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4th International Conference on Ubiquitous Computing and Intelligent Information systems, ICUIS 2024

作者： Molefinyane, Sefemo Yahya, Abid Hamsadhwani, V. Rohini, R. Samikannu, Ravi Begam, K.Maruliya Botswana International University of Science and Technology Department of Electrical and Communications Systems Engineering Palapye Botswana Periyar Maniammai Institute of Science and Technology Department of Electrical and Electronics Engineering Thanjavur India Vivekanandha College of Engineering for Women Department of Computer Science and Engineering Tiruchengode India Saveetha School of Engineering Saveetha Institute of Medical and Technology Science Department of Computer Science and Communications Engineering Tiruchengode India

ISBN: (纸本)9798331529635

Intravenous (IV) therapy is a critical component of modern healthcare, yet traditional IV systems are prone to human errors, manual adjustments, and limited monitoring capabilities, which can jeopardize patient safety and hinder healthcare efficiency. This paper presents the development of the Smartdrip IV Infusion System, a sophisticated and automated solution that integrates advanced sensors, control algorithms, and intuitive user interfaces to address these limitations. The Smartdrip system minimizes human intervention, provides real-time monitoring, and automates fluid administration with enhanced precision and safety features. The system demonstrates high reliability through simulation and prototype testing in detecting anomalies, issuing alerts, and ensuring accurate infusion rates, thereby improving patient outcomes and reducing healthcare provider workload. The results validate the Smartdrip system as a transformative approach to optimizing IV therapy in diverse clinical settings. © 2024 IEEE.

关键词： Automated Infusion System Drip Rate Monitoring Healthcare Automation Intravenous Therapy Patient

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Computational Analysis of Perovskite Based Standalone Solar PV System 3

Computational Analysis of Perovskite Based Standalone Solar ...

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3rd IEEE International Conference on Sustainable Energy and Future Electric Transportation, SeFet 2023

作者： Verma, Shresth Singh, Aditya H. Bhargava, Kshitij Institute of Infrastructure Technology Research and Management Department of Electrical and Computer Science Engineering Gujarat Ahmedabad380026 India

ISBN: (纸本)9798350319972

Perovskite solar cells (PSCs) are a promising alternative to traditional silicon solar cells due to their low cost, high efficiency, and ease of fabrication. In this study, we employed CH3NH3SnI3 as the absorber layer material in a PSC structure and utilized SCAPS-1D software to simulate the solar cell behavior. The optimized parameters were obtained by considering previous analysis conducted for the proposed structure. The results obtained like Voc, Jsc, FF, and η are 0.81 V, 32.76 mA/cm2, 77.0%, and 21.3% respectively. The simulation results indicate that CH3NH3SnI3 has great potential as a cost-effective and highly efficient absorber material in PSCs for standalone systems. Additionally, we conducted a module-level analysis of the simulated device for a standalone system by employing PVsyst software. Using the electrical parameters obtained from the simulation, the performance of a solar module containing 60 cells with dimensions of (1.038 × 1.038) m2 was analyzed. The analysis focused on evaluating the panel's output power, incident irradiation, and temperature, all of which were calculated for a specific geographic location. © 2023 IEEE.

关键词： Perovskite

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Network-Agnostic Voltage-to-Power Sensitivities of a Real-Time Reduced Active Distribution Network

Network-Agnostic Voltage-to-Power Sensitivities of a Real-Ti...

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2023 IEEE PES Innovative Smart Grid Technologies - Asia, ISGT Asia 2023

作者： Prasad, Manorath Rather, Zakir Hussain Razzaghi, Reza Doolla, Suryanarayana Indian Institute of Technology Bombay Department of Energy Science and Engineering Mumbai India Monash University Department of Electrical and Computer Systems Engineering Melbourne Australia

ISBN: (纸本)9798350327748

The advent of distribution-level phasor measurement units (D-PMUs) has enhanced the observability of active distribution networks (ADNs) and improved their energy management and control. Recently, various ADN control strategies that require detailed network parameter information have been proposed based on the voltage-to-power sensitivities of the ADN nodes. This paper proposes a new realistic approach to determining nodal voltage-to-power sensitivities of a synchrophasor measurement-based reduced ADN model. The real-time synchrophasor data dynamically updates the parameters of the reduced equivalent model to follow the time-varying operating conditions of the ADN accurately. The voltage-to-power sensitivities of the retained observable nodes are derived from the power flow Jacobian matrix using reduced equivalent model parameters. Thus, the proposed approach is agnostic about detailed line impedance data of the complex ADN. Further, the computational complexity is significantly decreased with the reduced number of nodes in the equivalent ADN model. The proposed approach has been tested on modified IEEE-33 bus benchmark system with high penetration of photovoltaic inverters using a DIgSILENT PowerFactory MATLAB co-simulation platform. © 2023 IEEE.

