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International Joint Conference on Neural Networks

作者： Karthikeyan Balasubramaniam Ganesh Kumar Venayagamoorthy Neville Watson Real-Time Power and Intelligent Systems Laboratory Holcombe Dept. of Elect. and Computer Engg. Clemson University Clemson SC 29634 USA Department of Electrical Engineering University of Canterbury Christchurch New Zealand.

ISBN: (纸本)9781467361279

Situational awareness (SA) in simple terms is to understand the current state of the system and based on that understanding predict how system states are to evolve over time. Predictive modeling of power systems using conventional methods is time consuming and hence not well suited for real-time operation. In this study, neural network (NN) based non-linear predictor is used to predict states of power system for future time instance. Required control signals are computed based on predicted state variables and control set points. In order to reduce computation the problem is decoupled and solved in a cellular array of NNs. The cellular neural network (CNN) framework allows for accurate prediction with only minimal information exchange between neighboring predictors. The predicted states are then used in computing stability metrics that give proximity to point of instability. The situational awareness platform developed using CNN framework extracts information from data for the next time instance i.e. a step ahead of time and maps this data with geographical coordinates of power system components. The geographic information system (GIS) provides a visual indication of operating status of individual components as well as that of the entire system.

关键词： Power Grids SA NN Power grids Cellular neural networks situational awareness Awareness power systems State variable cellular arrays REAL TIME OPERATION geographical coordinates CONTROL SIGNAL

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An Automatic Electroencephalography Blinking Artefact Detection and Removal Method Based on Template Matching and Ensemble Empirical Mode Decomposition

An Automatic Electroencephalography Blinking Artefact Detect...

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

作者： Paschalis A. Bizopoulos Tarik Al-Ani Dimitrios G. Tsalikakis Alexandros T. Tzallas Dimitrios D. Koutsouris Dimitrios I. Fotiadis Department Informatique et Telecommunication ESIEE-Paris LISV-Universite de Versailles Saint-Quentin-en-Yvelines Department of Informatics and Telecommunications Engineering University of Western Macedonia Unit of Medical Technology and Intelligent Information Systems Biomedical Engineering Laboratory School of Electrical and Computer Engineering National Technical University of Athens (NTUA) Unit of Medical Technology and Intelligent Information Systems Faculty of Material Science and Engineering University of Ioannina

ISBN: (纸本)9781457702150

Electrooculographic (EOG) artefacts are one of the most common causes of Electroencephalogram (EEG) distortion. In this paper, we propose a method for EOG Blinking Artefacts (BAs) detection and removal from EEG. Normalized Correlation Coefficient (NCC), based on a predetermined BA template library was used for detecting the BA. Ensemble Empirical Mode Decomposition (EEMD) was applied to the contaminated region and a statistical algorithm determined which Intrinsic Mode Functions (IMFs) correspond to the BA. The proposed method was applied in simulated EEG signals, which were contaminated with artificially created EOG BAs, increasing the Signal-to-Error Ratio (SER) of the EEG Contaminated Region (CR) by 35dB on average.

关键词： TEMPLATE MATCHING Empirical mode decomposition Artifacts Blinking handicrafts

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Key-frame extraction for video captured by smart phones

Key-frame extraction for video captured by smart phones

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IEEE International Conference on Robotics and Biomimetics

作者： Shuangshuang Ji Huaping Liu Bin Wang Fuchun Sun School of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology Shanghai China Department of Computer Science and Technology State Key Laboratory of Intelligent Technology and Systems Beijing P.R.China Beijing Baidu Netcom Science Technology Co. Ltd

ISBN: (纸本)9781479927456

In this paper, the key-frame extraction for video clips which are captured by smart phones are investigated. A weighted temporal consistent fuzzy clustering technology is used to cluster the video frames. The image-level feature and the orientation information are combined into the feature vector and the accelerate values are used to determine the weight. Such a method sufficiently exploits the spatio-temporal characterizes of the video clips captured by smart phones. The algorithm is implemented in a Sumsung Nexus S smart phone and we make an extensive experimental validation.

