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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Anderle, Milan Čelikovský, Sergej Czech Technical University in Prague Faculty of Electrical Engineering Department of Control Engineering Technická 2 Prague166 27 Czech Republic Institute of Information Theory and Automation Academy of Sciences of the Czech Republic Pod Vodárenskou věží 4 Prague182 08 Czech Republic

ISBN: (纸本)9783902823625

Underactuated mechanical systems are systems with less actuators than degrees of freedom. Therefore, it is complicated to measure all states, i.e. angular positions or angular velocities, of the mechanical system. Alternative solution consists in an observer design such that unmeasurable states are estimated. For this purpose, a high gain observer for an Acrobot was introduced. By virtue of an Acrobot embedding into a 4-link model, the high gain observer was simply extended and applied to the 4-link model. The main aim of this paper consists in a coupling of a method of the Acrobot embedding into the 4-link model and the high gain observer design for the Acrobot. The coupling results in an observer for the 4-link model with the same structure as the already developed high gain observer for the Acrobot model. The control of the 4-link model using the embedding method is based on a definition of constraining functions for knees control whereas the remaining angle in the hip is controlled in the same way as it would be an Acrobot's angle. The ability of feedback tracking of the walking-like trajectory of the 4-link with observed geometry during a swing phase of a single step is demonstrated in simulations. © IFAC.

关键词： Mechanical actuators

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Design on fuzzy control for a class of stochastic nonlinear systems

Design on fuzzy control for a class of stochastic nonlinear ...

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2014 American control Conference, ACC 2014

作者： Su, Xiaojie Shi, Peng Wu, Ligang Karimi, Hamid Reza College of Automation Chongqing University 400044 Chongqing China School of Electrical and Electronic Engineering University of Adelaide SA 5005 Australia Space Control and Inertial Technology Research Center Harbin Institute of Technology Harbin 150001 China Department of Engineering Faculty of Engineering and Science University of Agder N-4898 Grimstad Norway College of Engineering and Science Victoria University Melbourne VIC 8001 Australia

ISBN: (纸本)9781479932726

The problem of Hankel-norm output feedback control is solved for a class of T-S fuzzy stochastic systems. The dynamic output feedback controller design technique is proposed by employing fuzzy-basis-dependent Lyapunov function approach and the conversion on the Hankel-norm controller parameters. Sufficient conditions are established to design the controllers such that the resulting closed-loop system is stochastically stable and satisfies a prescribed performance. The desired output feedback controller can be obtained by solving a convex optimization problem, which can be efficiently solved by standard numerical algorithms. © 2014 American Automatic control Council.

关键词： Stochastic systems

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Implementation of wearable sensors for fall detection into smart household

Implementation of wearable sensors for fall detection into s...

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12th IEEE International Symposium on Applied Machine Intelligence and Informatics, SAMI 2014

作者： Biroš, Ondrej Karchňák, Ján Šimšík, Dušan Hošovský, Alexander Technical University of Košice Mechanical Engineering Faculty Department of Automation Control and Human-machine Interactions Košice Slovakia Technical University of Košice Faculty of Manufacturing Technologies with A Seat in Prešov Department of Mathematics Informatics and Cybernetics Prešov Slovakia

ISBN: (纸本)9781479934423

The proposed paper describes implementation of wearable sensors into smart household environment. Wearable sensor prototype is based on MEMS inertial measurement unit, containing accelerometer and gyroscope. Fall detection using wearable sensors has been determined as suitable function in several implementations. Fall detection algorithm, considering information about acceleration, tilt and angular velocity was developed and tested. Communication of IMU with PC is described as well as experimental verification of the algorithm. © 2014 IEEE.

关键词： Sensors

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Theoretical Modeling and Experimental Analysis of Drying Process in Electromagnetic Field

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World Journal of engineering and Technology 2014年第1期2卷 41-53页

作者： Arif Memmedov Teymuraz Abbasov Mustafa Seker Department of Electric-Electronic Engineering Faculty of EngineeringUniversity of InonuMalatyaTurkey Department of Control and Automation Divrigi Nuri Demirag Vocationally High SchoolUniversity of CumhuriyetSivasTurkey

The effects of electromagnetic waves in drying processes of solid materials are investigated theoretically and experimentally. Modified model of mass transfer being constituted by the effect of electromagnetic waves which have different frequency has been obtained. Modeling of the drying process with a two-port electric circuit for the determination of diffusion coefficients is designed. The frequency limits of electromagnetic wave which will be able to hasten the drying process are determined. The effects of the electromagnetic wave in the potato slice drying process by the influence of different frequencies and temperatures are experimentally examined. The results obtained are compared with theoretical calculations. Moisture concentration curves in drying process have been commented by drawing. Theoretical and experimental results which have been obtained are identified as a well adaptation.

