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International Conference on Unmanned Aircraft Systems

作者： A. Brezoescu P. Castillo R. Lozano Heudiasyc Laboratory UMR7253 University of Technology of Compiegne 60200 Compiegne France French-Mexican Laboratory of Informatics and Automatic Control (LAFMIA) UMI 3175 Cinvestav Mexico D. F. Mexico

ISBN: (纸本)9781479908158

This paper explores the flight of small fixed-wing Unmanned Aerial Vehicle (UAV) in a non-steady environment. The vulnerability of light airplanes to wind is analyzed and the effect of such perturbations on airplane performance is incorporated in the equations of motion. A straightforward wind computation approach, which relies on the difference between the predicted motion of the aircraft and the real motion measured by sensors, is presented in order to be used for a path following application. The analysis takes into account the effect of the noise in sensors measurements and in estimates of orientation and airspeed components. One approach to reducing noise in wind estimates is proposed based on on-line adaptation techniques. Parameter estimation with minimum-order design is obtained using tuning functions. Simulations are carried out representing real flight scenarios in which the wind field is not constant and the sensor measurements are imperfect.

关键词： Wind estimation airplane

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From microscopy data to in silico environments for in vivo-oriented simulations

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EURASIP JOURNAL ON BIOinformatics AND SYSTEMS BIOLOGY 2012年第1期2012卷 1-11页

作者： Hiroi, Noriko Klann, Michael Iba, Keisuke Ciechomski, Pablo de Heras Yamashita, Shuji Tabira, Akito Okuhara, Takahiro Kubojima, Takeshi Okada, Yasunori Oka, Kotaro Mange, Robin Unger, Michael Funahashi, Akira Koeppl, Heinz 1.Department of BioSciences and Informatics Keio University Yokohama Kanagawa Japan 2.Automatic Control Laboratory Swiss Federal Institute of Technology Zurich Switzerland 3.ScienceVisuals Sarl Lausanne Switzerland 4.Department of PathologySchool of Medicine Keio University Tokyo Shinjuku-ku Japan

In our previous study, we introduced a combination methodology of Fluorescence Correlation Spectroscopy (FCS) and Transmission Electron Microscopy (TEM), which is powerful to investigate the effect of intracellular environment to biochemical reaction processes. Now, we developed a reconstruction method of realistic simulation spaces based on our TEM images. Interactive raytracing visualization of this space allows the perception of the overall 3D structure, which is not directly accessible from 2D TEM images. Simulation results show that the diffusion in such generated structures strongly depends on image post-processing. Frayed structures corresponding to noisy images hinder the diffusion much stronger than smooth surfaces from denoised images. This means that the correct identification of noise or structure is significant to reconstruct appropriate reaction environment in silico in order to estimate realistic behaviors of reactants in vivo. Static structures lead to anomalous diffusion due to the partial confinement. In contrast, mobile crowding agents do not lead to anomalous diffusion at moderate crowding levels. By varying the mobility of these non-reactive obstacles (NRO), we estimated the relationship between NRO diffusion coefficient (D-nro) and the anomaly in the tracer diffusion (alpha). For D-nro = 21.96 to 44.49 mu m(2)/s, the simulation results match the anomaly obtained from FCS measurements. This range of the diffusion coefficient from simulations is compatible with the range of the diffusion coefficient of structural proteins in the cytoplasm. In addition, we investigated the relationship between the radius of NRO and anomalous diffusion coefficient of tracers by the comparison between different simulations. The radius of NRO has to be 58nm when the polymer moves with the same diffusion speed as a reactant, which is close to the radius of functional protein complexes in a cell.

关键词： Diffusion

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Improved EASI ECG model obtained using various machine learning and regression techniques

Improved EASI ECG model obtained using various machine learn...

