检索结果-内蒙古大学图书馆

Siberian Conference on Control and Communications (SIBCON)

作者： V. Skorpil J. Stastny Faculty of Electrical Engineering and Communication Brno University of Technology Brno Czech Republic Brno University of Technology Institute of Automation and Computer Science Brno Czech Republic

The wavelet transform is a comparatively new and fast developing method for analysing signals. The main advantage of applying the wavelet transform to the detection of edges in an image is the possibility of choosing the size of the details that are detected. The size of detected edges is set by the wavelet scale. In the case of the discrete wavelet transform the choice of the scale is performed by multiple signal passage through the wavelet filter. When processing a 2-D image, the wavelet analysis is performed separately for the horizontal and the vertical function. The vertical and the horizontal edges are thus detected separately. The wavelet transform splits the input signal into two components. One contains the low-frequency (LP) part of input signal, which corresponds to major changes in the function (individual objects in the image, etc.). The other part contains the high-frequency (HP) part of input signal, which corresponds to details in the function (noise, edges, etc.). This signal component is not processed on the next level of transformation.

关键词： Wavelet analysis Wavelet transforms Image analysis Image edge detection Discrete wavelet transforms Signal analysis Filters Performance analysis Low-frequency noise Signal processing

来源：评论

学校读者我要写书评

暂无评论

An integrated approach to intelligent modeling of industrial plants

An integrated approach to intelligent modeling of industrial...

引用

IEEE International Symposium on Computational Intelligence in Robotics and automation (CIRA)

作者： N. Christova M. Hadjiski G. Vachkov C. Stylios Department of Automation of Industry University of Chemical Technology and Metallurgy-Sofia Sofia Bulgaria Department of Reliability Information Systems Engineering Faculty of Engineering Kagawa University Takamatsu Japan Department of Computer Science University of Ioannina (UoI) Ioannina Greece

In this paper an integrated hierarchical soft computing methodology for modeling of industrial plants by aggregating models of different types is presented. The problem of designing adequate and reliable models for non-linear plants with large uncertainties in under consideration here. The proposed approach has the ability to model system behavior under different circumstances and it is especially efficient for complex industrial systems with immeasurable process variables and large uncertainties. A fuzzy cognitive map (FCM) is used to aggregate multiple models and to create a hybrid model, which makes a selection between the different models, according to the current operational conditions of the industrial process. The proposed methodology is considered as a promising way to cope with the modeling of a real industrial plant.

关键词： Industrial plants Fuzzy cognitive maps Uncertainty Fuzzy logic Reliability engineering automation Chemical technology Information systems Systems engineering and theory Cities and towns

来源：评论

学校读者我要写书评

暂无评论

Composite systems control by combined math-analytical and FS/NN computing approach

引用

IFAC Proceedings Volumes 2003年第7期36卷 7-18页

作者： Georgi M. Dimirovski Yuan-Wei Jing Jun Zhao Si-Ying Zhang Dogus University Department of Computer Engineering Faculty of Engineering Acibadem Kadiköy TR-34722 Istanbul Turkey Fax# +90-216-327-9631 SS Cyril and Methodius University Institute of Automation & Systems Eng. Faculty of Electrical Engineering MK-1000 Skopje R. of Macedonia Northeastern University Institute of Control Science School of Information Science & Eng. Shenyang Liaoning P.R. of China Fax# +90-24-2389-0912

A control systems engineering approach, employing a two-level overall system architecture and different but compatible formalisms for system representation on the upper and lower levels, has been investigated in detail. One design alternative is based on employing fuzzy-system approximators and solving for the adaptive tracking of the given, arbitrary, desired system outputs. The other alternative is based on state equations of composite systems and the use of neural-network approximators to deal with uncertainties and control adaptation. In both alternatives similarity property of subsystems has been exploited. Both designs can be implemented within the standard computer process control technology, and are therefore believed to be promising in applied systems engineering.

关键词： Complex composite systems fuzzy systems neural networks nonlinear systems

来源：评论

学校读者我要写书评

暂无评论

Decision support system for multicriterial R&D and information systems projects selection

Decision support system for multicriterial R&D and informati...

