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Stability Analysis of Fuzzy Logic Control Systems for a Class of Nonlinear SISO Discrete-Time Systems

IFAC Proceedings Volumes 2011年第1期44卷 13612-13617页

作者： Radu-Emil Precup Marius-Lucian Tomescu Stefan Preitl Emil M. Petriu Claudia-Adina Dragoş Department of Automation and Applied Informatics “Politehnica” University of Timisoara Bd. V. Parvan 2 RO-300223 Timisoara Romania (Tel: +40-256403229 Computer Science Faculty “Aurel Vlaicu” University of Arad Complex Universitar M Str. Elena Dragoi 2 RO-310330 Arad Romania Department of Automation and Applied Informatics “Politehnica” University of Timisoara Bd. V. Parvan 2 RO-300223 Timisoara Romania School of Information Technology and Engineering University of Ottawa 800 King Edward Ottawa Ontario K1N 6N5 Canada

Abstract This paper suggests a new stability analysis theorem dedicated to a class of fuzzy logic control systems. The fuzzy logic control systems consist of nonlinear Single Input-Single Output (SISO) discrete-time processes controlled by Takagi-Sugeno fuzzy logic controllers. The stability analysis is conducted on the basis of Lyapunov's direct method with quadratic Lyapunov function candidates. The theorem proves that if the derivative of the Lyapunov function candidate is negative definite in the active region of each fuzzy rule then the fuzzy logic control system will be asymptotically stable in the sense of Lyapunov. Sufficient stability conditions are offered. An example related to the design of a stable fuzzy logic control system for the discrete-time Lorenz chaotic system and simulation results are included.

关键词： Discrete-time systems fuzzy logic control Lyapunov function candidates nonlinear systems stability analysis

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Towards big data science in the decade ahead from ten years of InCoB and the 1st ISCB-Asia Joint Conference

Towards big data science in the decade ahead from ten years ...

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10th International Conference on Bioinformatics and 1st ISCB Asia Joint Conference 2011: Bioinformatics, InCoB 2011/ISCB-Asia 2011

作者： Ranganathan, Shoba Schönbach, Christian Kelso, Janet Rost, Burkhard Nathan, Sheila Tan, Tin Wee Department of Chemistry and Biomolecular Sciences ARC Centre of Excellence in Bioinformatics Macquarie University Sydney NSW 2109 Australia Department of Biochemistry Yong Loo Lin School of Medicine National University of Singapore Singapore 117597 Singapore Department of Bioscience and Bioinformatics Graduate School of Computer Science and Systems Engineering Kyushu Institute of Technology Fukuoka 820-8502 Japan Department of Evolutionary Genetics Max Planck Institute for Evolutionary Anthropology 04103 Leipzig Germany Department for Bioinformatics and Computational Biology Faculty for Informatics Technical University Munich 85748 Garching Germany School of Biosciences and Biotechnology Faculty of Science and Technology Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor D.E. Malaysia Malaysia Genome Institute Jalan Bangi 43000 Kajang Selangor D.E. Malaysia

The 2011 International Conference on Bioinformatics (InCoB) conference, which is the annual scientific conference of the Asia-Pacific Bioinformatics Network (APBioNet), is hosted by Kuala Lumpur, Malaysia, is co-organized with the first ISCB-Asia conference of the International Society for Computational Biology (ISCB). InCoB and the sequencing of the human genome are both celebrating their tenth anniversaries and InCoB's goalposts for the next decade, implementing standards in bioinformatics and globally distributed computational networks, will be discussed and adopted at this conference. Of the 49 manuscripts (selected from 104 submissions) accepted to BMC Genomics and BMC Bioinformatics conference supplements, 24 are featured in this issue, covering software tools, genome/ proteome analysis, systems biology (networks, pathways, bioimaging) and drug discovery and design. © 2011 Ranganathan et al;licensee BioMed Central Ltd.

关键词： Bioinformatics

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Comparative analysis versions of BPMN and its support with control-flow patterns

Comparative analysis versions of BPMN and its support with c...

