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IEEE International Conference on Communications

作者： Cristina Merola Alessandro Guidotti Marco Di Renzo Fortunato Santucci Giovanni E. Corazza University of L'Aquila Dept. of Electrical and Information Engineering Center of Excellence DEWS University of Bologna Dept. of Electronics Computer Engineering and Systems (DEIS) L2S UMR 8506 CNRS - SUPELEC - Univ Paris-Sud Laboratory of Signals and Systems (L2S) French National Center for Scientific Research (CNRS) Ecole Superieure d'Electricite (SUPELEC) University of Paris-Sud XI (UPS)

ISBN: (纸本)9781457720529

In this paper, we introduce a new framework to compute the Average Symbol Error Probability (ASEP) of an intended wireless communication system subject to network interference and noise. The interfering nodes are assumed to be randomly distributed in the 2D Euclidean plane according to a homogeneous Poisson point process. Our framework is applicable to performance prediction and optimization of, e.g., emerging heterogeneous cellular and cognitive radio networks. More specifically, we move from and generalize the semi-analytical framework recently introduced by Pinto and Win [1], and develop a new mathematical model which offers a simple single-integral expression of the ASEP under very general channel and interference conditions. The framework is exact, avoids Monte Carlo methods for its computation, and is applicable to asynchronous and synchronous scenarios. Our numerical examples show that both setups have almost the same performance, and that the ASEP in the presence of synchronous interference is a very tight upper-bound of the ASEP in the presence of asynchronous interference. This is a relevant result, as we show in this paper that in the former case all parameters of interest can be computed in closed-form. Our analytical derivation is substantiated through extensive Monte Carlo simulations.

关键词： Error probability Monte Carlo technique Noise Frameworks interference interference Asynchronous ABER PINTO performance prediction point operation presences

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Refounding software engineering: The Semat initiative (Invited presentation)

Refounding software engineering: The Semat initiative (Invit...

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34th International Conference on Software engineering, ICSE 2012

作者： Kajko-Mattsson, Mira Striewe, Michael Goedicke, Michael Jacobson, Ivar Spence, Ian Huang, Shihong McMahon, Paul MacIsaac, Bruce Elvesæter, Brian Berre, Arne J. Seymour, Ed ICT/KTH Royal Institute of Technology Stockholm Sweden University of Duisburg-Essen Essen Germany Ivar Jacobson Int'l. United Kingdom Dept. of Computer and Electrical Engineering and Computer Science Florida Atlantic University Boca Raton FL United States PEM Systems Binghamton NY United States RMC Method Content IBM San Jose CA United States SINTEF Oslo Norway Business and Applications Services Fujitsu 22 Baker Street London W1U 3BW United Kingdom

ISBN: (纸本)9781467310673

The new software engineering initiative, Semat, is in the process of developing a kernel for software engineering that stands on a solid theoretical basis. So far, it has suggested a set of kernel elements for software engineering and basic language constructs for defining the elements and their usage. This paper describes a session during which Semat results and status will be presented. The presentation will be followed by a discussion panel. © 2012 IEEE.

关键词： Software engineering

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Event-based Patient Motion Detection and Compensation in Image-Guided Robotics

Event-based Patient Motion Detection and Compensation in Ima...

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IEEE RAS & EMBS International Conference on Biomedical Robotics and Biomechatronics

作者： Tamas Haidegger Peter Kazanzides Balazs Benyo Zoltan Benyo Dept. of Control Engineering and Information Technology Budapest University of Technology and Economics Johns Hopkins University Center for Computer-Integrated Surgical Systems and Technology

ISBN: (纸本)9781457711992

We report a generalized approach to deal with patient motion in robotic image-guided surgery, along with in silico and dry laboratory tests on a neurosurgical robot setup. External patient motion events (excluding physiological motion) can occur during surgery despite body fixation, and can endanger the outcome of the surgery, as they invalidate the registration between the robot and the patient. The core of the compensation algorithm is to rely on the combination of the robot joint encoders, tracking data and the internal coordinate frame of the intra-operative navigation system to ensure accurate execution of the pre-operative plan. The method allows for the continuous correction of the registration through identifying the actual surgical event in the operating room. From the control point of view, the intra-operative events have been categorized as robot motion, camera motion, patient motion and the combinations of these. The registration update is based on the use of the most reliable reference frame and extending-window averaging to compensate for the occurred patient motion. Simulation results were performed on a generic image-guided robot model, and on a skull base surgery robot. Patient motion events were detected in 80% of the cases, which already leads to a gradual improvement of the procedure. The proposed structure allows for a more generic, probability-based handling of the operating room events that may lead to safer and more accurate surgical treatment in the future.

