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7th IFAC Conference on Manufacturing Modelling, Management, and control, MIM 2013

作者： Dumitrache, Ioan Caramihai, Simona Iuliana University Politehnica of Bucharest Automatic Control and System Engineering Dept. 060042 Bucharest Romania University Politehnica of Bucharest Control Engineering and Applied Informatics Dept. 060042 Bucharest Romania

ISBN: (纸本)9783902823359

The paper presents a conceptual model of the manufacturing enterprise of the future, which is centered on knowledge. It is introduced the concept of organizational wisdom, as an intelligence level that allows manufacturing enterprise to take sustainable decisions. Cyber-Physical Systems concept is the most promising approach to implement the knowledge/wisdom model of the enterprise. © IFAC.

关键词： Knowledge based systems

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26th Annual Computational Neuroscience Meeting (CNS*2017) of the Organization for Computational Neuroscience Antwerp, Belgium, July 15-20, 2017

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BMC NEUROSCIENCE 2017年第SUPPL 1期18卷 59-59页

作者： [Anonymous] Indiana University Purdue University Indianapolis Indianapolis IN 46032 USA Stark Neurosciences Research Institute Indiana University School of Medicine Indianapolis IN 46032 USA Department of Mathematics East Carolina University Greenville NC 27858 USA Jülich Supercomputing Centre Forschungszentrum Jülich 52425 Jülich Germany Future Systems Swiss National Supercomputing Centre 8092 Zurich Switzerland User Engagement and Support Swiss National Supercomputing Centre 6900 Lugano Switzerland Institut de Neurosciences des Systèmes Aix Marseille Univ 13005 Marseille France Simulation Lab Neuroscience Forschungszentrum Jülich Jülich Germany Department of Experimental Psychology Ghent University 9000 Ghent Belgium Donders Center for Cognitive Neuroimaging Radboud University 6525HR Nijmegen The Netherlands Department of Electrical Computer and Energy Engineering University of Colorado Boulder CO 80309 USA Department of Neurosurgery Johns Hopkins School of Medicine Baltimore MD 21287 USA Department of Neurology Johns Hopkins School of Medicine Baltimore MD 21287 USA Department of Otolaryngology Johns Hopkins School of Medicine Baltimore MD 21287 USA INSERM U968 Paris France Sorbonne Universités UPMC University Paris 06 UMR_S 968 Institut de la Vision Paris France CNRS UMR_7210 Paris France Department of Computer Architecture and Technology University of Granada (CITIC) Granada Spain Sorbonne Universités UPMC Univ Paris 06 INSERM CNRS Institut de la Vision Paris France Department of Adaptive Machine Systems Osaka University Osaka Japan Department of Computer Science University of Cergy-Pontoise Cergy-Pontoise France Department of Physics and Astronomy College of Charleston Charleston SC 29424 USA School of Physics Faculty of Science University of Sydney Sydney NSW 2006 Australia Center of Excellence for Integrative Brain Function Australian Research Council Sydney Australia Max Planck Institute for Human Cognitive and Brain Sciences Saxony Lei

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Multiple land mines localization using a wireless sensor network

Multiple land mines localization using a wireless sensor net...

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International Conference on Information Fusion

作者： Haj Chhadé Hiba Abdallah Fahed Mougharbel Imad Gning Amadou Mihaylova Lyudmila Julier Simon University of Technology of Compiègne Compiègne France Lebanese University Beyrouth Lebanon University College London Dept. of Computer Science London UK Dept. of Automatic Control and Systems Engineering Sheffield University of Sheffield UK University College London Dept. of Computer Science London UK

This paper considers the problem of localization of multiple land mines using information collected by a network of wireless sensors deployed in the area of interest. These sensors detect the concentration of explosive vapours, emanating from buried land mines, in the air and have a wireless transmission system for exchanging information with a treatment or fusion centre. One of the key contribution of this paper is to locate and estimate the emission rate of multiple land mines. Using a model for the transport of the explosive chemicals in the air, we formulate the inverse problem consisting in determining sequentially the positions and emission rates of the land mines knowing concentration measurements provided by the sensors. To solve the inverse problem, we present a first solution based on a Least Squares optimization approach and a second solution based on probabilistic Bayesian techniques using a Markov Chain Monte Carlo sampling scheme. These two approaches are tested and compared on simulated data.

