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International Conference on control, Decision and Information Technologies (CoDIT)

作者： Riddhi Mohan Bora Bharat Bhushan Sharma Bhabani Shankar Dey Indra Narayan Kar Electrical Engineering Department Control and Automation Group Indian Institute of Technology Delhi New Delhi India department of Electrical Engineering National Institute of Technology Hamirpur Hamirpur Himachal Pradesh India

Time delay analysis is very crucial when it comes to the synchronization of chaotic systems. All practical dynamical systems are described by differential equations, hence the presence of time delay in dynamics becomes a pivotal part of the system analysis. So, in this article, an attempt has been made to study the synchronization problem of two identical same-ordered time-delayed chaotic systems, in strict-feedback form as described in (2) and (3) in master and slave configuration. Unlike other conventional nonlinear control techniques, the back-stepping control design strategy is used to serve the purpose of synchronization. The main advantage of using the back-stepping control technique is that it utilizes only a single scalar controller to attain synchronization among different chaotic systems. A generalized control function $u\in R$ is designed for the same. For verification of the theoretical results, the 3D time-delayed Genesio-Tesi chaotic system is considered both a master and slave system. Simulation results are provided to support the proposition.

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Exploring Image Generation for UAV Change Detection

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IEEE/CAA Journal of Automatica Sinica 2022年第6期9卷 1061-1072页

作者： Xuan Li Haibin Duan Yonglin Tian Fei-Yue Wang Peng Cheng Laboratory Shenzhen 518000China IEEE State Key Laboratory of Virtual Reality Technology and Systems School of Automation Science and Electrical EngineeringBeihang UniversityBeijing 100083 Department of Automation University of Science and Technology of ChinaHefei 230027 State Key Laboratory for Management and Control of Complex Systems Institute of AutomationChinese Academy of SciencesBeijing 100190China Research Center for Computational Experiments and Parallel Systems Technology National University of Defense TechnologyChangsha 410073China

Change detection(CD)is becoming indispensable for unmanned aerial vehicles(UAVs),especially in the domain of water landing,rescue and ***,even the most advanced models require large amounts of data for model training and ***,sufficient labeled images with different imaging conditions are *** by computer graphics,we present a cloning method to simulate inland-water scene and collect an auto-labeled simulated *** simulated dataset consists of six challenges to test the effects of dynamic background,weather,and noise on change detection ***,we propose an image translation framework that translates simulated images to synthetic *** framework uses shared parameters(encoder and generator)and 22×22 receptive fields(discriminator)to generate realistic synthetic images as model training *** experimental results indicate that:1)different imaging challenges affect the performance of change detection models;2)compared with simulated images,synthetic images can effectively improve the accuracy of supervised models.

关键词： Change detection computer graphics image translation simulated images synthetic images unmanned aerial vehicles(UAVs)

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A third-party platoon coordination service: Pricing under government subsidies

A third-party platoon coordination service: Pricing under go...

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作者： Bai, Ting Johansson, Alexander Li, Shaoyuan Johansson, Karl Henrik Mårtensson, Jonas School of Electrical Engineering and Computer Science KTH Royal Institute of Technology Stockholm Sweden KTH Royal Institute of Technology Stockholm Sweden Department of Automation Shanghai Jiao Tong University Shanghai China Key Laboratory of System Control and Information Processing Shanghai Jiao Tong University Shanghai China Digital Futures Stockholm Sweden

This paper models a platooning system consisting of trucks and a third-party service provider (TPSP), which performs platoon coordination, distributes the platooning profit in platoons, and charges trucks in exchange for the services. Government subsidies used to incentivize platooning are also considered. We propose a pricing rule for the TPSP, which keeps part of the platooning profit including the subsidy each time a platoon is formed. In addition, a platoon coordination solution based on the distributed model predictive control (MPC) is proposed, in which the pricing rule under government subsidies is integrated. We perform a realistic simulation over the Swedish road network to evaluate the impact of the pricing rule and subsidies on the achieved profits and fuel savings. Our results show that subsidies are an effective mean to boost fuel savings from platooning. Moreover, the simulation study indicates that high pricing corresponds to a low platooning rate of the system, as trucks' incentives for platooning decrease. © 2023 The Authors. Asian Journal of control published by John Wiley & Sons Australia, Ltd on behalf of Chinese Automatic control Society.

关键词： Trucks

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A Proposal Of An Iterative Learning control Method For Simulating A Flyback Converter Using PSCAD

A Proposal Of An Iterative Learning Control Method For Simul...

