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International Conference on Information Science and Technology (ICIST)

作者： Yao Song Xingxing Ju Chaoli Yao College of Electronics and Information Engineering Sichuan University Chengdu China Key Laboratory of System Control and Information Processing Shanghai Jiaotong University Shanghai China Key Laboratory of Engineering Modeling and Statistical Computation of Hainan Province Hainan University Haikou China

ISBN: (数字)9798350353334

ISBN: (纸本)9798350353341

In this paper, we investigate fixed-time (FT) Nash equilibrium (NE) seeking problem for non-cooperative games. A novel second-order NE seeking neurodynamic system is proposed to accelerate the convergence. The proposed neurodynamic system's trajectory converges to NE within fixed-time under potential function and strongly monotone potential function respectively. It is shown that the upper bounds of the settling time are independent of the initial state of the system. The robustness of the proposed NE seeking neurodynamic system under bounded perturbations is further studied. The practicability of the proposed NE seeking system is illustrated via a simulation example and an analog circuit implementation on Multisim 14.3.

关键词： Neurodynamics Information science Upper bound Perturbation methods Games Analog circuits Nash equilibrium Robustness Trajectory Convergence

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Predominant types of regional cold waves in North China and their historical changes

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Atmospheric and Oceanic Science Letters 2024年第4期17卷 46-51页

作者： Xinyi Cheng Yiyi Zhang Jiandong Li Xin Hao Center for Climate System Prediction Research/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disaster Ministry of EducationNanjing University of Information Science&TechnologyNanjingChina Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science&TechnologyNanjingChina

寒潮事件对东亚地区的社会经济,生态系统和人体健康影响巨大.根据1980-2019年间10月至次年3月的每日寒潮记录和K-means聚类,本文识别出了中国两种不同类型的区域性寒潮(T1和T2). T1区域性寒潮主要影响东北地区,T2区域性寒潮则主要影响... 详细信息

寒潮事件对东亚地区的社会经济,生态系统和人体健康影响巨大.根据1980-2019年间10月至次年3月的每日寒潮记录和K-means聚类,本文识别出了中国两种不同类型的区域性寒潮(T1和T2). T1区域性寒潮主要影响东北地区,T2区域性寒潮则主要影响华北和东部地区.与T1区域性寒潮相比, T2区域性寒潮强度更强,持续时间更长,影响范围更广. 1980–2019年期间, T1区域性寒潮的频率显著增加,而T2区域性寒潮的频率则没有趋势变化. T1和T2区域性寒潮事件均与西伯利亚高压增强有关,然而与它们相关的对流层中层波列明显不同.在T1区域性寒潮事件发生期间,西伯利亚-蒙古上空出现负-正模态的500-hPa位势高度异常波列,削弱了东亚大槽,导致西伯利亚冷空气东移.T1区域寒潮频次增加趋势可能与全球变暖引起的500-hPa位势高度的线性趋势变化有关.与T2区域寒潮事件相关的波列则在乌拉尔山脉,蒙古和华北地区形成了脊-槽-脊环流异常,导致冷空气向东南方向入侵.本文得出结论,由于两类区域寒潮影响不同,西伯利亚高压增强和对流层中层波列模态在我国区域性寒潮事件的预报中应综合考虑.

关键词：寒潮 K-means聚类西伯利亚高压波列

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Assessing the water quality and environmental carrying capacity in watersheds based on wastewater treatment

International Journal of Energy and Water Resources

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International Journal of Energy and Water Resources 2025年 1-17页

作者： Tuong Nguyen, V. Ta Bui, L. Envim Group National Key Laboratory of Digital Control and System Engineering (DCSELab) National University Ho Chi Minh City (VNU-HCM) Ho Chi Minh City Vietnam Department of Geography Portland State University Portland USA

In numerous developing nations, untreated or poorly treated wastewater poses a major threat to ecosystems, significantly harming local biodiversity. Ensuring sustainable water resources that protect human health and ecosystems requires considering diverse factors and indicators simultaneously. Evaluating water quality (WQ) and river water environmental capacity (RWEC) is essential for determining the required level of wastewater treatment and the river channel’s receiving capacity. This study aims to investigate the impact of wastewater treatment on WQ and RWEC within a rapidly urbanizing watershed that suffers from inadequate planning. Eco-hydrodynamic models are applied to assess WQ and RWEC under the influence of pollution sources. Three characteristic pollutants in the area are considered: BOD, Nitrate, and Phosphate. Data on the sources of pollution, including the flow and quality of untreated and poorly treated wastewater, are collected. Additionally, meteorological and hydrological factors, as well as water quality monitoring data in the study area, are used. Three scenarios are considered based on the actual discharge in the area: the current scenario, the poorly treated scenario, and the scenario with treatment at permissible levels by enterprises. The results show that currently, the Nghèn River, the subject of the study, is negatively affected by pollution sources, with 54.17% of the reach not meeting BOD standard and 25% of the reach not meeting Phosphate standard. Meanwhile, the river’s waste assimilation capacity is significantly impacted by current pollution sources. Specifically, RWEC at 75% of the reach can no longer assimilate BOD, 50% for Nitrate, and 75% for Phosphate. These figures increase under the poorly treated scenario. To maintain environmental health and biodiversity, strict sanctions must be imposed on enterprises that do not comply with wastewater treatment regulations.