关键词： Patient Motion Artifact compensated control point Registration Robot Operating rooms Surgery REFERENCE FRAMES

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Torque Improvement of Three-phases Full Bridge Converter based Switched Reluctance Motor with DC Assisted Winding

Torque Improvement of Three-phases Full Bridge Converter bas...

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International Conference on electrical Machines and systems

作者： K. Tungpimolrut S. Kachapornkul P. Jitkreeyarn P. Somsiri N. Chayopitak C. Akira Advanced Automation and Electronics Research Unit National Electronics and Computer Technology Center Dept. of Electrical and Electronics Engineering Tokyo Institute of Technology

ISBN: (纸本)9781467323277

In this paper a torque capacity improvement method for the three-phase full bridge converter based switched reluctance motor (SRM) drive is investigated. The concept of DC assisted winding operated with ordinary bipolar AC winding for the conventional two-phase excitation is applied and compared to the previously proposed two-phase excitation drive system. The optimal switching angle and amplitude of the current in DC winding are identified. The improvement on torque versus speed characteristic curve of tested machine, 1.5 kW, 3-phase, 6-stator-pole and 4-rotor-pole SRM is verified by the experimental results.

关键词： Switched Reluctance Motors Three-phase full bridge converter Two-phase excitation Torque capacity

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Collaborative path planning for multiple unmanned aerial vehicles in dynamic environments

Collaborative path planning for multiple unmanned aerial veh...

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2011 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2011

作者： Habib, Durdana Khan, Shoab A. Jamal, Habibullah Dept. of Electrical Engineering National University of Computer and Emerging Sciences Islamabad Pakistan Dept. of Computer Systems Engineering National University of Sciences and Technology Rawalpindi Pakistan Dept. of Electrical Engineering University of Engineering and Technology Taxila Pakistan

ISBN: (纸本)9781457708947

This paper addresses the problem of path planning for a group of Unmanned Aerial Vehicles (UAVs) to carry out a reconnaissance mission given regions of interest (ROI) within a specified geographic area. Employing teams of UAVs may reduce the time to accomplish a required mission however the problem becomes one of optimal resource allocation and is NP-hard. Traversal through a partially known environment is challenging as information acquired by the sensors may reveal obstacles and/or high risk zones. Thus plans may need to be recomputed in real-time as the mission proceeds. UAVs may be lost or may suffer significant damage during such missions. Therefore multiple UAVs have better chance of completing a mission in the face of failures and obstacles if surviving agents can reconfigure their path plans based on shared information and move on to complete the mission. The proposed solution must be such that m UAVs start from multiple source locations to visit n targets and return to a set of destination locations such that (1) each target is visited exactly by one of the chosen uavs (2) the total distance traveled by the group is minimized and (3) the number of targets that each uav visits may not be less than K or greater than L. © 2011 IEEE.

关键词： Motion planning

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Minimum reactive power tracking with MPPT of converter excited induction generator for wind power generation

Minimum reactive power tracking with MPPT of converter excit...

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IEEE International Electric Machines and Drives Conference

作者： Kimura, Noriyuki Nakatani, Kenichi Morizane, Toshimitsu Nishida, Yasuyuki Electrical and Electronic Systems Engineering Dept. Osaka Institute of Technology Osaka Japan Dept. of Electric Electronics and Computer Engineering Chiba Institute of Technology Chiba Japan

ISBN: (纸本)9781457700613

The wind power generation system connected to DC system, such as the DC transmission from the offshore generators or the battery charging system, has been investigated. The proposed system uses induction generator (IG) with the voltage source converter (VSC) and the diode rectifier in parallel to reduce the cost of the system. Sometimes a permanent magnet type synchronous generator (PMSG) is installed and the maximum power point tracking (MPPT) ability is its advantage. The cost of IG is much lower than SG with permanent magnets and is possible to have the MPPT control by using VSC for excitation. We also propose to minimize the reactive power consumption of IG to decrease the rating of the VSC. The effectiveness of the proposed control for the wind power generation system was verified by the simulation. © 2011 IEEE.

