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INES 2006: 10th International Conference on Intelligent engineering Systems 2006

作者： Novák, Ágnes B. Tuza, Zsolt Faculty of Information Technology Péter Pázmány Catholic University Práter u. 50/A H-1088 Budapest Hungary Bánki Donát Faculty of Mechanical Engineering Budapest Tech. Népszínház u. 8 H-1081 Budapest Hungary Computer and Automation Institute Hungarian Academy of Sciences Kende u. 13-17 H-1111 Budapest Hungary Department of Computer Science Pannon University H-8200 Veszprém Hungary

ISBN: (纸本)0780397088

In this paper we enhance the PLA relational spatial model for storing a special type of planar graphs. The PLA-model is very handy to store 2-connected planar graphs, but it is not capable at all to store some other important classes of planar graphs: trees and, more generally, planar graphs with cut edges. In this paper we propose a method for their representation. The main idea is based on Halin graphs that are planar graphs of minimum degree 3 from which the removal of the boundary edges of the infinite region yields a tree. Our results are to identify Halin graphs from the model, and to represent trees as virtual Halin graphs in order to store them without major alteration of the original PLA-Model. © 2006 IEEE.

关键词： Intelligent systems

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Semiactive backstepping control for vibration attenuation in structures equipped with magnetorheological actuators

Semiactive backstepping control for vibration attenuation in...

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IEEE International Conference on computer-Aided Design

作者： Ningsu Luo Rodolfo Villamizar Josep Vehi Shirley Dyke Department of Electronics Computer Science and Automation Universitat de Girona Girona Spain School of Electrical and Electronics Engineering and Telecommunication Universidad Industrial de Santander Bucaramanga Colombia Faculty of Engineering Sciences Washington University of Saint Louis USA

This paper deals with the problem of semiactive vibration control of civil engineering structures subject to unknown external disturbances (for example, earthquakes, winds, etc.). Two kinds of semiactive controllers are proposed based on the backstepping control technique. The experimental setup used is a 6-story test structure equipped with shear-mode semiactive magnetorheological dampers being installed in the Washington University Structural Control and Earthquake engineering Laboratory (WUSCEEL). The experimental results obtained have verified the effectiveness of the proposed control algorithms

关键词： Backstepping Vibration control Attenuation Actuators Civil engineering Testing Shock absorbers Damping Earthquake engineering Laboratories

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Robust Adaptive Control for Complex Systems Employing ANN Emulation of Nonlinear Functions

Robust Adaptive Control for Complex Systems Employing ANN Em...

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Seminar on Neural Network Applications in Electrical engineering

作者： Georgi M. Dimirovski Yuanwei Jing Yanxin Zhang Miomir K. Vukobratovic Faculty of Electrical Engineering SS Cyril and Methodius University Skopje Macedonia Department of Computer Engineering Dogus University Kadikoy Istanbul Turkey School of Information Science and Engineering Northeastern University Shenyang China Laboratory of Robotics & Flexible Automation Mihajlo Pupin Institute Belgrade Serbia

A new robust adaptive control design synthesis, which employs both high-order neural networks and math-analytical results, for a class of complex nonlinear mechatronic systems possessing similarity property has been derived. This approach makes an adequate use of the structural feature of composite similarity systems and neural networks to resolve the representation issue of uncertainty interconnections and subsystem gains by on-line updating the weights. This synthesis does guarantee the real stability in closed-loop but requires skills to obtain larger attraction domains. Mechatronic example of an axis-tray drive system, possessing uncertainties, is used to illustrate the proposed technique

关键词： Robust control Adaptive control Emulation Network synthesis Neural networks Mechatronics Uncertainty Artificial neural networks Control system synthesis Stability

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Introducing Grammatical Evolution in Fetal Heart Rate Analysis and Classification

Introducing Grammatical Evolution in Fetal Heart Rate Analys...

