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33rd IEEE Conference on computer Communications, IEEE INFOCOM 2014

作者： Tapolcai, János Rónyai, Lajos Hosszu, Éva Ho, Pin-Han Subramaniam, Suresh MTA-BME Future Internet Research Group Budapest University of Technology Hungary Computer and Automation Research Institute Hungarian Academy of Sciences BME Hungary Dept. of Electrical and Computer Engineering University of Waterloo Canada Dept. of Electrical and Computer Engineering George Washington University United States

ISBN: (纸本)9781479933600

Network-wide local unambiguous failure localization (NL-UFL) [1] has been demonstrated as an interesting scenario of monitoring trails (m-trails). It attempts to enable every node to autonomously localize any failure event in the network in a distributed and all-optical manner by inspecting a set of m-trails traversing through the node. This paper investigates the m-trail allocation problem under the NL-UFL scenario by taking each link and node failure event into consideration. Bound analysis is performed using combinatorial group testing (CGT) theory and this is followed by the introduction of a novel heuristic on general topologies. Extensive simulation is conducted to examine the proposed heuristic in terms of the required cover length and the number of m-trails to achieve NL-UFL. © 2014 IEEE.

关键词： group theory

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Stable ℋ∞ controller design based on a novel parameterization of the controller set

Stable ℋ∞ controller design based on a novel parameterizat...

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European control Conference (ECC)

作者： T. Péni Z. Szabó J. Bokor Institute for Computer Science and Control MTA-BME Control Engineering Research Group

This paper proposes a method for improving the LMI-based robust control synthesis. It is well-known that the design of a ℋ ∞ controller can be formulated as a two-step procedure. In the first step the performance level is minimized and the closed loop Lyapunov function is determined. The second step is the construction of the controller. The currently available implementations of this procedure generate only one controller candidate and leave no room for additional tuning between the design steps. If the controller obtained is not acceptable, (e.g. it is unstable) then the designer has to modify the original control problem (changing, e.g., the performance weighting functions) and then has to perform the entire synthesis again. This paper presents a novel parameterization of all controllers corresponding to the performance level and Lyapunov function determined in the first design step. This parameterizaton makes it possible to construct tuning algorithms for finding the “best” controller in the parameterized set. Now, this paper focuses only on the stability of the controller and provides an iterative tuning algorithm, which finds a stable controller having poles on the prescribed domain of the left half complex plane. The applicability of the proposed algorithm is demonstrated on a simple robust control problem.

关键词： Linear matrix inequalities Tuning Symmetric matrices Optimization Algorithm design and analysis Eigenvalues and eigenfunctions Output feedback

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Piecewise Polynomial Policy Iterations for Synthesis of Optimal control Laws in Input-Saturated Systems

Piecewise Polynomial Policy Iterations for Synthesis of Opti...

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American control Conference

作者： Simone Baldi Giorgio Valmorbida Antonis Papachristodoulou Elias B. Kosmatopoulos Delft Center for Systems and Control Delft University of Technology Delft 2628CD The Netherlands Department of Engineering Science Control Group University of Oxford Parks Road Oxford OX1 3PJ U.K. Dept. of Electrical and Computer Engineering Democritus University of Thrace Xanthi 67100 Greece and Informatics & Telematics Institute Center for Research and Technology Hellas (ITI-CERTH) Thessaloniki 57001 Greece

ISBN: (纸本)9781479917730

This work proposes a policy iteration procedure for the synthesis of optimal and globally stabilizing control policies for Linear Time Invariant (LTI) Asymptotically Null-controllable with Bounded Inputs (ANCBI) systems. This class includes systems with eigenvalues on the imaginary axis (possibly repeated) but no pole with positive real part. The proposed policy iteration relies on a class of piecewise quadratic Lyapunov functions which is non-differentiable, but continuous, and polynomial in both the state and the deadzone functions of the input signals. The second step of the policy iteration is based on a piecewise control policy improvement. An important aspect of the proposed piecewise policy is that at each step of the iteration the computed policy is globally stabilizing and the existence of an improving value function is guaranteed as well. The solution to the inequalities which is required to hold at each step of the policy iteration, is obtained by solving Sum-of-Squares Programs (SOSP) that can be efficiently implemented with semidefinite programming (SDP) solvers.