关键词： Reactive power

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics): Preface

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2012年 7248 LNCS卷 VI-XI页

作者： Di Chio, Cecilia Agapitos, Alexandros Cagnoni, Stefano Cotta, Carlos De Vega, F. Fernández Di Caro, Gianni Drechsler, Rolf Ekárt, Anikó Esparcia-Alcázar, Anna I. Farooq, Muddassar Langdon, William B. Merelo-Guervós, Juan-J. Preuss, Mike Richter, Hendrik Silva, Sara Simões, Anabela Squillero, Giovanni Tarantino, Ernesto Tettamanzi, Andrea G.B. Togelius, Julian Urqhart, Neil Uyar, A. Şima Yannakakis, Georgios N. University College Dublin Ireland Dept. of Computer Engineering University of Parma Italy Dept. Lenguajes Y Ciencias de la Computación University of Málaga Spain University of Extremadura Spain Lugano Switzerland Cyber-Physical Systems DFKI Bremen Germany Computer Science Aston University Birmingham United Kingdom S2 Grupo Spain National University of Computer and Emerging Sciences Islamabad Pakistan University College London United Kingdom Departamento de Arquitectura Y Tecnología de Computadores Universidad de Granada Spain TU Dortmund University Germany Faculty of Electrical Engineering and Information Technology HTWK Leipzig University of Applied Sciences Germany INESC-ID Lisboa Portugal Coimbra Institute of Engineering Coimbra Polytechnic Coimbra Portugal Politecnico di Torino Italy Institute for High Performance Computing and Networking Italy Università degli Studi di Milano Italy Center for Computer Games Research IT University of Copenhagen Denmark Centre for Emergent Computing Edinburgh Napier University United Kingdom Dept. of Computer Engineering Istanbul Technical University Turkey

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H∞ Filtering For Fractional Order systems

H∞ Filtering For Fractional Order Systems

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第五届国际自动控制联合会分数阶导数及其应用会议

作者： Sang-Chul Lee Yan Li YangQuan Chen Hyo-Sung Ahn School of Mechatronics Gwangju Institute of Science and Technology(GIST) 261 Cheomdan-gwagiro Buk-gu Gwangju 500-712 Korea School of Control Science and Engineering Shandong University 17923Jingshi Road Jinan 250061 Shandong Province P. R. China Dept. of Electrical & Computer Engineering Center for Self-Organizing& Intelligent Systems (CSOIS) Utah State University 4120 Old Main HillLogan UT 84322 USA

In this paper,H∞ filtering problem is studied for Fractional Order systems(FOSs).Based on the extended real lemma,H∞ constraint and Lyapunov stability conditions are formulated by an Linear Matrix Inequalities(LMI).Using some manipulations on LMI,solvability and existence conditions of the H∞filter is given in the LMI form,and it will be seen that numerical

关键词： Filtering For Fractional Order systems

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Reduction of circulating current of double converter configuration for additional regeneration

Reduction of circulating current of double converter configu...

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8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia

作者： Kimura, Noriyuki Morizane, Toshimitsu Nishida, Yasuyuki Electrical and Electronic Systems Engineering Dept Osaka Institute of Technology Osaka Japan Dept. of Electric Electronics and Computer Engineering Chiba Institute of Technology Chiba Japan

This paper presents the analysis and solution about the circulating current appeared in the double converter configuration used to add the regenerative ability for a conventional diode rectifier. © 2011 IEEE.

ISBN: (纸本)9781612849560

关键词： Bandpass filters

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Robust flux balance analysis of metabolic networks

Robust flux balance analysis of metabolic networks

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作者： Zavlanos, Michael M. Julius, A. Agung Dept. of Mechanical Engineering Stevens Institute of Technology Hoboken NJ 07030 United States Dept. of Electrical Computer and Systems Engineering Rensselaer Polytechnic Institute Troy NY 12180 United States

ISBN: (纸本)9781457700804

Metabolic networks describe the set of biochemical reactions and regulatory interactions of metabolism that govern the phenotypical properties of a cell. Analysis of such networks is critical not only to promote biological knowledge, but also in drug discovery, where it can be used to identify and knockout the targeted pathways. Flux Balance Analysis (FBA) has been widely used to study metabolic networks. This powerful technique employs the reaction stoichiometries and reversibility constraints along with experimental measurements of phenotypical properties of the cell, e.g., biomass composition or ATP synthesis, to compute the fluxes of metabolites that are best manifested in the cell. Although FBA has been shown to satisfactorily capture cell behavior, its performance could be significantly improved if measurement uncertainty is introduced in the models. In this paper we propose Robust Flux Balance Analysis (RFBA) to determine optimal fluxes of metabolites for all phenotypical measurements in a given uncertainty set. We derive a least squares bi-criterion approximation of the uncertain problem and, using the S-procedure and tools from matrix analysis, we show that this is equivalent to a semidefinite program that can be solved optimally using available techniques. We illustrate our approach on synthetic metabolic networks and discuss the effect of regularization on the final solutions. Due to its convex nature, our approach can be applied to genome-scale networks. © 2011 AACC American Automatic Control Council.

关键词： Metabolites

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