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25th International Workshop on Concurrency, Specification and Programming, CS and P 2016

作者： Grochowalski, Piotr Pancerz, Krzysztof Szul, Tomasz Department of Computer Science Faculty of Mathematics and Natural Sciences University of Rzeszów Prof. S. Pigonia Str. 1 Rzeszów35-310 Poland Department of Power Engineering and Automation of Agricultural Processes Faculty of Production and Power Engineering University of Agriculture in Krakow Poland Balicka Str. 116B Kraków30-149 Poland

The main goal of our research is to build the ontology of places in Poland covering a variety of aspects of places, mainly administrative and socio-economic. The ontology is being implemented using the OWL 2 Web Ontology Language. In the created OWL ontology, we can distinguish two kinds of classes, primary classes exactly defined in the ontology as well as secondary classes defined over the ontology on the basis of primary classes and properties of individuals considered in the ontology. We show how to use rough sets to approximate secondary classes by means of primary classes in the created ontology. Rough set approximations enable us to extract some useful knowledge about places.

关键词： Ontology

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A Prediction Method Based on Stepwise Regression Analysis for Train Axle Temperature

A Prediction Method Based on Stepwise Regression Analysis fo...

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International Conference on Computational Intelligence and Security

作者： Weigang Ma Siyu Tan Xinhong Hei Jinwei Zhao Guo Xie Faculty of Computer Science and Engineering Xi'an University of Technology Xi'an P.R. China Faculty of Automation and Information Engineering Xi'an University of Technology Xi'an P.R. China

ISBN: (纸本)9781509048410

The axle temperature of the high speed train is the most direct reflection of the train operating conditions while it is also affected by many factors. The factors which significantly affect the axle temperature are screened out by using the stepwise regression analysis and the prediction equation of the axle temperature is established, so as to compare the predicted data and the measured data. The validity of the coefficients in the equation is verified through R-squared, F test and T test. The experiment shows that R-squared is between 0.81 and 0.93, indicating a high degree of fitting prediction equations, and F test results show that the overall equation is significantly better. The results of T test indicate that the velocity, the carrying capability and the ambient temperature have significant influence on the change of axle temperature. But the traction and the power of traction have less effect. The result shows that this method can reflects the variation trend of axle temperature, which can provide support to the operation and maintenance of axle.

关键词： Axles Mathematical model Temperature measurement Temperature distribution Temperature sensors Correlation coefficient

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Certainty-equivalence based super-twisting control using continuous adaptation laws

Certainty-equivalence based super-twisting control using con...

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International Workshop on Variable Structure Systems, VSS

作者： Alexander Barth Markus Reichhartinger Johann Reger Martin Horn Kai Wulff Computer Science and Automation Dept Technische Universität Ilmenau Germany Faculty of Electrical and Information Engineering Graz University of Technology Graz Austria

The certainty-equivalence super-twisting controller (CESTA) combines approaches from variable structure and adaptive control. In this paper, an improved variant of this algorithm is presented that resorts to a recently introduced Lyapunov function for the super twisting algorithm, establishing a novel continuous adaptation law. These controllers are beneficial for systems that are affected by structured and unstructured uncertainties. It is demonstrated that the combination of sliding-mode and adaptive control methodologies allows to relax the boundedness condition, known from the super twisting algorithm. In comparison to earlier work, asymptotic stability of the system states may be shown while requiring relaxed conditions on the structured uncertainty. The effectiveness of the proposed algorithm is shown with a simulation example.

关键词： Uncertainty Lyapunov methods Asymptotic stability Adaptation models Trajectory Adaptive control Algorithm design and analysis

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Corrigendum: Dielectric cross-shaped-resonator-based metasurface for vortex beam generation at mid-IR and THz wavelengths (Nanophotonics (2019) 8:7 (1263–1270) DOI: 10.1515/nanoph-2019-0112)

