bluuebunny/crossref_metadata_2025 huggingface dataset:
Study of Temperature Decoupling Fiber Acceleration Sensor Based on the Dual-FP Structure
Authors: Xie Hai He , Jiang Xiao Feng , Yan Huang Ping , Huang Yuan Qing
Published: October 2012

There is seriously temperature coupling affection in the traditional fiber acceleration sensor, which affects the measurement accuracy. In order to improve anti-interference ability of the sensor, the structural characteristics of the dual-FP cavity is adapted to realize temperature decoupling. Based on the double-beam interference theory, the optimal film thickness requirements, and the output spectrum change of FP cavity caused by the vibration and temperature change is analyzed. Acceleration sensor with structure of the dual-FP cavity and three-bridge is designed. The structure of sensor is analyzed by ANSYS software, such as the thickness of the bridges and the mass size of sensor, and cavity length change caused by equivalent force. Based on the analysis, it can be concluded that the corresponding bridge thickness is 100μm and mass diameter is 0.5mm for the sensor with external diameter of 2 mm and inner diameter of 1.6mm. The resonant frequency of the system is 6.6kHz, and measuring range is 0 ~ 10g.
Characteristics of the Lateral Shift at the Surface of the Metamaterial
Authors: Liu Bin , Shen Quan Yong , Ye Jian Mei , Xie Zi Qing , Xu Min Yan
Published: October 2012

In some metamaterial such as the chiral negative refraction medium, the lateral shift is analyzed in theory. When total internal reflection occurs, the lateral shift curves as the incident angle have been figured out for a linearly polarized incident wave. The shift directions of the TM and TE components in the reflected wave are opposite when the incident angle is between the two critical angles of the eigen-waves. Both TM and TE waves will have positive lateral shift once the incident angle is larger than the total internal reflection angle. By contrast with the common medium and normal chiral medium, we have found that the lateral shift character in the chiral negative refraction medium is distinctive.
Loop Transparency for Scalable Dynamic Symbolic Execution
Authors: Ji Xiao Li , Zhang Xiao Song , Chen Ting , Li Xiao Shan , Jiang Lei
Published: October 2012

Dynamic symbolic execution is a promising approach for software analyzing and testing. However, it fails to scale to large programs due to the exponential number of paths to be explored. This paper focus on tackling loop caused path explosion problems and proposes a new approach to reduce paths that produce the same effects. We present a loop transparency strategy that makes use of the decision graph of under test program to discard constraints that produce paths with only a different number of iterations. A dynamic software testing tool LTDse based on loop transparency is designed and evaluated on three benchmarks. The experimental results show that our approach is effective since it can achieve better code coverage or require fewer program executions than traditional strategies.
Isomorphism Identification of Planar Kinematic Chains Based on Characteristic Arrays and Computation
Authors: Shen Ye Qin , Wu Chuan Yu , Xu Shi Fu , Zhang Lei
Published: October 2012

At present, the research of isomorphism identification of planar kinematic chains has reached a great improvement, however, most of the methods are proved so complex, inefficient as well as unreliable that the research is hindered and restricted a lot. At the same time, especially with the appearance of the planar kinematic chains with multiple joints, there is less research about the methods. Hence, in the paper, based on the method of kinematic chains with characteristic arrays, one method of isomorphism identification of kinematic chains with single joint as well as multiple joints is proposed presently. What is more, a software based on this new method proposed is developed with Visual Basic. In the end of the paper, an example is analysed in detail with hand computation and this software, through which the method is proved simple, efficient as well as reliable.
Application of Virtual Assembly Technology in the Design of Shaper
Authors: Gu Feng , Zheng Xiao Hu
Published: October 2012

Using functions of the parametric design and assembling in Pro/E, the parametric model for parts of shaping machine was established and the virtual assembly of shaping machine was achieved according to the parts of the assembly relationship in Pro/E assembly environment. Using functions of gap analysis and interference check in Pro/E,it can check interference to find and amend parts structure of shaping machine and can analyse gap to find the assembly relationship of shaping machine. Through the motion simulation, it can simulate movement of various parts of shaping machine in virtual environment. Using the method of virtual assembly ,it can met the design requirement of shaping machine, reduce the design cost of shaping machine, shorten the product development cycle, improve the design efficiency. It has offered a kind of new design method and implementation way for research of the model.
Experimental Study of Cyclic Loading Behaviors of Reinforced Concrete Beams Strengthening with Externally Bonded Steel Frame
Authors: Pan Li Yun , Chen Cheng , Zhao Shun Bo , Li Chang Yong
Published: October 2012

Two large impaired reinforced concrete beams with pre-loading cracks were strengthened by the externally bonded steel frame composed with bottom steel plate and side hoop steel belts. The cyclic loading behaviors of these beams were tested to verify the effectiveness of this strengthening method specified in current Chinese design code. Based on the analyses of test results, the steel plate worked well with bonded concrete under normal service load, the hoop steel belts were necessary to prevent the peeling of bottom steel plate. The strengthened beams were effectively enhanced in flexural stiffness and ultimate resistance, and no new cracks appeared under the normal service load.
Coal Mine Mobile Refuge Chamber with Square Cross Section Structure Finite Element Analysis
Authors: Zhang An Ning , Gu Yu Ming , Tai Jin Jun , Yin Zhong Hui , Fan Xue Qun , Zhang Bin Hui
Published: October 2012

