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American Control Conference

作者： Hamidreza Azimian Alireza Fatehi Babak N. Araabi Department of Mechanical and Materials Engineering The University of Western Ontario (UWO) London ON Canada Advanced Process Automation and Control (APAC) Research Group Industrial Control Center of Excellence Faculty of Electrical and Computer engineering K. N. Toosi University of Technology Tehran Iran School of Electrical and Computer Engineering University of Tehran Tehran Iran

ISBN: (纸本)9781457710957

In this paper, design of Takagi-Sugeno controllers for a twin-rotor system from empirical data is addressed. First, identification of linear models using Prediction Error Method in the presence of nonlinear distortions and in feedback systems is revisited, and it is demonstrated that feedback nonlinear systems with an integral action can be locally represented by linear models rather than affine models. Moreover, it is demonstrated that how the consistency and unbiasedness of the identified models can be improved by proper design of the experiments. In order to ensure that the unmodeled contributions in the resulting piecewise linear model are sufficiently small, a criterion is proposed based on the small-gain theorem that can be used for unfalsification of the piecewise linear model. Finally, by taking advantage of the separation principle, design of fuzzy Takag-Sugeno state feedback and observer is formulated in terms of Linear Matrix Inequalities (LMIs). The implementation results on the actual system demonstrate significant improvements with respect to the initial controller and previous work on similar systems.

关键词： Nonlinear systems Closed loop systems Observers Uncertainty Data models Predictive models

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Stable signal separation algorithm for ECG signals

Stable signal separation algorithm for ECG signals

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IEEE International Symposium on Innovations in Intelligent Systems and Applications (INISTA)

作者： Fatih Yavuz Ilgin Hüsamettin Celik Yusuf Sevim Department of Electronics and Automation Vocational High School Erzincan University Erzincan Turkey Department of Computer Technologies Tercan Vocational High School Erzincan University Erzincan Turkey Department of Electrical and Electronics Engineering Engineering Faculty Karadeniz Technical University Trabzon Turkey

Electrocardiogram (ECG) signal has biomedical signs showing the working activity of the heart muscle by human body. Being able to take these biomedical signs from human body is important for diagnosis. Although there are a lot of Independent Component Analysis (ICA) algorithms that separate ECG signals from noises in the literature, separation qualities of them depend on initial conditions. The aim of this study is to find an ICA algorithm giving the stable separation quality for different initial conditions. Experimental results show that Kernel Independent Component Analysis algorithm (KICA) provides more accurate and stable results than the other algorithms.

关键词： Electrocardiography Algorithm design and analysis Signal processing algorithms Independent component analysis Noise Kernel Educational institutions

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An experimental study on long transient oscillations in cooperative CNN rings

An experimental study on long transient oscillations in coop...

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IEEE International Workshop on Cellular Nanoscale Networks and their Applications, (CNNA)

作者： Mauro Forti Barnabás Garay Miklos Koller Luca Pancioni Department of Information Engineering University of Sienna Siena Italy Computer and Automation Institute (SZTAKI) Hungarian Academy of Sciences Budapest Hungary Faculty of Information Technology Pázmány Péter Catholic University Budapest Hungary

The paper considers a class of one-dimensional circular standard cellular neural network (CNN) arrays with a typical three-segment piecewise linear activation and two-sided cooperative (positive) interactions (a cooperative CNN ring). Numerical simulations show that in a wide range of interconnection parameters, and for a wide set of initial conditions, the solutions of a cooperative CNN ring display unexpectedly long oscillations, lasting even hundreds of cycles, before they eventually converge toward an equilibrium point. The goal of this paper is to confirm the presence of such long-transient oscillations through laboratory experiments on a simple discrete-component prototype of a cooperative CNN ring with 16 cells and to analyze some of their salient features. Analytical results are also provided to support the numerical and experimental findings.

