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15th International Conference on Discovery Science, DS 2012

作者： Makino, Shunsuke Shimada, Takaharu Hirata, Kouichi Yonezawa, Kouki Ito, Kimihito Graduate School of Computer Science and Systems Engineering Kyushu Institute of Technology Kawazu 680-4 Iizuka 820-8502 Japan Department of Artificial Intelligence Kyushu Institute of Technology Kawazu 680-4 Iizuka 820-8502 Japan Department of Computer Bioscience Nagahama Institute of Bio-Science and Technology Tamura 1266 Nagahama 526-0829 Japan Division of Bioinformatics Research Center for Zoonosis Control Hokkaido University North 20 West 10 Sapporo 001-0020 Japan

ISBN: (纸本)9783642334917

In this paper, first we introduce a label-based closest-neighbor trimming method to trim a phylogenetic tree built from nucleotide sequences according to the labels of leaves. Next, by replacing the indices of nucleotide sequences as labels of leaves with the nucleotides occurring in a position, we formulate a trim distance between two positions in nucleotide sequences as the LCA-preserving distance between the trimmed phylogenetic trees according to nucleotides occurring in the positions. Finally, we apply the trim distance to compare pandemic influenza A (H1N1) viruses with non-pandemic ones. © 2012 Springer-Verlag Berlin Heidelberg.

关键词： Nucleotides

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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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Optimal Charging control for Electric Vehicles in Smart Microgrids with Renewable Energy Sources

Optimal Charging Control for Electric Vehicles in Smart Micr...

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IEEE Vehicular Technology Conference

作者： Li Zhu F. Richard Yu Bin Ning Tao Tang State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University P.R. China Department of Systems and Computer Engineering Carleton University Ottawa ON Canada

ISBN: (纸本)9781467309899

There is growing interest in plug-in electric vehicles (EVs). Charging EVs from smart microgrids fueled by renewable energy resources is becoming a popular green approach. Although some works have been done about renewable energy sources and EVs in smart microgrids, the stochastic characteristics and the dynamic interplay between these two important green solutions should be carefully considered. In this paper, we study the charging policies in smart microgrids with EVs and renewable energy sources. Based on the renewable energy sources states, battery states, and the number of charging EVs, an optimal charging policy is obtained to maximize the energy utilization with service availability constraints. We formulate the optimal charging problem as a stochastic decision process. Simulation results are presented to show that the proposed scheme can improve the service availability for EVs in microgrids fueled by renewable energy sources.

关键词： proposed scheme microgrids fueled renewable energy Renewable energy renewable energy sources Electric vehicles optimal charging Smart grids Health Services Accessibility Energy sources Charge control energy utilisation CHARGING(ACCOUNTTNG) charging Renewable energy resources

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Agent-based cyber control strategy design for resilient control systems: Concepts, architecture and methodologies

Agent-based cyber control strategy design for resilient cont...

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International Symposium on Resilient control systems, ISRCS

作者： Craig Rieger Quanyan Zhu Tamer Başar Instrumentation Control & Intelligent Systems Idaho National Laboratory Idaho USA Coordinated Science Laboratory and Department of Electrical and Computer Engineering University of Illinois at Urbana-Champaign Urbana IL

The implementation of automated regulatory control has been around since the middle of the last century through analog means. It has allowed engineers to operate the plant more consistently by focusing on overall operations and settings instead of individual monitoring of local instruments (inside and outside of a control room). A similar approach is proposed for cyber security, where current border-protection designs have been inherited from information technology developments that lack consideration of the high-reliability, high consequence nature of industrial control systems. Instead of an independent development, however, an integrated approach is taken to develop a holistic understanding of performance. This performance takes shape inside a multi-agent design, which provides a notional context to model highly decentralized and complex industrial process control systems, the nervous system of critical infrastructure. The resulting strategy will provide a framework for researching solutions to security and unrecognized interdependency concerns with industrial control systems.

关键词： control systems computer security Sensors Process control Software control theory

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Reverse engineering of TopHat: Splice Junction Mapper for Improving Computational Aspect

Reverse Engineering of TopHat: Splice Junction Mapper for Im...

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International Conference on Intelligent systems, Modelling and Simulation (ISMS)

作者： Olivier Terzo Lorenzo Mossucca Andrea Acquaviva Francesco Abate Elisa Ficarra Rosalba Provenzano Infrastructure and Systems for Advanced Computing (IS4AC) Istituto Superiore Mario Boella Torino Italy Department of Control and Computer Engineering Politecnico di Torino Torino Italy

TopHat is a fast splice junction mapper for Next Generation Sequencing analysis, a technology for functional genomic research. Next Generation Sequencing technology allows more accurate analysis increasing data to elaborate, this opens to new challenges in terms of development of tools and computational infrastructures. We present a solution that cover aspects both software and hardware, the first one, after a reverse engineering phase, provides an improvement of algorithm of TopHat making it parallelizable, the second aspect is an implementation of an hybrid infrastructure: grid and virtual grid computing. Moreover the system allows to have a multi sample environment and is able to process automatically totally transparent to user.

