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2012 5th International Symposium on Resilient Control systems, ISRCS 2012

作者： Rieger, Craig Zhu, Quanyan Başar, Tamer Instrumentation Control and Intelligent Systems Idaho National Laboratory Idaho Falls ID United States Coordinated Science Laboratory Department of Electrical and Computer Engineering University of Illinois at Urbana-Champaign 1308. W. Main St. Urbana IL United States

ISBN: (纸本)9781467301633

The implementation of automated regulatory control has been around since the middle of the last century through analog means. It has allowed engineers to operate the plant more consistently by focusing on overall operations and settings instead of individual monitoring of local instruments (inside and outside of a control room). A similar approach is proposed for cyber security, where current border-protection designs have been inherited from information technology developments that lack consideration of the high-reliability, high consequence nature of industrial control systems. Instead of an independent development, however, an integrated approach is taken to develop a holistic understanding of performance. This performance takes shape inside a multi-agent design, which provides a notional context to model highly decentralized and complex industrial process control systems, the nervous system of critical infrastructure. The resulting strategy will provide a framework for researching solutions to security and unrecognized interdependency concerns with industrial control systems. © 2012 IEEE.

关键词： Networked control systems

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SmartParks for short term power flow control in smart grids

SmartParks for short term power flow control in smart grids

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IEEE International Electric Vehicle Conference (IEVC)

作者： Ganesh Kumar Venayagamoorthy Real-Time Power and Intelligent Systems Laboratory Holcombe Department of Electrical and Computer Engineering Clemson University SC USA

Among other functions, the smart grid is a vehicle to maximize the penetration of wind power by exploiting the use of energy storage devices in order to maximize the utilization of renewable energy and bring about maximum reduction in emissions. Large number of electric vehicles in a parking lot enabled to carry out vehicle-to-grid (V2G) transactions has been termed as a `SmartPark' by the author. The use of vehicle-to-grid technology, information technology and advanced computational methods can provide short term real and reactive power support to overcome the drawback of the intermittent nature of renewable sources of electricity. This paper presents the intelligent control of SmartParks to enhance a smart grid's capability to compensate and mitigate active and reactive power fluctuations caused by the variability in wind power penetration in selected transmission lines and network buses.

关键词： Wind power generation Wind farms Voltage control Smart grids Fluctuations Reactive power Power transmission lines

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A novel feature extraction method for the classification of SAR images

A novel feature extraction method for the classification of ...

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IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： Örsan Aytekin Mehmet Koc Ilkay Ulusoy Computer Vision and Intelligent Systems Research Laboratory Department of Electrical and Electronics Engineering Middle East Technical University Ankara Turkey

This paper proposes a new method for the classification of synthetic aperture radar (SAR) images based on a novel feature vector. The method aims at combining intensity information of pixels with spatial information and structural relationships. Unlike classical approaches which define a static neighborhood and relate spatial information for each center pixel to all the pixels within that window, the local primitives (LPs) proposed in this study provide us with an adaptive neighborhood for each pixel. LPs correspond to a certain number of layers of local homogenous connected components. Using LPs, a feature vector (local primitive pattern, LPP) is constructed for each pixel. The feature vector includes information about the sizes and contrast differences of LPs within a disk as well as the repetitive frequency of LPs outside that disk. To test the efficiency of LPP, support vector machine (SVM) classification is utilized.

关键词： Quantization Synthetic aperture radar Support vector machine classification Feature extraction Remote sensing Training

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Recent advances on the energy management of a Hybrid Electric Vehicle

Recent advances on the energy management of a Hybrid Electri...

