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Mediterranean Conference on control and Automation (MED)

作者： Vedran Bobanac Stjepan Bogdan Department of Control and Computer Engineering Faculty of Electrical Engineering and Computing University of Zagreb Croatia

In this paper we propose modified Banker's algorithm for routing and scheduling in multi-AGV systems. A mission path, determined by string algebra is executed in a way that some unsafe states are allowed in order to achieve better utilization of vehicles. Moreover, a method for splitting a mission path is proposed so that number of resources (arcs) needed for mission execution is gradually reduced which provides less restrictions on availability vector, thus allowing more traveling space for other vehicles. Results shown at the end of the paper demonstrate strength of the proposed method compared with standard Banker's algorithm.

关键词： Automation Conferences

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Tactile based aiding device for unsighted persons using shape memory alloys

Tactile based aiding device for unsighted persons using shap...

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Canadian Conference on electrical and computer engineering (CCECE)

作者： Amin Mahdizadeh Iraj Hassanzadeh Control Engineering Department Faculty of Electrical and Computer Engineering University of Tabriz Tabriz Iran

In this paper we present a new shape memory alloys (SMAdasias) device which designed for people with eye sight disabilities. Using the accessory along with a computer graphic user interface, sightless people could percept and interact with computer analogous to a normal person. The major contribution of the proposed method is resembling of human perception using constructed SMApsilas device along with a HMI monitor. The proposed plan could also be employed extensively for tele-presence applications.

关键词： Shape memory alloys Wire computer displays Temperature Humans Fingers User interfaces Nickel Force control Delay

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Towards net-centric system of systems robotics in air, sea and land

2008 IEEE International Conference on System of Systems Engi...

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2008 IEEE International Conference on System of Systems engineering, SoSE 2008 2008年

作者： Shaneyfelt, Ted Erdogan, Sevki Maredia, Azim Vemuri, Gnanadeep Pachala, Bhargavaram Yue, Dong Karovalia, Sohel Lu, Ming-Zhu Yang, Shi-Zhong Gao, Chenyu Autonomous Control Engineering Center Electrical and Computer Engineering Department University of Texas San Antonio TX United States

ISBN: (纸本)9781424421732

This paper investigates how we can work towards building net-centric swarms of land, sea and air robots working together to accomplish a common goal. The goal is to bring together swarms of robots from all three sectors to safely benefit mankind without increasing dangers in the process. Several platforms are explored for simulation to investigate swarm robotics within heterogeneous environments. © 2008 IEEE.

关键词： System of systems

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Experimental evaluation of power control algorithms for wireless sensor networks

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IFAC Proceedings Volumes 2008年第2期41卷 619-624页

作者： Pan Gun Park Carlo Fischione Karl H. Johansson Automatic Control Lab School of Electrical Engineering Royal institute of technology Stockholm Sweden Department of Electrical Engineering and Computer Sciences UC Berkeley Berkeley CA USA

The main contribution of this paper is the implementation and experimental evaluation of thee radio power control algorithms for wireless sensor networks. We illustrate the necessity of lightweight radio power control algorithms for the deployment of wireless sensor networks in realistic situations. Furthermore, based on a simple loss model, we develop an algorithm that optimizes the transmit power while guaranteeing a desired packet error probability. The simple power control strategy is also compared with two other strategies in experiments using Tmote Sky sensor nodes. A component-based software implementation in the Contiki operating system is used.

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Development of a 3D mapping using 2D/3D sensors for mobile robot locomotion

Development of a 3D mapping using 2D/3D sensors for mobile r...

