bluuebunny/crossref_metadata_2025 huggingface dataset:
Spatiotemporal Variation of Wind Erosion Climatic Factor in Shandong Province
Authors: Tian Shou Gang , Ma Liang
Published: March 2013

With Mann-Kendall non-parametric test and spatial interpolation methods, the research has explored the spatial and temporal characteristics of changes of wind erosion climatic factor C within 58 years in Shandong province. The annual average C value of the province is 163.57 with the peak value occurred both in Yantai, Weihai cities and the central area. The Yellow River flood plain, which is the most serious wind erosion district, only lies between 50 ~200. The average C value has shown a significant downward trend in the entire province for 58 years, and the peak occurred in 1962 and valley value occurred in 1990. The C value has shown a downward trend in most area of the province, among which the decrease of areas centered on Ji’ning is the greatest and reach -7/a. On the Yellow River flood plain, the C value also shows a regional difference declining trend.
Greenhouse Remote Control and Monitoring System
Authors: May Zazilah , Hashim Hairil Hafizi Mohd
Published: March 2013

Greenhouse offers a protective environment for crop production while allowing natural light transmission. Continuous control and monitoring of the greenhouse parameters is a pivotal part in the production practices. This paper aims to tackle the weaknesses of the current system in terms of costly and complex equipments, high maintenance cost, instability and inability to control and monitor from remote location. It describes how the innovative greenhouse control system can be characterized as an event-based system, where every control actions are primarily deliberated compared to the events formed by instabilities from surrounding elements. Proposed paper offers a costs-saving solution with low maintenance required, as well as producing a great performance results. This system eliminates the over-dependability of the industry on human workforce. Basically, the system will continuously measure, control and monitor two of the most important parameters, temperature and light intensity. Hardware such as LM35DZ temperature sensor and light dependent resistor (LDR) used to measure and send input signal to the controller. On the other hand, heating resistor and bulb are receiving output signal from the controller to regulate the controlled variable. The software-based controller able to control the processes while eliminating steady-state error and also give fast response to any changes in the input, or in the effect of disturbance into the system.
Analysis of Enterprises’ Environmental Responsibility from View of Economics
Authors: Zhang Nan Nan , Zhang Yu Hong , Li Yue
Published: March 2013

The paper firstly gives a definition of enterprises' environmental responsibility. Then from view of economics, it gives an analysis of lack of enterprises' environmental responsibility, including the analysis of property rights, hypothesis of economic man and externality theory. Finally, it raises some proposals to improve the lack of enterprises' environmental responsibility, such as government's economic incentives for enterprises, establishment of ecological compensation system, and law construction.
Simulation of Reticle-Setting State at Image-Stabilization Fire Control System Based on RV
Authors: Liao Zi Li , Yan Yu Lin , Zhao Zi Xu , Hu Rui Fan
Published: March 2013

Aiming at the question about armor training simulator whose image visual is not vivid and function is not perfect in our country [1, 6], the paper introduces RV engine in simulation training system of armored vehicle. It has researched establishment of entity and fire control system model based on RV, and then accomplished the simulation of range setting state, including the changing rule of gunner viewer-sight of the Image-stabilization fire control system, the principle on the measuring distance with laser, and the calculation of the location and height lead.
An Improved Algorithm of Linearization Localization Based on RSSI Ranging
Authors: Li Lei , Zhu Hao
Published: March 2013

The positioning technology has become one of the most popular studied objects since it has been implemented in many fields. With five reference nodes at least, linearization localization algorithm get an acceptable accuracy. With Taylor Series Expansion, we can overcome this shortcoming. First, we give the blind node an initial coordinate, then we expand the group of binary quadratic based on RSSI with Taylor Series at the point of initial coordinate, remove quadratic and higher, at last ,we apply iteration algorithm to estimate the real coordinate of blind node. Compared to the original, this new method can get a very good accuracy with only three reference nodes.
A New Ant Colony Algorithm for Finite Element Analysis
Authors: Meng Lei , Zhang Shu
Published: March 2013

By means of measuring creep curves, microstructure observation and FEM analysis of the stress field near the hole; an investigation has been made into the influence of the defects on creep behaviors and microstructure evolution of single crystal nickel-based superalloys. Results show that the creep lifetimes and plasticity of the single crystal nickel based superalloys are obviously decreased by microstructure defects. During high temperature creep, the stress isoline near the holes region displays the feature of the acetabuliform distribution, and possesses the bigger stress value at 45 angle direction relative to the applied stress axis. Average interpolating scaling function is constructed with symmetric interpolating scaling function, and the two scaling functions are given the relationship between the derivatives, which provides a convenient approach for the interpolation, and greatly improve accuracy.
Safety Testing Method Analysis of Computer Software
Authors: Wang Pin
Published: March 2013

