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International Conference on Smart Green technology in Electrical and Information Systems (ICSGTEIS)

作者： Fumiyoshi Kuwashima Mona Jarrahi Semih Cakmakyapan Kenji Wada Masanobu Haraguchi Yuki Kawakami Takeshi Moriyasu Osamu Morikawa Kazuyoshi Kurihara Hideaki Kitahara Takashi Furuya Makoto Nakajima Masahiko Tani Dep. of Electr. and Electron. Eng. Fukui University of Technology Fukui Japan Electrical and Computer Eng. UCLA Los Angeles CA USA Dep. of Physics and Electronics Osaka Metropolitan University Osaka Japan Industrial and Social Science Grad. Sch. of Tech. Tokushima Univ. Tokushima Japan Dep. of Elec. and Inf. Eng. Natl. Inst. of Tech. Fukui Col. Fukui Japan Faculty of Engineering University of Fukui Fukui Japan Chair of Liberal Arts Japan Coast Guard Academy Kure Japan School of Education University. of Fukui Fukui Japan FIR-UF University of Fukui Fukui Japan Inst. of Laser Engineering Osaka Univ. Osaka Japan

We apply the chaos supremacy of laser chaos system to the high stabilization of THz waves. Stability was demonstrated by down converting the optical beats between laser longitudinal modes in the THz domain to the radio frequency domain and comparing a conventional free running CW laser diode to a chaotically oscillating laser diode. Because of their exceptional stability, chaotically oscillating lasers are attractive options for optical pump sources in terahertz time-domain spectroscopy systems.

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An Overview on Big Data Mining Using Evolutionary Techniques

An Overview on Big Data Mining Using Evolutionary Techniques

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2020 International Conference on Innovation and Intelligence for Informatics, Computing and Technologies, 3ICT 2020

作者： Alaeddin, Fadia Khalifeh, Ala' Darabkh, Khalid A. Princess Sumaya University for Technology Luminus Technical University College Computer Science Department Amman Jordan German Jordanian University Dep. of Electrical Eng. Amman Jordan University of Jordan Dept. of Computer Engineering Amman Jordan

ISBN: (纸本)9781728196732

Big Data processing suffers from several limitations due to its magnitude making it time consuming to implement any kind of analysis such as data mining. Evolutionary Algorithms (EAs) are metaheuristic optimization algorithms inspired by the natural behavior of the population evolution such as Genetic Algorithm, Artificial Bee Colony, Artificial Ant Colony and other swarm intelligence algorithms. EAs have recently been used to overcome Big Data limitations, especially memory consumption and the long execution time. This paper provides an overview of the recent research papers that utilize evolutionary algorithms to deal with the optimization problems related to Big Data mining such as clustering, classification and features' selection. © 2020 IEEE.

关键词： K-means clustering

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Extremum Seeking Control for Beam Steering using Hypersurfaces

Extremum Seeking Control for Beam Steering using Hypersurfac...

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IEEE International Conference on Communications Workshops, ICC

作者： Nouman Ashraf Marios Lestas Taqwa Saeed Hamidreza Taghvaee Sergi Abadal Andreas Pitsillides Christos Liaskos Dep. of Electrical Engineering Frederick University Dep. of Computer Science University of Cyprus Nicosia Cyprus Dep. of Computer Architecture Universitat Politècnica de Catalunya Barcelona Spain Institute of Computer Science Foundation of Research and Technology Hellas Heraklion Greece

ISBN: (数字)9781728174402

ISBN: (纸本)9781728174419

Hypersurface, a software defined metasurface (SDM) paradigm constitutes a revolutionary technology aiming at offering programmatic control over all aspects of a propagating wave, altering its direction, power, polarization and phase. In the absence of line of sight (LOS) between a transmitter and a receiver, HSF can provide seamless connectivity via programmatic reflection. However, such an application requires fine tuning of the metasurface reconfiguration parameters, which may not be effective when done in an open loop fashion due to model uncertainties. In this work, we consider a feedback-based formulation of the problem, which involves maximization of the received power and propose the use of Extremum Seeking Control (ESC) for the controller implementation due to fact that it is model-free and adheres to the maximization problem. Extensive simulations indicate that the proposed scheme is successful in guiding the impinging wave to the receiver within reasonable time even in the presence of time varying delays incurred by message propagation. In addition, a discrete time implementation is considered, investigating its limitations as we increase the sampling time while also characterizing the traffic within the controller network.