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International IEEE Conference on Intelligent Systems, IS

作者： Ioannis Tsoulos George Georgoulas Dimitris Gavrilis Chrysostomos Stylios Joao Bemardes Peter Groumpos Computer Science Department University of Ioannina Ioannina Greece Laboratory for Automation and Robotics University of Patras Patras Greece Department of Electrical and Computer Engineering University of Patras Patras Greece Laboratory for Automation and Robotics Informatics and Management Artas Greece Department of Gynecology and Obstetrics Porto Portugal Department of Gynecology and Obstetrics Porto Faculty of Medicine Porto Portugal Laboratory for Automation & Robotics University of Patras Patras Greece

Electronic fetal monitoring is an essential tool for fetal surveillance during labor. It is mainly based on the monitoring and evaluation of the fetal heart rate (FHR) signal, which has to be interpreted online. Evaluation and interpretation of FHR gives an indication of the fetal condition. A lot of research efforts have been done towards the development of automatic and reliable methods for processing and evaluating FHR. This research work introduces an integrated methodology for processing and classifying FHR based on the novel approach of grammatical evolution for feature construction and selection. The proposed methodology is presented, and it is applied to a data set. Experimental results are promising paving the way for further research in that direction

关键词： Fetal heart rate Robotics and automation Signal processing Heart rate measurement computerized monitoring Neural networks Cardiology Laboratories Telephony Medical robotics

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A Method to Represent Restricted Classes of Planar Graphs in the Enhanced Spatial Relational Model PLA, Based on Hahn Graphs

A Method to Represent Restricted Classes of Planar Graphs in...

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IEEE International Conference on Intelligent engineering Systems (INES)

作者： A.B. Novak Z. Tuza Faculty of Information Technology Péter Pázmány Catholic University Budapest Hungary Bánki Donát Faculty of Mechanical Engineering Budapest Tech Budapest Hungary Hungarian Academy of Sciences Computer and Automation Institute Budapest Hungary Department of Computer Science Pannon University Veszprém Hungary

关键词： Programmable logic arrays Tree graphs Information technology automation Mechanical engineering computer science Bipartite graph

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Implementation of Industrial Robot Force Control Case Study: High Power Stub Grinding and Deburring

Implementation of Industrial Robot Force Control Case Study:...

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2006 IEEE/RSJ International Conference on Intelligent Robots and Systems

作者： A. Robertsson T. Olsson R. Johansson A. Blomdell K. Nilsson M. Haage B. Lauwers H. De Baerdemaeker T. Brogardh H. Brantmark Department of Automatic Control Lund University Hospital Lund Sweden Dept. of Automatic Control Lund University Sweden Dept. of Computer Science Lund University Sweden Department of Computer Science Lund University Hospital Lund Sweden Dept. of Mechanical Engineering Faculty of Engineering Heverlee Belgium Department of Mechanical Engineering Heverlee Belgium ABB Automation Technologies - Robotics Västerås Sweden

In this paper, the results from a joint industry-academia project in industrial robotic force control are presented. The extension and implementation of an external sensor system for an industrial robot system, which can be used for high-bandwidth force control, are described. Results from two industrial applications using the system are presented, a stub grinding application using a new compliant grinding end-effector integrated with the robot control system, and a deburring application with a stiff tool requiring high-bandwidth force control in six degrees of freedom. Using the system an easily reconfigurable control structure was achieved, which was able to control contact forces with a sampling bandwidth of an order of magnitude higher than for conventional robot controllers

关键词： Industrial control Service robots Force control Deburring Electrical equipment industry Robot sensing systems Control systems Robot control Sensor systems Sampling methods

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Delay-dependent stability of 2D state-delayed linear systems

Delay-dependent stability of 2D state-delayed linear systems

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IEEE International Symposium on Circuits and Systems (ISCAS)

作者： W. Paszke J. Lam K. Galkowski Shengyuan Xu E. Rogers A. Kummert Institute of Control and Computation Engineering University of Zielona Góra Zielona Gora Poland Department of Mechanical Engineering University of Hong Kong Hong Kong China Department of Automation Nanjing University of Science and Technology of PLA Nanjing China Faculty of Electrical Information and Media Engineering University of Wuppertal Wuppertal Germany School of Electronics and Computer Science University of Southampton Southampton UK

