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H∞ State Estimation for Stochastic Jumping Neural Networks with Fading Channels Over a Finite-Time Interval

Neural Processing Letters 2019年第1期50卷 1-18页

作者： Shen, Liang Shen, Hao Gao, Mingming Liu, Yajuan Huang, Xia School of Electrical and Information Engineering Anhui University of Technology Ma’anshan243002 China School of Metallurgical Engineering Anhui University of Technology Ma’anshan243002 China The State Key Laboratory of Alternate Electric Power System with Renewable Energy Sources North China Electric Power University Beijing102206 China School of Control and Computer Engineering North China Electric Power University Beijing102206 China College of Electrical Engineering and Automation Shandong University of Science and Technology Qingdao266590 China

In the work, a class of Markov jump neural networks in the discrete-time domain with fading channels are taken into account. The main aim is to investigate the H∞ state estimation issue when the Rice fading occurs in measured networks. In the first place, the analyses of the finite-time boundedness and the H∞ performance for the estimation error system with the aid of finite-time stability theory are presented. Some conditions which guarantee the solvability of the addressed problem are established. Furthermore, by applying an unique decoupling method, the gains of the presented estimator are obtained under the feasible solutions of the conditions derived before. Finally, the validity of the presented approach is verified by a numerical example. © 2018, Springer science+Business Media, LLC, part of Springer Nature.

关键词： State estimation

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Event-Triggered control for Consensus of Multi-Agent Systems with Nonlinear Output and Directed Topologies

Event-Triggered Control for Consensus of Multi-Agent Systems...

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第三十八届中国控制会议

作者： Xinlei Yi Shengjun Zhang Tao Yang Junfeng Wu Karl H.Johansson School of Electrical Engineering and Computer Science KTH Royal Institute of Technology The Department of Electrical Engineering University of North Texas The College of Control Science and Engineering Zhejiang University

We propose a distributed event-triggered control law to solve the consensus problem for multi-agent systems with nonlinear output. Under the condition that the underlying digraph is strongly connected, we establish sufficient conditions on the nonlinear output function and initial states to guarantee that the event-triggered controller realizes consensus. Then the results are extended to the case where the underlying directed graph contains a directed spanning tree. These theoretical results are illustrated by numerical simulations.

关键词： Consensus Event-triggered control Multi-agent systems Nonlinear output

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control processes in mechatronic systems with friction: Research and modeling 10

Control processes in mechatronic systems with friction: Rese...

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10th International Scientific Conference BALTTRIB 2019

作者： Malafeev, S.I. Malafeev, S.S. Kopeykin, A.I. Department of Science Research Joint Power Co. Ltd. Moscow Russia Department of Computer Engineering and Control Systems Vladimir State University named after Alexander and Nikolay Stoletovs Vladimir Russia Vladimir Polytechnic College Vladimir Russia

Effect of friction on the motion control processes in mechatronic systems is considered. The analysis of modern friction modeling methods is carried out. Features of processes at low speeds: accuracy, oscillations and stability have been studied on base of macroscopic models of friction. Friction in the mechatronic system causes the formation of complex nonlinear speed feedback, which depends on many factors and has different signs at different speeds. Oscillations and a violation of the stability of the system are possible with positive feedback at low speed. The conditions of stable operation under frictional load for a DC motor are derived. Correction methods for mechatronic systems with friction are considered. Effective control in mechatronic systems achieve using the principle of subordinate coordinate control. The results of modeling systems with the main feedback on the angular speed and angle of rotation are presented. Copyright © 2019 The Authors.

关键词： Friction

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The 2024 Active Metamaterials Roadmap

