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

作者： Janetta Culita Dan Stefanoiu Andreea-Maria Nica Department of Automatic Control and Systems Engineering University “Politehnica” of Bucharest Romania Faculty of Automatic Control and Computers University “Politehnica” of Bucharest Romania

The purpose of this article is to perform a comparison between two identification models: a nonlinear one referred to as HARMAX and a classical linear one, of Box-Jenkins (BJ) type. The first model modifies a classical ARMAX model by applying Hammerstein polynomials on input, output, and noise signals. Identification of models was performed by means of Multi-Step Least Squares Method, as described into the article. The simulations on a real-world plant, namely ASTANK2, a fluidic system with two inputs, two outputs and nonlinear static characteristic, have proven that the HARMAX model performs better than the BJ model and provides more accurate useful models to be integrated into closed loop configurations.

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Stability and the Separation Principle in Output-Feedback Stochastic MPC with Random Packet Losses

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IFAC-PapersOnLine 2023年第2期56卷 3818-3823页

作者： Paul Trodden Paulo Loma-Marconi Iñaki Esnaola Department of Automatic Control & Systems Engineering University of Sheffield Sheffield S1 3JD UK

This paper considers a linear quadratic Gaussian (LQG) control problem with constraints on system inputs and random packet losses occurring on the communication channel between plant and controller. It is well known that, in the absence of constraints, the Separation Principle between estimator and controller holds when the channel employs a TCP-like protocol but not so under a UDP-like protocol. This paper gives a counterexample that shows that, under a model predictive control (MPC) scheme that handles the constraints, the Separation Principle does not hold even in the TCP-like case. Theoretical analysis characterizes and reveals a trade-off between estimation errors in the estimator and prediction errors in the controller. Counterintuitively, the poorer on-average performance of the estimator in the UDP case may be compensated by smaller prediction errors in the controller.

关键词： control and estimation with data loss Predictive control Kalman filtering Stochastic optimal control problems

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Implementation of Justified Inspection Zone for Fault Location on Overhead Transmission Lines of 110 kV and Above

Implementation of Justified Inspection Zone for Fault Locati...

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International Youth Conference on Radio Electronics, Electrical and Power engineering (REEPE)

作者： Dmitriy Sharygin Galina Filatova Andrey Yablokov Department of electric power systems automatic control Ivanovo State Power Engineering University (ISPU) Ivanovo Russia

The existing normative and technical documentation of operating organizations does not allow for the reliable organization of the minimal possible inspection zone. The article presents research on the implementation of justified inspection zone for fault location on overhead transmission lines of 110 kV and above. The fault location research was carried out on an imitation model in the Simulink / MATLAB software package. Fault location formulae developed by the authors were used under consideration of multitude factors influencing the measurement using the Monte Carlo method. Only the methodological error of fault location was taken into account in the calculation for the implementation of the inspection zone. The most probable (justified) inspection zone was calculated based on the values of fault locations obtained using the calculation formulae. The generalized Gaussian distribution (GGD) and the functions of mathematical expectation and standard deviation were used to implement the justified inspection zone.

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A suite of MATLAB livescript files to support learning of elementary control and feedback concepts

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IFAC-PapersOnLine 2023年第2期56卷 7555-7560页

作者： J.A. Rossiter Department of Automatic Control and Systems Engineering University of Sheffield Sheffield S1 3JD UK

This paper builds on a body of work in the community which is focussed on sharing learning and teaching resources, especially those which might support a first course in control. Here attention is given to some of the mathematical, analytical and numerical computations which are required to support simple system and feedback analysis and design. The aim is to provide resources which allow students to focus on core concepts and understanding so that the numerical computations are not an obstacle to their investigations. More specifically, this paper focuses on a number of MATLAB livescript files which have been produced to help students visualise the impact of parameter and design choices on system behaviour, while simultaneously empowering them to understand the source code and thus upskill them for the future. The paper gives an overview of the livescripts available so users can decide whether these could be useful in their own context; all are freely available on the author's website (Rossiter, 2021).

