the magnetic torque of cycloid PM gear are studied respectively through the FEM, such as torque angle，offset，thickness of permanent magnets and yoke irons.
The Study on the Digital Stimulation Software of Planer Enveloping Toroidal Worm
Authors: Xu Hua , Zhou Liang Yong , Li Zhi Guo
Published: December 2012

The digital technology of the stimulation of the toroidal worm is discussed in this paper. In this paper, the technical scheme, the technical roadmap of the digital stimulation of the planer enveloping toroidal worm, the key of the stimulating soft are decided, the function of the digital stimulation software are introduced, too.
The Reasearch on the Seriation and the Standardization of the Geometric Parameters of the Planer Enveloping Toroidal Worm
Authors: Wen Rong Tian , Zhou Liang Yong , Xu Hua
Published: December 2012

The national standards of the center distance, transmission ratio and transmission power of the planer enveloping toroidal worm are declared in abroad, but the geometric parameters and the main technology parameters is still calculated by the engineers according the design formula of the design handbook. At the same time, the non-standard parameters of the worm influence the standardization of the cutting tools especially the hob and add many difficulties and work load for the processing of the planer enveloping toroidal worm. The curvity modification theory and the optimization design software of the planer enveloping toroidal worm are introduced. The software is can not only optimize the relative parameters of the planer enveloping toroidal worm but also stimulate the engaged performance of the worm pair. Based on each kind of planer enveloping toroidal worm, the series of optimized parameters are calculated through the optimization design. The parameters which collect within national standards are the seriation and standardization parameters.
Soft Furnishing Material in Interior Space
Authors: Chen Xiao Jun , Wang Fu Ting
Published: December 2012

In the case of the improving economic, people no longer pursue luxury and the copies of other homes in house decoration, but have a higher spiritual level requirements. Interior soft decoration has become an unavoidable mean of decoration in modern house decoration and the important direction of interior decoration. The interior soft decoration art is a dynamic art. Its unity can bring vitality to space and build an ideal interior environment that is full of culture taste and comfort. Interior soft decoration will be the future development of housing decoration industry and the popular trend.
A Study on the Impact of Different Application Ratios of Ultra-Low Emission Green Building Materials on Human Health in Indoor Environments
Authors: Chen Cheng Chen , Kuo Wen Chang , Chiang Che Ming , Liu Kuang Sheng , Nieh Chih Kao
Published: December 2012

This study is a 3-year national research project. The objective of this study is to examine the influence of formaldehyde and VOC emissions with different application ratios of ultra-low emission (ULE) green building materials(GBMs), and their impact on human health in indoor environments. The testing methods for aldehyde and ketone substances, and VOC substances used in this study are referenced from the ASTM D6670-01 regulations by full size chamber test method, and the ISO 16000-3 and ISO 16000-6 regulated aldehyde and ketone substance, and VOC sampling and analysis methods. Experiments are conducted at 0%, 30%, 50%, 80% and 100% (5 groups) ratios of ultra-low emission (ULE) green building material used, and the emissions are analyzed. The results show that the higher the utility rate of ULE green building material, the more the interior concentration of TVOC can be effectively lowered. Using at least 30% ULE green building material can achieve indoor air quality that is less than the TVOC value standard of 3 ppm set by the Environmental Protection Administration of Executive Yuan, Taiwan. However, under the standard of 300 ug/m3, set by the World Health Organization and the GreenGuard children’s standard of 220 ug/m3, our research shows that the experiment groups using 30%, and not using (0%) ULE green building material, present a health risk, based on the above standards. However using more than 50% ULE green building material can effectively lower the VOC emission level, indicating that by increasing the use of ULE green building material, the IEH can be maintained.
Design and Implementation of Control System in Ultrasonic Detection Machine for Shaft-Tube-Like Part
Authors: Zhang Xin Ju , Yue Yan Fang , Liu Zhen Yu , Chang Hong Jie
Published: December 2012

Nondestructive inspection should be carried out before a shaft-tube-like part of an important machine assembly. The Ultrasonic Detection Machine was typically designed to detect if a shaft-tube-like part has some imperfection. There are three work posts in this equipment, they work continuously. This approach makes it very easy to split up a complex transformation into a series of simple transformations arranged in a pipeline. The machine includes control system built with SIEMENS CPU224 programmable logic controller (PLC), hydraulic driving system and the ultrasonic detection. Practices show that the prototype built can detect a key part quickly and efficiently before assembled, which is used in military, high pressure vessel, aerospace field and huge bridge, etc.
Design and Implementation of Monitoring System for Equipments in the Workshop Based on IOT
Authors: Liu Ling , Yan Guang Rong , Lei Yi
Published: December 2012

