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3rd IFAC Workshop on Automatic Systems for Building the Infrastructure in Developing Countries, DECOM-TT 2003

作者： Dimirovski, Georgi M. Jing, Yuan-Wei Zhao, Jun Zhang, Si-Ying Dogus University Department of Computer Engineering Faculty of Engineering Acibadem Kadiköy IstanbulTR-34722 Turkey SS Cyril and Methodius University Institute of Automation and Systems Eng Faculty of Electrical Engineering SkopjeMK-1000 Macedonia Northeastern University Institute of Control Science School of Information Science and Eng. Shenyang Liaoning China

A control systems engineering approach, employing a two-level overall system architecture and different but compatible formalisms for system representation on the upper and lower levels, has been investigated in detail. One design alternative is based on employing fuzzy-system approximators and solving for the adaptive tracking of the given, arbitrary, desired system outputs. The other alternative is based on state equations of composite systems and the use of neural-network approximators to deal with uncertainties and control adaptation. In both alternatives similarity property of subsystems has been exploited. Both designs can be implemented within the standard computer process control technology, and are therefore believed to be promising in applied systems engineering. Copyright © 2003 IFAC.

关键词： Fuzzy systems

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Three-dimensional non-holonomic integrator control design applied to induction motors

Three-dimensional non-holonomic integrator control design ap...

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Chinese control and Decision Conference, CCDC

作者： Boja Grčar Peter Cafuta Gorazd Štumberger Anton Hofer Faculty of Electrical Engineering and Computer Science University of Maribor Maribor Slovenia TU Graz Institute for Control and Automation Austria

In the contribution new results in a control design of a general three-dimensional non-holonomic integrator (NHI) including drift terms is proposed. Beside global asymptotic stability (GAS) proposed non-linear controller assure also minimal input norm during transients and in steady states and high dynamic in output response for a piecewise constant reference input. Due to appropriate input modulation internal states follow natural periodic orbits necessary to fulfill non-holonomic constraints. Introducing a non-linear transformation that describe error dynamics feedback stability is proven by using Lyapunov argumentation. Practical value of the proposed design is illustrated on the example of induction machine torque control along with a simulation and experimental results.

关键词： Torque Rotors Steady-state Stators Inductance control design Induction motors

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Short term electric load forecast with artificial neural networks

arXiv

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arXiv 2018年

作者： Cristian, Vasar Iosif, Szeidert Ioan, Filip Gabriela, Prostean Department of Control System Engineering Politehnica' University from Timisoara Faculty of Automation and Computer Science Timisoara300223 Romania

This paper presents issues regarding short term electric load forecasting using feedforward and Elman recurrent neural networks. The study cases were developed using measured data representing electrical energy consume from Banat area. There were considered 35 different types of structure for both feedforward and recurrent network cases. For each type of neural network structure were performed many trainings and best solution was selected. The issue of forecasting the load on short term is essential in the effective energetic consume management in an open market environment. Copyright © 2007 IFAC Copyright © 2018, The Authors. All rights reserved.

关键词： Electric load forecasting

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Use of accelerometers for material inner defect detection

Use of accelerometers for material inner defect detection

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作者： Krejcar, Ondrej Frischer, Robert Dept. of Measurement and Control Center for Applied Cybernetics Faculty of Electrical Engineering and Computer Science Ostrava Poruba Czech Republic Dept. of Automation and Computing in Metallurgy VSB Technical University of Ostrava Ostrava Poruba Czech Republic

ISBN: (纸本)9788070438657

This paper deals with a possibility of non-destructive diagnostics of solid objects by software analysis of vibration spectrum by accelerometers. By a use of MATLAB platform, a processing and information evaluation from accelerometer is possible. Accelerometer is placed on the measured object. The analog signal needs to be digitized by a special I/O device to be processed offline with FFT (Fast Fourier Transformation). The power spectrum is then examined by developed evaluating procedures.

关键词： Accelerometers

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Predictive maintenance for electrical motors: Current approach and usage of artificial intelligence algorithms

Predictive maintenance for electrical motors: Current approa...

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International Conference on Methods and Models in automation and Robotics (MMAR)

作者： Tomasz Herzog Krzysztof Bartecki Faculty of Electrical Engineering Automatic Control and Computer Science Opole University of Technology Opole Poland Rockwell Automation Power Control Business Katowice Poland

ISBN: (数字)9798350362343

ISBN: (纸本)9798350362350

The article presents the current approach in artificial intelligence methods used in predictive maintenance for electrical motors. The study focuses on presenting data classification methods for fault detection and isolation using data from condition monitoring systems. We discuss the advantages and disadvantages of using machine learning methods like perceptron and Support Vector Machine (SVM) for fault classification problems. Our conclusion shows great interest in machine learning methods combined with condition monitoring systems. Our future research will focus on comparing SVM, perceptron networks, and other methods, such as K-nearest neighbors, with their possibility for implementation in embedded firmware systems.

关键词： Support vector machines Condition monitoring Accuracy Fault detection Artificial neural networks Machine learning Prediction algorithms

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Mobile Robot Fault Tolerant control. Introducing ARTEMIC

Mobile Robot Fault Tolerant Control. Introducing ARTEMIC

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2010 2nd International Conference on Education Technology and computer(第二届IEEE教育技术与计算机国际会议 ICETC 2010)

作者： Cristian Axenie Daniela Cernega Automation and Industrial Informatics Department Computer Science Faculty from "Dunarea de Jos" Univ Control Systems and Applied Informatics Computer Science Faculty from "Dunarea de Jos" Stiintei Stre

Real-time applications should timely deliver synchronized data-sets, minimize latency in their response and meet their performance specifications in the presence of disturbances and faults. The fault tolerant behavior in mobile robots refers to the possibility to autonomously detect and identify faults as well as the capability to continue operating after a fault occurred. This paper introduces a real-time distributed control application with fault tolerance capabilities for differential wheeled mobile robots, named ARTEMIC. Specific design, development and implementation details will be provided in this paper.

