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Computational Intelligence for Energy, Transport and Environmental Sustainability (CIETES Companion), IEEE Symposia on

作者： Ali Arzani Ganesh K. Venayagamoorthy Holcombe Department of Electrical and Computer Engineering Real-Time Power and Intelligent Systems Laboratory Clemson University SC USA Department of Electrical Electronic and Computer Engineering University of Pretoria South Africa

ISBN: (数字)9798331519681

ISBN: (纸本)9798331519698

Seamless operation of PV plants during both transient and dynamic conditions is imperative for all stakeholders including energy control centers. Fast and dampened transient response, low steady-state error, and stability are sought for power system operation with PV plants. For PV power perturbation at point of interconnection (POI), this can be further supported by deploying auxiliary fast-acting non-synchronous generation such as SmartParks (SPs). SmartParks are parking lots with a large number of electric vehicles performing bidirectional power transfers, namely, vehicle-to-grid and grid-to-vehicle. In this study, a data-driven adaptive frequency controller (DD-AFC) was developed for SPs to compensate for frequency perturbations at PV-POI. The DD-AFC was incorporated into the controller of SPs to provide a fast response for frequency perturbations caused by PV-site power perturbations. The adaptiveness of the frequency droop comes from data-driven empirical characterization of the PV plant operation at the PV-site location using time-series data analytics. The DD-AFC supports fast-frequency control response by SPs for mitigating fast power perturbation at PV-POIs. The effectiveness of the DD-AFC was illustrated via real-time simulations of a bulk power system with a 210MW p PV plant and 100MW p of SmartParks in RTDS.

关键词： Automatic frequency control Time-frequency analysis Vehicle-to-grid Transient response Data analysis Perturbation methods Power system stability Adaptive control Transient analysis Vehicle dynamics

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Pushing AI to wireless network edge: an overview on integrated sensing, communication, and computation towards 6G

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Science China(Information Sciences) 2023年第3期66卷 7-25页

作者： Guangxu ZHU Zhonghao LYU Xiang JIAO Peixi LIU Mingzhe CHEN Jie XU Shuguang CUI Ping ZHANG Shenzhen Research Institute of Big Data Future Network of Intelligence Institute (FNii) The Chinese University of Hong Kong (Shenzhen) School of Science and Engineering (SSE) The Chinese University of Hong Kong (Shenzhen) State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Peking University Department of Electrical and Computer Engineering and Institute for Data Science and Computing University of Miami Peng Cheng Laboratory State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications

Pushing artificial intelligence(AI) from central cloud to network edge has reached board consensus in both industry and academia for materializing the vision of artificial intelligence of things(AIoT) in the sixth-generation(6G) era. This gives rise to an emerging research area known as edge intelligence, which concerns the distillation of human-like intelligence from the vast amount of data scattered at the wireless network edge. Typically, realizing edge intelligence corresponds to the processes of sensing, communication,and computation, which are coupled ingredients for data generation, exchanging, and processing, ***, conventional wireless networks design the three mentioned ingredients separately in a task-agnostic manner, which leads to difficulties in accommodating the stringent demands of ultra-low latency, ultra-high reliability, and high capacity in emerging AI applications like auto-driving and metaverse. This thus prompts a new design paradigm of seamlessly integrated sensing, communication, and computation(ISCC) in a taskoriented manner, which comprehensively accounts for the use of the data in downstream AI tasks. In view of its growing interest, this study provides a timely overview of ISCC for edge intelligence by introducing its basic concept, design challenges, and enabling techniques, surveying the state-of-the-art advancements, and shedding light on the road ahead.

关键词： sixth-generation (6G) edge intelligence artificial intelligence of things (AIoT) integrated sensing communication and computation (ISCC)

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Combined Split Manufacturing and Logic Obfuscation Based on Emerging Technologies at High Level for Secure 3D IC design

Combined Split Manufacturing and Logic Obfuscation Based on ...

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Midwest Symposium on Circuits and systems (MWSCAS)

作者： Haimanti Chakraborty Ranga Vemuri Electrical and Computer Engineering Department Digital Design Environments Laboratory University of Cincinnati Cincinnati Ohio USA

ISBN: (数字)9798350387179

ISBN: (纸本)9798350387186

Split Manufacturing (SM) and Logic Obfuscation (LO) are potent design-for-trust solutions to mitigate hardware security threats when fabricating Integrated Circuits (ICs) at untrusted foundries. However, many such defense methods are subject to attacks such as Network Flow Attack and Boolean Satisfiability Attack, that have attempted to reconstruct the missing BEOL (Back End Of Line) signals and decrypt the design. Hence, it is crucial to select BEOL signals carefully. Although several defense strategies have been proposed to protect the design against the attacks, many have been implemented at lower abstraction levels that incur expensive re-synthesis cycles. In this paper, we combine SM and LO for enhanced security of 3D ICs by proposing a BEOL signal selection method at high level based on assigning edge-weights to prioritize Data Flow Graph edges, that also identify locations for Polymorphic Switch Boxes (PSBs) for LO. A PSB has more key-bit combinations compared to a CMOS SB for an attacker to correctly unlock it. Our method decreases attack correctness with increase in the percentage of edges lifted and has minimal impact on design performance in terms of area and wirelength.

