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Graphene-Based All-Solid-State Supercapacitor with Ionic Liquid Gel Polymer Electrolyte

MRS Online Proceedings Library (OPL) 2012年第1期1440卷 mrss12-1440-o04-05-mrss12-1440-o04-05页

作者： G. P. Pandey A. C. Rastogi Center for Autonomous Solar Power (CASP) Binghamton University State University of New York Binghamton NY 13902 USA Department of Electrical and Computer Engineering Binghamton University State University of New York Binghamton NY 13902 USA

Graphene-based all-solid-state supercapacitors the using ionic liquid gel polymer electrolyte have been fabricated and characterized. The gel polymer electrolyte has been prepared by immobilizing ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate (BMIBF4) with poly(vinylidene fluoride-hexafluoropropylene). Cyclic voltammetry studies show highly capacitive behavior under fast scan rates. Impedance analysis show nominal charge transfer and ion diffusion at pores related resistance contributions. The graphene-based solid-state supercapacitor shows optimum capacitance of 80 mF cm-2 (equivalent to the single electrode specific capacitance of 76 F g-1). This corresponded to the specific energy of 7.4 Wh kg-1 and specific power of 4.5 kW kg-1. The supercapacitor cell shows stable cyclic performances for up to 5000 cycles and possibly beyond.

关键词： ionic conductor C storage

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A three-phase to three-phase matrix converter prototype

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controle y Automacao 2012年第3期23卷 247-262页

作者： De Oliveira Filho, Milton E. Sguarezi Filho, Alfeu J. Ruppert, Ernesto Mobility Engineering Center Federal University of Santa Catarina - UFSC Joinville-SC Brazil Center of Engineering Modeling and Applied Social Sciences - CECS Federal University of ABC - UFABC Santo André-SP Brazil Department of Systems and Energy Control Electrical and Computer Engineering University of Campinas Campinas-SP Brazil

This paper presents some implementation details of a three-phase to three-phase matrix converter prototype. The bidirectional semiconductor switches were built using discrete IGBTs and fast diodes. Design aspects such as protection against overvoltage and short-circuit, commutation process of bi-directional switches, and input filter are addressed in this paper.

关键词： Matrix converters

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Ship tracking control based on linear active disturbance rejection control

Ship tracking control based on linear active disturbance rej...

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International Conference on Intelligent control and Information Processing (ICICIP)

作者： Ronghui Li Tieshan Li Qinling Zheng Qiang Li Navigaion College of Dalian Maritime University Dalian China Center for Advanced Control Technologies Department of Electrical Computer Engineering Cleveland State University Cleveland OH USA

Owing to ship's high inertia, strong time lag, non-linearity and under-actuated characteristics, as well as sustaining external disturbances frequently, designing a high performance ship tracking controller is still one of the most important research topics of ship motion control. Active Disturbance Rejection control (ADRC) is proved to be very effective control method because it is independent of mathematical model of the plant and can compensate the internal and external disturbances dynamically. This paper investigates the applications of ADRC in ship motion tracking control and presents the design method of ADRC controller appropriate for ship tracking control. Firstly, ship motion mathematical model is introduced briefly and the linear ADRC (LADRC) is analyzed. Then considering the nonlinear ship track design model as a third order plant after utilizing variable substitution, a LADRC controller is designed by using fourth order linear extended state observer (LESO). At last, the simulation is performed. Simulation results show that the controller has a good tracking performance and disturbance rejection ability and is robust to the ship motion nonlinear characteristic and the external disturbances. The tracking process is fast, smooth and minor energy consumption.

关键词： Marine vehicles Mathematical model Observers Tracking Equations Educational institutions Robustness

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Fractional-order circuit elements with memory

Fractional-order circuit elements with memory

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2012 13th International Carpathian control Conference, ICCC 2012

作者： Petráš, Ivo Chen, YangQuan Institute of Control and Informatization of Production Processes BERG Faculty Technical University of Košice B. Němcovej 3 04200 Košice Slovakia Department of Electrical and Computer Engineering Center for Self-Organizing and Intelligent Systems Utah State University 4120 Old Main Hill Logan UT 84322-4120 United States

ISBN: (纸本)9781457718687

This paper deals with the fractional-order memristive, memcapacitative, and meminductive systems and their utilization in design of the new circuits with memory. We provide a mathematical description of such systems by using a technique of the fractional calculus. Some possible applications of "mem" systems are mentioned in article as well. © 2012 IEEE.

