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IEEE Conference on Decision and control

作者： Takumi Namba Saeed Ahmed Kiyotsugu Takaba Department of Electrical and Electronic Engineering Ritsumeikan University 1-1-1 Noji-Higashi Kusatsu Shiga Japan Jan C. Willems Center for Systems and Control ENTEG Faculty of Science and Engineering University of Groningen Groningen The Netherland

ISBN: (数字)9798350316339

ISBN: (纸本)9798350316346

control of multi-agent systems with physical couplings is motivated by their engineering applications, such as multiple mass-spring-damper systems, power grids, etc., in which each agent not only has information communication but also physical interactions with its neighboring agents. This paper studies robust synchronization problem for uncertain linear agents with physical couplings. We consider the situation where the heterogeneity in agent models is viewed as a memoryless and time-varying parametric uncertainty and where the physical coupling is also considered to be uncertain but norm bounded. Notably, considering these physical couplings to be uncertain makes the robust synchronization problem much more challenging compared to the physically decoupled case. In fact, unlike physically decoupled cases, it is generally difficult to analytically derive synchronization conditions for controller synthesis even if the agents are homogeneous. To this end, we employ a scaled small-gain approach to derive a robust synchronization condition for controller synthesis in terms of linear matrix inequalities.

关键词： Couplings Uncertainty control systems Power grids Linear matrix inequalities Synchronization Multi-agent systems

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Exploration of Bistable Oscillatory Dynamics in a Memristor from Forschungszentrum Jülich 12

Exploration of Bistable Oscillatory Dynamics in a Memristor ...

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12th International Conference on Modern circuits and systems Technologies, MOCAST 2023

作者： Schmitt, N. Ascoli, A. Messaris, I. Demirkol, A.S. Ntinas, V. Prousalis, D. Tetzlaff, R. Nikolaidis, S. Menzel, S. Rana, V. Technische Universität Dresden Institute of Circuits and Systems Faculty of Electrical and Computer Engineering Dresden Germany Aristotle University of Thessaloniki Department of Physics Thessaloniki Greece Peter Grünberg Institut 7 Forschungszentrum Jülich GmbH Jülich Germany Peter Grünberg Institut 10 Forschungszentrum Jülich GmbH Jülich Germany

ISBN: (纸本)9798350321074

Very recently, a deep numerical investigation of resistance switching phenomena in a TaOxReRAM cell from Forschungszentrum Jülich, based on a predictive physics-based model, uncovered the capability of the nano-device to exhibit one of two possible steady-state oscillatory behaviours, depending upon the initial condition, under specific AC periodic triangular wave stimuli. In these circumstances, however, one of the two oscillations in the device memory state, was found to hit cyclically the lower bound in the existence domain of the model solution. Out of a thorough numerical exploration of the model, guided by system-theoretic considerations based upon the Time Average State Dynamic Route tool, this paper shows that it is indeed possible to shape the parameters of an AC periodic pulse train excitation signal so that each of the two locally-stable oscillatory response solutions for the memory state of the ReRAM cell lie well within the range of admissible values. © 2023 IEEE.

关键词： RRAM

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Towards Energy Efficient control for Commercial Heavy-Duty Mobile Cranes: Modeling Hydraulic Pressures using Machine Learning

arXiv

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arXiv 2023年

作者： Taheri, Abdolreza Pettersson, Robert Gustafsson, Pelle Pajarinen, Joni Ghabcheloo, Reza Control Systems R&D HIAB Hudiksvall Sweden Faculty of Engineering and Natural Sciences Tampere University Tampere Finland Department of Electrical Engineering and Automation Aalto University Espoo Finland

A sizable part of the fleet of heavy-duty machinery in the construction equipment industry uses the conventional valve-controlled load-sensing hydraulics. Rigorous climate actions towards reducing CO2 emissions has sparked the development of solutions to lower the energy consumption and increase the productivity of the machines. One promising solution to having a better balance between energy and performance is to build accurate models (digital twins) of the real systems using data together with recent advances in machine learning/model-based optimization to improve the control systems. With a particular focus on real-world machines with multiple flow-controlled actuators and shared variable-displacement pumps, this paper presents a generalized machine learning approach to modeling the working pressure of the actuators and the overall pump pressures. The procedures for deriving reaction forces and flow rates as important input variables to the surrogate models are described in detail. Using data from a real loader crane testbed, we demonstrate training and validation of individual models, and showcase the accuracy of pressure predictions in five different experiments under various utilizations and pressure levels. © 2023, CC BY.

关键词： Energy utilization

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ELEKTRO

作者： Juraj Ž dá nsky Jozef Hrbč ek Karol Rá stoč ný Department of Control and Information Systems Faculty of Electrical Engineering and Information Technology University of &#x017D ilina &#x017D ilina Slovakia

ISBN: (数字)9781665467261

ISBN: (纸本)9781665467278

Safety PLCs have become a popular device for implementing safety functions in industrial applications. Their correct use is the prerequisite for achieving the required safety integrity level (SIL). This is closely related to the parametrization of the safety PLC (setting of the parameters). This paper deals mainly with parameters influencing the safety of two-channel connection of sensors to the safety PLC.

