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A persistent cross-platform class objects container for C++ and wxWidgets

WSEAS Transactions on Computers 2009年第5期8卷 778-787页

作者： Bližnák, Michal Dulík, Tomáš Vašek, Vladimír Department of Applied Informatics Faculty of Applied Informatics Tomas Bata University Nad Stráněmi 4511 760 05 Zlín Czech Republic Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University Nad Stráněmi 4511 760 05 Zlín Czech Republic

This paper introduces a new open-source cross-platform software library written in C++ programming language which is able to serialize and deserialize hierarchically arranged class instances and their data members via XML files. The library provides easy and efficient way for processing, storing and managing complex object-oriented data with relationships between object instances. The library is based on mature cross-platform toolkit called wxWidgets and thus can be successfully used on many target platforms such as MS Windows, Linux or OS X. The library is published under open source licence and can be freely utilised in both open source and commercial projects. In this article, we describe the inner structure of the library, its key algorithms and principles and also demonstrate its usage on a set of simple examples.

关键词： Containers

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Direction of sound wave arrival determination using time-delay estimation and beamforming methods

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WSEAS Transactions on Circuits and Systems 2009年第12期8卷 893-904页

作者： Dostálek, Petr Vašek, Vladimír Dolinay, Jan Department of Automation and Control Engineering Tomas Bata University in Zlín Faculty of Applied Informatics Nad Stráněmi 4511 760 05 Zlín Czech Republic

This paper deals with direction of sound wave arrival determination using time-delay estimation and beamforming methods with utilization of static microphone array with fixed geometry configuration. Theoretical part describes main principle of both methods and possibility of program implementation. Experimental part proposes hardware design of the sensory systems separately for time-delay estimation and beamforming evaluation methods due to different requirements on microphone array structure. Developed localization system is based on standard personal computer equipped with Advantech PCI-1716 multichannel data acquisition device.

关键词： Beamforming

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Numerous subharmonic states in Direct Torque controlled Induction Machine

Numerous subharmonic states in Direct Torque Controlled Indu...

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IEEE SSD International Multi-Conference on Systems, Signals and Devices

作者： Zoltan Suto Istvan Nagy Department of Automation and Applied Informatics Budapest University슠of슠Technology슠and슠Economics Budapest Hungary Control Research Group Hungarian Academy of Sciences (ATOMKI) Budapest Hungary

The scope of the paper is the strange behavior of direct torque controlled (DTC) induction machine (IM) resulting from the nonlinearity of hysteresis comparators. A piecewise-defined, non-stroboscopic, discrete-time Poincare map can be constructed for the system. The movement of the two controlled state variables, the stator flux linkage and the electric torque, within the hysteresis loops had to be determined from switch to switch. This complex Poincare map takes into account the fast switching operations of the voltage source converter (VSC). Periodic, subharmonic, chaotic and intermittent chaotic states along a special bifurcation series caused by discontinuity of the Poincare mapping function were detected. In order to give a better insight into the system operation, a one-dimensional piecewise linear map is developed, numerous subharmonic states were analyzed.

关键词： Torque control Induction machines Switches Electric variables control Hysteresis Chaos Stators Couplings Voltage Switching converters

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Carpet wear classification based on support vector machine pattern recognition approach

Carpet wear classification based on support vector machine p...

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IEEE International Conference on Intelligent Computer Communication and Processing (ICCP)

作者： C. Copot S. Syafiie S. Vargas R. de Keyser L. Van Langenhove C. Lazar Department of Automatic Control and Applied Informatics “Gh. Asachi” Technical University of Iasi Romania Department of Electrical energy Systems and Automation Ghent University Belgium Department of Telecommunication Ghent University Belgium Department of Textile Ghent University Belgium

Nowadays, the carpet quality analysis is determined in industry by human experts, because the automated assessment is not capable of matching the human expertise. Therefore, the carpet company demands a reliable and economic standardization of carpet wear level. This paper presents a new strategy for analyzing and classifying the texture of the wear carpet surface of 3D image, where 3D image is produced by 3D laser scanner. 2D image is obtained from 3D data resample on different grid sizes. The features extracted are based on Haralick descriptors of co-occurrence matrix. These features are used as inputs to a classifier system, which is based on support vector machine (SVM). Multi-class classification training based on SVM is applied. The performance of the new technique proposed gives an average of over 92% correct labeling.