Along with the computer network application becomes more popular, along with our country Internet market becoming stronger, more and more individuals or enterprises to commercial activities into the electronic commerce platform, so the computer software security has become increasingly important. Therefore, to strengthen the security of computer software protection research is very necessary, and guarantee the software safety is one of the effective means of software security hidden trouble detection. This paper will discuss the computer software system in safety detection method. Computer software security testing technology is existing computer software safety based, effective recognition computer software security problems in.
The Household Appliance Control System Based on ZigBee Network
Authors: Hu Jing , Zhang Wei Qiang , Li Xiang Yang
Published: March 2013

ZigBee was rising up in recent years, It has some advantage which other wireless communication technology don’t have for example: low power consumption, short distance, networking flexible. It applies widely. This article puts forward a ZigBee household appliance control system design based on wireless communication network, through to ZigBee research. It also designed a ZigBee handheld device, which used to control domestic appliance.
Research and Design of Experiment Platform Based on ARM Embedded System
Authors: Zhang Jin Hai
Published: March 2013

With the development of the global economy, national exchange frequently between navigational skills improve more and more attention. Radar, ARPA has identified the ship's capabilities, but because of their limitations were unable to adapt to the needs of modern maritime security. As digital communications technology, the rapid development of computer and network information technology, development of AIS Technology Foundation has been set up. Navigational aids in the shipping industry have become increasingly demanding of circumstances, marine automatic identification system (AIS) came into being. This article examines the AIS system architecture based on wireless local area network, building a wireless local area network.
Study on Marine Automatic Identification System Based on Wireless Local Area Network
Authors: Hu Xu Ling
Published: March 2013

With the development of the global economy, national exchange frequently between navigational skills improve more and more attention. Radar, ARPA has identified the ship's capabilities, but because of their limitations were unable to adapt to the needs of modern maritime security. As digital communications technology, the rapid development of computer and network information technology, development of AIS Technology Foundation has been set up. Navigational aids in the shipping industry have become increasingly demanding of circumstances, marine automatic identification system (AIS) came into being. This article examines the AIS system architecture based on wireless local area network, building a wireless local area network.
Study on Classification of Network Streaming Media Encryption
Authors: Zhang Jin Hai
Published: March 2013

Rapid development of the Internet, to provide streaming media business emergence of soil to grow, with the updated development of streaming media technology, it security problems more and more attention. In view of the breadth of media stream data storage and transfer, and easy features, making it more vulnerable to damage and attack, and the entire process has had to face very large data flows. Therefore, encryption of digital images and video special research is necessary on the issue.
Survey on a Fast Hyperspectral Image Classification Method Combined with Spatial Information
Authors: Wang Qian
Published: March 2013

A fast classification method of hyperspectral image is presented to resolve these problems caused by large processing data and noise influence. First, space information is used to extract Spatial Region Feature Spectral. Next, the non-linear method of feature extraction is used to extract the feature of SRFS. The simulation results show that the method can significantly improve the classification results of classifiers and reduce computing time.
A Surface-Enhanced Resonance Raman Scattering Method for the Determination of Trace Crystal Violet on Colloidal Au Nanoparticle Substrate
Authors: Jiang Zhi Liang , Ma Lu , Liang Ai Hui
Published: March 2013

Colloidal Au nanoparticles as active substrate for surface-enhanced resonance Raman scattering(SERRS) were prepared by the trisodium citrate-reduced procedure. In pH 6.6 Na2HPO4-NaH2PO4 buffer solution and in the presence of aggregation reagent NaCl, nanogolds were aggregated to form stable aggregated- nanogolds (ANG). The crystal violet (CV) adsorbed on the surface of ANG to form CV-ANG conjugates that produce strongest surface-enhanced resonance Raman scattering peak at 1616 cm-1. In the optimal condition, the SERRS intensity at 1616 cm-1 was linear to the CV concentration in the range of 2.5×10-8 -1.75×10-7 mol/L, a surface-enhanced resonance Raman scattering assay was set up for detection of trace CV, with good selectivity.
Research on Reservoir Flow Unit Classification at Block D404 of Xinzhan Oilfield in Songliao Basin
Authors: Liu Zhen , Song Ning , Wei Zhong Liang , Yang Shuai Shuai , Guo Hai Ying
Published: March 2013

Remaining oil is enrichment relative, and the reservoir heterogeneity is serious at D404 block of Xinzhan oilfield, Songliao Basin. It is necessary of classification research to guide the infilling and the injection-production system adjustment. Through consolidation analysis of Core sample, porosity, permeability, shale content and flow zone index are selected as classification parameters of the division of flow unit. Using flow zone indicator method , the reservoir was divided into four types including I,II, III,IV types. The Classification results show that I type is the best reservoir and the strongest percolation capacity, and II,III types are the second, however IV type reservoir is the worst, the weakest seepage ability. the flow unit classification has solved some problem that the heterogeneity of reservoir has an influence on logging response, laying the foundation for the watered-out mechanism research and for the establishment of the identification standard.
Based on a New Immune Genetic Finite Element Analysis of the Alloy
Authors: Meng Lei , Zhang Shu
Published: March 2013