关键词： Receivers Beam steering Transmitters Aerospace electronics computer science Software Delays

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Controller Chip Design of Serial-Parallel-Switched-Capacitor Coupled-Inductor Boost DC-AC Inverter

Controller Chip Design of Serial-Parallel-Switched-Capacitor...

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IEEE International Conference on Power and Energy Applications (ICPEA)

作者： Yuen-Haw Chang Zheng-Bin Li Dep. of Computer Science and Information Engineering Chaoyang University of Technology Wufong Taichung Taiwan

ISBN: (数字)9781728190297

ISBN: (纸本)9781728190303

This work is focused on the controller chip design/ implementation of serial-parallel-switched-capacitor coupledinductor (SPSCCI) inverter applied to high-gain boost DC-AC conversion. The controlled plant is its power part made up of SPSCCI booster and DC-link inverter to perform a practical DC-AC conversion from 12V to 110VRMS, 60Hz. Here, for achieving this goal, the controller is its control part constructed by sinusoidal pulse-width-modulation (SPWM) compensator plus phase generator, and then is implemented under Cadence full-custom design through pre-layout simulation (PRE-SIM) and post-layout simulation (POST-SIM) on a fabricated chip of integrated circuit: no. D35-105B-E0008, TSMC 0.35μm 2P4M, 1500×1500μm 2 , 5.0V, 2.68mW, max frequency 200kHz. Finally, with the help of this controller chip, a closed-loop prototype circuit of this SPSCCI can be realized and verified experimentally for some test cases of DC-AC to validate the feasibility of this inverter.

关键词： Inverters Layout Integrated circuit modeling Inductors Switches Chip scale packaging Generators

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Performance Monitoring and Controlling of Multicore Shared-Memory Parallel Processing Systems

Performance Monitoring and Controlling of Multicore Shared-M...

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Information technology To Enhance e-learning and Other Application (IT-ELA)

作者： Lailan M Haji Subhi R. M. Zeebaree Zainab Salih Ageed Omar M. Ahmed Mohammed A. M. Sadeeq Hanan M. Shukur Computer Science Dep. Faculty of Science University of Zakho Duhok Iraq Energy Eng. Dept. Technical College of Engineering Duhok Polytechnic University Duhok Iraq Computer Science Dept. College of Science Nawroz University Duhok Iraq Information Technology Dept. Zakho Technical Institute Duhok Polytechnic University Duhok Iraq ITM Dept. Technical College of Administration Duhok Polytechnic University Duhok Iraq Computer Engineering Dept. Al-Kitab University Kirkuk Iraq

The field of research known as “parallel processing” examines architectural and algorithmic methods for increasing the efficiency and other desirable qualities (such as cost-effectiveness and reliability) of computers by exploiting many forms of concurrency. The development of multi-core CPUs has opened the door to novel strategies for boosting system performance via parallelism. Increasing the number of concurrent threads greatly affects the time cost. While increased parallelism might reduce calculation time, the associated synchronization costs would likely be prohibitive for most applications. In this article, we'll go through the first half of the process, which involves gathering requirements and designing a prototype; the second half, which involves monitoring and managing a program that can run on a wide range of multicore system architectures, including those with (2, 4, and 8 CPUs). A shared-memory parallel processing method was proposed and built to show off the system's full potential. The implications of multi-core systems on overall program execution time and parallel processing in shared-memory systems provide the backbone of this investigation.