关键词： Electric power distribution

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Enhancement of dampinglike spin-orbit torque efficiency using light and heavy nonmagnetic metals on a polycrystalline RuO2 layer

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Physical Review B 2024年第13期110卷 134423页

作者： Yoshiaki Saito Shoji Ikeda Shutaro Karube Tetsuo Endoh Center for Innovative Integrated Electronic Systems Center for Science and Innovation in Spintronics Research Institute of Electrical Communication Institute for Chemical Research Department of Electrical Engineering Graduate School of Engineering

Crystal growth and magnetic and spin-orbit torque (SOT) properties of the systems with polycrystalline RuO2 consisting of RuO2/SHM/Co/Ir/MgO/Ta (SHM = Pt, [Pt/Ir] multilayer) and RuO2/NM/Pt/Co/Ir/MgO/Ta (NM=Ru,Ti) and the effects of RuO2 and light or heavy metal (NM and SHM) interfaces on spin current generated from the spin-split band (SSB) are investigated. The Pt layer and [Pt/Ir] multilayer on the polycrystalline RuO2 layer have flat and (111) texture, which induces perpendicular magnetization of Co. Enhancement of dampinglike SOT efficiency (ξDL) in the thin Pt and [Pt/Ir]-multilayer thickness region and nearly constant magnitude of ξDL as a function of the thickness of NM=Ti are observed. Moreover, field-free switching was observed even in the polycrystalline RuO2/Pt heavy metal system in the thin Pt thickness region (tPt≤2nm). The observed field-free switching may be related to the exchange bias from the antiferromagnetic RuO2 layer to the Co layer through a thin Pt layer. The spin-torque ferromagnetic resonance results show that the x- and z-spin polarizations originating from SSB are canceled out for the polycrystalline RuO2 system. These results indicate that the efficiency of SOT is enhanced by orbital Rashba-Edelstein, spin Hall, and orbital Hall effects. We expect that polycrystalline RuO2-based systems will pave the way to antiferromagnetic spintronics.

关键词： electrical conductivity electrical properties Magnetism Spin-orbit coupling Spintronics

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A LESO Based Backstepping Controller Considering Coal Seam Hardness for Rotary Speed in Coal Mine Tunnel Drilling Process

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Journal of systems Science & Complexity 2024年第5期37卷 1789-1808页

作者： CHEN Luefeng LIU Xiao WU Min LU Chengda PEDRYCZ Witold HIROTA Kaoru School of Automation China University of GeosciencesWuhan 430074China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan 430074China Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of EducationWuhan 430074China Department of Electrical and Computer Engineering University of AlbertaEdmontonAB T6R2G7Canada The Tokyo Institute of Technology Yokohama 226-8502Japan

In the process of coal mine drilling,controlling the rotary speed is important as it determines the efficiency and safety of *** this paper,a linear extended state observer(LESO)based backstepping controller for rotary speed is proposed,which can overcome the impact of changes in coal seam hardness on rotary ***,the influence of coal seam hardness on the drilling rig’s rotary system is considered for the first time,which is reflected in the numerical variation of load torque,and a dynamic model for the design of rotary speed controller is *** an LESO is designed to observe the load torque,and feedforward compensation is carried out to overcome the influence of coal seam *** on the model of the compensated system,a backstepping method is used to design a controller to achieve tracking control of the rotary ***,the effectiveness of the controller designed in this paper is demonstrated through simulation and field experiments,the steady-state error of the rotary speed in field is 1 r/min,and the overshoot is reduced to 5.8%.This greatly improves the stability and security,which is exactly what the drilling process requires.