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International Conference on Telecommunications and Signal Processing (TSP)

作者： Wojciech Oleksy Ewaryst Tkacz Zbigniew Budzianowski Institute of Informatics Faculty of Automatic Control Electronics and Computer Science Silesian University of Technology in Gliwice Poland Institute of Electronics Faculty of Automatic Control Electronics and Computer Science Silesian University of Technology in Gliwice Poland

Main idea of this study was to increase efficiency of the EASI ECG method introduced by Dover in 1988 using various regression techniques. EASI was proven to have high correlation with standard 12 lead ECG. Apart from that it is less susceptible to artefacts, increase mobility of patients and is easier to use because of smaller number of electrodes. Multilayer Perceptron (Artificial Neural Network), Support Vector Machines, Linear Regression, Pace Regression and Least Median of Squares Regression methods were used to improve the quality of the 12-lead electrocardiogram derived from four (EASI) electrodes.

关键词： Electrocardiography Support vector machines Electrodes Standards Kernel Machine learning Multilayer perceptrons

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Voltage quality improvement in islanded microgrids supplying nonlinear loads

Voltage quality improvement in islanded microgrids supplying...

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2012 3rd Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2012

作者： Dehghani, Mohammad T. Vahedi, Abolfazl Savaghebi, Mehdi Guerrero, Josep M. Department of Power Engineering Saveh Branch Islamic Azad University Saveh Iran Center of Excellence for Power System Automation and Operation Iran University of Science and Technology Iran Department of Electronics Engineering Karaj Branch Islamic Azad University Karaj Iran Department of Automatic Control and Industrial Informatics Technical University of Catalonia Spain Institute of Energy Technology Aalborg University Denmark

ISBN: (纸本)9781467301114

The aim of this paper is to improve voltage quality at the terminals of distributed generators (DGs) in an islanded microgrid. To achieve this goal, it is proposed to include separate voltage and current control loops for the fundamental and harmonics frequencies. This way, it is not necessary to consider additional controllers to provide voltage harmonic compensation. The proposed control system can be implemented in a very simple way. The control structure of every single DG unit consists of active and reactive power droop controllers and voltage and current control loops. Simulation results are provided in order to show the effectiveness of the proposed control approach. © 2012 IEEE.

关键词： Harmonic analysis

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Distributed, mobile, social system for road surface defects detection

Distributed, mobile, social system for road surface defects ...

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5th International Symposium on Computational Intelligence and Intelligent informatics, ISCIII 2011

作者： Aksamit, Pawel Szmechta, Marek Faculty of Electrical Engineering Automatic Control and Informatics Opole University of Technology Opole Poland

ISBN: (纸本)9781457718601

In paper a system for road surface defects detection is presented. Traditional approaches use human eye or specialized hardware to evaluate quality of the road. There are also systems known basing on mobile sensors network. Our approach bases on collecting GPS and accelerometer data from mobile phones of large number of individual, anonymous car drivers. The method of evaluating quality of the roads is described as well as the results of its verification. © 2011 IEEE.

关键词： Accelerometers

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Modeling packet delay distributions in an industrial telemetry system

Modeling packet delay distributions in an industrial telemet...

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5th International Symposium on Computational Intelligence and Intelligent informatics, ISCIII 2011

作者： Szmechta, Marek Aksamit, Pawel Faculty of Electrical Engineering Automatic Control and Informatics Opole University of Technology Opole Poland

ISBN: (纸本)9781457718601

This paper presents some observations of data packet delaying in a real productive industrial telemetry system. It introduces the statistical analysis of measured Round Trip Time (RTT) values of used Internet control Management Protocol (ICMP) and User Datagram Protocol (UDP) packets usually used in such applications. Scheduled ICMP delay measurements are simple to implement, while the UDP packets delay measurements need making modifications in the industrial transmission protocol implementation used in the whole telemetry system. A comparison between these two cases has been carried out. The delay measurements were carried out in all possible scenarios between each significant nodes of the distributed telemetry system. The proposed research topic is a part of a realized global distributed wind turbine monitoring system project. A comparison between obtained and required quality of service of General Packet Radio Service (GPRS) packet data transmission in these industrial applications was carried out. The paper introduces a simple method of evaluation of the theoretical probability density functions in form of histograms in all investigated scenarios. These models can give some interesting results to make the data transmission in the distributed telemetry system more effective and "intelligent". © 2011 IEEE.