关键词： Costs Multicore processing System performance Systems architecture Prototypes Parallel processing Central Processing Unit

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Learning Based Model Predictive Control for Quadcopters with Dual Gaussian Process

arXiv

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arXiv 2021年

作者： Liu, Yuhan Tóth, Roland The Harbin Institute of Technology Department of Control Science and Engineering Harbin China The Eindhoven University of Tech. Dep. of Electrical Eng. Control Systems Group Eindhoven Netherlands The Institute for Computer Science and Control Budapest Hungary

An important issue in quadcopter control is that an accurate dynamic model of the system is nonlinear, complex, and costly to obtain. This limits achievable control performance in practice. Gaussian process (GP) based estimation is an effective tool to learn unknown dynamics from input/output data. However, conventional GP-based control methods often ignore the computational cost associated with accumulating data during the operation of the system and how to handle forgetting in continuous adaption. In this paper, we present a novel Dual Gaussian Process (DGP) based model predictive control strategy that improves the performance of a quadcopter during trajectory tracking. The bio-inspired DGP structure is a combination of a long-term GP and a short-term GP, where the long-term GP is used to keep the learned knowledge in memory and the short-term GP is employed to rapidly compensate unknown dynamics during online operation. Furthermore, a novel recursive online update strategy for the short-term GP is proposed to successively improve the learnt model during online operation in an efficient way. Numerical simulations are used to demonstrate the effectiveness of the proposed strategy. © 2021, CC BY-NC-SA.

关键词： Model predictive control

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Reinforcement Learning for Anti-Ransomware Testing

Reinforcement Learning for Anti-Ransomware Testing

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East-West Design & Test Symposium (EWDTS)

作者： Alexander Adamov Anders Carlsson NioGuard Security Lab Kharkiv National University of Radio Electronics Kharkiv Ukraine Dep. of Software Engineering Blekinge Institute of Technology Karlskrona Sweden Dep. of Computer Science Blekinge Institute of Technology Karlskrona Sweden

ISBN: (数字)9781728198996

ISBN: (纸本)9781728199009

In this paper, we are going to verify the possibility to create a ransomware simulation that will use an arbitrary combination of known tactics and techniques to bypass an anti-malware defense. To verify this hypothesis, we conducted an experiment in which an agent was trained with the help of reinforcement learning to run the ransomware simulator in a way that can bypass anti-ransomware solution and encrypt the target files. The novelty of the proposed method lies in applying reinforcement learning to anti-ransomware testing that may help to identify weaknesses in the anti-ransomware defense and fix them before a real attack happens.

关键词： Ransomware Cryptography Detectors Encoding Reinforcement learning Games Testing

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Short Circuit Performance and Current Limiting Mode of a Monolithically Integrated SiC Circuit Breaker for DC Applications up to 800 V

Short Circuit Performance and Current Limiting Mode of a Mon...

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European Conference on Power Electronics and Applications

作者： Norman Boettcher Taro Takamori Keiji Wada Wataru Saito Shin-ichi Nishizawa Tobias Erlbacher Fraunhofer Institute for Integrated Systems and Device Technology (IISB) Erlangen Germany Dep. of Electrical Engineering and Computer Science Tokyo Metropolitan University Hachioji-shi Tokyo Japan Kyushu University Research Institute for Applied Mechanics Renewable Energy Center Kasuga-shi Fukuoka Fukuoka Japan Friedrich-Alexander University Chair of Electron Devices (LEB) Erlangen Germany

ISBN: (数字)9789075815399

ISBN: (纸本)9781665487009

This paper presents the short circuit performance of a novel SiC circuit breaker device, which is based on the “thyristor dual” functionality. The developed device structure is motivated with regard to manufacturing aspects and electrical requirements. Furthermore, the basic “thyristor dual” operation is elaborated on the basis of quasi-static electrical measurements of a fabricated prototype. The proposed self-sensing and self-triggering devices make auxiliary circuitry like sensors and micro-controllers expendable and practically have no propagation delay. As a result, short circuit clearance within 122 ns at 800 V is demonstrated in experiments. Moreover, by utilisation of a third device terminal, a temporary current limiter functionality can be obtained. The scalability of the current limit value is discussed on the basis of measurements in time domain. The maximum current limit value achieved is 7.4 times higher than the trigger current level of the circuit breaker device. Additionally, the same circuit configuration which is used for the current limiting mode, allows to remotely reset the circuit breaker after it turned to blocking-state. This opens up a wide range of possibilities to enhance the circuit breaker with intelligent functionalities.

