检索结果-内蒙古大学图书馆

IEEE International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA)

作者： Yang Xu Karl-Erik Årzén Anton Cervin Enrico Bini Bogdan Tanasa Department of Automatic Control Lund University Sweden Scuola Superiore Sant'Anna Real-Time Systems Laboratory Italy Department of Computer and Information Science Linköping University Sweden

We consider a real-time system of multiple tasks, each task having a plant to control. The overall quadratic control cost is to be optimized. We exploit the periodicity of the task response time, which corresponds to a periodic delay pattern in the feedback control loop. Perturbed periods are used as a tool to find a finite hyper period. We present an analytical procedure to design a periodic linear-quadratic-Gaussian (LQG) controller for tasks with fixed execution times as well as a numerical solution to the periodic -- stochastic LQG problem for tasks with variable execution times. The controllers are evaluated using simulations in real-time scheduling and control co-design examples.

关键词： Delays Real-time systems control design Time factors Mathematical model Numerical models Cost function

来源：评论

学校读者我要写书评

暂无评论

State Estimation for a Class of Nonlinear Discrete-Time Complex Networks Subject to False Data Injection Attacks

State Estimation for a Class of Nonlinear Discrete-Time Comp...

引用

第三十四届中国控制会议

作者： Lei Zou Zidong Wang Hongli Dong Derui Ding Research Institute of Intelligent Control and Systems Harbin Institute of Technology Department of Computer Science Brunel University London College of Electrical and Information Engineering Northeast Petroleum University Department of Control Science and Engineering University of Shanghai for Science and Technology

ISBN: (纸本)9781467374439

This paper is concerned with the state estimation problem for a class of nonlinear discrete-time complex networks subject to false data injection attacks. By utilizing Bernoulli random binary distributed white sequences, the false data injection attack model is established to describe the characteristics of false data injection attacks applying to the complex networks under consideration. An estimator is designed to guarantee the ultimate boundedness of the estimation error in mean square. By employing stochastic analysis approach, suf cient conditions are derived for the existence of the desired estimators whose gains are parameterized by minimizing an upper bound of the output variance of the estimation errors. Finally, a numerical example is given to illustrate the effectiveness of the results.

关键词： State estimation,complex networks,false data injection attacks,ultimate boundedness

来源：评论

学校读者我要写书评

暂无评论

A Vision of Zero Entry Production Areas in Mines ∗

引用

IFAC-PapersOnLine 2015年第17期48卷 66-68页

作者： G. Nikolakopoulos T. Gustafsson P.E. Martinsson U. Andersson Control Engineering Group Department of Computer Science Electrical and Space Engineering Luleå Sweden ProcessIT Innovations Luleå Sweden Mine Tek HB Kiruna Sweden

This industrial article aims in presenting a short roadmap on the identified activities and technologies needed towards the vision of zero entry production areas in Mines. This work has been performed in close cooperation with large mining companies in Europe as part of the Smart Mine of the Future Research, Development and Innovation Program and will present the most important areas that it is expected the robotic technology to have an impact on.

关键词： Mining Robotics Mine Automation Zero Entry Production Areas

来源：评论

学校读者我要写书评

暂无评论

Distributed Algorithm for Economic Power Dispatch Including Transmission Losses

Distributed Algorithm for Economic Power Dispatch Including ...

引用

European control Conference

作者： Hao Xing Yuting Mou Minyue Fu Zhiyun Lin State Key Laboratory of Industrial Control Technology and the Department of Control Science and Engineering Zhejiang University School of Electrical Engineering and Computer Science University of Newcastle State Key Laboratory of Industrial Control Technology and the College of Electrical Engineering Zhejiang University

ISBN: (纸本)9781467371605

The economic dispatch problem (EDP) is of vital importance in the operation and control of power systems. In this paper, we consider the extended EDP that takes into account transmission losses and propose a distributed algorithm based on the average consensus algorithm and the bisection method. We assume that the total transmission losses can be represented by the B matrix loss formula, and the communication network between generators (nodes) is a connected undirected graph. A leader node is used to broadcast the total demand information by communicating with merely a small part of the nodes. Our algorithm is distributed in the sense that the nodes conduct local computations and communicate with their neighbors. Simulation results are given to show the performance of our algorithm.

