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International Conference on control, automation and systems ( ICCAS)

作者： Sebastián Espinel-Ríos Rudolph Kok Steffen Klamt José L. Avalos Rolf Findeisen Analysis and Redesign of Biological Networks Max Planck Institute for Dynamics of Complex Technical Systems Magdeburg Germany Department of Chemical and Biological Engineering Princeton University Princeton United States Institute for Automation Engineering Otto von Guericke University Magdeburg Magdeburg Germany Control and Cyber-Physical Systems Laboratory TU Darmstadt Germany

Microbial consortia are promising biotechnological production systems with the potential to divide complex metabolic pathways into smaller submodules, as well as make products and consume substrates that monocultures cannot. Maintaining optimal cell population levels and preventing mono culture formation challenge bioproduction by microbial consortia. Optogenetics allows for regulating the expression of key growth-regulatory genes through light to modulate cell population levels. Model-based dynamic optimization can determine optimal light trajectories and inoculum sizes that maximize product synthesis while satisfying system constraints, e.g., safety, economic, or technical aspects. Further-more, closed-loop dynamic optimization can address system uncertainty to a certain extent; however, its implementation is challenging due to limited online sensors. Alternatively, here we propose to perform open-loop optimization with batch-to-batch model adaptation based on Gaussian processes for maximizing bioproduction by optogenetically assisted consortia. The proposed approach enables knowledge transfer from existing to new models, improving predictability and optimization performance in each batch while avoiding costly and time-consuming modeling experiments. Compared to closed-loop optimization, this strategy is easier to implement as it does not rely on online monitoring, contributing to the state of the art in optimizing bioproduction by microbial consortia. We outline the applicability of the approach using simulation experiments of an optogenetically assisted consortium for the biosynthesis of the flavonoid naringenin, considering both parameter and model structure uncertainty.

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Line-of-sight based three-dimensional path following control for an underactuated robotic dolphin

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Science China(Information Sciences) 2021年第1期64卷 215-226页

作者： Jincun LIU Zhenna LIU Junzhi YU State Key Laboratory for Turbulence and Complex System Department of Mechanics and Engineering ScienceBIC-ESATCollege of EngineeringPeking University Department of Electrical and Automation Shandong Labor Vocational and Technical College State Key Laboratory of Management and Control for Complex Systems Institute of AutomationChinese Academy of Sciences

This paper investigates the three-dimensional(3-D) path following control problem for an underactuated robotic dolphin. With a comprehensive consideration of the mechanical constraint and swimming principle of the robotic dolphin, a decoupling motion strategy is proposed to produce yaw and pitch maneuvers simultaneously. Then, kinematics and dynamics models for 3-D dolphin-like swimming are established,followed by simulations of the path following control. Furthermore, a novel lookahead based 3-D line-ofsight(LOS) guidance law is developed and implemented to obtain desired attitude angles with its simplicity,intuitiveness, and small computational footprint. Finally, simulation results illustrate the feasibility and effectiveness of the proposed path following control methods.

关键词： robotic dolphin path following 3-D LOS guidance law decoupling motion

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The Electrotechnical Complex of The Grain Thrower With Improved Performance Characteristics

The Electrotechnical Complex of The Grain Thrower With Impro...

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International Conference on Modern Electrical and Energy systems (MEES)

作者： Evgeniia Burdilna Serhii Serhiienko Hennadii Rykov Roman Voliansky Department of Automation and Information Systems Kremenchuk Mykhailo Ostrohradskyi National University Kremenchuk Ukraine Department of Systems of Automatic Control and Electric Drive Kremenchuk Mykhailo Ostrohradskyi National University Kremenchuk Ukraine Department of Electrical Engineering Kremenchuk Mykhailo Ostrohradskyi National University Kremenchuk Ukraine Department of Electromechanical Systems Automation and Electrical Drives National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” Kyiv Ukraine

ISBN: (纸本)9798350346848

In the work, the structure of an interconnected electrotechnical complex of frequency-regulated electric drives of the mechanisms of grain-throwing machines is proposed to ensure effective overloading of grain with a reduction in its injury. The basic equations for determining the laws governing the grain flight trajectory are presented. The results of research on the influence of various parameters on the flight trajectory (thickness of the grain layer, presence of additional blowing) are given. The obtained results of the study allow us to state that additional blowing ensures a reduction in dispersion, depending on the type of grain and the speed of the conveyor belt of the grain thrower As a result, a regression model was obtained that allows taking into account the main parameters. The simulation results of the proposed electric fan drive system with scalar control with the control algorithm based on the PID structure, calculated according to the frequency criterion, are presented. A functional diagram of the electrical complex of the grain thrower is proposed. The practical application of the proposed system will reduce material damage from injury to the reloaded grain and improve the efficiency of the grain thrower.