关键词： Nghen river River water environmental capacity (RWEC) Wastewater Wastewater treatment Water quality

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NBA-guided heuristic sampling algorithm for multi-robot task planning under temporal logic

NBA-guided heuristic sampling algorithm for multi-robot task...

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第43届中国控制会议

作者： Jiong Luo Yongzhao Hua Shunfu Ding Xiwang Dong Zhang Ren School of Automation Science and Electrical Engineering Science and Technology on Aircraft Control LaboratoryBeihang University Institute of Artificial Intelligence Beihang University Institute of Unmanned System Beihang University

ISBN: (数字)9789887581581

ISBN: (纸本)9798350366907

Aiming at the task planning problem of multi-robot under linear temporal logic(LTL), this paper proposes an improved sampling planning algorithm based on Nondeterministic Büchi automaton(NBA) guidance. Firstly, this paper defines a kind of LTL task planning problem, which mainly focuses on the meaningful key nodes in the task execution of each robot, and there are many sequential dependencies of task constraints. Then, an improved sampling algorithm framework is proposed,which uses a more efficient way to build a search tree and reduces the number of nodes in the tree. Furthermore, the sampling points are guided by NBA to ensure that sampling is conducive to the advancement of time-series tasks. And considering the task feasible region of each robot, the auction algorithm is introduced to optimize the local matching relationship, which greatly improves the quality of sampling points. Finally, numerical simulation is carried out to solve the LTL task planning problem. The optimality and stability of the algorithm are obviously improved, and the time consumption of this algorithm is obviously better than that of the existing advanced algorithms.

关键词： Multi-robot systems sampling-based planning temporal logic task planning NBA-guided

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Fault Prediction Method of Stage Lifts Based on Digital Twin

Fault Prediction Method of Stage Lifts Based on Digital Twin

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Culture-Oriented Science and Technology (CoST), International Conference on

作者： Huiqin Wang Chunxi Zhang Zhen Li Mengjiao Xiao Ministry of Culture and Tourism Key Laboratory of Acoustic Visual Technology and Intelligent Control System Beijing China School of Information and Communication Engineering Communication University of China Beijing China

ISBN: (数字)9798350380347

ISBN: (纸本)9798350380354

To improve the safety of stage lifts’ operation and reduce the failure rate, a digital-twin assisted fault prediction method is proposed here. Signals such as vibration and temperature are collected from the virtual and physical models. A fault prediction model based on Graph Convolutional Networks (GCN) is constructed to identify the potential faults of stage lift. The experiment results illustrate the effectiveness of the proposed model. It would enhance the safety and stability of stage equipment, and provide reliable support for stage performances.

关键词： Fault diagnosis Vibrations Training Computational modeling Predictive models Stability analysis Real-time systems

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Unilateral Payoff control is Infeasible in Network Attack-Defense Interactions

Unilateral Payoff Control is Infeasible in Network Attack-De...

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Chinese Automation Congress (CAC)

作者： Kaiwen Zhao Yu Xia Qi Su Department of Automation Shanghai Jiao Tong University Shanghai China Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai China Shanghai Engineering Research Center of Intelligent Control and Management Shanghai China

ISBN: (数字)9798350368604

ISBN: (纸本)9798350368611

Network resilience generally refers to the ability of a network to maintain normal operation in the face of various failures and disturbances, which has many applications in social, financial, communication, and transportation systems. There is a large amount of research on designing strategies to disrupt the network from the perspective of attack and to protect the network from the defense standpoint. However, attacks and defenses in the real world often occur simultaneously and repeatedly. The study of network resilience should not be limited to the structural characteristics but should consider the functional characteristics of the network. We develop a general game-theoretic framework to study attack-defense repeated interactions on complex net-works and examine the possibility of achieving precise control over the payoffs of attackers and defenders. Our findings reveal that neither the attacker nor the defender can unilaterally control their own payoff, the opponent's payoff, or any linear combination thereof. This work highlights the limitations of unilateral payoff control in real-world interaction scenarios, a consideration often overlooked in numerous theoretical studies.

关键词： Presses Interactive systems Stability criteria Transportation Games Power system stability Protection Game theory Faces Resilience

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Design of enhanced pipeline repair clamp 6

Design of enhanced pipeline repair clamp

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6th International Conference on Material Strength and Applied Mechanics, MSAM 2023

作者： Zhao, Bingjie Zhang, Shuli Hu, Jun Gao, Qijun Sun, Jingquan Lu, Linping Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control Tianjin University of Technology Tianjin300384 China National Demonstration Center for Experimental Mechanical and Electrical Engineering Education Tianjin300384 China CNOOC Safety Technology Services Co. Ltd Tianjin300457 China

ISBN: (纸本)9781643684345

Based on the technical requirements for emergency repair of damaged subsea oil and gas pipelines, an enhanced pipeline repair clamp is designed. In order to facilitate the installation of subsea environment, a hydraulic cylinder auxiliary installation mechanism is designed. Based on the reinforcement requirements of damaged part of pipelines, the enhanced components are designed and the slip enhanced structure is designed. Analyzed the sealing technology of the clamp, and found that double sealing technology is adopted by the clamp, resulting in higher reliability of pipeline repair sealing. The formula for calculating the key parameters of the wall thickness of the clamp is provided. The above work can provide reference for the design and application of enhanced pipeline repair clamp. © 2023 The Authors.

