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International Conference on Computational Cybernetics (ICCC)

作者： Adrian-Sebastian Paul Radu-Emil Precup Claudiu Pozna Radu-Codruţ David Department of Automation and Applied Informatics Politehnica University Timisoara Timisoara Romania Faculty of Engineering Széchenyi István University Gyor Hungary Department of Product Design and Robotics Transilvania University of Brasov Brasov Romania

ISBN: (纸本)9781424474325;9781424474332

This paper proposes a platform referred to as nDSP to interconnect different software audio signal processing effects which are modularized. The new platform is focused on having all processing done by the system CPU at higher quality than that achieved using hardware DSPs. The software representation of the module inside the platform is defined such that its state can be externally controlled, therefore the design of self-tuning filters is allowed. The design aims the further use of software audio signal processing in low-cost audiophile loudspeaker systems taking full advantage of the new personal computer hardware products.

关键词： Hardware Central Processing Unit Audio systems Personal communication networks Digital signal processing Loudspeakers Multicore processing Energy efficiency Robotics and automation Digital signal processing chips

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Modeling and control aspects of long distance telesurgical applications

Modeling and control aspects of long distance telesurgical a...

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International Conference on Computational Cybernetics (ICCC)

作者： Tamás Haidegger Levente Kovács Stefan Preitl Radu-Emil Precup Adalbert Kovács Balázs Benyó Zoltán Benyó Department of Control Engineering and Information Technology Politehnica University Timisoara Timisoara Romania Dept. of Control Engineering and Information Technology Dept. of Automation and Applied Informatics “Politehnica” University of Timisoara Timisoara Romania Dept. of Mathematics “Politehnica” University of Timisoara Timisoara Romania

ISBN: (纸本)9781424474325

There is an increasing need to support telemedicine with advanced technology. Currently, long distance telesurgical systems are only used on Earth for research purposes, but the military and the space agencies are interested in the spatial extension of effective surgical treatment through remote teleoperation. One of the major limitations of future systems is the communication lag time. In the case of the envisioned human exploratory space missions to Moon and Mars, the signal latency can be several seconds or even minutes. This paper deals with theoretical and practical aspects of the problem. Modeling approaches are discussed, proposing simplified human and machine representations to accommodate long distance telesurgical applications. Further, classical control methods are presented based on cascade control, focusing on teleoperation. A suitable controller can be designed with an empirical controller of the inner loop, based on Kessler methods, while the outer loop can be based on predictive control.

关键词： Space technology Humans Telemedicine Earth Surgery Space exploration Space missions Moon Mars Delay

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Use of accelerometers for material inner defect detection

Use of accelerometers for material inner defect detection

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International Conference on applied Electronics, AE

作者： Ondrej Krejcar Robert Frischer Department of Measurement and Control Center of Applied Cybernetics Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Ostrava Czech Republic Department of Automation and Computing in Metallurgy VSB-Technical University of Ostrava Ostrava Czech Republic

This paper deals with a possibility of non-destructive diagnostics of solid objects by software analysis of vibration spectrum by accelerometers. By a use of MATLAB platform, a processing and information evaluation from accelerometer is possible. Accelerometer is placed on the measured object. The analog signal needs to be digitized by a special I/O device to be processed offline with FFT (Fast Fourier Transformation). The power spectrum is then examined by developed evaluating procedures.

关键词： Accelerometers Vibrations Software Conferences Distortion measurement Converters Unified modeling language

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Notice of Retraction: Material inner defect detection by a vibration spectrum analysis

Notice of Retraction: Material inner defect detection by a v...

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International Conference on Mechanical and Electronics engineering (ICMEE)

作者： Ondrej Krejcar Robert Frischer Department of Measurement and Control Center for Applied Cybernetics Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Ostrava Czech Republic Department of Automation and Computing in Metallurgy VSB-Technical University of Ostrava Ostrava Czech Republic

This article has been retracted by the publisher.

