bluuebunny/crossref_metadata_2025 huggingface dataset:
Phase Field Study of Concurrent Nucleation and Growth in a Diffusion-Controlled Solid-State Phase Transformation
Authors: Wang Gang , Zeng De Chang , Liu Zhong Wu
Published: March 2012

The concurrent nucleation and growth in a diffusion-controlled phase transformation is studied using the quantitative phase field method, and the transformation kinetics is obtained for a model alloy. The simulation results show that the simultaneous nucleation and growth of new phase can be described very well in the phase field model, and that the phase transformation is governed by the diffusion of solute atoms. The competition between nucleation and coarsening is also observed. The phase transformation kinetics is found to obey the JMAK equation.
Communication of Double-Robot Polishing System
Authors: Yu Miao , Ji Jing , Liu Hui Ping
Published: March 2012

This paper puts forward a C/S control model that is made up of the double--robot polishing system. Based on the double-robot system which is made up of two MT-Arm 6-DOF serial robots, the method of motion control and communication between two robots are introduced. In the end, the mutual communication can be accomplished by two robots and the robot position and status information can be transported with programming of the win socket.
Design of UART with CRC Check Based on FPGA
Authors: Tong Xiao Rong , Sheng Zhong Biao
Published: March 2012

In order to realize the accurate serial communication, a simple and practical scheme for URAT design and implementation was put forward based on the analysis of CRC generation algorithm. The reliability of serial communication can be improved by adding CRC into the asynchronous serial communication. The CRC checksum module is achieved with Verilog language on the basis of FPGA and obtained consistence between the results of simulation and theoretical analysis. Therefore, the expected design target was met, and the communication speed and efficiency was improved.
Dynamic Modeling and Motion Simulation of a Movable-Winged Underwater Glider
Authors: Song Bao Wei , Tian Wen Long , Mao Zhao Yong
Published: March 2012

Underwater gliders are a class of Autonomous Underwater Vehicles (AUVs) that offer many advantages over traditional AUVs. Previous research has mainly focused on underwater gliders with fixed wings. This paper studied a novel underwater glider whose wings can pitch independently about its installed shaft, called Movable-Winged Underwater Glider (MWUG). A 6-DOF model of dynamics for MWUG was developed based on Newton’s law and Euler’s equation, gravity, buoyancy, added mass forces and hydrodynamic forces considered. Longitudinal motion simulations were conducted to clarify the motion characteristics of MWUG. Results of the simulations indicated that compared to fix-winged gliders, MWUGs show a smaller glide angle and attack angle, higher glide speed and efficiency
Adaptive Subdivision Surface Reconstruction for Scattered Data in Reverse Engineering Based on GPU
Authors: Wang Ying Hui , Wu Wei Yong
Published: March 2012

Reconstructing geometry models from scattered data is an important task in reverse engineering. An adaptive subdivision surface reconstruction method was proposed to construct complex models rapidly. This method includes several steps: triangulation on scattered data; mesh segmentation and simplification; computing the subdivision depth according to the specified error. The last step is computing mesh control net by fitting subdivision functions and construct subdivision surface adaptively. In order to improve the efficiency of the algorithm, we implemented the reconstruction algorithm on GPU in parallel way and tested the program on several large scale data sets. Our adaptive subdivision method can save storage space and gain high efficiency simultaneously.
An Energy-Balance Based Distributed Topology Control Algorithm for Wireless Sensor Networks
Authors: Wang Chu Hang
Published: March 2012

Topology control is an efficient approach which can reduce energy consumption for wireless sensor networks, and the current algorithms mostly focus on reducing the nodes’ energy consumption by power adjusting, but pay little attention to balance energy consumption of the whole network, which results in premature death of many nodes. Thus, a distributed topology control algorithm based on path-loss and residual energy (PRTC) is designed in this paper. This algorithm not only maintains the least loss links between nodes but also balances the energy consumption of the network. The simulation results show that the topology constructed by PRTC can preserve network connectivity as well as extend the lifetime of the network and provide good performance of energy consumption.
A Novel Variable Step Size LMS Algorithm Based on Modified Hyperbolic Tangent and Its Simulation
Authors: Tian Fu Qing , Luo Rong
Published: March 2012

In the paper, a new variable step size LMS algorithm based on modified hyperbolic tangent is presented. In the algorithm, the step size is adjusted by the estimation of the autocorrelation between and .The algorithm introduces the compensation monomial to improve the convergence and the parameters to improve the shape and bottom characteristic of hyperbolic tangent. Therefore, the algorithm has faster convergence, better performance of noise suppression，lower steady state error and misadjustment. The theoretical analysis and simulation results all show that the overall performance of the new algorithm exceeds greatly some existent others under low SNR condition.
The Security Measures of FCS in Power Plant
Authors: Han Ka , Yuan Li Hong
Published: March 2012

As a new technology of control system, Field Control System (FCS) is being promoted in power plant in China. According to the application status and requirements of FCS in power plant, the author proposes some security measures and suggestions for FCS.
Robust Predictive Control for Uncertain Time-Delay Systems with Nonlinear Disturbance
Authors: Zhao Jia Cheng , Su Cheng Li , Li Ping
Published: March 2012

