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2013 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2013

作者： Zhong, Wei Zhang, Qin Ye, Long Liang, Lili Dong, Lihong Key Lab of Media Audio and Video of Ministry of Education Communication University of China Beijing 100024 China Faculty of Automation and Information Engineering Xi'an University of Technology Xi'an 710048 China Department of Computer and Information Engineering Jiangxi Agricultural University Nanchang 330045 China

ISBN: (纸本)9781479910274

In this paper, a simple but effective method is proposed for image spectrum decomposition and denoising, due to the fact that the image cannot be decomposed flexibly in a transform domain. According to its spectrum distribution, the image decomposition is carried out by merging the corresponding filters of a uniform cosine-modulated filter bank, resulting 2D separable nonuniform filter banks. This method performs efficiently when the power spectrum of the image is distributed concentratedly. Moreover, if the image is corrupted by a narrow-band noise in the region where its power spectrum is low, the noise can be easily detected and removed by using the proposed idea of spectrum decomposition. A simulation of image Barbara is given to demonstrate that the proposed method is capable of achieving good performance in decomposing the power spectrum and removing the narrow-band noise involved. © 2013 IEEE.

关键词： Power spectrum

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Modeling and formal analysis of urban road traffic

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AIP Conference Proceedings 2013年第1期1558卷 1408-1411页

作者： Camelia Avram José Machado Adina Aştilean Department of Automation Automation and Computer Science Faculty TUCN Cluj Napoca Romania CT2M Research Centre Mechanical Engineering Department University of Minho Guimarães Portugal

Modern life in cities leads to complex urban traffic road and, sometimes, to go from one point to another, in a city, is a hard and very complex task. The use of assisted systems for helping drivers on their task of reaching the desired destination is being common, mainly systems like GPS location systems or other similar systems. The main gap of those systems is that they are not able to assist drivers when some unexpected changes occur, like accidents, or another unexpected situations. In this context, it would be desirable to have a dynamic system to inform the drivers, about everything that is happening "online". This work is inserted in this context and the work presented here is one part of a bigger project that has, as main goal, to be a dynamic system for assisting drivers under hard conditions of urban road traffic. In this paper is modeled, and formally analyzed, the intersection of four street segments, in order to take some considerations about this subject. This paper presents the model of the considered system, using timed automata formalism. The validation and verification of the road traffic model it is realized using UPPAAL model-checker.

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ISA Standard Simulation Model Generation Supported by Data Stored in Low Level Controllers

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Procedia CIRP 2013年 12卷 432-437页

作者： G. Popovics L. Monostori Fraunhofer Project Center on Production Management and Informatics Computer and Automation Research Institute Hungarian Academy of Sciences Faculty of Mechanical Engineering Budapest University of Technology and Economics

One of the most widespread techniques to evaluate various aspects of a manufacturing system is discrete-event simulation (DES). However, building a simulation model of a manufacturing system is a difficult task and needs great resource expenditures. Automated data collection and model buildup can drastically reduce the time of the design phase as well as support model reusability. Since most of the manufacturing systems are controlled by low level controllers (e.g., PLCs, CNCs) they inherently store structure and control logic of the system to be modeled by a DES system. The paper introduces an ongoing research of PLC code processing method for automatic ISA standard simulation model generation of a conveyor system of a leading automotive factory. Results of the validation process and simulation experiments are also described through a case study.

关键词： Programmable logic controllers manufacturing computer simulation automatic recognition.

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A complex agent network model for HIV transmission among drug users sharing syringes

A complex agent network model for HIV transmission among dru...