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Mediterranean Conference on Control & Automation

作者： D. S. Efstathiou A. K. Petrou P. Spanoudakis N. C. Tsourveloudis K. P. Valavanis Intelligent Systems and Robotics Lab Technical University of Crete Chania Greece Machine Tools Laboratory Technical University of Crete Chania Greece Department of Electrical and Computer Engineering University of Denver Denver CO 80208 USA

ISBN: (纸本)9781467325301

This paper presents new innovative subsystems of the ER11 prototype urban vehicle which is powered by hydrogen fuel cells and ultra-capacitors. The subsystems described here are: 1) the energy management system, which is responsible for the optimization of the fuel efficiency and the increased mileage of the vehicle, 2) the driver's monitoring and control panel and 3) the power transmission system, which offers the possibility of continuous change of gear. The powertrain of the test-bed vehicle consists of an electric motor, a fuel (Η2) cell system, an ultra-capacitor bank and a DC/DC converter. Testing verified that the proposed energy management system is benefitted by the variable transmission of power leading to less fuel consumption.

关键词： Recent advances energy management Hybrid Electric Vehicle

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Agent-based cyber control strategy design for resilient control systems: Concepts, architecture and methodologies

Agent-based cyber control strategy design for resilient cont...

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International Symposium on Resilient Control systems, ISRCS

作者： Craig Rieger Quanyan Zhu Tamer Başar Instrumentation Control & Intelligent Systems Idaho National Laboratory Idaho USA Coordinated Science Laboratory and Department of Electrical and Computer Engineering University of Illinois at Urbana-Champaign Urbana IL

关键词： Control systems computer security Sensors Process control Software Control theory

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A novel swarm intelligence algorithm and its application in solving wireless sensor networks coverage problems

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Journal of Networks 2012年第12期7卷 2037-2043页

作者： Mo, Yuanbin Liu, Jizhong Wang, Baolei Jonathan Wu, Q.M. College of Mathematics and Computer Science Guangxi University for Nationalities Nanning 530006 China School of Mechanical and Electrical Engineering Institute of Robotics of Nanchang University Nanchang University Nanchang 330031 China Department of Electrical and Computer Engineering Computer Vision and Sensing Systems Laboratory University of Windsor Windsor N9B3P4 Canada

Wireless sensor networks (WSNs) have attracted a great deal of research due to their wide-range of potential applications. Sensor deployment and coverage problems are their important issues. This article briefly introduces the principle of swarm intelligence (SI). A novel SI algorithm based on information sharing of Particle Swarm Optimization (PSO) and diversity maintenance mechanism of Artificial Immune System (AIS) is designed and the model of coverage problems is given. Its applications in solving different deterministic and random coverage problems are given. The algorithm used in obtaining maximum coverage probability with given number of sensor nodes and minimum number of sensor nodes with required coverage probability of WSNs deterministic coverage, and determining the selected sensor nodes with coverage probability and connectivity requirement of WSNs random coverage, are analyzed in detail. The simulation results show the algorithm is practical. The applications of SI on K- coverage and connectivity problems in the future are also projected in the article. © 2012 ACADEMY PUBLISHER.

关键词： Swarm intelligence

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Estimating viewing angles in mobile street view search

Estimating viewing angles in mobile street view search

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IEEE International Conference on Image Processing

作者： Deli Pei Rongrong Ji Fuchun Sun Huaping Liu Department of Computer Science and Technology State Key Laboratory of Intelligent Technology and Systems Tsinghua National Laboratory for Information Science and Technology Tsinghua University Beijing China Department of Electrical Engineering Columbia University New York USA

Recent years have witnessed an exciting progress in mobile visual search with applications to location recognition and streaming augmented reality. Most existing works among them are deployed with reference images coming from street views in urban scene. In such scenario, an interesting yet untouched problem is how to determine the viewing angle of the visual query aside of search, which could benefit multidisciplinary applications such as purifying the visual matching and accelerating the streaming AR. In this paper, we study the viewing angle estimation by exploiting the visual appearance of the query, which might be further improved by incorporating the coarse mobile context such as gyro or compass information. Our main idea is to treat this problem as a scene classification problem, upon which the key design is an optimal visual signature to reveal diversity of different viewing angles. We introduce a novel layout based viewing angle descriptor, which is based on carefully designed spatial division as well as appearance feature like color, texture and gradient. We have validated our approach on our dataset containing 1232 street view images in the urban areas of Manhattan, New York City. We show that our proposed descriptor has outperformed several alternatives in holistic image representations, including GIST, HOG and bag-of-feature with spatial pyramid matching.

