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arXiv 2024年

作者： Xia, Kun Duch, Wlodzislaw Sun, Yu Xu, Kedi Fang, Weili Luo, Hanbin Zhang, Yi Sang, Dong Xu, Xiaodong Wang, Fei-Yue Wu, Dongrui The Ministry of Education Key Laboratory of Image Processing and Intelligent Control School of Artificial Intelligence and Automation Huazhong University of Science and Technology Wuhan430074 China Zhejiang Lab Hangzhou311121 China The Department of Informatics School of Physics Astronomy and Informatics Neurocognitive Laboratory Center for Modern Interdisciplinary Technologies Nicolaus Copernicus University Torun Poland The Ministry of Education Key Laboratory for Biomedical Engineering Zhejiang University Hangzhou China The Zhejiang University School of Medicine National Clinical Research Center for Child Health Hangzhou China Department of Biomedical Engineering Zhejiang University Hangzhou China The School of Civil and Hydraulic Engineering Huazhong University of Science and Technology Wuhan430074 China The College of Public Administration Huazhong University of Science and Technology Wuhan430074 China The NetsUnion Clearing Corporation Beijing100045 China The State Key Laboratory for Management and Control of Complex Systems Institute of Automation Chinese Academy of Sciences Beijing100049 China

A brain-computer interface (BCI) establishes a direct communication pathway between the human brain and a computer. It has been widely used in medical diagnosis, rehabilitation, education, entertainment, etc. Most research so far focuses on making BCIs more accurate and reliable, but much less attention has been paid to their privacy. Developing a commercial BCI system usually requires close collaborations among multiple organizations, e.g., hospitals, universities, and/or companies. Input data in BCIs, e.g., electroencephalogram (EEG), contain rich privacy information, and the developed machine learning model is usually proprietary. Data and model transmission among different parties may incur significant privacy threats, and hence privacy protection in BCIs must be considered. Unfortunately, there does not exist any contemporary and comprehensive review on privacy-preserving BCIs. This paper fills this gap, by describing potential privacy threats and protection strategies in BCIs. It also points out several challenges and future research directions in developing privacy-preserving BCIs. © 2024, CC BY.

关键词： Differential privacy

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Implementing Fractional PID control for MagLev with SoftFRAC

Implementing Fractional PID Control for MagLev with SoftFRAC

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International Conference on Telecommunications and Signal Processing (TSP)

作者： Waldemar Bauer Jerzy Baranowski Andrzej Tutaj Paweł Piątek Panagiotis Bertsias Stavroula Kapoulea Costas Psychalinos Department of Automatic Control and Robotics AGH University of Science and Technology Kraków Poland Department of Physics University of Patras Rio Patras Greece

ISBN: (数字)9781728163765

ISBN: (纸本)9781728163772

Nowadays, a realization of non-integer (fractional) order elements on a digital platform is a Widely researched problem. The theory of such dynamic components is relatively well grounded, however, many problems of implementation on a digital platform are still open. In this paper we consider real time fractional control of MagLev system. Classical methods of approximation and available toolboxes are unable to function in the fast discrete time environment. As a solution in this paper we use a novel library: SoftFRAC Which is dedicated for such control tasks. We illustrate library operation, controller design and present the application.

关键词： Frequency modulation

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Experimental study of core and edge fluctuations by reflectometry on EAST tokamak

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Plasma Science and technology 2021年第7期23卷 8-14页

作者： Zhen ZHOU Tao ZHANG Mingfu WU Kaixuan YE Fubin ZHONG Jia HUANG Kangning GENG Yukai LIU Gongshun LI Haoming XIANG Yumin WANG Fei WEN Sanqiu LIU Jiangxi Province Key Laboratory of Fusion and Information Control Institute of Fusion Energy and Plasma ApplicationDepartment of PhysicsNanchang UniversityNanchang 330031People’s Republic of China Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People’s Republic of China University of Science and Technology of China Hefei 230026People’s Republic of China Advanced Energy Research Center Shenzhen UniversityShenzhen 518060People’s Republic of China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Optoelectronic EngineeringShenzhen UniversityShenzhen 5180602People’s Republic of China

An eight-channel poloidal correlation reflectometer(PCR)with O-mode polarization has been installed in the EAST tokamak to measure the fluctuations from core to *** PCR launches eight different frequency microwaves(20.4,24.8,33,40,42.4,48,52.6,57.2 GHz)into the plasma from the low field side and two poloidally separated antennae are used to receive the reflected *** a result,the diagnostic can measure fluctuations in eight(radial)×two(poloidal)spatial *** diagnostic has been applied to study the core and edge pedestal fluctuations during an inter-ELM phase in H-mode *** inter-ELM phase can be divided into two *** the first stage,a low frequency(<50 kHz)broadband fluctuation dominates in the pedestal gradient *** the second stage,this fluctuation is strongly suppressed and quasi-coherent fluctuations(QCFs)*** QCF’s amplitude increases with the pedestal density gradient,implying density gradient driven *** the core fluctuations inside the pedestal show no evident changes during the inter-ELM phase.