关键词： Fans Automatic frequency control Simulation Microprocessors Optimal control Drives Mathematical models

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DC-DC Converters Optimization in Case of Large Variation in the Load

arXiv

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arXiv 2024年

作者： Domyshev, Alexander Chistyakova, Elena Dreglea, Aliona Sidorov, Denis Liu, Fang Melentiev Energy Systems Institute Siberian Branch Russian Academy Sciences Irkutsk Russia Harbin Institute of Technology Harbin China Irkutsk National Research Technical University Irkutsk Russia Institute for System Dynamics and Control Theory Siberian Branch Russian Academy Sciences Irkutsk Russia Department of Automation Central South University Changsha China

The method for controlling a DC-DC converter is proposed to ensures the high quality control at large fluctuations in load currents by using differential gain control coefficients and second derivative control. Various implementations of balancing the currents of a multiphase DC-DC converter are discussed, with a focus on achieving accurate current regulation without introducing additional delay in the control system. Stochastic particle swarm optimization method is used to find optimal values of the PID controller parameters. An automatic constraint-handling in optimization are also discussed as relevant techniques in the *** Codes 34H05 34A09 © 2024, CC BY.

关键词： Stochastic systems

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Expanding conformal prediction to system identification

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Pattern Recognition 2025年 167卷

作者： Msaddi, Saleh Kumbasar, Tufan Artificial Intelligence and Intelligent Systems Laboratory Istanbul Technical University Istanbul34469 Turkey Control and Automation Engineering Department Istanbul Technical University Istanbul34469 Turkey

System Identification (SysID) is a cornerstone of control engineering, aimed at modeling system dynamics from input–output data. However, SysID approaches often overlook uncertainty quantification (UQ), which is crucial for robust decision-making. To address this gap, we propose Conformal System Identification (C-SysID), a model-agnostic framework for UQ in single-output and multiple-output SysID tasks. C-SysID transforms point predictions of any SysID model into High-Quality (HQ) Prediction Intervals (PIs) for single-output systems or Prediction Regions (PRs) for multiple-output systems, ensuring the true output is captured within the specified confidence level. For single-output systems, we use the Updated Residuals (UR) and Weighted Updated Residuals (WUR) methods to generate valid HQ PIs. In the case of multiple-output systems, we apply the Copula method and introduce the Updated Copula (UC) method, which captures output dependencies to generate HQ PRs. We empirically validate C-SysID on diverse single-output and multiple-output SysID datasets. The statistically significant comparative results show that the WUR method outperforms baseline methods, delivering tight PIs with the desired coverage. For multiple-output systems, our proposed UC method generates PRs that achieve accurate joint coverage while maintaining the compactness of PRs. The results highlight the effectiveness of C-SysID in UQ and enhancing uncertainty-aware predictions for SysID applications. © 2025 Elsevier Ltd

关键词： Parameter estimation

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Modeling, analysis and experimental observations of fat volume properties in compartmental models for drug pharmacokinetics

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Annual Reviews in control 2025年 60卷

作者： Amani R. Ynineb Bouchra Khoumeri Erhan Yumuk Bora Ayvaz Ghada Ben Othman Clara M. Ionescu Dana Copot Ghent University Department of Electromechanics Systems and Metal Engineering Research Group on Dynamical Systems and Control Technologiepark 125 Gent 9052 Belgium Istanbul Technical University Department of Control and Automation Engineering 34469 Istanbul Turkey

Drug related dynamic uptake, clearance and anomalous diffusion patterns are dependent of biological tissue composition. Of particular importance is the fat volume, where drug trapping occurs in long term usage and related to lipophilic properties of drugs and non-homogeneous mixing. This paper introduces three probable drug pathways from fat volumes to augmented compartments, herein called trap volumes. In silico validation by using patient simulators with body mass index larger than 25. A non-homogeneous drug diffusion in biological tissue was considered using the partial-Caputo fractional-order compartmental model. To understand the effects in potential monitoring and sensing data information systems, an experiment has been proposed for in vitro impedance spectroscopy of fat samples. Variability with fat volume in observed data confirms the fractional-order characteristics that support theoretical model assumptions. A discussion section provides the implications for control of drug delivery systems.

关键词： Fractional-order impedance model Compartmental model Fractal kinetics Spectroscopy Pharmacology Digital simulator Experimental validation

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Development and validation of preliminary fractional order impedance models for experimental pain assessment

Development and validation of preliminary fractional order i...

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2021 IEEE International Conference on Electrical, Computer, Communications and Mechatronics Engineering, ICECCME 2021

作者： Birs, Isabela Muresan, Cristina Ghita, Mihaela Ghita, Maria Copot, Dana Neckebroek, Martine Ionescu, Clara Technical University of Cluj-Napoca Automation Department Cluj-Napoca Romania DySC Research Group on Dynamical Systems and Control Ghent University Belgium Core Lab EEDT Flanders Make Consortium Ghent Belgium Ghent University Hospital Dept. of Anesthesia and Perioperative Medicine Belgium

ISBN: (纸本)9781665412629

The present study presents the development of an impedance based fractional order model that describe the dynamics of pain assessment based on experimental data. Bioimpedance spectroscopy is used to acquire real-life electrodermal responses from a healthy subject undergoing induced acute pain. The measurements register both normal epidermal values in the absence of pain and bioimpedance measurements at the presence of sudden, acute, pain. The aim is to develop a general model that describes the feeling of pain in the presence/absence of active stimulus. The complex dynamics of the acquired data suggest the usage of fractional calculus, a powerful tool that provides a versatile and efficient solution of modeling complex physical phenomena. The proposed models are obtained using constrained optimization routines and are successfully validated on the real life data. © 2021 IEEE.

