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Construction of the electromagnetic mill with the grinding system, classification of crushed minerals and the control system

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IFAC-PapersOnLine 2016年第20期49卷 67-71页

作者： Wolosiewicz-Glb, Marta Ogonowski, Szymon Foszcz, Dariusz AGH University of Science and Technology in Cracow Faculty of Mining and Geoengineering Department of Environmental Engineering and Mineral Processing United States Silesian University of Technology Faculty of Automatic Control Electronics and Computer Science Institute of Automatic Control Poland

The article presents the construction of an innovative electromagnetic mill, which in comparison to traditional solutions provide a significant reduction of energy consumption and higher technological performance. The device is equipped with a control system, measuring grinding quality or analyzing the operating status of the mill. Direct control of the grinding process is implemented in industrial controllers (PLC) and is supported by the optimization algorithms that run in the supervisory control system (SCADA). © 2016

关键词： Quality control

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Detection of impulsive disturbances in archive audio signals

Detection of impulsive disturbances in archive audio signals

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IEEE International Conference on Acoustics, Speech and Signal Processing

作者： Marcin Ciolek Maciej Niedzwiecki Faculty of Electronics Telecommunications and Computer Science Department of Automatic Control Gdansk University of Technology Narutowicza 11/12 80-233 Poland

ISBN: (纸本)9781509041183

In this paper the problem of detection of impulsive disturbances in archive audio signals is considered. It is shown that semi-causal/noncausal solutions based on joint evaluation of signal prediction errors and leave-one-out signal interpolation errors, allow one to noticeably improve detection results compared to the prediction-only based solutions. The proposed approaches are evaluated on a set of clean audio signals contaminated with real click waveforms extracted from silent parts of old gramophone recordings.

关键词： Audio signal restoration outlier detection

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Comparative Study on Feature Selection Methods Rooted in Swarm Intelligence for Intrusion Detection

Comparative Study on Feature Selection Methods Rooted in Swa...

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International Conference on control Systems and computer science (CSCS)

作者： Adriana-Cristina Enache Valentin Sgârciu Mihai Togan Faculty of Automatic Control and Computer Science University Politehnica of Bucharest Bucharest Romania Faculty of Computer Science Military Technical Academy Bucharest Romania

ISBN: (纸本)9781538618400

Today, the cyber-space landscape is filled with vulnerabilities and malicious users that exploit them. Adding to this the technological context, with data flooding from all directions, it is evident that maintaining a good level of security for our systems has become a challenge. The high-dimensional datasets generated by all these diverse technologies needs to be processed efficiently. Inside the pool of data records gathered from all the monitored devices, there is also noise that could negatively influence intrusion detection. Feature selection methods(FSM) may offer a plausible solution to this multi-dimensionality problem, because they reduce the number of features and keep only those significant for solving the stated problem. In this paper we propose to conduct a comparative study of feature selection methods for intrusion detection. We focus on wrapper variants of FSM which are based on swarm intelligence algorithms. To conduct our study, we construct our FSM models based on four SI algorithms (PSO, BA, BAL and BAE) in combination with traditional classifiers (SVM, C4.5 and Naive Bayes) and use the NSL-KDD dataset for our test and comparative analysis.

关键词： Particle swarm optimization Support vector machines Computational modeling Feature extraction Intrusion detection Stochastic processes

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Mask-aware networks for crowd counting

arXiv

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arXiv 2018年

作者： Jiang, Shengqin Lu, Xiaobo Lei, Yinjie Liu, Lingqiao School of Computer Science University of Adelaide AdelaideSA5005 Australia Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education Nanjing210096 China School of Automatic Southeast University Nanjing210096 China Control of Complex Systems of Engineering Ministry of Education Nanjing210096 China College of Electronics and Information Engineering Sichuan University Chengdu610064 China School of Computer Science University of Adelaide AdelaideSA5005 Australia

