检索结果-内蒙古大学图书馆

IEEE Power and Energy Society General Meeting

作者： Jing Ma Tong Wang Zengping Wang Jie Wu James S. Thorp School of Electrical and Electronic Engineering North China Electric Power University and also with the Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control under Ministry of Education North China Electric Power University State Nuclear Electric Power Planning Design and Research Institute Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University

ISBN: (纸本)9781457710001

This paper develops a systematic procedure of designing global power system stabilizers (GPSSs) based on collocated control to enhance the damping during interarea oscillations. The availability of remote signals from phasor measurement units (PMUs) enables the wide-area control in large scale systems. The closed loop eigenvalues are excluded from a region of the complex plane by the collocated control algorithm guaranteeing that low frequency modes must be damped. The optimum locations for GPSSs were selected using controllability. The damping performance of a 16-machine, 68-bus study system reinforced with GPSSs is examined in the frequency and time domains. The simulation results show that the control scheme is able to damp out interarea oscillations following possible disturbances.

关键词： PMUs Interarea oscillations Collocated control Global power system stabilizers Phasor measurement units absorption of shock dinitrophenyl-aminopropyl-methylamine Oscillations control technology Complex Plane Power system stability computer algorithms

来源：评论

学校读者我要写书评

暂无评论

Computing robot internal/external wrenches by means of inertial, tactile and F/T sensors: Theory and implementation on the iCub

Computing robot internal/external wrenches by means of inert...

引用

IEEE-RAS International Conference on Humanoid Robots

作者： S. Ivaldi M. Fumagalli M. Randazzo F. Nori G. Metta G. Sandini Institut des Systèmes Intelligents et de Robotique Université Pierre et Marie Curie Paris France Robotics Brain and Cognitive Sciences Department Istituto Italiano di Tecnologia Genova Italy Department of Control Engineering University of Twente Enschede Netherlands Department of Communication Computer and System Sciences University of Genoa Italy

Reliable access to dynamics is one of the central challenges in humanoid robotics. In this paper we consider the problem of computing both internal and external wrenches in open multiple branches kinematic chains, which are not equipped with joint-level torque sensors, but on the contrary are provided with inertial and tactile sensing, and a set of six- axes Force/Torque Sensors (FTS) distributed within the chain. The proposed method is grounded on the Enhanced Oriented Graph, a graph-representation of the kinematic chain, enriched with the information coming from the different sensors. Under suitable conditions, a maximum of N+1 external wrenches can be estimated from N six-axes FTS. The graph is built dynamically, and internal and external wrenches are consequently updated. Theoretical results have been implemented in a software library (iDyn) released with an open-source license (GPL) as part of the iCub software project. The proposed method has been applied to 32 of the 53 DOF of the iCub humanoid robot.

关键词： Kinematics Electrooculography Robot sensing systems Joints Torque

来源：评论

学校读者我要写书评

暂无评论

Voxel based treatment prediction using diffusion anisotropy indices and spatial information in Glioblastoma Multiform tumor

Voxel based treatment prediction using diffusion anisotropy ...

引用

Iranian Conference of Biomedical engineering (ICBME)

作者： Hadi Sabahi Hamid Soltanian-Zadeh Lisa Scarpace Tom Mikkelsen Control and Intelligent Processing Center of Excellence School of Electrical and Computer Engineering University of Tehran Tehran Iran Image Analysis Laboratory Radiology Department Henry Ford Hospital Detroit MI USA Hermelin Brain Tumor Research Center Neurosurgery Department Henry Ford Health System Detroit MI USA

In this paper, we propose a method to predict the outcome of Bevacizumab therapy on Glioblastoma Multiform (GBM) tumors. The method uses diffusion anisotropy indices (DAI) and spatial information to predict the treatment response of each tumor voxel. These DAIs are Fractional Anisotropy, Mean Diffusivity, Relative Anisotropy, and Volume Ratio, extracted from Diffusion Tensor Imaging (DTI) data before treatment. The spatial information is considered as the distance of each tumor voxel from the tumor center, extracted from pre-treatment post-contrast T1-weighted Magnetic Resonance Images (pc-T1-MRI). DAIs and spatial information of each tumor voxel are considered as feature vector. DTI and pc-T1-MRI are gathered before and after the treatment of seven GBM patients. First, DAIs of all brain voxels and the distance of each tumor voxel from the tumor center are calculated. Second, the method registers pre-treatment DAI maps and post-treatment pc-T1-MRI to pre-treatment pc-T1-MRI. Next, the tumor is segmented using thresholding technique from pc-T1-MRI. Then, Gd-enhanced voxels of the pre- and post-treatment pc-T1-MRI are compared to label the feature vectors. Three classifiers were evaluated, including Support Vector Machine, K-Nearest Neighbor, and Artificial Neural Network. Classification results show a preference for K-Nearest Neighbor based on well-established performance measures.

