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12th International Conference on e-Learning, ICEL 2017

作者： Dascalu, Maria-Luliana Nitu, Melania Alecu, Gabriel Bodea, Constanta-Nicoleta Moldoveanu, Alin Dragos Bogdan Department of Engineering in Foreign Languages Faculty of Engineering in Foreign Languages University Politehnica of Bucharest Romania Department of Economic Informatics and Cybernetics Faculty of Economic Cybernetics Statistics and Informatics Bucharest University of Economic Studies Romania Computer Science and Engineering Department Faculty of Automatic Control and Computers University Politehnica of Bucharest Romania

ISBN: (纸本)9781911218357

Individual instruction is recognized as an effective learning method which is highly supported by the so-called personalized, intelligent or adaptive systems. The main purpose of this learning method is to offer customized content, experience or tools, based on the learning profile of students (learning style, gender, prior knowledge, learning goals and so on), so as to improve the learning outcomes. There are two wide-known adaption techniques implemented by learning systems to provide individual instruction: adaptability and adaptivity. The first one allows the students to take control, e.g. The learning system provides choices to let the students adapt the steps, sequences, difficulty level, preferences, while the second empowers the system, which is able to build a student model and to provide learning support based on that model. The current paper presents PoliCAT-A learning system based on Computer Adaptive Testing (CAT) principle, which implements the second adaption technique (adaptivity) to provide individual instruction. Furthermore, the proposed web-based application supports the new learning paradigms, e.g. student-centered learning, communities of practice, and constructivism in general and relies on the current technologies-Web 2.0 and social Web, as students are able to share one's results on social media. The system is described as a useful tool for self-regulated learning, answering thus at the question whether assessment may have a strong formative role in learning or not. Besides highlighting the key features of the application, the paper provides experimental results from a web programming course for forth year students enrolled in an engineering degree program, who used the developed system as a learning tool during one semester. Students reported that they succeeded in strengthening their study skills and monitoring their academic progress through the learning analytics features. The available personalized feedback PoliCAT, as well as the possi

关键词： Students

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Wind Turbine Emulation Using Permanent Magnet Synchronous Generator

Wind Turbine Emulation Using Permanent Magnet Synchronous Ge...

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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Ciprian Vlad Adriana Burlibaşa Romeo Păduraru Silviu Epure Cristinel Dache Cristian Victor Lungu Lucian Puiu Georgescu Gabriel Murariu Department of Automatic Control and Electrical Engineering “Dunărea de Jos” University of Galaţi 47 Domneascǎ Galaţi Romania Department of Electronics and Telecommunications Faculty of Automatic control Computers Electrical Engineering and Electronics “Dunărea de Jos” University of Galaţi 47 Domneascǎ Galaţi Romania Department of Physics Chemistry and Environment Faculty of Sciences and Environment “Dunărea de Jos” University of Galaţi 47 Domneascǎ Galaţi Romania

This paper aims to presents the results obtained in electromechanical wind speed emulator of distributed low power system. The results are obtained in insulated regime with a step up/down converter, battery bank and resistive load. All the operating regions are aimed, namely optimization and power limitation one, and also an intermediate operating region is considered in order to ensure smooth transition between these two regions. For control purpose an improved strategy is proposed. Hardware implementation is done under DS1103 controller board running under Matlab and controlDesko ® software. This paper present results from a functional low power wind system, part of a distributed multisource low power system, which offer also the possibility of implementing the behavior and the control of such systems, in grid-connected or disconnected from the national grid. Experimental results show the effectiveness of the proposed system under various conditions.

关键词： Velocity control Wind speed Wind turbines Batteries Optimization Choppers (circuits) Power systems

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Variable gain PI with fractional order for doubly fed induction generator used in a chain of wind power conversion 10

Variable gain PI with fractional order for doubly fed induct...

