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A Backstepping Integral Sliding Mode controller Design for Partial Feedback Linearized Models of Synchronous Generators in Simple Power Systems to Improve the Transient Stability 2

A Backstepping Integral Sliding Mode Controller Design for P...

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2nd IEEE International Conference on Smart Technologies for Power, Energy and control, STPEC 2021

作者： Pramanik, M.A.H. Roy, T.K. Anower, M.S. Ghosh, S.K. Mahmud, M.A. Rajshahi University of Engineering Technology Department of Electrical Computer Engineering Rajshahi6204 Bangladesh Rajshahi University of Engineering Technology Department of Electronics Telecommunication Engineering Rajshahi Bangladesh Rajshahi University of Engineering Technology Department of Electrical Electronic Engineering Rajshahi6204 Bangladesh Northumbria University Electrical Power Control Systems Research Group Faculty of Engineering and Environment Newcastle United Kingdom

ISBN: (纸本)9781665443197

This paper proposes a backstepping integral sliding mode controller (BISMC) based on the partial feedback linearization (PFBL) of the detailed model of synchronous generators (SGs) in simple power networks. The proposed scheme is designed to obtain the excitation control input using the detailed model of SGs in a simple power system where the PFBL is used to simplify the model. The BISMC is employed on this simplified model to ensure the transient stability during large disturbances. The inherent property of the BISMC tackles the chattering and overcomes the parameter sensitivity problem of the PFBL scheme. Simulation studies are conducted under different operating situations to justify the effectiveness of the proposed PFBL-BISMC over a partial feedback linearizing controller (PFBLC). © 2021 IEEE.

关键词： Synchronous generators

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Model predictive control for tracking using artificial references: Fundamentals, recent results and practical implementation

Model predictive control for tracking using artificial refer...

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IEEE Conference on Decision and control

作者： P. Krupa J. Köhler A. Ferramosca I. Alvarado M.N. Zeilinger T. Alamo D. Limon Computer Science Group Gran Sasso Science Institute (GSSI) L’Aquila Italy ETH Zürich Institute for Dynamic Systems and Control Zürich Switzerland Department of Management Information and Production Engineering University of Bergamo Via Marconi 5 Dalmine (BG) Italy Department of Systems Engineering and Automation Universidad de Sevilla Seville Spain

ISBN: (数字)9798350316339

ISBN: (纸本)9798350316346

This paper provides a comprehensive tutorial on a family of Model Predictive control (MPC) formulations, known as MPC for tracking, which are characterized by including an artificial reference as part of the decision variables in the optimization problem. These formulations have several benefits with respect to the classical MPC formulations, including guaranteed recursive feasibility under online reference changes, as well as asymptotic stability and an increased domain of attraction. This tutorial paper introduces the concept of using an artificial reference in MPC, presenting the benefits and theoretical guarantees obtained by its use. We then provide a survey of the main advances and extensions of the original linear MPC for tracking, including its non-linear extension. Additionally, we discuss its application to learning-based MPC, and discuss optimization aspects related to its implementation.

关键词： Surveys Asymptotic stability Costs Tutorials Optimization Predictive control

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Recurrent Sliding Mode-Based State Observer Design for a Subset of Nonlinear Systems

Recurrent Sliding Mode-Based State Observer Design for a Sub...

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International Conference on control, Automation, Robotics and Vision (ICARCV)

作者： Gael P. Atheupe Bhagyashri T. Gurjar Bruno Monsuez Renault Group and IP Paris Guyancourt FRANCE Department of Aerospace Engineering Intelligent Systems & Control Lab Indian Institute of Technology Bombay Mumbai India Computer science & systems engineering Lab (U2IS) of ENSTA Paris Institute Poly-technique de Paris (IP Paris) Palaiseau FRANCE

ISBN: (数字)9798331518493

ISBN: (纸本)9798331518509

This paper introduces a novel Sliding Mode-Based Observer tailored for a specific subset of nonlinear systems of order $\boldsymbol n$ featuring Lipschitz nonlinearities. The study establishes stability conditions that ensure convergence of the estimation error (s) in finite time until order $\boldsymbol n$ , thus, providing an accurate state (s) estimation without the necessity for disturbance matching conditions. Furthermore, the study presents an extension of the scope of application of the proposed method to tackle a unique scenario characterized by a time-varying and non-invertible function of the output dynamics of the system model. The effectiveness of the proposed observer is showcased through simulation examples.