关键词： Three-dimensional displays Circuits and systems Hardware security Switches Foundries Manufacturing Logic

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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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Impedance Estimation at Multi-Antenna Receivers 57

Impedance Estimation at Multi-Antenna Receivers

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57th Annual Conference on Information Sciences and systems, CISS 2023

作者： Wu, Shaohan Hughes, Brian L. MediaTek Usa Inc. Department of Communication Systems Design IrvineCA92618 United States North Carolina State University Department of Electrical and Computer Engineering RaleighNC27695-7911 United States

ISBN: (纸本)9781665451819

This paper considers antenna impedance matrix estimation using training sequences at multi-antenna receivers. We formulate this problem in a classical estimation framework, treating the unknown channel matrix as a nuisance parameter. The maximum-likelihood impedance estimator is derived as a function of the top block eigenvector of the sample covariance matrix in i.i.d. Rayleigh fading channels. Fundamental lower bounds, e.g., Cramér-Rao bounds and Miller-Chang bounds, on these estimators are derived, the latter of which better predicts the ML estimator's behavior using numerical simulations. Another finding is that transmit diversity may lead to diminishing returns if the total transmitted power is the constraint. © 2023 IEEE.

关键词： Covariance matrix

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RTL Interconnect Obfuscation By Polymorphic Switch Boxes For Secure Hardware Generation

RTL Interconnect Obfuscation By Polymorphic Switch Boxes For...

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IEEE International Symposium on Quality Electronic design

作者： Haimanti Chakraborty Ranga Vemuri Electrical and Computer Engineering Department Digital Design Environments Laboratory University of Cincinnati Cincinnati Ohio USA

ISBN: (数字)9798350309270

ISBN: (纸本)9798350309287

Logic Obfuscation is a well renowned design-for-trust solution to protect an Integrated Circuit (IC) from unauthorized use and illegal overproduction by including key-gates to lock the design. This is particularly necessary for ICs manufactured at untrusted third-party foundries getting exposed to security threats. In the past, several logic obfuscation methodologies have been proposed that are vulnerable to attacks such as the Boolean Satisfiability Attack. Many of these techniques are implemented at the gate level that may involve expensive re-synthesis cycles. In this paper, we present an interconnect obfuscation scheme at the Register-Transfer Level (RTL) using Switch Boxes (SBs) constructed of Polymorphic Transistors. A polymorphic SB can be designed using the same transistor count as its Complementary-Metal-Oxide-Semiconductor based counterpart, thereby no increased area in comparison, but serving as an advantage in having more key-bit combinations for an attacker to correctly identify and unlock each polymorphic SB. Security-aware high-level synthesis algorithms have also been presented to increase RTL interconnects to Functional Units impacting multiple outputs such that when a polymorphic SB is strategically inserted, those outputs would be corrupted upon incorrect keybit identification. Finally, we run the SMT (Satisfiability Modulo Theories)-based RTL Logic Attack on the obfuscated design to examine its robustness.

关键词： Job shop scheduling Integrated circuit interconnections Switches Logic gates Robustness Hardware Transistors

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ROBUST: RTL OBfuscation USing Bi-functional Polymorphic OperaTors

ROBUST: RTL OBfuscation USing Bi-functional Polymorphic Oper...

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International Conference on VLSI design

作者： Haimanti Chakraborty Ranga Vemuri Electrical and Computer Engineering Department Digital Design Environments Laboratory University of Cincinnati Cincinnati Ohio USA

Manufacturing Integrated Circuits (ICs) at untrusted third-party foundries has introduced security vulnerabilities. Logic Obfuscation is a well known design-for-trust solution that can prevent unauthorized use and overproduction of ICs by means of adding extra key-gates to lock the design. Several logic locking techniques proposed in the past have incurred performance overheads and are vulnerable to attacks such as the Boolean Satisfiability Attack. Many of these logic obfuscation methodologies have been implemented at the gate level that may involve expensive re-synthesis cycles. In this paper, we propose a logic obfuscation scheme at the Register-Transfer Level (RTL) by using bi-functional polymorphic logic gates to construct the Functional Units (FUs) of operation, and the proposed technique does not increase the area overhead significantly. A bi-functional FU is capable of saving resources by computing more than one ALU (Arithmetic-Logic Unit) operation by itself and also helps increase confusion for an attacker to identify which interconnections would belong to which operator of the bi-functional FU. Security-aware high-level synthesis algorithms have also been presented to allocate Data Flow Graph nodes to the polymorphic FUs. Additionally, we include a multiplier block in a polymorphic FU for increased robustness against the SMT (Satisfiability Modulo Theories)-based RTL Logic Attack.