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IEEE International Conference on Technologies for Practical Robot Applications (TePRA)

作者： C. Joochim H. Roth Institute of Automatic Control Engineering Department of Electrical Engineering and Computer Science University of Siegen Germany

This paper presents a simultaneous localization and mapping algorithm (SLAM) by using a new 3D sensor namely the photonic mixer devices (PMD). The PMD camera enables 3D image grabbing within a few milliseconds and gives an important impulse in visual 3D sensing. This camera is capable of capturing reliable depth images directly in real-time. The PMD is also compact and affordable, which makes it attractive for versatile applications including surveillance and computer vision. However, the PMD based device has still limited resolution and provides only gray scale information. To achieve the virtual geometric data, the rather new 3D PMD and 2D RGB color cameras are combined to generate visually realistic 3D maps. Visual input from the 2D camera not only delivers high resolution texture data but also enables the mobile robot to enhance the 3D data calculated from the range output of the PMD camera. Precision robot locomotion is implemented in order to register the 3D geometric data simultaneously.

关键词： Mobile robots Cameras Simultaneous localization and mapping Robot vision systems Optoelectronic and photonic sensors Application software Layout Iterative closest point algorithm Surface emitting lasers Surveillance

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IEEE Transactions on Haptics: Editorial

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IEEE Transactions on Haptics 2008年第1期1卷 2-8页

作者： Edward Colgate, J. Lederman, Susan Prattichizzo, Domenico Barbagli, Federico Basdogan, Cagatay Buss, Martin Ernst, Marc Frisoli, Antonio Gillespie, Brent Grant, Danny Harders, Matthias Hayward, Vincent Jones, Lynette Kajimoto, Hiroyuki Kappers, Astrid Kheddar, Abderrahmane Lin, Ming C. MacLean, Karon Miller, Brian Noma, Haruo Okamura, Allison M. O'Malley, Mareia Ryu, Jeha Tan, Hong Z. Yokokohji, Yasuyoshi Department of Psychology School of Computing Queen's University Canada IEEE Robotics and Automation Society Tübingen Germany Stanford University's Computer Science Department Tübingen Germany Institute of Automatic Control Engineering Technische Universität München Germany Independent Research Group Multisensory Perception and Action Max Planck Institute for Biological Cybernetics Tübingen Germany Department of Applied Mechanics SSSA Japan Research Division Virtual Reality and Telerobotic Systems PERCRO Laboratory Japan Department of Mechanical Engineering Japan Department of Robotics McGill University Canada Computer Vision Lab ETH Zurich Japan Virtual Reality in Medicine Group Japan IEEE CS/RAS Technical Committee on Haptics Japan Department of Electrical and Computer Engineering McGill University Canada Department of Mechanical Engineering MIT Japan University of Electro-Communications Japan Department of Physics and Astronomy Utrecht University Netherlands University of Evry France Chapel Hill United States Department of Computer Science University of British Columbia Canada ATR Knowledge Science Lab United Kingdom Department of Mechanical Engineering Denmark Johns Hopkins University United States Laboratory for Computational Sensing and Robotics United Kingdom Engineering Research Center for Computer-Integrated Surgical Systems and Technology United States Mechanical Engineering and Materials Science Department Rice University United States Korea Republic of Department of Electrical and Computer Engineering Mechanical Engineering and Psychological Sciences Purdue University United States Department of Mechanical Engineering and Science Graduate School of Engineering Kyoto University Japan

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A fuzzy behavior based microscopic traffic model

A fuzzy behavior based microscopic traffic model

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International Symposium on Mechatronics and Its Applications, ISMA

作者： M.A. Tavallaei S. Khanmohammadi I. Hasanzadeh Control Engineering Department Faculty of Electrical and Computer Eng University of Tabriz Tabriz Iran

This paper deals with the problem of a human behavior based Microscopic Traffic Model. In this work, a fuzzified two point model is implemented for modeling the low level control behavior and a Fuzzy Multi Criteria Decision Making is implemented for modeling the high level control actions of the driver. As a result, different influential parameters such as the driver's age, mood, sex, etc. may be easily implemented in to the model and therefore guarantee a more natural outcome. This model can be used in automatically guided vehicles as a reference for natural driver behavior of individuals. The simulation results illustrate and verify the validity of the model.