This paper puts Internet of Things in a wider context: how it relates to the monitoring system for equipments in the workshop in the manufacturing domain and how to apply IOT along with other new techniques for developing new monitoring system for equipments in the workshop, and proposes the necessity of developing closed-loop monitoring system for equipments in the workshop based on IOT. In this paper, the concept and constitution of closed-loop monitoring system for equipments in the workshop based on IOT is presented, systematic basic working principle and hardware structure topological graph is given, implementation methods of each component of the system are introduced. The closed-loop monitoring system for equipments based on IOT given in the paper can ensure the safety of plant and its circumambience and reduce the loss of fault. It is a typical application of IOT in the manufacturing domain.
Design of a Heat Exchanger and Temperature Homogenization Device for Airflow in Chamber
Authors: Guan Wei , Meng Xiao Feng , Dong Deng Feng
Published: December 2012

Traditional heat-exchanger can ensure the air in chamber a specific bulk temperature, but cannot guarantee the temperature distribution is even. A heat exchanger and temperature homogenization device was designed to precisely adjust the temperature and temperature uniformity of airflow. The device was made up of several parallel processing units. Each unit was an independent heat exchanger with temperature homogenization function. To improve the design of the device, evaluation indexes were proposed for both heat transfer capability and temperature uniformity of the airflow field. Analysis and comparison of 3D numerical simulations using FLUENT were made to figure out the optimal way. The model proposed can provide guidance for practical applications. The final results indicate field synergy principle can be used to analyze the temperature homogenization of airflow.
High Speed Photography and 3-D CFD Simulation of Pulsed Anti-Riots Water Cannon Launch Process
Authors: Ao Yun Hui
Published: December 2012

In order to study the atomization mechanism of gas-liquid two-phase flow, high speed camera was used to photo the water-jet, the jet images at different time were gained, CFD technology was used to simulate the launch process of water cannon in 3-D Model, Large Eddy Simulation and VOF model were used to describe the turbulent flow and track the gas-liquid interface in and out of launch pipe. The gas-liquid distribution image of experiment and simulation, water-jet velocity of experiment and simulation both matched well with other. The simulation results show that the flow pattern in launch pipe of water cannon changed from atomization pattern to annular pattern and finally slug pattern, the conclusion has significant meaning to the study of second spray and first atomization of water-jet.
Experimental Study on Laser Metal Deposition of FGMs with Ultrasonic Vibration
Authors: Qin Lan Yun , Wang Wei , Yang Guang
Published: December 2012

Referring to the ultrasonic vibration effect on casting, welding and laser cladding, the paper demonstrates the feasibility that it can be also used in Laser Metal Deposition(LMD)of titanium alloy to protect the defects such as crack,pore and oxidation and refine the grain size and improve the distribution uniformity of solidified structure.So the paper applies ultrasonic vibration system to fabricate the functionally graded materials(FGMs) samples and analyses its effect on the specimen microstructure and mechanical property by experiments.The results show that ultrasonic vibration can suppress the formation of pore、refine the grain and make the TiC hard phase more homogeneous in the FGMs parts, which is also indicated by the microhardness tests
Hyperbolic Heat Conduction for a Layered Medium of Finite Thickness with an Interface Crack
Authors: Wang B.
Published: December 2012

This paper studies the thermal flow concentration near an interface crack in a layered medium. Solution method for the thermal flow intensity factor is established. Both the Griffith crack and the penny-shaped crack are studied. Limiting cases of the current problem include (1) the solution of crack problem associated with classical Fourier heat conduction, (2) the solution of an interface crack in an infinite layered medium, and (3) the solution of a crack in a homogeneous medium.
Improved Channel Estimation for OFDM Systems by Exploiting Ordered Space
Authors: Zhou Yu Ying
Published: December 2012