关键词： Smart phones Accelerometers Feature extraction intelligent sensors Acceleration Vectors

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Day Ahead Scheduling of Distribution System With Distributed Energy Resources Considering Demand Response and Energy Storage

Day Ahead Scheduling of Distribution System With Distributed...

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North American Power Symposium

作者： Mojtaba Khanabadi Sukumar Kamalasadan Power Energy and Intelligent Systems Laboratory (PEISL) Department of Electrical and Computer Engineering University of North Carolina at Charlotte

ISBN: (纸本)9781479912537

This paper propose a method for day-ahead optimization of distribution system with Distributed Energy Resources (DER's) and energy storage devices that allows a) increase market efficiency and b) damping the variations of DER's. The objective is to utilize energy storage to damp the variations in the grid considering market price and to increase the grid efficiency. First, the implementation of day-ahead optimization that will determine which generation unit including DER's should be utilized using next 24 hour load taking into consideration of renewable energy generation forecasting is discussed. Next, the utilization of energy storage to damp the energy variations in the grid is evaluated. The problem is formulated as Nonlinear Programming (NLP) with the objective of maximizing the social welfare of the grid. The results show that the proposed method can successfully fulfill the overall objectives.

关键词： energy storage distributed energy resources dispensing system Demand-Responsive Grid computing Energy sources absorption of shock Social Welfare Energy storage devices dinitrophenyl-aminopropyl-methylamine

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Real-Time Simulation for Active and Reactive Power Control of Doubly Fed Induction Generator

Real-Time Simulation for Active and Reactive Power Control o...

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North American Power Symposium

作者： Rabindra Maharjan Sukumar Kamalasadan Power Energy and Intelligent Systems Laboratory (PEISL) Department of Electrical and Computer Engineering University of North Carolina at Charlotte

ISBN: (纸本)9781479912537

In this paper real-time modeling and simulation of complete closed loop control of doubly fed induction generator (DFIG) for wind generation system is presented. Decoupled active power and reactive power control of DFIG is realized using the flux oriented vector control. Inner and outer loop controller at rotor side and the grid side converter is presented for the closed loop control of the DFIG using real-time digital simulator. The simulation is carried on OPAL-RT digital simulator which is based on RT-LAB platform with the models build in Simulink. Further full closed loop models are evaluated in an experimental test bed for the step response of active and reactive power (P and Q) change. The real-time modeling and evaluation shows the capability of fully closed loop control and has greater impact on real-world applications.

关键词： Doubly Fed Induction Generator (DFIG) Vector control Real time simulation

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A manually-actuated MRI compatible robotic manipulator for image-guided interventions

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Physica Medica 2014年 30卷 e55-e56页

作者： Eftychios G. Christoforou Christoforos Keroglou Andrew Webb Nikolaos V. Tsekos Ioannis Seimenis KIOS Research Center for Intelligent Systems and Networks University of Cyprus Cyprus Department of Electrical and Computer Engineering University of Cyprus Cyprus C.J. Gorter Center for High Field MRI Leiden University Medical Center Leiden Netherlands Medical Robotics Laboratory University of Houston Houston TX USA Med. Physics Lab Medical School Democritus University of Thrace Alexandroupolis Greece

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Frequency Stability and Control of a Power System with Large PV Plants Using PMU Information

Frequency Stability and Control of a Power System with Large...

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North American Power Symposium

作者： Abdlmnam Abdlrahem Ganesh K. Venayagamoorthy Keith A. Corzine Real-Time Power and Intelligent Systems (RTPIS) Laboratory Holcombe Dept. of Electrical and Computer Engineering Clemson University

ISBN: (纸本)9781479912537

Integrating large photovoltaic (PV) plants into the grid poses challenges to maintaining the system's stability during small and large disturbances. A PV system's output power fluctuates according to the weather conditions (irradiance and temperature), season, and geographic location. The power fluctuations of the PV plants raise frequency and voltage stability issues. This paper presents the impact of a large PV plant on the frequency stability of a power system under small and large disturbances. With automatic generation control and phasor measurement unit information, the power generations of conventional generators are adjusted to mitigate the frequency deviation. Furthermore, the effects of increased PV penetration in a given power system area are examined.

