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Distributed Cooperative Learning for Discrete-Time Strict-Feedback Multi Agent Systems Over Directed Graphs

IEEE/CAA Journal of Automatica Sinica 2022年第10期9卷 1831-1844页

作者： Min Wang Haotian Shi Cong Wang IEEE the School of Automation Science and Engineering South China University of TechnologyGuangzhou 510641 Peng Cheng Laboratory Shenzhen 518055China the School of Control Science and Engineering Shandong UniversityJinan 250061China the Center for Intelligent Medical Engineering Shandong UniversityJinan 250061China

This paper focuses on the distributed cooperative learning(DCL)problem for a class of discrete-time strict-feedback multi-agent systems under directed *** with the previous DCL works based on undirected graphs,two main challenges lie in that the Laplacian matrix of directed graphs is nonsymmetric,and the derived weight error systems exist n-step *** novel lemmas are developed in this paper to show the exponential convergence for two kinds of linear time-varying(LTV)systems with different phenomena including the nonsymmetric Laplacian matrix and time ***,an adaptive neural network(NN)control scheme is proposed by establishing a directed communication graph along with n-step delays weight updating ***,by using two novel lemmas on the extended exponential convergence of LTV systems,estimated NN weights of all agents are verified to exponentially converge to small neighbourhoods of their common optimal values if directed communication graphs are strongly connected and *** stored NN weights are reused to structure learning controllers for the improved control performance of similar control tasks by the“mod”function and proper time series.A simulation comparison is shown to demonstrate the validity of the proposed DCL method.

关键词： Cooperative learning control directed graphs discrete-time nonlinear system neural networks(NNs) strict-feedback systems

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Preparation,structure and stability of protein-pterostilbene nanocomplexes coated by soybean polysaccharide and maltodextrin

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Food Bioscience 2022年第5期49卷 662-669页

作者： Ling Zhu Fan Yang Dongze Li Gangcheng Wu Hui Zhang School of Food Science and Technology Jiangnan UniversityWuxi214122China National Engineering Research Center for Functional Food Jiangnan UniversityChina Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province China

Pterostilbene(PTS)has received considerable attention in recent years because of its beneficial effects on health;however,its poor solubility hinders its application in the food *** study aimed to prepare and characterise three types of proteins(whey protein isolate(WPI),soybean protein isolate(SPI),and flaxseed protein isolate(FPI))conjugates of PTS,which could improve its solubility and *** results showed that the spherical particles of the protein-based nano-complexes were dissociated and *** bound to PTS mainly through hydrophobic interactions and hydrogen bonding,and PTS in proteins existed in an amorphous *** conferred PTS with better thermal stability than WPI and *** coating of FPI-PTS with soybean polysaccharide and maltodextrin yielded a more stable nanocomplex *** prepared nanocomplex powder exhibited better thermal,illumination,and storage stabilities than *** study provides guidelines for the potential application of protein-based nano-complexes in functional foods.

关键词： Proteins Pterostibene Nanocomplex structure Coating Stability

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Padé Approximations and the SDRE Technique in the Design of Parametric Families of Feedback Laws

Padé Approximations and the SDRE Technique in the Design of...

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2022 International Russian Automation Conference, RusAutoCon 2022

作者： Danik, Yulia Dmitriev, Mikhail Federal Research Center 'Computer Science and Control' of Russian Academy of Sciences Department 71 Moscow Russia Federal Research Center 'Computer Science and Control' of Russian Academy of Sciences Department 81 Moscow Russia

ISBN: (数字)9781665466554

ISBN: (纸本)9781665466554

The paper demonstrates an approach for the construction of a parametric description of a family of feedbacks using one-point and two-point matrix Padé approximations (PA), which are obtained on the basis of asymptotic approximations. The method is demonstrated on numerical calculations for a number of examples from one class of problems with a parameter, and a brief overview of the ideas of using asymptotic approximations in the form of regular series for control problems with continuous perturbations and boundary series is given, in the case of the presence of singular perturbations in the model. Because when constructing matrix PAs and finding matrix coefficients of PAs, linear matrix equations arise, in order to simplify them, Richardson extrapolation is used in the work. © 2022 IEEE.

关键词： Matrix algebra

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SnS_(2)nanoparticles embedded in sulfurized polyacrylonitrile composite fibers for high-performance potassium-ion batteries

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Interdisciplinary Materials 2024年第1期3卷 150-159页

作者： Ruiling Li Lijuan Tong Yitong Jiang Yaxin Wang Jing Long Xiaochuan Chen Junxiong Wu Xiaoyan Li Yuming Chen Engineering Research Center of Polymer Green Recycling of Ministry of Education Fujian Key Laboratory of Pollution Control&Resource ReuseCollege of Environmental and Resource Sciences and College of Carbon Neutral Modern IndustryFujian Normal UniversityFuzhouFujianChina