In this paper, we propose an improved channel estimation method for orthogonal frequency division multiplexing (OFDM) systems in sparse multipath fading channels. The proposed method transforms the channel estimates into an ordered space and uses the minimum description length (MDL) criterion to estimate the number of paths and the path positions. Simulation results demonstrated that an improved channel estimation performance is obtained due to the reduction of signal space.
Model Reconstruction of Engine Case Based on MBD
Authors: Yang Zhi Guo , Tang Shui Yuan , Zuo Jian Hua , Fan Hong Li , Wang Lian Hong , Jian Zhong Hua
Published: December 2012

3D CAPP has become trend. Based on recognition of manufacturing features, the design model is reconstructed. First, the features of the engine case are classified. The workflow of reconstruction is put forward. Then, the detail ways to identifying manufacturing features are illuminated, and the functions are listed. The design model is reconstructed by redefining geometric and no-geometric information, including surfaces, holes, slots, text, sizes, and so on. The model of the engine case is reconstructed in the developed system.
Modeling and Simulation of Stick-Slip Motion of a Position Stage
Authors: Chu Biao , Jin Yi , Zhu Chang An
Published: December 2012

In various fields of positioning engineering, it is important to clarify the sliding motion, especially the stick slip phenomenon, for a wide range of scales positioning stage which works at a relative low sliding speed. In this paper, the sliding system of stick-slip motion is modeled based on a mass-spring-dampness system which includes four parameters. Meanwhile, a numerical simulation based on the Pro/ENGINEER software was conducted in order to study the relationship between stick slip behavior and its impact factors, such as the mass, stiffness, friction coefficient and damping coefficient. Moreover, experiments results are also provided to show the rationality of the theoretical analysis and the computer simulation.
Pressure Drop Coefficient Identification of Steam Network Model Based on Genetic Algorithm
Authors: Ma Yong , Sun Yan Guang , Yu Li Ye
Published: December 2012

This article establish a coupled thermo-hydraulic mathematical model for steam network by adopting a set of equations The model is simplified according to steam flow features in pipe networks. It is concluded that coupled iteration can be employed in steam network. It is well-known fact that, Steam Network mathematical model must be identified first. Here, identification is defined as process in which a number of Steam Network model parameters are adjusted until the model mimics behavior of the real Steam Network as closely as possible. The case study demonstrates that the integrated identification method gives modelers the maximum flexibility to improve the model accuracy and robustness. Test result indicates the advantage of genetic algorithm.
Research on Arrangement and Vision of Vehicle Rear View Mirror
Authors: Jin Jia Qi , Li Hao
Published: December 2012

This paper present the determination method of eye point in SAE, obtain the rearview mirror’s design formulas based on that. This paper get the relationship between the related attributes of rearview mirror and the Angle of installation through the study of Rearview mirror vision and related laws and regulations, determine the location of the rearview mirror to Meet requirements of regulatory and Ergonomics.
Research on Dimension Synthesis of Straight-Lines Mechanism for Rigid-Body Guidance by Using Numerical Atlas Method
Authors: Sun Jian Wei , Lu He , Wu Xin , Guo Miao
Published: December 2012

In this paper, the relation between angle of rotation function of the five-bar and similar four-bar mechanisms’ rigid-body and Coupler Rotation-Angle function is discussed. The principles of reduce the numerical atlas are proposed. A numerical atlas database comprising 240498 basic dimensional types is set up. Make the five-bar and similar four-bar mechanism for Rigid-Body Guidance with prescribed timing possible. Finally, an example is given to prove it.
Research on Low-Cost Design Method of Offshore Platform DPS before Construction
Authors: Yamamoto Ikuo , Ishida Shuichi , Asanuma Takayuki , Maeda Katsuya , Nuijten René , Grimmelius Hugo T.
Published: December 2012

In this paper a description is given about the implementation of the Dynamic positioning system in the Seabex (special model ship) software of ship. The effectiveness of DPS is confirmed by numerical simulation and tank test using a model ship. This research is an effective approach to design an offshore platform DPS at one-tenth of cost of conventional method.
Brazilian Geological Sandstone Characterization and its Utilization as Aggregate in Structural Concrete
Authors: Fontanini P.S.P. , Pimentel L.L. , Jacintho A.E. , Migliato C.L.
Published: December 2012