关键词： Constrained optimization

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Principles of Safety Signalling and Traffic control systems Synthesis on Railways

Principles of Safety Signalling and Traffic Control Systems ...

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International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM)

作者： Dmitrii V. Efanov Valerii V. Khóroshev German V. Osadchy Higher School of Transport Institute of Mechanical Engineering Materials and Transport Peter the Great St. Petersburg Polytechnic University St. Petersburg Russian Federation Department of "Automation Remote Control and Communication on Railway Transport" The Russian University of Transport Moscow Russia Department of "Automation Remote Control and Communication on Railway Transport" Russian University of Transport (MIIT) Moscow Russia Deputy General Director – Chief Engineer of Scientific and Technical Center "Integrated Monitoring Systems" LLC St. Petersburg Russia

The paper authors analyze the safety control systems synthesis problem for critical technological processes on the railway signalling and automation systems. It is shown that modern control systems for complex distributed systems, such as a railway transport system, are not implemented with absolute safety. Such systems safety is limited by considering only their own failures, control systems and their components external failures, as well as infrastructure objects failures that directly interact with control devices. Other infrastructure facilities are not considered in any way during automatic control and data transfer to on-board automation. We presents the theoretical principles for the safety train traffic control system synthesis, considering the capabilities of equipping infrastructure facilities with highly reliable and safe means of technical diagnostics and monitoring. A simplified structure of the central train traffic control complex is given, considering the diagnosing and monitoring results of all transportation process components. The conditions for the completely safety train traffic control systems synthesis are formulated. The tasks going with the safe control system synthesis problem are noted. The railway infrastructure facilities and rolling stock parameters comprehensive accounting will allow reaching a qualitatively higher level of train traffic safety.

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Integrated Simulation of Process of Steel Casting on the Continuous Steel Casting Unit 2

Integrated Simulation of Process of Steel Casting on the Con...

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2nd International Conference on control systems, Mathematical Modeling, automation and Energy Efficiency, SUMMA 2020

作者： Galkin, Alexander Pimenov, Vladimer Saraev, Pavel Tyrin, Dmitry Lipetsk State Technical University Faculty of Automation and Computer Science Lipetsk Russia Novolipetsk Steel Corporation Lipetsk Russia Lipetsk State Technical University Department of Automated Control Systems Lipetsk Russia

ISBN: (纸本)9781728188409

Studying technological processes on real production equipment is associated with a large costs of resources: financial, time, etc. Therefore, various types of modeling are actively used to analyze and optimize these processes. With the development of digital technologies, it is possible to collect data about the process directly during the production. This data can be used both for direct control of the process, and for building (adjusting) the model of the process, which allows to get a "digital twin"repeating both the main properties of the modeled object and its current state. Many complex manufacturing processes involve a set of different interconnected models. In this case, the "digital twin"should contain information about the object characteristics, individual models of its functioning, the connections between these models, and the current state. These processes include many stages of metallurgical production. The paper considers complex modeling of the casting process in continuous steel casting unit. The set of models includes a model of the thermal state of the ingot during casting, a model of the stress-strain state, a model of the melt hydrodynamics, structural and concentration models of the ingot. Mathematical models of thermal and stress-strain states and the connections between them are presented. Examples of temperature fields and deformations calculation during the process of casting are given. © 2020 IEEE.

关键词： Steel ingots

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Modeling, Analysis and Simulation of the Effect of Temperature on Magnetostrictive Actuators

Modeling, Analysis and Simulation of the Effect of Temperatu...

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International Conference on Fluid Power and Mechatronics (FPM)

作者： Xinyuan Zhang Shaoping Wang Yu Niu Xiao Wu Xingjian Wang Alex I. Gavrilov School of Automation Science and Electrical Engineering Beihang University Beijing China Tianmushan Laboratory Hangzhou China Ningbo Institute of Technology Beihang University Ningbo China Research Institute of Aero-Engine Beihang University Beijing China Department of Automatic Control Systems Bauman Moscow State Technical University Moscow Russia

ISBN: (数字)9798350304947

ISBN: (纸本)9798350304954

The increased demand for active control of engines has made the study of high-frequency response actuators increasingly important, and actuators based on magnetostrictive materials are promising for a wide range of applications. In this paper, the magnetic field distribution and various thermal losses including Joule heat loss, eddy current loss and hysteresis loss inside the giant magnetostrictive actuator (GMA) are analyzed, and the mathematical model of the current-driven GMA operation is derived, where the new J-A model considering the temperature effect is used to describe the hysteresis nonlinearity of the material. This paper simulates the actuator model under the action of multiple physical fields in COMSOL, focusing on the variation of the output displacement of the actuator when the thermal field and thermal expansion are integrated, and provides the theoretical basis for the design of the GMA control algorithm in the future.

关键词： Actuators Analytical models Thermal expansion Temperature distribution Mechatronics Magnetostriction Magnetic hysteresis

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