关键词： Telemetering equipment

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Electrostatic properties of aged fullerene-doped mineral oil

Electrostatic properties of aged fullerene-doped mineral oil

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作者： Aksamit, P. Zmarzly, D. Boczar, T. Opole University of Technology Faculty of Electrical Engineering Automatic Control and Informatics ul. Prószkowska 76 45-758 Opole Poland

In this paper the analysis of the influence of C60 fullerenes on flow electrification of mineral insulating oil during aging is presented. Three sets of samples, one fresh and two aged for 24 h and 96 h were tested for their electrification properties using an improved version of a spinning disk system. The relations between C60 concentration and electrification current were determined for different rotational velocities. It is shown, that C 60 may significantly reduce or increase the electrification current in mineral oil, depending on fullerenes concentration. The possible causes of observed behavior are analyzed. © 2011 IEEE.

关键词： Power transformers

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Fuzzy watershed algorithm: An enhanced algorithm for 2D gel electrophoresis image segmentation

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International Journal of Computer Science Issues 2012年第2 2-3期9卷 561-577页

作者： Rashwan, Shaheera Sarhan, Amany Faheem, Muhamed Talaat Youssef, Bayumy.A. Informatics Research Institute City for Science and Technology Borg ElArab Alexandria Egypt Computer science and Automatic Control Engineering Department Faculty of Engineeing University of Tanta Tanta Egypt EE dept-Faculty of Engineering Taif University Saudi Arabia

An important issue in the analysis of two-dimensional electrophoresis images is the detection and quantification of protein spots. The main challenges in the segmentation of 2DGE images are to separate overlapping protein spots correctly and to find the abundance of weak protein spots. To enable comparison of protein patterns between different samples, it is necessary to match the patterns so that homologous spots are identified. In this paper, we describe a new robust technique to segment and model the different spots present in the gels. The Watershed segmentation algorithm is modified to handle the problem of over segmentation by initially partitioning the image to mosaic regions using the composition of fuzzy relations. The experimental results showed the effectiveness of the proposed algorithm to overcome the over segmentation problem associated with the available algorithm. We also use a wavelet denoising function to enhance the quality of the segmented image. The parameters of the wavelet function are obtained using the Genetic Algorithm search technique. The results of using the denoising function before the proposed Fuzzy Watershed segmentation algorithm is very promising as they are better than those without denoising. © 2012 International Journal of Computer Science Issues.

关键词： Image segmentation

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Intelligent diagnostics of devices with the use of infrared mapping images

Intelligent diagnostics of devices with the use of infrared ...

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2011 3rd International Students Conference on Electrodynamics and Mechatronics, SCE III

作者： Gasz, R. Faculty of Electrical Engineering Automatic Control and Computer Science Opole University of Technology 45-272 Opole Poland

ISBN: (纸本)9781424496952

A correct diagnostics together with the early prediction of failure or malfunction of the system are the major issues in modern maintenance. Nowadays, the time-honored diagnostics may be inadequate and lead to omitting failures, resulting in higher costs of repairing damaged equipment. That is why the interest in intelligent diagnostics increases due to the possibility of better interpretation of the component status and early failure prediction. One of the ways of determining the device condition is to measure and analyze the temperature of multiple points on the device. Thermographics may show a beginning of significant wear of a component, and enable a repair or replacing before the failure appears. The paper presents the key aspects of the diagnostics with thermal images, including: technology mapping, mapping algorithms, together with a presentation of available software solutions. © 2011 IEEE.

关键词： Repair

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Thermal analysis of three-phase induction motor using circuit models

Thermal analysis of three-phase induction motor using circui...

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2011 3rd International Students Conference on Electrodynamics and Mechatronics, SCE III

作者： Mynarek, P. Kowol, M. Opole University of Technology Department of Electrical Engineering Automatic Control and Computer Science 45-036 Opole Poland

ISBN: (纸本)9781424496952

The article presents thermal analysis of three-phase induction motor using coupled circuit models. The MATLAB/SIMULINK environment and PLECS toolbox were used to create mathematical model of the examined motor. Coefficient of heat transfer through the winding was set experimentally. Results of calculations presented are verified by the measurements on the physical motor. © 2011 IEEE.

关键词： MATLAB

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