bluuebunny/crossref_metadata_2025 huggingface dataset:
Navigation Condition Effect on Ship Motion in some Sea State
Authors: Zhang Jie , Qu Kai , Zhang Xu Dong
Published: March 2012

According to analyzing the identity of ocean wave, theory of wave energy spectrum was applied to compute the curve of wave elevation vs. time in some sea state. Based on ship motion equations, ship motion was acquired by the simulation software of the of ship strip theory in some situation. How different navigation conditions effect on ship motion is researched in some sea state. The results show the change of degree of abaft the beam badly influenced the amplitude and periods of pitch, it also influenced periods of heave and amplitude of roll. The change of ship speed influenced the amplitude and periods of pitch, it also influenced periods of heave and roll.
Simulation Research on SUV Passenger Car Rear End Impact
Authors: Wang Xi Ting , Zhao Yi Feng , Li Xue Jiao
Published: March 2012

The simulation model of some SUV passenger vehicle rear end impact is created in the paper aimed at the furnished vehicle CAD model of some SUV passenger vehicle, using the principle of finite element analysis; according to the relevant test regulations on vehicle rear-end impact. The motion characteristics of rear-end impact, the effect of overall energy absorption, absorption and buffer characteristics of main components, safety of fuel tank and ride safety of crew are analyzed and discussed deeply. The characteristics of collision and the degree of accordance with the safety regulations on vehicle rear-end impact of the vehicle are comprehensively revealed. Moreover, some improved suggestions is proposed, the basis for promoting the rear-end impact safety of similar model is discussed.
Computation and Analysis of Frost Formation on Ground Aircraft
Authors: Wang Li Wen , Xu Dan Dan
Published: March 2012

Aircraft ground icing can result in decreasing the stability of the aircraft at or shortly after take off.. A theoretical model for frost formation by water vapor on aircraft in atmospheric air has been presented in this study. Frost surface temperature and frost thickness can be obtained by the model. Effects of aircraft surface temperatures and air conditions, such as aircraft surface temperature, air temperature and air velocity on the frost surface temperature and frost thickness can be evaluated by using this model. It revealed that the surface temperature increases with the surface temperature, the air speed and air temperature. The frost thickness increases with the air speed and the air temperature, decrease with the surface temperature.
An Improved Generalized Predictive Control for AUV Yaw
Authors: Tang Zhi Jie , He Qing Bo , Wang Shu Ai , Shen Jia Li
Published: March 2012

In this paper, a new design for underwater vehicle yaw control is presented for nonlinear, large delay, time-varying systems. The horizontal stability controller combines generalized predictive control with FuzzyPID control method. The predictive function is introduced into the tradition FuzzyPID control through optimizing the performance index function of GPC. Computer simulation is provided for verification, and the results show this new controller has a better performance
The Application of Double Closed-Loop Unit Gain Negative Feedback and BP Neural Network Controller in Single Inverted Pendulum
Authors: Wang Jun Ting , Liu Guo Ping , Jin Wei , Xiao Gen Fu
Published: March 2012

In the paper the mathematical model of the single inverted pendulum is established, on the base of the root locus and the control tasks the control system is made up of double closed-loop unit gain negative feedback and BP neural network controller. The results show that the inverted pendulum is efficiently controlled.
The Study on Oil Pollution Environmental Treatment Based on Micro-Biological Degradation
Authors: Wang Hui Ping
Published: March 2012

All the strains screened out from contaminated soils were capable of degrading diesel oil while consortium and strains Q18 had stronger degradation efficiency. It’s found that the existence of alfalfa and mustard could promote the degradation of diesel oil significantly. The existence of plant and the growth of roots may have changed the soil environment to make it more suitable for the growth of strains and degradation. In addition, the number of strains in the mustard rhizosphere was larger than that in the alfalfa rhizosphere, which showed that mustard had stronger ability on the activation of strain. This may be related to the different growth characteristics of mustard and alfalfa. In the experiment, Rhodococcus Q18-Indian mustard complex had the highest rate of degradation of diesel oil.
Study on Regenerative Braking Control Strategy for EV Based on the Vehicle Braking Mechanics
Authors: Li Guan Feng , Wang Hong Xia
Published: March 2012

In order to improve the recovery of braking energy in electric vehicles, a braking force distribution control strategy is proposed which the braking force proportion of the front and rear wheels are distributed according to the brake strength, by analyzing the vehicle braking mechanics and related braking regulation, and combining with the motor output characteristics. A simulation is carried out with SIMULINK/ADVISOR, the results show that, comparing with ADVISOR braking force distribution control strategy, the control strategy not only meets braking stability well，but also there are obvious advantages in energy consumption per 100 kilometers，the rate of braking energy recovery and utilization.
The Study on Oral Cancer Detection Based on 3-D OCT Image
Authors: Xuan Yong Hua , Li Chun , Cao Guo Qing , Zhang Ying
Published: March 2012