关键词： Mobile Robotics Fault Tolerant control Sliding Mode EKF Real-Time Linux Distributed control

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Real Time control Design for Mobile Robot Fault Tolerant control. Introducing the ARTEMIC Powered Mobile Robot.

Real Time Control Design for Mobile Robot Fault Tolerant Con...

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2010 IEEE/ASME International Conference on Mechatronic and Embedded System and Applications(2010 IEEE 机电一体化和嵌入式系统与应用国际会议)

作者： Cristian Axenie Razvan Solea Automation and Industrial Informatics Department Computer Science Faculty from ”Dunarea de Jos” Univ Control Systems and Applied Informatics Computer Science Faculty from ”Dunarea de Jos” University St

Real-time applications should timely deliver synchronized data-sets, minimize latency and jitter in their response and meet their performance specifications in the presence of disturbances and faults. The fault tolerant behavior in mobile robots refers to the possibility to autonomously detect and identify faults as well as the capability to continue operating after a fault occurred. This paper introduces a real-time distributed control application with fault tolerance capabilities for differential wheeled mobile robots, named ARTEMIC. The paper focuses on design details and performance analysis at the system operation level. Some stress tests are executed during normal operation to validate the proposal. Specific design, development and implementation details will be provided in this paper.

关键词： Mobile Robotics Fault Tolerant control Sliding Mode EKF Real-Time Linux Distributed control

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Tool support for the development of IEC 62390 compliant fieldbus profiles

Tool support for the development of IEC 62390 compliant fiel...

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International Conference on Emerging Technologies and Factory automation (ETFA)

作者： Roman Frenzel Martin Wollschlaeger Thomas Hadlich Christian Diedrich Industrial Communications Institute of Applied Computer Science Faculty of Computer Science Technical University of Dresden Dresden Germany Integrated Automation Institute for Control Systems Faculty of Electronic and Computer Science Engineering Otto-von-Guericke University of Magdeburg Germany

Industrial communication systems standardize communication protocols and services. Interoperability within automation and control systems need additional application definitions. This is usually organized with fieldbus profile specifications. Profiles become part of the overall development process of the device manufacturer. Unfortunately, today's profile descriptions are very informal and have nearly no support for the development process. This paper presents a semi-formal profile specification approach, based on IEC 62390 and using a mixed UML and MS Word process. Result of both specifications is an XML representation which can be integrated in the device development process. This method is developed for the PROFIBUS User Organisation for PROFIBUS and PROFINET device profiles.

关键词： Unified modeling language Guidelines IEC standards XML Documentation Safety Formal specifications

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Collaborative learning technologies for project work 1

Collaborative learning technologies for project work

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1st International Conference on Technology Enhanced Learning in Higher Education, TELE 2021

作者： Galkin, Alexander Blyumin, Semen Saraev, Pavel Pimenov, Vladimir Lipetsk State Technical University Faculty of Automation and Computer Science Lipetsk Russia Lipetsk State Technical University Department of Applied Mathematics Lipetsk Russia Lipetsk State Technical University Department of Automated Control Systems Lipetsk Russia Novolipetsk Steel Corporation Lipetsk Russia

ISBN: (纸本)9781665443968

The paper presents an approach to learning based on the implementation of projects under the joint supervision and control of the educational organization and industrial partner. When students carry out projects, collaborative learning technologies are implemented. Periodic joint consultations of students by specialists of different profiles of educational organization and industrial partner help to bring the training closer to the real production process, and upon the completion of the project to get a ready-to-use product. Working in this mode allows students using modern technologies to work on the project, in particular, flexible methodologies of agile development. It helps not to formulate a completely ready technical task for the project, but to adjust it in the process of implementation. Tasks are formulated for a limited time interval of 1-2 weeks, after which the results are evaluated and tasks for the next stage are formed. The paper provides examples of works by students of Lipetsk State Technical University, performed in this format. © 2021 IEEE.

关键词： Students

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Finite-time robust performance improvement for non-linear systems in the presence of input non-linearity and external disturbance

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IET control Theory and Applications 2023年第6期17卷 672-682页

作者： Wang, Haoping Ghaffari, Valiollah Mobayen, Saleh Bartoszewicz, Andrzej Fekih, Afef Assawinchaichote, Wudhichai School of Automation Nanjing University of Science and Technology Nanjing China Department of Electrical Engineering Persian Gulf University Bushehr Iran Graduate School of Intelligent Data Science National Yunlin University of Science and Technology Yunlin Douliou Taiwan Institute of Automatic Control Lodz University of Technology Lodz Poland Department of Electrical and Computer Engineering University of Louisiana at Lafayette LafayetteLA United States Department of Electronic and Telecommunication Engineering Faculty of Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand

The main focus of this research is on improving the performance of dynamic systems with actuator non-linearities and time-varying disturbances. To this end, using the concept of finite-time stability, a novel observer is presented to estimate the disturbances in systems with input non-linearities. Then, introducing an innovative sliding manifold, a robust observer-based technique is derived to guarantee the finite-time stability of the sliding surface. Hence, the closed-loop system would be stable in the presence of hard non-linearities and time-varying disturbances. The performance of the proposed approach was assessed in using a simulation study of two numerical examples. The obtained results and comparison with a conventional method confirmed the benefits of the suggested approach. © 2022 The Authors. IET control Theory & Applications published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology.

关键词： Closed loop systems

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