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2009 7th Asian control Conference, ASCC 2009

作者： Xu, Dabo Huang, Lie Applied Control and Computing Laboratory Department of Mechanical and Automation Engineering Chinese University of Hong Kong Shatin N.T. Hong Kong

This paper presents the solution of the global robust output regulation problem for a class of nonlinear systems with relative degree one without knowing the control direction. The result is also applied to an asympto... 详细信息

ISBN: (纸本)9788995605691

关键词： Nonlinear systems

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Comparison of data driven models for the valuation of residential premises using KEEL

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International Journal of Hybrid Intelligent Systems 2010年第1期7卷 3-16页

作者： Lasota, Tadeusz Mazurkiewicz, Jacek Trawiński, Bogdan Trawiński, Krzysztof Department of Spatial Management Wrocław University of Environmental and Life Sciences ul. Norwida 25/27 50-375 Wrocław Poland European Centre for Soft Computing Edificio Científico-Tecnológico 3 Planta C. Gonzalo Gutiérrez Quirós S/N 33600 Mieres Asturias Spain Institute of Computer Engineering Control and Robotics Wrocław University of Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland Institute of Informatics Wrocław University of Technology Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland

The experiments aimed to compare data driven models for the valuation of residential premises were conducted using KEEL (Knowledge Extraction based on Evolutionary Learning) system. Twelve different regression algorithms were applied to an actual data set derived from the cadastral system and the registry of real estate transactions. The 10-fold cross validation and statistical tests were applied. The lowest values of MSE provided models constructed and optimized by means of support vector machine, artificial neural network, decision trees for regression and quadratic regression, however differences between them were not statistically significant. Worse performance revealed algorithms employing evolutionary fuzzy rule learning. The experiments confirmed the usefulness of KEEL as a powerful tool with its numerous evolutionary algorithms together with classical learning approaches to carry out laborious investigation on a practical problem in a relatively short time.

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Determination of optimal mutation interval for μga leased on the performance analysis of GA and μgA 10

Determination of optimal mutation interval for μga leased o...

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2009 10th European control Conference, ECC 2009

作者： Duzanec, D. Kovacic, Z. Ziegler D.o.o. Construction and Development Department Zagreb Croatia University of Zagreb Faculty of EEandC Department of Control and Computing Engineering Zagreb Croatia

ISBN: (纸本)9783952417393

In order to provide the fastest search for optimal solution, both the structure and the parameters of genetic algorithms (GA) should be optimized. The advantage of recently introduced micro-genetic algorithms (μGA) is that they operate with smaller genetic populations than standard GA. This paper describes the method of determining an optimal (best possible) mutation interval for μGA based on the analysis of the influence of mutation on the performance of GA and μGA. The results obtained analytically and numerically for a selected vector optimization problem show the practical value of the method. © 2009 EUCA.

关键词： Genetic algorithms

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Economic control based on Four-Element Connection Numbers control (FECNC)

Economic control based on Four-Element Connection Numbers Co...

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2009 International Conference on Computational Intelligence and Security, CIS 2009

作者： Zhang, Yang He, Zhongxiong State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing China School of Computing and Computer Engineering Beijing Jiaotong University Beijing China

ISBN: (纸本)9780769539317

The market economic system is a large complex system. In this paper, we define Four-Element Connection Numbers control which combines Set Pair Analysis, Extension Methods, etc, applies to economic control, which is efficient and accurate response to the state and trend of the economic system, could control the economic potential develop to the direction of our expectations. At last, we provide the method of prediction system and automatic control based on FECNC, and applies it to the system prediction of export economy. © 2009 IEEE.

关键词： Economic analysis

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Extending functionality of RF Ultrasound positioning system with dead-reckoning to accurately determine mobile robot's orientation

Extending functionality of RF Ultrasound positioning system ...

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IEEE Conference on control Technology and Applications (CCTA)

作者： Andreja Kitanov Vedran Tubin Ivan Petrovic Department of Control and Computer Engineering Faculty of Electrical Engineering and Computing Zagreb Croatia

In this paper we show how to accurately track position and orientation of a mobile robot using positioning only RF ultrasound transceiver system and dead-reckoning. The solution is based on geometrical displacement of the positioning device from the axis of rotation of the robot which brings dependency in position of the device and robot's orientation and enables the correction of the absolute orientation of the robot. Estimation is done via extended Kalman filter with variable discretization time because of stochastic nature of measurement arrival times. We describe and analyze the main sources of noise in odometry and position device readings. We also suggest the method for measurement outlier elimination derived from empirical measurement analysis. Experimental verification of the proposed method is presented that yields position error aprox. 1plusmn2.5 centimeters and 1plusmn2 degrees.

关键词： Radio frequency Ultrasonic imaging Mobile robots Robot sensing systems Global Positioning System Position measurement Transceivers Stochastic resonance Time measurement control engineering computing

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Finite-Time Parameter Identification via High-Order Sliding Mode Observer

Finite-Time Parameter Identification via High-Order Sliding ...

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American control Conference

作者： J. Davila M. Basin L. Fridman General Direction of Academic Computing Services (DGSCA-UNAM) on leave to Centro de Investigacion y Estudios Avanzados (CINVESTAV-IPN). Av. IPN 2508 Col. San Pedro Zacatenco Gustavo A. Madero Mexico D.F. Autonomous University of Nuevo Leon (UANL). Av. Universidad s/n. Ciudad Universitaria. San Nicols de los Garza Nuevo Len C.P. 66451 Mexico Department of Control Division of Electrical Engineering Engineering Faculty National Autonomous University of Mexico Ciudad Universitaria Universidad Nacional Autonoma de Mexico 04510 Mexico D.F.