We have successfully demonstrated the use of 2-D and 3-D OCT for early detection and diagnosis of oral premalignancy and malignancy. Our results demonstrate the feasibility of diagnostic imaging within the oral cavity using this modality. Noninvasive evaluation of neoplasia-related epithelial and subepithelial changes throughout carcinogenesis in the hamster cheek pouch model was achieved. OCT can clearly distinguish many histologic features such as epithelial and subepithelial change. 3-D images provide detailed structural information at any location, and may be viewed at any angle desired by the clinician. The appearance of structures imaged by OCT corresponded closely to histologic images. Given the ability to obtain high resolution images, flexible fiberoptic bronchoscopic compatibility, and in vivo noninvasive measurement, OCT has the potential to be- come a powerful method for early oral cancer detection.
Study of Grating Signal Processing Based on FPGA
Authors: Zhu Yi Feng , Yang Xu , Shi Lei , Li Yan Fu
Published: March 2012

With the development of modern measurement and control technology,the grating sensor is widely used in the measurement of displacement and angle in precise meterage domain. Limited by the grating scratching technology,the way to improve the measurement precision of grating sensor is using electronic technique to subdivision the grating signal. This paper mainly research on raster displacement detection system based on FPGA. As the usual raster sensor data collection system has many problem,A new raster sensor data collection system was found based on FPGA &USB. In this system,FPGA was used as main controller , and the USB was used for data transmission. A whole system hardware circuit design was given in this paper, including the FPGA processing of the raster sensor signal, and the USB circuit design
The Research of Input Ground Motion on Seismic Fragility Analysis of Bridges
Authors: Zhang Yun , Tan Pin , Zhou Xiao Rong
Published: March 2012

Analyzed the importance of selecting reasonably ground motion input in seismic fragility analysis of the bridge. Based on the common methods of synthesis artificial seismic wave which used trigonometric series and according to the characters of Fourier series, extracted phase spectrum from practical seismic waves ,through modulating the Fourier amplitude spectrum, obtained the artificial seismic wave which fitted compatible with the design response spectrum. Similar to nature small earthquake records, it has the character of non-stationary on time-domain and frequency-domain. Synthesize a series of artificial seismic waves in this method, can improve the accuracy and pertinence of the bridge seismic fragility.
Study on Clutch Control Strategy of Dry DCT Launching
Authors: Sun Wei , Yang Yong Li , Liu Guo Qiang
Published: March 2012

The working principle of Dry DCT was introduced. The clutch control strategy of dry DCT launching was described, and corresponding experiments were made to search the best way to control clutch.
Research on the Lane Detection Algorithm Based on Zoning Hough Transformation
Authors: Fan Chao , Hou Li Long , Di Shuai , Xu Jing Bo
Published: March 2012

In order to improve the adaptability of the lane detection algorithm under complex conditions such as damaged lane lines, covered shadow, insufficient light, the rainy day etc. Lane detection algorithm based on Zoning Hough Transform is proposed in this paper. The road images are processed by the improved ±45° Sobel operators and the two-dimension Otsu algorithm. To eliminate the interference of ambient noise, highlight the dominant position of the lane, the Zoning Hough Transform is used, which can obtain the parameters and identify the lane accurately. The experiment results show the lane detection method can extract the lane marking parameters accurately even for which are badly broken, and covered by shadow or rainwater completely, and the algorithm has good robustness.
A Meshfree Weak-Strong-Form Method for Magnetohydrodynamic Flow in a Pipe
Authors: Cai Xing Hui , Shi Cheng Ying , Xu Peng , Zhu Man Lin , Wang Guo Liang
Published: March 2012

In this paper, a meshfree weak-strong form method is presented to compute the fully developed magnetohydrodynmic flow in a pipe. The radial basis function point interpolation approximation is adopted to construct the shape functions. For the nodes whose local quadrature domain is intersect with the natural boundaries, a local weak form of radial point interpolation method is applied. Otherwise, a strong form of meshfree point collocation method is employed. Numerical simulations are carried out for fully developed magnetohydrodynmic flow in a rectangular pipe with arbitrary electrical conductivity.
An Approach to Interior Ecological Design Concepts
Authors: Liu Xiao , Wang Bing
Published: March 2012

Interior ecological design attaches great importance to the comfort and beauty in living environment, emphasizes to save the resource and protect the environment, advocates the resource-saving and recycling. The existing state of the interior ecological design in China is analyzed firstly in this paper, followed by the discussion of the whole design principle on interior ecological design, as well as the analysis on the changes of interior environment brought by the natural elements, which briefly explains the importance of the interior ecological design. The main idea and primary elements of interior ecological theory is to advocate the comfort and beauty as well as resource-saving and environment-protecting. From the angle of sustainable development, the author appeals that architecture, while benefiting the contemporaries, should leave a comfortable living space and promote sustainable development for the offspring
Analysis of Hydraulic Regenerative Braking System for Electric Vehicle
Authors: Ning Xiao Bing , Xu Yao Ting , Wang Qiu Cheng , Chen Jue Jiang
Published: March 2012