关键词： Calculations

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Adversarial detection as a zero-sum game

Adversarial detection as a zero-sum game

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IEEE Conference on Decision and control

作者： K. G. Vamvoudakis J. P. Hespanha B. Sinopoli Y. Mo Center for Control Dynamical-systems and Computation (CCDC) University of California Santa Barbara CA USA Electrical and Computer Engineering Department Carnegie Mellon University Pittsburgh PA USA

ISBN: (纸本)9781467320658

We propose a new game theoretic approach to estimate a binary random variable based on a vector of sensor measurements that may be corrupted by an adversary. The problem is formulated as a zero-sum partial information game in which a detector attempts to minimize the probability of error and an attacker attempts to maximize this probability. Explicit mixed policies are computed using the matrix form of the game and exploiting sensor symmetry to reduce complexity and find closed-form solutions.

关键词： Games Estimation Detectors Game theory Vectors Random variables Complexity theory

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An Implementation of Distributed Order PI controller And Its Applications To The Wheeled Service Robot

An Implementation of Distributed Order PI Controller And Its...

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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： Fengyu Zhou Yang Zhao Yan Li YangQuan Chen School of Control Science and Engineering Shandong UniversityJinan 250061 Shandong P.R. China Center for Self-Organizing and Intelligent Systems (CSOIS) Electrical and Computer Engineering Department Utah State University Logan UT 84322 USA

In this paper,a robust distributed order PI controller design method is derived,which tolerates certain system *** theory and implementation of the distributed order operators are discussed in both time and frequency

关键词： controller An Implementation of Distributed Order PI controller And Its Applications To The Wheeled Service Robot Service

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Towards an ontology for autonomous robots

Towards an ontology for autonomous robots

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25th IEEE/RSJ International Conference on Robotics and Intelligent Systems, IROS 2012

作者： Paull, Liam Severac, Gaetan Raffo, Guilherme V. Angel, Julian Mauricio Boley, Harold Durst, Phillip J. Gray, Wendell Habib, Maki Nguyen, Bao Ragavan, S. Veera Saeedi G., Sajad Sanz, Ricardo Seto, Mae Stefanovski, Aleksandar Trentini, Michael Li, Howard COBRA Department of Electrical and Computer Engineering University of New Brunswick Fredericton NB E3B 5A3 Canada ONERA-University of Toulouse France Department of Automation and Systems Federal University of Santa Catarina Brazil Department of Computer Engineering Pontificia Universidad Javeriana Bogot Colombia National Research Council Canada US Army ERDC 3909 Halls Ferry Road Vicksburg MS 39180 United States Mechanical Engineering Department School of Sciences and Engineering American University in Cairo New Cairo Egypt Defence Research and Development Canada-CORA Ottawa ON Canada Monash University Sunway Campus Australia Systems Engineering and Automatic Control Autonomous Systems Laboratory Research Group Universidad Politcnica de Madrid Madrid Spain Defence Research and Development Canada-Atlantic Dartmouth NS Canada Department of Computer Science George Washington University United States Defence R and D Canada-Suffield PO Box 4000 Station Main Medicine Hat AB T1A 8K6 Canada

ISBN: (纸本)9781467317375

The IEEE RAS Ontologies for Robotics and Automation Working Group is dedicated to developing a methodology for knowledge representation and reasoning in robotics and automation. As part of this working group, the autonomous Robots sub-group is tasked with developing ontology modules for autonomous robots. This paper describes the work in progress on the development of ontologies for autonomous systems. For autonomous systems, the focus is on the cooperation, coordination, and communication of multiple unmanned aerial vehicles (UAVs), unmanned ground vehicles (UGVs), and autonomous underwater vehicles (AUVs). The ontologies serve as a framework for working out concepts of employment with multiple vehicles for a variety of operational scenarios with emphasis on collaborative and cooperative missions. © 2012 IEEE.