关键词： Mobile communication Visualization Cities and towns Estimation Urban areas Feature extraction Roads

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Fault Detection and Isolation for Inertial Measurement Units

Fault Detection and Isolation for Inertial Measurement Units

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IEEE Conference on Decision and Control

作者： S. Brás P. Rosa C. Silvestre P. Oliveira Laboratory of Robotics and Systems in Engineering and Science (LARSyS) Instituto Superior Técnico Universidade Técnica de Lisboa Lisbon Portugal Department of Electrical and Computer Engineering Faculty of Science and Technology University of Macau Macao China

This paper addresses the problem of Fault Detection and Isolation (FDI) for navigation systems equipped with sensors providing inertial measurements and vector observations. Two strategies are proposed. The first one takes advantage of existing hardware redundancy, providing sufficient conditions for the isolation of faults. The second approach exploits the analytical redundancy between the angular velocity measurements and the vector observations, by resorting to Set-Valued Observers (SVOs). The behavior of both strategies are illustrated in simulation.

关键词： Vectors Redundancy Noise Sensor systems Angular velocity Noise measurement

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Low Cost Tactile, Force and Size Feedback System for Surgical robotics

Low Cost Tactile, Force and Size Feedback System for Surgica...

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International Conference on Innovative engineering systems

作者： Muhammad Yaqoob Sardar Rushan Qaisrani Muhammad Waqas Yasar Ayaz Sohail Iqbal Sajid Nisar Robotics & Intelligent Systems Engineering (RISE) Lab Department of Robotics and Artificial Intelligence School of Mechanical & Manufacturing Engg (SMME) National University of Sciences and Technology (NUST) H-12 Campus Islamabad Pakistan. Department of Electrical Engineering School of Electrical Engg & Computer Sciences (SEECS) National University of Sciences and Technology (NUST) H-12 Campus Islamabad Pakistan.

ISBN: (纸本)9781467344401

Robotic manipulator is designed and analyzed at patient end which includes force and current sensors that allows the operator to get force, size and tactile feedback at the surgeon end. Three methods of feedback are used i.e. force sensors for exact force estimation, current sensing for tactile feedback and position estimation to replicate motion. The three mentioned methods are analyzed and developed on the PC. Graphs are obtained for objects of different strength and size by experiments on the gripper at the end of robotic manipulator. Master-Slave topology is used to attain some benefits over conventional control systems in term of ergonomics, accuracy and timing etc. Interactive GUI at master end shows us forces, size and motions at each joint of the slave unit. Gripper, yaw and pitch motion of robotic manipulator at slave or patient end is also controlled by surgeon using master controller.

关键词： Haptic Feedback force sensitive resistor (FSR) master-slave system programmable system on chip (PSoC)

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A fresh look at the validity of the diffusion approximation for modeling fluorescence spectroscopy in biological tissue

A fresh look at the validity of the diffusion approximation ...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society

作者： Chintha Chamalie Handapangoda Malin Premaratne Saeid Nahavandi with the Centre for Intelligent Systems Research Deakin University Geelong Victoria 3217 Australia with the Advanced Computing and Simulation Laboratory (A_XL) Department of Electrical and Computer Systems Engineering Monash University Clayton Victoria 3800 Australia malin.

ISBN: (纸本)9781424441198

Fluorescence has become a widely used technique for applications in noninvasive diagnostic tissue spectroscopy. The standard model used for characterizing fluorescence photon transport in biological tissue is based on the diffusion approximation. On the premise that the total energy of excitation and fluorescent photon flows must be conserved, we derive the widely used diffusion equations in fluorescence spectroscopy and show that there must be an additional term to account for the transport of fluorescent photons. The significance of this additional term in modeling fluorescence spectroscopy in biological tissue is assessed.

关键词： approximation fluorescence applications

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