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作者： Zhabelova, Guinara Vyatkin, Valeriy Dubinin, Viktor Department of Computer Science Electrical and Space Engineering Lulea Tekniska Universitet Lulea Sweden Department of Electrical Engineering and Automation Aalto University Helsinki Finland University of Penza Penza Russia

ISBN: (纸本)9781479940325

Agent technology in the power system domain is the realm of theory and laboratory simulation. Agent-based systems, due to their complexity of concept and design, may appear difficult to implement and maintain, and hence more expensive, which is a prohibiting factor against using the new technology. Designing a decision-making system for an agent is one of the most complex tasks in the development of agent-based systems. Designing a decision-making system enabling proactive behaviours while maintaining reasonable complexity is a challenge. This paper proposes an deliberative decision making system for an industrial agent which allows pro-active behaviour of the agent while maintaining reasonable complexity. It employs a combination of practical and procedural reasoning principles. The formal definition of the proposed deliberative layer is derived in the paper. The procedural reasoning is based on IEC 61850 Logical Node concept and implemented with IEC 61499 reference architecture. The proposed agent architecture is demonstrated on the Fault Location Isolation and Supply Restoration application and validated via so-simulation with Matlab model of the sample distribution network. © 2014 IEEE.

关键词： Decision making

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Bio-syncretic Tweezer: 3D Manipulator Actuated by Microorganisms

Bio-syncretic Tweezer: 3D Manipulator Actuated by Microorgan...

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IEEE International Conference on Robotics and Biomimetics

作者： Chuang Zhang Shuangxi Xie Wenxue Wang Ning Xi Yuechao Wang Lianqing Liu State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 China and University of Chinese Academy of Sciences Beijing 100049 China State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Science Shenyang 10016 China Department of Electrical and Computer Engineering Michigan State University East Lansing Michigan 48824 USA State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 China

ISBN: (纸本)9781467396769

Advancement in micro/nano-technology has improved the development of bio-syncretic micro-manipulators. But there are still some challenges including the efficiency, precision and flexibility that constrain the application of micro-manipulators. In this work, a bio-tweezer system is proposed that could flexibly manipulate micro objects in three dimensions with opto-induced bio-actuation by high-density microorganisms. Based on the Langevin equation, a mathematical model considering the hydrodynamics and similar Brownian motion principle was proposed to analyze the performance of manipulation, and, was verified by implementing the experiments to move micro particles in the two-dimension plane and to rotate asymmetrical objects around one axis. This work is helpful for quantitative understanding of micro/nano-manipulation actuated by microorganisms.

关键词： constrain application micro-manipulators

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A new H-bridge NNPC converter for 10kV class motor drives

A new H-bridge NNPC converter for 10kV class motor drives

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作者： Narimani, Mehdi Wu, Bin Tian, Kai Cheng, Zhongyuan Zargari, Navid Reza Dept. of Electrical and Computer Engineering Ryerson University TorontoON Canada Medium Voltage RandD Department Rockwell Automation CambridgeON Canada

ISBN: (纸本)9781479940325

This paper presents a new seven-level voltage source converter (VSC) for high-power medium-voltage (MV) motor drives. The proposed topology is composed of H-bridge connection of two nested neutral-point-clamped (NNPC) converters called 7L-HNNPC converter. This converter has interesting features such as operating over a wide-range of output voltages particularly for a range of (10kV-15kV) without the need for connecting power semiconductor in series, high quality output voltage, less number of components in compare to other classical seven-level topologies. A novel SPWM technique has been developed for the proposed 7L-HNNPC converter to control and balance of the flying capacitors. The outstanding property of the control strategy is that the control can be applied independently to each leg of the converter that reduces the complexity of the controller significantly. The performance of the proposed converter is studied under different operating conditions in the MATLAB/Simulink environment. The feasibility of the proposed converter is evaluated experimentally on a scale-down prototype. © 2014 IEEE.

关键词： Topology

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Skeleton extraction via structure-adaptive anisotropic filtering 14

Skeleton extraction via structure-adaptive anisotropic filte...