关键词： Landmine detection Sensors Inverse problems Wireless sensor networks Chemicals Vectors Explosives

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ANFIS based Jacobian for a parallel manipulator mobility assistive device

ANFIS based Jacobian for a parallel manipulator mobility ass...

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UKACC International Conference on control (control)

作者： Ahmed Asker Omar Salah Ahmed M. R. Fath El-Bab Ahmed A. Ramadan Samy M. F. Assal Salvatore Sessa Ahmed Abo-Ismail School of Innovative Design Engineering Egypt-Japan University for Science and Technology Alexandria Egypt Mechanical Engineering Dept Assiut University Assiut Egypt Computer and Automatic Control Dept Tanta University Tanta Egypt Dept. of Production Engineering and Mechanical Design Tanta University Tanta Egypt

Nowadays parallel manipulators are used widely in bioengineering applications; this leads to many exciting expectations as well as challenges. The kinematic analysis of parallel manipulators with their differential kinematics yielding the Jacobian in a closed form is not a trivial task. In this paper a parallel manipulator based mobility assistive device called EJADII is analyzed to determine forward kinematics, inverse kinematics and closed-form Jacobian. An Adaptive Neuro-Fuzzy Inference System (ANFIS) is trained to estimate the Jacobian. This system would be useful when determination of the Jacobian in a closed-form is difficult to determine. The human motion during sit to stand captured by VICON experiment is used with two assisting scenarios to train and verify this system. Computer simulations show relatively good results of the proposed system.

关键词： Jacobian matrices Kinematics Actuators Joints Manipulators Equations Mathematical model

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CSMA over time-varying channels: Optimality, uniqueness and limited backoff rate 13

CSMA over time-varying channels: Optimality, uniqueness and ...

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14th ACM International Symposium on Mobile Ad Hoc Networking and Computing, MobiHoc 2013

作者： Yun, Se-Young Shin, Jinwoo Yi, Yung Dept. of Automatic Control KTH Sweden Dept. of Electrical Engineering KAIST Korea Republic of

ISBN: (纸本)9781450321938

Recent studies on MAC scheduling have shown that carrier sense multiple access (CSMA) algorithms can be throughput optimal for arbitrary wireless network topology. However, these results are highly sensitive to the underlying assumption on 'static' or 'fixed' system conditions. For example, if channel conditions are time-varying, it is unclear how each node can adjust its CSMA parameters, so-called backoff and channel holding times, using its local channel information for the desired high performance. In this paper, we study 'channel-aware' CSMA (A-CSMA) algorithms in time-varying channels, where they adjust their parameters as some function of the current channel capacity. First, we show that the achievable rate region of A-CSMA equals to the maximum rate region if and only if the function is exponential. Furthermore, given an exponential function in ACSMA, we design updating rules for their parameters, which achieve throughput optimality for an arbitrary wireless network topology. They are the first CSMA algorithms in the literature which are proved to be throughput optimal under time-varying channels. Moreover, we also consider the case when back-off rates of A-CSMA are highly restricted compared to the speed of channel variations, and characterize the throughput performance of A-CSMA in terms of the underlying wireless network topology. Our results not only guide a high-performance design on MAC scheduling under highly time-varying scenarios, but also provide new insights on the performance of CSMA algorithms in relation to their backoff rates and underlying network topologies. Copyright 2013 ACM.

关键词： Carrier sense multiple access

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Contraposition Nyquist Stability Criteria for Linear Time-Delayed Systems of Retarded Type

Contraposition Nyquist Stability Criteria for Linear Time-De...

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International Conference on control, Automation, Robotics & Vision

作者： Jun Zhou Xinbiao Lu Huimin Qian Dept. of Automatic Control Engineering Hohai Univ. Nanjing 211100 China

ISBN: (纸本)9781479952007

This paper reports some Nyquist-type criteria for exponential/asymptotical stability in linear time-delayed systems of retarded type, by introducing contraposition seperators into the return difference ratio relationships in feedbacks. The Nyquist criteria present necessary and sufficient stability conditions, delays-dependent, which can be interpreted similarly and examined graphically as we do for linear time-invariant systems. The suggested Nyquist criteria involve neither open-loop characteristic roots distribution nor encirclement/orientation of Nyquist loci, which are not available even approximately and finite-dimensionally in linear time-delayed systems. The Nyquist criteria can be easily applied to open-loop linear time-delayed systems. Examples are included to illustrate the results.