关键词： iterative methods Policies Piecewise control law synthesis Polynomial control strategy Liapunov function Bounded

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Integrated robust control design for in-wheel-motor vehicles 35th

Integrated robust control design for in-wheel-motor vehicles

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35th FISITA World Automotive Congress, 2014

作者： Gáspár, Péter Bokor, József Szabó, Zoltán Fülep, Tímea Szauter, Ferenc András, Mihály Systems and Control Laboratory Institute for Computer Science and Control Budapest Hungary Systems and Control Laboratory MTA SZTAKI MTA-BME Control Engineering Research Group Budapest Hungary Research Center of Vehicle Industry Széchenyi István University Győr Hungary Department of Control for Transportation and Vehicle Systems Budapest University of Technology and Economics Budapest Hungary

The paper proposes a multi-layer supervisory architecture for integrated control systems in road vehicles. The role of the supervisor is to coordinate active control components and provide priority among them. The supervisor has information about the current operational mode of the vehicle and it is able to make decisions about the necessary interventions into the vehicle components and guarantee the reconfigurable operation of the vehicle. The decisions of the supervisor are propagated to the lower layers through predefined interfaces encoded as suitable scheduling signals. The contribution of the paper is the application of the LPV methodology in a design case study in which an integrated control of four wheel independently-actuated electric vehicle with active steering system is developed. © 2014, FISITA. All rights reserved.

关键词： Robust control

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A self-learning TLBO based dynamic economic/environmental dispatch considering multiple plug-in electric vehicle loads

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Journal of Modern Power Systems and Clean Energy 2014年第4期2卷 298-307页

作者： Zhile YANG Kang LI Qun NIU Yusheng XUE Aoife FOLEY School of Electrical Electronics and Computer ScienceQueen’s University BelfastBelfast BT95AHUK Shanghai Key Laboratory of Power Station Automation Technology School of Mechatronic Engineering and AutomationShanghai UniversityShanghai 200072China NARI Group Corporation(State Grid Electric Power Research Institute) Nanjing 211106China School of Mechanical and Aerospace Engineering Queen’s UniversityBelfast BT95AHUK

Economic and environmental load dispatch aims to determine the amount of electricity generated from power plants to meet load demand while minimizing fossil fuel costs and air pollution emissions subject to operational and licensing *** two scheduling problems are commonly formulated with non-smooth cost functions respectively considering various effects and constraints,such as the valve point effect,power balance and ramprate *** expected increase in plug-in electric vehicles is likely to see a significant impact on the power system due to high charging power consumption and significant uncertainty in charging *** this paper,multiple electric vehicle charging profiles are comparatively integrated into a 24-hour load demand in an economic and environment dispatch ***-learning teaching-learning based optimization(TLBO)is employed to solve the non-convex non-linear dispatch *** results onwell-known benchmark functions,as well as test systems with different scales of generation units show the significance of the new scheduling method.

关键词： Economic dispatch Environmental dispatch Plug-in electric vehicle Self-learning Teaching learning based optimization Peak charging Off-peak charging Stochastic charging

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Noise Induced Feature Enhancement and Object Segmentation of Forward Looking SONAR Image

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Procedia Technology 2014年 14卷 125-132页

作者： Soma Banerjee Ranjit Ray Sankar Nath Shome Goutam Sanyal Department of Computer Science and Engineering National Institute of Technology Durgapur India Robotics & Automation Group CSIR-Central Mechanical Engineering Research Institute Durgapur India

Autonomous Underwater Vehicles (AUVs) are generally relying on Forward Looking SONAR ( FLS ) data to detect obstacles in front of the vehicle. Presence of obstacle is detected based on the amplitude of the echoed signal sensed by hydrophones. But acoustic signal loses its energy primarily due to transmission loss, absorption and scattering. Due to this, water column image of SONAR is of low contrast and noisy. So an effective preprocessing technique must be employed. This paper is concerned with denoising and contrast enhancement of the FLS image to fortify detection of obstacles. Adaptive dynamic stochastic resonance (SR) has been applied in wavelet domain to enhance the regions of interest (ROI), preceded by the application of Lee filtering to suppress speckle noise. Finally, C-Means clustering based segmentation has been adopted to extract the ROI to calculate the position, size and centre of gravity (CoG) of the obstacle. The proposed algorithm is validated through experimentation carried out on FLS images of Tritech mini king SONAR.