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6th International Conference on Internet Multimedia Computing and Service, ICIMCS 2014

作者： Du, Xiaofeng Zhu, Shunzhi Li, Jianmin School of Computer and Information Engineering Xiamen University of Technology Xiamen 361024 China Department of Automation Xiamen University Xiamen 361005 China

ISBN: (纸本)9781450328104

Skeletonization of gray-scale images is a challenging problem in computer vision due to the non-uniform width of shape and the clutter background. This paper presents a novel approach of skeletonization for gray-scale images directly from original image based on anisotropic Gaussian filter. To deal with the non-uniform width of natural object parts, we adapt the shape of filter kernel to local gradient feature. The orientation of filter is firstly estimated based on local structure tensor, and then the scale is calculated based on gradient vector flux. After that, the anisotropic Gaussian filter is performed on the image. The skeleton strength map is defined by the gradient vector flux measure. Finally, thin and binary skeleton is obtained by non- maximum suppression the skeleton strength map. Our method performs well on both binary and gray image in skeleton extraction even for clutter image. Copyright 2014 ACM.

关键词： Extraction

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Analysis and assessment of microgrid stability using the Nu gap approach

Analysis and assessment of microgrid stability using the Nu ...

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作者： Alfares, Abdulgafor Sayed-Ahmed, Ahmed Department of Electrical and Computer Engineering Marquette University Milwaukee United States Rockwell Automation Standard Drives Group Mequon United States

ISBN: (纸本)9781479956982

In this paper, a robust control system analysis of an isolated microgrid is introduced. This analysis is based on the concept of multiloop stability margin, and the Nu gap approach. This approach helps the system's designer to ensure system stability under varying load conditions assuming a conventional cascaded control structure that employs an outer voltage control loop and an inner current control loop. Analysis and nonlinear detailed time domain simulation results are included. © 2014 IEEE.

关键词： Robust control

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Filtering Based Multiple-Model Control for Satellites in the Presence of Actuation Sign Errors 33

Filtering Based Multiple-Model Control for Satellites in the...

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第三十三届中国控制会议

作者： MA Yajie JIANG Bin TAO Gang CHENG Yuehua College of Automation Engineering Nanjing University of Aeronautics and Astronautics Department of Electrical and Computer Engineering University of Virginia Charlottesville VA 22904-4743 USA College of Astronautics Nanjing University of Aeronautics and Astronautics

ISBN: (纸本)9781479947249

This paper presents a new filtering based multiple-model control scheme for satellite attitude tracking control in the presence of sign errors in actuator response. As a result of a software or hardware fault, such actuation sign errors which are uncertain in occurring time instants and patterns may lead to the loss of satellites. The control design employs two steps: first,a bank of control laws are developed, each of which can ensure the system stability and asymptotic attitude tracking properties when the system operates under the corresponding actuation sign pattern;then a control switching mechanism is set up to find out the most appreciate control law as the applied control signal with a minimal performance cost index function. The used performance cost functions are calculated from the estimation errors generated by using a stable filter. Simulation results for a satellite with four reaction wheels are presented to demonstrate the effectiveness of the proposed multiple-model control scheme.

关键词： Attitude control,Multiple-model,Actuation sign error,Filtering.

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Unobtrusive Sensing Incremental Social Contexts Using Fuzzy Class Incremental Learning

Unobtrusive Sensing Incremental Social Contexts Using Fuzzy ...