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33rd International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2010

作者： Kous, Katja Institute of Informatics University of Maribor Faculty of Electrical Engineering and Computer Science Smetanova ulica 17 2000 Maribor Slovenia

ISBN: (纸本)9789532330502

In this paper we will present the notation for modeling business processes called Business Process Modeling Notation (BPMN). Differences between all versions of BPMN (BPMN 1.0, BPMN 1.1, BPMN 1.2, and BPMN 2.0) are described. After that description, a presentation of workflow patterns will follow. Our research includes 43 types of control-flow patterns. Research was also based on the comparative analysis of supporting BPMN 2.0 elements with control-flow patterns performance support.

关键词： Flow patterns

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Detection of image fragments related by affine transforms: Matching triangles and ellipses

Detection of image fragments related by affine transforms: M...

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2010 International Conference in Information Science and Applications, ICISA 2010

作者： Paradowski, Mariusz Śluzek, Andrzej Nanyang Technological University School of Computer Engineering Singapore Wroclaw University of Technology Institute of Informatics Poland Nicolaus Copernicus University Faculty of Physics Astronomy and Informatics Poland

ISBN: (纸本)9781424459438

Visual information retrieval systems are often constructed upon the notion of image similarity. The concept of image similarity may be defined in many ways: from a pure visual level, where we seek identical images, to a semantic level related with human perception the image. In our research we address the first approach, we explore topics of image matching (image alignment), however in terms of image fragments. The goal of image fragment matching is to find similar parts of two images, without a given model of particular objects present on images. It is also assumed that the number of similar objects (image fragments) is not known. In this paper we present a novel method for image fragment matching. It uses two ellipse pairs as an elementary object for image geometry reconstruction. The method is an extension of the previously proposed approach based on triangles. We have decided to replace triangles with a different geometrical structure to reduce computational complexity from O(n 3) to O(n2), where n is the number of coherent key regions. We discuss and compare both matching methods both in terms of quality and processing efficiency. ©2010 IEEE.

关键词： Semantics

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Performance evaluation of low-dimensional SIFTs

Performance evaluation of low-dimensional SIFTs

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2010 17th IEEE International Conference on Image Processing, ICIP 2010

作者： Duanduan, Yang Sluzek, Andrzej School of Computer Engineering Nanyang Technological University Singapore Singapore Faculty of Physics Astronomy and Informatics Nicolaus Copernicus University Poland

ISBN: (纸本)9781424479948

The scale-invariant feature transform (SIFT) descriptor has been widely applied in many fields due to its resistance to common image transformations. However, the dimension of SIFT is high which makes it not practical in limited-memory systems. Thus, some lower-dimension SIFTs are proposed by using subspace projection techniques. The most popular technique is Principle Component Analysis (PCA) which can produce two different lower-dimension SIFTs, PCA-SIFT and PSIFT. They apply PCA on gradient field of local patches or on a set of training descriptors, respectively. However, the other subspace techniques can be also used. This paper proposes two more low-dimensional SIFTs (namely LPP-SIFT and SPCA-SIFT) by incorporating manifold subspace and sparse eigenspace learning techniques (Locality Preserving Projection and Sparse PCA are used as the exemplary implementations). Although these techniques are not novel, our results demonstrate they can be used to produce low-dimensional SIFTs. More importantly, by comparing their performance to the existing low-dimension SIFTs, we show which of them are more suitable for image matching. © 2010 IEEE.

关键词： Principal component analysis

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Numerical simulations of surface plasmon gap waveguides for nanometric optical circuits

Numerical simulations of surface plasmon gap waveguides for ...

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3rd International Conference on Communications and Electronics, ICCE 2010

作者： Tanaka, Kazuo Minh, Tran Trong Tanaka, Masahiro Katayama, Kiyofumi Department of Computer Engineering Gifu University Gifu City Japan Faculty of Administration and Informatics University of Hamamatsu Hamamatsu City Japan

ISBN: (纸本)9781424470587

Numerical simulations for understanding fundamental characteristics of the surface plasmon polariton gap waveguide (SPGW) has been demonstrated. The SPGW excited through an aperture have been demonstrated by the three-dimensional simulations using a volume integral equation method. Complex propagation constants calculated by the Method of Lines (MoL) has been shown. Applications of SPGWs to the nanosize E-plane planar optical circuits are also demonstrated. ©2010 IEEE.

关键词： Surface plasmon resonance

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Lung cancer diseases diagnostic asistance using Gray color analysis

Lung cancer diseases diagnostic asistance using Gray color a...