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10th International Symposium on Advanced Topics in electrical engineering, ATEE 2017

作者： Andriniriniaimalaza, Philibert Fanambinantsoa Andrianantenaina, Tsiory Patrick Razafinjaka, Nirinarison Jean Digital Control Laboratory of Electrical Drive Systems Electrical Engineering Faculty University Politehnica Bucharest Romania Automatic Laboratory Department of Electricity Higher Polytechnic School University of Antsiranana Madagascar

ISBN: (纸本)9781479975143

Currently, variable gain PI (VGPI) controllers are used in several applications. Its structure is built around PI controller tuning and usually an entire number is chosen for the order or degree. This paper deals with a study of a VGPI with fractional order (VGPIFO). For the PI controller tuning, a method called general method (MG) is adopted. Then, the VGPI one is established. The proposed controller is applied on a doubly fed induction generator (DFIG) inserted in a chain of wind power conversion. Simulation results show that this new controller leads to good performances as test tracking, disturbance rejection and robustness with respect to system operation variation and parameters variation. © 2017 IEEE.

关键词： Wind power

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Plenary Lectures

Plenary Lectures

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Mediterranean Conference on control and Automation (MED)

作者： Bart De Moor Yasamin Mostofi Maryam Kamgarpour Zdenko Kovačić Maja Cepanec Airlie Chapmar Mehran Mesbahi Department of Electrical Engineering (ESAT-STADIUS) KU Leuven Leuven Belgium Department of Electrical & Computer Engineering University of of California Santa Barbara CA USA Automatic Control Laboratory Swiss Federal Institute of Technology Zurich Zurich Switzerland University of Zagreb Faculty of Electrical Engineering and Computing University of Zagreb Faculty of Education and Rehabilitation Sciences University of Melbourne Australia University of Washington USA

The following topics are dealt with: control system synthesis; stability; nonlinear control systems; closed loop systems; robust control; feedback; Lyapunov methods; mobile robots; uncertain systems; and position cont... 详细信息

ISBN: (纸本)9781538674994;9781538678909

关键词： Robot sensing systems electrical engineering Education Autism Robot kinematics Decision making

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Implementation of bi-fractional filtering on the Arduino Uno hardware platform 8th

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8th Conference on Non-integer Order Calculus and Its Applications, RRNR 2016

作者： Bauer, Waldemar Kawala-Janik, Aleksandra Department of Automatics and Biomedical Engineering AGH University of Science and Technology Al. Mickiewicza 30 Cracow30-059 Poland Faculty of Electrical Engineering Automatic Control and Informatics Opole University of Technology Proszkowska 76/1 Opole45-758 Poland

ISBN: (纸本)9783319454733

In this paper application of method based on bi-fractional filtering on the Arduino Uno was proposed. The authors showed that the implementation of a non-integer order filter on a micro-controller hardware platform is possible and gives promising results. Another aspect of potential implementation of such systems involves using biomedical data – in particular EEG signals, which were applied during the research carried out for the purpose of this paper. © Springer International Publishing AG 2017.

关键词： Bandpass filters

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Adaptive control for revolute joints robot manipulator with uncertain/unknown dynamic parameters and in presence of disturbance in control input 2017

Adaptive control for revolute joints robot manipulator with ...

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3rd International Conference on Mechatronics and Robotics engineering, ICMRE 2017

作者： Sakha, Masoud Seyed Shaker, Hamid Reza Department of Control Engineering Faculty of Electrical and Computer Engineering University of Tabriz Tabriz Iranc Iran Center for Energy Informatics University of Southern Denmark Odense Denmark

ISBN: (纸本)9781450352802

This paper presents an effective adaptive controller for revolute joints robot manipulator where the control input is accompanied with a random disturbance (with unknown PSD). It is clear that, disturbance can compromise the overall performance of the system. To cope with this problem, a control technique is proposed which uses the concept of exponential practical stability. Unlike other counterparts, the proposed method does not need information such as the physical parameters of robot and gravitational acceleration. The results show that the proposed controller achieves an excellent performance clearly seen from the tracking error and its derivatives. © 2017 Association for Computing Machinery.

关键词： controllers

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Robust coalitional distributed model predictive control algorithm with stability via terminal constraint

Robust coalitional distributed model predictive control algo...