Coal mine mobile refuge chamber, as the important equipment of underground refuge system, has a close relation to the life safety of the miners. At present, there are a lot of production refuge Chamber manufacturers, but they do not enjoy a unified standard in shape or size. This paper focuses on the establishment of the KJYF96/10 mobile refuge chamber model by Solidworks and adopts the structural finite element analysis by Simulation, drawing a conclusion of refuge chamber stress and displacement cloud chart. It is expected to offer an effective reference to improving the structure strength and reducing design costs.
Optimization Design for Crushing Mechanism of Double Toggle Jaw Crusher
Authors: Luo Zhong Hua , Li She Huan
Published: October 2012

This paper conducts a comprehensive study on the optimization design for crushing mechanism of double toggle jaw crusher. The optimization aim is to reduce characteristic value of moving jaw plate, to raise capacity of jaw crusher, and to ensure entrance and outlet dimensions of jaw crusher. Firstly, formulae are derived for displacement of the topmost point and the bottommost point of moving jaw plate, and for the meshing angle between moving jaw plate and fixed jaw plate. Secondly, an optimization design model is established for the crushing mechanism. Finally, with C++ programming and half-penalty function method, an optimization design program is compiled for crushing mechanism of double toggle jaw crusher. Optimization is carried out for the crushing mechanism of PEJ900×1200 double toggle jaw crusher, and the optimization result is satisfactory. In the optimized crushing mechanism, the entrance and outlet dimensions and the maximum meshing angle and horizontal strokes of the topmost point and the bottommost point of moving jaw plate completely meet the design requirements. So, this paper makes it possible to raise the quality of double toggle jaw crusher.
The Cylindrical Air Spring Suspension Stability Model and Simulation
Authors: Wang Liang , Chen Chong , Yang De Jun , Hu Rong Rong
Published: October 2012

There is a close relationship between the stability of vehicle and the suspension. In this paper, an air spring suspension stability model is established by MATLAB/Simulink based on vehicle stability theories. This air spring suspension stability model is used to analyze the performance of air spring suspension and the stability of vehicle by the simulation of gyratory motion and linear motion, after that real vehicle tests is performed, the contrast between them will be used to judge the accuracy and effectiveness of the air spring suspension stability model. In this paper, some original data come from a sedan. The data of this paper has proved the vehicle installing the cylindrical air spring suspension, has a good stability performance.
Design of Online Handwritten Numeral Recognition System
Authors: Chen Yue Fen , Lin Jun Huan , Li Guo Ping
Published: October 2012

An effective online handwritten numeral recognition system is designed based on the Matlab GUI interface. The coordinate locations of the handwritten numerals are recorded, from which the stroke direction variations and the 2-dimensional distance between the starting point and ending point of the numeral are obtained as the features, which are encoded into 42 bits binary sequence, and then input to the Hopfield neural network. The associative memory function of the Hopfield neural network can implement the learning and recognition of the handwritten numeral. Testing results show that the designed system has high recognition rate and fast recognition speed.
A Study of a Miniature Modularized Electro-Hydraulic High-Frequency Flutter
Authors: Xing Tong , Fu Liang
Published: October 2012

In order to solve the problem that traditional flutters can’t reach the requirements of vibration-assisted machining (VAM), a miniature modularized electro-hydraulic high-frequency flutter was proposed, which can output large force in high frequency. The structure and working principle of the flutter were elaborated in this paper. The equations of the valve in this flutter can be obtained based on equations of tradition valves, which established the mathematical model of the flutter. The flutter output waveforms were analysed by MATLAB in different input frequencies. The simulation results show that the flutter amplitude reach the maximum value in resonant frequency.
Study on Surface Temperature Field Simulation and Parameters of EDG Honeycomb Ring Based on ABAQUS
Authors: Gao Ji , Liu Qing Yang , Ma Xiao Fang
Published: October 2012

Technology of EDG has been widely applied in aviation aerospace field recently. In the process of EDG honeycomb ring (GH536) which as the important part of aircraft engine, analysis software of ABAQUS is used to conduct the simulation analysis to temperature field, then obtained the distribution of temperature field with honeycomb ring. Through analysis and calculation meanwhile conducting a lot of simulation tests that repeatedly validated, simulation process by ABAQUS are accurate and rapidly, and it is also applied to optimize the craft of EDG other related thin-walled parts, at the same time it can be used to provide the theory basis of calculating precisely the thermal stress and residual stress in EDG processing.
Extraction of Weld Pool Width Feature Based on Visual Sensing during High-Power Fiber Laser Welding
Authors: Chen Zi Qin , Gao Xiang Dong
Published: October 2012