Based on predictive control principle of receding optimization, the infinite time domain “min-max” optimization problems are converted into convex programming problems by Lyapunov stable theory and linear matrix inequality (LMI). The sufficient conditions for the robust stability of the uncertain time-delay system are given. Finally, the simulation results illustrate the effectiveness of the proposed methods.
Study on Fractal Box Dimension and Its Application to Fault Diagnosis of Hydraulic Pump
Authors: Liu Xi Liang , Chen Gui Ming , Li Fang Xi
Published: March 2012

Fractal box dimension is a new method to represent self-similarity and complexity of non-stationary mechanical fault signal. In this paper, we first present the basic conception of fractal and box dimension. Then we propose the algorithm to calculate the box dimension of discrete signal. On the basis of wavelet packet decomposition, we quantitatively analyze the vibration signal under different conditions with fault characteristic by way of box dimension. Experimental results show that the box dimensions are different in evidence because of the difference of fault mechanism. As a successful application, fractal box dimension can be used to recognize the fault pattern of hydraulic pump effectively.
Stress Analysis of RC Column under the Isolator in the Base-Isolation System
Authors: Zhang Hua Ying , Pan Rui Song
Published: March 2012

Design of vertical bearing member under the isolation devices needs higher safety reliability in the base-isolation system, which is more important than the upper structure. A method of considering second-order moment caused by superstructure horizontal shift is put forward in this paper, so that to analysis the stress and strain in the FEM of cantilever column under the isolators. Analysis result of the FEM indicates that the method in this paper can effectively balance the decrease of stiffness, which is caused by the shift of superstructure on the isolators
Robust Stabilization for a Class of Switched Nonlinear Systems
Authors: Wu Cai Yun , Niu Ben
Published: March 2012

This paper addresses the stabilization problem for a class of switched nonlinear systems with Lipschitz nonlinearities using the multiple Lyapunov functions (MLFs) approach. A state feedback controller and a state dependent switching law are proposed to asymptotic stabilization the switched system via linear matrix inequalities (LMI). The developed control strategy ensures asymptotic stability of the closed-loop system even if the nonlinear part . Finally, the feasibility of the proposed method is illustrated through a simulation example
The Study on Automobile Electronic Key Systems using Numerical Analysis
Authors: Sun Xu Song
Published: March 2012

Paper was removed due to verbatim plagiarism. The original paper was published as follows: Sugahara, K.; Yamamoto, H..; Ouchi, H..; Nakano, Y.., "Numerical Analysis of Near-Field Magnetic Field for Automobile Electronic Key Systems," Magnetics, IEEE Transactions on , vol.43, no.8, pp.3375,3379, Aug. 2007 http://ieeexplore.ieee.org/xpls/icp.jsp?arnumber=4277913
The Analysis of Fiber Positioning System Temperature
Authors: Liu Xue Peng , Zhao Dong Mei
Published: March 2012

The LAMOST fiber positioning system is installed in focal panel. Thermal deformation influences focal panel and fiber positioning precision greatly. The heat transfer mathematical model of focal panel is established with the analysis of the focal panel structure. A single step motor heat under the normal work is detected. By using finite element analysis software Ansys the temperature distribution of the focal panel is calculated, which provides the basis for the next step calculation of the focal panel thermal deformation.
The Application of Improved Genetic Algorithm in Distribution Network Reconfiguration
Authors: Zhou Wen Hua , Chen Xiao Long
Published: March 2012

This paper presents an improved algorithm for distribution network reconfiguration. The objectives is to minimized the power loss and the percentage of over-voltage. Based on the traditional genetic algorithm, the adaptable function selection and the disposal of terminating evolution criteria has been improved, to improve the convergence of the system and the calculation accuracy. At the same time, using a new estimation method to correct the load curve. This approach takes full advantage of existing distribution network's original data, it can significantly reduce the computation time, its accuracy to meet the requirements of engineering practice. Test results have been presented along with the discussion of the algorithm.
Analysis of Directional Accuracy of Three Single Arrays
Authors: Fang Li Qing , Wang Hong Kai , Chen Kai
Published: March 2012

Acoustic sensoxr array technology is the one of the key technology of passive acoustic detection technology, whether the single array has a good performance on direction will directly affect the accuracy of the locating system. In order to choose the best single array on direction, in this paper, respectively selected representative plane array and spatial array from a number of typical single arrays to analyze, find out the advantages and disadvantages of two single arrays. On this basis, around the idea of integrating the advantage of symmetric spatial array and plane cross five-element array, according to characteristics of the structure of this two kinds of arrays to design a new locating model—spatial five-element array. And compared with two kinds of single array mentioned above, the results of comparison show that the locating accuracy of spatial five-elements array is superior to both kinds of mentioned, and have high engineering value.
A Trinocular Stereo-Matching Algorithm Based on Adaptive Support-Weight for Mobile Service Robot
Authors: Huang Wu Xin
Published: March 2012