关键词： core fluctuation edge fluctuation reflectometry

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Graph Optimization based Visual SLAM fusing KeyPoints and Markers

Graph Optimization based Visual SLAM fusing KeyPoints and Ma...

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Chinese control Conference (CCC)

作者： Zhen Chen Yang Zhou Fengdi Zhang Min Xu Xiangdong Liu Zhen Li School of Automation and Key Laboratory for Intelligent Control & Decision on Complex Systems Beijing Institute of Technology Beijing P. R. China Beijing Aerospace Automatic Control Institute P. R. China

ISBN: (数字)9789881563903

ISBN: (纸本)9781728165233

Simultaneous localization and mapping (SLAM) plays an important role in autonomous navigation for mobile robots. Most of the visual SLAM approaches use keypoints for tracking, whose performance however suffers from the unstable landmarks during task due to uncertain light condition and frequently changeable viewpoint. The situation even becomes worse for visual SLAM in low texture environment especially in indoor buildings, where the supplementary artificial markers can be used to improve the robust detection under a wider range of circumstances. Inspired by this thought, this paper developed a visual SLAM system integrated with keypoints and artificial markers. A graph optimization problem is constructed to optimize the trajectory by taking both the reprojection error of keypoints and the influence of markers into consideration. The experimental results on SPM dataset demonstrate the superior accuracy of the proposed graph optimization algorithm compared with the start-of-the-art ORB-SLAM2.

关键词： Cameras Jacobian matrices Simultaneous localization and mapping Optimization Visualization Trajectory

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Consensus Analysis of Multi-Agent systems with Uncertain Switching Topology in Finite Frequency Domain 7

Consensus Analysis of Multi-Agent Systems with Uncertain Swi...

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7th International Conference on Information, Cybernetics, and Computational Social systems, ICCSS 2020

作者： Xu, Nuo Zhu, Yanzheng Yang, Rongni Chen, Xinkai The College of Mechanical Engineering and Automation Huaqiao University Xiamen361021 China School of Control Science and Engineering Shandong University Jinan Shandong250061 China Shibaura Institute of Technology The Department of Electronic and Information Systems Saitama Japan

ISBN: (纸本)9781728162461

In this paper, the issue of consistency analysis is investigated for a class of multi-agent system (MAS) with time-varying delay and uncertain switching topology in finite frequency domain. The dynamic topology is represented by continuous Markov switching state. The frequency bands of external noise interference are divided into low frequency, medium frequency and high frequency. The noise interference information is fully utilized to guarantee the stability of MAS. At the same time, the affine Bessel-Legendre inequality method is used when carrying out the consistency analysis. The obtained results are represented as the form of linear matrices inequalities. Finally, a series of simulations are illustrated to show the effectiveness and applicability of developed approaches in this paper. © 2020 IEEE.

关键词： Multi agent systems

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Comparative Analysis of Android Mobile Forensics Tools

Comparative Analysis of Android Mobile Forensics Tools

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2020 IEEE Conference on Computer Applications, ICCA 2020

作者： Lwin, Htar Htar Aung, Wai Phyo Lin, Kyaw Kyaw University of Computer Studies Faculty of Computer Systems and Technologies Yangon Myanmar Moscow Automobile and Road Construction State Technical University Department of Automation Control System Russia Defence Services Academy Department of Computer Technology Pyin Oo Lwin Myanmar

ISBN: (纸本)9781728159256

This paper performs a comparative analysis of Android mobile forensics tools which are used for acquisition and analyzing of Android mobile devices. The major challenges of Android forensics investigation are manufacturing of Android devices with various operating system versions and there is no single tool which can be used for all sorts of Android devices. Aiming to overcome these challenges and increase more accuracy and integrity in Android forensic investigation, we made comparative analysis on both open source tools and one commercial tool. Logical and physical acquisition methods were utilized to acquire data from Android devices. Android Debug Bridge backup, Linux Data Duplicator utility tool, Magnet Acquire and Belkasoft Acquisition tools were used for acquisition. Two popular analyzing tools such as Autopsy and Belkasoft Evidence Center were utilized to analyze acquired data. The results show that using multiple tools can get more accuracy and integrity of artifacts which is forensically sound. © 2020 IEEE.

关键词： Android (operating system)

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Green roadmap choice for coupled system of power and urban heating: Quick win or long-term strategy?

Green roadmap choice for coupled system of power and urban h...