In a high-power fiber laser welding process, the thermal radiation of a weld pool contains plenty of information for welding quality, in which the pool width can reflect the welding stability. Thus, extracting the welding pool width of high-power fiber laser welding based on infrared thermal imaging is an important method for monitoring the weld seam quality. In this paper, we studied the 304 stainless steel welded by a 10kW high-power fiber laser continuously. A near-infrared high-speed sensing camera was used to capture the weld pool images. Image algorithms such as median filtering, gray scale stretching, cutting, dynamic threshold mathematical morphology were applied to extract the weld pool image edge, analyze and detect the weld pool width. Welding experimental results showed that the proposed methods could extract the weld pool width, which could reflect the stability status of high-power fiber laser welding process accurately.
Design and Simulation of Speed Sensorless Control System for Induction Motor
Authors: Wang Hong Yu , Peng Yan , Hou Yan
Published: October 2012

In this paper, a method for estimating induction motor’s rotor speed is proposed. The proposed rotor speed estimation method is based on model reference adaptive identification theory. By applying the proposed method, the induction motor control system can estimate the rotor speed of the induction motor precisely. To improve the rotor speed estimation performance of the system, one input filter and one output filter are introduced into the speed sensorless control system. The introduced input filter and output filter enhance the estimation accuracy and improve the reliability and robustness of the system. The speed sensorless control system based on proposed method was built with Simulink blocks in Matlab platform. The simulation results indicate that the proposed method can operate stably in whole range of speed with preferable identification precision of the rotor speed.
Evaluation of User-Based Collaborative Filtering Algorithms Using Regression
Authors: Zhang Yang , Zhou Guo Shun , Hua Shen
Published: October 2012

The explosive growth of world-wide-web and the emergence of e-commerce make the Collaborative Filtering (CF) algorithms widely used in recommender systems to identify a set of items that will be of interest for a certain user. However, with the rapid growth in the number of users and items, the quality of recommendation decreases. Improved CF algorithms are needed to provide a large number of users with the ability to efficiently obtain useful information. Different user-based approaches for computing similarities (e.g., correlation-based vs. adjusted-cosine) and different techniques for obtaining recommendations (e.g., weighted sum vs. regression model) are presented in the paper. The main steps of the algorithms are divided into two steps. The first is pre-computation of the similarities and pre-selecting of the N-nearest neighbors in the training phase, and the second is online prediction computation. All the algorithms require time linear in the number of items for online predicting. The experiments suggest that the user-based regression algorithms provide better qualities than those not using regression, and the average MAE drop is by 11.16%. Furthermore, the correlation-based regression gets the best MAE drop by 19.41%, and it provides better quality than the best available classic Pearson algorithms.
Aviation Ad Hoc Network Multipath Routing Protocol of Path Segmentation Based
Authors: Yu Geng , Wang Jin Tao , Qian Song Yan , Yang Tian Yu
Published: October 2012

Aviation ad hoc network has dynamic topology and uneven distribution of nodes, so it is difficult to establish node-disjoint multipath routes. Aviation ad hoc network multipath routing of path segmentation based build multipath routes between source node and the destination node in path segmentation. Each segmentation has one to three concurrent paths established by the topology of network, through which it leads to loading equilibrium. To ensure the accuracy of the data transmission of links with hop-by-hop verifying transmission mechanism and to reduce the cost of frequently routing update and end-to-end delay with routing fragment strategy. Finally, the routing protocol is simulated with the simulation software NS2 and the result shows that it has a good performance.
Regenerative Braking System Pressure Control Calculation Based on ABS Hydraulic Model
Authors: Chu Liang , Chen Jian , Yao Liang , Chen Chen , Cai Jian Wei
Published: October 2012

The main objective of this work is to present a methodology for development of regenerative braking system hydraulic model that can be used to estimate the master cylinder pressure, master cylinder travel position, normal open valve fluid flow, normal open valve cross-sectional area, normal close valve fluid flow, normal close valve cross-sectional area, accumulator fluid flow and brake caliper fluid flow. According to the above hydraulic model calculation, the cooperation between regenerative braking system generator and ABS hydraulic braking control will be smooth and the arbitration strategy can be designed. Through the simple hydraulic model, the entire brake circuit of ABS can be derived easily.
PLC Control System of the Stage Loader Based on Step Ladder Instruction
Authors: Chen Xu Qin , Cheng Guang Zhen
Published: October 2012

The purpose of this paper is to design an electric control system of stage loader which has clear logical relations and is easy to operate. The control system improved the working reliability of electric control system. Taking stage loader used in coal storage yard as an example, we introduce the mechanical structure and working principle of stage loader, mainly discuss about the components of electric control system, the action sequence of the actuator, electrical control PLC program .This paper pointes out that the use of step ladder instruction can make logical relations of action sequence clear and the use of state initialization instruction can make the state transitions among manual program, homing procedure, automatic continuous working procedure simple.
The Application and Parameter Optimization of Pascal Curve Gear in the Transplanting Mechanism
Authors: Fang Ming Hui
Published: October 2012