We have used the metaphor of ant colonies to define “immune system”, a class of distributed algorithms for combinatorial optimization. In this paper we analyze some properties of immune-cycle, the up to now best performing of the immune 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.
Research on Simulation of Motion Compensation for 8×8 Omnidirectional Platform Based on Back Propagation Network
Authors: Tian Peng , Zhang Yu Nan , Zhang Jian , Yan Nan Ming , Zeng Wei
Published: March 2013

In order to reduce the influence of slippage and improve the accuracy of 8×8 omnidirectional platform motion, this paper analyses the kinematic characteristic and builds the dynamic virtual model. A method of Back Propagation(BP) network is used to nonlinear motion compensation. Comparing simulation results before with after compensation, the data show that motion errors can be reduced, which indicates that the method is effective.
The Study on Flow Field Numerical Analysis
Authors: Liu Xue Peng , Zhao Dong Mei
Published: March 2013

A kind of generalized fluid concept is proposed to solve the problem of paste. A set of velocity boundary conditions processing scheme is put forward. The SIMPLE algorithm, staggered mesh, combined with the boundary element discrete method, the momentum equation and pressure correction equation is in discretization.
Application of Integrated Electrical Mechanical Control System Technology for Civil Transportation Aircraft Design and Development
Authors: Zhang Lei , Shan Nan , Zhang Miao Huan
Published: March 2013

Integrated electrical mechanical control system (IEMS) technology applied on civil transportation aircraft is firstly introduced in the article. Besides, from the standpoint of airframer, detailed analysis of design and development risks is conducted and relevant mitigation suggestions are proposed accordingly. Finally, the importance and strategy for the construction of a simulation and test all-in-one bench by airframer are also discussed.
The Study on Motor Speed Controller
Authors: Liu Xue Peng , Zhao Dong Mei
Published: March 2013

The speed regulating motor controller is designed. On the basis of the controller the position detection, the control strategy and the main power circuit application are discussed. The related hardware debugging is completed and tested.
An Improved Single-Phase Free-Surface Lattice Boltzmann Model with Surface Tension and Wall Adhesion
Authors: Yu Yang , Chen Li , Lu Jian Hua , Hou Guo Xiang
Published: March 2013

Free-surface model with surface tension and wall adhesion(wetting) is a very efficient technique to simulate two-phase flows with high density and viscosity ratios, such as etching and casting processes. In this paper, a conservative surface tension and wall adhesion model based on lattice Boltzmann single-phase free-surface method is proposed. The effectiveness of the model is demonstrated by simulating the flows induced by wall adhesion and surface tension, and filling processes in a 2D cavity.
Study on the Temperature Field of U75V Rail in the Cooling Process Based on ANSYS
Authors: Jia Hao , Yuan Si Yu , Liu He , Tong Shan Hu , Fu Li Hua , Song Hua
Published: March 2013

Uneven distribution of temperature is one of the important factors which influences heavy rail bending changes during the cooling process. Through the research of temperature field can reasonable analysis the heavy rail bending change rule, so it is necessary to study the temperature change rule during heavy rail cooling process. This paper adopts finite element analysis software ANSYS to set up three-dimensional models of U75V heavy rail and the cooling bed, and numerical simulate the cooling process. In which, it is studied the temperature changing rules and its distribution rules, emphatically analyzed temperature changing rule during the phase transition phase, and got the temperature changing rules and distribution rules in final cooling time. Especially, it is considered that the heavy rail placed on its side, the latent heat of phase transition and thermal radiation. This research can provide the theory basis and the advisory opinion on the formulation of cooling technological parameters and preflex regulations of the rail.
Size Effect on Buckling Behaviors of Gradient Elastic Slender Columns
Authors: Kong Sheng Li
Published: March 2013

For the buckling problems of slender columns, size effects on buckling behaviors have been studied based on the modified couple stress theory. The governing equations are obtained by using variational statement and the buckling loads of slender columns are assessed. The results show that the buckling loads predicted by the new model are size-dependent.
A Comparison of Two Accelerated Degradation Models with Temperature and Humidity as Accelerating Stresses
Authors: Wang Wen Yu , Ma Xiao Bing , Chang Shi Hua , Kang Rui
Published: March 2013

In this paper, a comparison of two kinds of acceleration models under temperature and humidity joint stress is given. The traditional generalized Arrhenius model and Eyring Model give two ways to describe the accelerated life of products. First, through some mathematical transformation and synthesizing of these two models we have concluded two acceleration models under temperature and humidity joint stress which are described in detail in this paper. Estimations of model parameters are also given. Secondly, by comparing accelerated life coefficient and coefficient of variations, we can take a glimpse of the models in their fitness of actual conditions. Then, since the models presented in this paper follow the features of nested models, a likelihood ratio test is conducted which takes a further step in the work of model selection. At last, these two models are compared through an application example – Smart Electricity Meter.
Research on Thermal Degradation Kinetics of Polyphenylene Sulfide Filter Media
Authors: Chang De Qiang , Liu Jing Xian , Mao Ning , Chen Bao Zhi
Published: March 2013