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An efficient method for simulation of multiple catastrophic faults

An efficient method for simulation of multiple catastrophic ...

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IEEE International Conference on Electronics, Circuits and Systems (ICECS)

作者： Michal Tadeusiewicz Stanislaw Halgas Department of Electrical Electronic Computer and Control Engineering Technical University of Lodz Lodz Poland

The paper offers an efficient method for simulation of multiple catastrophic faults in AC circuits. The faulty elements are either open circuits or short circuits. The method is based on the well known Householder formula. The main achievement of the paper is a systematic method for performing the simulation of all combinations of the multiple catastrophic faults. The method includes two new procedures, enabling us to find very efficiently the node impedance matrix in the nominal circuit and inversions of some matrices corresponding to different fault combinations. The procedures are the crucial point of this approach and make it very efficient. Consequently the amount of computing power needed to carry out all the simulations is significantly reduced. A numerical example is provided.

关键词： Circuit faults Circuit simulation Computational modeling Admittance Circuit testing computer simulation Impedance Voltage Equations Fault diagnosis

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Tracing some temperature characteristics in diode-transistor circuits having multiple DC solutions

Tracing some temperature characteristics in diode-transistor...

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IEEE International Conference on Electronics, Circuits and Systems (ICECS)

作者： Michal Tadeusiewicz Stanislaw Halgas Department of Electrical Electronic Computer and Control Engineering Technical University of Lodz Lodz Poland

The paper is focused on the analysis of diode-transistor circuits having multiple DC solutions considering the thermal behavior of the chip. A feedback between the power dissipated inside the chip and temperature which affects the circuit parameters and consequently the solutions is taken into account. The paper extends some earlier results and offers an efficient algorithm for tracing the characteristic expressing an output signal in terms of the ambient temperature with the thermal constraint of the chip. The characteristic enable us to find all the DC solutions, allowing the thermal behavior of the chip, at different ambient temperatures. Two numerical examples illustrate the proposed approach.

关键词： Diodes Temperature dependence Voltage control engineering computing Circuit analysis computing Power engineering computing control engineering Circuit analysis Thermal engineering Feedback circuits

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Introducing an incremental learning method for fuzzy descriptor models to identify nonlinear singular systems

Introducing an incremental learning method for fuzzy descrip...

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2008 Mediterranean Conference on control and Automation, MED'08

作者： Mirmomeni, M. Lucas, C. Shafiee, M. Araabi, B.N. Control and Intelligent Processing Center of Excellence School of Electrical and Computer Eng. University of Tehran Tehran Iran Electrical Engineering Department Amirkabir University of Technology Tehran Iran School of Cognitive Sciences Institute for Studeils in Theoretical Physice and Mathematics Tehran Iran

ISBN: (纸本)9781424425051

Singular systems have been the subject of interest over the last two decades due to their many practical applications. But it has to be said that system identification of such system is still a challenging area because of the difficulty of identification of such systems for their complex structures. In addition, it seems that by developing a useful method for identification of singular system, one can use the useful property of such systems in describing the natural complex phenomena. This paper presents a novel methodology for identifying nonlinear singular systems from empirical data. Singular systems are idealized models for systems with slow and quick modes of change. However, their identification is a challenging problem even for the linear case. A new learning method, generalized locally linear model tree (GLoLiMoT) algorithm is introduced. The contribution of this paper is to provide a method for adjusting the parameters of fuzzy descriptor model, e.g. the splitting ratio and the standard deviation, the number of locally linear neurons or the number of linear singular systems for the consequent part in fuzzy descriptor model as well as the order of the singular system. By these modifications an accurate model of nonlinear singular system is obtained which is compared with several other methods in two case studies. Results depict the power of the proposed approach in describing nonlinear complex phenomena. © 2008 IEEE.

关键词： Trees (mathematics)

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