Applying the non-circular gear to transplanting mechanism can get more desirable planting work locus, which is a hot research topic recently. Pascal curve gear was obtained by researching features of Pascal curve in this paper, the non-circular gear planetary transplanting mechanism was designed using Pascal curve gear. Mathematical modeling of the various gears was carried out. Software for dynamic simulation and parameter optimization of non-circular gear transplanting mechanism was developed. Using the software, users input a set of parameters, and the software instantly calculates and shows the work locus and motion simulation, then users can judge whether the parameters are reasonable and get the appropriate planting work locus, validating that Pascal curve gear can be used in rice transplanter. Optimization parameters obtained from software are of guiding significance for the manufacture and testing of physical prototypes.
The Sensor-Circuit Design of Bunch and Water Facilities' Monitoring System
Authors: Wang Juan Ping
Published: October 2012

Monitoring signal of bunch and water facilities’monitoring system was from photoelectric sensors and pressure sensors, distribution and installation of photoelectric sensors into the seed tubes were analyzed after Choosing the photoelectric sensors, circuit were designed to amplify the output signals which were sended to the 8031 for processing, the sowing monitoring were realized. Circuit were designed after Choosing the pressure sensors to converse the signals A/D by the ADC0809 and send it to the 8031 for processing, water and fertilizer were monitored real-time, so the signals of the whole system were input.
Stability Analysis of the MRT-Based Compliant Polishing Tool System
Authors: Yuan Chong Yang , Zheng Di , Zhan Jian Ming , Hu Li Yong
Published: October 2012

In order to meet the needs for the precise polishing of free-form surfaces, a new compliant polishing tool system was designed based on a magnetorheological torque servo (MRT), and integrated into a CNC milling machine. Through analysis, it was pointed out that the key factor affecting the polishing quality of this system is the stability of the system. By means of the 3D geometric modeling software ProE, the finite element analysis software ANSYS, and the dynamic simulation software ADAMS, the rigid-flexible mixed model of the system was established and the stability of the polishing pressure and tool position was numerically analyzed.
Internal Wave Propagation from Pulsating Sources in a Two-Layer Fluid of Finite Depth
Authors: Manyanga David O. , Duan Wen Yang
Published: October 2012

The influence of internal waves is very important in the Engineering Analysis, Design and Optimization. To study the internal wave properties, we model a two-layer fluid and generalize to multiple layers. In a two-layer fluid with the upper layer having a free surface, there exist two modes of waves propagating due to the free surface and the interface. This is due to the density difference in the vertical direction of the water, due to the variation in salinity and temperature where waves from underwater structures are of importance. In this case the fluid is assumed to be non viscous, incompressible and the flow is non rotational. On the other hand, there is need for appropriate Green functions to analyze these properties. In this paper, we use the three dimensional Green functions for a stationary oscillating source to study the internal wave characteristics. Some of the behavior studied in this work includes effects of internal waves on the surface and internal wave amplitudes. Further, an investigation of the influence of internal waves on the wave length, frequency and period is made.
A New Type Design of Lighting Current Strength Detection Sensor
Authors: Wang Tie Liu , Leng Kui , Dong Yang , Feng Fei Xue
Published: October 2012

The lightning current parameters are very important for the lightning-line monitoring, they can provide important raw data for the construction of power grids and lightning protection engineering, conducive to the maintenance of high voltage transmission lines. But also provide the objective basis of the lightning accident analysis and statistics of lightning law. In this paper, we have Investigated parts of the complex and diverse terrain characteristics of Guizhou Province, we plan to design a simple, economic, effective data acquisition system for lightning current, timely and accurate grasp of the local lightning. we have done some research on the measurement mechanisms of lightning current strength. First, a novel lightning current strength detection program is proposed, and then we have done a lot of tests on the program and depicted the related parametric curve. Last, we verify the linearity of this sensor.
Load Tooth Contact Analysis for Double-Crowned Face Gear
Authors: Peng Xian Long , Fang Zong De , Jiang Jin Ke
Published: October 2012

In order to further reduce sensitivity to misalignments not only double crowned pinion but also profile and longitudinal geometry modified face gear have been studied. The profile geometry modification were realized by application of rack cutters, and applied parabolic motion of the center of grinding disk for the pinion and face gear longitudinal crowning. Tooth contact analysis (TAC) and Load Tooth contact analysis (LTCA) have been performed to simulate the meshing and contact of double-crowned face gear driver. The further avoidance of edge contact in presence of big magnitude misalignment was illustrated with numerical examples.
A Study of Temperature Measurement Technique of High Intensity Focusing Ultrasonic Therapy
Authors: Liu Li , Sun Jian
Published: October 2012