In order to study the thermal stability of PPS (polyphenylene sulfide) filter media, by means of thermogravimetry(TG), thermal degradation kinetics behavior of two kinds of PPS filter media were analyzed. The kinetic parameters of PPS filter media were obtained according to Flynn-Wall-Ozawa method. Thermal stability of PPS filter media was discussed. It was found that the initial decomposition temperature and activation energy of N3 sample are all higher than B1 sample, the thermal stability of N3 sample is better than B1 sample, and kinetic analysis can be used as an important method to evaluate the thermal stability of filter media.
Magnetism and Solid Coupling Vibration of Stator Double-Shell System of Asynchronous Machine
Authors: Li Bai Zhou , Qiu Jia Jun
Published: March 2013

The electromagnetic force produced by air-gap eccentricity magnetic field includes kinds of frequencies, and excites multiform magnetism and solid coupling vibrations of stator system. In this paper, based on the improved model of double-shell system of asynchronous machine, the magnetism and solid coupling vibration equations of double-shell system are obtained. Considering the air-gap eccentricity, an improved expression of electromagnetic force is derived. Then the method of multiple scales is applied to solve the nonlinear parametric resonance. Through the numerical calculation, the influence of electromagnetic and mechanic parameters on amplitude- frequency characteristics is analyzed.
Existence of Solutions for Elliptic Equation with Critical Sobolev Exponent
Authors: Xiu Zong Hu
Published: March 2013

In this paper, we consider a class of elliptic equation on unbounded domain. By the variational method, we prove the existence of solutions.
The Application and Analysis of the Risk Assessment Model about BLEVE Accident
Authors: Xie Fei , Song Wen Hua , Chen Zhen , Lv Ling Yue
Published: March 2013

The flammable vapor pressure inside the combustible liquid storage tanks in the fire environment elevates, and the of the tank wall the yield strength of enduring the heat decreases, which cause the collapse to occur soon, resulting in the happen of BLEVE. BLEVE is an incident form of great harm, and the study of its formation mechanism and hazard model is of great significance for the safety of the chemical enterprise. In this paper, the physical and chemical characteristic of dichloropropane and BLEVE in a dichloropropane tank area is analyzed, and the accident analysis model is built. According to TNT equivalent method, the vapor cloud fire and explosion models and the blast wave overpressure injury criteria, we calculated the accident consequence of BLEVE in different filling levels. The calculation and analysis shows that, if the BLEVE occurred, the entire tank area and adjacent buildings will be severely affected and the affect area will be up to 50.35 meter; the people less than 7.43 meter from the explosion tank will be subject to serious injury or death. Based on the above substance hazardous characteristics analysis in dichloro propane tank storage area and the corresponding qualitative and quantitative analysis, and according to the relevant requirements of the specification, the fire safety prevention and control measures in the tank area should be further strengthened.
Reinforcement of Polypropylene Using Micro-Fillers
Authors: Le Hieu Giang , Huang Shyh Chour , Nguyen Van Son , Dao Thanh Phong
Published: March 2013

This paper focuses on the effect the ratio of filler (Na10MB3A) on the tensile strength of polypropylene (PP). This filler has been added to PP in various ratios and mixed evenly before injecting. The tensile strength of PP increases gradually when the ratio of filler increases. Tensile strength reaches its maximum value with a certain ratio of filler, and thereafter the strength decreases as the ratio of fillers is increased. This research revealed that the tensile strength of PP can rise by approximately 13.5% with the addition of Na10MB3A at a ratio of 3%.
Polypyrrole Actuator Operating Characteristicsin Electrolyte Solution Mixed with Methanol
Authors: Tsumuji Futo , Hoshino Daiki , Ogihara Shou , Duan Zong Fan , Suzuki Yutaro , Kadoyama Tetsuya , Yamasaki Jun , Nishioka Yasushiro
Published: March 2013

In this work, a PPy actuator was fabricated by galvanostatic electropolymerization. The electrochemical deformation behaviors of the PPy actuator were investigated in aqueous solutions of an electrolyte, lithium bis(trifluoromethanesulphonyl)imide (LiTFSI), containing different concentrations of methanol. Marked improvement of the actuating strain of approximately 9% was achieved when the actuator was driven by a potential between –1 and 1 V in the LiTFSI electrolyte containing 40 to 50% of methanol under a load stress of 0. 3 MPa. On the other hand, the actuator functioned in the electrolyte solutions containing more than 60% of methanol showed rapid decrease of the actuating strain and the electrochemical creep after repeated actuations. Possible mechanisms for these behaviors were discussed.
Improved Performances of All-Polyimide Fluidic Devices Using Thermal Nanoimprinting
Authors: Kuroda Keigo , Komori Takayuki , Saito Hirofumi , Ikoma Ryuta , Kimura Yota , Komatsuzaki Hiroki , Suzuki Kenta , Youn Sung Won , Hiroshima Hiroshi , Maeda Ryutaro , Nishioka Yasushiro
Published: March 2013

