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American control Conference (ACC)

作者： Pawel Dabkowski Krzysztof Galkowski Eric Rogers Zhonglun Cai Chris T. Freeman Paul L. Lewin Zdenek Hurak Anton Kummert Department of Control Engineering Faculty of Electrical Engineering Czech Technical University Praque Czech Republic Institute of Physiscs Faculty of Physics Astronomy and Informatics Nicolaus Copernicus University Torun Poland University of Wuppertal Germany Institute of Control and Computation Engineering University of Zielona Gora Zielona Gora Poland Electronics and Computer Science University of Southampton Southampton UK Faculty of Electrical Engineering Czech Technical University Czech Republic Faculty of Electrical Information and Media Engineering Communication Theory University of Wuppertal Germany

This paper gives new results on the design and experimental evaluation of an Iterative Learning control (ILC) law in a repetitive process setting. The experimental results given are from a gantry robot facility that has been extensively used in the benchmarking of linear model based ILC designs. An example is also given to demonstrate that this new design offers much superior performance in comparison to some previous designs based on the Roesser model for 2D linear systems.

关键词： Robots State-space methods Asymptotic stability Educational institutions Vectors Stability criteria

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Distributed, mobile, social system for road surface defects detection

Distributed, mobile, social system for road surface defects ...

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5th International Symposium on Computational Intelligence and Intelligent informatics, ISCIII 2011

作者： Aksamit, Pawel Szmechta, Marek Faculty of Electrical Engineering Automatic Control and Informatics Opole University of Technology Opole Poland

ISBN: (纸本)9781457718601

In paper a system for road surface defects detection is presented. Traditional approaches use human eye or specialized hardware to evaluate quality of the road. There are also systems known basing on mobile sensors network. Our approach bases on collecting GPS and accelerometer data from mobile phones of large number of individual, anonymous car drivers. The method of evaluating quality of the roads is described as well as the results of its verification. © 2011 IEEE.

关键词： Accelerometers

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Modeling packet delay distributions in an industrial telemetry system

Modeling packet delay distributions in an industrial telemet...

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5th International Symposium on Computational Intelligence and Intelligent informatics, ISCIII 2011

作者： Szmechta, Marek Aksamit, Pawel Faculty of Electrical Engineering Automatic Control and Informatics Opole University of Technology Opole Poland

ISBN: (纸本)9781457718601

This paper presents some observations of data packet delaying in a real productive industrial telemetry system. It introduces the statistical analysis of measured Round Trip Time (RTT) values of used Internet control Management Protocol (ICMP) and User Datagram Protocol (UDP) packets usually used in such applications. Scheduled ICMP delay measurements are simple to implement, while the UDP packets delay measurements need making modifications in the industrial transmission protocol implementation used in the whole telemetry system. A comparison between these two cases has been carried out. The delay measurements were carried out in all possible scenarios between each significant nodes of the distributed telemetry system. The proposed research topic is a part of a realized global distributed wind turbine monitoring system project. A comparison between obtained and required quality of service of General Packet Radio Service (GPRS) packet data transmission in these industrial applications was carried out. The paper introduces a simple method of evaluation of the theoretical probability density functions in form of histograms in all investigated scenarios. These models can give some interesting results to make the data transmission in the distributed telemetry system more effective and "intelligent". © 2011 IEEE.

关键词： Telemetering equipment

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Modeling fuzzy temporal criteria in database querying

Modeling fuzzy temporal criteria in database querying

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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Cornelia Tudorie Mihai Vlase Cristina Nica Dan Munteanu Department of Computer and Information Technology Faculty of Automatic Control Computers Electrical Engineering and Electronics Dunãrea de Jos Galati University Romania Dunãrea de Jos Galati University Romania

Expressing user's preferences in database querying is best achieved by fuzzy modeling of linguistic terms included in selection criteria. This paper deals with temporal criteria, for querying date/time columns in classical relational databases. Fuzzy models for some linguistic terms and ways to operate with them, in order to evaluate queries, are proposed.

