检索结果-内蒙古大学图书馆

IEEE Communications Society Conference on Sensor and Ad Hoc Communications and Networks (SECON)

作者： Yuanchao Shu Peng Cheng Yu Gu Jiming Chen Tian He State Key Laboratory of Industrial Control Technology Zhejiang University China Singapore University of Technology and Design Singapore SG Dept. of Computer Science and Engineering University of Minnesota USA

Integrated with low-power micro-controllers and sensors, RFID-based wireless rechargeable sensor node is a very promising platform for applications such as inventory management, supply chain monitoring etc. Among other major research challenges, one of the most essential problems in such wireless rechargeable sensor networks is how to minimize the communication delay among RFID readers and RFID-based rechargeable nodes. While the existing works have mostly focused on the collision avoidance among RFID-based nodes, in this work we study an orthogonal approach which focuses on how to optimally plan the movement of the reader so as to minimize the communication delay in the network. To solve this problem, we introduce both an optimal solution for the linear reader movement pattern and an approximation solution for the generic two-dimensional reader move pattern with a provable approximation ratio. In addition, we also provide a solution for guaranteeing the quality of communication while minimizing the communication delay. We verify our observations through testbed experiments and extensively evaluate our design by both emulations and large-scale simulations. The results show our design can effectively reduce communication delay in wireless rechargeable sensor networks when compared with baseline solutions.

关键词： Delays Wireless sensor networks Wireless communication Radiofrequency identification Approximation methods Minimization

来源：评论

学校读者我要写书评

暂无评论

Identification of inactive constraints for SCED model considering uncertain power injection

引用

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical engineering 2014年第34期34卷 6050-6057页

作者： Ding, Tao Bo, Rui Guo, Qinglai Sun, Hongbin Huang, Can Li, Fangxing State Key Lab of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Haidian District Beijing100084 China Midwest ISO St. Paul MN55108 United States Department of Electrical Engineering and Computer Science The University of Tennessee Knoxville TN37996 United States

With the constant expansion of power grid, a large number of security constraints have put tremendous challenges to the online economic dispatch. An efficient tool to eliminate the inactive constraints becomes necessary for security constraints economic dispatch (SCED) in large power systems. In this paper, considering the uncertainty of renewable energy integration, a fast and effective method to identify the inactive security constraints was proposed. Firstly, the definition of uncertain inactive security constraints and a necessary and sufficient condition to identify those were presented respectively. Considering the time-consuming identification, we relaxed the feasible region of original SCED model and utilized greedy algorithm to quickly eliminate part of inactive constraints. Then another necessary and sufficient condition was proposed and verified, where the remaining inactive constraints could be identified. Through the simulation of 24-time periods 9-bus system and 96-time periods IEEE 118-bus system, the speed and effectiveness of proposed method were verified. Moreover, the results can help dispatch operators to locate the transmission lines with the highest congestion risk. © 2014 Chin. Soc. for Elec. Eng.

关键词： Scheduling

来源：评论

学校读者我要写书评

暂无评论

Distributed MPC for Frequency Regulation in Multi-Terminal HVDC Grids

引用

IFAC Proceedings Volumes 2014年第3期47卷 11141-11146页

作者： Paul Mc Namara Ronan Meere Terence O'Donnell Seán McLoone Dynamics and Control Research Group Dept. Electronic Engineering Callan Building NUI Maynooth Maynooth Kildare Ireland Electricity Research Centre Engineering & Materials Science Centre University College Dublin Belfield Dublin 4 Ireland Energy Power and Intelligent Control Research Cluster School of Electronics Electrical Engineering and Computer Science Queen's University Belfast Belfast Northern Ireland

High Voltage Direct Current (HVDC) lines allow large quantities of power to be transferred between two points in an electrical power system. A Multi-Terminal HVDC (MTDC) grid consists of a meshed network of HVDC lines, and this allows energy reserves to be shared between a number of AC areas in an efficient manner. Secondary Frequency control (SFC) algorithms return the frequencies in areas connected by AC or DC lines to their original setpoints after Primary Frequency controllers have been called following a contingency. Where multiple TSOs are responsible for different parts of a MTDC grid it may not be possible to implement SFC from a centralised location. Thus, in this paper a simple gain based distributed Model Predictive control strategy is proposed for Secondary Frequency control of MTDC grids which allows TSOs to cooperatively perform SFC without the need for centralised coordination.