Flexible micropumps are important components for advanced microfluidic systems. Here, polyimide (PI) for flexible micropumps was focused on. This is because PI has many advantageous properties such as good biocompatibility, high thermal stability, and superior mechanical strength. However, the difficulty in realizing an all-PI micropump lies in fabricating microstructures on PI film surfaces. In this paper, we present improved performances of a flexible all-PI micropump fabricated using high-temperature hot embossing above 320 oC that is considerably higher than its glass transition temperature of 275 oC. The fabricated micropump had diffuser/nozzle valves and a chamber with 5 mm diameter, and it was functioned by vibrating a 2-µm-thick PI diaphragm with alternating air pressures outside of the diaphragm. The flow rate of deionized water in the micropump reached to 110 μl/min at 3 Hz.
Valveless Micropumps with Dual Polyimide Diaphragms
Authors: Ikoma Ryuta , Komatsuzaki Hiroki , Komori Takayuki , Kuroda Keigo , Saito Hirofumi , Nishioka Yasushiro
Published: March 2013

Air-actuated valveless micropumps with dual polyimide (PI) diaphragms have been fabricated and characterized. A 5-μm-thick PI membrane was spin-coated on Si wafer, and released by Si ICP etching. The membrane was actuated by alternating air pressure of 10 kPa. The water flow-rate achieved 80 μl/min at the frequency of 1 Hz and 126 μl/min at 3Hz. Due to nice adhesion between Si and polyimide diaphragms, we could fabricate the double diaphragm micropumps with simplified fabrication processes.
Single-Ball Rolling Contact Fatigue of 13Cr-2Ni-2Mo Stainless Steels Quenched by Induction Heating Method
Authors: Kida Katsuyuki , Honda Takashi , Seto Yoshihiko , Santos Edson Costa , Shibukawa Takuya
Published: March 2013

Rolling contact fatigue tests of 20mm-diameter 13Cr-2Ni-2Mo stainless steel bars was carried out using a newly developed single-ball system. The bars were quenched by induction heating method and after that tempered. Sectional observations of the subsurface cracks were made after the surface layer separations. Based on the observations, stress analysis was performed in order to investigate the relation between flaking failures and subsurface crack growth. From these calculations it was found that the shear stress propagated subsurface cracks and finally caused the flaking failures. Furthermore, eight specimens were fatigue tested and Weibull statics distribution of RCF life were calculated using Johnson's statistical method. It was found that the basic life (L10) of the bars under 5.3GPa Hertzian stress was 8.33×106 cycles.
The Sequence Injection Analysis of Automobile Air Inlet Grille Plastic Part
Authors: Chu Jian Zhong
Published: March 2013

The application of sequence injection in large-scale automobile air inlet grille plastic part are described. The CAE comparative experimentation of between the simultaneous injection and sequence injection were processed and a series of the data such as weld mask, temperature and pressure were gained. Through the comparatively experimentation it was discovered that sequence injection can raise the quality of large-scale flat palstic part availability and cut down expenses
A Digital Peak Current-Mode Control PFC with Bifurcation Control
Authors: Hung Chung Wen , Zhang Li Sheng , Lu Lung Chu
Published: March 2013

A boost power factor correction (PFC) in continuous conduction mode (CCM) by the digital peak current-mode control method with bifurcation control is discussed in this paper. The proposed method is used to prevent the inductor current bifurcation behavior, which is caused by sub-harmonic oscillation when the duty cycle is upon to 50 percent. The bifurcation behavior will increase the inductor current ripple and dissipation, then reduce the Power Factor (PF). Different from the ramp compensation signal performed with analog IC in some papers, a MCU is used to be the controller and also provides the digital compensation function in this paper. With the timer, ADC, PWM, and comparator which are built in the MCU, the necessary parameters will be measured without extra components and additional cost. The proposed method is based on those parameters. In this paper, the MATLAB/Simulink simulation results show the proposed method workable.
Robust Control Design and Analysis Using SCILAB
Authors: Kim Yoon Soo
Published: March 2013

This paper introduces a open-source free software package, SCILAB, for teaching a typical post-graduate level robust control course. SCILAB is a useful computational tool that may replace high-cost control design and analysis software such as MATLAB. Although SCILAB has been around for a long time, it seems that there is no tutorial available in literature which demonstrates the use of SCILAB for robust control design and analysis. This paper describes the use of SCILAB for the main topics discussed in a typical post-graduate robust control course, including mixed-sensitivity H-infinity control design, H-infinity loop-shaping design and mu-analysis.
Multidisciplinary Design Optimization of a High-Flow Control Valve
Authors: Cao Fang , Wang Yong
Published: March 2013