关键词： Nyquist criterion Nyquist stability graphically Linear root distribution

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Teaching robotics and virtual reality in a synergistic approach

Teaching robotics and virtual reality in a synergistic appro...

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2013 7th IEEE International Conference on e-Learning in Industrial Electronics, ICELIE 2013

作者： Buiu, Catalin Buga, Andreea Coman, Andreea Monica Dept. of Automatic Control and Systems Engineering Politehnica University of Bucharest Romania

ISBN: (纸本)9781479931811

This paper presents a successful implementation of an undergraduate robotics and virtual reality course that builds upon the synergies existing between these two areas in order to introduce computers and information technology students to some fundamental concepts, through the use of simulation, experiments on real robots and design of robotic creatures in virtual environments. Course objectives, methodological aspects and the main technical solutions are presented in detail. A survey has been proposed in order to evaluate the impact of this course, and parts of it are presented and commented. © 2013 IEEE.

关键词： Virtual reality

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Petri net approach for deadlock prevention in robot planning

Petri net approach for deadlock prevention in robot planning

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2013 IEEE 18th International Conference on Emerging Technologies and Factory Automation, ETFA 2013

作者： Kloetzer, Marius Mahulea, Cristian Colom, Jose-Manuel Dept. of Automatic Control and Applied Informatics Technical University Gh. Asachi of Iasi Romania Dept. of Computer Science and Systems Engineering Univ. of Zaragoza Spain

ISBN: (纸本)9781479908622

This paper provides a strategy for supervising the motion of some mobile robots that evolve in the same environment. Some regions of the environment are assumed to have a limited capacity in terms of the number of robots that can simultaneously occupy them, and a set of possible trajectories is available for each robot. The solution comprises the construction of a specific Petri net model for the available trajectories, and the use of resource-allocation techniques based on restricted-capacity regions and on deadlock-free execution. © 2013 IEEE.

关键词： Petri nets

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Second-order sliding-mode controller for higher-order DC-DC converters

Second-order sliding-mode controller for higher-order DC-DC ...

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IEEE Workshop on Computers in Power Electronics

作者： Ramon Leyva Dragan Maksimovic Rui Ling Dept. Electronic Electrical and Automatic Control Engineering Universitat Rovira i Virgili Tarragona. Spain Colorado Power Electronics Center ECEE Department University of Colorado Boulder Boulder CO College of Automation Chongqing University Chongqing China

The paper adapts the second-order sliding mode (SOSM) control technique to higher-order dc-dc converters. In particular, the paper presents an adaptation of this control technique for buck converters with input filter. The approach consists of regulating the converter output voltage by means of a state-machine similar to the basic SOSM controller, which is shown to perform well as long as the input filter is properly damped, thus ensuring the overall converter stability. Stability and fast dynamic responses are verified by simulations on a 5 V-to-1.3 V point-of-load buck converter with a damped LC input filter.

关键词： Switches Damping Power harmonic filters Trajectory Capacitors Integrated circuit modeling

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Hardware implementation on FPGA of two modulation techniques for three phase inverters

Hardware implementation on FPGA of two modulation techniques...

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2013 IEEE 9th International Conference on Intelligent Computer Communication and Processing, ICCP 2013

作者： Alecsa, B. Onea, A. Dept. of Automatic Control and Computer Engineering Technical University of Iaşi Iaşi Romania

ISBN: (纸本)9781479914937

This paper presents two modern modulation techniques applied to three phase inverters from a hardware implementation point of view. The considered techniques are the sinusoidal pulse width modulation with zero sequence injection and the space vector modulation. Both these techniques conduct to the same result regarding supply voltage usage efficiency and harmonic content of the resulted signals. The implementation was developed in Matlab-Simulink using the System Generator software, and validated through simulation. Both the modulation algorithms were implemented in hardware on a low cost FPGA, and the resulted designs are compared for resource usage efficiency, obtained speed and easiness of integration within a complex AC drive control system. © 2013 IEEE.

关键词： Pulse width modulation

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