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Green Buildings (ATiGB), Applying New Technology in

作者： Trung Thanh Cao Cuong Trinh Van Hung Pham Van Minh Quang Nguyen Anh Hoang School of Electrical and Electronic Engineering Hanoi University of Science and Technology Hanoi Vietnam Department of Automation and Control Ha Noi University of Industry Hanoi Vietnam

ISBN: (数字)9798331505042

ISBN: (纸本)9798331505059

DC-DC converters are essential components in power supply applications, portable electronics, renewable energy systems, and various other industries. An accurate system model is crucial for the development of the controller for a DC-DC converter. This research study focused on the development of an iterative learning control that operates without requiring the system model. The study employs PSCAD simulation software to simulate and analyze the effectiveness of an iterative learning control and a sliding mode controller for flyback converter. Detailed simulation results and comparisons between the two methodologies will be presented.

关键词： Industries Renewable energy sources Buck converters Power supplies Simulation Software Proposals PSCAD Voltage control Iterative learning control

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Resilient control under denial-of-service and uncertainty: An adaptive dynamic programming approach

arXiv

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arXiv 2024年

作者： Gao, Weinan Jiang, Zhong-Ping Chai, Tianyou State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang110819 China Department of Electrical and Computer Engineering Tandon School of Engineering New York University BrooklynNY11201 United States

In this paper, a new framework for the resilient control of continuous-time linear systems under denial-of-service (DoS) attacks and system uncertainty is presented. Integrating techniques from reinforcement learning and output regulation theory, it is shown that resilient optimal controllers can be learned directly from real-time state and input data collected from the systems subjected to attacks. Sufficient conditions are given under which the closed-loop system remains stable given any upper bound of DoS attack duration. Simulation results are used to demonstrate the efficacy of the proposed learning-based framework for resilient control under DoS attacks and model uncertainty. © 2024, CC BY.

关键词： Denial-of-service attack

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Robust Flatness-based control for Trajectory Tracking of an Underactuated Surface Ship

Robust Flatness-based Control for Trajectory Tracking of an ...

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IEEE International Conference on Automatica (ICA-ACCA)

作者： Matheus T. De Sousa José Oniram De A. Limaverde Filho Eugênio Fortaleza Department of Electrical Engineering University of Brasília Brasília Brazil Automation and Control Group (GRACO) University of Brasília Brasília Brazil

ISBN: (数字)9798350378115

ISBN: (纸本)9798350378122

The control of underactuated mechanical systems represents one of the most active areas of research in robotics and control system engineering, with a strong practical interest. Recently, methods based on differential flatness theory have been found to be useful in nonlinear control design for marine vehicles. However, to the best of the authors’ knowledge, existing works based on differential flatness theory have not addressed the impact of external non-zero mean disturbances or parametric uncertainties in the controller design for non-flat underactuated marine vehicles. Within this context, this work explores a scenario of trajectory tracking for a non-flat and nonlinear model of an underactuated surface ship under the influence of external disturbances and parametric uncertainties. By exploiting the Liouvillian and flat properties of the linearized system, we propose a tracking controller with integral action. Numerical simulation results show the proposed controller’s capability to overcome common problems of real-world systems, which may facilitate its implementation in practical applications.

关键词： Uncertainty Trajectory tracking Numerical simulation Robustness Trajectory Numerical models Proposals Mechanical systems Underactuated surface vessels Robots

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Fast and Robust Energy Router control in Dynamic Conditions Using Flatness-Based control Theory

Fast and Robust Energy Router Control in Dynamic Conditions ...

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Compatibility in Power Electronics (CPE)

作者： Mohammadreza Azizi Oleksandr Husev Carlos Roncero-Clemente Oleksandr Veligorskyi Ryszard Strzelecki Department of Radiotechnic and Embedded Systems Chernihiv Polytechnic National University Chernihiv Ukraine Department of Electric Electronic and Automation Engineering University of Extremadura Badajoz Spain Faculty of Electrical and Control Engineering Gdansk University of Technology Gdansk Poland

ISBN: (数字)9798331515171

ISBN: (纸本)9798331515188

In this paper, flatness-based control theory is developed to enhance the dynamic performance of a multiport energy router. The energy router integrates multiple power sources and sinks, including photovoltaic systems, battery storage, the grid, and various loads. Consequently, any sudden change in a subsystem can induce dynamic conditions across the entire system. The presented method controls the grid-side inverter and regulates the de link voltage. To implement this control approach, the system equations have been established, and it has been demonstrated that the system is differentially flat. Afterward, the controller design has been addressed. The simulation results confirm the proper performance of this method, and the comparisons made validate the high speed and accuracy of the system responses compared to conventional solutions.