关键词： Virtual laboratories independent learning visualisation livescripts

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Driver Behaviour Soft-Sensor based on Neurofuzzy systems and Weighted Projection on Principal Components

arXiv

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arXiv 2025年

作者： Escaño, Juan Manuel Ridao-Olivar, Miguel A. Ierardi, Carmelina Sánchez, Adolfo J. Rouzbehi, Kumars Department of Systems Engineering and Automatic Control Universidad de Sevilla Sevilla41092 Spain Department of Engineering Universidad Loyola Andalucía Sevilla41704 Spain

This work has as main objective the development of a soft-sensor to classify, in real time, the behaviors of drivers when they are at the controls of a vehicle. Efficient classification of drivers’ behavior while driving, using only the measurements of the sensors already incorporated in the vehicles and without the need to add extra hardware (smart phones, cameras, etc.), is a challenge. The main advantage of using only the data center signals of modern vehicles is economical. The classification of the driving behavior and the warning to the driver of dangerous behaviors without the need to add extra hardware (and their software) to the vehicle, would allow the direct integration of these classifiers into the current vehicles without incurring a greater cost in the manufacture of the vehicles and therefore be an added value. In this work, the classification is obtained based only on speed, acceleration and inertial measurements which are already present in many modern vehicles. The proposed algorithm is based on a structure made by several Neurofuzzy systems with the combination of projected data in components of various Principal Component Analysis. A comparison with several types of classical classifying algorithms has been made. © 2025, CC BY.

关键词： Smartphones

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Oligopoly Game Stabilisation Through Multilayer Congestion Dynamics

arXiv

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arXiv 2024年

作者： Willis, Toby Punzo, Giuliano Department of Automatic Control and Systems Engineering University of Sheffield Street South Yorkshire Sheffield100190 United Kingdom

International trade and logistics are subject to factors including geopolitical instability, climate change, and black swan events such as the unforeseen closure of the Suez Canal. The problem of predicting local price change under modification of an underlying transport network or change in supply characteristics unites elements of game theory, network theory and transport. The Cournot Oligopoly models economic actors as rational players attempting to maximise profit by optimising supply quantities with analytical results now consolidated about equilibrium characteristics where transport conditions are fixed. Similarly, where supply and demand are fixed, the routing of goods in a transport network can be analytically solved through a traffic assignment problem. Hence we can solve the coupled Cournot-congestion problem by means of a 2-layer network. Where the layers are linked, inter-layer feedback wherein players attempt to maximise their utility occurs. In this respect we find players benefit from taking advantage of non-simultaneous responses to the market rather than moving to a new equilibrium. We draw conclusions about the nature of equilibria, finding that the concave utility curve property results in unique and stable equilibrium for each uncoupled layer, while linked layers have a non-unique stable equilibria for which general solutions are stated. © 2024, CC BY.

关键词： International trade

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Automated Method for the Research of the Relay Protection Function Implemented in 6(10) kV Digital Instrument Transformers Using Real Oscillograms

Automated Method for the Research of the Relay Protection Fu...

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International Russian Automation Conference (RusAutoCon)

作者： Galina Filatova Dmitry Piskunov Alexey Evdakov Department of electric power systems automatic control Ivanovo State Power Engineering University (ISPU) Ivanovo Russia

ISBN: (数字)9798350349818

ISBN: (纸本)9798350349825

The increasing of automation and digitization of 6(10) kV distribution networks remains a relevant task. The solution of this task may be associated with the widespread implementation of digital instrument transformers and devices based on them. The article is dedicated to the development of a methodology of the function for determining the faulted section at a single-phase ground fault (SPGF) implemented in a digital instrument transformer 6(10) kV. The methodology involves the modeling of electromagnetic transient processes on the Real Time Digital Simulator (RTDS). The research is carried out on a model of a 10 kV electrical network area with the simulation of various types of single-phase ground faults (e.g. arc faults). The model parameters are varied automatically using a «script». Additionally, a database of real oscillograms containing single phase to ground faults is created to validate the function. The article discusses the main features of data collection and processing specific to the electrical energy sector. The oscillograms obtained from models and real energy objects will be used for conducting high-voltage laboratory tests of digital instrument transformers and the faulted section determination function. The test facility diagram is presented in the article.