关键词： Tumors Anisotropic magnetoresistance Diffusion tensor imaging Support vector machines Feature extraction Artificial neural networks

来源：评论

学校读者我要写书评

暂无评论

Tutorial: control issues in haptic teleoperation

Tutorial: Control issues in haptic teleoperation

引用

World Haptics Conference

作者： Angelika Peer Cristian Secchi Katsunari Sato Cenk Cavusoglu Institute of Automatic Control Engineering (LSR) Technische Universität München Munchen Germany DISMI University of Modena and Reggio Emilia and INFM Reggio Emilia Italy Graduate School of System Design and Management Keio University Yokohama Kanagawa Japan Department of Electrical Engineering and Computer Sciences Case Western Reserve University Cleveland OH USA

Telerobotics is one of the most traditional fields of robotics and it played a crucial role in the history of robotics and of the mankind, especially in the areas of space and undersea exploration and of remote material handling. On the other hand, teleoperation is still a very active research area and many problems are still open. In particular, the design of the control strategy for coupling local and remote site is of paramount importance for implementing telepresence, namely the feeling of being directly interacting with the remote environment. The IEEE RAS Technical Committee on Telerobotics would like to propose a half-day tutorial for illustrating several successful control strategies for implementing high performance bilateral teleoperation systems.

关键词：

来源：评论

学校读者我要写书评

暂无评论

An application of fractional intelligent robust controller for electromechanical valve

An application of fractional intelligent robust controller f...

引用

World Congress on Information and Communication Technologies (WICT)

作者： Tribeni Prasad Banerjee Suman Saha Swagatam Das Ajith Abraham Department of Electronics and Telecommunication Engineering Jadavpur University Kolkata India Drives and Control System Laboratory CSIR-Central Mechanical Engineering Research Institute Durgapur West Bengal India IT For Innovations EU Center of excellence Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Czech Republic Scientific Network for Innovation and Research Excellence Machine Intelligence Research Laboratories-MIR Laboratories WA USA

The paper analyzed and model of a fault tolerant electromechanical controlled worm gear driven fuel shut off valve for aerospace application. The analysis is mainly on design a reduced order fractional controller. This is for controlling the velocity of worm gear so that the friction torque due to uneven rotational speed can be avoided. Because with the friction and stiction and backlash the valve system performance is reduced and more and more unstable this leads the system to failure. The proposed controller can provide robustness against the uncertain loading torque and system parameter.

关键词： Valves Gears Equations control systems Robustness Mathematical model Torque

来源：评论

学校读者我要写书评

暂无评论

Decision tree based fault detection and classification in distance relaying

Engineering Intelligent Systems

引用

engineering Intelligent systems 2011年第3期19卷 139-147页

作者： Samantaray, S.R. Kamwa, I. Joos, Geza School of Electrical Sciences Indian Institute of Technology Bhubaneswar Odisha India Hydro-Quebec/IREQ Power System Analysis Operation and Control Varennes QC J3X 1S1 Canada Department of Electrical and Computer Engineering McGiII University McConnell 6333480 University Street Montreal QC H3A 2A7 Canada

This paper presents a new approach for fault detection and classification in transmission line using Decision Tree (DT). The DT based fault detection algorithm uses 1/4th cycle data of fault currents from fault inception, to generate the optimal decision tree for fault detection. Similarly, the DT based classification algorithm takes half cycle data from fault inception of three phase currents along with zero sequence current, and constructs the optimal decision tree for classifying all 10 types of shunt faults in the transmission line fault process. The algorithm is tested on simulated fault data with wide variations in operating parameters of the power system network. The results indicate that the proposed method can reliably detect and classify faults in transmission line within the sub-cycle time-frame while keeping the computational burden sufficiently low to make a real-time implementation feasible. © 2011 CRL Publishing Ltd.