关键词： Photovoltaic systems Power engineering Accuracy Simulation Modulation control systems Inverters Mathematical models control theory Voltage control

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Synchronization Stability of Grid-Tied VSC With control Limiters: Models, Solutions, and Boundaries

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IEEE Transactions on Energy Conversion 2024年

作者： Wu, Tianhao Jiang, Qirong Liu, Feng Huang, Meng Xie, Xiaorong State Grid Corporation of China National Power Dispatch and Control Center Beijing100031 China Tsinghua University State Key Laboratory of Power System Department of Electrical Engineering Beijing100084 China Wuhan University School of Electrical Engineering and Automation Wuhan430072 China

Existing studies on large-signal synchronization stability of the grid-following voltage-source converters (VSCs) have been focused on the phase-locked loop (PLL). Saturation nonlinearities introduced by current or voltage limiters, which can emerge during large disturbances, could greatly complicate the instability mechanism of PLL-synchronized converters. However, limited attention has been paid to such saturation-induced instability issues in prior work. This paper investigates the large-signal synchronization stability of grid-tied VSCs with full consideration to two typical kinds of saturation nonlinearities in the VSC's control system: the current hard limiter and the voltage circular limiter. The conditions under which the VSC may enter a saturated state are revealed. The impacts of hard and circular limiters on the system transient dynamics are analyzed separately. A unified differential equation (UDE) model that combines both kinds of limiters is proposed for quantitative analysis of synchronization stability. Subsequently, the averaging-theory-based analysis approximately solves the UDE model and provides the analytical large-signal stability boundaries of the system. The impacts of various factors, including operating conditions, PLL parameters, limiter thresholds, and active/reactive current control strategies, on the synchronization stability are investigated based on the proposed model. The effectiveness of theoretical analyses is validated via time-domain simulation and control hardware-in-the-loop tests. © 1986-2012 IEEE.

关键词： Phase locked loops

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Real-Time Identification and Self-Tuning PID controller for 1-DOF Helicopter System

Real-Time Identification and Self-Tuning PID Controller for ...

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Human-Computer Interaction, Optimization and Robotic Applications (HORA), International Congress on

作者： Enes Erdoğan Aydoğan Soylu Şahin Serhat Şeker Barış Başpınar Tufan Kumbasar Aeronautical Engineering Department Istanbul Technical University Istanbul Turkey Control and Automation Engineering Department Istanbul Technical University Istanbul Turkey Electrical Engineering Department Istanbul Technical University Istanbul Turkey AI and Intelligent Systems Laboratory Istanbul Technical University Istanbul Turkey

ISBN: (数字)9798331510886

ISBN: (纸本)9798331510893

Obtaining an accurate mathematical model is critical in control design applications. Therefore, the parameter uncertainties that occur during modeling or operation should be identified, and the controller design should be made to compensate for these uncertainties. In this paper, a system identification study was performed with a global-based Big Bang-Big Crunch optimization algorithm using input and output data from the one degree of freedom helicopter system. System dynamics are determined using this optimization algorithm over the flowing data, and the transfer function that best represents the system's behavior is obtained. A discrete time Proportional Integral Derivative (PID) controller is designed to minimize the overshoot and steady-state error of the system response with the same optimization algorithm. This process was used to automatically detect parametric uncertainties as long as the system receives input-output data, and to create a tuned PID controller structure. In order to demonstrate the superiority of the proposed methodology, initial PID is designed for the real-time system, and the performance of this PID and the tuned PID controller is compared under the parameter uncertainty. As a result, it is ensured that the tuned PID structure has the desired transient response dynamics of the system under parameter uncertainty compared to the initial PID structure.

关键词： Uncertain systems Transient response Uncertainty Heuristic algorithms Helicopters Transfer functions Real-time systems Mathematical models System identification Optimization

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A Derivative-free Kalman Filter-based Disturbance Observer using Flat Inputs

A Derivative-free Kalman Filter-based Disturbance Observer u...

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IEEE International Conference on Automatica (ICA-ACCA)

作者： José Oniram de A. Limaverde Filho Matheus T. de Sousa Anderson B. Rodrigues Eugênio Fortaleza Department of Electrical Engineering University of Brasília Brasília Brazil Automation and Control Group (GRACO) University of Brasília Brasília Brazil

ISBN: (数字)9798350378115

ISBN: (纸本)9798350378122

Differential flatness theory has proven useful in providing efficient solutions to advanced control and state estimation problems. However, its application to differentially flat systems whose flat output vector is not directly measurable may face practical limitations. Recently, the concept of flat inputs has emerged as a promising approach to overcome these constraints. Nevertheless, to the best of our knowledge, existing studies with flat inputs have not considered the presence of unknown external disturbances in controller design. To address this gap, this paper proposes a derivative-free Kalman filter-based disturbance observer using flat inputs for differentially flat nonlinear systems with stable internal dynamics where the flat output vector is not a measurable variable. The effectiveness of the proposed scheme is numerically verified for the well-known quadruple-tank process.

关键词： Simulation Noise process control Vectors Filtering theory Disturbance observers Trajectory Nonlinear dynamical systems Kalman filters State estimation

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