High intensity focused ultrasound (HIFU) is the fourth brand-new and efficient means to cure tumour acknowledged by the medical field. China is one of countries applying HIFU to clinical oncotherapy earliest in the world. However, a considerable part of HIFU equipments which have been put on the market leave unused because accidental injuries such as ambustion to the body surface, tumour tissue residues in the target section or damages to normal tissues are often caused in HIFU clinical treatment. In the thesis, temperature measurement technique of high-intensity focusing ultrasonic therapy is introduced; features and existing problems of two methods (ultrasound and MRI) which are usually used at home and abroad to guide and monitor HIFU treatment are focally analyzed and illustrated.
Based on Ant Colony Algorithm Simulation of Single Crystal Alloy Finite Element
Authors: Zhang Shu , Meng Lei
Published: October 2012

we have used the metaphor of ant colonies to define "the Ant system", a class of distributed algorithms for combinatorial optimization. In this paper we analyze some properties of Ant-cycle, the up to now best performing of the ant algorithms we have tested. We report many results regarding its performance when varying the values of control parameters and we compare it with some FEM algorithms. And in accordance with treatment principles, the microstructure of the alloy is simulated. First modal analyses of microstructure defects are performed in ANSYS. Second the genetic algorithm is implemented in MATLAB to Calculate the Value of b and p. The last, The FEM analysis results are imported in ANSYS about the Stress distribution. The result presented in this paper is obtained using the Genetic Algorithm Optimization Toolbox.
The Experimental Study on Modal Parameters Identification for Motorman-HP20 Robot
Authors: Zhang Gang , Huang Hai Bo , Zhang Ting
Published: October 2012

The dynamic characteristics of light-weighted structure are more important due to its flexible property. In this paper, the experiment of modal analysis for Motorman-HP20 robot is carried out. The method of one location for response and multi-locations for excitation are applied in the experiment. The orthogonal polynomials curve fitting method is used for modal parameters identification. The first six order modal parameters are obtained. The results show that the structure of L-shape arm may be re-designed due to the modal shapes due to severe vibration of L-shape arm in modal frequencies of some prior orders and the poor base frequency.
Simulation and Optimization of Flexible Hooke Hinge
Authors: Sun Wei
Published: October 2012

Flexible Flexible hinge is a typical flexible element in compliant mechanisms. Hooke hinge is a combination of the two revolute whose axis through the same point. It allows the two components have relative rotation of two degrees of freedom along the perpendicular axis. The distributed multi-reeds and large-deflection flexible Hooke hinge with the curve reed as the basic unit is analysed by finite element simulation, and is optimized in Multi-objective. The Hooke hinge after optimization lines with the basic rotation characteristics of Hooke hinge. It can provide the larger two-dimensional rotating schedule.It’s unilateral rotation angle can up to ±11.9 °, and the center drift and input coupling of rotation is small. So this flexible Hooke hinge is a new type of large deformation flexible Hook hinge which have excellent performance.
The Development and Application of Real-Time Monitoring and Forecasting System of Urban Air Quality
Authors: Hou Rui Lian
Published: October 2012

Underlying on the technologies of internet, network database and GIS, this paper presents the total solution of the development of the real-time monitoring and forecasting system model of urban air quality, which fulfils the requirements to low energy consumption and quick response and provides reference for similar project research.The paper systematically describes the system target,background of the development,running environment choice of the software, process of the development etc.Then it analyses function modules of the system.At last it gives the structures and implementation methods of the system’s database and the system security solution.This system not only can generate the state analysis reports and the early warning, but also can visualize the data analysing of the air quality by GIS.
Finite Element Analysis of Foundation Settlement of 220kV Transmission Tower with Independent Foundation
Authors: Li Bo , Jian Ming Jian , Zhang Du Qing , Zhang Guang Cheng
Published: October 2012

The uneven subsidence of the independent foundation of the transmission tower often happens in the coal mining area, which causes serious threat to the safe operation of transmission lines. In this paper, the finite element analysis is carried out for a certain 220kV tower-ling coupling system, and the effects of the different kinds of earth deformations on the structure responses are studied. The results show that the contribution of the vertical displacement of the foundation to the variations of the internal forces of the tower is quite small and the resultant stress does not exceed its critical value. However, in the same load conditions, when the distance of root span changed or asymmetry settlement is overexertion, the truss member stress of the cross braces exceeds the yield strength of the materials and occurs yield deformation.
Research on the Dynamic Characteristics of the Ice Cover Based on the Finite Element Method
Authors: Yang Kai Yun , Zhang Guang Yao , Zhang Duo Xin
Published: October 2012

This paper studies the dynamic characteristics of the rectangular ice cover and the related factors using the finite element method. First of all, the finite element model of the ice cover is set up according to the theory of displacement -pressure law which is used to solve the fluid-solid coupling problem, and the constraint conditions of the ice cover are simplified into two ways that are fixed constraint and space simply supported. Secondly it studies the relation between the modes of vibration and the constraints. Again this article analyzes the relation between the thickness of the ice cover and their frequencies. Finally the paper analyzes its natural frequency with different water depths under the action of the fluid-solid coupling.
Design of Braille Display System Based on Piezoelectric Actuator Array
Authors: Liang Xiao , Li Guo Ping , Xu Zhi Ming
Published: October 2012