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2020 IEEE Power and Energy Society General Meeting, PESGM 2020

作者： Lin, Yisha Qiao, Ying Lu, Zongxiang Li, Jin Tsinghua University State Key Lab of Control and Simulation of Power Systems and Generation Equipment Department of Electrical Engineering Beijing China State Grid Gansu Electric Power Company Wind Power Technology Center Lanzhou China

ISBN: (纸本)9781728155081

Cleanliness of energy system requires both NOx reduction due to urgent air pollution control and CO2 cutting due to long-term climate change pressure. In the urban heating sector, quick-win plans use to be popular that focus on the NOx reduction by replacing untreated scattered coal fired boilers to natural gas or combined heat and power generators (CHPs). Meanwhile, in the electrical sector, all these fossil fuel generators should be cut down in the long-term decarbonization process. There should be a need for coordination of short- and long-term targets, because two energy supply sectors are believed to work in a coupled way in the future. A three-layered collaborative planning model is proposed in this paper: the top layer focuses roadmap economic evaluation;the middle layer applies coupled production simulation aiming at verifying energy balance;and the bottom one checks real-time operational feasibility. Pathways are made from 2020 to 2040 based on Hebei, China. Results indicate that the pathway with quick win will have delayed construction of renewable power, resulting the slow process in emission control. The long-term strategy scheme greatly promotes the renewables for supply in both sectors, but the close operational link forces the decoupling, leading to rebound on emission and operation cost on decentralized heating for the long-term future. In conclusion, the tradeoff pathway, reducing CO2 emission as much as possible with NOx emission controlled to acceptable level, is recommended with good performance on emission control and economy. © 2020 IEEE.

关键词： Emission control

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An Optimal Distributed Algorithm with Operator Extrapolation for Stochastic Aggregative Games

arXiv

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arXiv 2022年

作者： Wang, Tongyu Yi, Peng Chen, Jie Department of Control Science and Engineering Tongji University Shanghai201804 China The Shanghai Research Institute for Intelligent Autonomous Systems Shanghai201804 China The Institute of Advanced Study Tongji University Shanghai201804 China Frontiers Science Center for Intelligent Autonomous Systems Tongji University Shanghai China Shanghai Institute of Intelligent Science and Technology Tongji University Shanghai200092 China

This work studies Nash equilibrium seeking for a class of stochastic aggregative games, where each player has an expectation-valued objective function depending on its local strategy and the aggregate of all players' strategies. We propose a distributed algorithm with operator extrapolation, in which each player maintains an estimate of this aggregate by exchanging this information with its neighbors over a time-varying network, and updates its decision through the mirror descent method. An operator extrapolation at the search direction is applied such that the two step historical gradient samples are utilized to accelerate the convergence. Under the strongly monotone assumption on the pseudo-gradient mapping, we prove that the proposed algorithm can achieve the optimal convergence rate of O(1/k) for Nash equilibrium seeking of stochastic games. Finally, the algorithm performance is demonstrated via numerical simulations. © 2022, CC BY.

关键词： Extrapolation

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Application of Improved PSO-ELM in Auto Insurance Customer Risk Level Prediction 17

Application of Improved PSO-ELM in Auto Insurance Customer R...

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17th IEEE International Conference on Mechatronics and Automation, ICMA 2020

作者： Chen, Xi Xu, Liang Wang, Yalong Zhai, Xiang Guo, Xiang Tianjin University of Technology Tianjin Key Laboratory for Control Theory Applications in Complicated Systems School of Electrical and Electronic Engineering Tianjin300384 China Picc Property and Casualty Limited Operation Sharing Department Beijing100022 China

ISBN: (纸本)9781728164151

In order to improve the prediction accuracy of automobile insurance customer's risk level, a prediction model of automobile insurance customer's risk level based on GSPSO - ELM is proposed. The premium, insurance amount, number of risks, gender, driving age and other indicators were used as the main criteria to predict the risk level. The simulation results show that the proposed GSPSO - ELM prediction model can not only overcome the local optimal, and has higher precision of prediction, forecasting results of the mean square error (mse), decision coefficient and mean absolute percentage error and dynamic inertia weight PSO algorithm to optimize extreme learning machine, linear decreasing inertia weight PSO algorithm to optimize extreme learning machine model are improved. © 2020 IEEE.

关键词： Forecasting

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Compositional Synthesis of Signal Temporal Logic Tasks via Assume-Guarantee Contracts

Compositional Synthesis of Signal Temporal Logic Tasks via A...

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IEEE Conference on Decision and control

作者： Siyuan Liu Adnane Saoud Pushpak Jagtap Dimos V. Dimarogonas Majid Zamani Department of Electrical and Computer Engineering Technical University of Munich Germany Computer Science Department LMU Munich Germany Laboratoire des Signaux et Systèmes CentraleSupélec Univ. Paris Saclay France Robert Bosch Center for Cyber-Physical Systems in Indian Institute of Science Bangalore India Division of Decision and Control Systems KTH Royal Institute of Technology Stockholm Sweden Computer Science Department University of Colorado Boulder USA

ISBN: (数字)9781665467612

ISBN: (纸本)9781665467629

In this paper, we focus on the problem of compositional synthesis of controllers enforcing signal temporal logic (STL) tasks over a class of continuous-time nonlinear interconnected systems. By leveraging the idea of funnel-based control, we show that a fragment of STL specifications can be formulated as assume-guarantee contracts. A new concept of contract satisfaction is then defined to establish our compositionality result, which allows us to guarantee the satisfaction of a global contract by the interconnected system when all subsystems satisfy their local contracts. Based on this compositional framework, we then design closed-form continuous-time feedback controllers to enforce local contracts over subsystems in a decentralized manner. Finally, we demonstrate the effectiveness of our results on a numerical example.

关键词： Interconnected systems Task analysis Adaptive control Contracts

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