This paper addresses the problem of stability for two-dimensional systems with delays in the state. To solve this problem, the Lyapunov second method is used. The resulting condition is written in terms of linear matrix inequalities and it is dependent on the size of delays. This fact allows us to reduce the conservatism in the stability analysis of two-dimensional systems with state delays. A simulation example is given to illustrate the theoretical developments

关键词： Stability Linear systems Delay systems Symmetric matrices Control systems Linear matrix inequalities Delay lines Automatic control Control engineering computing Mechanical engineering

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HIGH-RISE BUILDINGS UNDER EARTHQUAKE EXCITATION: STABILIZATION USING SMC

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IFAC Proceedings Volumes 2006年第16期39卷 776-781页

作者： Georgi M. Dimirovski Jun Zhao Miomir K. Vukobratovic Dogus University Faculty of Engineering Dept. of Computer Engineering Acibadem Zeamet Sk. 21 Kadikoy TR-34722 Istanbul Rep. of Turkey Fax: ++90-216-327-9631 Tel: ++90-216-327-1104 SS Cyril and Methodius University Faculty of Electrical Engineering Rugjer Boskovic b.b. Karpos II MK-1000 Skopje Rep. of Macedonia Northestern University School of Information Science and Engineering Institute of Control Science Shenyang Liaoning CN-110004 P. R. of China Fax: ++86-24-8367-2273 Tel: ++86-24-2389-3000 Mihailo Pupin Institute Laboratory of Robotics & Automation Volgina 15 Karaburma 11000 F. R. Serbia and Montenegro Fax: ++381-11-2775-870 Tel: ++381-11-2774-236

The goal to control the dynamics of high-rise buildings either to ameliorate the damage or prevent their destruction when subject to an earthquake excitation has been subject of extensive research. All known control designs have advantages and disadvantages as well as operating limits. The application of sliding-mode control to controlling earthquake induced vibrations of a multi-story structural system as an active seismic compensation plus base isolation has been investigated. The performance has been compared to the one of traditional industrial controls, and relevant conclusions drawn. Simulation results, carried out using El Centro earthquake acceleration, have shown that the sliding mode control can decrease significantly displacements of the floors.

关键词： Earthquake sliding mode control structural systems vibration control

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Windows XP issues for real-time temperature monitoring

Windows XP issues for real-time temperature monitoring

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IMTC'05 - Proceedings of the IEEE Instrumentation and Measurement Technology Conference

作者： Marcu, Marius Moldovan, Horatiu Zilahi, Mihai Tomescu, Victor Ionas, Mihai Department of Computer and Software Engineering Politehnica University of Timisoara Faculty of Automation Control and Computer Science 2 V. Parvan Timisoara Romania

ISBN: (纸本)0780388798

Windows operating systems (NT, 2000, XP, 2003) were not designed for real-time and time-critical applications. But, due to the market requirements, many of the monitoring and control applications are to use Windows NT based operating systems. One of the most important parameter in almost all applications is temperature. Therefore, this article addresses the problem of temperature monitoring using a non real-time operating system, like Windows. A number of three solutions for thermal sensors connecting to PC's interfaces are presented. © 2005 IEEE.

关键词： Real time systems

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PCB testing using infrared thermal signatures

PCB testing using infrared thermal signatures

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IMTC'05 - Proceedings of the IEEE Instrumentation and Measurement Technology Conference

作者： Moldovan, Horatiu Marcu, Marius Vladutiu, Mircea Department of Computer and Software Engineering Politehnica University of Timisoara Faculty of Automation Control and Computer Science Postal Address 2 V. Parvan Timisoara Romania

ISBN: (纸本)0780388798

A Printed Circuit Board (PCB) testing method using infrared thermal signatures is presented. The concept of thermal signature for PCBs is introduced. Based on this concept, the testing method is able to classify the integrated circuits (ICs) on a PCB into a number of classes (e.g. functional - fault free, non-functional - faulty and less reliable - functional circuits with high current consumption). According with thermal signature of each IC on the PCB, the PCBs can be also classified in the same number of classes. The classification system is a feed-forward neural network that learns and classifies the information achieved from the infrared image. © 2005 IEEE.

关键词： Printed circuit boards

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