关键词： Multi-terminal HVDC Distributed MPC Secondary Frequency control

来源：评论

学校读者我要写书评

暂无评论

ANFIS based Jacobian for a parallel manipulator mobility assistive device

ANFIS based Jacobian for a parallel manipulator mobility ass...

引用

UKACC International Conference on control (control)

作者： Ahmed Asker Omar Salah Ahmed M. R. Fath El-Bab Ahmed A. Ramadan Samy M. F. Assal Salvatore Sessa Ahmed Abo-Ismail School of Innovative Design Engineering Egypt-Japan University for Science and Technology Alexandria Egypt Mechanical Engineering Dept Assiut University Assiut Egypt Computer and Automatic Control Dept Tanta University Tanta Egypt Dept. of Production Engineering and Mechanical Design Tanta University Tanta Egypt

Nowadays parallel manipulators are used widely in bioengineering applications; this leads to many exciting expectations as well as challenges. The kinematic analysis of parallel manipulators with their differential kinematics yielding the Jacobian in a closed form is not a trivial task. In this paper a parallel manipulator based mobility assistive device called EJADII is analyzed to determine forward kinematics, inverse kinematics and closed-form Jacobian. An Adaptive Neuro-Fuzzy Inference System (ANFIS) is trained to estimate the Jacobian. This system would be useful when determination of the Jacobian in a closed-form is difficult to determine. The human motion during sit to stand captured by VICON experiment is used with two assisting scenarios to train and verify this system. computer simulations show relatively good results of the proposed system.

关键词： Jacobian matrices Kinematics Actuators Joints Manipulators Equations Mathematical model

来源：评论

学校读者我要写书评

暂无评论

On-line qualitative model-based diagnosis of technological systems using colored petri nets 28

On-line qualitative model-based diagnosis of technological s...

引用

28th European Simulation and Modelling Conference, ESM 2014

作者： Leitold, Adrien Gerzson, Miklós Pózna, Anna I. Hangos, Katalin M. Department of Mathematics University of Pannonia P.O.B. 158 VeszprémH-8201 Hungary Dept. of Electrical Engineering and Information System University of Pannonia P.O.B. 158 VeszprémH-8201 Hungary Process Control Research Group Computer and Automation Research Institute P.O.B. 63 BudapestH-1518 Hungary

ISBN: (纸本)9789077381861

A novel on-line diagnosis method is proposed in this paper that uses a qualitative dynamic model of the system and its colored Petri nets model. The model contains both the normal and the possible faulty operational modes of the system. The deviation between the normal and faulty modes is characterized based on P-HAZID tables. The actual system state can be searched on the occurrence graph constructed in advance. Starting from this node the possible consequences and root causes can be determined on-line with traversing on the graph. The proposed method is illustrated on simple case studies.

关键词： Petri nets

来源：评论

学校读者我要写书评

暂无评论

Faults and fault propagation modeling in manufacturing systems based on colored petri nets 28

Faults and fault propagation modeling in manufacturing syste...

引用

28th European Simulation and Modelling Conference, ESM 2014

作者： Gerzson, Miklós Leitold, Adrien Hangos, Katalin M. Dept. of Electrical Engineering and Information System University of Pannonia P.O.B. 158 VeszprémH-8201 Hungary Department of Mathematics University of Pannonia P.O.B. 158 VeszprémH-8201 Hungary Process Control Research Group Computer and Automation Research Institute P.O.B. 63 BudapestH-1518 Hungary

ISBN: (纸本)9789077381861

A novel fault integration method is proposed in this paper for manufacturing system models given in the form of timed colored Petri nets. The faults are assumed to have a stochastic nature and are represented in the form of transitions firing in stochastic way with known fault probabilities in the system model. A novel fault effect propagation method was also developed, that can be used to compute the probabilities of the possible faulty and non-faulty intermediate and final states of the system using the probabilities of faults and the occurrence graph. The faultless and fault containing models were implemented in CPNTools both for non-timed and timed cases. A software module was also developed for the proposed probabilistic fault propagation analysis. The proposed methods and tools were demonstrated using a simple case study.

关键词： Manufacture

来源：评论

学校读者我要写书评

暂无评论

A weight-incorporated similarity-based clustering ensemble method

A weight-incorporated similarity-based clustering ensemble m...