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Programmable photonic unitary circuits for light computing

arXiv

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arXiv 2024年

作者： Kim, Kyuho Park, Kunwoo Park, Hyungchul Yu, Sunkyu Park, Namkyoo Piao, Xianji Intelligent Wave Systems Laboratory Department of Electrical and Computer Engineering Seoul National University Seoul08826 Korea Republic of Photonic Systems Laboratory Department of Electrical and Computer Engineering Seoul National University Seoul08826 Korea Republic of Wave Engineering Laboratory School of Electrical and Computer Engineering University of Seoul Seoul02504 Korea Republic of

Unitarity serves as a fundamental concept for characterizing linear and conservative wave phenomena in both classical and quantum systems. Developing platforms that perform unitary operations on light waves in a universal and programmable manner enables the emulation of complex light-matter interactions and the execution of general-purpose functionalities for wave manipulations, photonic computing, and quantum circuits. Recently, numerous approaches to implementing programmable photonic unitary circuits have been proposed and demonstrated, each employing different design strategies that distinctly impact overall device performance. Here, we review foundational design principles and recent achievements in the implementation of programmable photonic unitary circuits, with a particular focus on integrated photonic platforms. We classify the design strategies based on the dimensionality of nontrivial unit operations in their building blocks: lower-dimensional unitary units, such as SU(2) operations, and higher-dimensional ones, such as Fourier transforms. In each category, recent efforts to leverage alternative physical axes, such as the temporal and frequency domains, to address scalability challenges are also reviewed. We discuss the underlying concepts, design procedures, and trade-offs of each design strategy, especially in relation to light-based computing. © 2024, CC BY.

关键词： Photonic integrated circuits

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The ChatGPT After: Building Knowledge Factories for Knowledge Workers with Knowledge Automation

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IEEE/CAA Journal of Automatica Sinica 2023年第11期10卷 2041-2044页

作者： Yutong Wang Xiao Wang Xingxia Wang Jing Yang Oliver Kwan Lingxi Li Fei-Yue Wang State Key Laboratory for Management and Control of Complex Systems Chinese Academy of SciencesBeijing 100190China School of Artificial Intelligence Anhui UniversityHefei 230039China Motion G Inc068898Singapore Department of Electrical and Computer Engineering Purdue School of Engineering and TechnologyIndiana University-Purdue University IndianapolisIndiana 46202-5132 USA IEEE

Briefing: This perspective introduces the concept and framework of knowledge factories with knowledge machines for knowledge workers to achieve knowledge automation for Industry 5.0 and intelligent *** The big hit of Chat GPT makes it imperative to contemplate the practical applications of big or foundation models [1]-[5]. However, as compared to conventional models, there is now an increasingly urgent need for foundation intelligence of foundation models for real-world industrial applications.

关键词： Automation template Chat GPT

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Volumetric B1+ field homogenization in 7 Tesla brain MRI using metasurface scattering

arXiv

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arXiv 2024年

作者： Yoon, Gyoungsub Yu, Sunkyu Lee, Jongho Park, Namkyoo Photonic Systems Laboratory Department of Electrical and Computer Engineering Seoul National University Seoul08826 Korea Republic of Intelligent Wave Systems Laboratory Department of Electrical and Computer Engineering Seoul National University Seoul08826 Korea Republic of Laboratory for Imaging Science and Technology Department of Electrical and Computer Engineering Seoul National University Seoul Korea Republic of

Ultrahigh field magnetic resonance imaging (UHF MRI) has become an indispensable tool for human brain imaging, offering excellent diagnostic accuracy while avoiding the risks associated with invasive modalities. When the radiofrequency magnetic field of the UHF MRI encounters the multifaceted complexity of the brain—characterized by wavelength-scale, dissipative, and random heterogeneous materials—detrimental mesoscopic challenges such as B1+ field inhomogeneity and local heating arise. Here we develop the metasurface design inspired by scattering theory to achieve the volumetric field homogeneity in the UHF MRI. The method focuses on finding the scattering ansatz systematically and incorporates a pruning technique to achieve the minimum number of participating modes, which guarantees stable practical implementation. Using full-wave analysis of realistic human brain models under a 7 Tesla MRI, we demonstrate more than a twofold improvement in field homogeneity and suppressed local heating, achieving better performance than even the commercial 3 Tesla MRI. The result shows a noninvasive generalization of constant intensity waves in optics, offering a universal methodology applicable to higher Tesla MRI. © 2024, CC BY.

关键词： Magnetic resonance imaging

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