关键词： Backstepping extended state observer hydraulic tunnel drilling machine rotary speed

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Overview of Versatile Video Coding (H.266/VVC) and Its Coding Performance Analysis

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IEIE Transactions on Smart Processing and Computing 2023年第2期12卷 122-154页

作者： Lee, Minhun Song, HyeonJu Park, Jeeyoon Jeon, Byeungwoo Kang, Jungwon Kim, Jae-Gon Lee, Yung-Lyul Kang, Je-Won Sim, Donggyu Department of Computer Engineering Kwangwoon University Seoul Korea Republic of Department of Computer Engineering Sejong University Seoul Korea Republic of Department of Electrical and Computer Engineering Sungkyunkwan University Kyunggi-do Korea Republic of Communication and Media Research Laboratory Electronics and Telecommunications Research Institute Deajeon Korea Republic of School of Electronics and Information Engineering Korea Aerospace University Kyunggi-do Korea Republic of Department of Electronic and Electrical Engineering Graduate Program in Smart Factory Ewha Womans University Seoul Korea Republic of

Versatile Video Coding (H.266/VVC) is the newest video coding standard jointly developed by the Joint Video Experts Team (JVET), which is organized by the ITU-T Video Coding Experts Group (VCEG) and the ISO/IEC Moving Picture Experts Group (MPEG). H.266/VVC provides about 40% bitrate reduction compared with High Efficiency Video Coding (H.265/HEVC) for the same visual quality. This paper introduces in detail the core structure of H.266/VVC by highlighting its features within block partitioning structure, intra/inter prediction, transform, quantization, and in-loop filtering, compared to its predecessor (H.265/HEVC). H.266/VVC yields significantly improved the coding performance, but it increased the computational complexity, particularly for the encoder side, which remains a problem to be tackled for successful commercialization in the future. This paper examined the statistical performance of H.266/VVC coding tools from the bitstreams encoded by the VVC test model (VTM12.0) encoder through rate-distortion optimization under the JVET common test conditions. In addition, the complexity and performance analyses are conducted on the block partitioning structure and group of picture structure. It is expected that an optimized H.266/VVC encoder can be designed and developed by minimizing the coding loss based on the analysis data. © 2023 institute of Electronics and Information Engineers. All rights reserved.

关键词： Image compression

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Supremal and Robust Control against Actuator Jamming Attacks in Cyber-Physical systems

IEEE Transactions on Intelligent Vehicles

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IEEE Transactions on Intelligent Vehicles 2023年第9期9卷 1-13页

作者： Duo, Wenli Wang, Shouguang Zhou, MengChu You, Dan Wisniewski, Remigiusz Bazydlo, Grzegorz Albeshri, Aiiad Institute of Systems Engineering Macau University of Science and Technology Macau China School of Information and Electronic Engineering Zhejiang Gongshang University Hangzhou China Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA Institute of Control and Computation Engineering University of Zielona Góra Zielona Góra Poland Department of Computer Science King Abdulaziz University Jeddah Saudi Arabia

Cyber-physical systems, such as unmanned aerial vehicles and connected and autonomous vehicles, are vulnerable to cyber attacks, which can cause significant damage to society. This paper examines the attack issue in cyber-physical systems within the framework of discrete event systems. Specifically, we consider a scenario where a malicious intruder injects a jamming signal into an actuator channel. It disrupts the transmission of control commands and prevents an actuator from receiving them. This is termed an actuator jamming attack. In the paper, we first analyze the closed-loop system behavior under such an attack. An attack structure is constructed to illustrate how an intruder exploits a jamming attack to drive a system into unsafe states. Then, we study the supervisory control problem for a system exposed to such an attack. The problem is reduced to a basic supervisory control one in discrete event systems by introducing the concept of dynamically controllable language. A solution to this problem is explored, where we establish an existence condition for a supremal and robust supervisor that is capable of defending against actuator jamming attacks, and design an algorithm to derive it. Finally, the effectiveness of our method is illustrated by an intelligent automated guided vehicle system. IEEE

关键词： Discrete event simulation

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Self-Powered Absorptive Reconfigurable Intelligent Surfaces for Securing Satellite-Terrestrial Integrated Networks

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China Communications 2024年第9期21卷 276-291页

作者： Lin Zhi Niu Hehao He Yuanzhi An Kang Zhong Xudong Chu Zheng Xiao Pei College of Electronic Engineering National University of Defense TechnologyHefei 230037China Sixty-Third Research Institute National University of Defense TechnologyNanjing 210007China Institute of Systems Engineering Academy of Military ScienceBeijing 100141China Department of Electrical and Electronic Engineering University of Nottingham Ningbo ChinaNingbo 315100China Institute for Communication Systems University of SurreyGuildford GU27XHU.K.

