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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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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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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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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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Design and Development of Special Purpose Machine for Sensor Hole Punching and Bracket Pasting Operation 1

Design and Development of Special Purpose Machine for Sensor...

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1st International Conference on Computing, Communication and Green engineering, CCGE 2021

作者： Kapse, Apurva Nimse, Minal Bhalekar, Abhijeet Zambare, Umesh Rout, Julious Hinge, Trupti JSPM'S Rajarshi Shahu College of Engineering Department of Electrical Engineering Pune India Automation Control Head Metrolab Automation PVT. LTD. Pune India

ISBN: (纸本)9781665415095

Now a days, automation plays a vital role in industries and can be obtained with a low cost, reduced time, high quality, reliability, safety for the employee. Although automotive industry is one of the world's most dynamic and competitive industries;but being under continuous pressure to improve performance in a highly competitive, cost sensitive environment. In the wake of guiding principles like lean production, Overall Equipment Efficiency (OEE) and World Class Performance (WCP), condition monitoring has become a key factor and Special Purpose Machine (SPM) has been dealing with main manufacturers in Europe and Asia for many years. This paper proposes the design of special purpose machine to execute the operation of sensor hole punching and bracket pasting. This method replaces manual method which consumes a lot of time and punches only 60 parts per day. The proposed method is cost efficient, saves a lot of valuable time and contributes to punch 200 parts per day. The detailed designing and development of Special Purpose Machine sensor hole punching and bracket pasting considering Mechanical, Pneumatic & electrical aspects and PLC are the special contributions of this paper. © 2021 IEEE.

关键词： Special purpose machine tools

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Design of Lowpass Filter and Wavelet Analysis for Electroretinogram in Dogs

Design of Lowpass Filter and Wavelet Analysis for Electroret...

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IEEE Region 10 International Conference TENCON

作者： Tunyawat Tuntrik Nalinee Tuntivanich David Banjerdpongchai Dept. of Electrical Engineering Center of Excellence in Intelligent Control Automation of Process Systems Faculty of Engineering Chulalongkorn University Bangkok Thailand Dept. of Veterinary Surgery Faculty of Veterinary Science Bangkok Thailand

In frequency domain, wavelet coefficient is one of the characteristics of ERG signal which is hidden in frequency-domain. This paper aims to develop a tool for analyzing the constituent frequencies and time of interest in the dog's ERG signal using wavelet analysis. We design a lowpass filter to reduce noise during the measurement of ERG response. ERG dataset was obtained for the light intensity series and their constituent frequencies are analyzed by using the continuous wavelet transform (CWT). The results show that, in time-domain, as light intensity increases, both amplitudes of a-wave and b-wave are higher. We can visualize the noise interference in the ERG signals. Then a lowpass filter is designed to attenuate the noise effect. The filtered signals have lower a-, and b-waves' amplitude which affect the important characteristics in time domain. Therefore, we choose to filter signal from 26ms onward, the main components are recovered, and the filtered signal becomes smoother. In frequency-domain, the peak magnitude of wavelet coefficients is increased as light intensity increases.

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A Causal Model-based Planner for the Reconfiguration of Continuous processes

A Causal Model-based Planner for the Reconfiguration of Cont...

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2021 European control Conference, ECC 2021

作者： Reinartz, Christopher Thuesen Enevoldsen, Thomas Galeazzi, Roberto Ravn, Ole Technical University of Denmark Automation and Control Group Department of Electrical Engineering LyngbyDK-2800 Kgs Denmark

ISBN: (纸本)9789463842365

This paper presents a planning framework for discrete planning of human operations in highly automated industrial plants, where manual and automatic control coexist. Based solely on qualitative knowledge of the controlled continuous process represented through signed directed graphs, the planner exploits a greedy algorithm to determine the optimal action for the human operator upon changes in the process' operating conditions or reconfiguration of the control system due to faulty conditions. The planner results in a decision support tool that instructs the human operator on the best course of action. The planning framework and the resulting planner are demonstrated on a quadruple-tank system. © 2021 EUCA.

关键词： Directed graphs

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