关键词： Drying Heat and Mass Transfer Electromagnetic Wave Frequency Diffusion

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Optical coherence tomography for fingerprint acquisition from internal layer - A case study

Optical coherence tomography for fingerprint acquisition fro...

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Signal Processing Algorithms, Architectures, Arrangements and Applications (SPA)

作者： Przemysław Korohoda Adam Dąbrowski Paweł Pawłowski Faculty of Computer Science Electronics and Telecommunications Kraków POLAND Faculty of Computing Chair of Control and System Engineering Poznan POLAND

In this paper a problem of fingerprint-based biometric technique for the use in cases when the fingertips surface has been seriously damaged, making it impossible or extremely difficult to form a conventional reference pattern, is addressed. The optical coherence tomography (OCT) is considered as a method to acquire data enabling later reconstruction of the fingerprint pattern from the internal (mother) layer. A set of two procedures: the first converting the 3-dimensional data resulting from the OCT to the 2-dimensional raw fingerprint image and the second adapting this image to input data for simple, standard fingerprint recognition algorithms, are described. Both procedures make up a complete preprocessing tool. The data set consisted of 149 B-scans forming a 3-dimensional structure describing the surface and shallow internal layer of a part of a fingertip of a person with considerably damaged fingertip surface, making the recognition of the fingerprint with direct method impossible. The obtained results prove that the OCT technique can be efficiently used to solve the considered problem, and that the proposed algorithms form a tool that can be useful for larger databases.

关键词： Optical imaging Biomedical optical imaging Image recognition Lead Optical sensors Coherence

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From Linear to Nonlinear Model Predictive control of a Building

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IFAC Proceedings Volumes 2014年第3期47卷 587-592页

作者： Matej Pčolka Eva Žáčeková Rush Robinett Sergej Čelikovský Michael Sebek Department of Control Engineering Faculty of Electrical Engineering of Czech Technical University in Prague Czech Republic Mechanical Engineering-Engineering Mechanics Michigan Technological University United States Institute of Information Theory and Automation Academy of Sciences of the Czech Republic Czech Republic

In the building climate control area, the linear model predictive control (LMPC)—nowadays considered a mature technique—benefits from the fact that the resulting optimization task is convex (thus easily and quickly solvable). On the other hand, while nonlinear model predictive control (NMPC) using a more detailed nonlinear model of a building takes advantage of its more accurate predictions and the fact that it attacks the optimization task more directly, it requires more involved ways of solving the non-convex optimization problem. In this paper, the gap between LMPC and NMPC is bridged by introducing several variants of linear time-varying model predictive controller (LTVMPC). Making use of linear time-varying model of the controlled building, LTVMPC obtains predictions which are closer to reality than those of linear time invariant model while still keeping the optimization task convex and less computationally demanding than in the case of NMPC. The concept of LTVMPC is verified on a set of numerical experiments performed using a high fidelity model created in a building simulation environment and compared to the previously mentioned alternatives (LMPC and NMPC) looking at both the control performance and the computational requirements.

关键词： Predictive control adaptive control recursive identification

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Economical nonlinear model predictive control for building climate control

Economical nonlinear model predictive control for building c...