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IEEE Conference on control Technology and Applications

作者： A. Maxim J. M. Maestre C. F. Caruntu C. Lazar Department of Electrical energy Metals Mechanical Constructions and Systems Ghent University Ghent Belgium Department of Systems and Automation Engineering University of Seville Spain Department of Automatic Control and Applied Informatics ‘Gheorghe Asachi’ Technical University of Iasi Iasi Romania

This paper proposes a robust coalitional distributed model predictive control algorithm suitable for input coupled sub-systems. The core idea is based on a distributed iterative implementation with minimum information exchange, in which the coupling information is regarded as bounded additive uncertainty. If the disturbance received from the neighbours is too large for the local optimization problem, then a coalitional strategy is adopted. The closed-loop stability is guaranteed via terminal constraint. The performance of the coalitional strategy is compared with an iterative min-max distributed model predictive controller and a centralized model predictive controller.

关键词： performance coalitional strategy compared

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A comparison of nonsmooth, nonconvex, constrained optimization solvers for the design of time-delay compensators

arXiv

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arXiv 2018年

作者： Kungurtsev, Vyacheslav Mitchell, Tim Vyhlídal, Tomáš Department of Computer Science Faculty of Electrical Engineering Czech Technical University in Prague Max Planck Institute for Dynamics of Complex Technical Systems Magdeburg Germany Department of Instrumentation and Control Engineering Faculty of Mechanical Engineering Czech Institute of Informatics Robotics and Cybernetics Czech Technical University in Prague

We present a detailed set of performance comparisons of two state-of-the-art solvers for the application of designing time-delay compensators, an important problem in the field of robust control. Formulating such robust control mechanics as constrained optimization problems often involves objective and constraint functions that are both nonconvex and nonsmooth, both of which present significant challenges to many solvers and their end-users hoping to obtain good solutions to these problems. In our particular engineering task, the main difficulty in the optimization arises in a nonsmooth and nonconvex stability constraint, which states that the infinite spectrum of zeros of the so-called shaper should remain in the open left half-plane. To perform our evaluation, we make use β-relative minimization profiles, recently introduced visualization tools that are particularly suited for benchmarking solvers on nonsmooth, nonconvex, constrained optimization problems. Furthermore, we also introduce new visualization tools, called Global-Local Profiles, which for a given problem and a fixed computational budget, assess the tradeoffs of distributing the budget over few or many starting points, with the former getting more budget per point and latter less. Copyright © 2018, The Authors. All rights reserved.

关键词： Robust control

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Comparitive study of predictive controllers for trajectory tracking of non-holonomic mobile robot 21

Comparitive study of predictive controllers for trajectory t...

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21st International Conference on Process control, PC 2017

作者： Sharma, K. Rahul Dusek, Frantisek Honc, Daniel Department of Process Control Faculty of Electrical Engineering and Informatics University of Pardubice Nám Čs. legií 565 Pardubice53210 Czech Republic

ISBN: (纸本)9781538640111

The paper deals with predictive control of non-holonomic mobile robot. The basic nonlinear kinematic equation is linearized into two different linear time varying models based on frame of reference-world coordinates and local coordinate of mobile robot. The non-linear model predictive control is applied to the trajectory tracking problem of a non-holonomic mobile robot with these models. The control law is derived from a cost function which penalizes the state tracking error, control effort and terminal state deviation error. Various simulation experiments are conducted and a comparative analysis has been made with respect to state-of-the-art approaches. © 2017 IEEE.

关键词： Mobile robots

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Modelling of ball and plate system based on first principle model and optimal control 21

Modelling of ball and plate system based on first principle ...

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21st International Conference on Process control, PC 2017

作者： Dusek, Frantisek Honc, Daniel Sharma, K. Rahul Department of Process Control Faculty of Electrical Engineering and Informatics University of Pardubice Nám Čs. legií 565 Pardubice53210 Czech Republic

ISBN: (纸本)9781538640111

This paper presents modelling of ball and plate systems based on first principles by considering balance of forces and torques. A non-linear model is derived considering the dynamics of motors, gears, ball and plate. The non-linear model is linearized near the operating region to obtain a standard state space model. This linear model is used for discrete optimal control of the ball and plate system-The trajectory of the ball is controlled by control voltages to the motor. © 2017 IEEE.

关键词： State space methods

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