In order to increase the regenerative braking energy recovery and the dynamic performance of vehicle start and acceleration in the stage of brake, the hydraulic braking energy recovery system was used with the storage battery braking energy recovery system after comparing kinds of regenerative braking recovery plan and energy storage method. The system was used to do simulation and analysis in vehicle dynamic performance and energy recovery efficiency under the PID control and ECE-15 cycle. The system simulation and analysis results show that using hydraulic regenerative braking system in pure electric vehicle can significantly improve the ability of vehicle’s start-acceleration and the increase in vehicle driving range of around 28%.
Analysis of the Existent Problem and the Policy Suggestions for Chinese New Energy Industry
Authors: Liu Miao
Published: March 2012

After the Financial Crisis, to stave off recession, the United States, the European Union enacted and promulgated a series of policies, those developed countries not only put forward the development of new energy industry as avery important national economic strategy but also make the relevant laws and regulations and policies to ensure a favorable environment for new energy industry. In such a new situation, our country is vigorously promoting the development of new energy sources. But we also meet some problems in the process of develop. This paper discuss the issues regarding the policies and capital bottleneck that appears on the development of new energy industry, calls upon the Government to implement relevant policies of new energy industry as soon as possible and make effort to support the industry development
A Discrete Particle Swarm Optimization Approach to Optimize the Assembly Sequence of Mechanical Product
Authors: Zhang Zhong Bo , Huang Chuan Yong
Published: March 2012

The aim of assembly sequence planning (ASP) is to achieve the best assembly sequence which assembly cost and time used is less. The geometrical feasibility of an assembly sequence is validated by the interference matrix of the product. The number of assembly tool changes and the number of assembly operation type changes are considered in the fitness function. To establish the mapping relation between ASP and particle swarm optimization (PSO) approach, some definitions of position, velocity and operator of particles are proposed. The difference of the proposed discrete PSO (DPSO) algorithm with the other algorithm is the emphasis on the geometrical feasibility of the assembly sequence. The geometrical feasibility is verified at the first and the every iteration. The performance and feasibility of the proposed algorithm is verified via a simplified engine assembly case.
Bifurcation Characteristics of Unbalanced Rotor - Bearing System
Authors: Xiang Ling , Wang Zi Rui , Tang Gui Ji
Published: March 2012

Dynamic model of nonlinear rotor—bearing system is set up using the modified Capone bearing forces models. And the nonlinear dynamics behavior of unbalanced rotor—bearing systems was studied. The system state trajectories, Poincare maps, are also constructed to analyze the typical dynamic behavior of the system．Through the nonlinear dynamic numerical simulation of the system，the dynamic phenomena of the rotor—bearing system caused by oil film forces are clearly distinct. The computational results show that the rotor speed is one of the most important factors of the system dynamic behavior. It presents a periodic, period-doubling motion, quasi-periodic motion, and abundant nonlinear dynamical behavior with the changes of the speed.
Based on the Condition of the Equipment Management
Authors: Wu Bing Jian , Zhu Hui Tian , Wang Yuan
Published: March 2012

With the edge of the application and key technologies, the management ideas that are the integration of equipment development and production stage of technology status management put forward and combed this project, providing comprehensive data management environment, providing rapid decision-making, timely information and scientific basis
Design of a High-Speed Reconfigurable Serial Fieldbus with Reliable Communication Based on FPGA
Authors: Zhao Xue Jin , Liu Zhu Qing , Hu Tian Liang , Zhang Cheng Rui
Published: March 2012

This paper present a high-speed reconfigurable serial fieldbus (HRSFB) used for industry communication with baud rate up to 10Mbps and reliable communication. We developed this fieldbus based on UART (Universal Asynchronous Receiver/Transmitter) and practice it on FPGA. By using hardware programming on FPGA, we can get the high speed and make the bus reconfigurable easily. This fieldbus system includes one main node and up to 255 sub nodes, and all the nodes can automatically identified and configured at the beginning of the system which makes the field bus system shrink or expand easily. Also hardware CRC technology and ask/answer mode are used in the communication protocol to guarantee the security of the communication. This bus has been widely used in many fields, like PLC controller, CNC machine controller, data acquisition system and so on.
Based on the Matlab Simulation of the Maxwell Distribution
Authors: Yin Xue Ying
Published: March 2012

Using MATLAB，the digital teaching software of Maxwell ’s speed distribution function is compiled. The software can deal with Maxwell speed distribution function in digital. This paper concerns mainly about the simulation of the speed distribution graph of the Maxwell speed distribution law and the speed distribution graph in different temperatures by using MATLAB Moreover, the three statistics is programmed and calculated
Design and Research of Double-Drum Winch for Lowering Mooring Anchor Chains
Authors: Yu Kai An , Ding Kun , Chen Ying Hua
Published: March 2012