Satellite communications have attracted significant interests due to its advantages of large footprint and massive ***,the commonly used onboard beamforming is hard to achieve reliable security because of the highly correlated legitimate and wiretap downlink *** exploit the benefits of satellite-terrestrial integrated network(STIN)and a novel absorptive reconfigurable intelligent surface(RIS)for improving the security of satellite downlink communications(SDC)in the presence of eavesdroppers(Eves).This paper aims to maximize the achievable secrecy rate of the earth station(ES)while satisfying the signal reception constraints,harvested power threshold at the RIS,and total transmit power *** solve this nonconvex problem,we propose a penalty-function based dual decomposition scheme,which firstly transforms the original problem into a two-layer optimization ***,the outer layer and inner problems are solved by utilizing the successive convex approximation,Lagrange-dual and Rayleigh quotient methods to obtain the beamforming weight vectors and the reflective coefficient ***,simulation results verify the effectiveness of the proposed scheme for enhancing the SDC security.

关键词： absorptive RIS beamforming design secure communications STIN

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A Novel Linguistic Relational Fuzzy C-Means

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IEEE Access 2025年 13卷 89332-89342页

作者： Phaknonkul, Peerawich Auephanwiriyakul, Sansanee Theera-Umpon, Nipon Chiang Mai University Faculty of Engineering Department of Computer Engineering Chiang Mai50200 Thailand Chiang Mai University Biomedical Engineering and Innovation Research Center Biomedical Engineering Institute Chiang Mai50200 Thailand Chiang Mai University Faculty of Engineering Department of Electrical Engineering Chiang Mai50200 Thailand

In real-world applications, sometimes there are uncertainties in the data sets whether from the collection process or from the natural languages. Moreover, the data may come in the form of fuzzy relation. To analyze data, one might use one of popular tools, i.e., a clustering method. There are several types of clustering including clustering on information from objects themselves or clustering on a relational data. Currently, there are few researches on a fuzzy data clustering and a fuzzy relational data clustering. However, those algorithms are either defuzzifying the data or the relation of the data before implementing the clustering Therefore, in this paper, we develop a linguistic relational fuzzy C-means (LRFCM) that works with fuzzy relation of vectors of fuzzy numbers directly. The algorithm is an extension of the regular relational fuzzy C-means (RFCM). The proposed algorithm does not defuzzify fuzzy attributes beforehand. We found that the results from the LRFCM are similar to that from the RFCM. However, the results from the LRFCM can provide information that contains all the uncertainties from the inputs while the RFCM cannot. We also compare the results with the fuzzy C-means clustering. These comparisons show that the LRFCM behaves the same way as the RFCM and the FCM in partitioning the input space into clusters. © 2013 IEEE.

关键词： Fuzzy clustering

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A Novel Scheme Based on Optimization for Controlling the Speed of PMBLDC Motor 9

A Novel Scheme Based on Optimization for Controlling the Spe...

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9th IEEE International Symposium on Smart Electronic systems, iSES 2023

作者： Baidya, Dayarnab Dhopte, Shreya Bhattacharjee, Mitradip Indian Institute of Science Education & Research Bhopal Electrical Engineering & Computer Science MP Bhopal462066 India

ISBN: (纸本)9798350383249

This study employs an innovative PID controller based on optimization to regulate the speed of a Permanent Magnet Brushless DC (PMBLDC) motor. Utilizing Energy Valley Optimizer (EVO), the PID controller is optimized. Popular motor types include PMBLDC motors, which are inexpensive and simple to assemble. The PID controller's high usability is attributable to its straightforward construction and reliable operation. However, tuning the PID controller's parameters is time-consuming, and sometimes, optimal value finding becomes more challenging. So, an error remains between the setpoint and the obtained output signal. The motor's speed is regulated by utilising a novel controller, the EVO-PID controller. The results from the suggested controller are compared to other reported controllers. It is seen from the simulations that the new controller performs better than other controllers. © 2023 IEEE.

关键词： Controllers

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