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Dynamic Event-triggered Adaptive Asymptotic Tracking control of Uncertain systems with Unified Prescribed Performance

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IEEE Transactions on Automation Science and Engineering 2025年 22卷 14752-14762页

作者： Zhao, Kai Huang, Yuhang Zhou, Yongcheng International Joint Laboratory on Safety and Control of Autonomous Unmanned Systems of Ministry of Education China Chongqing University School of Automation Chongqing400044 China

This paper presents a dynamic event-triggered unified performance adaptive control method for nonparametric strict-feedback nonlinear systems. In contrast to most existing static/dynamic event-driven controllers that only guarantee uniformly ultimately bounded tracking results, here by introducing an external auxiliary variable into the dynamic threshold strategy and using the robust technique with the integral function, not only the communication overhead is reduced and the Zeno phenomenon is precluded, but also the asymptotic zero-error tracking is achieved. The control design and stability analysis become quite complicated and challenging when the performance constraint is taken into account. By constructing a series of functional transformations in conjunction with the core information technique to handle the nonparametric uncertainty, the proposed controller is able to guarantee multiple prescribed performance characteristics by appropriately adjusting the key design parameter, eliminating the need to redesign the controller and reanalyze the stability. Finally, simulation results are conducted to demonstrate the effectiveness of the theoretical discussion. © 2025 IEEE.

关键词： Self adjusting control systems

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Nonlinear stress analysis of aero-engine pipeline based on semi-analytical method

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Applied Mathematics and Mechanics(English Edition) 2025年第3期46卷 521-538页

作者： Weijiao CHEN Xiaochi QU Ruixin ZHANG Xumin GUO Hui MA Bangchun WEN School of Mechanical Engineering and Automation Northeastern UniversityShenyang 110819China Key Laboratory of Vibration and Control of Aero-Propulsion Systems Ministry of Education of China Northeastern UniversityShenyang 110819China

Fatigue failure caused by vibration is the most common type of pipeline *** core of this research is to obtain the nonlinear dynamic stress of a pipeline system accurately and efficiently,a topic that needs to be explored in the existing *** shell theory can better simulate the circumferential stress distribution,and thus the Mindlin-Reissner shell theory is used to model the *** this paper,the continuous pipeline system is combined with clamps through modal expansion for the first time,which realizes the coupling problem between a shell and a *** the Bouc-Wen model is used to simulate the nonlinear external force generated by a clamp,the nonlinear coupling characteristics of the system are effectively ***,the dynamic equation of the clamp-pipeline system is established according to the Lagrange energy *** on the resonance frequency and stress amplitude obtained from the experiment,the nonlinear parameters of the clamp are identified with the semi-analytical method(SAM)and particle swarm optimization(PSO)*** study provides a theoretical basis for the clamp-pipeline system and an efficient and universal solution for stress prediction and analysis of pipelines in engineering.

关键词： pipeline modeling stress analysis nonlinear-clamp support nonlinear vibration

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Variable Speed Limit control for Highway Scenarios a Multi-agent Reinforcement Learning Based Approach 2nd

Variable Speed Limit Control for Highway Scenarios a Multi...

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2nd International Conference on Cognitive Mobility, COGMOB 2023

作者： Kővári, Bálint Knáb, István Gellért Bécsi, Tamás Department of Control for Transportation and Vehicle Systems Budapest University of Technology and Economics Budapest Hungary Systems and Control Laboratory Institute for Computer Science and Control Budapest Hungary

ISBN: (纸本)9783031876196

Modern road networks are critical in developing transportation infrastructures from the aspect of sustainability, thanks to the rapid increase in road users. The demand for mobility makes the existing infrastructure more crowded, boosting greenhouse gas emissions and delays in everyday commuting. Expanding the road network is only possible in some cases and is also not feasible, but Intelligent Transportation systems (ITS) can enhance the efficiency of the existing transportation network. From a management point of view, a proven algorithm is Variable Speed Limit control, which regulates the state of certain sectors by spatially distributing traffic in the form of dynamically varying speed limits. Combining this with a state-of-the-art predictive solution can make a big difference to performance. For the design of speed limits, this paper proposes an approach where deep reinforcement learning with the smallest industrial share not only resolves moving jams that arise during congested traffic situations, but also prevents them, thereby avoiding cumulative error from transients, all by abandoning physical equations and identified models. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Highway traffic control

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A Novel Construction Method and control Strategy of Modular Battery Energy Storage systems Based on Improved Droop control

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IEEE Transactions on Power Electronics 2025年第8期40卷 11490-11508页

作者： Wang, Chao Zhang, Qiangxiang Han, Li Xiao, Yiping Xie, Kang Wu, Tiezhou Liang, Mengjun Hubei University of Technology Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage Systems Wuhan430068 China