关键词： Estimation error Automation Accuracy Observers Stability analysis Nonlinear dynamical systems Time-varying systems Robots Convergence

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A Composite Nonlinear controller Design to Enhance the Large-Signal Stability of a DC Distribution System with Constant Power Loads 2

A Composite Nonlinear Controller Design to Enhance the Large...

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2nd IEEE International Conference on Smart Technologies for Power, Energy and control, STPEC 2021

作者： Ghosh, S.K. Roy, T.K. Pramanik, M.A.H. Mahmud, M.A. Rajshahi University of Engineering Technology Department of Electrical Electronic Engineering Rajshahi6204 Bangladesh Rajshahi University of Engineering Technology Department of Electronics Telecommunication Engineering Rajshahi6204 Bangladesh Rajshahi University of Engineering Technology Department of Electrical Computer Engineering Rajshahi6204 Bangladesh Northumbria University Newcastle Electrical Power Control Systems Research Group Faculty of Engineering and Environment United Kingdom

ISBN: (纸本)9781665443197

A composite backstepping integral sliding mode controller (BISMC) is proposed in this work for a DC-DC boost converter feeding a constant power load (CPL) in a simple DC distribution system. Here, the main objective is to ensure the large-signal stability with wide variations in operating regions. The proposed BISMC is designed based on the feedback linearized model of the DC-DC boost converter with a CPL where the average state-space model is exactly linearized. The use of exact feedback linearization overcomes the non-minimum phase problem of a DC-DC boost converter due to the presence of the CPL that exhibits negative impedance characteristics. The control law is obtained using the combination of backstepping and integral sliding mode control schemes where both approaches ensure the faster convergence of errors for all states and the integral action on the sliding surface is designed in such a fashion that will ensure the constant frequency operation of the power converter feeding the CPL while eliminating the variable frequency associated problem of the existing controllers. In addition, the stability of the whole system is analyzed through the Lyapunov stability theory. Numerical simulations are conducted to verify the performance of the designed composite nonlinear controller whose performance is also compared with a double-loop proportional integral (PI) controller to verify the superiority of the designed controller. © 2021 IEEE.

关键词： Backstepping

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Bayesian Optimization-based Nonlinear Adaptive PID controller Design for Robust Mobile Manipulation

arXiv

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arXiv 2022年

作者： Hajieghrary, Hadi Deisenroth, Marc Peter Bekiroglu, Yasemin Chalmers University of Technology Department of Electrical Engineering Automatic Control Research Group Sweden University College London Department of Computer Science Centre for Artificial Intelligence United Kingdom

In this paper, we propose to use a nonlinear adaptive PID controller to regulate the joint variables of a mobile manipulator. The motion of the mobile base forces undue disturbances on the joint controllers of the manipulator. In designing a conventional PID controller, one should make a trade-off between the performance and agility of the closed-loop system and its stability margins. The proposed nonlinear adaptive PID controller provides a mechanism to relax the need for such a compromise by adapting the gains according to the magnitude of the error without expert tuning. Therefore, we can achieve agile performance for the system while seeing damped overshoot in the output and track the reference as close as possible, even in the presence of external disturbances and uncertainties in the modeling of the system. We have employed a Bayesian optimization approach to choose the parameters of a nonlinear adaptive PID controller to achieve the best performance in tracking the reference input and rejecting disturbances. The results demonstrate that a well-designed nonlinear adaptive PID controller can effectively regulate a mobile manipulator's joint variables while carrying an unspecified heavy load and an abrupt base movement occurs. © 2022, CC BY-NC-ND.