According to the real structure and work condition of a high-flow gas pressure control valve used in recycling generating electricity project, a multidisciplinary design optimization (MDO) model is set up. Taking the structure and flow field analysis results as designing criterion, the MDO framework is put forward, which realizing the integration of multidisciplinary and two physical fields of control valve. To ensure that the gas transmission capacity which is the design prerequisite, the optimization takes reducing noise of control valve as system goal, while the valve wall thickness and flow velocity are decreased. And the Reynolds number, stress intensity and body total weight are also meet requirements. From the standpoint of fluid and structure, to realize MDO is of great practical significance for advancing research level of high-flow control valves.
Precise Angle Control of Electromechanical Actuator with Fuzzy PID and Genetic Algorithm
Authors: Cui Ye Bing , Zheng Jian , Ju Yu Tao , Xu Jing
Published: March 2013

With the development of the new kinds of permanent magnetic materials and the tech of drive circuits, more and more electromechanical actuators have been used in the space applications, such as tactical missiles, smart UAV and so on. This study presents an electromechanical actuator actuated by four Brushless DC motors (BLDC) driven rudder wings .Two different control schemes are implemented to regulate the output angle of the EMA rudder wings. Namely a fuzzy logic PID controller （Fuzzy-PID）and a genetic algorithm optimized PID (GA-PID) controller. The feasibility of the two controllers is evaluated both numerically and experimentally, it is shown that Fuzzy-PID leads to a loss of control in high frequency conditions, while, GA-PID can ensure the precise angle control and an accurate tracking performance.
Robust Fixed Point Transformations in the Model Reference Adaptive Control of a Three DoF Aeroelastic Wing
Authors: Tar József Kázmér , Rudas Imre J. , Bitó János F. , Kósi Krisztián
Published: March 2013

The Model Reference Adaptive Controllers (MRAC) of dynamic systems have the purpose of simulating the dynamics of a reference system for an external control loop while guaranteeing precise tracking of a prescribed nominal trajectory. Such controllers traditionally are designed by the use of some Lyapunov function that can guarantee global and sometimes asymptotic stability but pays only little attention to the primary design intent, has a great number of arbitrary control parameters, and also is a complicated technique. The Robust Fixed Point Transformations (RFPT) were recently introduced as substitutes of Lyapunov’s technique in the design of adaptive controllers including MRACs, too. Though this technique guarantees only stability (neither global nor asymptotic), it works with a very limited number of control parameters, directly concentrates on the details of tracking error relaxation, and it is very easily can be designed. In the present paper this novel technique is applied for the MRAC control of a 3 Degrees-of-Freedom (DoF) aeroelastic wing model that is an underactuated system the model-based control of which attracted much attention in the past decades. To exemplify the efficiency of the method via simulations it is applied for PI and PID-type prescribed error relaxation for a reference model the parameters of which considerably differ from that of the actual system.
Stationary Response of Duffing-van der Pol Oscillator with Delayed Feedback Control under Wide-Band Noise Excitation
Authors: Lin Peng , Feng Chang Shui , Wang Qiao Yi
Published: March 2013

The stationary response of Duffing-van der Pol oscillator with time-delayed feedback control under wide-band noise excitations is studied. First, the time-delayed feedback control force is expressed approximately in terms of the system state variables without time delay. Then, the averaged Itô stochastic differential equations for the system are derived by using the stochastic averaging method. Finally, the stationary response of the system is obtained by solving the Fokker-Plank-Kolmogorov equation associated with the averaged Itô equation. The effect of time delay in feedback control force on the response is analyzed. The theoretical results are well verified through digital simulation.
Driving Performance Advancement for SRM Using a Novel Adaptive Learning Control on Dominant Parameters
Authors: Lin Shou Chuang , Wang Shun Chung , Liang Kuei Chiang , Wang Shun Yuan , Tseng Chwan Lu
Published: March 2013

In this paper, an adaptive learning control (ALC) based on the repetitive tuning of the dominant energized parameters is proposed to minimize the torque ripple and energy conversion loss of the switched reluctance motors (SRMs). A simple and effective modulating strategy on excitation commutation angles and duty cycle is repeatedly applied to the SRM until desired performance tracking is achieved. According to the load variation, an initial suboptimum operating condition, derived from the expert’s knowledge and experience as well as accurate magnetization characteristics of the SRM, is offered to promise a well starting dynamics, learning ratio and convergence speed. Driving performance enhancement can be obtained on account of the best programming of phase current profiles via the well-tuned parameters to make minimum energy conversion loss and torque ripple reachable. Evolution and simulation based on the DSP-based processor has been developed to realize the proposed control approach and setup the SRM drive system. Experimental results on a 4-phase 8/6 pole SRM are given to show the effectiveness and performance enhancements of the presented control mechanism.
The Research of Digital Display Pump Test Stand Based on IPC
Authors: Ma Kai
Published: March 2013

This paper present the overall design of measurement and control system of digital display pump test stand based on IPC. IPC and NI LabVIEW were adopted in this system to realize many functions such as the rotation speed regulation of driving axis on pump test stand, measurement of fuel injection quantity and oil temperature, measurement and control of oil pressure, and so on.
Retrieval and Clustering for Multiple Disciplines Design Knowledge Based on Ontology and Semantic
Authors: Zhang Guo Hai , Li Yu Sheng
Published: March 2013