The designed double-drum winch is applied to the development of Liwan 3-1 gas field of the South China Sea for lowering mooring anchor chains, which is composed of motor, brake, reducer, front and rear drums, two-stage gear transmission devices, rack and base. There is an intermediate axle between two drums of the winch. On the intermediate axle there are two gears, a large one and a small one. The large gear installed on the intermediate axle goes into mesh with the pinion gear installed on the output shaft of reducer, and the small gear installed on intermediate axle meshes with the large gears installed on the front and rear drums separately. The speed of rotate from the motor is sent to the two-stage gear transmission devices by the reducer, to realize two drums rotate simultaneously in the same direction. Compared to the double-drum winch of multi-motor synchronous drive, the designed double-drum winch can be more reliable and avoid the difficult technical problems of multi-motor synchronous drive and control in a large extent.
Based on Vector Control of All-Electric Injection Molding Machine Control System Design
Authors: Li Ming Hui , Li Zheng Qi
Published: March 2012

According to the all-electric injection molding machine control system requirements, the vector control applied to the permanent magnet synchronous motor control, we propose a fully electric injection molding machine control system design, through analysis and research that can further improve the program precise all-electric injection molding machine control, its stability, high reliability, to better meet the all-electric injection molding machine of precision and stability requirements.
Application of Extendable Optimal Degree Method in Evaluation of the Gun Maintenance Process Quality
Authors: Tao Feng He , Wang Shu Ai , Bai Xiang Hua
Published: March 2012

The gun maintenance quality includes the maintenance process quality and the quality after maintenance, which is determined and guaranteed by the maintenance process. Based on the situation, the gun maintenance process was divided into six key maintenance working procedures, cleaning, inspection, disassembly, repair, assembly, adjustment and correction. From the perspective of 5M1E, the evaluation index system of the gun maintenance process quality was proposed. Then, the evaluation model of the gun maintenance process quality was established based on extendable optimal degree method. Finally, an example was given.
Effect of Parameters on Strength of Composites Single-Lap Adhesive Joints
Authors: Yang Yin Huan
Published: March 2012

Based on popular and maturate application of the finite element analysis method, a numerical study is presented for effect of parameters, that are composed of lap length, adhesive thickness and ply styles of adherend, on maximum peel/shear stress of T700/EXOPY composite single-lap adhesive joints in this paper. Finite element simulations are carried out to analyze the peel/shear stress fields along the interfaces between the adhesive and the adherends. The simulation results show that the joint maximum peel/shear stress decreases with increasing the lap length, and peel stress of the joint of adherends of ply style [0/90/±45/0]S is much less, and the maximum shear stress in the interfaces between the adhesive layer and the adherends do not dcreases all the times with increasing the adhesive thickness. Good agreements between the present simulations and the experimental results are found.
Energy Saving Analysis of Solar-Powered LED Street Lighting Systems
Authors: Zang Li Lin , Li Shuo , Tian Da Jun
Published: March 2012

The light emitting diode (LED) street lighting systems based on solar photovoltaic technology have been used for some time. In this paper, we present an analysis aiming at assessing the feasibility and economic performance of a solar-powered street lighting system for a 1km road. The present study introduces the architecture of a classical solar-powered LED street lighting system and estimates the total investment cost for a 1 km highway with 2 lanes. The cost comparison of solar-powered LED lighting and sodium lamps using grid was carried out. The calculations show that the energy saving effect of solar-powered LED lighting systems is obvious but the initial investment of solar-powered LED systems is more than sodium lighting systems using grid. The investment cycle is about 2.2 years under the current conditions.
Analysis on Draghead Teeth of Drag Suction Hopper Dredgers Based on the Theory of Fuzzy Reliability
Authors: Liu Chun Qing , Chen Jing Feng
Published: March 2012

Drag suction hopper dredger is dredg the hard compacted soil,dreghead teeth intensity will lead to an undersized cutting depth and a large cutting resistance, it raise failure probability. In this paper, investigate the relation between dredging depth，width,resistance and draghead teeth reliability influenced under different conditions,including various teeth,loads,navigating speeds and high-pressure jets.Discussed their effects on cutting depth,width and resistance.At last this paper obtain the reliability index and failure probability of the draghead teeth through the calculation numerical example.In this example,the method improvements efficiency for Draghead Teeth based on analysis on reliability.
Kinematic Analysis of a Planar Mechanism Driven by Two Orthogonal Layout Actuators
Authors: Zhu Xiao Rong , Lu Yi , Shen Hui Ping
Published: March 2012

In this paper, a planar five-bar mechanism driven by two orthogonal layout actuators is proposed. The inverse and forward kinematics can be described in closed form. The Jacobi matrix, singularity and workspace of the mechanism are investigated. In addition, charts of some performance indices, such as dexterity, velocity, payload capability and stiffness index, are plotted. The results show that the mechanism has a flatter singularity-free workspace, which is usually our research object. On the other hand, Dexterity, Payload capability and stiffness index of the mechanism are basically the same distribution on the workspace, which are axis symmetric. But, the trend of velocity index is opposite. The proposed mechanism can be applied to the field of machine tools or used as the mobile base for a spatial manipulator. The results of the paper are very useful for the design and application of the new mechanism
Research of Technology of Virtual Building and Scene Roaming by Visual Basic
Authors: Zhang Man Yu , Zhao Wei Min
Published: March 2012