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2014 American control Conference, ACC 2014

作者： Pcolka, Matej Žáčeková, Eva Robinett, Rush Čelikovsky, Sergej Šebek, Michael Department of Control Engineering Faculty of Electrical Engineering Czech Technical University in Prague Technická 2 166 27 Praha 6 Czech Republic Department of Mechanical Engineering-Engineering Mechanics Michigan Technological University 1400 Townsend Drive Houghton MI United States Institute of Information Theory and Automation Academy of Sciences of the Czech Republic Pod Vodárenskou věží 4 182 08 Praha 8 Czech Republic

ISBN: (纸本)9781479932726

In this paper, two alternatives approaches to model predictive control (MPC) are compared and contrasted for the role of zone temperature controller - the commonly used linear formulation (LMPC) and rather unconventional nonlinear formulation (NMPC). The economical focus is reflected by the performance criterion being a combination of the comfort requirements and the monetary cost penalties (price of the consumed hot water and the electricity needed to deliver the water to the building) of the controlled inputs. With this formulation, the optimal controller drives toward minimization of the real price rather than minimization of abstract quantities. It turns out that the NMPC is able to attack the cost minimization directly while retaining a compact optimization formulation as opposed to the suboptimal linear alternative. A considerable part of the superiority of the NMPC can be owed also to the use of a nonlinear model that captures the nonlinear building dynamics much more accurately than the linear models. Thanks to an enhanced search step choice introduced in this paper, the NMPC outperforms both the LMPC and the conventional controller significantly even under severe computational restrictions which demonstrates its strong practical applicability. © 2014 American Automatic control Council.

关键词： Nonlinear systems

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Mechanism and kinetic studies on the synthesis of glyceraldehyde via anodic oxidation of glycerol 21

Mechanism and kinetic studies on the synthesis of glyceralde...

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21st International Congress of Chemical and Process engineering, CHISA 2014 and 17th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2014

作者： Beltrán-Prieto, J.C. Slavik, R. Kolomazík, K. Pecha, J. Tomas Bata University in Zlin Department of Automation and Control Engineering Faculty of Applied Informatics Nam. T. G. Masaryka 5555 Zlin760 01 Czech Republic Tomas Bata University in Zlin Department of Environmental Engineering Protection Faculty of Technology Nam. T. G. Masaryka 275 Zlin762 72 Czech Republic

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Multiple neural networks switched prediction for landslide displacement

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engineering Geology 2014年 186卷 91-99页

作者： Lian, Cheng Zeng, Zhigang Yao, Wei Tang, Huiming School of Automation Huazhong University of Science and Technology Wuhan 430074 China Key Laboratory of Image Processing and Intelligent Control of Education Ministry of China Wuhan 430074 China School of Computer Science South-Central University for Nationalities Wuhan 430074 China Faculty of Engineering China University of Geosciences Wuhan 430074 China

An accurate prediction of landslide displacement is challenging and of great interest to governments and researchers. In order to reduce the risk of selecting the types of influencing factors and artificial neural networks (ANNs), a multiple ANNs switched prediction method is proposed for landslide displacement forecasting. In the first stage, a set of individual neural networks are developed based on different environmental factors and/or different training algorithms. In the second stage, a switched prediction method is used to select the appropriate individual neural network for prediction purpose. For verification and testing, three typical landslides in Three Gorges Reservoir, namely Baishuihe landslide, Bazimen landslide and Shiliushubao landslide, are presented to test the effectiveness of our method. Application results demonstrate that the proposed method can significantly improve model generalization and perform similarly to, or better than, the best individual ANN predictor. © 2014 Elsevier B.V.

关键词： Forecasting

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A novel current link distributed MPPT PV system - Overall system prototyping and evaluation

A novel current link distributed MPPT PV system - Overall sy...

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International Power Electronics Conference (IPEC)

作者： Mikihiko Toru Akira Xiang-Dong Sun Byung-Gyu Yu Faculty of Engineering Tokyo Polytechnic University Kanagawa Japan 243-0297 Faculty of Automation and Information Engineering Xi'an University of Technology Shaanxi China Division of Electrical Electronics and Control Engineering Kongju National University Chungnam Korea

ISBN: (纸本)9781479927067

A novel structure for power maximization of the PV (photovoltaic) system under partially condition is presented. By using CSI (Current Source Inverter) instead of VSI (Voltage Source Inverter), the structure of PV system becomes extremely both more simple and reliable than conventional one. It means that MICs (Module Integrated Converters) can be consisted of buck-only converters and electrolytic capacitors can be removed from the inverter. The experimental results confirmed that the total output power captured the sum of each maximum value of PV under shading conditions.

关键词： Microwave integrated circuits Pulse width modulation Reliability Clocks Generators Oscillators

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