关键词： Thyristors Circuit optimization Limiting Silicon carbide Circuit breakers Prototypes Topology

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Design Monitoring Electrical Power Consumtion at computer Cluster

Design Monitoring Electrical Power Consumtion at Computer Cl...

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International Symposium on Nanoscience and Nanotechnology in Life sciences 2017, ISNNLS 2017

作者： Alfianto, Enggar Agustini, Siti Muharom, Syahri Rusydi, Febdian Puspitasari, Ira Department of Computer System Institut Teknologi Adhi Tama Surabaya Jl. Arief Rachman Hakim No 100 Surabaya Indonesia Electrical Engineering Department Institut Teknologi Adhi Tama Surabaya Jl. Arief Rachman Hakim No 100 Surabaya Indonesia Theoretical Physics Research Group Dep. of Physics Fac. of Science and Technology Airlangga University Jl. Mulyorejo Surabaya60115 Indonesia Dep. of the Information System Fac. of Science and Technology Airlangga University Jl. Mulyorejo Surabaya60115 Indonesia

Electricity is one of the basic needs in the era of technological development, where all equipment must use electricity to operate such as computer, so that it requires a system that can monitor power consumption at computer cluster. To monitoring power consumption using WCS1800 to current sensor and microcontroller Atmega32 to data sensor process, and serial communication to send data to display at personal computer. From test system having two result, first is power consumption at computer cluster starting, where current value range is 0 to 38A with power consumption is 0 to 8360 watt. And second is power consumtion at computer cluster execution progran, current value is 27 to 40 A, with power consumption 5940 to 8800 watt. From this system has been design, the power consumption at computer cluster can be monitored and known value of energy consumption. © 2020 Published under licence by IOP Publishing Ltd.

关键词： Electric power utilization

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Hamiltonian Control for CC-CV Primary-side Buck Converter of Inductive Wireless EV Charging

Hamiltonian Control for CC-CV Primary-side Buck Converter of...

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IEEE/IAS Industrial and Commercial Power System Asia (I&CPS Asia)

作者： Thanet Sriprom Jutturit Thongpron Uthen Kamnarn Anon Namin Noureddine Takorabet Nicu Bizon Serge Pierfederici Babak Nahid-Mobarakeh Pongsiri Mungpom Burin Yodwong Phatiphat Thounthong Department of Electrical Engineering Faculty of Rajamangala University of Technology Lanna (RMUTL) Chiang Mai Thailand Groupe de Recherche en Energie Electrique de Nancy (GREEN) Universite de Lorraine Nancy France The National University of Science and Technology POLITEHNICA Bucharest Pitesti University Centre Pitesti Romania Laboratoire d'Energetique et de Mecanique Theorique et Appliquee (LEMTA) University of Lorraine Vandceuvre-Les-Nancy France Electrical and Computer Engineering McMaster University Hamilton Canada Thai French Innovation Institute King Mongkut's University of Technology North Bangkok Bangkok Thailand Dep. of Teacher Training in EE Faculty of Technical Education KMUTNB Bangkok Thailand

ISBN: (数字)9798350352290

ISBN: (纸本)9798350352306

This study presents a Hamiltonian control law for constant current - constant voltage (CC-CV) inductive wireless charging. The novel control system design, simulation, and experimentation aimed to confirm the Hamiltonian controller is a superior choice. The wireless charging experiments tested the step-resistant battery simulator and the EV battery. Based on the findings, it is possible to run the Hamiltonian control law for continuous 10A and 82 V charging while maintaining optimal response, stability, and realization. The charging system's maximum efficiency and power were 76.5% and 782 W.

关键词： Wireless communication Lithium-ion batteries PI control Buck converters Inductive charging Asia Stability analysis Electric vehicle charging Voltage control

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