The battery balancing technology based on modular converters needs to solve the problem of how to make many modular converters in series and parallel work together stably. In this paper, according to the characteristics of modular battery energy storage systems, the application form of droop control is improved, and a Battery Unit with Converter (BUC) is designed by combining battery, modular converter and droop control. The properties of parallel BUCs and series BUCs are analyzed and redesigned to make them suitable for series-parallel expansion and the output current sharing control of the batteries. On this basis, a construction method of energy storage systems based on BUCs is proposed. And a two-layer composite control strategy based on improved droop control is proposed, including the lower control strategy and the upper control strategy. Both simulation and physical experiments show that the proposed scheme can realize the constant voltage or constant current control of the total output of the energy storage system, and it can make the output current of each battery shared according to a given ratio with high control accuracy, and it can tolerate the communication failure of up to 2.5 s. © 2025 IEEE.

关键词： Battery storage

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Development and Application of Coverage control Algorithms: A Concise Review

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IEEE Transactions on Automation Science and Engineering 2025年 22卷 14906-14927页

作者： Cheng, Bin He, Mingyuan Zhu, Zhongpan He, Bin Chen, Jie Tongji University Department of Control Science and Engineering Shanghai201804 China National Key Laboratory of Autonomous Intelligent Unmanned Systems Shanghai201203 China

Coverage control is a foundational domain within multi-agent systems, which has recently undergone substantial advancements. Model-based and optimization-based control methods have achieved new breakthroughs and applications, while data-driven and learning-based algorithms in coverage control have also yielded significant results. This review examines the evolution and application of coverage control algorithms in multi-agent systems. Moreover, this review then focuses on how contemporary algorithms build on traditional control strategies and integrate cutting-edge data-driven and adaptive learning techniques. Finally, it explores potential future directions, emphasizing the importance of interdisciplinary approaches in overcoming existing challenges and seizing new opportunities in coverage control deployment. This review aims to be a valuable resource for researchers and practitioners, guiding continued exploration in this field. Note to Practitioners - This work was motivated by the need to provide an overview of the development and research of existing multi-agent coverage control algorithms. Different application scenarios and constraints require different methods of multi-agent coverage control, each with varying efficiencies. For researchers and practitioners, deciding which coverage control method to use in specific scenarios, while considering practical constraints such as energy limitations, can be challenging. Therefore, this work offers an overview of existing multi-agent coverage control algorithms and suggests potential application scenarios. This review serves as a comprehensive reference for researchers and practitioners in the field, helping them identify suitable solutions to ensure efficient coverage. © 2004-2012 IEEE.

关键词： Learning algorithms

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Robust Output Regulation With Prescribed Performance for Second-Order Non-Polynomial Nonlinear systems

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IEEE Transactions on Automation Science and Engineering 2025年 22卷 14234-14246页

作者： Liu, Wei Luo, Jialei Sun, Weijie South China University of Technology Key Laboratory of Autonomous Systems and Networked Control of Ministry of Education School of Automation Science and Engineering Guangzhou510641 China

This article focuses on the robust output regulation problem with prescribed performance for uncertain second-order nonlinear systems with non-polynomial nonlinearity. According to the existing framework for the robust output regulation problem of such nonlinear systems, we introduce some standard assumptions, and then construct two internal models of nonlinear forms to reproduce the steady-state information. Then, we convert the considered problem into the robust stabilization problem with prescribed performance of an augmented system containing the studied nonlinear system and the internal models. We incorporate a novel error transformation into the existing technique to design a stabilization controller, based on which we synthesize our control law to solve our original problem. Finally, we present two simulation examples to test our results. © 2004-2012 IEEE.

关键词： Nonlinear systems Performance evaluation Regulation Steady-state Transient analysis Polynomials Mathematical models Output feedback Adaptive systems Symmetric matrices

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Linear active disturbance rejection control of fighter aircraft based on MADDPG algorithm

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International Journal of systems, control and Communications 2025年第2期16卷 152-172页

作者： Lin, Yetong Ji, Yuehui Song, Yu Liu, Junjie Tianjin Key Laboratory for Control Theory and Applications in Complicated Industry Systems School of Electrical Engineering and Automation Tianjin University of Technology Tianjin300384 China

To address nonlinearity, strong coupling, and disturbances in fighter aircraft attitude control, this paper proposes an intelligent control method based on multi-agent deep deterministic policy gradient (MADDPG) and linear active disturbance rejection control (LADRC). A three-channel LADRC controller estimates and compensates for disturbances, uncertainties, and coupling terms in real time. To overcome the dimensionality curse in multi-parameter optimization, an independent DDPG controller is assigned to each channel, ensuring cooperative control via reward sharing and enhancing dynamic response and disturbance rejection. Additionally, long short-term memory (LSTM) and self-attention mechanisms are integrated into the policy and value networks to improve representation and decision-making. A piecewise combined reward function mitigates sparse rewards. Simulations show that, compared to MADQN-based and traditional LADRC methods, the proposed approach achieves superior control performance and significantly reduces manual parameter tuning efforts. Copyright © 2025 Inderscience Enterprises Ltd.