A trinocular stereo-matching algorithm based on adaptive support-weight and disparity adjustment has been proposed to improve the accuracy of trinocular vision. Adaptive support-weight which is an efficient window selection method in binocular stereo is applied in the trinocular stereo. A robust target image selection method is also proposed for using the information of different target images in trinocular stereo-vision system efficiently. So occlusion can be handled well by this means. The vision system is tested in the project Family Life Support Multi-Robot Systems.
A Circuit to Realize the Repetitive Operation of Underwater Corona Discharge in the Application of Water Treatment
Authors: Chen Dan , Zeng Xin Wu , Wang Yi Bo , Zhang Jun
Published: March 2012

Underwater corona discharge is a swift, efficient and low-cost method for water treatment. To achieve above advantages, underwater corona discharge systems usually work in the repetitive mode. In this paper, a simple charge-discharge circuit for the typical driven capacitor (10nF/100KV) is proposed, which makes the system be capable to work at a repetition rate of 50Hz. The working mechanism of this circuit is introduced, and its electric behavior is simulated by pSpice. Based on the simulation results, the rules of choosing the electric parameters for this circuit are discussed.
The Design of Interference Generator for Grid Based on 89S52
Authors: Li Xiao Zhen , Jiang Yuan
Published: March 2012

The minimum microcontroller system is adopted in this paper to produce sine wave, achieve key control, and realize frequency display and measurement, which enable the circuit to automatically change and measure the filter output frequency. In the system 4011 chip and external RC circuit adjust pulse width and the number of bursts, Two-stage second-order active band-pass filter is used to filter out interfering signals so to get the fundamental signals. The 89s52 microcontroller programming regulate the signal frequency and amplitude which is realized through keyboards and shown on LED
Research on Deviation Correction Control Technique of the Paver’s Traveling System
Authors: Wang Dong Qing , Mao En Rong , Yin Xiu Jie
Published: March 2012

In order to improve the performance of crawler paver’s traveling and reduce the paver’s straight traveling deviation, a new control plan of paver’s traveling system was proposed. In the control plan, the left wheel control method adopted velocity closed loop control in order to keep constant-speed moving of the paver. The right wheel control method adopted the series structure of fuzzy control and PID control in which the fuzzy controller slightly adjusted the right wheel set point of PID controller according to the distance difference variable and velocity difference variable of paver’s left wheel and right wheel. In the working condition of straight paving, the real time deviation correction is achieved to assure paver’s straight traveling.
Task Assigned Algorithmic for Multi-UCAV Based on Auction Mechanism
Authors: Zhou Xiao Cheng , Deng Li , Yan Jian Gang
Published: March 2012

Under the uncertain battle environment, the key to completing battle task of UCAV is that whether the dynamic task could be assigned in real-time and effective method. Dynamic task assigned arithmetic of UCAV is put forward based on auction mechanism principle in this paper. Arithmetic flow is shown, benefit calculation function is constructed and algorithmic efficiency is analyzed in this paper. Simulation experiments indicate that this algorithmic reduces more calculating quantity and has better real time character compared with traditional method.
Sonar Image Registration Based on Improved PSO and Powell Hybrid Algorithm
Authors: Wang Da , Bian Hong Yu
Published: March 2012

In order to further improve the accuracy of the sonar image registration, a novel hybrid algorithm was proposed. It proposed the normalized mutual information as similar estimation, drawn on multi-resolution data structure based on wavelet transform, a low precision solution was solved by improved PSO algorithm, which has strong global search capability, firstly and then a high precision solution was acquired by Powell method, which has strong local search capability. The hybrid algorithm is effective to overcome the fall of local maximum mutual information function; it also improves solution’s precision. Since the hybrid algorithm is the initial point of pre-treatment, an effective solution to the Powell method dependence on the initial point. Experiments reveal that the hybrid algorithm is efficiency and effectiveness.
Application of TSP Tunnel Geological Prediction for Case Study
Authors: Dai Shu Lin , Ma Chao Fang
Published: March 2012

Tunnel geological prediction is of great significance for the prediction of rock and instructing the tunnel constrution. By means of specifying the main principle of the tunnel geological prediction and introducting engineering project, the effectiveness of TSP geological prediction system in the application of tunnel geological prediction is analyzed and demonstrated, revealing the broad application prospects of this system in tunnel construction. This paper introduced the system of measuring point layout and data collection methods, pointing out the feasible method to improve the veracity of prediction results, and a few suggestions are given to tunnel construction, providing a guarantee for ensuring the safety of construction.
Research on Dynamic of Wall Loading of the Discharge Chamber under Electro-Hydraulic Breakdown in Liquid
Authors: Hu Xiao Yang , Yao Jun
Published: March 2012

The underwater hydraulic discharge chamber is basic tools and method of research for many ocean issues. In this paper analyzed physical process and mechanical state of hydraulic discharge chamber, into account plasma, streamer and cavitation. The results of simulation and calculation compared with empirical data. On based the results analyzed the factors of effect of the underwater state and put forward improvement conditions of structural design for discharge chamber.
Design and Realization of FIR Digital Filter Based on MATLAB
Authors: Ren Shan , Zhao Xin , Zhang Wen Bin
Published: March 2012

