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DISTANCE BETWEEN SPECIES BY CONFUSION OPERATORS OF MULTI-CLASS CLASSIFIERS

UPB Scientific Bulletin, Series A: Applied Mathematics and Physics 2025年第1期2025卷 171-182页

作者： Tarbă, Nicolae Irimescu, Ionela N. Pleavă, Ana M. Scarlat, Eugen N. Mihăilescu, Mona Doctoral School Computer Science and Engineering Department Faculty of Automatic Control and Computers National University of Science and Technology POLITEHNICA Bucharest Romania Applied Sciences Doctoral School National University of Science and Technology POLITEHNICA Bucharest Romania CAMPUS Research Center National University of Science and Technology POLITEHNICA Bucharest Romania Physics Dept National University of Science and Technology POLITEHNICA Bucharest Romania Physics Dept Research Center for Applied Sciences in Engineering National University of Science and Technology POLITEHNICA Bucharest Romania

We introduce a method to evaluate the similarities between classes of objects based on the confusion matrices coming from the multi-class machine learning (ML) predictors that operate in the vector space generated by the classes. Operation in the confusion domain allows us to use the distance as evaluation metric of the closeness of the relevant properties carried by the classes. We applied the method to semiquantitatively evaluate the effects of X-ray and carbon ion radiation on cultured SW1353 chondrosarcoma cells with respect to the non-irradiated reference. We prove that it is possible to draw useful information on the strength of cells nuclei changes. © 2025, Politechnica University of Bucharest. All rights reserved.

关键词： Radiation effects

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PI Passivity-based control of a Stand-alone Three-phase Current Source Inverter ⁎

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IFAC-PapersOnLine 2024年第13期58卷 362-367页

作者： Pau Boira-Pujol Romeo Ortega Arnau Dória-Cerezo Robert Griñó Institute of Industrial and Control Engineering Universitat Politècnica de Catalunya 08028 Barcelona Spain Departament of Electrical Engineering ITAM Ciudad de México Mexico Dept. of Electrical Engineering and Inst. of Industrial and Control Engineering Universitat Politècnica de Catalunya 08028 Barcelona Spain Dept. of Automatic Control and Inst. of Industrial and Control Engineering Universitat Politècnica de Catalunya 08028 Barcelona Spain

This paper presents the design of a Proportional-Integral Passivity-based controller (PI-PBC) for a current source inverter feeding a resistive load. Thanks to the definition of a new passive output, the closed-loop system is shown to be globally asymptotically stable. This result solves the internal stability problem reported for these power converters. To robustify the control algorithm, the paper also includes the design of a parameter estimation scheme for the parasitic resistances and the load conductance. Numerical simulations are carried out to validate the control algorithm. The simulation stage compares the behaviour using the averaged model of the power converter and a more realistic switching model, including the three-phase implementation.

关键词： Current source inverter Passivity-based control Proportional-Integral controllers parameter estimation

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Distributed Reconfiguration of Distance-Based Formations with Virtual Surface Constraints

Distributed Reconfiguration of Distance-Based Formations wit...

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European control Conference (ECC)

作者： M. Guinaldo J. SánchezMoreno S. Zaragoza F. J. Mañas-Álvarez Dept. Computer Science and Automatic Control UNED Madrid Spain Centro Universitario de la Defensa San Javier Murcia Spain

ISBN: (数字)9783907144107

ISBN: (纸本)9798331540920

This paper proposes a method to recover from the failure or loss of a subset of agents in a distance-based formation problem, where the system is initially deployed forming a virtual shield embedded in the 3D space. First, a distributed algorithm is proposed to restore the topology, which is a Delaunay triangulation. After that, the nodes execute a distance-based distributed control law that considers adaptive target distances. These values are computed in parallel by the nodes, which try to reach an agreement with some constraints, given by the desired shield shape. The updating policy is based on events. The results are illustrated through simulation examples.

关键词： Three-dimensional displays Shape Decentralized control Europe Aerospace electronics Topology Distributed algorithms

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Energy Demand Management in an Industrial Manufacturing Plant using MPC and Neurofuzzy Models

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IFAC-PapersOnLine 2023年第2期56卷 8738-8743页

作者： Javier Gómez William D. Chicaiza Juan M. Escaño Carlos Bordons Dept. System Engineering and Automatic Control Universidad de Sevilla Spain ENGREEN - Laboratory of Engineering for Energy and Environmental Sustainability Universidad de Sevilla Spain

An MPC controller is proposed to maximise the use of renewable energy in a manufacturing process. The strategy has been applied in a manufacturing system which has several machines, renewable generation resources, a combined heat and power (CHP) generator for power production, and a battery bank for energy storage. The work aims to maximise the use of renewable energy sources in this process, also taking into account the price of the electricity market, to reduce the cost. The use of neurofuzzy models for the prediction of the energy produced by renewable generators allows a dynamic prediction, using input values obtained from typical forecasting variables (wind speed, global irradiance, etc.).