关键词： Disturbance rejection

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A New Strategy to Mitigate Overheating in Solar PV systems Using Adaptive Solar Tracking

A New Strategy to Mitigate Overheating in Solar PV Systems U...

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International Conference on Artificial Intelligence in Renewable Energetic systems, IC-AIRES 2024

作者： Dahli, Khadidja Selam, Karim Cheggaga, Nawal Electrical and Remote Control Systems Laboratory LabSET Faculty of Technology University of Blida 1 Blida Algeria Process Control Laboratory Polytechnical National School Algiers Algeria

ISBN: (纸本)9783031803000

High temperatures pose several challenges for solar power generation in desert environments, such as decreased efficiency, increased resistance, thermal-induced degradation, and potential damage to the panels. This study aims to address these challenges by proposing a solar tracking system that manages excessive heat and does not require cooling systems or additional complex mechanisms. Instead, we present an innovative approach to protect solar systems from increased heat by integrating temperature data readings into conventional solar tracking tools. When the temperature exceeds the panel's recommended threshold, the tracker adjusts its position to misalign the panels from the sun and prevent damage. The system will resume regular tracking once the temperature drops below the critical value. Our research indicates that positioning the tracker vertically at 90° helps protect the panels from overheating and reduces dust accumulation. This innovation has the potential to enhance the performance and longevity of solar power systems in desert environments. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Cooling systems

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Stability and Stabilization of Sampled-Data Based LFC for Power systems:A Data-Driven Method

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IEEE/CAA Journal of Automatica Sinica 2025年第1期12卷 291-293页

作者： Yu-Long Fan Chuan-Ke Zhang Yong He the School of Automation China University of Geosciences the Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems the Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education IEEE

Dear Editor,This letter is concerned with stability analysis and stabilization design for sampled-data based load frequency control(LFC) systems via a data-driven method. By describing the dynamic behavior of LFC systems based on a data-based representation, a stability criterion is derived to obtain the admissible maximum sampling interval(MSI) for a given controller and a design condition of the PI-type controller is further developed to meet the required MSI. Finally, the effectiveness of the proposed methods is verified by a case study.

关键词： Sampled data control systems

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Improving aircraft nose wheel steering stability based on control continuation method

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Science China(Technological Sciences) 2025年第3期68卷 258-277页

作者： Qiaozhi YIN Dexu KONG Jiawei WANG Hong NIE Xiaohui WEI National Key Laboratory of Helicopter Aeromechanics Nanjing210016China State Key Laboratory of Mechanics and Control for Aerospace Structures Nanjing210016China Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight Vehicle Nanjing210016China AVIC Nanjing Engineering Institute of Aircraft Systems Nanjing211106China

Aircraft steering instability during the taxiing process sometimes occurs resulting from the unstable bifurcation phenomena of the nonlinear steering dynamic system,which may lead to severe *** this study,the control parameter design of an aircraft nose wheel steering control system based on the control continuation method is proposed to reduce the number of unstable bifurcation points and enlarge the system stable region area in a certain parameter ***,the aircraft turning performance can be improved ***,a nonlinear aircraft rollout dynamic model is constructed,and the aircraft ground steering bifurcation characteristics are obtained under the open-loop steering control ***,the bifurcation performances under three closed-loop nose wheel steering controllers based on the feedback control method are compared,and the control parameter of the quadratic nonlinear controller with a better bifurcation control effect is selected as a second bifurcation parameter to analyze the directional system stability via two-parameter bifurcation ***,the influence of a crosswind on the aircraft ground steering bifurcation performance is studied for various control parameter ***,the control effects of a traditional proportional-integral-derivative(PID)nose wheel steering control law and the designed feedback controller are compared and ***,a semi-physical experiment of the aircraft nose wheel steering system is carried out,and different control parameter values are selected for test verification,which can further verify the control effect of the designed nonlinear feedback *** results indicate that the feedback control method is unable to vary the system bifurcation types,but appropriate control parameter design can effectively shrink the system instability region and even eliminate the unstable Hopf bifurcation points under some specific working conditions,improving the aircraft ground turning stability re

关键词： aircraft taxiing dynamics and stability nose wheel steering control system control continuation steering bifurcation characteristics quadratic feedback control

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