Digital filter is one of the most important parts of digital signal processing. This paper proposes the method of using window function to design FIR filter based on MATLAB, according to the design basic principle of FIR digital filter. Filtering processing for measured signal showed that filtering effect of the filter achieved the expected results.
A New Method of Screw Extrusion Molding Pressure
Authors: Gao Yuan Lou , Bai Ren Hua , Zheng Jian Li
Published: March 2012

This paper research on the screw extrusion technology，using a new method for improving the quality of explosive，combined with the Principle of quasi-isostatic molding technology，by loading pressure at the extrusion outlet. By simulating the process that the explosive forming in the mould ，test whether the new method meets the basic conditions of quasi-isostatic molding technology，compare advantages and disadvantages under technical specifications with traditional screw extrusion technology. Results showed that new method not only conforms to quasi-isostatic pressing conditions，but also can improve the quality of medicines compared with traditional method.
A Portable Digital Torsional Vibration Analysis System and its Signal Processing
Authors: Lin Qi , Yu Shui Liang
Published: March 2012

Shaft torsional vibration is critical to rotating machinery as internal combustion engines because it may cause disasters if we ignore its significance. This paper introduced a portable digital system we developed to derive torsional vibration signal by a Hall Effect transducer. By analyzing the signal in frequency domain, we furthered the study on the influence of torsional vibration in each order under various rotation rates to determine the torsional resonant frequency. Moreover, a comparison between several signal processing methods in frequency domain was investigated and an optimum method for the spectrum correction obtained subsequently. Experiments conducted by this portable digital system showed its good performance in shaft torsional vibration measurements, analysis and trouble diagnosis.
An Indirect Measurement of the Slender Magnet Remanence with a Optical-Pumping Magnetometer
Authors: Yang Zhen Yu , Lin Chun Sheng , Yu Jie
Published: March 2012

In order to improve and purify the magnetic environment within vectors, a measurement of the slender magnet remanence was studied. Approximate calculation method was used for changing the calculation of the magnetic, from vector operations into scalar ones. And then an indirect measurement formula of optical-pumping was obtained. The measurement experiments of four cylindrical magnet romance showed that the method was simple, effective and high-precision.
A Study on Time Synchronization Algorithm Based on Energy Effective Strategy
Authors: Dai Ya Wen , Yan Long Hua , Chen Zi Peng
Published: March 2012

With advantages and improvements of HRTS algorithm and DMTS algorithm, a time synchronization algorithm based on energy effective strategy and available to multi-hop network is introduced in this paper. With guarantee of synchronization accuracy, the algorithm prolongs lifetime of WSN. Experiment in Zigbee network indicates that triple-hop synchronization error is less than 15 milliseconds.
Analysis of the Greenway Construction in Western Countries
Authors: Sun Kui Li , Lv Yang
Published: March 2012

Greenway construction theory originates in western countries. At first, more emphasis was attached on the landscape function, which is the combination of artificial landscape and natural landscape. As the theory and practice develop, the green way construction is on its way to sophistication and maturity. Nowadays, it has become an essential way to improve the urban ecological environment and the urban life quality. This essay mainly reviews the origin of the greenway construction in foreign countries, the definition, phase classification, planning issues and functions etc and takes the experience of western countries as reference, hoping to shed some light on the theoretical innovation and practice of greenway construction in China.
Control and Simulation Research on Interactive Oscillation of Operating Power of Diesel Generator Sets in Parallel
Authors: Yan Li Wei , Wang Xiao Jie
Published: March 2012

For some old diesel generator sets, interactive power oscillation often occurs in the parallel operation, owing to interference of oil supply. Through the analysis on the generator rotor equation, the paper first determines the cause of power change, and then uses control methods to eliminate the power interact oscillations based on actual conditions, and finally uses Matlab simulation to verify effectiveness of control methods
Automatic Dredging Robot for Metallurgical Drainage Trench Based on Virtual Design Technology
Authors: Wang Feng
Published: March 2012

The artificial dredging method is now used for the closed-type drainage trench of Tangshan Iron and Steel Co. Ltd., with low operation efficiency and large labor intensity. A new kind of dredging robot was presented in order to completely replace the human to clean the trench automatically. It is mainly composed of the crawler type walking mechanism, dredging chain bucket, silt conveying belt, and silt conveying carriage. Due to the adoption of the operating mode of mechanized dredging and mechanized conveying, the robot can enable the workers to get rid of the bad working environment thoroughly and overcome the various problems resulting from the artificial method. The 3D solid modeling and virtual assembly were conducted and the stability was analyzed by the use of Pro/E. It has been proved that under the condition of full load, the robot can implement the dredging operation stably and efficiently, which means that the design of the robot is feasible and effective.
Finding Principal Axes of Complex Plane Rigid Body with Rending-Image of MATLAB
Authors: Li Wu Gang
Published: March 2012