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Nanophotonics 2019年

作者： Dharmavarapu, Raghu Izumi, Ken-ichi Katayama, Ikufumi Ng, Soon Hock Vongsvivut, Jitraporn Tobin, Mark J. Kuchmizhak, Aleksandr Nishijima, Yoshiaki Bhattacharya, Shanti Juodkazis, Saulius Centre for NEMS and Nanophotonics (CNNP) Department of Electrical Engineering Indian Institute of Technology Madras Chennai 600036 India Centre for Micro-Photonics Faculty of Science Engineering and Technology Swinburne University of Technology Hawthorn VIC 3122 Australia Melbourne Centre for Nanofabrication ANFF 151 Wellington Road Clayton VIC 3168 Australia Physics Department Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan Infrared Microspectroscopy Beamline Australian Synchrotron Clayton VIC 3168 Australia Institute of Automation and Control Processes Far Eastern Branch Russian Academy of Sciences Vladivostok 690041 Russia Far Eastern Federal University Vladivostok 690090 Russia Department of Electrical and Computer Engineering Graduate School of Engineering Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan Institute of Advanced Sciences Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan Tokyo Tech World Research Hub Initiative (WRHI) School of Materials and Chemical Technology Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8550 Japan

There was a mistake in the grant number used in the recently published paper (DOI: https://***/10.1515/ nanoph-2019-0112. Published Online: 2019-07-09). The text should read: A.K. is grateful for support via the Russian Science Foundation (grant no. 17-19-01325), and R.D. thanks the IIT Madras-Swinburne joint PhD program. © 2019 De Gruyter. All rights reserved.

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Impact of distributed generation upon Reghin - Ləpuşna Medium Voltage line

Impact of distributed generation upon Reghin - Ləpuşna Med...

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2014 International Symposium on Fundamentals of Electrical engineering, ISFEE 2014

作者： Duləu, Lucian Ioan Abrudean, Mihail Bicə, Dorin Department of Automation Faculty of Automation and Computer Science Technical University of Cluj-Napoca Romania Department of Electrical and Computer Engineering Faculty of Engineering Petru Maior University of Tîrgu-Mureş Romania

ISBN: (纸本)9781479968213

The transition between the power market competition and these emerging renewable power system alternatives (wind turbines, solar plants, micro-turbine), has awaken a great deal of interest for distributed power generation. Distributed Generation comprise in low power generators (typically lower than 50 MW), installed within the area of the main power consumption to ensure the growth of the existent distribution network and to satisfy the consumer's needs. © 2014 IEEE.

关键词： Distributed power generation

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Artificial neural network modeling to predict hot deformation behavior of Zn-Al alloy 145

Artificial neural network modeling to predict hot deformatio...

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145th Annual Meeting and Exhibition, TMS 2016

作者： Liu, Yingli Yin, Jiancheng Jiang, Ying Zhong, Yi Computer Technology Application Key Lab. of Yunnan Province Kunming University of Science and Technology 727 Jingming South Road Area Chenggong Kunming Yunnan650500 China Faculty of Information Engineering and Automation Kunming University of Science and Technology 727 Jingming South Road Area Chenggong Kunming Yunnan650500 China Faculty of Materials Science and Engineering Kunming University of Science and Technology 68 Wenchang Road 121 Street Kunming Yunnan650500 China

ISBN: (纸本)9781119225836

Hot compression of the ZnCu2A110 alloy was conducted on a Gleeble-3800D thermomechanical simulator in the temperature range of 150-330°C and strain rate of 0.01-10 s-1. Base on the experimental results, An Artificial Neural Network (ANN) with double bidden layers composing of 10 neurons and 15 neurons were employed to simulate the flow behavior. The inputs of the model are temperature, strain and strain rate. The output of the model is the flow stress. As a result, the minimum relative error is 0.01%, the maximum relative error is 2.25%, and error majority concentrate within 0.81%, Mean Absolute Percentage Error (MAPE) is 0.0101, error is very small. The results indicate that the trained ANN model is a robust tool to predict the high temperature flow behavior of ZnCu2A110 alloy.

关键词： Neural networks

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Model predictive control of five-level H-bridge neutral-point-clamped qZS inverter

Model predictive control of five-level H-bridge neutral-poin...

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Annual Conference of Industrial Electronics Society

作者： Sertac Bayhan Panagiotis Kakosimos Haitham Abu-Rub Jose Rodriguez Department of Electrical and Computer Engineering Texas A&M University at Qatar Doha Qatar Department of Electronics and Automation Gazi University Ankara Turkey The Faculty of Engineering Universidad Andres Bello Santiago Chile

This paper presents a model predictive control (MPC) of five-level H-bridge neutral-point-clamped (NPC) quasi-impedance source inverter (qZSI). The proposed control technique is designed to handle three control objectives with simple and effective approach. The output current, the input current and the capacitor voltage are the control objectives of the proposed MPC algorithm. To fulfill these control objectives, multi-objective based cost function is employed. Furthermore, qZSI has been combined with the 5-Level H-bridge NPC inverter so as to obtain power converter topology with buck/boost and dc/ac conversion functionality in a single stage for high power PV applications. Simulation results verify the proposed multi-objective MPC algorithm and inverter topology.