Potassium-ion batteries(PIBs)have garnered significant attention as a promising alternative to commercial lithium-ion batteries(LIBs)due to abundant and cost-efficient potassium ***,the large size of potassium ions and the resulting sluggish reaction kinetics present major obstacles to the widespread use of ***,we present a simple method to ingeniously encapsulate SnS_(2)nanoparticles within sulfurized polyacrylonitrile(SPAN)fibers(SnS_(2)@SPAN)for serving as a high-performance PIB *** large interlayer spacing of SnS_(2)provides a fast transport channel for potassium ions during charge–discharge cycles,while the one-dimensional SPAN skeleton offers massive binding sites and shortens the diffusion path for potassium ions,facilitating faster reaction ***,the excellent ductility of SPAN can effectively accommodate the large volume changes that occur in SnS_(2)upon potassium-ion insertion,thereby enhancing the cyclic stability of SnS_(2).Benefiting from the above advantages,the SnS_(2)@SPAN composites exhibit impressive cyclability over 500 cycles at 4 A g−1,with a capacity retention rate close to 100%.This study provides an effective approach for stabilizing high-capacity PIB anode materials with large volume variations.

关键词： electrospinning encapsulation potassium‐ion batteries sulfurized polyacrylonitrile tin disulfide

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research on the logic monitoring method for the cloud computing based safety computer

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Transportation Safety and Environment 2023年第2期5卷 79-87页

作者： Yaran Yang Lianchuan Ma Tao Tang Huan Ding Zhen Liu School of Electronic and Information Engineering Beijing Jiaotong UniversityBeijing 100044China National Engineering Research Center of Rail Transportation Operation and Control System Beijing Jiaotong UniversityBeijing 100044China State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong UniversityBeijing 100044China CRSC Research&Design Institute Group Co.Ltd. Beijing 100070China

With the development of railway construction in China,the computing demand of the train control system is increasing day by *** application of cloud computing technology on the rail transit signal system has become a research hotspot in recent *** to improve the safety and availability of the safety computer platform in the cloud computing environment is the key problem when applying cloud computing to the train operation control *** the cloud platform is in an open network environment,fac-ing many security vulnerabilities and malicious network attacks,it is necessary to monitor the operation of computer programmes through edge safety ***,this paper encrypts the logical monitoring method,and then proposes a secure computer de fence model based on the dynamic heterogeneous redundancy *** the continuous time Markov chain(CTMC)is used to quantitatively solve the stable probability of the system,and the influence of different logical monitoring methods on the anti-attack performance of the system is ***,the experiment proves that the dynamic heterogeneous redundancy structure composed of encryption logic monitoring can guarantee the safe and stable operation of the safety computer more effectively.

关键词： safety computer logical monitoring method continuous time Markov modelling(CTMC) cloud computing anti-aggression analysis

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The Task Collaborative Migration Method for Marine IoT Based on Edge Computing-RESTful Architecture 6

The Task Collaborative Migration Method for Marine IoT Based...

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6th International Conference on Artificial Intelligence in Information and Communication, ICAIIC 2024

作者： Hu, Yifan Wang, Fuqiang School of Information and Control Engineering Qingdao University of Technology Qingdao China Shandong Computer Science Center and Shandong Provincial Key Laboratory of Computer Networks Jinan China

ISBN: (纸本)9798350344349

Marine Internet of Things (Marine IoT) has garnered increasing interest in monitoring oceanic environments. But establishing a Marine IoT system for observing and processing marine environmental data presents various challenges. These include limited underwater communication bandwidth, and uneven distribution of tasks among data-sensing devices. This paper proposes an Edge Computing-RESTful (ECR) architecture to efficiently integrate and process the substantial volume of data gathered through marine observations. 1) The ECR method is introduced for task collaborative migration, aiming to schedule and manage the tasks within the Marine IoT system. 2) Through unified scheduling and management of tasks, the edge gateway can facilitate migration, scheduling, and interaction of task loads among various edge sensing devices. The proposed dynamic and adaptive approach matches computing tasks with edge sensing devices, minimizing energy consumption and migration delay within the Marine IoT system. Simulation results validate the superiority of the proposed method for Marine IoT, showcasing improved performance metrics such as reduced time delays and lower energy consumption during task collaborative migration. © 2024 IEEE.

关键词： Edge computing

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Development of Neural Network Approach for Reconstructing the Atmospheric Humidity Profile from Ground-based Microwave Radiometer-spectrometer Data

Development of Neural Network Approach for Reconstructing th...

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2024 Photonics and Electromagnetics research Symposium, PIERS 2024

作者： Egorov, D.P. Verina, Y.V. Kravchenko, O.V. Kotel'Nikov Institute of Radioengineering and Electronics of RAS Russia Bauman Moscow State Technical University Russia Federal Research Center "Computer Science and Control" of RAS Russia

ISBN: (纸本)9798350375909

An original neural network approach based on the mixture of experts has been developed to solve the inverse problem of absolute humidity altitude profile retrieval from atmospheric downwelling radiation brightness temperature obtained in the bands of water vapor resonant absorption near 22.235 and 183.3GHz lines. The software implementation of the neural network model assumes the possibility of its training on GPU. The training dataset has been formed by repeatedly solving the forward problem of simulating the brightness temperature spectra based on around 3000 sessions of radiosonde measurements of meteorological parameters profiles (up to an altitude of 15km) conducted in the city of Dolgoprudny, Moscow Region, from January 2019 to October 2023. These meteorological parameters include air temperature T, atmospheric pressure P, and relative humidity, which is than converted to absolute humidity values ρ. For the dataset augmentation purposes, the temperature profile T varies within±5%, and absolute humidity profile ρ within±20% from the corresponding near-surface values. Herewith, the horizontally homogeneous stratus cloud layer, which vertical extent gradually increases while its liquid water content also increases from 0kg/m2 to more than 5.5kg/m2, has been modeled in the field-of-view of ground-based microwave radiometer antenna. The results of applying the trained model to the test dataset show satisfactory agreement between the reconstructed absolute humidity profiles and the values measured by the radiosonde. © 2024 IEEE.