In order to find the principal axes of inertia and calculate their moment of inertia to any plane homogeneous rigid body for calculating easily the moment of inertia to any axis of this rigid body, the principal axes could be found and their moment of inertia could be calculated automatically by using the reading-image of MATLAB to read the image messages about the flat surface of the rigid body and by the procedures which ware made according to the logic relation about the principal axis and the moment of inertia of the rigid body. Applying this method in a homogeneous cube, a result was acquired, error of which is small compared with the theoretical value. So this method is reliable, convenient and practical
Expression of “Vivid Inner Temperament” in the Contemporary Environmental Design
Authors: She Xing , Pu Yi , Zhang Le
Published: March 2012

Currently, environment design tends to be more diversification; inheriting essence of national culture and improve the taste of architecture and environment has been become inevitable of development of era. Build " Vivid inner temperament" is one of principles of creation in the ancient Chinese art, now it should become one of the important methods of environmental design
Intelligent Optimization of Green Logistics System for Agricultural Products Based on the Database Resource Mining
Authors: Zhang Hong , Shao Chang Bo
Published: March 2012

The computer data mining technology can carry out an in-depth selection and processing on the potential data information. This new type of data mining technology has the ability to bring the values of all kinds of the information resources into full play. The sales of the agricultural products are the main source of the agricultural economic income. However, the agricultural products, during the period of entering in the market sales, are necessary to face up with all kinds of the logistics and distribution problems. From the perspective of the market value of the agricultural products, it is necessary for the enterprises to create the matching logistics systems and then meet the needs of the product sales. In accordance with this point of view, the author mainly carries out an analysis on the problems in the agricultural products logistics system based on the database resource mining in this paper.
Force Analysis Methods and Experimental Research on Double-Curved Arch Bridge
Authors: Zhang Yun , Zhou Xiao Rong , Li Bei , Yan Liu Bin
Published: March 2012

Research on section conversion of main arch ring and computation theory of lateral distribution in double-curved arch bridge. Through analyzing load experimental data of ShuiWen bridge, it demonstrates that the plane system finite element method is simple and practical compared to three-dimensional physical model in double-curved arch bridge computation, and the accuracy meets the design requirement .To double-curved arch bridge with spandrel arch, it can put loads distribute averagely on main arch ring to compute, the result is security without regard to joint action of above arch structure
Numerical Analysis of Thermal Response of UHTCs under Aerodynamic Heating
Authors: Liu Miao Qun , Lv Hong Qing , Wang Zhen Qing
Published: March 2012

Based on the theory and semi-empirical formulas, the surface heating flux of hypersonic flying vehicle under aerodynamic heating is calculated by using reference enthalpy method. On this basis, the thermal response of structure made of ultrahigh temperature ceramics(UHTCs) is simulated by using finite-element method. The results show that thermal stress shock is able to cause material to damage in a very short time
Experimental Study on Torsional Vibration of Dual Mass Flywheel
Authors: Chen De Min , Xu Jin Hao , Shi Xiao Fei , Ma Yue Yin
Published: March 2012

To verify the damping effect of dual mass flywheel, the experiment is designed in use of power-transmission test-bed and rev-torque testing apparatus, and dual mass flywheel of DCT transmission system DQ250 is used to test its damping effect in the experiment. Kinds of conditions of car, like idle condition, run condition, climb condition, are simulated in experiment. The results show that different engine revs and loads, different damping effects of dual mass flywheel. The high engine rev and the more load, the better damping effect of dual mass flywheel.
Performance Analysis of Bionic Propulsion Device above Water in Different Parameters
Authors: Bai Xiang Hua , Tao Feng He , Lv Jian Gang
Published: March 2012

This paper mainly researched on hydrodynamics performance of a wheel-blade bionic propulsion device designed based on the mechanism of a basilisk lizard treading water, when immerged in water and in different angles. Applied FLUENT software to gain the figures on lift force, propulsion, pressure nephogram and volume fraction distributing of bionic propulsion device when θ is at 100o, 125o and 140o, discussed and analyzed the rules of hydrodynamics when θ was altering, established the groundwork of optimizing the design of the bionic propulsion device further.
Optimal Design Method of Fins in Automotive Oil Cooler Based on the Thermal-Hydraulic Performances
Authors: Xiao Bao Lan , Wu Wei Ming , Yu Xiao Li , Lu Guo Dong
Published: March 2012

The excellent thermal-hydraulic performances of oil cooler are the strong guaranty for automotives’ normal operation. In this study, the thermal-hydraulic performances of compact oil cooler units with different fin size parameters are numerical simulated. According to simulation results, combined with neural networks method, the optimal fin size parameters are determined. Based on this, the effects of different fin arrange layouts on performances are also studied, and optimal layouts for different requirements for flow resistance and heat transfer performances are put forward. This optimal design method can play a guidance role for the designer and manufacturer of heat exchangers.
Design of the Digital Phase Meter with GPIB Interface Based on FPGA
Authors: He Hong , Qi Ya Nan , Zhang Zhi Hong , Yu Bao Sheng
Published: March 2012