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International Conference on Computational Intelligence, Modelling and Simulation

作者： Paulus Gaol, Ford Lumban Graduate Program in Informatics Engineering Department of Computer Science Bina Nusantara University Jakarta Indonesia Faculty of Computer Science Bina Nusantara University Jakarta Indonesia

ISBN: (纸本)9780769542621

Errors in diagnosing the disease is a critical risk that must be faced by any person giving treatment to the hospital. Medical treatment can not always be done with perfect accuracy. Lung cancer is one of the most deadly disease that prone to misdiagnose. In general, some practitioners tend to read cancer in x-ray rontgen image as tumor this could be fatal. To generate a diagnose, a general practitioner use three kind of examination i.e : patient History, Radiologic examination, phisical examination. In this paper, Gray color for image indexing and retrieval are investigated. The features are derived based on the statistical distribution of Harralick feature from image sample. By utilizing the proposed invariant features, the similarity measure between query and database images provides reliable retrieval results. © 2010 IEEE.

关键词： Diseases

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Automatic visual object formation using image fragment matching

Automatic visual object formation using image fragment match...

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作者： Paradowski, Mariusz Śluzek, Andrzej Institute of Informatics Wroclaw University of Technology Poland School of Computer Engineering Nanyang Technological University Singapore Singapore Faculty of Physics Astronomy and Informatics Nicolaus Copernicus University Poland

ISBN: (纸本)9788360810279

Low-level vision approaches, such as local image features, are an important component of bottom-up machine vision solutions. They are able to effectively identify local visual similarities between fragments of underlying physical objects. Such vision approaches are used to build a learning system capable to form meaningful visual objects out of unlabelled collections of images. By capturing similar fragments of images, the underlying physical objects are extracted and their visual appearances are generalized. This leads to formation of visual objects, which (typically) represent specific underlying physical objects in a form of automatically extracted multiple template images. © 2010 IEEE.

关键词： Image processing

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Applying usability principles to the design of a web interface for the "iLab - Inventory manager for electronics laboratory"

Applying usability principles to the design of a web interfa...

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作者： Pinho, Raquel Sousa, Armando Restivo, André Department of Electrical and Computer Engineering Faculty of Engineering University of Porto Porto Portugal Department of Informatics Engineering Faculty of Engineering University of Porto Porto Portugal INESC-Porto Faculty of Engineering University of Porto Porto Portugal

ISBN: (纸本)9789899624733

This paper presents a case study of an existing web application of inventory management for electronics laboratories, accounting for usability principles and best practices for user interface design. The iLab project efficiently manages the inventory, requests, users (borrowings, purchases, etc.) and associated historic and workflow information. This enables users to queue requests and track their statuses. Usability is critical for for the success of such application. A web based interface is to be designed using usability principles, making sure all end-users use the application in an intuitive and effective way. To achieve these goals the study consisted on four phases: plan, analyze, design and, test and refine. After this study it has been concluded that with this methodology developers are able to create more user-friendly and efficient applications.

关键词： Inventory control

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engineering for industrial robots in content based virtual space

Engineering for industrial robots in content based virtual s...

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

作者： Horváth, László Rudas, Imre J. Jezernik, Karel Institute of Intelligent Engineering Systems John von Neumann Faculty of Informatics Óbuda University Budapest Hungary Institute of Robotics Faculty of Electrical Engineering and Computer Science University of Maribor Maribor Slovenia

ISBN: (纸本)9781424468867

One of the main recent achievements in engineering is description of complex products and their physical environment in a single object model. This model has capabilities to serve engineering from the first specification of a product to recycling. New research programs were needed in order to establish a new style of engineering where engineers communicate model creation and application procedures. The authors joined to these efforts and developed new modeling methods for the above purpose. In this paper they introduce some of these methods considering needs by the complex and knowledge intensive engineering for robot systems. Paper starts with an outline of application of virtual spaces in robot system modeling. Following this, a content based contextual object definition is explained considering robotic application. Next, application of human control by contextual spaces for adaptive definition of engineering objects and the related control of product definition are shown. Finally, object space for robot system is outlined as application related issue of the proposed modeling. © 2010 IEEE.

关键词： Industrial robots

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