This paper presents a new kind of retrieval and clustering solution for multiple disciplines design knowledge during complex product development. The main contributions of this study can be focused on four points: The first is to distinguish the concepts and contents of ontology theories and semantic web. The second is to map the distinction and relationship between concepts to similarity and correlation of product design knowledge. The substances of conceptual hierarchy are introduced and their formal descriptions are given in the article. The third is to explore the specific calculation methods for semantic similarity and relevancy using the above theories and approaches. Finally, a model for design knowledge retrieval if proposed, and the tactics for knowledge retrieval and clustering are given.
Influence of Parameters in Coupled Adaptive Self-Organizing Sliding-Mode Fuzzy Controller Using Volumetric Type Bending Machine
Authors: Wong Ray Hwa
Published: March 2013

The dual-axial volumetric type bending machine is a coupled system and has significant structural interaction. Fuzzy controllers are widely applied in electro-hydraulic servo control systems. This paper proposes a coupled adaptive self-organizing sliding-mode fuzzy controller (ASOSMFC) to improve its level control performance. Parameters are important factor to the control effect. Experimented results indicate that owing to the unsymmetry of two subsystems of volumetric type bending machine, the adaptation gains of two subsystems must be different, to prevent the system divergent adaptation gains must be positive. Sliding plane gain will influence time response, synchronism and oscillation in steady state.
The Simulation Study for Energy-Absorbing Properties of the Railway Vehicle’s Anti-Climber with Different Vertical Offsets
Authors: Wang Wen Bin , Jiang Jun Jie , Wang Qian
Published: March 2013

Anti-climber is one of the most important passive safety devices for railway vehicles. Based on the non-linear finite element method, properties of the anti-climber with different vertical offsets are simulated by the software LS-DYNA. The force-displacement curve is mainly analyzed, and the energy absorbed by the anti-climber is also calculated in order to assess the properties. At last, an improvement method with a cross structure inside the anti-climber is designed for the offset problem and is proved effective by the simulation.
Research on Data Reports Based on Experimentation & Test of Traffic Engineering
Authors: Lu Yu Hong , Gong Bai Yan , Ren Juan
Published: March 2013

By analyzing the quality elements of traffic engineering, the spectra structure of quality characteristics of all levels of projects and parameters for traffic engineering will be established. Combined with the requirements of JT/T828-2012, the compilation method of experimentation & test data reports can be determined. It will promote the level of management standardization and refinement for experimentation & test organization, and will further improve the accuracy and objectivity of experimentation & test data.
Finite Deformation Analysis and Numerical Simulation of Arterial Wall
Authors: Sang Jian Bing , Sun Li Fang , Ge Lan Lan , Zhang Zhong Kai , Zhang Dong Ling , Jing Yuan
Published: March 2013

Based on Gent model, a new strain energy function is developed for the description of mechanical response of arterial wall, which fulfills the requirement that in the rigid condition and will thansform into Gent model when . By utilizing the modified strain energy function, inflation of arterial wall by internal pressure is researched. Stress distribution through the deformed arterial wall at cylindrical system is achieved based finite deformation theory. In order to analyze the deformation and stress field of arterial wall at different blood pressure, a user subroutine is programmed to implement the modified strain energy function from Gent into the program of MSC.Marc,. The results show that maximum radial stress and maximum circumferential stress all appear at inside wall. In the meanwhile, radial stress and circumferential stress become smaller along the wall thickness from inside to outside. It can seen the results of finite element analysis of arterial wall are accordant to the result of theoretical analysis, which approves that theoretical analysis is correct.
Cell Separation Through Ascending and Descending Curvilinear Microchannels
Authors: Wewala W.A.H.S.S. , Kasi Jafar Khan , Kasi Ajab Khan , Afzulpurkar Nitin
Published: March 2013

Separation of rare cells such as fetal cells from blood has potential importance in disease investigation and prevention. In this paper we report a new method of cancer cells separation from patient’s blood by inertial focusing technique. A design and simulation of ascending and descending curvilinear microchannels for separation of particles resembling cancer cells have been presented. Computational fluid dynamics (CFD) design and simulation of ascending and descending microchannels is used for cell separation. The simulation was carried out in two stages including focusing and separation. The ascending curvilinear channel design demonstrated favorable focusing and separation. Separation with 100% purity and efficiency of the unwanted particle was achieved at Reynolds number (Re) = 8.50 and velocity 0.105m/s. Reynolds number 9.25 and 10.06 with corresponding velocities 0.115 m/s and 0.125 m/s were also investigated for cell seperation. In case of descending curvilinear channel, cell separation was not good. Considering cancer cells size about 15 µm, our proposed ascending microchannel is a good candidate for cancer cells separation from blood.
The Study of Marine Gas Turbine Power System Simulation Software Development
Authors: Cao Lei , Li Shu Ying , Wang Zhi Tao
Published: March 2013