Comparing with the traditional phase meter, the design of digital phase meter with GPIB interface based on FPGA have some advantages, such as the high date transmission rate, the simple circuit, short design cycle and the lower price. The principle of this design meets with the standard of IEEE488.2 and use Verilog HDL language to design every interface. Then compile simulate it in Quartus II. Finally download it to the FPGA experiment board to realize every function. It makes the date transmission more stable and reliable through the design of GPIB interface
Research on Ergonomic Design of Fascia Based on QFD and TRIZ Theory
Authors: You Qiang , Liu De Xin
Published: March 2012

Ergonomic design plays an important role in the design of fascia. It has a significant impact on the driving comfort and safety. To make this element in the design of fascia implement effectively, this paper presents a theory based on QFD and TRIZ. Firstly, the ergonomic requirements needed in fascia design are collected and converted into product features using QFD theory. And then the negative correlations which exist between these features are selected and solved basing on the TRIZ theory. Finally a new concept will come into being and reflect in the design.
Design of Wireless Sensor Network Nodes of Thermal Pipeline Based on Zigbee
Authors: Xu Gong Wen , Zhang Zhi Jun , Ma Hong Wei , Yang Lei
Published: March 2012

To avoid the explosion of thermal pipeline and control the flow, pressure and temperature of thermal pipeline, the wireless sensor network (WSN) nodes should be designed and arranged. A new information monitoring system is developed baded on ZigBee. Based on MPLAB® ICD 2, with three sensors, using low-power PIC18F4620 controller chip and CC2420 processor integrated ZigBee technology, the WSN nodes were designed. The data collected by sensors can be sent to management center by wireless network. Manager can control the thermal flow consulting by the message from sensors and find out thermal pipeline danger in time. The system realizes real-time monitoring on the thermal pipeline. The test result showes that the perfomance of the system is stable and can reach the design requirements.
Experimental Study of Effect Factors on Performance of Heat Dissipation of HP Heat Exchanger for LED Cooling System
Authors: Gou Yun Jun , Liu Zhong Liang , Wang Chun Min , Zhong Xiao Hui
Published: March 2012

A new cooling concept for high power LED street lamp by combining the heat release of high power LED with two-phase heat transfer heat pipes was proposed, and in this paper we study the effect of heat pipe numbers, fins structure and ambient temperature on the performance of heat dissipation of HP heat exchanger. Through experimental results, we found the heat pipes number plays a more importent role on the performance of heat dissipation than the fins material and the final surface temperature will increase with the environmental temperature.
Optimal Design of High Power LED Driving Circuit
Authors: Zhong Jiu Ming , Liu Han Jun
Published: March 2012

The loss of high power LED is analyzed and calculated. It is pointed out that high power LED driving circuit is required to be designed in detail instead of using BCD to 7-segment decoder. An example with 5 inch LED is presented. Some decoder circuits are designed and compared showing that the MC1413 is the optimal one. Example circuits are designed. The experiment results are in positive to the analysis results showing the feasibility of the proposed methods.
Smart Home Energy Saving Switch Controller
Authors: Lu Jian Qiang , Zou Xiang Jun , Sun Dao Zong
Published: March 2012

With advances in technology, intelligent energy saving control technology in the life and production are widely used. The system control module by the MCU, LCD display module, real-time clock module, the keyboard module, infrared receiver module, Darlington driver module and relay switch modules, sockets can not solve the traditional switch and remote control automatic operation, allowing families to use power safer, more energy efficient.
Talk about Structural Design of High-Rise Buildings
Authors: Zhu Xu Ping , Li Ju Wen
Published: March 2012

with the fast development of Chinese economy, the number of high-rise buildings has climbed rapidly and created major impacts consequently. In consideration of this, it is necessary to discuss the structural design of high-rise buildings as an important issue. In this article, the author analyzes the basic characteristics and main steps of high-rise building's structural design, and elaborates his own understanding of type selection and seismic design thereof. As high-rise buildings in China are increased at geometric rate, their types and functions have become increasingly complicated, and their structural system more diversified. In this process of fast growth, any omission or mistake is very likely to make the entire design more complicated or unsafe. Therefore, structural design of high-rise buildings is a lasting and complicated process, and also the focus and difficulty in architect's design. The author will hereby elaborate his thoughts on the structural design of high-rise buildings.
The Study on Low-Carbon Building Technology Using Natural Air Conditions
Authors: Zhao Zhi Wen , Luo Rong Fen , Li Shun
Published: March 2012

The basic requirements for low-carbon building are the natural life such as natural light, ventilation, climbing the stairs and so on. For example, well-designed natural ventilation needs no energy and cleaner than the mechanical ventilation, so the natural ventilation has a much better effect. The space organization should prevent the people to fall into the depraved life of higher energy consumption. Actually, saving water and electricity in life provide the better effect than the expensive saving water and electricity system. This kind of building need no complex pipe laying and much cost of maintenance and management after it is used.
Strength Analysis of Pressure Vessel with Big Openings
Authors: Huang Yan Li , Wang Shi Jie , Ru Hai Peng , Zhao Bing Ji
Published: March 2012