The sandstone extraction is an essential activity to the production of specific products. It is employed in the civil construction sector. However, there is still a deficiency in physical and geological characterization. This research develops two experiments in the sandstone matrix located in São Carlos region (City of São Paulo State – Brazil). The first experiment is related to the geological aspect of the specific sandstone. It identified the geographic location and investigated the porosity and absorption rates of the Brazilian sandstone rock, besides verifying its compressive strength. The purpose was to identify and evaluate possibilities of sandstone use in the structural concrete composition. The second experiment tested the concrete strength with this aggregate. Some quantities of crushed sandstone were used as fine aggregate in the manufactured concrete. The experiments presented sandstone properties and sandstone aggregate possibilities in concrete composition. The present study is a result of an undergraduate project, aiming to contribute with new information on the Brazilian sandstone characterization and concrete strength application with the sedimentary aggregate. This work showed some possibilities to use this type of yellow and red sandstone as aggregate.
Research on Triangular Mesh Simplification Algorithm of Virtual Object Model
Authors: Wang Yang Ping , Dang Jian Wu , Yang Jin Yu , Wang Song
Published: December 2012

To improve the model quality of mesh simplification, reduce the model deformation and the lost of the detail characteristics with multiple folding, the paper represents a triangular mesh simplification algorithm based on edge-surface folding. The algorithm introduces curvature characteristics of model vertexes into the weight calculation of effective points, and introduces weight of triangular facets at the same time. The facets with the smallest weight adjacent the candidate edge is shrunk. The experiment results show that the algorithm has provided a higher quality of model simplification and effectively kept the graphic features.
Stress Performance Analysis on New Type of Concrete-Filled Steel Tube Pre-Stressed Truss Continuous Beam Bridge
Authors: Yuan Xiao Hui , Lu Zhe An
Published: December 2012

This paper takes the construction of Gan Hai-zi concrete-filled steel tube pre-stressed continuous truss Beam Bridge as the engineering background. Combined with the actual construction process of the bridge, taken the main structure of the bridge as the typical prestressed composite structure and used the finite element joint section to simulation the whole construction process of the 35th and 36th experimental cross composite structure of the bridge. Theoretical analysis combined with the field test, and the calculation results are in good agreement with the experimental results，which shows that the construction mechanical performance of the new bridge structure is good.
Study on Optical Dot Gain Model Based on Point Spread and Probability Methods
Authors: Xu Jun Fei , Xu Jin Lin , Xu Yong Chi
Published: December 2012

Optical dot gain is the key point of halftone reconstruction study, and has always been a meaningful topic of theoretical study. The Yule–Nielsen formula is by far the most widely used research method of optical dot gain. However, solving the Yule–Nielsen parameter n remains a difficult problem. This paper disregards solving for the Yule–Nielsen parameter n, analyzes the light scattering and osmotic effect of halftone presswork, deduces the exact expressions of blank area of presswork, and determines the reflectivity of the dot part and halftone presswork according to the point spread function and probability method. Furthermore, this paper analyzes how the optical dot gain depends on the dot area coverage of presswork, ink layer transmittivity, and paper-based spectral reflectivity. In addition, a new algorithm model for optical dot gain is established. By employing the Clapper–Yule Model to calculate the spectral transmittance of printing ink and comparing it with the practical measured spectral reflectivity of the halftone presswork proof, the accuracy of the model established in this paper is fully verified.
The Design and Realization of the Visualization System of Acoustic Radiation Based on NAH
Authors: Zhou Lin Na , Lou Jing Jun , Zhu Shi Jian
Published: December 2012

The characteristic of the acoustic radiation of vibrating structure is the important factor in valuing its performance. This paper puts forward a visualization system of the acoustic radiation based on NAH which combines the measurement, data management and visualization. The visualization technology it adopts point a new way to the observation of the acoustic radiation. Experiments have shown that this system can offer a complete solution for the measurement and research of the radiation field.
Tolerance Analysis Method Using Improved Convolution Method
Authors: Liu Shao Gang , Jin Qiu
Published: December 2012

Convolution method is studied to analyze statistical tolerance for linear dimension chain and nonlinear dimension chain. Hybrid convolution method is proposed, which is the integration of analytical convolution and numerical convolution. In order to reduce the algorithm errors, improved convolution method is proposed. Comparing with other statistical tolerance analysis methods, this method is faster and accurate. At last, an example is used to demonstrate the method proposed in this paper.
The Model Building Research of Product Innovation Design Quality Based on QFD and KANO
Authors: Zong Li Chen , Yu Sui Huai , Li Bo
Published: December 2012