关键词： Decision trees

来源：评论

学校读者我要写书评

暂无评论

Corrections to “A High-Order Internal Model Based Iterative Learning control Scheme for Nonlinear systems With Time-Iteration-Varying Parameters” [Nov 10 2665-2670]

引用

IEEE Transactions on Automatic control 2011年第1期56卷 235-235页

作者： Chenkun Yin Jian-Xin Xu Zhongsheng Hou Advanced Control System Laboratory School of Electronics and Information Engineering Beijing Jiaotong University Beijing China Department of Electrical and Computer Engineering National University of Singapore Singapore

In the above titled paper (ibid., vol. 55, no. 11, pp. 2665-2670, Nov. 10), six errors were found. The corrections are presented here.

关键词： Adaptive control Autoregressive processes Iterative methods Learning systems Nonlinear control systems Time varying systems

来源：评论

学校读者我要写书评

暂无评论

Fuzzy C-means cluster segmentation algorithm based on hybridized particle swarm optimization

Fuzzy C-means cluster segmentation algorithm based on hybrid...

引用

International Conference on Bio-inspired Computing, Theories and Applications

作者： Li, Yan-Ling Shen, Yi College of Computer and Information Technology Xinyang Normal University Xinyang 464000 China Department of Control Science and Engineering Institute of System Engineering Huazhong University of Science and Technology Wuhan 430074 China

ISBN: (纸本)9781424464388

Fuzzy C-Means(FCM) algorithm is one of the most popular methods for image segmentation, but it is in essence a technology of searching local optimal solution. The algorithm's initial clustering centers are the stochastic selection which causes it to depend on the selection of the initial cluster centers excessively. It always converges at the local optimum and is sensitive to noise. In order to overcome those defects, the fuzzy C-means cluster segmentation algorithm based on hybridized particle swarm optimization is proposed in this paper. Firstly, the hybridized particle swarm algorithm is used to get the initial cluster centers. Then, the images are segmented using standard FCM algorithm. Experimental results show that the proposed algorithm used for image segmentation can segment images more effectively and can provide more robust segmentation results. © 2010 IEEE.

关键词： Image segmentation

来源：评论

学校读者我要写书评

暂无评论

Modern development of low cost RT industrial process control based on matlab-simulink and PAC

Modern development of low cost RT industrial process control...

引用

作者： Tutsch, Michal Konarik, Petr Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VSB - Teclmical University of Ostrava Ostrava Czech Republic Department of Control System and Instrumentation Faculty of Mechanical Engineering VSB - Teclmical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424473359

The paper presents modern advanced development methods of control systems that minimizes the cost of development of applications which are widely applicable in industrial control of whole range of processes. Unlike the classical way of design and testing control algorithms which are based on expensive RT measurement cards or dSpace, this solution is based on industrial controllers WinPLC/WinPAC. This enables so called rapid-prototyping of control algorithms directly from Matlab-Simulink into target platform. It was used muItiplatform control system REX as a bridge between Matlab and the target platform. The paper describes whole design of control algorithms and control schemes, simulation of prepared schemes, uploading control schemes into target platform of WinPLC. Also possibilities of remote data transfer and data storage are mentioned. The real measurement on hydraulic industrial system proved its limits that were also explained in this paper.

关键词： Simulink

来源：评论

学校读者我要写书评

暂无评论

Underlying system using dynamic clustering and structural similarity

Underlying system using dynamic clustering and structural si...

引用

2010 6th IEEE World Congress on Computational Intelligence, WCCI 2010

作者： Hernando Colina, M. Eliezer Castañeda, M. Wladimir Rodríguez, G. Carlos Parra, O. University of Pamplona Engineering Faculty Systems Engineering Department Pamplona Norte de Santander Colombia Automation and Control Department University of Andes System School Sede la Hechicera Estado Mérida Mérida Venezuela Department of Computer Engineering Faculty System School Sede la Hechicera Estado Mérida Mérida Venezuela

ISBN: (纸本)9781424469208

we propose a new perspective on the identification of linear dynamic system using structural similarity. The proposal consists in the meaningful exploration of each model, specifically behavior of the state variable. The decomposition of the behavior of a state variable in different modes of behavior of a system, each one has a different set of weights and shows different patterns of behavior. These weights are more significant than eigenvalue to develop a new technique for identifying linear system and invariants over time. We use two methods based on different areas of knowledge such as linear algebra and statistics. This paper is a conceptual proof that enriches the implementation and validity not only from point of view algorithmic likewise physic mathematical. © 2010 IEEE.

关键词： Artificial intelligence

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：