关键词： Manufacturing processes Model Predictive control Neurofuzzy systems Energy management systems Genetic algorithms Intelligent control

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Sallen-Key Dual Channel Low-Pass Filter with Tunable Cutoff Frequency

Sallen-Key Dual Channel Low-Pass Filter with Tunable Cutoff ...

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2022 IEEE International Multi-Conference on engineering, computer and Information Sciences, SIBIRCON 2022

作者： Denisenko, Darya Yu. Prokopenko, Nikolay N. Butyrlagin, Nikolay V. Dept. of Information Systems and Radio Engineering DTSU Rostov-on-Don Russia Dept. of Automatic Control Systems SFU Rostov-on-Don Russia Dept. of Information Systems and Radio Engineering DTSU Institute for Design Problems in Microelectronics of RAS Zelenograd Rostov-on-Don Russia

ISBN: (纸本)9781665464802

A two-channel Sallen-Key low-pass filter on three non-inverting amplifiers is studied, which has the property of unrelated digital set of the upper cut-off frequency at constant index of the transmission coefficient in the bandwidth range. The restructuring of the upper cutoff frequency and the attenuation of the pole is carried out by modify the resistors' resistance of one in the upper channel of the low-pass filter. It is shown that a non-inverting amplifier in the lower channel of the low-pass filter can have a small value of the systematic zero bias voltage component, what is important for the operation of the low-pass filter at the input of analog-to-digital converters. It has been established that due to the construction of a low-pass filter according to a two-channel architecture, the requirement for the magnitude of the output static voltage of the upper channel is removed. The base equations of the new low-pass filter scheme are given and the summary modeling in the Micro-Cap was pictured. © 2022 IEEE.

关键词： Cutoff frequency

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Experimental Validation of the Capture Chamber Model in Mutriku MOWC Wave Power Plant

Experimental Validation of the Capture Chamber Model in Mutr...

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OCEANS

作者： Aitor J. Garrido Jon Lekube Amparo Villasante Izaskun Garrido Automatic Control Group - ACG Inst. of Research and Development of Processes - IIDP Automatic Control and Systems Engineering Dept. Faculty of Engineering of Bilbao University of the Basque Country (UPV/EHU) Bilbao Spain Automatic Control Group - ACG BiMEP – Biscay Marine Energy Armintza Bizkaia Spain Automatic Control Group - ACG Faculty of Engineering of Bilbao University of the Basque Country (UPV/EHU). Bilbao Spain

ISBN: (数字)9798350362077

ISBN: (纸本)9798350362084

Ocean wave energy has de potential to satisfy 15% of EU energy demand, cutting 136 MT/MWh off the CO2 emissions by 2050, as stated by the EU Energy Road Map. Analogously, the Spanish Renewable Energies Plan specifically highlighted the Spanish marine energy potential with special emphasis in wave energy. In this context, Oscillating Water Column (OWC) converters are maybe nowadays the most promising wave energy converters, with the potential capability of sea energy harnessing from diverse on-shore and floating structures. This paper presents an analytic modeling of the wave capture chamber for a fixed on-shore OWC wave power plant. The model is particularized and parameterized for the case of the Mutriku MOWC wave power plant, located in the Spanish Basque Country coast, and then validated using both measured real wave entry data and experimental generated output power from the plant

关键词： Renewable energy sources Power measurement Wave power Roads Sea measurements Predictive models Particle measurements

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Empowering citizens by a blockchain-Based Robinson list

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International Journal of computers and Applications 2022年第10期44卷 920-928页

作者： Cirillo, Albenzio Dalena, Vito Mauro, Antonio Mogavero, Francesco Pennino, Diego Pizzonia, Maurizio Vitaletti, Andrea Zecchini, Marco Fondazione Ugo Bordoni Roma Italy Roma Tre University–Eng. Dept. Roma Italy Sapienza University of Rome Department of Computer Control and Management Engineering Roma Italy

Robinson lists are adopted in many countries to protect phone subscribers against commercial spam calls. In its essence, they collect the denial of the subscribers to be contacted by marketing operators. Nowadays, all Robinson lists run as centralised services. Namely, citizens have to rely on trusted third parties for the management of their own choices. The Blockchain allows us to envision the development of a decentralised Robinson list in which citizens are finally empowered to autonomously manage their choices. In this paper, we present a proof-of-concept (PoC) of a decentralised Robinson list developed with the Algorand technology. To the best of our knowledge, this is the first attempt to implement a Robinson list on a blockchain technology. The PoC has been designed to support the requirements provided by Fondazione Ugo Bordoni, the manager of the Italian Robinson list. The evaluation of the PoC shows that our decentralised solution provides satisfactory performance, in terms of scalability, latency and costs, when compared to the current centralised service. © 2021 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Blockchain

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Research of Electromagnetic and Electromechanical Processes in High-Voltage Soft Start Devices with Gate Turn-Off Thyristors 5

Research of Electromagnetic and Electromechanical Processes ...

