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作者： Butka, Peter Pócs, Jozef Pócsová, Jana Department of Cybernetics and Artificial Intelligence Faculty of Electrical Engineering and Informatics Technical University of Košice Letná 9 Košice04200 Slovakia Department of Algebra and Geometry Palacký University Olomouc 17. Listopadu 12 Olomouc77146 Czech Republic Mathematical Institute Slovak Academy of Sciences Grešákova 6 Košice04001 Slovakia BERG Faculty Institute of Control and Informatization of Production Processes Technical University of Košice Boženy Němcovej 3 Košice04384 Slovakia

In this paper we present the study on the usage of distributed version of the algorithm for generalized one-sided concept lattices (GOSCL), which provides a special case for fuzzy version of data analysis approach called formal concept analysis (FCA). The methods of this type create the conceptual model of the input data based on the theory of concept lattices and were successfully applied in several domains. GOSCL is able to create one-sided concept lattices for data tables with different attribute types processed as fuzzy sets. One of the problems with the creation of FCA-based models is their computational complexity. In order to reduce the computation times, we have designed the distributed version of the algorithm for GOSCL. The algorithm is able to work well especially for data where the number of newly generated concepts is reduced, i.e., for sparse input data tables which are often used in domains like text-mining and information retrieval. Therefore, we present the experimental results on sparse data tables in order to show the applicability of the algorithm on the generated data and the selected text-mining datasets.

关键词： Formal concept analysis

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Stabilization of nonlinear system with input delay and biased sinusoidal disturbance 19

Stabilization of nonlinear system with input delay and biase...

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Pyrkin, Anton A. Bobtsov, Alexey A. Kolyubin, Sergey A. Vedyakov, Alexey A. Borisov, Oleg I. Gromov, Vladislav S. Department of Control Systems and Informatics ITMO University St. Petersburg Russia Laboratory Control of Complex Systems Institute for Problems of Mechanical Engineering St. Petersburg Russia Department of Engineering Cybernetics Norwegian University of Science and Technology TrondheimNO-7491 Norway

ISBN: (纸本)9783902823625

We present a new stabilization approach for nonlinear plants with a long input delay. The stabilization problem is complicated by the influence of an uncertain biased sinusoidal disturbance. The problem of control design is solved with using measurable state variables. The adaptive scheme allows to identify the frequency and other parameters of the external disturbance that are used in a rejection loop. The main result provides delay compensation for a class of nonlinear systems and asymptotic stability for the closed-loop system. © IFAC.

关键词： System stability

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Adaptive controller for linear plant with parametric uncertainties, input delay and unknown disturbance 19

Adaptive controller for linear plant with parametric uncerta...

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Pyrkin, Anton A. Bobtsov, Alexey A. Aranovskiy, Stanislav V. Kolyubin, Sergey A. Gromov, Vladislav S. Department of Control Systems and Informatics ITMO University St.-Petersburg Russia Laboratory Control of Complex Systems Institute for Problems of Mechanical Engineering St.-Petersburg Russia Department of Engineering Cybernetics Norwegian University of Science and Technology TrondheimNO-7491 Norway

ISBN: (纸本)9783902823625

We present a new stabilization approach for unstable linear plants with long input delay, unknown parameters and disturbance. The predictor-based algorithm providing plant identification and stabilization is proposed. Also the extension is considered with estimation and cancellation of an unknown disturbance. A numerical examples are given to illustrate the efficiency of our adaptive controller. © IFAC.

关键词： Disturbance rejection

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Influence of the Manipulation of the Polytopic Tensor Product Model Representation on the control Performance of LMI Based Design

Influence of the Manipulation of the Polytopic Tensor Produc...

