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Regression Test on the Rotational Speed between Two Loads as the Preparation for Braking System

Journal of Physics: Conference Series 2013年第1期423卷

作者： B S R Purwanti F Yusivar I Garniwa M K Student of Doctoral Program University of Indonesia Electrical Engineering Department DTE-FTUI INA Lecturer on the Electronic Department Polytechnique State of Jakarta Depok INA University of Indonesia Electrical Engineering Department DTE-FTUI INA

This paper is preparing the mathematic model of braking control, continuously of determination the error (e), delta error (de) of speed reduction [9]. Load-1 and Load-2 are driven by an electric motor located on the same shaft. Both loads are driven clock wise (CW), counter clock wise (CCW) by an asynchronous three-phase motor (M3). The mass of each load is also differentiated to simulate slip phenomena. Rotational speed of M3 is equal to Load-1, detected by Sensor-1, while speed rotation of Load-2 is detected by Sensor-2. The rotation for Load-1 and Load-2 can be adjusted on several position Hj (j = 1, 2, 3). Once Load-1 and Load-2 reach a constant speed, current source will be disconnected. Speed reduction from (ω±1475 rpm) to stagnant (ω=0 rpm) on Load-1 and Load-2 is considered time function. Data collected from both load (ω (t)) known as e, de; on each position of Hj. It uses covariance analysis to make sure that both loads are concurrent with each other against time difference. The objective of this research is to determine slip phenomena of speed reduction of each load. The expectations are to generate smoother braking and minimize the time needed when implemented with ANFIS.

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A conceptual approach to a hybrid network simulation model

A conceptual approach to a hybrid network simulation model

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Education and Training Modeling and Simulation 2012, ETMS 2012, Part of the 2012 Autumn Simulation Multiconference, AutumnSim 2012

作者： Robledo, Luis F. Sepulveda, Jose Archer, Sandra University of Central Florida Modeling and Simulation Doctoral Program United States University of Central Florida Industrial Engineering Department United States University of Central Florida University Analysis Planning Support United States

ISBN: (纸本)9781622760992

Network simulation has gathered enormous interest lately as it is seen as the new approach to deal with complexity. The growth of social networks is widely known, and its scale and complexity define them as complex systems either for representation or analysis. Networks mean connection between individuals, organizations, etc. Complexity is inherent to this concept and, for its representation and analysis;we need a confident and precise methodology. Here is where simulation methods and techniques play a major role. Network topology and the dynamic behavior of nodes, their constant change, the influence that individual network components have, the weight assignment according to influence, dynamic changes of components, and the spreading and diffusion of information deserve a careful representation. Simulation has become the necessary tool for representation and prediction of complex systems. It can provide with the means for covering all levels, general or strategic, to specific or operational, In this paper, we take a glance of some types of networks, their definition, use and structure. We analyze different types of simulations and ways we can represent these complex networks. We present a case study based on a University Enrollment Model and a hybrid simulation approach to deal with it.

关键词： Complex networks

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Biogas Laminar Burning Velocity and Flammability Characteristics in Spark Ignited Premix Combustion

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Journal of Physics: Conference Series 2013年第1期423卷

作者： Willyanto Anggono I N G Wardana M Lawes K J Hughes Slamet Wahyudi Nurkholis Hamidi Akihiro Hayakawa Petra Christian University/ Mechanical Engineering Department Surabaya Indonesia The University of Leeds/ School of Mechanical Engineering Leeds UK Kyushu University/Department of Mechanical Engineering Fukuoka Japan Brawijaya University/ Doctoral Program Mechanical Engineering Department Malang Indonesia The University of Leeds/ School of Process Environmental and Materials Engineering Leeds UK