关键词： Inverters Capacitors Topology Inductors Mathematical model Network topology Cost function

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An E-Commerce Recommender System Based on Click and Purchase Data to Items and Considered of Interest Shifting of Customers

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China Communications 2015年第S2期12卷 72-82页

作者： Duo Lin Wu Zhaoxia XU Shenggang School of Computer and Communication Engineering University of Science and Technology Beijing Faculty of Information Engineering and Automation Kunming University of Science and Technology School of Applied Mathematics Xinjiang University of Finance and Economics

A well-performed recommender system for an e-commerce web site can help customers easily find favorite items and then increase the turnover of merchants, hence it is important for both customers and merchants. In most of the existing recommender systems, only the purchase information is utilized data and the navigational and behavioral data are seldom concerned. In this paper, we design a novel recommender system for comprehensive online shopping sites. In the proposed recommender system, the navigational and behavioral data, such as access, click, read, and purchase information of a customer, are utilized to calculate the preference degree to each item; then items with larger preference degrees are recommended to the customer. The proposed method has several innovations and two of them are more remarkable: one is that nonexpendable items are distinguished from expendable ones and handled by a different way; another is that the interest shifting of customers are considered. Lastly, we structure an example to show the operation procedure and the performance of the proposed recommender system. The results show that the proposed recommender method with considering interest shifting is superior to Kim et al(2011) method and the method without considering interest shifting.

关键词： recommender system online shopping e-commerce preference degree

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Delay Systems with Meromorphic Functions Design

Delay Systems with Meromorphic Functions Design

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IEEE International Conference on Control and automation

作者： Roman Prokop Jiri Korbel Libor Pekar Department of Mathematics Tomas Bata University in Zlin Faculty of Applied Informatics Department of Computer and Communication Systems Tomas Bata University in Zlin Faculty of Applied Informatics Department of Automation and Control Engineering Tomas Bata University in Zlin Faculty of Applied Informatics

ISBN: (纸本)9781509017393

The paper is focused on systems with delay terms at the left (and the right) side of differential equations. Analysis and synthesis of delay systems can be conveniently studied through a special ring of RQ-meromorphic functions. The control methodology is based on a solution of Diophantine equations in this ring. Final controllers result in the Smith predictor like structure. Controller parameters are tuned through a pole-placement problem as a desired multiple root of the characteristic closed loop equation. The methodology is illustrated by a stable second order transfer function with a dead-time term. Then the paper brings an autotuning method as a combination of biased-relay feedback estimation and the proposed algebraic control design. The developed approach is illustrated by examples in the Matlab and Simulink environment.

关键词： Delay systems Rings Diophantine equation Autotuning Relay experiment

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Application of proper orthogonal decomposition and radial basis functions for crack size estimation using particle swarm optimization

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Journal of Physics: Conference Series 2017年第1期842卷

作者： B Benaissa M Köppen M Abdel Wahab S Khatir LEMI Department of Mechanical Engineering University M'hamed Bougara of Boumerdes. Algeria. Faculty of Computer Science and Systems Engineering Department of Creative Informatics Kyushu Institute of Technology. Japan. Department of Electrical Energy Systems and Automation Faculty of Engineering and Architecture Ghent University. Belgium.

Complex engineering problems require simulations, which are computationally expensive in cases of inverse identification tasks since they commonly requires hundreds of thousands of simulations. This paper propose a method based on model reduction for crack size estimation, combining the proper orthogonal decomposition method with radial basis functions. The reduced model is validated by comparing the obtained boundary displacements with the corresponding results from a finite element model. This inverse procedure is formulated as the minimization of the difference between the measured and computed values of displacement at selected boundary nodes, called sensor points, using particle swarm optimization algorithm. Convex and a non-convex specimens have been considered for investigations of crack presence, and identification of its size, different crack sizes have been tested to demonstrate the efficiency of the proposed approach.

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