arXiv

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arXiv 2024年

作者： Pope, Simon A. Roth, Diane J. Bansal, Aakash Mousa, Mostafa Rezanejad, Ashkan Forte, Antonio E. Nash, Geoff.R. Singleton, Lawrence Langfeldt, Felix Cheer, Jordan Henthorn, Stephen Hooper, Ian R. Hendry, Euan Powell, Alex W. Souslov, Anton Plum, Eric Sun, Kai de Groot, C.H. Muskens, Otto L. Shields, Joe De Galarreta, Carlota Ruiz Wright, C. David Kocabas, Coskun Ergoktas, M. Said Xiao, Jianling Schulz, Sebastian A. Di Falco, Andrea Krasavin, Alexey V. Zayats, Anatoly V. Galiffi, Emanuele Department of Automatic Control and Systems Engineering The University of Sheffield Amy Johnson Building Portobello Street SheffieldS1 3JD United Kingdom Department of Physics London Centre for Nanotechnology King’s College London Strand WC2R 2LS United Kingdom Wolfson School of Mechanical Electrical and Manufacturing Engineering Loughborough University United Kingdom Department of Engineering King’s College London LondonWC2R 2LS United Kingdom Natural Sciences University of Exeter Harrison Building North Park Road Exeter United Kingdom Institute of Sound & Vibration Research University of Southampton University Road Southampton United Kingdom Department of Electronic and Electrical Engineering University of Sheffield Sheffield United Kingdom Centre for Metamaterial Research and Innovation University of Exeter Stoker Road ExeterEX4 4QL United Kingdom T.C.M. Group Cavendish Laboratory University of Cambridge CambridgeCB3 0HE United Kingdom Optoelectronics Research Centre Centre for Photonic Metamaterials University of Southampton Highfield SouthamptonSO17 1BJ United Kingdom School of Physics and Astronomy University of Southampton Southampton United Kingdom Electronics and Computer Science University of Southampton Southampton United Kingdom Institute of Materials Science of Barcelona Universitat Autònoma de Barcelona Bellaterra Barcelona08193 Spain Department of Materials National Graphene Institute University of Manchester United Kingdom Schoolof Physics and Astronomy University of St Andrews North Haugh Fife St. AndrewsKY16 9SS United Kingdom Department of Electrical and Computer Engineering University of Waterloo 200 University Avenue West WaterlooONN2L 3G1 Canada Photonics Initiative Advanced Science Research Centre City University of New York 85 St. Nicholas Terrace New YorkNY10027 United States

Active metamaterials are engineered structures that possess novel properties that can be changed after the point of manufacture. Their novel properties arise predominantly from their physical structure, as opposed to their chemical composition and can be changed through means such as direct energy addition into wave paths, or physically changing/morphing the structure in response to both a user or environmental input. Active metamaterials are currently of wide interest to the physics community and encompass a range of sub-domains in applied physics (e.g. photonic, microwave, acoustic, mechanical, etc.). They possess the potential to provide solutions that are more suitable to specific applications, or which allow novel properties to be produced which cannot be achieved with passive metamaterials, such as time-varying or gain enhancement effects. They have the potential to help solve some of the important current and future problems faced by the advancement of modern society, such as achieving net-zero, sustainability, healthcare and equality goals. Despite their huge potential, the added complexity of their design and operation, compared to passive metamaterials creates challenges to the advancement of the field, particularly beyond theoretical and lab -based experiments. This roadmap brings together experts in all types of active metamaterials and across a wide range of areas of applied physics. The objective is to provide an overview of the current state of the art and the associated current/future challenges, with the hope that the required advances identified create a roadmap for the future advancement and application of this field. Copyright © 2024, The Authors. All rights reserved.

关键词： Microwave acoustics

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Think That Attackers Think: Using First-order Theory of Mind in Intrusion Response System

Think That Attackers Think: Using First-order Theory of Mind...

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IEEE Global Communications Conference

作者： Qiumei Cheng Chunming Wu Bin Hu Dezhang Kong Boyang Zhou College of Computer Science and Technology Zhejiang University Hangzhou China Zhejiang Lab Hangzhou China College of Control Science and Engineering Zhejiang University Hangzhou China

ISBN: (数字)9781728109626

ISBN: (纸本)9781728109633

The intrusion response system is dedicated to automatically respond to sophisticated network intrusions, which is a sequential decision-making problem for autonomous agents. The current Markov decision process (MDP) or stochastic games based solutions suffer from several weaknesses: (i) The MDP-based approach is unable to explicitly model the opponents;(ii) The Nash equilibrium approach of stochastic games cannot handle the condition with multi equilibria. Existing studies have not considered the cognitive ability of the agent and lack of explicit opponent modeling. Inspired by recursive reasoning, this paper introduces a theory of mind (ToM)-based stochastic game-theoretic approach to reason about the beliefs and behaviors of the attackers. Each agent maintains different order ToM beliefs concerning his opponent with explicit opponent modeling. In order to accurately predict the attacker's action with nested beliefs, we utilize the Bayesian attack graph (BAG) to model multi-step attacks scenarios. In addition, the agent is allowed to learn from new information to adjust his beliefs and learning speed. Simulation results validate that ToM modeling performs well in the intrusion response system than random defense actions. Besides, a defender with first-order ToM beliefs always wins an attacker with zero-order ToM beliefs.