Spherically expanding flames propagating at constant pressure were employed to determine the laminar burning velocity and flammability characteristics of biogas-air mixtures in premixed combustion to uncover the fundamental flame propagation characteristics of a new alternative and renewable fuel. The results are compared with those from a methane-air flame. Biogas is a sustainable and renewable fuel that is produced in digestion facilities. The composition of biogas discussed in this paper consists of 66.4% methane, 30.6% carbon dioxide and 3% nitrogen. Burning velocity was measured at various equivalence ratios () using a photographic technique in a high pressure fan-stirred bomb, the initial condition being at room temperature and atmospheric pressure. The flame for methane-air mixtures propagates from =0.6 till =1.3. The flame at ≥ 1.4 does not propagate because the combustion reaction is quenched by the larger mass of fuel. At ≤0.5, it does not propagate as well since the heat of reaction is insufficient to burn the mixtures. The flame for biogas–air mixtures propagates in a narrower range, that is from =0.6 to =1.2. Different from the methane flame, the biogas flame does not propagate at ≥1.3 because the heat absorbed by inhibitors strengthens the quenching effect by the larger mass of fuel. As in the methane flame, the biogas flame at ≤0.5 does not propagate. This shows that the effect of inhibitors in extremely lean mixtures is small. Compared to a methane-air mixture, the flammability characteristic (flammable region) of biogas becomes narrower in the presence of inhibitors (carbon dioxide and nitrogen) and the presence of inhibitors causes a reduction in the laminar burning velocity. The inhibitor gases work more effectively at rich mixtures because the rich biogas-air mixtures have a higher fraction of carbon dioxide and nitrogen components compared to the lean biogas-air mixtures.

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Role of delamination fracture for enhanced impact toughness in 0.05 %P doped high strength steel with ultrafine elongated grain structure

Role of delamination fracture for enhanced impact toughness ...

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7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011

作者： Jafari, Meysam Kimura, Yuuji Tsuzaki, Kaneaki Doctoral Program in Materials Science and Engineering Graduate School of Pure and Applied Science University of Tsukuba 1-2-1 Sengen Tsukuba Ibaraki 305-0047 Japan Structural Metals Center National Institute for Materials Science 1-2-1 Sengen Tsukuba Ibaraki 305-0047 Japan

ISBN: (纸本)9783037853047

Ultrafine elongated grain (UFEG) structures with strong 〈110〉// rolling direction (RD) fiber deformation texture were produced by warm caliber-rolling at 773 K, namely tempforming in the 1200 MPa-class medium-carbon low-alloy steel with phosphorous (P) contents of 0.001 and 0.053 mass%. Charpy impact tests were performed at temperature range of -196 to 150 °C on the UFEG structure. Regardless of P content, high upper shelf energy about 145 J and a very low ductile to brittle transition temperature (DBTT) of around -175 °C were obtained. P segregation embrittlement completely disappeared in the 0.053 %P steel and both steels showed ductile fracture on the planes normal to RD at temperature range of -150 to 150 °C. The main reason for the high upper shelf energy and very low DBTT in the 0.053 %P steel would be delamination fracture along RD when both 0.001 and 0.053 %P steels showed quite similar microstructures including texture. Since the occurrence of delamination requires relatively weak interfaces or planes, P segregated to the ferrite grain boundaries and interfaces of cementite particles-ferrite matrix and made them feasible paths for crack branching and consequently delamination occurred. We showed in this work the advantage of delamination (crack arrester-type) on the high absorbed energy obtained by 0.053 %P steel in comparison with 0.001 %P steel. © (2012) Trans Tech Publications, Switzerland.

关键词： Fracture toughness

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Reversible JPEG Data Hiding Based on EMD

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通讯和计算机（中英文版） 2012年第10期9卷 1135-1141页

作者： Wen-Chung Kuo Shao-Hung Kuo Department of Computer Science and Information Engineering National Yunlin University of Science & Technology Yunlin 672 Taiwan Graduate School of Engineering Science and Technology Doctoral Program National Yunlin University of Science and Technology Yunlin 640 Taiwan

As the rapid growth of smart phone technology, people have a lot of digital image information such as digital photos or videos. Both data hiding and data compression are very important technologies in image processing field. On the overview, it seems that there is no relationship between data hiding and data compression because data hiding mechanisms focus on information security and data compression mechanisms emphasize the compression ratio. However, the more secret data is embedded, the more capacity the stego image increases. Actually, they are closely related. Until now, there are many literatures to discuss the secret data how to be embedded into the media image and keeps the original capacity as soon as possible. In this paper, a reversible data hiding scheme based on EMD data hiding and JPEG (Joint Picture Experts Group) compression technology will be proposed. According to experimental results, the authors can prove that our proposed scheme maintains high embedding capacity, security and good compression ratio.