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IEEE International Conference on Systems, Man and Cybernetics

作者： Alexandra Szöllósi Péter Baranyi Péter Várlaki Hungarian Academy of Sciences and Budapest University of Technology and Economics Department of Telecommunications and Media Informatics 3D Internet based Control and Communications Laboratory Computer and Automation Research Institute 3D Internet based Control and Communications Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences Multidisciplinary Doctoral School of Engineering Sciences Szechenyi István University

ISBN: (纸本)9781479986989

The paper studies the effect of the manipulation of the polytopic TP model representation of a given quasi Linear Parameter Varying (qLPV) state-space model on the control performance results. The investigated model in the case study consists of the extended, Stribeck friction included three degrees of-freedom version of the aero elastic wing section of the Nonlinear Aero elastic Test Apparatus (NATA) model. The investigation is carried out through the Tensor Product (TP) model transformation based control Design Framework, which bridges the manipulation of the polytopic representation and Linear Matrix Inequality (LMI) based control design methods. Different TP model representations of the given qLPV model are derived: a TP model representation with a sum-normalized non-negative (SNNN) convex hull, a TP model representation with a close to-normal (CNO) convex hull and interpolated TP model representations. Upon these representations Linear Matrix Inequality based design methods are applied to attain the controller and observer system components. The resulting control systems are tested through numerical simulation and their performance are compared and evaluated. The paper presents results, where the interpolated representations lead to better control performance results, which indicates, that the manipulation of the polytopic TP model representation may lead to further potential optimization possibilities. Also, this shows, that in order to find the optimal solution the manipulation is a necessary and important step.

关键词： Mathematical model Numerical models Observers control design Tensile stress Interpolation Numerical simulation

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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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Educational Innovation: Interaction and Relationship Inside A Sub-Module

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Procedia - Social and Behavioral Sciences 2015年 186卷 395-400页

作者： Fernando Oterino-Echavarri Jose Manuel Lopez-Guede Ekaitz Zulueta Manuel Graña Department of Electronics University College of Engineering of Vitoria Basque Country University (UPV/EHU) C/Nieves Cano 12 01006 Vitoria-Gasteiz Spain Department of Systems Engineering and Automatic Control University College of Engineering of Vitoria Basque Country University (UPV/EHU) C/Nieves Cano 12 01006 Vitoria-Gasteiz Spain Computational Intelligence Group Basque Country University (UPV/EHU) Department of Computer Science and Artificial Intelligence Faculty of Informatics Basque Country University (UPV/EHU) Paseo Manuel de Lardizabal 1 20018 Donostia-San Sebastián Spain

In this paper authors will expose a work developed with the aim to submit an educational innovation project proposal to a competitive call for Educational Innovation Projects 2013-2015 of the Education Advisory Service of the Basque Country University (UPV/EHU, Spain). This project is being carried out in the Computer Structure and Computer Architecture sub-module of the Degree in Computer Management and Information Systems engineering of the University College of engineering of Vitoria-Gasteiz, University of the Basque Country (UPV/EHU). The project is based on the active learning, more specifically, on cooperative learning. In this paper we have given deeper insight the dependencies between all the subjects belonging to the analyzed sub-module, which is composed of two subjects named Computer Structure and Computer Architecture. We have included in such analysis a previous subject named Principles of Digital Systems Design, which does not belong to that sub-module, but plays an important role in the acquisition of the knowledge and competencies of the two previously referenced subjects.

关键词： Active Learning Cooperative Learning Computer engineering Computer Structure Computer Architecture

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Study of modern control methodologies applied to tumor growth under angiogenic inhibition 19

Study of modern control methodologies applied to tumor growt...

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Szeles, Annamária Drexler, Dániel A. Sápi, Johanna Harmati, István Kovács, Levente Department of Control Engineering and Information Technology Budapest University of Technology and Economics Budapest Hungary John von Neumann Faculty of Informatics Obuda University Budapest Hungary

ISBN: (纸本)9783902823625

Cancer treatment is one of the most important research fields of modern medicine. In the last decades, targeted molecular therapies showed prosperous results. These treatments achieve tumor regression with limited side-effects. Mathematical models were posed which describe the dynamics of tumor regression under the applied control. The current paper investigates antiangiogenic therapy, which inhibits the tumor to grow its own endothelial capillaries and thus inhibits tumor to grow over a certain size. Many different control approaches were elaborated and published since the model formulation was posed. The aim of this paper is to give an overview of these methods and results, and to review the work carried out by the authors. © IFAC.