Crowd counting problem aims to count the number of objects within an image or a frame in the videos and is usually solved by estimating the density map generated from the object location annotations. The values in the density map, by nature, take two possible states: zero indicating no object around, a non-zero value indicating the existence of objects and the value denoting the local object density. In contrast to traditional methods which do not differentiate the density prediction of these two states, we propose to use a dedicated network branch to predict the object/non-object mask and then combine its prediction with the input image to produce the density map. Our rationale is that the mask prediction could be better modeled as a binary segmentation problem and the difficulty of estimating the density could be reduced if the mask is known. A key to the proposed scheme is the strategy of incorporating the mask prediction into the density map estimator. To this end, we study five possible solutions, and via analysis and experimental validation we identify the most effective one. Through extensive experiments on five public datasets, we demonstrate the superior performance of the proposed approach over the baselines and show that our network could achieve the state-of-the-art performance. Copyright © 2018, The Authors. All rights reserved.

关键词： Forecasting

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Evaluation of e-portal services from an employee satisfaction perspective: The communications directorate as a case study

UPB Scientific Bulletin, Series C: Electrical Engineering an...

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UPB Scientific Bulletin, Series C: Electrical Engineering and computer science 2017年第3期79卷 19-30页

作者： Al-Shaher, Mohamed Adel 1 College of Science Thi-Qar University Nassiriyah Iraq Faculty of Automatic Control and Computer Science University POLITEHNICA of Bucharest Romania

Decision makers in countries belonging to the Organization for Economic Cooperation and Development (OECD) and even those from non-OECD countries are prioritizing the evaluation of e-portal services. At present, governments are implementing programs to demonstrate the advantages of utilizing information and communication technologies in government administration. Using technology could result in internal efficiency and effectiveness of government actions. Evaluating the performance of the information system can reveal weak and strong points, which could be used in improving the system. For many years, scholars have pushed for assessing user satisfaction as a construct for evaluating such systems. Measuring the performance of the e-Government, which is the core of strategies employed by most Arab countries, could lead to the realization and application of the expected benefits of the system. Nonetheless, despite the popular use of e-Government services and applications worldwide, the assessment of electronic services in Iraq has been neglected in practical and theoretical aspects. Moreover, the new portal in Iraq, which is called "citizen e-Government," has decreased the number of citizens conducting business via electronic transactions. The portal design is complex and not user friendly. To respond to this need, this study assesses "Citizen E-Government Portal," which is a new portal in the Communications Directorate in Thi-Qar, according to employee perspective. The study used five constructs, namely, attractiveness, controllability, helpfulness, efficiency, and learnability, in the evaluation. Our findings revealed several weak points in the proposed e-portal, such as slow speed and unavailability of information needed by users. Hence, introductory explanations are needed to improve the proposed portal to increase user rate.

关键词： Efficiency

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IEC 61131-3 compliant PLC structure based on FPGA multi-core solution 9

IEC 61131-3 compliant PLC structure based on FPGA multi-core...

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9th International Conference on Signals and Electronic Systems, ICSES 2016

作者： Chodorowski, Piotr Chmiel, Miroslaw Silesian University of Technology Faculty of Automatic Control Electronics and Computer Science Poland

ISBN: (纸本)9781509026678

The paper discusses the design process of a full programmable logic controller implemented by means of FPGA device. The PLC is compliant with EN 61131-3 standard. It is equipped with a programmer that allows to transfer a program to the program memory of the controller, and the I/O controller which allows the exchange of information with the outside world, i.e. The signal modules. Some interesting aspects of instruction list and hardware architecture designing are presented, e.g. The PLC structure with a particular emphasis on central processing unit and memory map. The PLC is developed using one FPGA device as a combination of dedicated logic and soft-processor based parts. This gives an opportunity to develop interesting solutions. For example, using dual port RAM gives an opportunity to implement bit/word access without the necessity of masking bits. The paper presents a short description of a designed and written simple integrated development environment. © 2016 IEEE.

关键词： Program processors

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New optimal settings of PI and PID controllers for the first-order inertia and dead time plant

New optimal settings of PI and PID controllers for the first...