关键词： Radiosondes

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Pattern Matching of Industrial Alarm Floods Using Word Embedding and Dynamic Time Warping

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IEEE/CAA Journal of Automatica Sinica 2023年第4期10卷 1096-1098页

作者： Wenkai Hu Xiangxiang Zhang Jiandong Wang Guang Yang Yuxin Cai School of Automation China University of GeosciencesWuhan 430074Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex SystemsWuhan 430074 Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of EducationWuhan 430074China College of Electrical Engineering and Automation Shandong University of Science and TechnologyQingdao 266590China

Dear Editor,This letter proposes a new pattern matching method based on word embedding and dynamic time warping(DTW)to identify groups of similar alarm ***,alarm messages are transformed into numeric values that represent alarms and also reflect the relationships between alarm ***,similarities between numerically encoded alarm flood sequences are calculated by DTW and groups of similar floods are identified via *** effectiveness of the proposed method is demonstrated by a case study with alarm&event data obtained from a public industrial simulation model.

关键词： Word Alarm DTW

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On-chip wavefront shaping in spacing-varied waveguide arrays

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Nanophotonics 2023年第19期12卷 3737-3745页

作者： Niu, Yunfei Niu, Yunlong Hu, Xiaopeng Hu, Yong Du, Qingyang Yu, Shaoliang Chu, Tao Research Center for Intelligent Optoelectronic Computing Zhejiang Laboratory Hangzhou311100 China College of Control Science and Engineering Zhejiang University Hangzhou310027 China Radiation Monitoring Technical Center Ministry of Ecology and Environment Hangzhou310012 China National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Nanjing University Nanjing210093 China College of Information Science and Electronic Engineering Zhejiang University Hangzhou310027 China

The ability to manipulate light propagation sets the foundations for optical communication and information processing systems. With the ever-growing data capacity and data rate, photonic integrated circuits have attracted increasing attentions of researchers owing to their large-volume integration capacity and fast operation speed. In this work, we proposed and experimentally demonstrated a new wavefront shaping method using waveguide arrays with hyperbolic secant refractive index profiles. Through theoretically analyzing the diffraction and coherence properties, we found that a single waveguide array can perform both imaging and phase transformation, which are the two primary functions of optical lenses. We further expanded this function and fabricated the corresponding devices on a silicon nitride waveguide platform. Deterministic beam shaping, such as focusing, expansion, collimation, and steering, is successfully realized. This wavefront control method exhibits the potential for on-chip optical routing, ranging, sensing, etc., with high integration density and scalability. © 2023 the author(s), published by De Gruyter, Berlin/Boston.

关键词： Optical communication

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On the chronological understanding of the homogeneous dielectric barrier discharge

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High Voltage 2023年第6期8卷 1132-1150页

作者： Xinpei Lu Zhi Fang Dong Dai Tao Shao Feng Liu Cheng Zhang Dawei Liu Lanlan Nie Chunqi Jiang State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhanChina College of Electrical Engineering and Control Science Nanjing Tech TechnologyNanjingChina School of Electric Power South China University of TechnologyGuangzhouChina Institute of Electrical Engineering Chinese Academy of SciencesBeijingChina Frank Reidy Research Center for Bioelectrics Old Dominion UniversityNorfolkVirginiaUSA Department of Electrical and Computer Engineering Old Dominion UniversityNorfolkVirginiaUSA

Dielectric barrier discharges(DBD)are widely utilised non‐equilibrium atmospheric pressure plasmas with a diverse range of applications,such as material processing,surface treatment,light sources,pollution control,and *** the course of several decades,extensive research has been dedicated to the generation of homogeneous DBD(H‐DBD),focussing on understanding the transition from H‐DBD to filamentary DBD and exploring strategies to create and sustain H‐*** paper first discusses the in-fluence of various parameters on DBD,including gas flow,dielectric material,surface conductivity,and mesh ***,a chronological literature review is presented,highlighting the development of H‐DBD and the associated understanding of its un-derlying *** encompasses the generation of H‐DBD in helium,nitrogen,and ***,the paper provides a brief overview of multiple‐current‐pulse(MCP)behaviours in H‐*** objective of this article is to provide a chronological un-derstanding of homogeneous dielectric barrier discharge(DBD).This understanding will aid in the design of new experiments aimed at better comprehending the mechanisms behind H‐DBD generation and ultimately assist in achieving large‐volume H‐DBD in an air environment.

关键词： dielectric barrier pollution

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