Recently, the computer technology, especially computer graphics, networks, multimedia, three dimensional simulation developments, injected virtual reality technology with new vitality, which also give 3D virtual scene a direction. The article mainly discusses technology of virtual building scenery, application in today's independent virtual building scene’s deficiency, and the integration of 3D virtual reality, locality and perspective advantages.
Finite Element Analysis of the Hydraulic Pressure in a Large Heat Exchanger
Authors: She Hu Jun , Wang Shi Jie , Ru Hai Peng
Published: March 2012

By the use of ANSYS common finite element software, the finite element entity model for the heat exchanger is built. The strength analysis of the heat exchanger in the Hydraulic pressure condition is done. The analysis results show that the maximum stress concentrates at the transition the sharp corner of the saddle and the maximum displacement location is the middle cross section of the heat exchanger. According to JB4732-1995, the surplus of material needed is large, the design is safe and meet the strength requirement. The analysis results can be used as useful reference data to design and manufacture in the large heat exchanger.
Appropriate Mass Flow Research of Lubricant for Different Oil Groove Type of Wet Multi-Disc
Authors: Wang Jian Bing , Han Ming , Yu Ding Yue
Published: March 2012

Considering in heat elimination of different oil groove type, simulating accurately heatflux and material parameter through using Fluent UDF function, it is analysed quantificationally how does the lubricant mass flow affecting surface temperature, and when maximum temperature of friction surface is minimum in friction process, cooling lubricant mass flow rate is appropriate mass flow rate. From these analysis, appropriate flow rate is existed in affirmatory oil groove type and load, and different oil groove type has a rather much affect on appropriate lubricant flow rate of multi-disc, radial corner groove need larger flow rate under the condition of adequate heat elimination comparing as double-circle groove.
New Model of Waste Comprehensive Combustion
Authors: Wang Da Cheng , Qian Cai Fu , Liu Xiao Zhou
Published: March 2012

Through the derivation of waste pyrolysis and combustion dynamics of basic equations, a combustion of waste combustion model of an integrated is put forward. According to this model, By using the determination of activation energy and frequency factor values which has been recognized as, and using of numerical simulation method, We can get the appropriate waste combustion characteristics curves. To compare the waste combustion characteristics curves gained by the comprehensive combustion model numerical calculation using numerical calculation between the waste combustion characteristic curve of the combustion test, the correctness of this waste combustion model is confirmed. The results have great significance for the waste combustion numerical computation and practical engineering design guidance
Simulation of Coast Wind Farm Construction
Authors: Du Zhen Long , Gu Wei Dong
Published: March 2012

The wind power is the important complement to fossil fuels usage, bears the advantages of clean, green and renewable. The state has determined to develop the regions locating along the interior coast in Jiangsu province, and the exploitation of wind energy is a key constituent. Wind in these regions has the peculiar properties which affect the wind energy utilization, in the paper the simulation of wind farm in coast region is investigated, one virtual reality system is constructed which involves the representation of sea by level of detail, and representation the hydrogen generation by particle filter. The virtual reality system is able to serve as the platform of wind farm construction, wind energy productivity predication, and the engineering test.
Experimental Study on the Mechanism of Axial Ultrasonic-Assisted Grinding
Authors: Yuan S.X. , Xiao M.
Published: March 2012

This paper analysis the mechanism of axial ultrasonic-assisted grinding(AUAG), by establishing the kinematics model of a single grit; The reason why AUAG forces are more lower than conventional grinding(CG) forces is presented, and the experiments of the grinding force in AUAG comparison with CG were carried out. The results indicate that the grinding force of the superalloy in AUAG is about 40% to 50% less than that in CG.
Finite-Time Stabilization for Singular Linear Time-Delay Systems with Time-Varying Exogenous Disturbance
Authors: Su Min , Wang Shu Wei , Zhang Xian
Published: March 2012

In this paper finite-time stabilization for singular linear time-delay systems with time-varying exogenous disturbances is defined. By combining Lyapunov approach and matrix inequality technique, a sufficient condition of the finite-time stabilization for this kind of systems is presented by a set of feasible problems involving linear matrix inequalities (LMIs) with nonlinear constraints. In addition, the nonlinear feasible problems are solved by an so-called cone complementary linearization (CCL) algorithm. The effectiveness of the approach proposed in this paper is presented by a numerical example.
Multidisciplinary Object Compatibility Design Optimization Based on Simulated Annealing Algorithm
Authors: Yu Bi Qiang , Wang Xiao Qun , Wang Lin Hao
Published: March 2012

In studying Multidisciplinary Object Compatibility Design Optimization method for non-hierarchic system, Simulated Annealing algorithm is introduced to establish system level model , and the basic ideas and working principle is given. In the optimization of system level, the coupling relationship between different subsystems is improved by state accepting function which is embedded in constraint. In this way, abnormal program termination and premature convergence will be avoided and ideal global optimal solution will be achieved effectually. Then the method is proved by used in the optimization design of pendulous micromechanical accelerometer
Ethanol-Gasoline Engine Performance Simulation and Experimental Study
Authors: Liu Shui Fa , Yang Zhong Gao , Feng Wei Bin
Published: March 2012