关键词： Biomedical systems Flat control LQ regulation Robust control Tumor therapy

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World Congress Integrative Medicine & Health 2017: part two Berlin, Germany. 3-5 May 2017 Abstracts

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BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017年第SUPPL 1期17卷 317-317页

作者： [Anonymous] National Institute of Complementary Medicine Western Sydney University Sydney Australia Department of General Practice University of Melbourne Melbourne Australia School of Rehabilitation Therapy Queens University Ontario Canada School of Health and Biomedical Sciences RMIT University Melbourne Australia School of Public Health and Preventive Medicine Monash University Melbourne Australia NAFKAM UiT The Arctic University of Norway Tromsø 9019 Norway Department of Psychology University of Sheffield Sheffield S1 1HD UK Department of Community Medicine UiT The Arctic University of Norway Tromsø 9019 Norway Institue of General Practice Goethe University Frankfurt Frankfurt 60590 Germany Department of General Practice University of Tübingen Tübingen Germany Med.-pharm. Information/Klinische Forschung WALA Heilmittel GmbH Bad Boll/ Eckwälden 73087 Germany Ressortleitung Wissenschaft WALA Heilmittel GmbH Bad Boll/Eckwälden 73087 Germany University of Minnnesota Minneapolis 55455 MN USA Minneapolis College of Art and Design Minneapolis MN USA Duke University Durham NC USA Caring Bridge Minneapolis MN USA University of Minnesota Minneapolis 55455 MN USA Phytomedicines Supply and Development Center Innovation & Development Bayer Consumer Health Steigerwald Arzneimittelwerk GmbH Darmstadt 68526 Germany University Medicine of Rostock Rostock 18055 Germany Primary Care and Population Sciences University of Southampton Southampton UK Psychology University of Southampton Southampton UK Faculty of Health University of Technology Sydney Sydney 2007 Australia st Department of Pathology and Experimental Cancer Research Semmelweis University Budapest 1085 Hungary University of Alberta Edmonton Canada Parker University Dallas TX USA Canadian Memorial Chiropractic College Toronto Canada Anglo-European College of Chiropractic Bournemouth UK University of Calgary Calgary Canada University of Toronto Toronto Canada University of Hawaii at Manoa Honolulu Hawai’

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Distributed Design of Locally Stabilizing controllers for Large-Scale Networked Linear Systems

Distributed Design of Locally Stabilizing Controllers for La...

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Conference on control Applications

作者： Tomonori Sadamoto Takayuki Ishizaki Jun-ichi Imura Bart Besselink Henrik Sandberg Karl Henrik Johansson Department of Mechanical and Environmental Informatics Graduate School of Information Science and Engineering Tokyo Institute of Technology 2-12-1 Meguro Tokyo Japan School of Electrical Engineering Automatic Control Royal Institute of Technology (KTH) SE-100 44 Stockholm Sweden Japan Science and Technology Agency CREST 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan

ISBN: (纸本)9781479977970

In this paper, we consider designing locally stabilizing controllers, each of which stabilizes each disconnected subsystem, in a distributed manner for large-scale networked linear systems. To this end, we design a low-dimensional hierarchical distributed compensator such that the L_2-performance of the closed-loop system improves as long as that of the locally stabilizing controllers improves. We solve a controller reduction problem where the approximation error of the low-dimensional compensator gets better as long as the performance of the locally stabilizing controllers improves, while preserving the hierarchical distributed structure of the original compensator. Finally, we demonstrate the efficiency of the proposed method through a numerical example of a power network.

关键词： distributed efficiency proposed

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Computer-aided geometric sensitivity analysis of plane trusses with a square grid topology

Periodica polytechnica Electrical engineering and computer s...

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Periodica polytechnica Electrical engineering and computer science 2014年第2期58卷 55-68页

作者： Dóbé, Péter Domokos, Gábor Department of Control Engineering and Information Technology Faculty of Electrical Engineering and Informatics Budapest University of Technology and Economics Magyar tudósok krt 2. BudapestH-1117 Hungary Department of Mechanics Materials and Structures Faculty of Architecture Budapest University of Technology and Economics Muegyetem rkp. 3. BudapestH-1111 Hungary

A recent theory assigns a single scalar 0 ≤ r ≤ 1 to pin-jointed plane trusses, characterising their geometric sensitivity with respect to small displacements of individual joints. Here we investigate how r is varying in n x m minimally rigid quadrangulations and find that nontrivial patterns correspond both to maximal and minimal values of r. © 2014, Technical University of Budapest. All rights reserved.

关键词： Sensitivity analysis

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