关键词： distributed algorithms Power dispatch Propagation losses Power system control Ganglia networks(communications) COMMUNICATING Electronic Data Processing

来源：评论

学校读者我要写书评

暂无评论

Virtual commissioning for the control of the continuous industrial processes - case study

Virtual commissioning for the control of the continuous indu...

引用

International Conference on Methods and Models in Automation and Robotics

作者： Michal Fratczak Pawel Nowak Tomasz Klopot Jacek Czeczot Szymon Bysko Bartosz Opilski Silesian University of Technology Faculty of Automatic Control Electronics and Computer Science Institute of Automatic Control Gliwice Poland Department of Research and Development PROPOINT SP. Z O.O. SP. K. ul. Szobiszowicka 1 Gliwice Poland

ISBN: (纸本)9781479987023

This paper concentrates on the possibilities of the application of the virtual commissioning procedure for the design and verification of the control systems for the continuous industrial processes. After short review and defining the motivation and recognizing the bottlenecks, the case study is presented. It is based on the laboratory pneumatic setup representing the nonlinear continuous process of the higher relative degree. The stages of its modeling are presented and the potential possibilities of the application of the virtual commissioning for its control are discussed, based on the practical results.

关键词： virtual commissioning industrial control systems continuous industrial processes manufacturing systems

来源：评论

学校读者我要写书评

暂无评论

Correct-by-design output feedback of LTI systems

Correct-by-design output feedback of LTI systems

引用

IEEE Annual Conference on Decision and control

作者： S. Haesaert A. Abate P.M.J. Van den Hof Control Systems group in the Department of Electrical Engineering Eindhoven University of Technology The Netherlands Department of Computer Science University of Oxford UK

ISBN: (纸本)9781479978878

Current state-of-the-art correct-by-design controllers are designed for full-state measurable systems. This work extends the applicability of correct-by-design controllers to partially observable linear, time-invariant (LTI) models. Towards the certification of the synthesised controllers, approximate simulation relations are leveraged to attain a quantification for the accuracy of introduced approximations. Additionally, the robustness of the approach allows the extension to models with the presence of probabilistic disturbances on state transitions and on output measurements. In a case study from smart buildings we evaluate the new output-based correct-by-design controller on a physical system with limited sensor information.

关键词： LTI controllers Output feedback certification current status State Change

来源：评论

学校读者我要写书评

暂无评论

Identification of flexible wing aircraft models using hyperbolic metrics

Identification of flexible wing aircraft models using hyperb...

引用

Mediterranean Conference on control and Automation (MED)

作者： Alexandros Soumelidis Zoltán Szabó Peter Seiler Abhineet Gupta József Bokor Systems and Control Labo-ratory Institute for Computer Science and Control of the Hungarian Academy of Sciences Budapest Hungary Department of Aerospace Engineering and Mechanics University of Minnesota Minneapolis MN USA Hungarian Academy of Sciences Institute for Computer Science and Control Hungary

ISBN: (纸本)9781479999378

This paper proposes a novel discrete time identification method for flexible wing aircraft models from simulated data. The special properties of the dynamics arise from the fact that all the poles are located very close to the unit circle and their location changes with the flight velocity. Using identification criteria based on Euclidean metrics suffers from the problem of obtaining instability in the search and also on the possible high number of poles. The paper offers an alternative approach and associated identification method to obtain the poles directly using Laguerre-representation of the impulse responses and hyperbolic metrics for identification criteria. The method utilises the hyperbolic geometrical properties of the descriptions of discrete-time signals and systems on the unit disc, and is strictly connected to the representations in rational orthogonal bases. Beyond the conceptual clarity, examples also confirm that it forms an adequate basis for estimating poles of systems as a significant part of an identification process.

关键词： Atmospheric modeling Aircraft Measurement Convergence Aerodynamics Aircraft manufacture Automation

来源：评论

学校读者我要写书评

暂无评论

On the Perceived Quality Evaluation of Opportunistic Mobile P2P Scalable Video Streaming

On the Perceived Quality Evaluation of Opportunistic Mobile ...