The shortage of oil resources and aggravation of environmental pollution drive the whole world look for new alternative fuel for vehicles. By virtue of the renewability and burning cleanability, ethanol has become one of the research priorities for alternative fuel for vehicles at home and abroad. Based on the GT-Power software, a model of the internal combustion engine was established, the working process of the engine using ethanol gasoline as the fuel was simulated, and the experiment platform was established to verify the validity of the simulation model.
Study for Spray Experiment and Simulation of Nozzle on Icing Wind Tunnel
Authors: Liu Hai Li , Fan Tian Yu , Xing Yu Ming , Sheng Qiang
Published: March 2012

In this paper, Malvern laser particle size analyzer is used to study the spray characteristic experiment of air atomizing nozzle designed by ourselves. We measured the MVD(medium volume droplet diameter) under different conditions. From the test result, the influences of air pressure, water pressure and ALR(air liquid rate) to MVD and uniformity are analyzed. Furthermore, the variation of the MVD from the distance increase is discussed. The three-dimensional flow field model is built to make numerical simulation by software FLUENT. The simulation results are very consistent with experiment results, which indicate the spray effect of atomizing nozzle is well, and the nozzle designed by ourselves can be well used for the spray system of ice wind tunnel.
The Integration on Electrical Control Systems Based on Optimized Method
Authors: Zhang Ai Rong
Published: March 2012

Very large scale integration (VLSI) applications have improved control implementation performance. Indeed, an application specific integrated circuit (ASIC) solution can exploit efficiently specificities of the control algorithms that fixed hardware architecture cannot do. For example, parallel calculation cannot be included in a software solution based on sequential processing. In addition, ASIC can reduce wire and electromagnetic field interference by a fully system on a chip (SoC) integration. However, there are still two main drawbacks to an integrated circuit solution: design complexity and reuse difficulty. This is true even with programmable logic device (PLD) solutions. Conception aid developer (CAD) combined with hardware description languages (HDL) and VLSI design methodology have accelerated conception and reuse. Nevertheless, the main problem of integrated circuit design is to define the hardware architecture; this is particularly true for heterogeneous algorithm structures such as electrical controls.
The Optimal Design of Injection Mold Cooling System
Authors: Huang Zhao Yang
Published: March 2012

Mold cooling plays a crucial role in the plastic molding process. This paper caries on an analysis of the impact of the cooling system on plastic molding process and put forward three assumptions to simplify the cooling system mathematical equations, establishes a systematic mathematical models taking the cavity cooling water pipe for the study object, optimizes methods and processes , uses MATLAB tools to optimize the design, and gets the optimal solution of the important parameters of cooling system to achieve the reasonable set of the cooling circuits in the complex injection mold structure and optimization of production technological parameters so as to achieve the purpose to improve product quality, shorten cycle time and increase productivity by optimizing the design.
The Study on Man-Machine System Modeling Based on Computer Aided Ergonomics Design
Authors: Wang Jing
Published: March 2012

The article introduces the necessity and superiority of development of CAED. It elaborates the framework and composition of the knowledge repository of CAED system and puts forward the opinion of three-dimensional Man-machine system modeling, in which the crucial elements and methods of system modeling are stressed. Based on all these ideas, the structural framework of CAED system is presented
The Strength Analysis of Aircraft Landing Gear Strut Based on ANSYS
Authors: Chen Fei , Lv Yong , Xing Zhi Wei
Published: March 2012

Because the landing gear structure is complicated, it is difficult to draw accurate stress and strain distribution through the theoretical calculation. In this paper, based on the modeling and stress analysis of the buffer mechanism of aircraft landing gear, by converting the stress of a dynamic system into a static stress, the force of the landing gear struts are calculated. This paper analyzes the strength of the aircraft main landing gear by using computer simulation technology and finite element analysis, it provides an effective basis for maintenance and the damage prediction
Study on Mechanical Behavior of Regenerated Concrete Based on Construction Garbage
Authors: Lv Shu Qing , Tian Lin
Published: March 2012

Some useful explorations and attempts of the regenerated uses of construction garbage have been carried out in our country ,it is used as fill and in road subgrade and pavement project . This paper studies the waste concrete in construction garbage, after comminute ,it can be processed into regenrated aggregate ; analyzes the mechanical behavior of regenerated concrete.
Research on Structure Design and Kinematics Equation of Restaurant Service Robot Manipulator
Authors: Shi Yun Xu , Fan Hong Mei
Published: March 2012

Restaurant service robot integrates multiple sensor information fusion, autonomous mobile robot and human-computer interaction technology, which has a high theoretical value and at the same time, restaurant service robot is able to replace or partially replace the restaurant staff for customer service, which has broad market prospects. This paper describes the design of a restaurant serving service robot manipulator's structure, the bottom using wheeled autonomous mobile platform, the upper arms of a humanoid robot, and gives the kinematics equation
Shaft Vibration Modal Analysis of Turbine-Generating Set
Authors: Xiang Ling , Sun Hao , Li Shu Dong
Published: March 2012

