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34th Annual International Conference of the IEEE engineering-in-Medicine-and-Biology-Society (EMBS)

作者： Ripka, W. L. Ricieri, D. da V. Ulbricht, L. Neves, E. B. Stadnik, A. M. W. Romaneli, E. F. R. Electrical Engineering and Industrial Computing Program Federal University of Technology - Paraná Brazil Physical Education Department Federal University of Paraná Brazil Master Program in Biomedical Engineering Federal University of Technology - Paraná Brazil Federal University of Technology - Paraná. Brazil Physical Education Federal University of Technology - Paraná Brazil Control and Automation Engineering Federal University of Technology - Paraná Brazil

ISBN: (纸本)9781457717871

This study aimed to test a protocol of measurements based on Biophotogrammetry to Analysis of Respiratory Mechanics (BARM) in healthy children. Seventeen normal spirometric children (six male and 11 female) were tested. Their performed maneuvers of forced inspiratory vital capacity were recorded in the supine position. The images were acquired by a digital camera, laterally placed to the trunk. Surface markers allowed that the files, exported to CorelDraw (R) software, were processed by irregular trapezoids paths. Compartments were defined in the thoracic (TX), abdominal (AB) and the chest wall (CW). They were defined at the end of an inspiration and expiration, both maximum, controlled by a digital spirometer. The result showed that the measured areas at the inspiratory and expiratory periods were statistically different (p<0.05). It reflects the mobility of CW and compartments. In conclusion, the proposed method can identify the breathing pattern of the measured subject using images in two dimensions (2D).

关键词： respiratory mechanics chest wall respiratory movements photogrammetry children

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The stochastic semantics and verification for periodic control systems

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Science China(Information Sciences) 2012年第12期55卷 2675-2693页

作者： YANG MengFei 3,WANG Zheng 1,2,PU GeGuang 1,Qin ShengChao 4,GU Bin 2 & HE JiFeng 1 1 Shanghai Key Laboratory of Trustworthy computing,East China Normal University,Shanghai 200062,China 2 Beijing Institute of control engineering,Beijing 100190,China 3 China Academy of Space Technology,Beijing 100049,China 4 University of Teesside,TS1 3BA,UK 3. China Academy of Space Technology Beijing 100049 China1. Shanghai Key Laboratory of Trustworthy Computing East China Normal University Shanghai 200062 China2. Beijing Institute of Control Engineering Beijing 100190 China4. University of Teesside TS13BA Teesside UK

Periodic control systems(PCS) are widely used in the embedded industry like aerospace and *** systems usually run periodic tasks and respond to the external *** on our previous work on Mode diagram modeling(MDM) notations for specifying the periodic control system,we present the stochastic semantics for MDM in this *** stochastic semantics of MDM is based on the Markov *** semantics proposed here provides the basis for the satisfaction of formulae of the interval temporal logic(ITL) based specification language that is aimed to specify the properties of *** verify whether the system satisfies the ITL-based properties,we apply the statistical model checking technique to efficiently estimate the probability of the system satisfying the given property with a desired level of *** empirical experiments show that our approach is both effective and efficient.

关键词： periodic control system stochastic semantics statistical model checking

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On-the-Cloud computing: Challenges in controlling cloud resources

On-the-Cloud Computing: Challenges in controlling cloud reso...

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International Symposium on Collaborative Technologies and Systems

作者： Dan Ionescu School of Information Technology and Engineering Director of the Network Computing and Control Research Laboratory University of Ottawa Ottawa Canada

Cloud computing is defined as a pool of virtualized computer resources deployed and scaled-out quickly through the rapid provisioning of virtual or physical machines. Virtual machine services offered by cloud utility providers led to the creation of the ecosystem of cloud services as they enable customers to use computing resources based on the dynamic behaviour of the application and of the computer resource used. As the control system approach is more and more accepted by the computer research communities the perspective of implementing an adaptive resource provisioning and optimization looked attractive enough for investing efforts and human resources to move it from the theory benches to experimental implementations.

关键词： Educational institutions Cloud computing Computers Humans Algorithm design and analysis Computer architecture Information technology

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A novel self-adaptive fault-tolerant mechanism and its application for a dynamic pervasive computing environment

A novel self-adaptive fault-tolerant mechanism and its appli...