The original of product design innovation move from driving by technology innovation to customer needs, technical innovation and service pattern’s CTS driving(Customer Needs、Technological Innovation and Service).The previous theory of product design did not suit to new environmental factor and also did not reflect and synthesize other factor for product design.QFD is a system method which transform customer needs to definite measure for design product or design service. The theory of KANO provide five types of customer needs, with analyzing the needs of customer in order to provide design direction for product design. Paper research with the main line of QFD, through HOQ technique of QFD, delivering customer needs to designer, utilizing KANO model to identify various kinds of needs, through the transform of importance degree, sequencing importance degree of AHP for customer needs, combining above all so that clarify direct of design in order to ensure the quality of design.
Study on a Novel Electrical-Assisted Pressure Welding Process of Thin Metallic Foils
Authors: Xu Zhu Tian , Peng Lin Fa , Yi Pei Yun , Lai Xin Min
Published: December 2012

Joining of very thin metallic foils is required in vast applications such as fuel cell plates, micro reactor carriers, heat exchanger etc. Pressure welding is found to be an efficient method. However, some metals (e.g., stainless steel) are difficult to achieve successful solid state bond at room temperature. In present study, a novel electric assisted pressure welding (EAPW) process was proposed. In the EAPW process, electric current was introduced to the metal sheets under pressure welding in the purpose of reducing welding difficulty. An EAPW experimental setup was developed to study the joining process of Stainless Steel (SS) 316 sheets. The effects of electric current as well as process conditions on the final bond strength were experimentally studied. It was found that SS316 sheets could not be bonded without current at room temperature. However, they were successfully joined with electric current introduced. The co-effects of temperature and electric current were also investigated experimentally. It was found that elevated temperature caused by Joule heat is not the only reason for the improvement of the welding performance. The so-called electro-plastic effect also makes a contribution in EAPW process. Finite element method (FEM) was also employed to analyze the process and the welding behavior was discussed.
A Virtual Cellular Manufacturing System Design Model Based on Axiomatic Design Theory
Authors: Han Wen Min , Zhao Jin Lei , Chen Ying
Published: December 2012

This paper presents a virtual cellular manufacturing system building model based on axiomatic design theory. By now most discussions of virtual manufacturing cellular focus on how to format a virtual cell and how to optimize a virtual cell in the execution layer. The attention to “system cost” and “efficiency” mostly were given only after the system-generated. In this paper we build a complete virtual cellular manufacturing system, and pay attention to “system cost” and “efficiency” in the conceptual design phase to make sure the techniques and resource which we choose is low-cost and non-redundant. Meanwhile in Process Domain of the model, we blend the logistics balance idea of TOC theory, waste elimination philosophy of lean manufacturing and the existing conclusions of the virtual cell literature to make sure the tools which we choose are more effective. The model will clearly set out the concept, principle and technology hierarchy of virtual cellular manufacturing system, and can be an effective map for manufacturing enterprises with low-volume and high-variety to apply the virtual cellular production.
Research on Design and Development for Integrated Production Planning and Scheduling System of Rare Metal Manufacturing Based on WEB Platform
Authors: Yu Jian Guo , Feng Mei Lin , Wu Yu , Huang Peng Peng
Published: December 2012

Aiming at the design and development of integrated production planning and scheduling system(PPSS) of rare metal manufacturing, the goals and main functions of the integrated production planning and scheduling system were analyzed and designed based on the analysis of rare metal manufacturing enterprise’s main characteristics and management status. Through analysis of the present situation and trend of production planning and scheduling, an integrated system architecture was proposed. Key technologies of system integration and system developing were delivered, and some key functions of production planning and scheduling system which include annual plans management, monthly plans management, MRP management, production scheduling management and production Kanban management were developed based on JSP technology and WEB platform. The practical applications in some rare metal manufacturing enterprises were proved that the integrated production planning and scheduling system could enhance the manufacturing management level effectively.
Analysis of Pose Accuracy Reliability and Sensitivity for Six Degrees Freedom Welding Robot
Authors: Li Jia , Li Ye , Zhao Meng , Chen Shuai
Published: December 2012