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IEEE International Conference on Data Mining (ICDM)

作者： Zhenyu Chen Yiqiang Chen Xingyu Gao Shuangquan Wang Lisha Hu Chenggang Clarence Yan Nicholas D. Lane Chunyan Miao China Electric Power Research Institute Beijing China Department of Automation Tsinghua University Beijing China Beijing Key Laboratory of Mobile Computing and Pervasive Device Chinese Academy of Sciences Beijing China Bell Labs School of Computer Engineering Nanyang Technological University Singapore

ISBN: (纸本)9781467395052

By utilizing captured characteristics of surrounding contexts through widely used Bluetooth sensor, user-centric social contexts can be effectively sensed and discovered by dynamic Bluetooth information. At present, state-of-the-art approaches for building classifiers can basically recognize limited classes trained in the learning phase; however, due to the complex diversity of social contextual behavior, the built classifier seldom deals with newly appeared contexts, which results in degrading the recognition performance greatly. To address this problem, we propose, an OSELM (online sequential extreme learning machine) based class incremental learning method for continuous and unobtrusive sensing new classes of social contexts from dynamic Bluetooth data alone. We integrate fuzzy clustering technique and OSELM to discover and recognize social contextual behaviors by real-world Bluetooth sensor data. Experimental results show that our method can automatically cope with incremental classes of social contexts that appear unpredictably in the real-world. Further, our proposed method have the effective recognition capability for both original known classes and newly appeared unknown classes, respectively.

关键词： Context Bluetooth Mobile handsets Feature extraction Learning systems Data mining Sensors

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Randomized incremental least squares for distributed estimation over sensor networks 19

Randomized incremental least squares for distributed estimat...

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19th IFAC World Congress on International Federation of Automatic Control, IFAC 2014

作者： You, Keyou Song, Shiji Qiu, Li Department of Automation Tsinghua University Beijing100084 China Department of Electronic and Computer Engineering Hong Kong University of Science and Technology Hong Kong Hong Kong

ISBN: (纸本)9783902823625

This paper proposes a randomized incremental algorithm to distributedly compute the least square (LS) estimate of linear systems over sensor networks. By integrating its measurement information, a sensor is randomly activated at every time to incrementally update a diffusion vector, which is also used to recursively estimate the unknown parameters of the system via a temporal average algorithm. Then, the updated diffusion vector is passed to the next activated sensor. The activating process is modeled as an identically and independently distributed process. It is shown that the estimate in each sensor asymptotically converges both in mean and almost surely to the standard LS estimate of the system parameters, which is based on all the sensor information. Simulation is finally included to validate the theoretical results. © IFAC.

关键词： Sensor networks

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Editorial tnnls special issues and editorial board changes

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IEEE Transactions on Neural Networks and Learning Systems 2014年第1期25卷 1-8页

作者： Liu, Derong State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing 100190 China Department of Electrical and Computer Engineering University of Illinois at Chicago Chicago IL 60607 United States

Presents a listing of changes to the Editorial Board for this publication.

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A novel local search approximation algorithm for relay node placement in Wireless Sensor Networks

A novel local search approximation algorithm for relay node ...

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IEEE Conference on Wireless Communications and Networking

作者： Chaofan Ma Wei Liang Meng Zheng Hamid Sharif Shenyang Institute of Automation Chinese Academy of Sciences Shenyang China University of Chinese Academy of Sciences Beijing China Key Laboratory of Networked Control Systems Chinese Academy of Sciences Shenyang China Department of Computer & Electronics Engineering University of Nebraska-Lincoln Omaha NE USA

ISBN: (纸本)9781479984077

In two-tiered Wireless Sensor Networks (WSNs) relay node placement considering resource constraints and high overhead of the relay nodes plays a key role in extending the network lifetime. Therefore, approaches that support fewer relay nodes are desired to cover the WSNs. In this paper, we formulate the relay node placement problem as a Geometric Disc Covering (GDC) problem, and propose a novel local search approximation algorithm (LSAA) to solve the GDC problem. In the proposed LSAA, the sensor nodes are allocated into independent groups and then a Set Cover (SC) for each group is performed. The set of the SC for each group constitutes a SC of the GDC problem. LSAA is extensively investigated and analyzed by rigorous proof and the simulation results presented in this paper clearly demonstrate that the proposed LSAA outperform the approaches reported in literature in the reduction in deployed relay nodes.

关键词： Relays Approximation methods Approximation algorithms Wireless sensor networks Bridges Time complexity Conferences

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