关键词： Support vector machines Support vector machine classification Pattern recognition Humans Standardization Image analysis Image texture analysis Surface texture Surface emitting lasers Feature extraction

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Tire slip fuzzy control of a laboratory Anti-lock Braking System

Tire slip fuzzy control of a laboratory Anti-lock Braking Sy...

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European control Conference (ECC)

作者： Mircea-Bogdan Rădac Radu-Emil Precup Stefan Preitl József K. Tar Keith J. Burnham Department of Automation and Applied Informatics “Politehnica” University of Timisoara Timisoara Romania Institute of Intelligent Engineering Systems Budapest Tech Polytechnical Institution Budapest Hungary Control Theory and Applications Centre Coventry University Coventry UK

A tire slip fuzzy control solution is designed and implemented in the framework of an Anti-lock Braking System (ABS) comprising a highly nonlinear controlled plant. The fuzzy controllers are designed to work for locally linearized models of the plant. Their parameters are tuned by mapping from simple PI controllers in terms of the modal equivalence principle. The experience from the experiments is incorporated in the design of the rules and the stability analysis enables the controller design. The benefits of filtering the input of the fuzzy controller are highlighted in real-time experimental results.

关键词： Wheels Tires Stability analysis Actuators Friction Fuzzy control Mathematical model

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Tire slip fuzzy control of a laboratory anti-lock braking system 10

Tire slip fuzzy control of a laboratory anti-lock braking sy...

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2009 10th European control Conference, ECC 2009

作者： Radac, Mircea-Bogdan Precup, Radu-Emil Preitl, Stefan Tar, Jozsef K. Burnham, Keith J. Department of Automation and Applied Informatics 'Politehnica' University of Timisoara Bd. V. Parvan 2 Timisoara300223 Romania Institute of Intelligent Engineering Systems Budapest Tech Polytechnical Institution Bécsi út 96/B Budapest1034 Hungary Control Theory and Applications Centre Coventry University Armstrong Siddeley Building Priory Street CoventryCV1 5FB United Kingdom

ISBN: (纸本)9783952417393

关键词： Fuzzy control

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Evolutionary optimization methods for predictive on-off control

Evolutionary optimization methods for predictive on-off cont...

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作者： Schmitz, Ulrich Haber, Robert Bars, Ruth Shell Deutschland Oil Rhineland Refinery Department for Technology and Services Ludwigshafener Strasse l D-50389 Wesseling Germany University of Applied Science Cologne Institute of Process Engineering and Plant Design Betzdorfer Str. 2 D-50679 Cologne Germany Budapest Univ. of Technology and Economics Dept. of Automation and Applied Informatics MTA-BME Control Research Group Goldmann Gy.ter 3 H-1111 Budapest Hungary

ISBN: (纸本)9783902661661

On-off control is still widely used in the industry, especially for discontinuous actuators, e.g. compressors, steam turbines or furnace burners. Exact set-point control is not possible by an on-off controller. Lower and upper limits are defined for the control signal which should not be violated. For this predictive gap control quadratic and horizon dependent cost functions are defined. Traditional numerical optimization fails with longer prediction horizons, but a genetic algorithm can be effectively applied even for long horizons.

关键词： Actuators

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Team AnnieWAY's autonomous system for the DARPA Urban Challenge 2007

Team AnnieWAY's autonomous system for the DARPA Urban Challe...