关键词： Performance evaluation Analytical models Computer architecture Probabilistic logic Time measurement Safety Sensors

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Comparison of Various Mathematical Models of 8/20 µs Current Surge and their Influence on RFID Marker

Comparison of Various Mathematical Models of 8/20 µs Curren...

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ELEKTRO

作者： Peter Vestenický Alž beta Kaná liková Department of Control and Information Systems Faculty of Electrical Engineering and Information Technology University of &#x017D ilina &#x017D ilina Slovakia

ISBN: (数字)9781665467261

ISBN: (纸本)9781665467278

In technical praxis the underground facility networks such as gas and water pipes or telecommunication and energetic cables are marked by special RFID markers to enable localization and identification of the network. Due to influence of climatic effects such as lightning part of the lightning surge current may be induced into the markers. This paper gives a comparison of various mathematical models of the surge current induced into conductors and these mathematical models are used to calculate current waveform in the markers. Finally, the voltage waveform across the capacitor in the marker resonant circuit is calculated to enable proper dimensioning of the capacitor and to increase the long term marker reliability.

关键词： Analytical models Capacitors Resonant frequency RLC circuits Voltage Mathematical models Surges

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Reconnaissance Robot for Rescue Services

Reconnaissance Robot for Rescue Services

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ELEKTRO

作者： Marek Bujň á k Rastislav Pirní k Pavol Kuchá r Alž beta Kaná liková Department of Control and Information Systems Faculty of Electrical Engineering and Information Technology University of &#x017D ilina &#x017D ilina Slovakia

ISBN: (数字)9781665467261

ISBN: (纸本)9781665467278

The spherical robots are becoming very popular in the field for many scientists and researchers working with surveillance, military, or transportation systems. This paper deals with comparing of each driving mechanism of the spherical robot. The vast majority of spherical robots only have inertial sensors, which they use for movement, positioning, travel balancing, etc. Few spherical robots can interact with the environment. Those who can do this have sensors that can measure the properties of the environment or can influence the environment in some way. The article also deals with the possibility to use sensors like cameras, gas sensors, thermocouples, and LiDARs. Data from these sensors will be processed using artificial intelligence techniques to detect anomalies in the environments. Chosen sensors can expand a robot's sensing capabilities which are usually very narrow. The aim of the article is to design s special type of spherical robot. If we join all these components together we can create a reconnaissance spherical robot for rescue services special designated for tunnels or closed *** prototype is a financially inexpensive robot, which is also suitable for the teaching process, as an element that collects data from the environment (sensors, video, etc.), which will be used for working with AI tools.

关键词： Temperature measurement Laser radar Robot vision systems Thermocouples Reconnaissance Robot sensing systems Sensors

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Biological Influence of Low-Frequency Electromagnetic Field Exposition Based on Selected Cell Death Markers

Biological Influence of Low-Frequency Electromagnetic Field ...

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ELEKTRO

作者： Robert Cichorowski Olga Kocikowska Marek Bajtoš Roman Radil Ladislav Janoušek Daria Gendosz De Carrillo Sebastian Student Faculty of Automatic Control Electronics and Computer Science Silesian University of Technology liwice Poland Department of Engineering and Systems Biology Faculty of Automatic Control Electronics and Computer Science Gliwice Poland Department of Physiology Faculty of Medical Sciences Silesian University of Medicine Katowice Poland Department of Electromagnetic and Biomedical Engineering Faculty of Electrical Engineering and Informational Technology Žilina Slovakia Department of Histology Faculty of Medical Sciences in Zabrze Silesian University of Medicine Zabrze Poland Biotechnology Center Silesian University of Technology Gliwice Poland

ISBN: (数字)9798350372359

ISBN: (纸本)9798350372366

This work presents the results of the examination of the HeLa cell line exposure on the ELF-EMF (extremely low-frequency electromagnetic field). In particular, the relationship between ELF-EMF exposition time and cell death. The examination of cell death hallmarks were examined by estimation levels of selected proteins - FACL4 (a protein that is a part of the ferroptosis pathway) and CK18 (Cytokeratin related to necrosis and apoptosis pathways) in the proposed model of workers exposed to ELF-EMF week.

关键词： Proteins Biological system modeling Estimation Electromagnetic fields

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A Backstepping Integral Sliding Mode controller Design for Partial Feedback Linearized Models of Synchronous Generators in Simple Power systems to Improve the Transient Stability 2

A Backstepping Integral Sliding Mode Controller Design for P...