关键词： Oscillators Neurons Transient analysis Convergence Integrated circuit interconnections MATLAB Integrated circuit modeling

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Execution Data Connected Simulation for Production Operation Planning and Control

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IFAC Proceedings Volumes 2012年第6期45卷 1604-1608页

作者： B. Kádár A. Pfeiffer L. Monostori Fraunhofer Project Center on Production Management and Informatics Computer and Automation Research Institute Hungarian Academy of Sciences Budapest Hungary (Tel: +36-1-279-6176) Department of Manufacturing Science and Technology Faculty of Mechanical Engineering Budapest University of Technology and Economics Budapest Hungary

Due to the large number of the resources, the frequent reengineering of manufacturing processes and the often changing product types, the maintenance of the simulation model and the provision of up-to-date input data are almost always difficult. The paper introduces new quantitative analysis method including processing time and batch calculation algorithms applied in the automatic building of discrete-event simulation systems. The simulation model and the mentioned algorithms are both directly interfaced with real execution databases and the overall solution supports the shop-floor managers in making control decisions. The applicability of the elaborated approach is illustrated by the results of experiments relying on real historical data.

关键词： Shop-floor oriented systems Simulation Manufacturing systems Production control

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Evaluations of Different Simultaneous Localization and Mapping (SLAM) Algorithms

Evaluations of Different Simultaneous Localization and Mappi...

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Annual Conference on IEEE Industrial Electronics Society

作者： Gurkan Tuna Kayhan Gulez V. Cagri Gungor T. Veli Mumcu Trakya University Department of Computer Programming Yildiz Technical University Electrical-Electronics Faculty Control and Automation Eng. Dept. Bahcesehir University Faculty of Engineering Department of Computer Engineering

ISBN: (纸本)9781467324199

Simultaneous Localization and Mapping (SLAM) algorithms with multiple autonomous robots have received considerable attention in recent years. In general, SLAM algorithms use odometry information and measurements from exteroceptive sensors of robots. The accuracy of these measurements and the performance of the corresponding SLAM algorithm directly affect the overall success of the system. This paper presents comparative performance evaluations of three Simultaneous Localization and Mapping (SLAM) algorithms using Extended Kalman Filter (EKF), Compressed Extended Kalman Filter (CEKF) and Unscented Kalman Filter (UKF). Specifically, it focuses on their SLAM performances and processing time requirements. To show the effect of CPU power on the processing time of SLAM algorithms, two notebooks and a netbook with different specifications have been used. Comparative simulation results show that processing time requirements are consistent with the computational complexities of SLAM algorithms. The results we obtained are consistent with the CPU power tests of independent organizations and show that higher processing power decreases processing time accordingly. The results also show that CEKF is more suitable for outdoor SLAM applications where there are a lot of natural and artificial features.

关键词： Simultaneous localization and mapping Navigation Visualization Power measurement Estimation MONOS devices

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Smart home network mechanism via cloud computing

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Journal of Computational Information Systems 2012年第23期8卷 10035-10042页

作者： Liu, Li Fu, Xiaodong Jiang, Hong Lv, Yang Faculty of Information Engineering and Automation Kunming University of Science and Technology Kunming 650500 China Computer Technology Application Key Lab of Yunnan Province Kunming 650500 China National Engineering Research Center of Digital Life State-Province Joint Laboratory of Digital Home Interactive Applications Sun Yat-sen University Guangzhou 510006 China

Traditional smart home system based on TCP/IP network applies TC35i cell phone module in smart home controller, and realizes function of short message service by GSM network. This realization model is complex, high-cost, hard to test, and it cannot ensure the short messages could be received and sent successfully. Using the advantages of Cloud computing system, we present a kind of smart home network mechanism solution based on Cloud computing in this paper. Two important constituents in the proposed solution, i.e., SGIP exterior short message gateway and residential quarter information system are described in detail. Moreover, the error ratio of system decreases markedly by improving the short message interface. The proposed smart home network mechanism solution via Cloud computing can be a referential model of the digital life application research based on Cloud computing platform. ©2012 by Binary Information Press.