关键词： power systems Frequency stability Polydnaviridae Phasor measurement units System stability Automatic generation control Frequency deviation Energy sources Standing Orders

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An LMI-based finite-time tracker design using nonlinear sliding surfaces

An LMI-based finite-time tracker design using nonlinear slid...

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20th Iranian Conference on electrical engineering, ICEE 2012

作者： Mobayen, Saleh Johari Majd, Vahid Sojoodi, Mahdi Intelligent Control Systems Laboratory School of Electrical and Computer Engineering Tarbiat Modares University Tehran Iran

ISBN: (纸本)9781467311489

This paper offers a new nonlinear sliding surface to achieve robustness and high performance for uncertain MIMO linear systems. The proposed method improves the transient performance and steady state accuracy simultaneously in a finite time. Exponential boundedness and ultimately boundedness conditions in finite time are provided in the form of linear matrix inequalities (LMIs). The control law is designed to guarantee the existence of the sliding mode around the nonlinear surface, and the damping ratio of the closed-loop system is increased as the output approaches the set-point. A DC motor position tracking problem is considered as a case study. Simulation results are presented to show the effectiveness of the proposed method as a promising way for controlling similar nonlinear systems. © 2012 IEEE.

关键词： Sliding mode control

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Tracker design using composite nonlinear feedback with application to a DC servomotor

Tracker design using composite nonlinear feedback with appli...

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2012 3rd Power Electronics, Drive systems and Technologies Conference, PEDSTC 2012

作者： Mobayen, Saleh Majd, Vahid Johari Intelligent Control Systems Laboratory School of Electrical and Computer Engineering Tarbiat Modares University Tehran Iran

ISBN: (纸本)9781467301114

In this paper, the theory of a nonlinear control technique, i.e., the composite nonlinear feedback control is considered for robust tracking of a class of linear systems with time varying uncertain parameters and disturbances. This controller can guarantee that the tracking error decreases asymptotically to zero in the presence of time varying uncertain parameters and disturbances. For performance improvement of dynamical system, this proposed robust tracking controller consists of linear and nonlinear feedback parts without any switching element. The linear feedback law is designed to yield a closed loop system with a small damping ratio for the existence of a quick response. On the other hand, the nonlinear feedback law is designed to increase the damping ratio as the system output approaches the output of the reference model. Finally, the simulations of applying the control law on a DC servomotor positioning system are given to illustrate the validity of the results developed in this paper. © 2012 IEEE.

关键词： Closed loop systems

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REAL-TIME SUPER-RESOLUTION FOR DIGITAL ZOOMING USING FINITE KERNEL-BASED EDGE ORIENTATION ESTIMATION AND TRUNCATED IMAGE RESTORATION

REAL-TIME SUPER-RESOLUTION FOR DIGITAL ZOOMING USING FINITE ...

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IEEE International Conference on Image Processing

作者： Wonseok Kang Jaehwan Jeon Eunsung Lee Changhun Cho Junghoon Jung Taechan Kim Aggelos K. Katsaggelos Joonki Paik Image Processing and Intelligent Systems Laboratory Graduate School of Advanced Imaging Science Multimedia and Film Chung-Ang University Seoul Korea System LSI Samsung Electronics Co. Ltd Suwon Korea Department of Electrical Engineering and Computer Science Northwestern University Evanston IL 60208 USA

ISBN: (纸本)9781479923427

This paper presents a novel real-time super-resolution (SR) method using directionally adaptive image interpolation and image restoration. The proposed interpolation method estimates the edge orientation using steerable filters and performs edge refinement along the estimated edge orientation. Bi-linear and bi-cubic interpolation filters are then selectively used according to the estimated edge orientation for reducing jagging artifacts in slanting edge regions. The proposed restoration method can effectively remove image degradation caused by interpolation using the directionally adaptive truncated constrained least-squares (TCLS) filter. The proposed method provides high-quality magnified images which are similar to or better than the result of advanced interpolation or SR methods without high computational load. Experimental results indicate that the proposed system gives higher peak-to-peak signal-to-noise ratio (PSNR) and structural similarity (SSIM) values than the state-of-the-art image interpolation methods.

关键词： Super-resolution image interpolation image restoration digital zooming

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