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作者： Cai, Haibin Peng, Chao Jiang, Linhua Zhang, Yue Shanghai Key Laboratory of Trustworthy Computing Beijing Jiaotong University Beijing China State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing China Software Engineering Institute East China Normal University Shanghai China

ISBN: (纸本)9780769546698

In pervasive computing system, the increasing dynamic and complexity of software and hardware resources and frequentative interaction among function components make fault-tolerant design very challenging. In this paper, we propose a novel self-adaptive fault-tolerant mechanism for a dynamic pervasive computing environment such as mobile ad hoc network. In our approach, the self-adaptive fault-tolerant mechanism is dynamically built according to various types of detected faults based on continuous monitoring and analysis of the component states. We put forward the architecture of fault-tolerant system and the policy-based fault-tolerant scheme, which adopts three-dimensional array of core features to capture spatial and temporal variability and the Event-Condition-Action rules. The mentioned mechanism has been designed and implemented as self-adaptive fault-tolerant middleware, shortly called SAFTM, on a preliminary prototype for a dynamic pervasive computing environment such as mobile ad hoc network. We have performed the experiments to evaluate the efficiency of the fault-tolerant mechanism. The results of the experiments show that the performance of the self-adaptive fault tolerant mechanism is realistic. © 2012 IEEE.

关键词： Dynamics

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Fault detection in a wastewater treatment plant based on neural networks and PCA

Fault detection in a wastewater treatment plant based on neu...

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2012 20th Mediterranean Conference on control and Automation, MED 2012

作者： Fuente, M.J. Garcia-Alvarez, D. Sainz-Palmero, G.I. Vega, P. Department of Systems Engineering Control. University of Valladolid EII C/ Paseo del Cauce s/n 47011 Valladolid Spain Department of Computing and Automation University of Salamanca ETSII Av. Fernando Ballesteros 2 37700 Bejar Spain

ISBN: (纸本)9781467325318

In this paper, a neural network PCA method that integrates neural networks (NN) and principal component analysis (PCA) is used to detect faults in a wastewater treatment plant. The neural networks are used to calculate a non-linear and dynamic model of the process in normal operating conditions. PCA is used to generate monitoring charts based on the residuals calculated as the difference between the process measurements and the output of the networks. It can evaluate the current performance of the process and detects the faults. This technique has been applied to the simulation of a benchmark of a biological wastewater treatment process, a highly non-linear process. The simulation results clearly show the advantages of using this NNPCA monitoring in comparison with classical PCA monitoring. © 2012 IEEE.

关键词： Principal component analysis

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Stochastic search strategies in 2D using agents with limited perception

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IFAC Proceedings Volumes 2012年第22期45卷 650-654页

作者： David Puljiz Maja Varga Stjepan Bogdan University of Zagreb Faculty of Electrical Engineering and Computing Department of Control and Computer Engineering LARICS–Laboratory for Robotics and Intelligent Control Systems Zagreb Croatia Laboratory of Intelligent Systems Ecole Polytechnique Federale de Lausanne 1015 Lausanne Switzerland

Animals use stochastic search strategies to find a potential nest or to localize the food source. Animals do not rely much on the environmental cues or their sensory inputs. Since their cognitive capabilities are rather limited, search strategies are usually simplistic and stochastic. And yet such simple search strategies result in high efficiency in finding potential targets in limited time intervals. Similar problems with perception of the environment and limited computational power and sensory inputs are observed on the mobile robots used in search scenarios. In spite of their limitations, such robotic systems usually perform deterministic search strategies which heavily depend on environmental cues and sensory input. The research question we are addressing in this paper is which stochastic search strategy has the best performance in terms of area coverage and can stochastic search strategies outperform deterministic search strategies.

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Flecs, a flexible coupling shell - Parallel application to fluid-structure interaction

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AIP Conference Proceedings 2012年第1期1504卷 1113-1118页

作者： Margreet Nool Erik Jan Lingen Sander van Zuijlen Martijn Stroeven Hester Bijl CWI Dept. Computing and Control Amsterdam Netherlands Habanera Software company Delft Netherlands TU Delft Fac. Aerospace Engineering Delft Netherlands

In this paper we discuss the second version of Flecs, a generic, open-source coupling shell that can be used to join two or more arbitrary solvers. In general multidisciplinary computations are very computing-intensive. A remedy against long computing times is large-scale parallelism. The challenge of the present parallelization work is to obtain acceptable computing times and to get rid of severe memory requirements that exist on sequential machines, for the generic flow problems at hand. The aim is to provide a flexible platform for developing new data transfer algorithms and coupling schemes.