According to the situation that conditional Braille book is difficulty in publication and its amount is small. This paper puts forward a tactile display system which can transform content of common e-book to Braille information, and the blind comprehend the text by touching the Braille formed by the tactile display device. This Braille tactile display system extracts Chinese characters by OCR technology. The text recognized is segmented into word blocks according to the rule of Braille word segmentation before transforming to double-phoneme mandarin Braille. It uses dsPIC30F2010 to receive Braille signal and then controls the piezoelectric actuator array to output corresponding displacement.
Structural Optimization Design of Flexible Anti-Collision Device for Bridge
Authors: Liu Jun , Yang Yong
Published: October 2012

Due to he complexity of the shipping collision process, the design of the protection device can not be accurately calculated by theoretical formula. Through the establishment of the anti-collision device in simplified model, this paper carries out the simulation analysis of the finite element values, and studies the key parameters that affects the performance of the anti-collision device: the geometric structure of inside and outside of steel, the combination of anti-collision circle (elastic element), the flexural rigidity of peripheral steel. And then we get the design parameters of the equivalent flexural rigidity of peripheral steel which is to ensure the that the peripheral steel won’t be partial collapse when there are some collision between some representative ships and it; and we also find that the appropriate increase in the flexural rigidity of around the vertex of the outer steel will improve the overall anti-collision ability of the anti-collision device.
Ballonet Polishing of Aspheric Part Based on MRF Torque Servo
Authors: Ying Xian Gen , Zheng Di , Hu Li Yong , Zhan Jian Ming
Published: October 2012

This paper proposed a new ballonet polishing method for the precise polishing of aspheric parts. The method is based on the integration of a MRT (Magnetorheological fluid Torque servo)-based ballonet polishing tool system and a CNC lathe. By using this method, the decoupling control of force-position-posture can be realized in polishing process. The structure and working principle of the polishing tool system were introduced. The material removal model for ballonet polishing was established according to Preston Equation. The main factors affecting the material removal were discussed, and the control model of uniform removal was put forward.
Feasibility Study on Forming Hollow Axle with Multi-Wedge Synchrostep by Cross Wedge Rolling
Authors: Sun Bao Sou , Zeng Xue Lei , Shu Xue Dao , Peng Wen Fei , Sun Pei
Published: October 2012

One direction of the cross wedge rolling technology is to realize high-efficiency, precise and near-net-shape forming hollow axle with multi-wedge synchrostep cross wedge rolling. This paper deduced the rotated condition of forming hollow shaft with multi-wedge cross wedge rolling (MCWR) base on forming solid shaft with single-wedge cross wedge rolling, and analyzed technics parameters on the influence of rotated conditions. Through the finite element simulation we got rolling technics parameters on the effect of rolled piece and selecting principle, and then created the 3D model of the equal diameter period of hollow axle with the MCWR. By using DEFORM-3D software, the process of rolling equal diameter period was simulated. The result indicated that it is feasible to roll hollow axle with multi-wedge synchrostep by cross wedge rolling.
Design of a Straightness Measurement Device for the Slider's Motion of the Press
Authors: Pan Xiao Bin , Pan Yang
Published: October 2012

A straightness measurement device for theqitade haishi FD slider’s motion of the press is presented. The design uses eddy current sensors, which will accomplish the measurement of straightness in un-contacted ways. MCU takes charge of data process. The straightness error can be calculated by the arithmetic of mean value. A straightness evaluation system is constructed as well. This device changes the traditional way of straightness measurement which is measured by the dial indicator. And it can improve the efficiency of straightness measuring task
Design and Experiment of Ultrasonic Cleaning for Crops
Authors: Zhang Xing Wang , Chiu Yi Jui , Yang Chia Hao
Published: October 2012

This paper aims to design an ultrasonic cleaning machine for crops to provide the engineers with very useful information. First, the new practical model is designed, including the body shell, cleaning tank, ultrasonic generator and control system. Second, three vegetables (lettuce, cabbage and potato) are used in the experiment. The result shows the damage percentage after washed was 0%. The root vegetables are cleaned faster in this machine.
Mechanism of Heat Transfer Enhancement due to Tandem Two Cylinders in Unsteady Flow
Authors: Zhang Hua , Xi Guan Nan
Published: October 2012

A two-dimensional numerical computation was carried out for two cylinders in tandem changing unsteady flow regime. Mechanisms of heat transfer enhancement due to tandem two cylinders in unsteady flow were discussed based on the obtained flow and thermal fields. The simulation result shows that the center distance of two cylinders is the main factor of heat transfer enhancement. It also shows that the wake of the upstream cylinder acts periodically the near wall of the downstream cylinder and the tip of vortices plays an important role on the leading edge of the downstream cylinder. Base on the numerical results, it is observed that there locally exists the dissimilarity between the momentum transfer and heat transfer, which was related to the hot or cold fluid.
Tribological Characteristics of Nickel-Aluminium Bronze CuAl10Ni5Fe4 against 30CrMnSiA Steel after the Prior Corrosion Treatment
Authors: Tan Zhi Hai , Guo Qiang , Zhai Wen Kai , Zhao Zheng Ping
Published: October 2012