In attempt to analyze modal shapes and the reliability of the Turbine-generator set, we took advantage of LMS Test.Lab testing system, and made some tests and analysis on the Turbine-generator set shaft, we obtained the modal parameter, such as the natural frequencies, subsidence ratio and relevant modal shapes. Frequency response function fitting is represented to verify the modal identification.
Study on the Physics and Mechanical Properties of Freeze-Thaw Soil and Undisturbed Soil
Authors: Zhao Guang Wei , Dai Jing Hui
Published: March 2012

The parameter of the undisturbed soil cannot be used simply in the engineering for the characteristics varied considerably. So the physics and mechanical characteristics of freeze-thaw soil are very important in the freezing method engineering. The physics and mechanical properties of freeze-thaw soil and undisturbed soil are compared by the experiment. And the data of test are shown that after the samples are frozen and thawed, density , dry density decrease and plastic limit decrease, void ratio increase a little, other physicals are similar. Permeability of mild clay greatly increased. Compressibility of mild clay decrease, but compressibility of fine sand increase. This can be used reference to model test, numerical analysis and project designing.
The Study of Super Element Cable
Authors: Sun Xiao Yu , Wang Zhen Qing
Published: March 2012

A parametric super element model for cable passing through multiple pulleys is presented in this study for the static analysis of structures.Crossing cable, with varying wind velocity, have shown the expression for in-plane cable vibrations to give good estimates of the actual aerodynamic damping.The load can be adjusted from 20% to 100% of the power supplied and the number of branches connected can be altered. The discretization is carried out by a standard approach and the resulting model is presented adopting a compact vectorial formalism enabling the formulation of expressions. Generation of closely spaced modes due to the addition of the secondary cable plays an important role on its controlling effects on the main cable response through this type of nonlinear interaction.
Structure Optimization of a Screw Pump Unit Based on Load Identification
Authors: Zhang Yue , Shuai Zhi Jun , Li Wan You , Xiao You Hong , Chen Chun Lai , Zhang Quan
Published: March 2012

In this paper the vibration of a screw pump unit was studied. Firstly the modal of this pump unit was calculated, which was possible thank to the exact finite element model. And the exactness of the result was verified by comparing with the testing one. Based on the correct simulation modal, the load is identified using the experimental results, and the accuracy of the identification is confirmed using the response error. Combined the response spectrum, the load spectrum and the modal analysis results, the causes and control methods of the screw unit's vibration are analyzed. Finally, according to the foregoing calculation results, the system is simulated and optimized. The identified load is loaded on the optimized structure. The responses calculated are compared with the original structure and the optimized results are evaluated.
Fuzzy-PID Control in Electro-Hydraulic Proportional Valve Control System of Snow-Melting Agent Spreading Truck
Authors: Gao Jian Shu , Zou Yong Qi
Published: March 2012

According to the characteristic of the snow-melting agent spreading truck that the spreading measurement is maintaining unchanged when it's in the operation process. We designed the rotate speed system controlled by the method of electro-hydraulic proportional control. With the nonlinearity and time-varying of the controlled system, we applied the method of Fuzzy-PID control to conduct the study of electro-hydraulic proportional speed system. By the simulation of MATLAB/SIMULINK, the results shows the dynamic property of the system gets obviously improved with using the Fuzzy-PID controller and verifies the effectiveness and practical applicability of this design.
The Integrated Structure Design for the Transmitter of the Companion Satellite
Authors: An Ye , Wang Ping Lian , Li Feng , Zhang Lei , Li Xu Zhi
Published: March 2012

The integrated structure design for the transmitter, for use in the Companion Satellite (BX-1) in SZ-7 flight mission, is described. Based on the single-layer structure with several grooves formed on both sides, the miniaturization and high reliability is achieved while offering uncompromised electromagnetic compatibility (EMC) and convenience for assembly and disassembly.
Optimization of Vibrating Parameters for Large Linear Vibrating Screen
Authors: Wang Yong Yan , Shi Jia Bin , Zhang Fei Fei , Lu Hong Li , Xu Fei
Published: March 2012

This thesis aims at the maximal productivity per unit power for linear vibrating screen. By means of MATLAB optimization technology, the optimal mathematical model of linear vibrating screen is established.On the basis of the actual design parameters for the 27m2 linear vibrating screen, the optimization of vibrating parameters for vibrating screen is solved by MATLAB Optimization Toolbox. According to the result of optimization design compared with ordinary design, the optimization method is proved to be consistent and reliable.
Design of a Domestic Wastewater Reuse System
Authors: Wang Ting Jun
Published: March 2012

A type of wastewater reuse system for domesticity with remote-control is presented in this paper. For domestic water-saving, the wastewater reuse system is designed via hydromechanics, and its remote-control system is discussed. The system consists of wastewater storage tank, electromagnetic valve, electronic remote-control device, and pipelines. The principle of its water-saving is also analyzed in three control models. The results indicate that the wastewater reuse system can make the best of reusing domestic bathing and washing wastewater to wash down toilet bowl in order to save water supply. Electromagnetic valve is convenient to control and has good seal performance for avoid wastewater leak. Two enactment time control models and a manual control model can effectively satisfy with user, farther to save wastewater
Long Distance Pipeline Cathodic Protection Test System Based on GSM
Authors: Wang Hu Li , Liu Hai Le , Yang Xian Jiang , Liu Feng
Published: March 2012