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2nd IEEE International Conference on Smart Technologies for Power, Energy and control, STPEC 2021

作者： Pramanik, M.A.H. Roy, T.K. Anower, M.S. Ghosh, S.K. Mahmud, M.A. Rajshahi University of Engineering Technology Department of Electrical Computer Engineering Rajshahi6204 Bangladesh Rajshahi University of Engineering Technology Department of Electronics Telecommunication Engineering Rajshahi Bangladesh Rajshahi University of Engineering Technology Department of Electrical Electronic Engineering Rajshahi6204 Bangladesh Northumbria University Electrical Power Control Systems Research Group Faculty of Engineering and Environment Newcastle United Kingdom

ISBN: (纸本)9781665443197

This paper proposes a backstepping integral sliding mode controller (BISMC) based on the partial feedback linearization (PFBL) of the detailed model of synchronous generators (SGs) in simple power networks. The proposed scheme is designed to obtain the excitation control input using the detailed model of SGs in a simple power system where the PFBL is used to simplify the model. The BISMC is employed on this simplified model to ensure the transient stability during large disturbances. The inherent property of the BISMC tackles the chattering and overcomes the parameter sensitivity problem of the PFBL scheme. Simulation studies are conducted under different operating situations to justify the effectiveness of the proposed PFBL-BISMC over a partial feedback linearizing controller (PFBLC). © 2021 IEEE.

关键词： Synchronous generators

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A Composite Nonlinear controller Design to Enhance the Large-Signal Stability of a DC Distribution System with Constant Power Loads 2

A Composite Nonlinear Controller Design to Enhance the Large...

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2nd IEEE International Conference on Smart Technologies for Power, Energy and control, STPEC 2021

作者： Ghosh, S.K. Roy, T.K. Pramanik, M.A.H. Mahmud, M.A. Rajshahi University of Engineering Technology Department of Electrical Electronic Engineering Rajshahi6204 Bangladesh Rajshahi University of Engineering Technology Department of Electronics Telecommunication Engineering Rajshahi6204 Bangladesh Rajshahi University of Engineering Technology Department of Electrical Computer Engineering Rajshahi6204 Bangladesh Northumbria University Newcastle Electrical Power Control Systems Research Group Faculty of Engineering and Environment United Kingdom

ISBN: (纸本)9781665443197

A composite backstepping integral sliding mode controller (BISMC) is proposed in this work for a DC-DC boost converter feeding a constant power load (CPL) in a simple DC distribution system. Here, the main objective is to ensure the large-signal stability with wide variations in operating regions. The proposed BISMC is designed based on the feedback linearized model of the DC-DC boost converter with a CPL where the average state-space model is exactly linearized. The use of exact feedback linearization overcomes the non-minimum phase problem of a DC-DC boost converter due to the presence of the CPL that exhibits negative impedance characteristics. The control law is obtained using the combination of backstepping and integral sliding mode control schemes where both approaches ensure the faster convergence of errors for all states and the integral action on the sliding surface is designed in such a fashion that will ensure the constant frequency operation of the power converter feeding the CPL while eliminating the variable frequency associated problem of the existing controllers. In addition, the stability of the whole system is analyzed through the Lyapunov stability theory. Numerical simulations are conducted to verify the performance of the designed composite nonlinear controller whose performance is also compared with a double-loop proportional integral (PI) controller to verify the superiority of the designed controller. © 2021 IEEE.

关键词： Backstepping

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Flexible control of the Interline DC Power Flow controller Using Virtual Capacitor in VSC-HVDC Grids

Flexible Control of the Interline DC Power Flow Controller U...

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Power Electronic and Drive systems and Technologies Conference (PEDSTC)

作者： Mirhamed Pourmirasghariyan Mirsajed Pourmirasghariyan Seyed Saeid Heidari Yazdi Seyyed Yousef Mousazadeh Mousavi Kumars Rouzbehi G. B. Gharehpetian Departement of Electrical and Computer Engineering Amirkabir University of Technology Tehran Iran School of Electrical and Computer Engineering College of Engineering University of Tehran Tehran Iran Department of Electrical & Computer Engineering School of Engineering and Digital Science Nazarbayev University Nur-Sultan Kazakhstan Faculty of Engineering and Technology University of Mazandaran Sari Iran Department of Systems and Automatic Control Engineering University of Seville Seville Spain

The performance of Interline DC Power Flow controllers (IDC-PFCs) in Voltage Source Converters (VSC)-based High Voltage Direct Current (HVDC) grids, can be affected due to different issues. The current limitation of HVDC lines, the voltage limitation of HVDC buses, and DC voltage of the IDC-PFC intermediary capacitor prevent effective and efficient operation of IDC-PFCs. In this paper, it is shown that this issue can be overcome by using a virtual capacitor in parallel with the IDC-PFC intermediary capacitor. Also, an energy control-based scheme is proposed for the operation of IDC-PFCs in VSC-HVDC grid. The benefits of using the virtual capacitor are: widening the operational area of the IDC-PFCs for the determined duty cycle and injecting more voltage in series to the interconnected HVDC line to control the related HVDC line current. The proposed solution is successfully evaluated on a CIGRE three-terminal VSC-HVDC grid which is modeled by linearized space-state equations.

关键词： Fluctuations HVDC transmission Capacitors High-voltage techniques Boosting Mathematical models Power conversion

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