关键词：数据隐藏 JPEG EMD 可逆数字图像信息数据嵌入压缩技术数据压缩

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Real-Time Fall Detecting System Using a Tri-axial Accelerometer for Home Care

Real-Time Fall Detecting System Using a Tri-axial Accelerome...

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International Conference on Biomedical engineering and Biotechnology (iCBEB)

作者： Chien-Cheng Lan Ya-Hsin Hsueh Rong-Yuan Hu Graduate School of Electronic Engineering Doctoral Program National Yunlin University of Science and Technology Yunlin Taiwan Department of Electronic Engineering National Yunlin University of Science and Technology Yunlin Taiwan

There has been a considerable increase in the population proportion of senior people among global population. Fall often happens among these senior people, which is also the leading cause of their death. A real-time fall detection system may help us to detect fall events among elderly people in time and reduce the overall casualty rate. This paper proposed a home-based, real-time fall detection system that not only can distinguish up to 4 different kinds of fall events (forward, backward, rightward and leftward), but is also portable, low-cost and with high accuracy rate. The system includes a real-time fall detection band, a home server, and GSM instant messaging function which can transfer fall alert, send emergency help messages.

关键词： Real time systems Acceleration Accelerometers Graphical user interfaces Servers Support vector machines Accuracy

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Using Kalman filtering to analyze oscillometric blood pressure waveforms

Using Kalman filtering to analyze oscillometric blood pressu...

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IEEE International Workshop on Medical Measurement and Applications (MEMEA)

作者： José Antonio de la O Serna Wendy Van Moer Kurt Barbé Electrical Engineering Doctoral Program Autonomous University of Nuevo León Nuevo Leon Mexico Department of Fundamental Electricity and Instrumentation Vrije Universiteit Brussel Brussels Belgium

Measuring the blood pressure as accurately as possible can save a lot of human lives. Hence, it is very important to find an optimal method to determine the systolic and diastolic pressures out of the measured oscillometric blood pressure waveform. Recently, studies have been showing that, by working in the frequency domain, outperforming results could be obtained. Using the digital Taylor-Fourier transform (DTFT) even allows separating the breathing and cardiac activity that is present in the oscillometric waveform. Furthermore, an estimate of the frequency fluctuation can easily be obtained. In this paper, we will investigate whether or not a Kalman filtering implementation can provide better results than the DTFT analysis. In theory both approaches should be equally performing. Both techniques will be compared on measured oscillometric waveforms. Even if the alternating Kalman filter does not excel the DTFT algorithm in interharmonic rejection, it offers interesting signal decomposition alternatives.

关键词： Kalman filters Harmonic analysis Power harmonic filters Blood pressure Frequency estimation Vectors Frequency response

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Phase transition behavior in microcantilevers coated with M 1-phase VO2 and M2-phase VO2:Cr thin films

Phase transition behavior in microcantilevers coated with M ...

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作者： Rúa, Armando Cabrera, Rafmag Coy, Horacio Merced, Emmanuelle Sepúlveda, Nelson Fernández, Félix E. Department of Physics University of Puerto Rico Mayagüez 00681-9000 Puerto Rico Doctoral Program in Physics Graduate Center City University of New York New York 10016 United States Applied Materials Group Electrical and Computer Engineering Department Michigan State University E. Lansing MI 48824 United States