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作者： Kammel, Sören Ziegler, Julius Pitzer, Benjamin Werling, Moritz Gindele, Tobias Jagzent, Daniel Schöder, Joachim Thuy, Michael Goebl, Matthias Von Hundelshausen, Felix Pink, Oliver Frese, Christian Stiller, Christoph Institute for Measurement and Control University of Karlsruhe Karlsruhe 76131 Germany Institute for Applied Computer Science/Automation University of Karlsruhe Karlsruhe 76128 Germany Industrial Applications of Informatics and Microsystems University of Karlsruhe Karlsruhe 76131 Germany Institute for Distributed Measurement Systems Technical University of Munich Munich 80290 Germany Institute for Institute for Real-Time Computer Systems Technical University of Munich Munich 80290 Germany Department of Aerospace Engineering University of the Federal Armed Forces Neubiberg 85577 Germany

ISBN: (纸本)9783642039904

This paper reports on AnnieWAY, an autonomous vehicle that is capable of driving through urban scenarios and that has successfully entered the finals of the 2007 DARPA Urban Challenge competition. After describing the main challenges imposed and the major hardware components, we outline the underlying software structure and focus on selected algorithms. Environmental perception mainly relies on a recent laser scanner which delivers both range and reflectivity measurements. While range measurements are used to provide 3D scene geometry, measuring reflectivity allows for robust lane marker detection. Mission and maneuver planning is conducted using a concurrent hierarchical state machine that generates behavior in accordance with California traffic laws. We conclude with a report of the results achieved during the competition. © 2009 Springer-Verlag Berlin Heidelberg.

关键词： Reflection

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Robust Proportional-Integral control of a Laboratory Model Using Programmable Logic controller SIMATIC S7-300

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IFAC Proceedings Volumes 2009年第6期42卷 36-41页

作者： Radek MatuŜu Katarína Vaneková Roman Prokop Monika BakoŜová Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University in Zlín Nad Stránemi 4511 76005 Zlín Czech Republic Tel: +420 576 033 015 fax: +420 576 035 279 Department of Information Engineering and Process Control Faculty of Chemical and Food Technology Slovak University of Technology in Bratislava Radlinského 9 81237 Bratislava Slovakia Tel: +421 259 325 364 fax: +421 252 496 469

The main aim of the contribution is to present a possible approach to design of simple Proportional-Integral (PI) robust controllers and subsequently to demonstrate their applicability during control of a laboratory model with uncertain parameters through the Programmable Logic controller (PLC) SIMATIC S7–300 by Siemens Company. The proposed and utilized synthesis consists of two steps – the former one is a determination of controller parameters area, which ensures the robustly stable control loop and which is based on the computing/plotting the stability boundary locus while the latter one lies in the final choice of the controller itself relying on algebraic techniques. The basic theoretical parts are followed by laboratory experiments in which the 3rd order nonlinear electronic model has been successfully controlled in various working points.

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Evolutionary optimization methods for predictive on-off control

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IFAC Proceedings Volumes 2009年第19期42卷 408-413页

作者： Ulrich Schmitz Robert Haber Ruth Bars Shell Deutschland Oil Rhineland Refinery Department for Technology and Services Ludwigshafener Strasse l D-50389 Wesseling Germany University of Applied Science Cologne Institute of Process Engineering and Plant Design Betzdorfer Str. 2 D-50679 Cologne Germany Budapest Univ. of Technology and Economics Dept. of Automation and Applied Informatics MTA-BME Control Research Group Goldmann Gy.ter 3 H-1111 Budapest Hungary

Abstract On-off control is still widely used in the industry, especially for discontinuous actuators, e.g. compressors, steam turbines or furnace burners. Exact set-point control is not possible by an on-off controller. Lower and upper limits are defined for the control signal which should not be violated. For this predictive gap control quadratic and horizon dependent cost functions are defined. Traditional numerical optimization fails with longer prediction horizons, but a genetic algorithm can be effectively applied even for long horizons.

关键词： predictive control on-off control discontinuous actuators genetic algorithms

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