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Chinese Control Conference (CCC)

作者： Chuntao Wei Shouming Zhang Yeqing Zhao Guihong Bi Faculty of Information Engineering and Automation Kunming University of Science and Technology 650500 China Faculty of Computer and information Engineering of Anyang Normal University 455002 China Faculty of Electric Power Engineering Kunming University of Science and Technology 650500 China

Injecting drug users (IDUs) sharing syringes is an important mode of Human Immunodeficiency Virus (HIV) transmission. Intervention Measures such as free syringe exchange programs,voluntary counseling and HIV testing, free antiretroviral treatment (ART) and changes in the number of the total group play an important role in HIV transmission dynamics and success of prevention. This paper presents a complex agent network model for simulating the interaction and evolution of IDUs individual behaviors, IDUs networks and HIV prevention interventions. In the model, the number of the total group changes over time and each individual agent on network has his own specified information and rules to react to HIV prevention interventions. Exploratory simulation results are consistent with empirical studies demonstrating that the effectiveness of a combination of interventions, including free syringe exchange programs,voluntary counseling and HIV testing and ART during changing the number of the total group over time . Our model can be used to identify potential collective benefits of combination prevention interventions for HIV transmission.

关键词： Human immunodeficiency virus Electronic mail Drugs Educational institutions Testing Employee welfare Subspace constraints

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The design and implementation of the metro driving simulation system based on virtual reality

The design and implementation of the metro driving simulatio...

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IEEE International Conference on Intelligent Rail Transportation (ICIRT)

作者： Zhurong Wang Yang Liu Xinhong Hei Guo Xie Faculty of Computer Science and Engineering Xi'an University of Technology Xi'an P.R. China Faculty of Automation and Information Engineering Xi'an University of Technology Xi'an P.R. China

Since London opens the first metro in 1863, more than 100 cities have opened metro around the world, and the total metro lines have increased to more than 6000 km. The metro control system also has been greatly developed, especially in the field of its new technologies, such as automatic driving and automatic control. With the popularity of the metro, railway traffic related technical personnel's demand also increases. In the light of the metro operation equipments expensive and the particularity of the metro system, using the metro equipments to train technical personnel is not feasible. In this paper, a simulation driving system that we developed is introduced in order to display its features, system framework and technical route. The implementation of this system, especially the part of the three-dimensional scene, is mainly depending on reality technology. After finishing the simulated driving function, this system which has been put in use realizes the training function.

关键词： Solid modeling Training Three-dimensional displays Virtual reality Load modeling Software Servers

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Hardware-based parallel firefly algorithm for embedded applications

Hardware-based parallel firefly algorithm for embedded appli...

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2013 NASA/ESA Conference on Adaptive Hardware and Systems, AHS 2013

作者： Muñoz, Daniel M. Llanos, Carlos H. Dos Santos Coelho, Leandro Ayala-Rincón, Mauricio Electronics Engineering Graduate Program Faculty of Gama University of Brasilia Brasilia DF Brazil Department of Mechanical Engineering Automation and Control Group/GRACO University of Brasilia Brasilia DF Brazil Industrial and Systems Engineering Graduate Program LAS/PPGEPS Pontifical Catholic University of Parana Curitiba Parana Brazil Departments of Computer Science and Mathematics University of Brasilia Brasilia DF Brazil

ISBN: (纸本)9781467363839

The firefly algorithm (FA) is a new population-based metaheuristic bioinspired on the behavior of the flashing characteristics of fireflies. As a population-based algorithm, the FA suffers from large execution times specifically for embedded optimization problems with computational limitations. For reducing execution times we propose a hardware parallel architecture of the FA algorithm that facilitates the implementation in Field Programmable Gate Arrays (FPGAs). In addition, this work proposes the application of the opposition-based learning (OBL) approach to the FA algorithm. The respective hardware implementation (HPOFA) was mapped into a Virtex5 FPGA device and numerical experiments using four well-known benchmark problems demonstrate that the opposition-based approach allows the FA algorithm to improve its functionality, preserving the swarm diversity and avoiding the premature convergence problem. Synthesis results point out that the HPOFA architecture is effectively mapped in hardware and is suitable for embedded applications. © 2013 IEEE.