关键词： Instrument transformers Automation Test facilities Sensitivity Computational modeling High-voltage techniques Distribution networks Real-time systems Steady-state Reliability

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An Interacting Multiple Model Approach Based on Maximum Correntropy Student's T Filter

An Interacting Multiple Model Approach Based on Maximum Corr...

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

作者： Fethi Candan Aykut Beke Lyudmila Mihaylova Automatic Control and Systems Engineering University of Sheffield Sheffield United Kingdom Department of Control Systems Design ASELSAN Ankara Turkiye

This paper presents a novel approach called the Interacting Multiple Model (IMM)-based Maximum Correntropy Student's T Filter (MCStF), which addresses the challenges posed by non-Gaussian measurement noises. The MCStF demonstrates superior performance compared to the IMM algorithm based on Kalman Filters (KFs) in both simulation environments and real-time systems. The Crazyflie 2.0 nano Unmanned Air Vehicle (UAV) model is used in the simulation validation, and results from 3000 independent Monte Carlo runs are shown. After getting the simulation results under monotonously changed non-Gaussian distribution, their performance results have been compared to each other. The same scenario has been applied in the real-time system using Crazyflie 2.0. Next, results from real-time tests are presented in which the position of Crazyflie 2.0 is estimated online.

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Robotic Assembly of Aviation Fuel Probes and Parameters Optimisation Using Bees Algorithm

Robotic Assembly of Aviation Fuel Probes and Parameters Opti...

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IEEE International Conference on Industrial Technology (ICIT)

作者： Xiaoguo Lin Mo Qu Marc Auledas Noguera Ashutosh Tiwari Yongjing Wang Department of Mechanical Engineering University of Birmingham Birmingham United Kingdom Department of Automatic Control and Systems Engineering University of Sheffield Sheffield United Kingdom

ISBN: (数字)9798350340266

ISBN: (纸本)9798350340273

Robots for automated assembly are being progressively implemented in the aerospace manufacturing sector. The dim and complex internal structure of the aircrafts significantly complicates the operation of robotic arms through visual system. This paper proposes an assembly strategy based on force-feedback control for fuel probe installation inside the aircraft wings, enabling autonomous assembly of tubular objects under translational and rotational misalignments. Furthermore, the Bees Algorithm (BA) is employed in a simulation environment to optimise the parameters of this control strategy. The results demonstrate that BA can effectively decrease the overall installation time while simultaneously proving the effectiveness of this method and its potential applicability in aerospace manufacturing.

关键词： Bees algorithm Robotic assembly Service robots Visual systems Fuels Aircraft manufacture Probes

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Research to Improve the Quality of Servo Motor controller 5

Research to Improve the Quality of Servo Motor Controller

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5th International Conference on control in Technical systems, CTS 2023

作者： Giang, Hoang Thi Thu Chung, Phan Thanh Van, Tran Thuy Khanh, Nguyen Duy HaNoi University of Industry Faculty of Electrical Engineering Hanoi Viet Nam Military Institute of Mechanical Engineering Department for Standards Metrology and Quality Hanoi Viet Nam Saint Petersburg Electrotechnical University 'LETI' Department of Automatic Control Systems Saint Petersburg Russia

ISBN: (纸本)9798350304664

To overcome the disadvantages that traditional controllers bring, in this study, it is proposed to use fractional order controller PIλ instead of conventional PI controller, the research also focuses on improving the quality of the controller. the order controller itself by selecting the computational methods, the discretization methods, and the implementation methods that give the best results. The study conducted simulations and experiments and compared the results with conventional PI controllers, in order to demonstrate the effectiveness of the fractional order controller. © 2023 IEEE.

关键词： controllers

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