引用

IEEE International Conference on Networking, Sensing and control

作者： ShiYao Liu Qi Kang Jing An MengChu Zhou Dept. of Control Science and Eng. Tongji University Shanghai China School of Electrical & Electronic Engineering Shanghai Institute of Technology Shanghai China Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA

Clustering analysis is an important tool of data mining. The study on efficient clustering has great significance, especially in improving a clustering algorithm's adaptability and usefulness. Clustering ensemble (CE) integrates several clustering algorithms such that the clustering results can be effectively improved. This work investigates similarity-based methods and proposes a new method called weight- incorporated similarity-based clustering ensemble (WSCE). Six classic data sets are used to test single clustering algorithms, similarity-based one, and the proposed one via simulation. The results prove the validity and performance advantage of the proposed method.

关键词： Iris Vehicles Image segmentation Clustering algorithms Algorithm design and analysis computers Lead

来源：评论

学校读者我要写书评

暂无评论

Classification of language interactions

Classification of language interactions

引用

2013 ACM / IEEE International Symposium on Empirical Software engineering and Measurement, ESEM 2013

作者： Tomassetti, Federico Torchiano, Marco Vetro, Antonio Dept. of Control and Computer Engineering Politecnico di Torino Torino Italy

ISBN: (纸本)9781479911448

Context: the presence of several languages interacting each other within the same project is an almost universal feature in software development. Earlier work shows that this interaction might be source of problems. Objective: we aim at identifying and characterizing the cross-language interactions at semantic level. Method: we took the commits of an open source project and analyzed the cross-language pairs of files occurring in the same commit to identify possible semantic interactions. We both defined a taxonomy and applied it. Result: we identified 6 categories of semantic interactions. The most common category is the one based on shared ids, the next is when an artifact provides a description of another artifact. Conclusion: the deeper knowledge of cross-language interactions represents the basis for implementing a tool supporting the management of this kind of interactions and the detection of related problems at compile time. © 2013 IEEE.

关键词： Semantics

来源：评论

学校读者我要写书评

暂无评论

Active Fault Isolation in MIMO Systems

引用

IFAC Proceedings Volumes 2014年第3期47卷 8012-8017页

作者： Henrik Niemann Niels Kjølstad Poulsen Department of Electrical Engineering Automation and Control Technical University of Denmark Building 326 DK-2800 Kgs. Lyngby Denmark Dept. of Applied Mathematics and Computer Science Section for Dynamical Systems Technical University of Denmark DK-2800 Kgs. Lyngby Denmark

Active fault isolation of parametric faults in closed-loop MIMO systems are considered in this paper. The fault isolation consists of two steps. The first step is group-wise fault isolation. Here, a group of faults is isolated from other possible faults in the system. The group-wise fault isolation is based directly on the input/output signals applied for the fault detection. It is guaranteed that the fault group includes the fault that had occurred in the system. The second step is individual fault isolation in the fault group. Both types of isolation are obtained by applying dedicated auxiliary inputs and the associated residual outputs.

关键词： Active fault isolation MIMO systems YJBK parameterization

来源：评论

学校读者我要写书评

暂无评论

Percentile-based contention window design for random access MIMO interference networks

Percentile-based contention window design for random access ...

引用

IEEE International Conference on Communications Workshops, ICC

作者： Zhenzhe Sun Chengnian Long Mary Ann Weitnauer Shanghai Jiao Tong University Shanghai CN Dept. of Automation Key Lab. of System Control and Information Processing Ministry of Education School of Electronic and Computer Engineering Georgia Institute of Technology Atlanta Georgia

This paper describes a new method for how interfering MIMO links might transmit more effectively in a random access network. We assume perfect transmitter-side channel state information, zero-forcing pre-coding to guarantee no interference on links that have already won access, and zero-forcing receiver processing at the still-contending links to suppress interference from the links that have already won. We define an effectiveness metric, the Instantaneous Equivalent SNR Percentile (IESP), in which the Equivalent SNR is the SNR of a single-input-single-output (SISO) link that would have the same capacity of a MIMO link after its interference constraints have been met and the IESP is the percentile of the Equivalent SNR, assuming independent Rayleigh fading. We propose that fairness among heterogeneous contending links be realized by giving the shorter contention window to the link with the higher IESP based on its own distribution, enabling links with few antennas to compete with links that have many antennas. Through simulation of the sum capacity of the winning set of links, the proposed contention window design is shown to provide a higher sum capacity than contention based on equal-sized windows.

关键词： Signal to noise ratio Receivers MIMO Interference Vectors Transmitters Frequency modulation

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：