With the continuous development of industrial automation, robots are applied to various fields of industry increasingly, and the robot pose accuracy become an important issues. Through the establishment of the robot parameterized virtual prototype model, the error of bar length, joint angle and joint space have been taken into account, and the Monte Carlo sampling method is used to process a number of simulation analysis. The reliable probability which is given within the error limits is calculated, and finally through sensitivity analysis, the conclusion is drawn that different error factors influent the robot end error differently, which have a certain significance for the allocation of the manufacturing tolerances of the robot and trajectory planning.
Application of the Optical Energy Wait-Up Technology in Remote Control Standby Devices
Authors: Chen Yong Yi , Kang Xin Zuo
Published: December 2012

This paper begins with a brief description of the prevailing standby methods and their drawback of having to rely on the municipal mains supply at all times and wasting electrical energy. It then proceeds to elaborate on the energy conservation principle of the optical energy wait-up technology, which has been granted a national utility model patent (No. ZL 2011 2 0489460.7). The elaboration is focused on the working principle and process of the changeover of the power supply of the device from the grid to an optical battery while it is in standby mode, as well as on the basis for the choice of components. This utility model consumes energy in milliwatts and has practical value for energy conservation and emission reduction. Its commercialization is expected to contribute significantly to energy conservation in the entire society.
Control of Mach Reflection by a Single Laser Pulse
Authors: Wang Dian Kai , Hong Yan Ji
Published: December 2012

In the supersonic engine inlet, Mach Reflection probably appears when a supersonic flow goes through the symmetric wedges, causing a great total pressure loss. A single pulsed laser energy deposition leads a decrease of the Mach stem height and reduces the total pressure loss. By solving the two-dimensional RANS equations, with the condition of symmetric wedges at 22 degrees, and the free stream Mach number 3.45, influences of the deposition location and the magnitude of pulsed laser energy in Mach Reflection are investigated. The results indicate that when laser energy rises from 70mJ to 270mJ, the height of Mach stem changes and a vale value is obtained. The deposition position is also optimized.
Energy Consumption Analysis of Quadruped Robot with Trot Gait
Authors: Lei Jing Tao , Wang Feng
Published: December 2012

Energy consumption is one of the important evaluating indicators for walking robots. In this paper, the kinematics modeling of quadruped robot with trot gait was analyzed firstly. And then the dynamics modeling was analyzed, which considering periodic contact force between foots and ground during walking, and considering the elastic elements. Finally, the total energy consumption of walking robot during whole gait cycle was derived based on the dynamic model. The specific resistance was proposed to evaluate energy efficiency of quadruped robot with trot gait, and the relationship between specific resistance and gait parameters was presented, which will be used to analyze the energy efficiency and influencing factors, and then determine the reasonable gait parameters.
Architecture of Granary Monitoring System Based on Wireless Sensor Network
Authors: Geng Dao Qu , Fang Zhen
Published: December 2012

Many research projects are involved in environmental monitoring in recent years. However, most existing studies are interest in the outdoor natural environment monitoring. Few of them focus on the indoor monitoring. This paper presents a system based on wireless sensor network (WSN) for granary monitoring including grain temperature and grain moisture content monitoring. To our best knowledge, this is the first time to provide a system based on WSN, which can measure the grain moisture content on line. The overall system architecture is described in detail. Besides, the wireless communication protocol and the network deployment are introduced.
Automatic Send Tea Vehicle System
Authors: Wang Hong Jun , Wu Hao , Xue Yu
Published: December 2012

According to the mission to research an automatic send tea system. It's used to improve the actually problem of difficult take care of everyone that cause of large tea table and the large number of drink tea persons. In order to achieve automatic transmission tea, the auto-oriented mobile robot is designed to solve the above problems.
Experimental Research and Analysis of Mechanical Properties of Aluminum Alloy 6063 Adhesive Bonding
Authors: Wei Hui Ling , Gao Qun , Zong Zhi Jian
Published: December 2012

The different geometric sizes, different adhesive thickness and different surface treatments have great influence on the properties of aluminum alloy 6063 bonding joints. This paper takes single lap joint for object, adopts the tensile shear test, takes the tensile shear strength as the judgment basis, and exploresthe variation inperformance of aluminum alloy 6063 bondingjoints. The test results show that: Aluminum alloy 6063 bonding joints occur serrated yielding phenomenon inthe tensile shear test; In a certain layer thickness range, tensile shear strength of aluminum alloy 6063 bondingjoints correspondingly increaseswiththe thickness of samples increasing; Different surface treatments on aluminum alloy 6063 have a great influence on tensile-shear strength, and mechanical polishing and skim can significantly improve tensile shear strength of aluminum alloy 6063 bonding joints.
Kinematics Analysis for a PRRR Manipulator
Authors: Tian Fang , Liu Guang Ming , Tao Ke
Published: December 2012