关键词： Parallel architectures

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Using agents in virtual environments to assist controllers to manage multiple assets

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1st International Workshop on Cognitive Agents for Virtual Environments, CAVE 2012, Held at AAMAS 2012

作者： Beer, Martin D. Alboul, Lyuba Norling, Emma Wallis, Peter Communication and Computing Research Centre Faculty of Arts Computing Engineering and Sciences Sheffield Hallam University Sheffield United Kingdom Centre for Automation and Robotics Research Faculty of Arts Computing Engineering and Sciences Sheffield Hallam University Sheffield United Kingdom Centre for Policy Modelling Manchester Metropolitan University Manchester United Kingdom NLP Group Dept. of Computer Science University of Sheffield Sheffield United Kingdom

ISBN: (纸本)9783642364433

Search and rescue operations often require complex coordination of a range of resources, including human and robotic resources. This paper discusses a proposed new framework that allows agent technology to be used in conjunction with a virtual environment to provide a human controller with an effective visualisation of the distribution of a collection of autonomous objects, in our case, Unmanned Aerial Vehicles (UAVs) so that they can be managed in a way that allows them to successfully complete the task in the minimum possible time. It is our contention that to do this effectively there needs to be two-way initiation of verbal conversations, but that it is not necessary for the system to completely understand the conversations required. An example scenario is presented that illustrates how such a system would be used in practice, illustrating how a single human can communicate with a swarm of semi-autonomous actors verbally and envisage their activities in a swarm based on the visual cues provided within the virtual environment. An agent-based solution is proposed that meets the requirements and provides a command station that can manage a search using a collection of UAVs effectively. © 2013 Springer-Verlag.

关键词： Virtual reality

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Guideline to choose a forecasting tool with fuzzy logic support

Guideline to choose a forecasting tool with fuzzy logic supp...

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IEEE Conference on Industrial Electronics and Applications (ICIEA)

作者： Otilia Elena Dragomir Florin Dragomir Veronica Stefan Automation Computer Science and Electrical Engineering Department Valahia University of Targoviste Targoviste Romania Faculty of Economics Valahia University of Targoviste Targoviste Romania

The aim of this paper is to dress up a guideline to choose a suitable forecasting technique with fuzzy logic support. First of all, the smart grids, framework for low-voltage networks with distributed energy from renewable energy sources, are presented with advantages, limitations and challenges. In the second part, a cross view of the forecasting problem is given in order to establish a common perception of it. In this way, forecasting approaches are studied from both the producers and consumers points of view. Finally, a guideline to choose a forecasting tool with fuzzy logic is given as a supporting tool for low-voltage with distributed energy generation networks capacity allocation and congestion management. With this "decision support tool" the energy market energy participants should allow a correct prediction of the available capacity of transmission lines and cross-border interconnections, so that it can be efficiently allocated to market actors.

关键词： Decision support systems Conferences Industrial electronics Erbium

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Preface

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2014年 8875卷

作者： Narasimha Murty, M. He, Xiangjian Raghavendra Rao, C. Weng, Paul Department of Computer Science and Automation Indian Institute of ScienceBangalore Bangalore India Faculty of Engineering and Information Technology University of Technology Sydney Sydney Australia Department of Computer and Information Sciences University of Hyderabad Hyderabad India LIP6 University Pierre et Marie Curie Paris France

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Adaptive Prefilter Design for Control of Quasistatic Microscanners

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IFAC Proceedings Volumes 2013年第5期46卷 197-206页

作者： Klaus Janschek Thilo Sandner Richard Schroedter Matthias Roth Institute of Automation Faculty of Electrical and Computer Engineering Technical University Dresden Dresden Germany Fraunhofer Institute for Photonic Microsystems (FhG-IPMS) AMS Microscanner R&D Dresden Germany

This paper describes an open loop control approach with analog impedance feedback damping for quasistatic MEMS microscanners based on electrostatic comb transducers. The control task is determined by high dynamic input trajectory following in the presence of an extremely lightly damped mechanical mass-spring system with nonlinear electromechanical characteristics. The approach presented in this paper makes use of a model-based design approach resulting in a nonlinear adaptive prefilter for optimally preshaping of customized trajectory inputs. The open loop control is augmented by an easy to implement resistive analog impedance feedback scheme that introduces electromechanical damping and increases robustness against physical parameter uncertainties of the MEMS microscanner assembly. The paper outlines the underlying MEMS microscanner technology, it describes the mathematical model based on ANSYS computation, and it discusses in detail the proposed control concepts. Simulations and experimental results prove the applicability of the control approach.

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