Due to the special process requirements, sometimes the big openings are needed for pressure vessels, which will form a complex stress state in the opening edge. But there is not a perfect design specification accepted by international for the pressure vessels with big openings, therefore detailed stress analysis and strength assessment are absolutely necessary. In this paper, in order to ensure that the structure of a pressure vessel with big openings which is calculated by pressure area method is correct, the finite element method has been used to perform strength analysis. Force characteristics and stress distribution are obtained. The intensity evaluation result shows that the structure is correct.
Optimal Design for Broadband Dynamic Damper
Authors: Ai Yan Ting , Tian Jing , Fu Qi , Zhang Feng Ling
Published: March 2012

This paper presents a new optimal design method based on genetic algorithm（GA）for broadband linear dynamic absorber. A New definition of the suppression bandwidth is described firstly. Then the method and procedure to optimize multi-parameters of broadband dynamic absorber is proposed. Effects of the natural frequency ratio, excitation frequency ratio, mass ratio, main system damping ratio and absorber ratio on the suppression bandwidth are discussed systematically. Finally the merits of genetic algorithm used for broadband linear dynamic absorber design are illustrated by contrasting it to a numerical method.
The Finite Element Analysis of Piston under Thermal Load Based on UG/ANSYS
Authors: Wen Li Zhi , Guan Zhi Wei , Liu Chen Fu , Zhang Xi Tong
Published: March 2012

The method to analysis the strength of planetary trains’ carriers of EPB(earth pressure balance) shield machine is presented in this paper. The structure of the shield machine trains is analyzed and the 3-D solid model of the carrier is built with Pro/E. After the load on the carrier has been dealt with, the strength of carrier is calculated by means of finite element method. The results via ANSYS show that the max stress and strain on the carriers are increasing as the increasing load on it. The max stress is lying on the joint point of the carrier and planetary gear shaft because of the bending deformation of the shaft
Study of Process Flow and Layout of Broiler Production
Authors: Xu Heng Qin , Wu Jin Zhuo , Wang Ze Li
Published: March 2012

The current status of broiler production in one of the subsidiary companies in Heilongjiang Chia Tai Group was investigated. Based on the summarization and analysis on its production flow and production layout, some layout symbols were put forward. These symbols can bring more convenience if used together with production flow chart in the planning and design of production logistics.
Research on Punching and Hot-Pressing Process and Related Mechanism for Easy Tear Lid
Authors: Tang Jing Jing , Wu Wei Zhong , Dong Hai Xiang
Published: March 2012

In traditional processing technology for easy tear lid, punching and hot-pressing are separated. They are finished by different mechanisms. There are some producing problems because of separated processing stages. In order to solve the problems, an innovated processing technology and the related mechanism for easy tear lid's forming are proposed in this paper. The new processing technology combines punching with hot-pressing; it can raise the rate of production. The related mechanism not only assures the accuracy of the lid’s forming, but also simplifies the structure of forming machine, making overall arrangement of machine become more reasonable.
The Application of Water-Cooling Pipes in the Mass Concrete of Hu Lu Shan Wan Crossing Sea Bridge
Authors: Zheng Yi Feng , Zhao Qun
Published: March 2012

Based on the Hu Lu Shan Wan crossing sea bridge, this paper calculated the temperature inside and outside the mass concrete while pouring. Besides, this paper presents the process of calculating and designing of the water-cooling method which could decrease the inside temperatrue of the mass concrete in the aspect of design principle. Thereby, it could solve the crack of concrete from one facet
Design of Numerical Control Machine on Human-Centered Design and Man-Machine Engineering
Authors: Wu Xiao Li , Yao Yue Yang , Xue Cheng Qi
Published: March 2012

This paper analyzed the current China market of numerical control machine, discovering that there was seldom consideration about Ergonomic, and also lacked the necessary experiment with study. This paper mainly analyzed Ergonomic about numerical control machine, and for project design example of numerical control machine to analyze its importance of Ergonomic in numerical control machine design. This project is going to considering more about the coordination between human and machine, joining the humanized design into the numerical control machine, letting the person also feel the concern of the design in work.
The Track Structural Design and Finite Element Analysis of the Track Type Thinning Shredder
Authors: Wu Yan , Ma Yan
Published: March 2012

Using the powerful parametric features of Pro/E modeling for the assembly of the track board, and building up Three-dimensional solid modeling. Finite element analysis with the simulation of mechanical motion to simulate the track through the soft ground of the forest were carried out. It can significantly reduce the design costs and speed up the development cycle to adapt of the requirements of the modern forestry industry.
Research on Technology of Responding for Multi-Specification and Small-Batch Mechanical Production Quotation Based on Feedback Amendment
Authors: Li Tian , Xu Chun Wei
Published: March 2012

Concerning the properties of multi-specification and small-batch mechanical production, the relationship between the cost of instance module and the initial quotation of requirement product is analysed. The quotation rule mapping between the quotation formula and the request-characteristic variable as well as the product module is obtained based on the feedback amendatory coefficient, and the quotation method based on feedback amendment for multi-specification and small-batch mechanical production is realized. This method is adopted in the quotation of electrostatic precipitator and is confirmed to be effective.
Comprehensive Optimum Design of Working Device of Loader Based on Sensitivity
Authors: Wu Xiao Ming , Xiao Gui Xiang , Chen Rong
Published: March 2012