关键词： Ontology

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Measurement-Device-Independent Quantum Key Distribution

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Physical Review Letters 2012年第13期108卷 130503-130503页

作者： Hoi-Kwong Lo Marcos Curty Bing Qi Center for Quantum Information and Quantum Control Department of Electrical & Computer Engineering and Department of Physics University of Toronto Toronto Ontario M5S 3G4 Canada Escuela de Ingeniería de Telecomunicación Department of Signal Theory and Communications University of Vigo Vigo Pontevedra 36310 Spain

How to remove detector side channel attacks has been a notoriously hard problem in quantum cryptography. Here, we propose a simple solution to this problem—measurement-device-independent quantum key distribution (QKD). It not only removes all detector side channels, but also doubles the secure distance with conventional lasers. Our proposal can be implemented with standard optical components with low detection efficiency and highly lossy channels. In contrast to the previous solution of full device independent QKD, the realization of our idea does not require detectors of near unity detection efficiency in combination with a qubit amplifier (based on teleportation) or a quantum nondemolition measurement of the number of photons in a pulse. Furthermore, its key generation rate is many orders of magnitude higher than that based on full device independent QKD. The results show that long-distance quantum cryptography over say 200 km will remain secure even with seriously flawed detectors.

关键词： QUANTUM cryptography SIGNAL detection PHOTON detectors QUANTUM teleportation LIGHT sources LASER measurement

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Interpolation of Orientation Distribution Functions (ODFs) in Q-ball Imaging

Interpolation of Orientation Distribution Functions (ODFs) i...

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Iranian Conference of Biomedical engineering

作者： Maryam Afzali Emad Fatemizadeh Hamid Soltanian-Zadeh Department of Electrical Engineering Biomedical Signal and Image Processing Laboratory(BiSIPL) Sharif University of Technology Tehran Iran Control and Intelligent Processing Center of Excellence(CIPCE) School of Electrical and Computer Engineering University of Tehran Tehran Iran & Image Analysis Laboratory Radiology Department Henry Ford Health System Detroit Michigan USA

ISBN: (纸本)9781467331289

Diffusion tensor magnetic resonance imaging (DTMRI) is a non-invasive method for investigating the brain white matter structure. It can be used to evaluate fiber bundles in the brain but in the regions with crossing fibers, it fails. To resolve this problem, high angular resolution diffusion imaging (HARDI) with a large number of diffusion encoding directions is used and for reconstruction, the Q-ball method is applied. In this method, orientation distribution function (ODF) of fibers can be calculated. Mathematical models play a crucial role in the field of ODF. For instance, in registering Q-ball images for applications like group analysis or atlas construction, one needs to interpolate ODFs. To this end, principal diffusion directions (PDDs) of each ODF are needed. In this paper, PDDs are defined as vectors that connect the corresponding local maxima of ODF values. Then, ODFs are interpolated using PDDs. The proposed method is evaluated and compared with previous protocols. Experimental results show that the proposed interpolation algorithm preserves the principal direction of fiber tracts without producing any deviations in the tracts. It is shown that changes in the entropy of the interpolated ODFs are almost linear and the bloating effect (blurring of the principal directions) can be removed.

关键词： High angular resolution diffusion imaging (HARDI) Q-ball imaging Orientation distribution function (ODF) Interpolation Principal diffusion direction (PDD)

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Cardiovascular Segmentation Based on Hough Transform and Heuristic Knowledge

Cardiovascular Segmentation Based on Hough Transform and Heu...

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Iranian Conference of Biomedical engineering

作者： Zahra Turani Reza A. Zoroofi Shapoor Shirani Sara. Abkhofte Control and Intelligent Processing Center of Excellence School of Electrical and Computer Engineering University of Tehran Tehran 14395/515 IRAN Department of Radiology School of Medicine Tehran University of Medical Science Tehran IRAN.

ISBN: (纸本)9781467331289

Nowadays cardiovascular diseases are one of the most major causes of mortality. Computed Tomography Angiography (CTA) is a very useful imaging tool for cardiovascular disease diagnosis. So it is important to analyze CTA images well. This paper proposed a new method for fully automatic cardiovascular segmentation based on combination of Hough transform and region growing algorithm. It is a robust method which segments ascending aorta, descending aorta, and left ventricle concurrently. Comparing to the manual method which is done by cardiologist and previous automatic and semi-automatic works, our method is faster, more accurate, and fully automatic. This procedure also can be applied to coronary segmentation. The validation of the acquired cardiovascular images is evaluated by a cardiologist. By evaluating 10 datasets, which contain about 5000 images, the accuracy of the method is 97.3% comparing to the gold standard. Our gold standard is the images segmented by cardiologist. In addition, average elapsed time is 0.18s per image.

关键词： Automatic cardiovascular segmentation Computed Tomography Angiography Hough transform Cardiovascular disease Region growing

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