This software is aimed at providing engineering design personnel who are engaged in marine gas turbine power system design and performance optimization with a software platform for concentrated design and management. First, the mathematical model of the sub-shaft gas turbine was established using volume inertia and rotor inertia method. And then the relative non-linear simulation module base of all components was built based on MATLAB/Simulink. Second, in order to develop this extensible simulation software for the study on the marine gas turbine overall performance, a human-computer interface was cultivated too based on MATLAB/GUI. This software provides the functions of analyzing dynamic performance of the marine gas turbine power system in both on-design and off-design operating conditions. It offers engineering design personnel an extensible and useful GUI platform in gas turbine system design and performance optimization.
Experimental Study of Atomization Characteristic of Air Blast Atomizer
Authors: Liu Kai , Sun Li Yan
Published: March 2013

Experimental investigation results of the fuel injector group in a heavy-duty gas turbine are presented. Atomization characteristic has great impact about combustion, inflame, temperature field of outlet. Obtained atomization characteristic about spray particle size and spray angle using LDV/PDPA system, determined dimension of injector group. On the basis of these tests, the combustion testing of the injector group in the flame tube is made, its every targets are arrived in the design requirements. This has demonstrated: the test systems and test methods are practical, feasible and reliable. These experimental data have provided the reliable basis for the injector group design and development.
Short-Term Wind Speed Forecasting Based on Optimizated Support Vector Machine
Authors: Sun Yu , Li Ling Ling , Huang Xiao Song , Duan Chao Ying
Published: March 2013

To avoid the impact which is caused by the characteristics of the random fluctuations of the wind speed to grid-connected wind power generation system, accurately prediction of short-term wind speed is needed. This paper designed a combination prediction model which used the theories of wavelet transformation and support vector machine (SVM). This improved the model’s prediction accuracy through the method of achiving change character in wind speed sequences in different scales by wavelet transform and optimizing the parameters of support vector machines through the improved particle swarm algorithm. The model showed great generalization ability and high prediction accuracy through the experiment. The lowest root-mean-square error of 200 samples was up to 0.0932 and the model’s effect was much stronger than the BP neural network prediction model. It provided an effective method for predicting wind speed.
Simulation of Toothpaste Flavor Transportation in Oral and Nasal Cavity during Respiration
Authors: Zhang Ge , Yang Hong Chun , Wei Wen Ding
Published: March 2013

This study aimed at investigating the perception of toothpaste flavors during tooth brushing. The 3D geometrical model of human oral cavity and nasal cavity was built. The dynamic concentration of investigated flavor limonene under certain tidal volume was obtained with computational fluid dynamics (CFD) technology. It was found that the designed taste could be reached within half minutes for limonene. According to the data within 180s, the taste did not changed significantly during the whole brushing time. Tidal volume was crucial for the perception for the toothpaste.
A CO2 Laser Camera
Authors: Lee Kuang Chyi , Hwu Chen Chuan , Thomson Gavin
Published: March 2013

This paper develops a CO2laser camera by using an ARM embedded system with a CCD camera. The power controller, embedded on an FPGA chip, controls laser cutting depth by modifying the DPWM power controller for a CO2laser machine. The relationship model between feed rate, laser power and cutting depth was trained by the adaptive neural fuzzy inference system (ANFIS). Laser power output was determined by the grayscale level in the image from CCD camera to reproduce a bitmap image in a 2.5D engraving. The maximum laser cutting depth was 4mm, and the feed rate varied between 10mm/s and 80 mm/s. Laser power was less than 48W. The precision for the cutting depth in the model was less than 0.036mm. The precision for the actual cutting depth of the laser was within 0.044mm. Implementation of the model improved the precision of the laser cutting machine to within the range ±0.05mm.
Study of V/H/J of Pointing-Lapping for Hypoid Gears
Authors: Yan Hua Ru , Xiao Miao Xin
Published: March 2013

Pointing-lapping is a lapping way for modifying tooth surface defects of hypoid gears. For numerical control, V/H/J calculation principle of pointing-lapping of hypoid gears is introduced. According to mesh relations and coordinate relations, 8 nonlinear equations are formed on the basis of mesh theory of hypoid gears. V/H/J can be got by solving the nonlinear equations, which can be finished easily by computation program. The accuracy of the calculation principle has been proved by tooth surface contact pattern test in Y9550 roll checking machine.
Finite Element Analysis and Optimal Design of Frictional Roller
Authors: Meng Qing Rui , Hu Zhi Peng , Quan Jie
Published: March 2013

First a 3D model for frictional roller of endless-rope winch was established with Pro/E software. And then the model was imported into finite element software named ANSYS Workbench, by which, the stress and deformation distribution of frictional roller could be acquired after meshing and loading. Next by making use of the Design Explorer module of ANSYS Workbench software, the paper analyzed the sensitivity of the major structure parameters which influence the roller strength. On the foundation of sensitivity analysis, these parameters were optimized to make the structure of the frictional roller more reasonable and meeting the design requirements.