ISBN: (纸本)9781424474264

This paper presents a parameter identification method involving a high-order sliding mode observer. The method is based on the equivalent output injection technique. Using the finite-time convergence of the sliding mode observer, an algebraic reconstruction algorithm is designed to identify the system parameters through a finite time window.

关键词： Parameter estimation Uncertainty Algorithm design and analysis Convergence Observers Nonlinear dynamical systems Sliding mode control Linear systems State estimation Nonlinear systems

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Hybrid control of quadrotor

Hybrid control of quadrotor

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Mediterranean Conference on control and Automation (MED)

作者： Matko Orsag Stjepan Bogdan Department of Control and Computer Engineering Faculty of Electrical Engineering and Computing Zagreb Croatia

This paper presents the solution to a quadrotor control problem based on a discrete automaton that, in combination with classical PID controllers, creates a hybrid control system. Some modifications to the known and widely used mathematical model of quadrotor aircrafts are also discussed in this paper. The paper shows an open loop control concept that flies the aircraft into looping. Finally, the performance of the suggested control scheme is tested with simulations.

关键词： Automatic control control systems Open loop systems Propulsion Mathematical model Aircraft Automata Three-term control Helicopters Equations

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Passive decoy-state quantum key distribution with practical light sources

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Physical Review A 2010年第2期81卷 022310-022310页

作者： Marcos Curty Xiongfeng Ma Bing Qi Tobias Moroder ETSI Telecomunicación Department of Signal Theory and Communications University of Vigo Campus Universitario E-36310 Vigo (Pontevedra) Spain Institute for Quantum Computing & Department of Physics and Astronomy University of Waterloo N2L 3G1 Waterloo Ontario Canada Center for Quantum Information and Quantum Control Department of Physics and Department of Electrical & Computer Engineering University of Toronto M5S 3G4 Toronto Ontario Canada Quantum Information Theory Group Institute of Theoretical Physics I University of Erlangen-Nürnberg D-91058 Erlangen Germany Max Planck Institute for the Science of Light D-91058 Erlangen Germany

Decoy states have been proven to be a very useful method for significantly enhancing the performance of quantum key distribution systems with practical light sources. Although active modulation of the intensity of the laser pulses is an effective way of preparing decoy states in principle, in practice passive preparation might be desirable in some scenarios. Typical passive schemes involve parametric down-conversion. More recently, it has been shown that phase-randomized weak coherent pulses (WCP) can also be used for the same purpose [M. Curty et al., Opt. Lett. 34, 3238 (2009).] This proposal requires only linear optics together with a simple threshold photon detector, which shows the practical feasibility of the method. Most importantly, the resulting secret key rate is comparable to the one delivered by an active decoy-state setup with an infinite number of decoy settings. In this article we extend these results, now showing specifically the analysis for other practical scenarios with different light sources and photodetectors. In particular, we consider sources emitting thermal states, phase-randomized WCP, and strong coherent light in combination with several types of photodetectors, like, for instance, threshold photon detectors, photon number resolving detectors, and classical photodetectors. Our analysis includes as well the effect that detection inefficiencies and noise in the form of dark counts shown by current threshold detectors might have on the final secret key rate. Moreover, we provide estimations on the effects that statistical fluctuations due to a finite data size can have in practical implementations.

关键词： Photodetectors

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Microscopic texture components classification for image segmentation

Microscopic texture components classification for image segm...

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17th European Signal Processing Conference, EUSIPCO 2009

作者： Hoštálková, Eva Procházka, Ales Mudrová, Martina Michalcová, Alena Department of Computing and Control Engineering Institute of Chemical Technology Prague Technicka 5 160 00 Prague 6 Czech Republic Department of Metals and Corrosion Engineering Institute of Chemical Technology Prague Technicka 5 160 00 Prague 6 Czech Republic

The paper presents the possibility of using a sliding window for image feature extraction in order to identify image regions of interest. The study includes the comparison of feature extraction methods both in the space and frequency domains using the discrete Fourier transform and the discrete wavelet transform to achieve reliable classification results for a given application. The compactness of feature clusters is evaluated exploiting a proposed numerical criterion. In case of real image data, the clusters compactness can often be improved by employing a chosen smoothing method on the raw data. In this paper, the procedure of smoothing, feature extraction and classification is applied to microscopic images of aluminum alloys in order to isolate regions of similar properties and to study their relationship. To achieve this goal the sliding window classification results are combined and isolated misclassified subregions repaired. The proportion of misclassified regions is then used for the evaluation of the efficiency of the proposed method along with the proposed measure of cluster compactness. © EURASIP, 2009.

关键词： Discrete wavelet transforms

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Output Regulation for Output Feedback Systems with An Uncertain Exosystem

Output Regulation for Output Feedback Systems with An Uncert...

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Joint 48th IEEE Conference on Decision and control and 28th Chinese control Conference

作者： Dabo Xu Jie Huang Applied Control and Computing Laboratory Department of Mechanical and Automation EngineeringThe Chinese University of Hong Kong

This paper studies the global robust output regulation problem for a class of output feedback systems subject to an uncertain exosystem by using output feedback *** adaptive control technique is used to handle the unknown parameter vector in the *** is shown that this unknown parameter vector can be exactly estimated asymptotically if the controller incorporates a minimal internal *** effectiveness of our approach has been illustrated by an asymptotic tracking problem associated with a generalized fourth-order Lorenz system.

关键词： nonlinear systems nonlinear control output regulation

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