The PRRR manipulator of the kinematic equation transformation matrix is worked out by using D-H method, the kinematics solutions are derived ；The coordinate transform method and inverse transform method of the robot kinematics equations are derived, the inverse kinematics is derived and a example is given.
One Equipment Maintenance Support Platform Based on Virtual Repair Technology
Authors: Lei Lei , Zhang Jian Hu , Liu Fu Li , Cui Xin You , Peng Wei
Published: December 2012

One equipment repair support training platform was designed and researched based on virtual repair technology. The successful application of the platform, reduce the equipment loss, save the training funds, is of model significance and reference value to develope equipment virtual repair. This paper introduce the platform design scheme and elaborate the key technology.
Research on Machining Knowledge Base for Numerical Control System
Authors: Xue Fei , Zhang Xiao Feng
Published: December 2012

According to the rapid and efficient requirement of numerical control machining process, a machining knowledge base is developed by building the parameterized models based on the Pro/Engineering three-dimensional design software, using the Visual C++. NET and Microsoft SQL Server software as knowledge base background server. Because of the renewable, large capacity, and three-dimensional model characteristics, the machining knowledge base has the ability of reducing tool stock and preserving optimized parameters, which greatly increase productivity and decrease manufacturing costs.
Research on the Magnetic Force of a Blood Pump Driven by Large Gap External Magnetic Field
Authors: Tang Xiao Yan , Yun Zhong , Xiang Chuang
Published: December 2012

The calculation model of the single turn rectangle current carrying coil was established. The theoretic formula for calculating the magnetic field intensity of any point in space was derived. For a pair of radial magnetizing permanent magnets, the formula for calculating the magnetic force of permanent magnet in the magnetic field was deduced based on the equivalent current theory of permanent magnet. According to the formula, the influencing factors and the changing rules for the magnetic force of permanent magnet can be seen directly: the current, the coil turns are proportional to its magnetic force, while the coupling distance is inversely proportional to its magnetic force.
Study on Controlling and Forecasting Noise Radiated from Engine
Authors: Chen Ke Liang , Xiong Yong Gang , Li Shun , Xia Tian Jun
Published: December 2012

A motorcycle engine shell is taken as the research object in the paper in order to reduce the noise radiation of motorcycle engine. The noise radiation of the engine shell is analyzed by the finite element method and boundary element method ( FEM / BEM ), and the frequency range of the noise radiation and the critical region are determined. Combining with sound intensity test, it is proved that the calculation result of the software is correct. According to the simulation results, the engine shell structure was optimized, and the noise radiation of the optimized model was predicted. Comparing the noise test before and after the model optimization, the results show that the optimized engine shell surface radiated noise is reduced about 4dB.
Target Tracking System Based on Inertial Stabilized Platform
Authors: Chen Ying , Xue Yuan Yuan , Zhang Xia Jiang , Tang Chao , Jiang Nan
Published: December 2012

A target tracking system based on inertial stabilized platform（ISP）is introduced, which can fulfill platform inertial navigation, platform stabilization and target tracking. An IMU is integrated with electro-optical sensors and a laser range finder on a gimbal, which performs attitude transformation by constructing navigation coordinates in a mathematic platform, and the platform inertial information is obtained by transformation matrix between platform and payload coordinates. The inertial platform comprising gyros, electro-optical sensors and servo mechanism is capable of stabilizing line of sight and can be used to track targets in the relevant field of view (FOV). The system can determine geography coordinates of the host platform and target only with inertial information and laser ranging data. The geo-tracking system always locked the target image at the center of FOV by calculating spatial geometry and adjusting LOS attitude. This tracking is different from TV tracking and geo-reference image tracking, which may be influenced by fog and obscurant. When the helicopter is flying over urban or mountain areas for rescue missions, it can avoid the loss of targets due to strong maneuver or LOS obscuration, and reduce the operation load of the aircrew and improve rescue efficiency.
Temperature Field Reconstruction System Based on Ultrasonic Time-of-Flight Technique
Authors: Zhang Hua Yu , Xu Ke Bao , Xie Feng Qin , Liu Ya
Published: December 2012