关键词： Bioinformatics Genomics DNA Junctions Software RNA

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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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Output-feedback control of Nonlinear Bilateral Teleoperators

Output-feedback Control of Nonlinear Bilateral Teleoperators

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American control Conference

作者： Ioannis Sarras Emmanuel Nuno Michel Kinnaert Luis Basanez Control Engineering and Systems Analysis Department (SAAS) at the Universite Libre de Bruxelles (ULB) Brussels 1050 Belgium Department of Computer Science at the University of Guadalajara. Guadalajara 44430 Mexico Institute of Industrial and Control Engineering (IOC) at the Technical University of Catalonia (UPC) Barcelona 08028 Spain

ISBN: (纸本)9781457710957

The output-feedback design problem for a bilateral teleoperator scheme is considered. The recently proposed Immersion and Invariance (I&I) observer is used to obtain an exponentially convergent estimate of the unmeasured velocities. Moreover, it is proven that when this observer is interconnected to the nonlinear teleoperator together with a Proportional plus damping (P+d) controller, the overall system is globally stable. Finally, in the case when the human operator and the environment do not exert forces on the local and remote manipulator, respectively, global asymptotic convergence to zero of the velocities and of the position tracking error is achieved. These results are obtained by introducing two important design modifications ensuring the explicit derivation of the observer dynamics and that the interconnected system inherits the same stability properties as in the full-measurement case. The theoretical results are illustrated with simulations using local and remote two degree-of-freedom nonlinear manipulators.

关键词： Observers Humans Teleoperators Manipulator dynamics Convergence Stability analysis

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Acoustic Impedance Matching using Loop Shaping PID controller Design

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IFAC Proceedings Volumes 2012年第3期45卷 323-328页

作者： Michail T. Pelegrinis Simon A. Pope Steve Daley Department of Automatic Control and Systems Engineering University of Sheffield. Mappin Street Sheffield S1 3JD UK. Institute of Sound and Vibration Research University of Southampton. Highfield Southampton SO17 1BJ UK.

For several decades Proportional-Integral-Derivative control (PID) has been successfully used for a wide variety of industrial processes and remains the most used method. Recent work concerning the tuning of PID control coefficients has been proven to provide both robust and near-optimal performance using a Frequency Loop Shaping (FLS) procedure. The FLS tuning method minimizes the difference between the actual and the desired target loop transfer function. Such a control design procedure is ideal for problems in which the desired closed loop frequency response is predetermined over a specific frequency band. This paper explores the possibilities and trade-offs of applying the FLS control strategy in Active Noise control (ANC) problems. The use of the FLS design is ideal for the problem of noise suppression in ducts, because the required acoustic impedance for the elimination of reflecting sound waves in the one-dimensional case is well defined. Hence, by controlling locally the reflecting boundary structure, a global cancelation of the undesired noise can be accomplished.

关键词： PID Frequency Loop Shaping Active Noise control

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Fault tolerant adaptive estimation of nonlinear processes using redundant measurements

Fault tolerant adaptive estimation of nonlinear processes us...

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Mediterranean Conference on control and Automation (MED)

作者： M. Miranda A. Edelmayer Laboratory of Unit Operations Department of Chemical Engineering Faculty of Engineering University of Los Andes Merida Venezuela Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences (ATOMKI) Budapest Hungary

This paper presents a dual layer approach for robust fault tolerant estimation of nonlinear processes using a combined adaptive extended Kalman filter and fault detection and filter reconfiguration. From the one hand, the filter is made robust in face of environment uncertainty using adaptive filtering. To this end, the filter identifies the measurement covariance by means of recursive estimation, upon which the adaptation relies, to suppress the effect of sporadic variations in the quality of measurements as well as compensates for incipient sensor faults. From the other hand, fault monitoring is continuously applied to the filter's innovation in an attempt to initiate filter reconfiguration when the adaptation mechanism alone is not able to overcome the failure situation. The discussion of the results is embedded in the application framework of state estimation of a batch distillation process.

关键词： Temperature measurement Mathematical model Estimation Technological innovation Noise Fault tolerance Fault tolerant systems

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Predictive modeling and retaining connectivity for mobile wireless communication network

Predictive modeling and retaining connectivity for mobile wi...

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IEEE Conference on Technologies for Homeland Security

作者： Yuri Shtessel Christopher Edwards Prathyush Menon Alan Cosby Alex Bordetsky Department of Electrical and Computer Engineering University of Alabama in Huntsville Huntsville AL USA Department of Engineering University of Leicester Leicester UK Centre for Systems Dynamics and Control University of Exeter UK Department of Information Technology Naval Postgraduate School Monterey USA

The problem of maintaining connectivity in a mobile communication network is considered. The agents consist of two classes: one class of agents, which is termed primary mission agents, performs surveillance operations that may or may not be coordinated efforts. The second class of agents, which is termed relay agents, is controlled to maintain the connectivity. Two control algorithms are proposed to retain the connectivity of the network. Sliding mode observers are employed to predict the trajectories of the primary mission agents, when only their positions are known from blue force messages, and this information is used to construct state dependent graphs encapsulating the measure of connectivity. An optimal model predictive control is employed to develop the control policies for the relay agents to maximize connectivity. Also, the hybrid system approach is used to retain the connectivity of the communication network. The efficacy of the proposed control algorithms is confirmed on a case study of Riverine detection and interdiction operation.

关键词： Mathematical model Equations Prediction algorithms Observers Mobile communication Laplace equations Predictive models

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