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Artificial power system based on ACP approach

Artificial power system based on ACP approach

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2012 IEEE International Conference on Service Operations and Logistics, and Informatics, SOLI 2012

作者： Dong, Xisong Xiong, Gang Hou, Jiachen Fan, Dong State Key Laboratory of Management and Control for Complex Systems Beijing Engineering Research Center of Intelligent Systems and Technology Institute of Automation Beijing China Dongguan Research Institute of CASIA Cloud Computing Center Chinese Academy of Sciences Songshan Lake Dongguan China

ISBN: (纸本)9781467324007

Modern power system is a typical multi-level complex giant system consisting of physical infrastructures, human operators, and social resources, etc. The conventional analytical methods and simulation systems can't provide sufficient guidance for its operation and management, because they are mainly based on physical models, natural phenomenon, or other existing control methods which are based on reductionism. ACP approach, mainly consisting of artificial systems (A), computational experiments (C) and parallel execution (P), which is based on holism and complex system theory, has its specific advantages in the research on power systems. In this article, ACP approach is applied to build up artificial power system (APS) by using multi-agent complex networks. With the help of APS, actual power system's control, scheduling, optimization and management can be improved further via providing theoretical guidance and technical support for the rolling optimizations in normal situations and emergency management in abnormal situations. As a case study, an APS constructed with actual data from North China power grid is constructed and its vulnerability is simulated and analyzed under random, dynamic and static attacks. © 2012 IEEE.

关键词： Complex networks

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Full- and Reduced-Order Filter Design for Discrete-Time T-S Fuzzy Systems with Time-Varying Delay

Full- and Reduced-Order Filter Design for Discrete-Time T-S ...

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IEEE Annual Conference on Decision and control

作者： Xiaojie Su Peng Shi Ligang Wu Hamid Reza Karimi Rongni Yang Space Control and Inertial Technology Research Center Harbin Institute of Technology Department of Computing and Mathematical Sciences University of Glamorgan Department of Engineering Faculty of Engineering and Science University of Agder School of Control Science and Engineering Shandong University

ISBN: (纸本)9781467320658

This paper is focused on the problem of H_∞ filtering for a class of discrete-time T-S fuzzy time-varying delay systems. Our interest is how to design full- and reduced-order filters that guarantee the filtering error system to be asymptotically stable with a prescribed H_∞ performance. Sufficient conditions for the obtained filtering error system are proposed by applying an input-output approach and a two-term approximation method, which is employed to approximate the time-varying delay. The corresponding full and reduced-order filter design is cast into a convex optimization problem, which can be efficiently solved by standard numerical algorithms.

关键词： error system reduced order filters Fuzzy systems time varying discrete-time Filtration filter design

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Electrothermal effect on the electrical resistivity of single carbon nanocoils

Electrothermal effect on the electrical resistivity of singl...

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International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO)

作者： Ming-Dao Wu Cheng-Chun Huang Wen-Pin Shih Sergej Fatikow Department of Mechanical Engineering National Taiwan University Taipei Taiwan Division of Microrobotics and Control Engineering Department of Computing Science University of Oldenburg Oldenburg Germany

We electrothermally determined the internal electrical resistivity of a single carbon nanocoil (CNC) which was assembled on the AFM tip. A heat-transfer modeling which considered the Joule's heat was employed to extract the electrical resistivity. The current and resistance of the loop circuits were applied in the calculation in which the thermal measurement was not required. During the electrical measurement, the overall resistance of the heating loop depended on the current variation and decreased abruptly at the beginning of the measurement. It was suggested that the contact resistances between the CNC and metal electrodes were eliminated due to the shortened difference of the work functions between the two materials. The developed electrothermal model agreed well with the experiment at steady state and gave the CNC resistivity of 1.64*10 -4 ~8.81*10 -4 Ω-m. This result confirmed the amorphous phase of the synthesized CNC.

关键词： Computer numerical control Resistance Temperature measurement Electrical resistance measurement Carbon Current measurement

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