关键词： Closed loop systems

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Modular Model Reduction of Interconnected Systems: A Robust Performance Analysis Perspective

arXiv

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arXiv 2022年

作者： Janssen, Lars A.L. Besselink, Bart Fey, Rob H.B. van de Wouw, Nathan Dynamics & Control group Department of Mechanical Engineering Eindhoven University of Technology Netherlands Bernoulli Institute for Mathematics Computer Science and Artificial Intelligence University of Groningen Netherlands

Many complex engineering systems consist of multiple subsystems that are developed by different teams of engineers. To analyse, simulate and control such complex systems, accurate yet computationally efficient models are required. Modular model reduction, in which the subsystem models are reduced individually, is a practical and an efficient method to obtain accurate reduced-order models of such complex systems. However, when subsystems are reduced individually, without taking their interconnections into account, the effect on stability and accuracy of the resulting reduced-order interconnected system is difficult to predict. In this work, a mathematical relation between the accuracy of reduced-order linear-time invariant subsystem models and (stability and accuracy of) resulting reduced-order interconnected linear time-invariant model is introduced. This result can subsequently be used in two ways. Firstly, it can be used to translate accuracy characteristics of the reduced-order subsystem models directly to accuracy properties of the interconnected reduced-order model. Secondly, it can also be used to translate specifications on the interconnected system model accuracy to accuracy requirements on subsystem models that can be used for fit-for-purpose reduction of the subsystem models. These applications of the proposed analysis framework for modular model reduction are demonstrated on an illustrative structural dynamics example. © 2022, CC BY-NC-ND.

关键词： Robust control

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An Analysis about Capital and Maintenance Costs related to Electrical Flexibility

An Analysis about Capital and Maintenance Costs related to E...

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IEEE Energy Conversion Congress and Exposition, ECCE

作者： Eduardo Perez Liberato Matheus Bawden Caio Mateus Cardozo Rego Yan Tavares De Oliveira José Oniram de Aquino Limaverde Filho Thiago Felicio De Souza Ronan Gustavo Carvalho Furtado Eugênio Libório Feitosa Fortaleza Automation and Control Group (GRACO) University of Brasília - UnB Brasília Brazil Computer Science Department University of Brasília - UnB Brasília Brazil Electrical Engineering Department University of Brasília - UnB Brasília Brazil Furnas Eletrobras Rio de Janeiro Brazil

ISBN: (数字)9798350376067

ISBN: (纸本)9798350376074

The investment in non-dispatchable renewable energy sources (such as solar and wind) increased over the last decade in response to growing concerns about global warming. However, this phenomenon also increases the flexibility gap for the electrical grid regarding dispatchable energy sources, commonly combustion power plants. Considering such background, this study aims to evaluate the amount of resources it would cost only to have a ready-to-use power plant when needed, by evaluating the average and peak of the power consumption. The findings express a final amount of resources to serve as a basis to energy companies.

关键词： Hydraulic turbines Wind Costs Power demand Fitting Hydroelectric power generation Global warming Maintenance Fuels Investment

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A novel Zero-Defect Manufacturing approach for defect reduction in battery production

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Procedia CIRP 2025年 134卷 1167-1172页

作者： Ozan Emre Demir Marcello Colledani Gergely Horváth Donia Marzogui Konstantina Giakoumi Politecnico di Milano Department of Mechanical Engineering Via La Masa 1 20156 Milano Italy HUN-REN SZTAKI Institute for Computer Science and Control Kende u. 13-17 1111 Budapest Hungary Verkor 2-4 rue Charles Berthier 38000 Grenoble France Sunlight Group Neo Olvio 67200 Xanthi Greece