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5th IEEE International Conference on Modern Electrical and Energy System, MEES 2023

作者： Busher, Victor Chornyi, Oleksii Tytiuk, Valerii Glazeva, Oksana Shestaka, Anatoliy Melnikova, Lubov National University 'Odessa Maritime Academy' Dept. of Electrical Engineering and Electronics Odessa Ukraine Kremenchuk Mykhailo Ostrohradskyi National University Institute of Electromechanics Energy Saving and Automatic Control Systems Kremenchuk Ukraine Kryvyi Rih National University Kryvyi Rih Ukraine Odessa State Polytechnic University Dept. Electromechanical Engineering Odessa Ukraine

ISBN: (纸本)9798350359787

The purpose of the work is to investigate the possibilities of soft-start devices with gate turn-off thyristors in electric drives of bow thrusters with adjustable propeller pitch to increase reliability, reduce mechanical shocks and currents, and improve electromagnetic compatibility with the ship's electrical power plant. The characteristic features of these drives are operation on fan load and the need for a smooth start in a sufficiently short time to reduce impact torque in the mechanism. As a result of the analysis, a solution with a shunt capacitor is proposed, which provides high accuracy of regulation of the 1st harmonic of the voltage on the motor according to the given law. The minimum value of the capacitor capacity was found, which for the ABB/AMD710L8T motor with a capacity of 2.7 MW is 150-250 μF at switching frequencies from 500 to 1000 Hz. For the first time, the dependences of the GTO switching frequency on the capacitor capacity and the coefficient of harmonic distortion of the current in the stator phase of the selected motor were found. Frequencies are obtained that correspond to the actual physical characteristics of the GTO (500-1000 Hz). At such switching frequencies, the characteristics of the soft start device practically do not differ from the ideal regulator of the phase voltage of an asynchronous motor. This makes it possible to synthesize closed systems with stabilization of the main coordinates of soft starter electric drive, two-circuit systems with the formation of a given tachogram with torque limitation. All this makes it feasible to implement soft start devices based on gate turn-off thyristors. © 2023 IEEE.

关键词： Electric drives

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Usability of Industrial HMI Testing Method

Usability of Industrial HMI Testing Method

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International Conference on Process control (PC)

作者： Jakub Jura Cyril Oswald dept. of Automatic Control and Engineering Informatics Czech Technical University in Prague Prague Czech republic

The article deals with methods of usability testing of industrial SCADA/HMI interfaces such as graphical operator panels or control room visualization screens. Analysis of the designed HMI screens and quantitative and qualitative testing methods are used. Usability is estimated by measuring the reaction times of the defined test tasks and by the Eye Tracking methods. The proposed method for testing and evaluating the industrial HMI is presented as a case study. The method allows for to improvement the quality of industrial HMI. Especially its usability, reliability, and efficiency.

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Optimization Scheduling of Multi-Energy Microgrid Based on the QUBO Quantum Computing Model 19th

Optimization Scheduling of Multi-Energy Microgrid Based on t...

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19th Annual Conference of China Electrotechnical Society, ACCES 2024

作者： Wang, Baonan Wang, Hui Zhang, Dan College of Computer Science and Technology Shanghai University of Electric Power Shanghai China State Key Laboratory of Power System Operation and Control Dept. of Electrical Engineering Tsinghua University Beijing China Institute of Logistic Science and Engineering Shanghai Maritime University Shanghai China

ISBN: (纸本)9789819608966

Current optimization methods for microgrid scheduling face issues such as insufficient precision in energy distribution, high operational costs, and inefficiency. In response to these challenges, an optimization scheduling method for multi-energy microgrids based on the QUBO (Quadratic Unconstrained Binary Optimization) quantum computing model is proposed in this paper, alongside a discretization approach based on a grid partitioning strategy. To validate the feasibility of addressing microgrid optimization scheduling problems in a quantum computing environment, a QUBO model is constructed and simulation studies are conducted in the qbsolv environment provided by D-Wave. The results indicate that operational costs are significantly reduced with an increase in the number of grids, particularly a reduction of 4.52% when the number of grids increases from five to ten. This method not only effectively enhances the precision of electricity supply and energy utilization efficiency but also reduces unnecessary electrical waste and economic costs. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Microgrids

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