关键词： Repair

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Wireless/wired integrated transmission for industrial cyber-physical systems: risk-sensitive co-design of 5G and TSN protocols

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Science China(Information Sciences) 2022年第1期65卷 56-71页

作者： Yajing ZHANG Qimin XU Xinping GUAN Cailian CHEN Mingyan LI Department of Automation Shanghai Jiao Tong University Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai Engineering Research Center of Intelligent Control and Management College of Computer Science Chongqing University

The growing popularity of intelligent manufacturing is driven by deterministic transmission demands of applications in industrial cyber-physical systems(ICPS). However, the ossified shortages of industrial wireless communication such as diverse quality of service(Qo S) and complex signaling processes incur a severe long tail of transmission delay distribution. As a solution, the 5 th generation(5 G) wireless communication technology provides ultra-reliable and low-latency communication(URLLC) for industry scenarios. Moreover, the newly proposed time-sensitive networking(TSN) standards guarantee the transmission determinacy by gate mechanism. In this paper, we propose a heterogeneous time-sensitive network(HTSN) co-designed by 5 G and TSN. We first develop a predictive multi-priority wireless scheduling mechanism based on semi-persistent scheduling(SPS) to reduce signaling delay by reserving resources in *** we propose an adaptive data injection mechanism for TSN based on per-stream filtering and policing(PSFP), which dynamically adjusts the priority of data for queue injection in TSN. To further reduce the long tail of delay, we employ a risk-sensitive learning method to improve the worst-case delay. Simulations on a hot rolling production scenario demonstrate that the proposed mechanisms under HTSN achieve great performance in terms of integrated delay and resource utilization.

关键词： industrial cyber-physical systems (ICPS) 5G-TSN co-design wireless/wired integrated network risk-sensitive reinforcement learning deterministic communication

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Fully Distributed Time-Varying Formation control of Quadrotors

Fully Distributed Time-Varying Formation Control of Quadroto...

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International Conference on Guidance, Navigation and control, ICGNC 2022

作者： Cheng, Ming Tian, Yu Liu, Hao Li, Jianqi School of Astronautics Beihang University Beijing100191 China Beijing Institute of Electronic System Engineering Beijing100854 China Institute of Artificial Intelligence Beihang University Beijing100191 China Hunan Provincial Key Laboratory for Control Technology of Distributed Electric Propulsion Aircraft Changde415000 China

ISBN: (纸本)9789811966125

This paper centers on addressing the fully distributed formation control (FDFC) problem for multiple micro quadrotors to practically perform time-varying formation trajectory tracking flight. The quadrotor model is considered as a nonlinear underactuated system, being influenced by the effects of couplings, parameter variations and environmental uncertainties. A fully distributed formation control law is designed, with local information of the networked quadrotor system. Experimental results for a micro quadrotor team validates the stability and superiority of the proposed control law. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Robust control

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Digital Twin Enabled Flight control system Testing: A Physical-Virtual Mapping Experiment

Digital Twin Enabled Flight Control System Testing: A Physic...

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IEEE International Conference on Industrial Informatics (INDIN)

作者： Cheng Ren Cailian Chen Shanying Zhu Yehan Ma Xinping Guan Department of Automation Key Laboratory of System Control and Information Processing Ministry of Education of China and Shanghai Engineering Research Center of Intelligent Control and Management Shanghai Jiao Tong University Shanghai P. R. China

ISBN: (数字)9798331527471

ISBN: (纸本)9798331527488

Flight control system testing (FCST) is one of the most important testing during aircraft final assembly, however, traditional testing method highly rely on manual labor, resulting in low testing quality and efficiency. Targeting at improving the testing quality and efficiency, in this paper, we apply digtial twin (DT) technology in the FCST process for the first time. A virtual experimental platform named DT-FCST is constructed which is identical to a real wing experimental platform, supporting testing elements management and physical-virtual mapping experiments. The development process of the DT-FCST platform is detailed. Several experiments are conducted to demonstrate the effectiveness of DT technology. Based on motion scripts integrating real-time data from the cockpit, the cockpit control sticks and flight control surfaces are driven to achieve consistency between physical and virtual motions. With the help of DT technology, the entire movement process of control sticks and flight control surfaces are mapped with high fidelity in the DT-FCST platform, greatly enhancing the testing efficiency and monitoring quality.

关键词： system testing Process control Manuals Real-time systems Aircraft Informatics Surface treatment Monitoring Testing Aerospace control

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