关键词： Cloud computing

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Determining biochemical reaction network structures for kinetic polynomial models with uncertain coefficients

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AIP Conference Proceedings 2012年第1期1479卷 2427-2430页

作者： Gábor Szederkényi Z. A. Tuza Katalin M. Hangos Process Control Research Group Computer and Automation Research Institute Hungarian Academy of Sciences. Kende u. 13-17 H-1111 Budapest Hungary and Faculty of Information Technology Pázm Hungary Faculty of Information Technology Pázmány Péter Catholic University Práter u. 50/a H-1083 Budapest Hungary Process Control Research Group Computer and Automation Research Institute Hungarian Academy of Sciences. Kende u. 13-17 H-1111 Budapest Hungary and Dept. of Electrical Engineering and Informatio Hungary

A numerical method is proposed in this paper for the computation of dense and sparse reaction network structures for kinetic polynomial models with uncertain parameters represented as intervals. The problem is traced ...

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A self-tuning decentralized PI control for multivariable plant

A self-tuning decentralized PI control for multivariable pla...

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IEEE International Conference on Control System, Computing and engineering (ICCSCE)

作者： S. I. Samsudin M. F. Rahrnat Norhaliza Abdul Wahab Mashitah Che Razali Muhamad Sani Gaya Sy Najib Sy Salim Faculty of Electronics and Computer Engineering Universiti Teknikal Malaysia Melaka Durian Tunggal Melaka Malaysia Universiti Teknologi Malaysia Skudai Johor MY Department of Control and Instrumentation Engineering Universiti Teknologi Malaysia Skudai Malaysia Department of Control Instrumentation and Automation Universiti Teknikal Malaysia Melaka Durian Tunggal Melaka Malaysia

Tuning of controller is one of the most basic functions in control engineering in obtaining optimal control parameters and hence achieving optimal dynamic responses of the system. The work presents the self-tuning PI controller that potential to auto-tune the controller parameters and adapting the changes in controlled process parameter for a MIMO system. The decentralized PI controller with an adaptive interaction algorithm is developed and tested to nonlinear multivariable wastewater treatment plant. It is aims to self-tune the PI control parameters in regulating the substrate and DO concentrations from a steady state operating point. It was observed that the proposed control structure and the tuning algorithm were successfully tracks the desired set-point with considerable effects in noisy environment.

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Automatic Simulation Model Generation Based on PLC Codes and MES Stored Data

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Procedia CIRP 2012年 3卷 67-72页

作者： G. Popovics A. Pfeiffer B. Kádár Z. Vén L. Kemény L. Monostori Fraunhofer Project Center on Production Management and Informatics Computer and Automation Research Institute Hungarian Academy of Sciences Kende u. 13-17. Budapest H-1111 Hungary Faculty of Mechanical Engineering Budapest University of Technology and Economics Muegyetem rkp. 3-9. K I/24 Budapest H-1111 Hungary

One of the most widespread techniques to evaluate various aspects of an existing manufacturing system is discrete-event simulation (DES). However, building a simulation model of a manufacturing system needs great resource expenditures. Automated data col-lection and model buildup can drastically reduce the time of the design phase as well as support model reusability. Since most of the manufacturing systems are controlled by low level controllers they store structure and control logic of the system to be modeled by a DES system. The paper introduces an ongoing research of PLC code processing method for automatic simulation model gen-eration of a conveyor system of a leading automotive factory.

关键词： Programmable Logic Controllers Manufacturing computer Simulation

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Decentralized topology control for robotic networks with limited field of view sensors

Decentralized topology control for robotic networks with lim...

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American Control Conference (ACC)

作者： Donato Di Paola Roberta De Asmundis Andrea Gasparri Alessandro Rizzo Faculty of Engineering Computer Science and Automation Department (DIA) University of Rome Roma Tre Rome Italy Department of Statistical Sciences (DSS) University of Roma La Sapienza Rome Italy Dipartimento di Elettrotecnica ed Elettronica (DEE) Politecnico di Bari Bari Italy

ISBN: (纸本)9781457710957

Preserving connectivity of a network topology is a crucial aspect for multi-robot systems in order to perform almost any collaborative task. This problem turns out to be significantly challenging in the case of a heterogeneous multirobot system equipped with different sensors with limited field of view. Such an interaction scheme, in fact, is described by directed graphs (digraphs), for which, a few approaches have still been presented in literature. This paper addresses the problem of estimating an approximated minimum strongly connected digraph contained in a given digraph. A novel decentralized approach is proposed and its suitability is confirmed by simulations.

关键词： Robot sensing systems Approximation algorithms Maintenance engineering Network topology Topology

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