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International Scientific Conference on Electric Power Engineering (EPE)

作者： Michal S. Laskawski Miroslaw Wcislik Faculty of Electric Engineering Automatic Control and Computer Science Kielce University of Technology Kielce Poland

ISBN: (纸本)9781509064076

The paper deals with the PI and PID controllers settings. The research includes an overview of the most commonly used control quality criteria. It was assumed that the controlled system can be approximated by first order inertia with dead time. The control systems that includes the model as well as the PI and PID controllers were analyzed in context of control quality taking into account ITAE criterion. The research involved an analysis of the Nyquist diagrams. It enabled us to formulate a new method of tuning of PI and PID controllers. The results obtained with the proposed method were compared to the settings obtained with Ziegler-Nichols method. To illustrate the advantages of the proposed method the system step responses as well as their time and frequency indexes were compared and presented. The proposed method of the PI and PID controller tuning makes it possible to obtain a significant increase of the control quality.

关键词： control systems Mathematical model Tuning Stability criteria Oscillators Steady-state

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Effects of complex motion in a new cantilever-beam nonlinear electromagnetic vibration energy harvester 18

Effects of complex motion in a new cantilever-beam nonlinear...

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18th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, ISEF 2017

作者： Jagiela, Mariusz Kulik, Marcin Faculty of Electrical Engineering Automatic Control and Computer Science Opole University of Technology Opole Poland

ISBN: (纸本)9781538616611

A new cantilever-beam nonlinear electromagnetic vibration energy harvester with noticeable effects of complex motion composed of relative displacement and torsion of the vibrating element is considered. The analysis of frequency characteristics carried out using the finite element models shows significant differences regarding generated output voltage and frequency bandwidth when detailed 2-d variations of the magnetic force components are taken into account. © 2017 IEEE.

关键词： Energy harvesting

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Implementation of Non-Integer Order Filtering for the Purpose of Disparities Detection in Beta Frequencies - A Pilot Study

Implementation of Non-Integer Order Filtering for the Purpos...

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International Conference on Methods and Models in Automation and Robotics

作者： Aleksandra Kawala-Janik Magda Zolubak Waldemar Bauer Bartosz Nazimek Tomasz Sobolewski Radek Martinek Marcin Sowa Mariusz Pelc Faculty of Electrical Engineering Automatic Control and Informatics Opole University of Technology Opole Poland Faculty of Electrical Engineering Automatics Computer Science and Biomedical Engineering AGH University of Science and Technology Krakow Poland Department of Neurosurgery University Hospital in Opole Opole Poland Faculty of Electrical Engineering Silesian University of Technology Gliwice Poland Department of Cybernetics and Biomedical Engineering VSB-Technical University of Ostrava Ostrava Czech Republic

In this work the authors of the hereof paper describe pilot study on implementation of fractional order filtering applied for the purpose of disparities detection in Beta Frequencies. The Beta waves frequency range can be split into three sections, where the information provided by particular section enables more accurate medical diagnosis. Spectral analysis used in this study allowed appropriate isolation of the Beta waves. Implementation of non-integer order filtering in such study is innovative and provided some promising results.

关键词： Electroencephalography Spectrogram Electronic mail Frequency measurement Transfer functions Electrical engineering Stress

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Correction of the on-off control system using PLC

Correction of the on-off control system using PLC

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International Scientific Conference on Electric Power Engineering (EPE)

作者： Miroslaw Wcislik Michal S. Laskawski Faculty of Electric Engineering Automatic Control and Computer Science Kielce University of Technology Kielce Poland

ISBN: (纸本)9781509064076

The paper deals with an analysis of features of on-off controllers. It was assumed that the control quality can be described by three distinctive indexes: the period, the amplitude and the mean value of the controlled signal in the steady state. The on-off controller with positive hysteresis was a basic form of the controller that was analyzed. To eliminate the disadvantages of this basic form the controller structure was augmented by inertia corrector. Its impact on mentioned above indicators was shown and described. To compensate the negative influence of inertia corrector on the mean value of the controlled signal, an additional proportional corrector was proposed. Its influence on control quality was shown and discussed. To show how easy it is to build the proposed structure of the controller, its exemplary implementation in the ladder logic language of the S7-1200 PLC was described.

关键词： control systems Hysteresis Steady-state Oscillators Mathematical model Software packages Computational modeling

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