The optimization design process of working device of wheel loader is a multipurpose and multivariable. In this paper, the virtual prototype model of working device is established and detailed sensitivity analysis had taken for various purposes to the design variables. Then based on the sensitivity results, three schemes of design variables were presented and through iterative optimization with ADAMS, the lifting stability and other performances of wheel loader are improvement
Envelope Analysis Based on the Combination of Morlet Wavelet and Kurtogram
Authors: Liang Yu , Guo Yu , Wu Chuan Hui , Gao Yan
Published: March 2012

Envelope analysis based on the combination of complex Morlet wavelet and Kurtogram have advantages of automatic calculation of the center frequency and bandwidth of required band-pass filter. However, there are some drawbacks in the traditional algorithm, which include that the filter bandwidth is not -3dB bandwidth and the analysis frequency band covered by the filter-banks are inconsistent at different levels. A new algorithm is introduced in this paper. Through it, both optimal center frequency and bandwidth of band-pass filter in the envelop analysis can be obtained adaptively. Meanwhile, it ensures that the filters in the filter-banks are overlapped at the point of -3dB bandwidth and the consistency of frequency band that the filter-banks covered.
Dynamic Performance of the Steel Tube Filled with Steel-Reinforced Concrete Finite Element Analysis
Authors: Liu Xiao , Li Min
Published: March 2012

In order to analyze the dynamic performance of the steel tube filled with steel-reinforced concrete under dynamic loading, the paper based on finite element approximation and inverse power of the iterative algorithm, used FORTUNE language to establish the structural dynamic analysis program. Calculated the critical loads and natural period of vibration and other data of the steel tube filled with steel-reinforced concrete column, and through curve analysis, obtained the rules of the stability of steel and seismic performance on the column from the influence parameter of slenderness ratio , steel ratio , concrete strength and etc. The results show that the slenderness ratio impacts greater than other parameters, so it must be strictly controlled within a certain range; meantime, the results also prove that improving steel ratio and reduce the strength of the concrete is not significant on the earthquake action
Discuss on Green Shipbuilding Technology: Design and Material
Authors: Xu Hua Li , Wang Hua , Xu Hui , Kou Xiong , Li Cheng , Yan Hong Sheng , Du Zun Feng , Xu Wan Hai
Published: March 2012

Shipbuilding includes three very distinct industrial operations, which are manufacturing, shipping, and ship recycling and will get out very serious pollution to the environment. This article discusses the green shipbuilding way to minimize the impact that shipbuilding have on the environment over their life-cycle, which include ship green design and harmless material chosen. And then several operations of green shipbuilding were present.
Low Temperature Synthesis of Nano-Carbon Materials Using a Water-Soluble Catalyst Support by Chemical Vapor Deposition
Authors: Chen Lei Shan , Wang Cun Jing
Published: March 2012

Nano-carbon materials were synthesized by catalytic decomposition of acetylene at low temperature 400 °C and 420 °C using iron supported on sodium chloride as catalyst. The samples were examined by X-ray diffraction, scanning electron microscopy and high resolution transmission electron microscopy. The results show that nano onion-like fullerenes encapsulating Fe cores with diameters in the range 20-50 nm were obtained when the reaction temperature was 400 °C and there were no carbon nanotubes in the product. These onion-like fullerenes are composed of concentric graphene layers with an interlayer distance of 0.348 nm between the layers. When the reaction temperature was 420 °C, carbon nanotubes with a structure of rope and low graphitization degree were obtained.
Phase-Field Simulation of Interface Effect during Grain Nucleation
Authors: Huo Fei , Zhao Ji Wei
Published: March 2012

In this paper, a phase field model based on Ginzburg-Landau theory is used to analyze the topological phenomena during grain growth. The simulation results show that two topological transformations exist during the grain growth—Neighbor Switching and Grain Annihilation; and we have found different kinds of topological events during the disappearance of a grain: direct vanishing of trilateral grain and pentagonal grain, as well as neighbor switching，which are right with classical topological theory and Euler formula. The simulation results are similar with experiments.
Preparation of Tin - Titanium Alloy in Powder Metallurgy Method
Authors: Zhang Han Liang , Tang Hui Ping , Li Zeng Feng , Xiang Chang Shu
Published: March 2012

Tin - Titanium alloy has been prepared by powder metallurgy method. By the way of preparing pre-alloyed metal and fully fine to ultra fine powder, optimizing sintering techniques, the Problem of enrichment of titanium from the alloy has been solved, the Tin - Titanium alloy with its homogeneous distribution elements has been made. Then the Tin-titanium strap has been processed successfully. In this paper, the key process to make Ti -Titanium alloy by Powder Metallurgy Method is introduced. The factors which affect the uniform components of the alloy have been mainly analyzed, such as ultra fine powder of pre-alloyed metal, diffusing sinter at lower temperature .etc. The results indicate that powder metallurgy with ultra fine powder additive and diffusing sinter at lower temperature is the efficient method to solve titanium element in the alloy segregate.