With the mode of combining long distance pipeline cathodic protection method and GSM communication technology, the System realizes automatic pipeline testing and transmission of test data, and has succeeded in solving transmission of test data at the area without GSM signals.
Study on Structure of Articulated Needle and its Obstacle Avoidance
Authors: Wang Yi Zhong , Xia Lei Zhen , Huang Hua Fang , Chen Yong Hua
Published: March 2012

Needle is one of most commonly-used medical devices in minimally invasive surgery. Inserted into a human’s body through the skin, a needle can perform many diagnosis and treatment tasks. The structure of an articulated needle and its obstacle avoidance performance are studied in this paper. The shapes of obstacles, the locations of targets and the choices of inserting points are analyzed. Accordingly, the relationships between the structure of an articulated needle and its obstacle avoidance performance are got. Corresponding design for the structure of an articulated needle according to the actual situlations of insertion can improve the obstacle avoidance performance effectively, and then the accuracy of insertion control can be improved.
Coercive Force Enhanced by Nanometer-Sizing of Magnetic Column and Measured by X-Ray Magnetic Circular Dichroism (XMCD)
Authors: Hosaka Sumio , bin Mohamad Zulfakri , Akahane Takashi , Yin You , Sakurai Hiroshi , Kondo Yuji , Ariake Jun , Honda Naoki , Suzuki Motohiro
Published: March 2012

We have studied the possibility to form fine magnetic column arrays using 30-keV-electron beam (EB) drawing with thin calixarene resist and 200-eV-Ar ion milling, and nanometer-sizing effect of the magnetic column on the corecive force for patterned media. We achieved 20-nm-sized resist dot arrays on PtCo magnetic and thin metals layers on glass substrate. We formed fine magnetic column arrays with a diameter of 39 to 106 nm and a space of about 100 nm using the resist pattern by the 200-eV Ar ion-milling. Using the nano magnetic column arrays, the hysteresis were measured by X-ray magnetic circular dichroism (XMCD) with an energy of 11.57 keV, which corresponds to an energy edge of Pt-L3. It is clarified that a coercive force of the nanometer-sized magnetic column increased as the diameter decreased.
The Single Pipe Double Cavity IMS Contraband Explorer for Trace Detection
Authors: Zhu Hong
Published: March 2012

This paper presents the work principle and characteristics of the single pipe double cavity technology of positive and negative ions migration spectrum detection to terrorism and viper. The overall design of the double channel IMS detectors was discussed and the single pipe double cavity ion tube chemical and mechanical and electrical constitute integration is analysed. New application prospect for the future of the double channel of the IMS effective detection and prohibited item technology is presumed upon.
The Finite Element Analysis on the Submarine Pipeline under the Seismic Loading
Authors: Yan Yi Fei , Cheng Lu Feng
Published: March 2012

Seismic loading is one of the most important factors of submarine pipeline damage, so the research on submarine pipeline failure mechanism is still lifeline engineering frontier topics. According to Biot consolidation theory, considering the interaction of submarine pipelines with the soil medium under earthquake action, the model of the seabed-pipeline interaction is established. The influences of wall thickness, radius and cover layer thickness on submarine pipeline strain response are studied under El Centro seismic wave based on this model. The calculating results show that effective stress and axial strain of the submarine pipeline increases with wall thickness, radius and cover layer thickness increasing.
Research on Aerodynamic Noise of Base Styling Characteristics of Car Rearview Cover
Authors: Chen Xin , Zhou Jun Long
Published: March 2012

The 3-D digital models are established for two kinds of base styling of rearview cover. The compare analysis using Fluent model is based on the acoustic theory of computation. The results show that the average sound pressure level of up-raised rearview cover model is about 5 dB lower than that down-raised rearview cover model, and in all of the frequency range were apparently different. At the same time, the vortex of down-raised happened at the back location, which is more closer to the passenger’s ear, and affect the car interior noise. The results of analysis will conduct the design of rearview styling effectively.
A New Coordinate Control Method for Electric Motor Regenerative Braking and ABS Coordinate
Authors: Wang Ren Guang , Shi Guang Kui , Chen Hong Tao , Zhang Lin Tao , Yu Chao
Published: March 2012

In pure electric vehicle and hybrid electric vehicle, the adoption of motor barking for energy recycling make its braking control more complicated. Making good use of braking energy can improve vehicle efficiency. A new method was developed to coordinate the motor regenerative braking and ABS braking. Which identify the road condition with real time basing on wheel speed information from four wheel speed sensors. Then control system decides the braking force provided by ABS system. The residual braking force is produced by motor barking to meet total braking force requirements. The two braking forces are coordinated by control system to perform brake function of vehicle.