引用

作者： Klapka, Jindřich Piňos, Petr Faculty of Mechanical Engineering Institute of Automation and Computer Science Technical University of Brno Brno Moravia Czech Republic

Decision support system described here makes it possible to carry out multicriterial selection of hundreds of projects simultaneously, with tens of criterion functions with bivalent variables including polynomial ones and quotients of linear functions, and tens of resources limitations. Stewart's idea [J. Oper. Res. Soc. 42 (1) (1991) 17] of the special scalarizing function based on the modified reference point approach, which has been hitherto applied for linear benefits and for balance criteria functions only, and its optimization by effective gradient method is used here in the situation described by Santhanam and Kyparisis [Comput. Oper. Res. 22 (8) (1995) 807], involving synergistic effects of second- and third-orders in benefit and cost criterion function, and in resource requirements respecting resource sharing and hierarchical contingency relationships among candidate projects. In addition, the system enables us making the dialogue of the solution in a way of adaptive creation of weights of criterion functions and also flexible projects portfolio changes. A test of efficiency is presented. © 2002 Elsevier science B.V. All rights reserved.

关键词： Project management

来源：评论

学校读者我要写书评

暂无评论

Massive motion control of sub-millimeter objects

Massive motion control of sub-millimeter objects

引用

7th International Workshop on Advanced Motion Control, AMC '02 - Proceedings

作者： Šafarič, Riko Uran, Suzana Winther, Tobias K. University of Maribor Faculty of Electrical Engineering and Computer Science Smetanova 17 2000 Maribor Slovenia Rensselaer Polytechnic Institute Center for Automation Technologies 110 8th Street Troy New York 12180 United States

The current lack of manufacturing techniques for very high volume handling of small objects presents a technology barrier to the commercial success in various fields like micro electromechanical systems (MEMS). A fundamentally new approach to automated massive parallel manipulation of small-sized parts is explored in this paper. The paper is exploring a pneumatic active surface device (PASD). The appropriate choice of force, caused by blowing or sucking air-flow through tubes of the pneumatic active surface device, is shown to cause objects placed on the array to be moved in manners that are useful. It offers great flexibility and speed and it can be employed to position, orient, identify, sort, feed, and assemble parts or objects. In addition several objects can be controlled simultaneously. This paper describes experimental work done on a prototype pneumatic active surface device, especially open-loop and closed-loop positioning control techniques for sub-millimeter rigid objects. © 2002 IEEE.

关键词： Motion control

来源：评论

学校读者我要写书评

暂无评论

On complex non-linear systems with symmetries: controllability preserving decomposition

On complex non-linear systems with symmetries: controllabili...

引用

IEEE International Conference on Electronics, Circuits and Systems (ICECS)

作者： G.M. Dimirovski Y.-W. Jing J. Zhao T.D. Kolemisevska-Gugulovska Institute of Automation & Systems Engineering Faculty of Electrical Engineering Ss Cyril and Methodius University Skopje Macedonia Department of Computer Engineering Faculty of Engineering Dogus University Istanbul Turkey Institute of Control Science School of Information Science & Engineering Northeastern University Shenyang Liaoning China Institute of Automation & Systems Engineering Faculty of Electrical Engineering Ss Cyril and Methodius University Skopje Macedonia

In this paper, the problems of isomorphic decomposition and controllability of a class of nonlinear systems possessing symmetries, on the basis of quotient systems, is studied. The isomorphic decomposition formations of these systems are derived. Finally, it is shown that controllability of the original systems can be determined by that of the subsystems, which are obtained through isomorphic decomposition. The corresponding sufficient and necessary conditions are given. Two new theoretical results have been proved.