Li-ion batteries are fundamental components for the energy transition of the European ecosystem. Currently, Europe lags behind Asia in terms of Li-ion battery cell manufacturing, over 90% of the world’s production takes place in Far East. To overcome this situation, there is an ambitious ramp-up plan of 25 new gigafactories in Europe with an expected value of €35 bn by 2030. However, during the ramp-up phase it is expected that a significant amount of deffective batteries and scrap, estimated between 15%-30%, will be generated due to the lack of knowledge-based methods for production quality improvement in the battery sector. This paper presents the innovative features of the Zero-Defect Manufacturing approach for battery production lines proposed by the BATTwin project. The solution encompasses four interconnected layers: (i) a multi-sensor data acquisition and management layer, supported by data semantics through a Digital Battery Passport compliant data model; (ii) process-level digital twins, modeling the critical stages of electrode manufacturing, cell assembly and conditioning through multi-physics, data-driven and hybrid approaches; (iii) system-level models, based on simulation and analytical modeling; (iv) user-centric, goal-driven workflows, increasing the explainability of digital twins and driving the user in system design and control. The current progress of the proposed approach and the future validation plan to meet target KPIs are discussed for two industrial pilots producing different battery chemistries and geometries, demonstrating the flexibility and scalability of the approach towards Zero-Defect European Gigafactories.

关键词： Digital Twin Manufacturing Battery

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On the Output Redundancy of LTI Systems: A Geometric Approach with Application to Privacy

arXiv

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arXiv 2024年

作者： Yang, Guitao Gallo, Alexander J. Barboni, Angelo Ferrari, Riccardo M.G. Serrani, Andrea Parisini, Thomas The Department of Electrical and Electronic Engineering Imperial College London LondonSW7 2AZ United Kingdom The Delft Centre for Systems and Control Technical University of Delft Delft Netherlands The Zurich Insurance Group Zurich Switzerland The Department of Electrical and Computer Engineering The Ohio State University ColumbusOH43210 United States The Department of Electronic Systems Aalborg University Denmark The Department of Engineering and Architecture University of Trieste Italy

This paper examines the properties of output-redundant systems, that is, systems possessing a larger number of outputs than inputs, through the lenses of the geometric approach of Wonham et al. We begin by formulating a simple output allocation synthesis problem, which involves "concealing" input information from a malicious eavesdropper having access to the system output, while still allowing for a legitimate user to reconstruct it. It is shown that the solvability of this problem requires the availability of a redundant set of outputs. This very problem is instrumental to unveiling the fundamental geometric properties of output-redundant systems, which form the basis for our subsequent constructions and results. As a direct application, we demonstrate how output allocation can be employed to effectively protect the information of input information from certain output eavesdroppers with guaranteed results. Copyright © 2024, The Authors. All rights reserved.

关键词： Mobile telecommunication systems

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Force-Based Pose Regulation of a Cable-Suspended Load Using UAVs with Force Bias

Force-Based Pose Regulation of a Cable-Suspended Load Using ...

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IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)

作者： C. Gabellieri M. Tognon D. Sanalitro A. Franchi Robotics and Mechatronics (RaM) group EEMCS faculty University of Twente Enschede The Netherlands CNRS Inria IRISA Univ Rennes Rennes France LAAS-CNRS CNRS Université de Toulouse Toulouse France Electrical electronic and computer engineering department University of Catania Catania Italy Department of Computer Control and Management Engineering Sapienza University of Rome Rome Italy

This work studies how force measurement/estimation biases affect the force-based cooperative manipulation of a beam-like load suspended with cables by two aerial robots. Indeed, force biases are especially relevant in a force-based manipulation scenario in which direct communication is not relied upon. First, we compute the equilibrium configurations of the system. Then, we show that inducing an internal force in the load augments the robustness of the load attitude error and its sensitivity to force-bias variations. Eventually, we propose a method for zeroing the load position error. The results are validated through numerical simulations and experiments.

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