引用

International Wireless Communications and Mobile Computing Conference

作者： Constandinos X. Mavromoustakis George Mastorakis Evangelos Pallis Charalambos Mysirlidis Tasos Dagiuklas Ilias Politis Ciprian Dobre Katerina Papanikolaou Computer Science Department University of Nicosia Department of Informatics Engineering Technological Educational Institute of Crete School of Science and Technology Hellenic Open University Faculty of Autonomic Control and Computers University Politehnica of Bucharest Department of Computer Science and Engineering European University Cyprus

ISBN: (纸本)9781479953455

This paper studies the evaluation of the video streaming over Mobile Peer-to-Peer (MP2P) networks using Scalable Video Coding. The proposed research framework exploits the MP2P diversity characteristics where each node acts as a Mobile Peer for every neighboring node in a relay-based communicating path. Mobile Peers use a common look-up table to request video streaming resources in order to estimate the video packets transfer duration in the end-to-end path. The collaborative streaming is achieved through the data packets replication policy, which uses a bounded upper time limitation for the video packets of each layer (Use of Scalable Video). Each node/device utilizes a specified amount of capacity for both channel and storage purposes. Different scenarios have been introduced in this paper towards evaluating the video streaming policy in the MP2P system, using a real-time probabilistic Fractional Brownian Motion (FBM) and a Random Waypoint (RWP) Mobility model. In both models, nodes move according to certain probabilities, location and time. Intermittent connectivity occurs while nodes claim video streams, whereas promiscuous caching policy enables -where possible-recoverability of lost packets offering priority to packets from the base layer. The simulation results show that FBM provides better objective and subjective quality results for two video sequences resolution, in the MP2P network configuration.

关键词： Mobile Peer-to-Peer Video Streaming Scalable Video Streaming Quality evaluation of video streaming

来源：评论

学校读者我要写书评

暂无评论

Optimizing matrix mapping with data dependent kernel for image classification

引用

Journal of Information Hiding and Multimedia Signal Processing 2014年第1期5卷 72-79页

作者： Zhang, De-Long Qiao, Jiaqing Li, Jun-Bao Qiao, Li-Yan Chu, Shu-Chuan Roddick, John F. Department of Automatic Test and Control Harbin Institute of Technology China School of Computer Science Engineering and Mathematics Flinders University GPO Box 2100 Adelaide SA 5001 Australia

Kernel based nonlinear feature extraction is feasible to extract the feature of image for *** current kernel-based method endures two problems: 1) kernel-based method is to use the data vector through transforming the image matrix into vector, which will cause the store and computing burden;2) the parameter of kernel function has the heavy influences on kernel based learning method. In order to solve the two problems, we present the method of optimizing matrix mapping with data dependent kernel for feature extraction of the image for classification. The method implements the algorithm without transforming the matrix to vector, and it adaptively optimizes the parameter of kernel for nonlinear mapping. The comprehensive experiments are implemented evaluate the performance of the algorithms. © 2014.

关键词： Matrix algebra

来源：评论

学校读者我要写书评

暂无评论

Feedback Stabilization of MIMO Systems in the Presence of Stochastic Network Uncertainties and Delays

Feedback Stabilization of MIMO Systems in the Presence of St...

引用

第三十四届中国控制会议

作者： Tian Qi Jie Chen Weizhou Su Minyue Fu School of Automation Science and Engineering South China University of Technology Department of Electronic Engineering City University of Hong Kong School of Electrical and Computer Engineering University of Newcastle State Key Laboratory of Industrial Control Technology and Department of Control Science and Engineering Zhejiang University

ISBN: (纸本)9781467374439

The purpose of this paper is to study stabilization problem of linear time-invariant systems subject to stochastic multiplicative uncertainties and time delays. We consider a structured multiplicative perturbation which consists of static, zero-mean stochastic processes and we assess the stability of system based on mean-square criteria. The mean-square stabilization problem for multi-input multi-output systems generally requires solving an optimization problem involving the spectral radius of a certain closed loop transfer function matrix. This problem in general is non-convex and by and large unresolved, only approximate solutions are available based on numerical algorithms resembling to the D-K iteration for μ-synthesis. Our main contributions include the fundamental conditions, both necessary and sufficient, which insure that the multi-input multi-output minimum phase systems can be stabilized by output feedback in the mean-square sense. We provide a complete, computationally efficient solution in the form of a generalized eigenvalue problem readily solvable by means of linear matrix inequality optimization. For conceptual insights, limiting cases are analyzed in depth to characterize and quantify explicitly how the directions of unstable poles may affect the mean-square stabilizability of multi-input multi-output systems.

关键词： Mean square stability and stabilization,constant time-delay,stochastic multiplicative uncertainty

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：