检索结果-内蒙古大学图书馆

19th International Workshop on Robotics in Alpe-Adria-Danube Region, RAAD 2010

作者： Tar, J.K. Rudas, I.J. Bitó, J.F. Kozlowski, K.R. Pozna, C. Institute of Intelligent Engineering Systems John von Neumann Faculty of Informatics Ó Buda University Bécsi út 96/B H-1034 Budapest Hungary Department of Control and Systems Engineering Computing Science and Management Poznań University of Technology Piotrowo 3a 60-965 Poznań Poland Design and Robotics Department University Transilvania of Brasov Bd. Eroilor 29 Brasov Romania

ISBN: (纸本)9781424468867

The "Model Reference Adaptive control (MRAC)" is a popular approach from the early nineties to our days. Its basic idea is the application of proper feedback that makes the behavior of the controlled system identical to that of the "reference model" that normally is simple enough to control. The idea has many particular variants with the common feature that they are designed by the use of Lyapunov's 2nd ("direct") method that normally applies a quadratic Lyapunov function constructed of the tracking error and further additional terms. Though this approach normally guarantees global asymptotic stability, its use can entail complicated tuning that may have disadvantages whenever very fast applications are needed. In this paper an alternative problem tackling, the application of "Robust Fixed Point Transformations (RFPT)" in the MRAC technique is recommended. This approach applies strongly saturated, multiplicative nonlinear terms causing a kind of "deformation" of the input of the available imprecise system model. Instead parameter tuning that is typical in the traditional MRAC it operates with a simple convergence guaranteed only within a local basin of attraction. This technique can well compensate the simultaneous consequences of modeling errors and external disturbances that normally can "fob" the more traditional, tuning based approaches. As a potential application paradigm the novel MRAC control of a "cart-beam-hamper" system is considered. The conclusions of the paper are illustrated by simulation results. © 2010 IEEE.

关键词： Model reference adaptive control

来源：评论

学校读者我要写书评

暂无评论

A Framework for Nonlinear Output Regulation for Time-varying Uncertain Systems

A Framework for Nonlinear Output Regulation for Time-varying...

引用

2010 49th IEEE Conference on Decision and control

作者： Xi Yang Jie Huang Applied Control and Computing Laboratory Department of Mechanical and Automation Engineering The Chinese University of Hong Kong Shatin N.T. Hong Kong

ISBN: (纸本)9781424477456

Recently, the global robust output regulation problem for nonlinear time-varying systems is considered in [14] under the assumption that the exosystem is exactly known. This paper further considers the case where the time-varying exosystem is unknown. Conditions are given under which the problem can be converted into an adaptive stabilization problem of an augmented time-varying nonlinear system. The problem is solved for a class of time-varying output feedback systems with a time-varying uncertain exosystem.

关键词： Nonlinear output regulation Time-varying systems Adaptive control

来源：评论

学校读者我要写书评

暂无评论

The Determination of Microbicidal Effects of Corona Discharge Using the Image Analysis

引用

IFAC Proceedings Volumes 2010年第24期43卷 227-231页

作者： H. Sousková L. Kommová V. Scholtz A. Korbářová J. Julák Department of Computing and Control Engineering Institute of Chemical Technology in Prague Czech Republic Department of Physics and Measurement Institute of Chemical Technology in Prague Czech Republic First Faculty of Medicine Charles University in Prague Czech Republic

This paper presents an experimental apparatus for the decontamination and sterilization of water suspension of microorganisms and demonstrates the application of image analysis for the evaluation of decontamination efficiency by automatic counting of colonies on surface of cultivating medium. It was shown that the presented procedure of image analysis is adequate for this problem. The error of the automated cfu counting procedure is less than 5% in the comparison with manual counting. From the microbiological point of view it was found, that total inhibition of all four bacterial species and one of yeast occurs after 3 and 6 minutes of exposition to the corona discharge. Total inhibition of mould spores occurs after 20 minutes for one of used species only but it does not occurs even after 30 minutes of exposition for next two species under study.

关键词： Corona discharges image analysis sterilization microorganisms biotechnology

来源：评论

学校读者我要写书评

暂无评论

Multi-Channel EEG Signal Segmentation and Feature Extraction

Multi-Channel EEG Signal Segmentation and Feature Extraction

引用

International Conference on Intelligence engineering Systems

作者： Ales Prochazka Martina Mudrova Oldfich Vysata Robert Hava Carmen Paz Suarez Araujo Institute of Chemical Technology in Prague Department of Computing and Control Engineering Neurocenter Caregroup Czech Republic Universidad de Las Palmas de G.C.