关键词： Games Bayes methods Stochastic processes Predictive models Game theory Measurement

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Wide-angle giant photonic spin Hall effect

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Physical Review B 2022年第7期106卷 075409-075409页

作者： Zhihao Chen Yu Chen Yaodong Wu Xinxing Zhou Handong Sun Tony Low Hongsheng Chen Xiao Lin Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Synergetic Innovation Center for Quantum Effects and Applications School of Physics and Electronics Hunan Normal University Changsha 410081 China International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology Engineering Technology Research Center for 2D Material Information Function Devices and Systems of Guangdong Province Institute of Microscale Optoelectronics Shenzhen University Shenzhen 518060 China Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore Centre for Disruptive Photonic Technologies (CDPT) School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore Department of Electrical and Computer Engineering University of Minnesota Minneapolis Minnesota 55455 USA Interdisciplinary Center for Quantum Information State Key Laboratory of Modern Optical Instrumentation ZJU-Hangzhou Global Scientific and Technological Innovation Center College of Information Science and Electronic Engineering Zhejiang University Hangzhou 310027 China International Joint Innovation Center ZJU-UIUC Institute The Electromagnetics Academy at Zhejiang University Zhejiang University Haining 314400 China

The photonic spin Hall effect is a manifestation of the spin-orbit interaction of light and can be measured by a transverse shift δ of photons with opposite spins. The precise measurement of transverse shifts can enable many spin-related applications, such as precise metrology and optical sensing. However, this transverse shift is generally small (i.e., δ/λ<10−1, where λ is the wavelength), which impedes its precise measurement. To date, proposals to generate a giant spin Hall effect (namely, with δ/λ>102) have severe limitations, particularly its occurrence only over a narrow angular cone (with a width of Δθ<1∘). Here we propose a universal scheme to realize the wide-angle giant photonic spin Hall effect with Δθ>70∘ by exploiting the interface between free space and uniaxial epsilon-near-zero media. The underlying mechanism is ascribed to the almost-perfect polarization splitting between s and p polarized waves at the designed interface. Remarkably, this almost-perfect polarization splitting does not resort to the interference effect and is insensitive to the incident angle, which then gives rise to the wide-angle giant photonic spin Hall effect.

关键词： Light-matter interaction Photonics Spin Hall effect Spin-orbit coupling

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麻醉与意识的脑网络研究进展——框架与临床应用（英文）

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engineering 2023年第1期 77-95页

作者：刘军董康立孙毅 Ioannis Kakkos 黄帆王国正齐鹏陈星张德林 Anastasios Bezerianos 孙煜 Key Laboratory for Biomedical Engineering of Ministry of Education of China Zhejiang University Department of Neurology Sir Run Run Shaw Hospital School of Medicine Zhejiang University School of Electrical and Computer Engineering National Technical University of Athens Department of Control Science and Engineering College of Electronics and Information Engineering Tongji University Department of Anesthesiology The First Affiliated Hospital School of Medicine Zhejiang University The N1 Institute for Health Center for Life Sciences National University of Singapore

尽管麻醉与意识之间的关系一直是研究者关注的重点，但目前学界对于麻醉与意识的神经机制理解仍处在初级阶段，极大地限制了麻醉监测和意识评估系统的进一步发展。此外，现有麻醉监测方法难以提供足够的有效信息，对精准麻醉监测的目标...

尽管麻醉与意识之间的关系一直是研究者关注的重点，但目前学界对于麻醉与意识的神经机制理解仍处在初级阶段，极大地限制了麻醉监测和意识评估系统的进一步发展。此外，现有麻醉监测方法难以提供足够的有效信息，对精准麻醉监测的目标构成了障碍。近年来，使用脑网络分析揭示麻醉机制已成为研究热点，其目的是为临床应用提供新的研究思路。针对这一新的研究趋势，本文全面回顾了麻醉相关脑网络研究的最新进展，系统地比较了麻醉和意识的几种潜在的神经机制以及不同层面大脑神经活动的测量方法；从皮层碎片化理论出发，介绍了连通性和网络分析的一些重要的研究方法和相关成果；在总结归纳现有研究成果的基础上，论证了全脑多模态网络数据可以提供现有麻醉监测方法所无法提供的信息；更重要的是，进一步提出简化脑网络分析方法的可行性，这一方法将会在优化现有的临床麻醉监测系统中发挥重要作用。