A temperature field related with ultrasonic propagation in the air according to the different velocity in different temperature can be reconstructed with the TOF (time of flight) measurement at different temperatures. One method of two-dimensional temperature field reconstruction has been proposed in this paper based on ultrasonic time-of-flight technique. The temperature of the total temperature field has been calculated with the method of 2-dimensional interpolation according to the temperature values measured with 8 ultrasonic sensors which has the functions of signal sending and receiving distributed around the measured field with given position. 4 thermocouples have been used to check the result of reconstruct temperature field in the experiment. The disturbance of temperature sensors distribution with the traditional ways has been avoided with little influence between the each sub-field divided by 8 temperature sensors with the given reconstruction in this paper.
Study on the Optimization of the Autolytic Conditions of Grifola frondosa Fermented Mycelium
Authors: Xu Ze Ping , Yang Chuan Lun , Zhang Xin Qing , Wang Xiu Zhi
Published: December 2012

This Liquid submerged fermentation method was applied to culture the Grifola frondosa mycelium and the effects of temperature, pH and inorganic salts on the autolysis of fresh Grifola frondosa mycelium were examined. The single-factor experiment and orthogonal design were used to optimize the autolytic conditions. The results showed that the optimal conditions for the mycelium autolysis were 50°C, pH5.0, 0.05% MgSO4 and 0.1% CaCO3. This research provides the basis for further investigation of the Grifola frondosa mycelium autolysis mechanism.
The Application Analysis of Five Degree of Freedom Manipulator in Crawl Dispensing Equipment
Authors: Ren Gong Chang , Wang Yong Fei , Ye Qing , Chen Bo
Published: December 2012

According to the actula situation of the current domestic traditional dispensing equipment in low automation and intelligent, we develope a program of putting a kind of five degree of freedom manipulator applied to cral dispensing equipment, and details of the developpment and application of the dispensing rotot, determining the mechanical structure, the method of driving and controlling. Practice has proved that the program can achieve the exact location of dispensing devices.
The Fault Diagnosis of Elevator Based on the Autoregressive Model and the Support Vector Machine
Authors: Xu Shan , Huang Yi Jian
Published: December 2012

The paper proposed the fault diagnosis of elevator based on the autoregressive(AR) model and the support vector machine. At first, build the AR model with the processing signals. The AR coefficient was used as the input of the support vector machine, the normal condition and the fault condition were used as output. By studying and predicting of the support vector machine(SVM) can reaching automatic identification. This method has high accuracy of diagnosis while resolved the problem of lacking samples.
The Dynamic Characteristics Research of Oil Source with Load of Rolling Mill
Authors: Chen Chun Ming , Feng Li Zhen , Jia Jin Miao , Wang Yang
Published: December 2012

Oil source made up of constant pressure variable displacement pump, accumulator, and pipeline is widely used to provide stable pressure for electro-hydraulic control system in practical engineering. The control system is non-linear and real-time, each part of which is interactive, a simulation model of energy source system is built, which includes constant pressure pump, accumulator and pipeline and load by means of AMESim software. Based on the simulation and experiment, the relationship between the load frequency variation and the pressure fluctuation of oil-source are obtained, the research provides support on how to confirm the equipment parameter properly, improve the stability of oil source system and enhance the control precision by reasonable confirming the equipment parameter.
Vehicle Kinematic State Estimation Using Passive Sensor Fusion Approach
Authors: Fong Li Wei , Lou Pi Ching , Tang Ke Jia
Published: December 2012

The main issue addressed here is that of estimating the kinematic state components of a vehicle in autonomous navigation using landmark angle-only measurements from an onboard passive sensor. The estimates of the absolute position and velocity of the vehicle are provided by a hybrid coordinate fusion filter. The hierarchical architecture of the filter which consists of a group of local processors and a global processor is developed for improving estimation accuracy. In each local processor, an extended Kalman filter uses hybrid information from the reference Cartesian coordinate system and the modified polar coordinate system for state and state error covariance extrapolation and updating. In the global processor, a weighted least squares estimator is utilized to combine the outputs of local processors to form a global estimate. By using only two landmarks simulation results show that proposed algorithm improves the estimation accuracy drastically.