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In-Pipe Mobile Minimachine and Its control

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Journal of Energy and Power engineering 2010年第10期4卷 17-22页

作者： M. Gorzas M. Dovica V. Fedak V. Ivanco Department of Safety and Quality of Production Faculty of Mechanical Engineering Technical University of Kosice Letna 9Kosice 04200 Slovak Republic Department of Biomedical Engineering Automation and Measurement Faculty of Mechanical Engineering Technical Universityof Kosice Letn6 9 Kosice 94200 Slovak Republic Department of Electrical Engineering and Mechatronics Faculty of Electrical Engineering and Informatics Technical Universityof Kosice Letn6 9 Kosice 04200 Slovak Republic Institute of Applied Mechanics and Mechatronics Faculty of 31echanical Engineering Technical University of Kosice Lemd 9Kosice 04200 Slovak Republic

This paper deals with utilization possibility of a kinematical couple of screw-matrix in minimachine mechatronic concept which is assigned to move within the pipes having less than 25 mm of the inner diameter. The principle of the movement for a straightforward motion consists in transformation of the actuator rotary movement through a screw and a nut to the linear motion. It causes a change of distance between the front and rear parts of the minimachine modules. Due to minimization of the dimensions, the electrical control and power supply components are placed outside of the minimachine operating area. The control module is based on a programmable integrated circuit （PIC）.

关键词： control motion control in-pipe minimachine.

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Modeling of a vehicle with continuously variable transmission

Modeling of a vehicle with continuously variable transmissio...

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IEEE International Workshop on Robotics in Alpe-Adria-Danube Region (RAAD)

作者： C.-A. Dragos S. Preitl R.-E. Precup D. Pirlea C.-S. Nes E. M. Petriu C. Pozna Department of Automation and Applied Informatics Polytechnic University of Timisoara Timisoara Romania Department of Strength of Materials Polytechnic University of Timisoara Timisoara Romania School of Information Technology and Engineering University of Ottawa Ottawa Canada Faculty of Engineering Széchenyi István University Gyor Hungary Department of Product Design and Robotics Transilvania University of Brasov Brasov Romania

The paper presents aspects concerning the modeling and driving scenarios of a class of vehicular power train systems. The modeling includes an analysis of the system components which include the spark-ignition internal combustion engine, the torque converter, the metal V-belt type continuously variable transmission and the wheels. Four driving scenarios are illustrated by digital simulation results: acceleration, overtaking maneuver, ramp encounter and engine brake.

关键词： Mechanical power transmission Internal combustion engines Mathematical model Torque converters Wheels Robotics and automation Power system modeling Acceleration Vehicle driving Aerodynamics

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Stability analysis of a class of MIMO fuzzy control systems

Stability analysis of a class of MIMO fuzzy control systems

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IEEE International Conference on Fuzzy Systems (FUZZ-IEEE)

作者： Radu-Emil Precup Marius L. Tomescu Emil M. Petriu Stefan Preitl János Fodor Daniela Bărbulescu Department of Automation and Applied Informatics Polytechnic University of Timisoara Timisoara Romania “Politehnica” University of Timisoara Timisoara RO Romania Faculty of Computer Science Aurel Vlaicu University of Arad Arad Romania Faculty of Computer Science Complex Universitar Arad RO Romania University of Ottawa School of Information Technology and Engineering Ottawa ON Canada Óbuda University Institute of Intelligent Engineering Systems Budapest Hungary

This paper suggests a new stability analysis approach dedicated to a class of fuzzy control systems controlling multi input-multi output (MIMO) nonlinear processes by means of Takagi-Sugeno fuzzy logic controllers. The approach is based on LaSalle's global invariant set theorem, and an original stability theorem offers sufficient stability conditions. The applicability and efficiency of the theoretical results are illustrated by a MIMO case study dealing with the fuzzy control of a spherical three tank system.

关键词： Stability analysis Process control MIMO Fuzzy control Valves Numerical stability Lyapunov method

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Robust Proportional-Integral control of a laboratory model using Programmable Logic controller SIMATIC S7-300

Robust Proportional-Integral control of a laboratory model u...

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6th IFAC Symposium on Robust control Design, ROCOND'09

作者： Matušů, Radek Vaneková, Katarína Prokop, Roman Bakošová, Monika Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University in Zlín Nad Stráněmi 4511 76005 Zlín Czech Republic Department of Information Engineering and Process Control Faculty of Chemical and Food Technology Slovak University of Technology in Bratislava Radlinského 9 81237 Bratislava Slovakia

ISBN: (纸本)9783902661456

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. © 2009 IFAC.

关键词： Programmable logic controllers

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

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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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