The tribological characteristics of nickel-aluminium bronze CuAl10Ni5Fe4 against 30CrMnSiA steel after the prior corrosion treatment was studied at the M2000A model wear tester. The wear rate of corroded specimen was less than that of uncorroded specimen at the early stage of prior corrosion treatment, while the wear resistances deteriorated and the average friction coefficient slightly declined with the extension of prior corrosion period. The tests of CuAl10Ni5Fe4 sliding bearing at PLS-100 swing tribometer were used to validate the results. The wear resistances of CuAl10Ni5Fe4 sliding bearing increased slightly after a short period of prior corrosion, and the average friction coefficient decreased slightly after a long term of prior corrosion. A suitable period of prior corrosion treatment can enhance the wear resistance performance of CuAl10Ni5Fe4 bearing. The tribological characteristics of CuAl10Ni5Fe4 sliding bearing tested by PLS-100 rack swing tribometer are consistent with the conclusions of the tests at M2000A model wear tester.
Design of New Fixture for Standardized Cutter
Authors: Deng Ke , Huang Ning Hui
Published: October 2012

In view of present situation that fixture for standardized cutter can install only one specification of standardized cutter and center height of cutter blade must be calibrated by gaskets, a new-style multi-functional fixture was designed which can clamp various specifications of standardized cutters and be adjusted more precisely and easily by screws. The main design contents include general structure of fixture, installation space of cutter, harford vertical adjusting mechanism, cutter lateral fastening and screwdown column; lateral fastening force, screwdown clamping force and tighten torque of different specifications of cutters are calculated afterwards. It has been proven by practices that the new fixture has good effects and meets demand of production well.
Research on Evaluating Theory and Application to Design of Mechanism Scheme with Uncertain Linguistic Information
Authors: Wang Tie Jun , Hao Chang Zhong
Published: October 2012

The design of mechanism scheme is the primary phase and the creative and challenging part in product lifecycle. In this paper, we research the multiple attribute group decision making (MAGDM) problems for evaluating the design of mechanism scheme with uncertain linguistic variables. We employ the uncertain linguistic weighted harmonic mean (ULWHM) operator to aggregate the uncertain linguistic information corresponding to each alternative and get the overall value of the alternatives, then rank the alternatives and select the most desirable one(s) by using the formula of the degree of possibility for the comparison between two uncertain linguistic variables. Finally, a practical example for evaluating the design of mechanism scheme is used to illustrate the developed procedures.
The Study and Realization of Energy-Aware Routing Algorithm of Wireless Sensor Networks
Authors: Hu Hai Yan , Zhang You Qiao
Published: October 2012

Based on the analysis of routing algorithm of typical wireless sensor networks, the author puts forward with the objectives of routing algorithm and designs energy-aware routing algorithm to reduce energy consumption and extend life cycle of the whole network. The algorithm constitutes four modules: clustering module, dynamic cluster head election module, dormant state module and inter-cluster routing module. Aiming at effectively using the energy of sensor nodes, the paper makes use of honeycomb-like two-level clustering structure to increase coverage rate of nodes. Also, studies of routing are discussed on the two aspects, being the inter-clustering dynamic cluster head election and introduction of dormant mechanism, and secondly, the inter-clustering reliable routing.The routing algorithm has its prototype realized and effectively verified on the test bed provided by the laboratory.
Car Styling Perceptual Modeling Based on Fuzzy Rules
Authors: Wan Xin Ru , Che Jian Ming , Han Lu
Published: October 2012

Abstract. In today’s automotive market with intense competition, car styling preferences directly affect designer’s design outcome. At the meantime, there are various types of car styles, however users’ emotional evaluations of them are messy. Thus establishing a perceptual extraction model of vehicles is necessary. Under common circumstances, we quantify the emotional human perceptual through digitized human perceptual data obtained by questionnaires. However, it is emotional and thus difficult to analyze. In order to analyze perceptual data, the general method is statistical methods, such as factor analysis system. However, the use of statistical methods alone is not sufficient to handle the emotional data, because this method cannot handle non-linear intrinsic emotional data. This paper will discuss the using of fuzzy rules and through inductive data analysis to extract a common perceptual model of consumers’ emotional tendencies towards vehicles. In this paper, methods of variance predicted generalized regression neural network (VP-GRNN) and fuzzy adaptive resonance theory (fuzzy ART) were used to build a common perceptual model.
Bionic Design Elements in the Application of Modern Product Design
Authors: Wang Le Qiong
Published: October 2012