关键词： Pragmatics Computational modeling Relational databases Calendars Computers Knowledge based systems

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Optimization of startup characteristics of medium power asynchronous motors with short circuit rotor

Optimization of startup characteristics of medium power asyn...

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International Conference on electrical Machines, ICEM

作者： A. Campeanu I. Vlad S. Enache L. Augustinov G. Liuba I. Cauţil Romanian Academy of Sciencies Romania Electrical Machines USA Power electronics circuits and electrical machinery Informatics Faculty University Eftimie USA Romanian Society of Electrical and Control Engineering Researcher of Romanian Academy-Timişoara Branch Romania University of Craiova Romania

Today efforts are made to answer to problems regarding an advanced design of electrical machines in accord with global demarche for optimization. Optimal design of asynchronous motors is a process of selection with fulfillment of criteria or specific conditions. In such way the current problems of manufacturers of electrical machines regard reduction of specific consumption of energy, obtaining superior operating characteristics, and perspective to diminish operational expenses. The paper analyzes, based on advanced numerical methods, all constructive dimensions and determine their influence on total cost for medium power asynchronous motors. The results of simulations performed, bring necessary quantitative and qualitative information to define the optimal constructive solution, taking into account also restrictive conditions imposed by beneficiary. For final variant of motor, thru a correct choice of constructive dimensions, it obtains an increase of startup torque, keeping the total cost and startup current between imposed limits.

关键词： Rotors Optimization Mathematical model Stator windings Torque Linear programming

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Analysis of Off-line Handwritten Text Samples of Different Gender using Shape Descriptors

Analysis of Off-line Handwritten Text Samples of Different G...

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International Symposium on Telecommunications

作者： Emir Sokic Almir Salihbegovic Melita Ahic-Djokic Department for Automatic Control and Electronics Faculty of Electrical Engineering University of Sarajevo Sarajevo Bosnia and Herzegovina

ISBN: (纸本)9781467348751

The human experience in the analysis of the handwriting of male and female writers indicates that gender affects the appearance of the handwritten text. These differences are usually very difficult to describe numerically. In order to analyze the handwriting differences between male and female writers, several shape description techniques, such as the tangent angle function, curvature function and Fourier descriptors, were used in this paper. As an additional contribution of the paper, a database of 3766 off-line handwritten cursive and capitalized written words has been created. The database consists of male and female handwriting samples, classified by gender and handedness. The experimental results show that typical attributes of male and female handwritings imply certain differences in shape decriptors, and those differences have the potential for usage in gender handwriting discrimination.

关键词： handwriting gender identification shape descriptors database

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Fault Detection and Isolation for Nonlinear Systems via HOSM Multiple-Observer *

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IFAC Proceedings Volumes 2012年第20期45卷 534-539页

作者： H. Ríos C. Edwards J. Davila L. Fridman National Autonomous University of Mexico Program of PhD in Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F Control and Instrumentation Research Group Department of Engineering University of Leicester University Road Leicester LE1 7RH UK National Polytechnic Institute Section of Graduate Studies and Research ESIME-UPT C.P. 07340 Mexico D.F Department of Automatic Control CINVESTAV-IPN Mexico D.F. AP-14-740 on leave on National Autonomous University of Mexico Engineering Department of Control and Robotics Division of Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F

The fault detection and isolation problem is studied for a class of nonlinear systems. Under structural conditions, a bank of High-Order Sliding-Mode observers is proposed. The value of the equivalent output injection is used for detecting and isolating particular faults in the system. The proposed method provides finite-time isolation of actuator and plant faults. Simulation results support the proposed approach.