关键词： FLS Speckle Noise DWT Stochastic Resonance C-mean Clustering

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A framework for flight guidance along air streams 6

A framework for flight guidance along air streams

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6th IEEE Chinese Guidance, Navigation and control Conference, CGNCC 2014

作者： Wahid, Mastura Ab Bouadi, Hakim Revoredo, Teo Mora-Camino, Felix MAIAA Lab Civil Aviation Institute-ENAC University of Toulouse France Electrical Engineering Department Military Academy of Cherchell Algeria Department of Electronics and Telecommunication Engineering State University of Rio de Janeiro Brazil Automation and Flight Control at ENAC Automation Research Group at MAAIA Toulouse University France

ISBN: (纸本)9781479946990

With the current performances of aeronautical communication, navigation and surveillance systems, free flight and traffic management through trajectory negotiation become a reality. However, the adoption of free flight in congested airspace leads to an increase of the number of potential traffic conflicts which are solved by diverting aircraft from their original flight plan, limiting the benefits of free flight. In this paper it is proposed to organize traffic in congested airspace along main air streams which are characterized by a flyable 3D track for modern transportation aircraft. Then aircraft position can be given in a local space indexed cylindrical coordinates system which should ease the management of traffic separation and surveillance. This should result in the need to develop new 3D space indexed guidance modes to perform lateral trajectory tracking while insuring time separation between successive aircraft. © 2014 IEEE.

关键词： Aircraft detection

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The Chinese ‘‘HumanFlesh’’ Web:the first decade and beyond

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Chinese Science Bulletin 2014年第26期59卷 3352-3361页

作者： Fei-Yue Wang Daniel Zeng Qingpeng Zhang James A. Hendler Jianping Cao The State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Department of Management Information Systems The University of Arizona Tucson Department of Systems Engineering and Engineering Management City University of Hong Kong Tetherless World Constellation Department of Computer Science Rensselaer Polytechnic Institute Troy The Research Center for Computational Experiments and Parallel Systems National University of Defense Technology

Human flesh search(HFS), a Web-enabled crowdsourcing phenomenon, originated in China a decade ago. In this article, we present the first comprehensive empirical analysis of HFS, focusing on the scope of HFS activities, the patterns of HFS crowd collaboration process, and the characteristics of HFS participant networks. A survey of HFS participants was conducted to provide an in-depth understanding of the HFS community and various factors that motivate these participants to contribute. This article also advocates a new stream of Web science and social computing research that will be important in predicting the future growth and use of the World Wide Web.

关键词：中国人网址肉 Web功能实证分析参与者共同体万维网

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Hierarchical robust control for in-wheel motor vehicles 14

Hierarchical robust control for in-wheel motor vehicles

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14th Mini Conference on Vehicle System Dynamics, Identification and Anomalies, VSDIA 2014

作者： Gáspár, Péter Bokor, József Szabó, Zoltán Fülep, Tímea Szauter, Ferenc Mihály, András Systems and Control Laboratory Institute for Computer Science and Control Kende u. 13-15 Budapest1111 Hungary Institute for Computer Science and Control MTA-BME Control Engineering Research Group Kende u. 13-15 Budapest1111 Hungary Research Center of Vehicle Industry Széchenyi István University Gyor9024 Hungary Department of Control for Transportation and Vehicle Systems Budapest University of Technology and Economics Budapest Hungary

ISBN: (纸本)9789633131862

The paper proposes the design of an integrated vehicle control system for in-wheel electric vehicle, which is able to track road geometry with a predefined reference velocity. In the design the lateral and longitudinal dynamics are combined using the in-wheel motors and the steering system. The design methodology of the hierarchical control is proposed. The required control signals are calculated by applying high-level controllers, which are designed using a robust control method. For the control design the model is augmented with weighting functions specified by the performance demands. The actuators generating the necessary control signals in order to achieve the requirements for which low-level tracking controllers are designed.

关键词： Robust control

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A hyperbolic view on robust control

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IFAC Proceedings Volumes 2014年第3期47卷 718-723页

作者： Z. Szabó J. Bokor T. Vámos Institute for Computer Science and Control Hungarian Academy of Sciences Hungary (Tel: +36-1-279-6171 Institute for Computer Science and Control Hungarian Academy of Sciences Hungary MTA-BME Control Engineering Research Group

The intention of the paper is to demonstrate the beauty of geometric interpretations in robust control. We emphasize Klein's approach, i.e., the view in which geometry should be defined as the study of transformations and of the objects that transformations leave unchanged, or invariant. We demonstrate through the examples of the basic control tasks that a natural framework to formulate different control problems is the world that contains as points the equivalence classes determined by the stabilizable plants and whose natural motions are the Möbius transforms. Transformations of certain hyperbolic spaces put light into the relations of the different approaches, provide a common background of robust control design techniques and suggest a unified strategy for problem solutions. Besides the educative value a merit of the presentation for control engineers might be a unified view on the robust control problems that reveals the main structure of the problem at hand and give a skeleton for the algorithmic development.

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