Bionic design is the study on the operation principle of natural biological system and the outstanding ability they have in the long process of evolution, then make it stereotyped and apply the principle to design and manufacture a new design. Its purpose is not copying each detail mechanically, but to analyze biological function and structure and understand the working principle of biological systems, and then apply it to the design of future. This article summarizes the application in modern product of bionic design according to form bionic, function bionic, structural material bionic these three aspects, analyze it combining with the example, summarize the characteristics of bionic design and the specific application method in modern product design.
Structure Optimization Design of Pneumatic-Hydraulic Supercharging Press of Lever Amplifier
Authors: Du Ji Tao
Published: October 2012

Aiming to the problems of the pneumatic-hydraulic supercharging press such as only supporting small force and forming micropart of sheet metal or nonmetal, the pneumatic-hydraulic supercharging press of Lever Amplifier was designed integrated pneumatic-hydraulic with lever mechanism, it can support 30 Ton force. Its working parameters were calculated, its machine frame structure was built in virtue of Solidworks, supporting plate of PHSP frame were analyzed and optimized by FEM CosmosWorks. The result shows that thickness of supporting plate with two holes is superior, it deflection is small, this structure is simple, reliable, operating safe and convenient, the most important item is to put forward to the new-type press machine for thickness metal sheet forming.
Discusses to Use the Chinese Traditional Color-Culture in the Innovation Design
Authors: Zhou Yue Xi , Yang Hong Yan
Published: October 2012

The Chinese traditional color-culture (CTCC) is not only an important classical of Chinese civilization, but also one cultural system lacking the modern scientific methods of management. Based on the sustainable development concept, this paper firstly analyzes the feasibility of introduction management methods in CTCC. Secondly, we discuss how to use the management principles to manage CTCC. Thirdly, we try to reform design education based on CTCC. Finally, use it to carry on widely confirms in the modern design practice. This research work can not only be used to improve the levels of training for the creative design talents, but also solve the problems of the misunderstanding and the friction between different nationalities due to no color-culture knowledge in the world cultural exchange and economic activities.
The Topology Optimization for L-Shape Arm of Motorman-HP20 Robot
Authors: Huang Hai Bo , Zhang Gang
Published: October 2012

In this paper, the L-shape arm of Motorman-HP20 robot is light-weighted. Multi-body dynamic model of the robot with flexible parts is built to get the mechanical behaviors in the most critical condition. Then the forces of both ends of L-shape arm are obtained and applied to the FE model. Then the topology optimization method is applied to the FE model. Refer to the topological structure, the refined structure is given due to experience. The results show that the weight and maximum displacement of the new structure are 5.2Kg and 0.066 mm respectively, which are less than those of the original design at the same condition in this paper.
Structural Optimization Design of Anti-Collision Sealing Cylindrical Rubber Cushion
Authors: Liu Jun , Sun Bao Shou , Cao Jian Nan
Published: October 2012

At present, it is inconvenient for use due to huge volume of common inflatable rubber fender. This paper introduces a design of cylindrical rubber sealing cushion which can be applied to various occasions to protect ships, dock and pier facilities. The key of air cushion technique is that it can produce a large displacement to buffer deformation and to reduce the exchange of energy. It plays a role to increase the time of collision, and then reduces the force of collision. Meanwhile, it also has good ability to adapt the tilted contact and it can float on the water surface, etc. This paper makes a feasibility analysis and strength calculation by doing theoretical calculation, and then making a force-test simulation by using ANSYS software, and do some structure optimal design according to the results of finite element analysis.
Behavioral Modeling with Node Matching Algorithm for Conceptual Design
Authors: Yang Wei Rong , Deng Yi Min
Published: October 2012

Computer-aided conceptual design of mechatronic products is becoming more and more important since it offers much convenience in design scheme retrieval and enhances the utilization of existing designs. One of the key technologies for computer-aided conceptual design is an efficient search algorithm for retrieving existing designs. As such, it’s necessary to find a feasible way to select the most suitable design out of a number of candidates for further development. By applying behavioral modeling method for representation of conceptual design, this paper proposes a node matching algorithm for searching behavioral model, together with a model similarity evaluation method. Based on these methods, a framework for computer-aided conceptual design is subsequently proposed. Finally, a case study is presented to illustrate the applicability of the proposed methodologies.
Segmentation of Molten Pool Infrared Images Using Morphology during High Power Disk Laser Welding
Authors: Zhang Yan Xi , Gao Xiang Dong
Published: October 2012

Configuration of a molten pool is related to the laser welding quality. Analyzing the configuration of a molten pool is important to monitor the laser welding process. This paper proposes a method of segmentation of a molten pool and its shadow during high power disk laser welding, consequently provides the groundwork for reconstruction of the molten pool and analysis of welding quality. Subsection linear stretching histogram equalization was applied to enhance the contrast of the original images firstly, and then edge detection was used to highlight the edges. After that we used the morphology filtering method to produce the segmentation mask, and then combined the mask with the original images to get the final segmentation results. Also, the proposed method was compared with other traditional methods. The experimental results showed that our method not only could give better segmentation results and process large quantities images automatically, but also overcame the less-segmentation problems of traditional methods.