关键词： Controllability Nonlinear control systems Control systems Nonlinear systems Automatic control Information science automation Systems engineering and theory Feedback Mathematical model

来源：评论

学校读者我要写书评

暂无评论

Massive motion control of sub-millimeter objects

Massive motion control of sub-millimeter objects

引用

International Workshop on Advanced Motion Control (AMC)

作者： R. Safaric S. Uran T.K. Winther Faculty of Electrical Engineering and Computer Science University of Maribor Maribor Slovenia Center for Automation Technologies Rensselaer Polytechnic Institute New York USA

The current lack of manufacturing techniques for very high volume handling of small objects presents a technology barrier to the commercial success in various fields like micro electromechanical systems (MEMS). A fundamentally new approach to automated massive parallel manipulation of small-sized parts is explored in this paper. The paper explores a pneumatic active surface device (PASD). The appropriate choice of force, caused by blowing or sucking air-flow through tubes of the pneumatic active surface device, is shown to cause objects placed on the array to be moved in manners that are useful. It offers great flexibility and speed and it can be employed to position, orient, identify, sort, feed, and assemble parts or objects. In addition several objects can be controlled simultaneously. This paper describes experimental work done on a prototype pneumatic active surface device, especially open-loop and closed-loop positioning control techniques for sub-millimeter rigid objects.

关键词： Motion control Open loop systems Robotics and automation Micromechanical devices Force control Communication system control Electromechanical systems Prototypes Robot sensing systems Grippers

来源：评论

学校读者我要写书评

暂无评论

Decomposition of complex linear systems via hierarchical similarity structure

Decomposition of complex linear systems via hierarchical sim...

引用

IEEE International Conference on Electronics, Circuits and Systems (ICECS)

作者： Y.-W. Jing G.M. Dimirovski J. Zhao M.J. Stankovski Institute of Control Science School of Information Science & Engineering Northeastern University Shenyang Liaoning China Institute of Automation & Systems Engineering Faculty of Electrical Engineering Ss Cyril and Methodius University Skopje Macedonia Department of Computer Engineering Faculty of Engineering Dogus University Istanbul Turkey

In this paper, the problem of system decomposition of complex linear dynamical systems, by exploiting the similarity property, is studied. System decompositions were sought in terms of similarity hierarchical structures. Three new theoretical results were proved. A method for constructing the transformation has been derived. The conditions for such decomposition of complex linear systems are given.

关键词： Linear systems Control systems Systems engineering and theory Design engineering Interconnected systems Robots Automatic control Information science automation Modems

来源：评论

学校读者我要写书评

暂无评论

Spectral and spatial parameterization of multi-date satellite images for change detection of linear features

Spectral and spatial parameterization of multi-date satellit...

引用

IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： G. Avraham M. Shoshany N.S. Netanyahu Environmental Information Laboratory Bar-llan University Ramat-Gan Israel Geodetic Engineering Division Faculty of Civil Engineering Technion-Israel Institute of Technology Haifa Israel Center of Automation Research University of Maryland College Park MD USA Department of Mathematics and Computer Science Bar-llan University Ramat-Gan Israel

A new technique utilizing combination of feature extraction by change vector analysis and analysis of distances between features allows improvement in change detection of linear features such as roads and water channels. The technique reduces false detection of changes due to image calibration differences, illumination differences and misregistration. The method was applied to areas of steep climatic gradient between Mediterranean and extreme desert regions.

关键词： Satellites Image analysis Remote sensing computer vision Vectors Information analysis Roads Calibration Convolution Pixel

来源：评论

学校读者我要写书评

暂无评论

A neural network-based technique for change detection of linear features and its application to a Mediterranean region

A neural network-based technique for change detection of lin...

引用

IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： I. Feldberg N.S. Netanyahu M. Shoshany Department of Mathematics and Computer Science Bar-llan University Ramat-Gan Israel Center for Automation Research University of Maryland College Park MD USA Geodetic Engineering Division Faculty of Civil Engineering Technion Israel Institute of Technology-Technion Haifa Israel Environmental Information Laboratory Department of Geography Bar-llan University Ramat-Gan Israel

An artificial neural network (ANN) for change detection from multi-temporal satellite images, which was reported in I. Feldberg (2001), has been further developed and tested, as part of a study of an area of high spatio-temporal heterogeneity along a climatic gradient between humid and and climate regions. Four recognition classes, "positive change", "negative change", "false change", and "no change" were learned by a backpropagation feedforward ANN and then applied to Landsat images that were acquired over the study area in 1992 and 1997. A comparison with existing classification techniques indicates, in many instances, significantly improved performance due to the ANN developed.

关键词： Neural networks computer vision Artificial neural networks Electronic mail Neurons Satellites Remote sensing Monitoring Data preprocessing Application software

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：