Silicon microcantilevers were coated by pulsed laser deposition with vanadium dioxide (VO2) (monoclinic M1 phase) and V 1-xCrxO2 with x near 0.024 (monoclinic M 2 phase), and their mechanical characteristics were studied as a function of temperature through the films' insulator-to-metal transition (IMT). The undoped VO2 films grew with (011)M1 planes parallel to the substrate, while Cr-doped VO2 films grew oriented with (201)M2 and (2 01)M2 planes parallel to the substrate. In both cases, the films transformed reversibly through the IMT to the tetragonal (rutile, R) phase, with film (110)R planes oriented parallel to the substrate. The fundamental resonant frequencies of the cantilevers were measured as the temperature was cycled from ambient temperature, through the IMT, and up to 100 °C. Very high resonant frequency changes were observed through the transition for both types of samples, with increases during heating of over 11 and over 15 for the cantilevers coated with pure and Cr-doped VO2, respectively. From the resonant frequencies measured at room temperature for the bare and coated cantilevers in each case, the effective Young's moduli of the films were determined. The values obtained, assuming bulk densities for the films, are 156 ± 7.5 GPa for VO2 (M1 phase) and 102 ± 3 GPa for Cr-doped VO2 (M2 phase). Strong curvature changes during the transition to the R phase were also observed for cantilevers coated with both types of films, but these were significantly higher in the case for the Cr-doped film. Curvature changes for temperature ranges outside the IMT region were small and attributed to differential thermal expansion between film and silicon substrate. From measured cantilever tip displacements in this post-transition range-for the undoped VO 2-coated microcantilevers-a rough estimate of 110 GPa was obtained for the effective Young's modulus for R-phase VO2. The substantially higher changes in resonant frequency and curvature for V1-xCr xO2-coated cant

关键词： Thin films

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Effect of musical tones in auditory perception analysis using nonlinear model

Effect of musical tones in auditory perception analysis usin...

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Biomedical engineering International Conference (BMEiCON)

作者： Pongphan Pongpanitanont Wichian Sittiprapaporn Warakorn Charoensuk Department of Biomedical Engineering Faculty of Engineering Mahidol University Nakhon Pathom Thailand Department of Electrical Engineering Faculty of Engineering Mahidol University Nakhon Pathom Thailand Office of the Doctoral Degree Program Studies in Education/Faculty of Education Mahasarakham University Mahasarakham Thailand

ISBN: (纸本)9781467348904

This paper studies the application of the non-linear model (ANN, ANFIS). ANN and ANFIS were used to fit a Blood-Oxygen Level Dependent (BOLD) signal with design architecture. A model proposes to define region of interest (ROI) in brain fMRI images. The result shows the ANFIS model can be represent to fit the BOLD data better than ANN. Three paradigms were stimulated at difference issue activation in specific parameter (activation time, duration and signal strength). In this case a higher frequency and amplitude paradigm has stimulated on the brain area activation faster and more frequently.

关键词： Education Analytical models Oxygen Biomedical imaging Image resolution Equations Mathematical model

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Case Study of Service Oriented Enterprise Architecture Framework

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Computer Technology and Application 2012年第3期3卷 240-249页

作者： Nassir Dino Awel Dico Dida Midekso Worku Alemu Software Engineering Track IT Doctoral Program Addis A baba University Addis A baba P. O. BOX 1176 Ethiopia Graduate Programme HiLCoE School of Computer Science ＆ Technology Addis Ababa P.O.BOX 33465 Ethiopia

Many organizations have now adopted Service Oriented Architecture （SOA） as an architectural style to help them with architecture, design and implementation of their core services and systems. Most of these organizations are challenged in integrating SOA style with their overall Enterprise Architecture work. This framework links an SOA style with the Enterprise Architecture （EA） methodologies to help organizations organize their SOA effort as a key part of their Enterprise Architecture. The case study demonstrates the implementation of architecture goal with organization vision in service oriented organizational structure using services that align Business with Technology. The framework is validated and has reserved the privileges of SOA and EA.

关键词： SOA （service oriented architecture） EA （enterprise architecture） service oriented enterprise （SOE） SOE strategicarchitecture SOE domain architecture SOE solution architecture SOE lifecycle service oriented enterprise architecture （SOEA）framework.

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