关键词： High-order Sliding-Mode Observers Fault Detection Fault Isolation

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State Estimation and Fault Detection for Linear Switched Systems with Unstable Internal Dynamics *

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IFAC Proceedings Volumes 2012年第20期45卷 522-527页

作者： H. Ríos D. Efimov J. Davila T. Raïssi L. Fridman A. Zolghadri National Autonomous University of Mexico Department of Control Division of Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F The Non-A project at INRIA - LNE Parc Scientifique de la Haute Borne 40 avenue Halley Bt.A Park Plaza 59650 Villeneuve d'Ascq France National Polytechnic Institute Section of Graduate Studies and Research ESIME-UPT C.P. 07340 Mexico D.F University of Bordeaux IMS-Lab Automatic Control Group 351 cours de la libration 33405 Talence France Department of Automatic Control CINVESTAV-IPN Mexico D.F. AP-14-740 on leave on National Autonomous University of Mexico Engineering Department of Control and Robotics Division of Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F.

The problem of simultaneous estimation of the continuous and discrete state with additive faults in linear switched systems is addressed. Under mild structural conditions a robust estimator is designed to solve the problem. The proposed strategy includes a technique for fault detection. Simulation results support the proposed estimation scheme.

关键词： Switched systems Fault detection Unstable internal dynamics Sliding-Mode

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State Estimation for Linear Switched Systems with Unknown Inputs *

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IFAC Proceedings Volumes 2012年第9期45卷 271-276页

作者： H. Ríos D. Efimov J. Davila T. Raïssi L. Fridman A. Zolghadri National Autonomous University of Mexico Department of Control Division of Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F The Non-A project at INRIA - LNE Parc Scientifique de la Haute Borne 40 avenue Halley Bt.A Park Plaza 59650 Villeneuve d'Ascq France Department of Automatic Control CINVESTAV-IPN Mexico D.F. AP-14-740 on leave on National Autonomous University of Mexico Engineering Department of Control and Robotics Division of Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F University of Bordeaux IMS-Lab Automatic Control Group 351 cours de la libration 33405 Talence France National Polytechnic Institute Section of Graduate Studies and Research ESIME-UPT C.P. 07340 Mexico D.F

The continuous and discrete state estimation problem in linear switched systems with unknown inputs and unstable internal dynamics is addressed. A robust observer based on High-Order Sliding-Mode is proposed to solve ... 详细信息

关键词： Switched systems State estimation Unknown inputs Sliding-Mode

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Cloud computing as a platform for distributed fuzzy FCA approach in data analysis

Cloud computing as a platform for distributed fuzzy FCA appr...

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IEEE International Conference on Intelligent engineering Systems (INES)

作者： M. Sarnovský P. Butka J. Pócsová Faculty of Electrical Engineering and Informatics Department of Cybernetics and Artificial Intelligence Technical University of Košice Kosice Slovakia Faculty of Economics Technical University of Košice Kosice Slovakia BERG Faculty Institute of Control and Informatization of Production Processes Technical University of Košice Kosice Slovakia

In this paper we describe use of cloud computing platform for support of distributed creation of conceptual models based on the FCA (Formal Concept Analysis) framework. FCA is one of the approaches which can be applied in process of conceptual data analysis. Extension of classical FCA (binary table data) is (one-sided) fuzzy version that works with different types of lattice-based attributes (binary, ordinal, interval-based, etc.) in the object-attribute table. This extension, so-called generalized one-sided concept lattices, provide possibility for researcher or data analyzer to use fuzzy FCA for object-attribute tables without the need for specific unified pre-processing, what is usually expected in practical data mining or online analytical tools. Computational complexity of creation of concept lattices from large contexts (data tables) is considerable, also interpretability of huge concept lattices is problematic. Therefore, we will also propose a solution for creation of simple hierarchy of smaller FCA models. Starting data table is decomposed into smaller sets of objects and then one concept lattice is built for every subset using generalized one-sided concept lattice. Such small FCA-based models are better for interpretability, and also can be combined into one hierarchy of models using simple hierarchical clustering based on the descriptions of particular models (as weighted vectors of attributes), which can be searched in analytical tool by data analyst. Cloud infrastructure is then used for increase of computational effectiveness, because particular models are built in parallel/distributed way. This cloud module can be a part of more complex data analytical system, which is also presented at the end of the paper.

关键词： Lattices Cloud computing Computational modeling Data analysis Clustering algorithms Algorithm design and analysis Analytical models

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