ISBN: (纸本)9781424476527

Signal analysis of multi-channel data form a specific area of general digital signal processing methods. The paper is devoted to application of these methods for electroencephalogram (EEG) signal processing including signal de-noising, evaluation of its principal components and segmentation based upon feature detection both by the discrete wavelet transform (DWT) and discrete Fourier transform (DFT). The self-organizing neural networks are then used for pattern vectors classification using a specific statistical criterion proposed to evaluate distances of individual feature vector values from corresponding cluster centers. Results achieved are compared for different data sets and selected mathematical methods to detect and to classify signal segments features. Proposed methods are accompanied by the appropriate graphical user interface (GUI) designed in the MATLAB environment.

关键词： Electroencephalography Feature extraction Discrete wavelet transforms Discrete Fourier transforms Graphical user interfaces Signal analysis Digital signal processing Signal processing Signal denoising Computer vision

来源：评论

学校读者我要写书评

暂无评论

Feature selection for semi-supervised multi-label learning with application to gene function analysis 10

Feature selection for semi-supervised multi-label learning w...

引用

Proceedings of the First ACM International Conference on Bioinformatics and Computational Biology

作者： Li, Guo-Zheng You, Mingyu Ge, Lei Yang, Jack Y. Yang, Mary Qu MOE Key Laboratory of Embedded System and Service Computing Tongji University Shanghai 201804 China Department of Control Science and Engineering Tongji University Shanghai 201804 China School of Computer Science and Engineering Shanghai University Shanghai 200072 China Purdue Univ. ECE West Lafayette IN 47907 United States Indiana Univ. Bioinformatics Center Indianapolis IN 46202 United States

ISBN: (纸本)9781450304382

This paper investigates gene function annotation of Yeast by using semi-supervised multi-label learning. Multi-label learning has been a hot topic in the bioinformatics field, but there are many samples unlabeled. Semi-supervised learning may be employed to utilize the unlabeled data. This paper proposes a novel semi-supervised multi-label learning algorithm COMN by combining Co-Training with ML-kNN to utilize the unlabeled yeast gene data to improve modeling accuracy of function annotation. Furthermore, an embedded feature selection algorithm PRECOMN is proposed to perform feature selection for COMN to remove the irrelevant and redundant features. Experimental results on one benchmark data set of Yeast show COMN and PRECOMN perform better than the original multi-label learning algorithm ML-kNN. Furthermore PRECOMN improves generalization performance of COMN. Copyright © 2010 ACM.

关键词： Feature Selection

来源：评论

学校读者我要写书评

暂无评论

Solving NP-complete problems by spiking neural P systems with budding rules

Solving NP-complete problems by spiking neural P systems wit...

引用

10th International Workshop on Membrane computing, WMC 2009

作者： Ishdorj, Tseren-Onolt Leporati, Alberto Pan, Linqiang Wang, Jun Computational Biomodelling Laboratory Åbo Akademi University Department of Information Technologies 20520 Turku Finland Università degli Studi di Milano - Bicocca Dipartimento di Informatica Sistemistica e Comunicazione Viale Sarca 336/14 20126 Milano Italy Key Laboratory of Image Processing and Intelligent Control Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 Hubei China Research Group on Natural Computing Department of CS and AI University of Sevilla Avda Reina Mercedes s/n 41012 Sevilla Spain

ISBN: (纸本)3642114660

Inspired by the growth of dendritic trees in biological neurons, we introduce spiking neural P systems with budding rules. By applying these rules in a maximally parallel way, a spiking neural P system can exponentially increase the size of its synapse graph in a polynomial number of computation steps. Such a possibility can be exploited to efficiently solve computationally difficult problems in deterministic polynomial time, as it is shown in this paper for the NP-complete decision problem sat. © 2010 Springer-Verlag.

关键词： Computational complexity

来源：评论

学校读者我要写书评

暂无评论

Continuous Noninvasive Blood Pressure Measurement by Near Infra Red CCD Camera and Pulse Transmit Time Systems

Continuous Noninvasive Blood Pressure Measurement by Near In...

引用

International Conference on Computer engineering and Applications (ICCEA)

作者： Petr Zurek Ondrej Krejcar Marek Penhaker Martin Cerny Robert Frischer Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Ostrava Czech Republic Department of Automation and Computing in Metallurgy Faculty of Metallurgy and Materials Engineering Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424460793;9780769539829

The need of continuous blood pressure measurement is usable in wide spectrum of applications from physicians practice to home care applications. Many types of blood pressure measurement devices can be bought in electronics shops. All such devices are contact measurement devices which need to be in contact of human body (hand or foot mainly). Secondary they allow only one measurement per several minutes interval (typically ones in 10 minutes). Our goal is to develop a small device for noninvasive continuous measurement of blood pressure. This device must be a small battery powered embedded system which measure a blood pressure during a long time period and send this information remotely to operator's stations. We would like to try two systems of blood pressure monitoring. The first one is system with NIR CCD camera (Near Infra Red), which measure the wide changes of the blood vessels and the second one is system, which measure the pulse transmit time (PTT). At the end we can compare the systems and get information, which system will be a right way to obtain exact continuous blood pressure information.