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Culture versus Policy: More Global Collaboration to Effectively Combat COVID-19

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The Innovation 2020年第2期1卷 15-16页

作者： Jianping Li Kun Guo Enrique Herrera Viedma Heesoek Lee Jiming Liu Ning Zhong Luiz Flavio Autran Monteiro Gomes Florin Gheorghe Filip Shu-Cherng Fang Mujgan SagirÖzdemir Xiaohui Liu Guoqing Lu Yong Shi School of Economics and Management University of Chinese Academy of SciencesBeijing 100190China Key Laboratory of Big Data Mining and Knowledge Management Chinese Academy of SciencesBeijing 100190China Research Center on Fictitious Economy&Data Science Chinese Academy of SciencesBeijing 100190China Department of Computer Science and Artificial Intelligence E.T.S.de Ingenieria Informatica y de TelecomunicacionesUniversity of Granada18071 GranadaSpain Department of Information Management Korea Advanced Institute of Science and TechnologySeoul 207-43 Korea Department of Computer Science and HKBU-CSD&NIPD Joint Research Laboratory for Intelligent Disease Surveillance and Control Hong Kong Baptist UniversityHong KongChina Department of Life Science and Informatics Maebashi Institute of TechnologyMaebashi 371-0816Japan Ibmec University Center Av.Presidente Wilson118Office#111020030-020 Rio de JaneiroBrazil The Romanian Academy Bucharest010071Romania Industrial and Systems Engineering Department North Carolina State UniversityRaleighNC 27695USA Department of Industrial Engineering Eskisehir Osmangazi University26480 EskisehirTurkey Department of Computer Science Brunel University LondonLondonUB83PHUK Department of Biology and School of Interdisciplinary Informatics University of Nebraska at OmahaOmahaNE 68182USA College of Information Science and Technology University of Nebraska at OmahaOmahaNE 68182USA

The outbreak of COVID-19 seriously challenges every government with regard to capacity and management of public health systems facing the catastrophic *** and anti-epidemic policy do not necessarily conflict with each *** countries and governments should be more tolerant to each other in seeking cultural and political consensus to overcome this historically tragic pandemic together.

关键词： seeking overcome policy

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Two-line graphs of partial Latin rectangles

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Electronic Notes in Discrete Mathematics 2018年 68卷 53-58页

作者： Danan, Eiran Falcón, Raúl M. Kotlar, Dani Marbach, Trent G. Stones, Rebecca J. Department of Computer Science Tel-Hai College Upper Galilee Israel School of Building Engineering Universidad de Sevilla Sevilla Spain College of Computer and Control Engineering Nankai University Tianjin China

Two-line graphs of a given partial Latin rectangle are introduced as vertex-and-edge-coloured bipartite graphs that give rise to new autotopism invariants. They reduce the complexity of any currently known method for ... 详细信息

关键词： adequate partition autotopism group entry invariant partial Latin rectangle

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On the performance of dual-hop systems over mixed FSO/mmWave fading channels

arXiv

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arXiv 2020年

作者： Zhang, Yan Zhang, Jiayi Yang, Liang Ai, Bo Alouini, Mohamed-Slim School of Electronic and Information Engineering Beijing Jiaotong University Beijing100044 China College of Computer Science and Electronic Engineering Hunan University Changsha410082 China State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing100044 China Thuwal Makkah Province Saudi Arabia

Free-space optical (FSO) links are considered as a cost-efficient way to fill the backhaul/fronthaul connectivity gap between millimeter wave (mmWave) access networks and optical fiber based central networks. In this paper, we investigate the end-to-end performance of dual-hop mixed FSO/mmWave systems to address this combined use. The FSO link is modeled as a Gamma-Gamma fading channel using both heterodyne detection and indirect modulation/direct detection with pointing error impairments, while the mmWave link experiences the fluctuating two-ray fading. Under the assumption of both amplify-and-forward and decode-and-forward relaying, we derive novel closed-form expressions for the outage probability, average bit error probability (BER), ergodic capacity, effective capacity in terms of bivariate Fox’s H-functions. Additionally, we discuss the diversity gain and provide other important engineering insights based on the high signal-to-noise-ratio analysis of the outage probability and the average BER. Finally, all our analytical results are verified using Monte Carlo simulations. Copyright © 2020, The Authors. All rights reserved.

关键词： Millimeter waves

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