关键词： Pulse measurements Blood pressure Pressure measurement Time measurement Charge coupled devices Charge-coupled image sensors Biomedical monitoring Battery charge measurement Humans Foot

来源：评论

学校读者我要写书评

暂无评论

Design and Realization of Low Cost Discrete PSD controller for Power Electronics Applications

Design and Realization of Low Cost Discrete PSD Controller f...

引用

International Conference on Computer engineering and Applications (ICCEA)

作者： Ondrej Krejcar Michal Tutsch Robert Frischer Ivo Spicka Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Ostrava Czech Republic Department of Automation and Computing in Metallurgy Faculty of Metallurgy and Materials Engineering Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424460793;9780769539829

Most systems are controlling by common PID controllers. These PID controllers are available in variety possibilities. They are divided by types of controlling systems, by speed of action interference, by complexity, by robustness etc. Most of industrial controllers are very expensive and except of some basic setting they are not offering any other way, how to involve into controlling process. On the other side, developing new analog controller to control simple systems is not reasonable in financial or time issue. That's why we decided to build simple, discrete controller and implement its algorithm into single chip eight bit microcontroller (MCU). This discrete controller - PSD - is characteristic its simplicity and variability. It can control plenty of less complicated systems by a mere change of its characteristic parameters. Thanks to modern approach is possible to create a full-featured controller including power action element on an area equal to 7cm 2 .

关键词： Costs Power electronics control systems Three-term control Interference Robust control Electrical equipment industry Industrial control Process control Microcontrollers

来源：评论

学校读者我要写书评

暂无评论

Robust Adaptive Sliding-Mode control for Fuzzy Systems With Mismatched Uncertainties

引用

IEEE Transactions on Fuzzy Systems 2010年第4期18卷 700-711页

作者： Jinhui Zhang Peng Shi Yuanqing Xia Department of Automatic Control Beijing Institute of Technology Beijing China School of Engineering and Science Victoria University Melbourne VIC Australia School of Mathematics and Statistics University of South Australia Adelaide SA Australia Department of Computing and Mathematical Sciences University of Glamorgan Pontypridd UK

This paper is devoted to design adaptive sliding-mode controllers for the Takagi-Sugeno (T--S) fuzzy system with mismatched uncertainties and exogenous disturbances. The uncertainties in state matrices are mismatched and norm-bounded, while the exogenous disturbances are assumed to be bounded with an unknown bound, which is estimated by a simple and effective adaptive approach. Both state- and static-output-feedback sliding-mode-control problems are considered. In terms of linear-matrix inequalities (LMIs), both sliding surfaces and sliding-mode controllers can be easily obtained via a convex optimization technique. Finally, two simulation examples and a real experiment are utilized to illustrate the applicability and effectiveness of the design procedures proposed in this paper.

关键词： Robust control Programmable control Adaptive control Sliding mode control Fuzzy systems Uncertainty control systems Takagi-Sugeno model Linear matrix inequalities State estimation

来源：评论

学校读者我要写书评

暂无评论

Robust finite-horizon filtering of time-varying networked systems with error variance constraints

Robust finite-horizon filtering of time-varying networked sy...

引用

2010 8th IEEE International Conference on control and Automation, ICCA 2010

作者： Dong, Hongli Wang, Zidong Ho, Daniel W.C. Gao, Huijun College of Electrical and Information Engineering Daqing Petroleum Institute Daqing 163318 China Space Control and Inertial Technology Research Center Harbin Institute of Technology Harbin 150001 China Department of Information Systems and Computing Brunel University Uxbridge Middlesex UB8 3PH United Kingdom Department of Mathematics University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong

ISBN: (纸本)9781424451951

In this paper, the robust finite-horizon filtering problem is investigated for a class of uncertain nonlinear discrete time-varying stochastic systems with multiple missing measurements and error variance constraints. The stochastic nonlinearities are described by statistical means which can cover several classes of well-studied nonlinearities. The measurement missing phenomenon is also considered. Sufficient conditions are derived for a finite-horizon filter to satisfy the estimation error variance constraints. These conditions are expressed in terms of the feasibility of a series of recursive linear matrix inequalities (RLMIs). An illustrative simulation example is given to show the the effectiveness of the proposed algorithm. © 2010 IEEE.

关键词： Stochastic systems

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：