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6th International Conference on Energy, Electrical and Power engineering, CEEPE 2023

作者： Pan, Zhongmei Kong, Lingyuan Jenkins, Nick Tong, Xiangqian Xi'An University of Technology Dept. of Power Grid Information and Control Engineering Xi'an China Cardiff University Dept. of Electrical Engineering Cardiff United Kingdom

ISBN: (纸本)9798350348279

This paper discusses a black-start restoration control strategy using a battery energy storage station together with wind farms. The wind farm operates with the maximum power tracking control method, and the energy storage station adopts the V/ f control method to jointly act as the black-start resources. Soft energization is used to eliminate transformer inrush currents. A restoration sequence is designed to mitigate the transient impact by picking up critical load before connecting the wind turbines. The amount of the critical load is estimated considering the capacity and the state of charge of the energy storage station based on wind power prediction. Simulations are carried out in PSCAD/EMTDC to verify the effectiveness of the described strategy. © 2023 IEEE.

关键词： Secondary batteries

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Circuit Design Method of Rate Increase in Operational Amplifiers Based on the MH2XA031 Array Chip and CBJT Technological Routes

Circuit Design Method of Rate Increase in Operational Amplif...

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2024 Conference of Young Researchers in Electrical and Electronic engineering, ElCon 2024

作者： Titov, Alexey E. Kleimenkin, Dmitriy V. Prokopenko, Nikolay N. Southern Federal University Dept. of Automatic Control Systems Rostov-on-Don Russia Don State Technical University Dept. of Scientific Research Dept. of Information Systems and Radio Engineering Rostov-on-Don Russia

ISBN: (纸本)9798350360646

It has been revealed that in the conditions of small-scale production of discrete-analog filters on switched capacitors and ADC-drivers, it is most advisable to design high-speed operational amplifiers (OAs) based on the CBJT technological route and the MH2XA031 array chip, which allows operation in conditions of low temperatures and exposure to radiation. It has been established that most commercially produced O A s provide an average value of the slew rate (SR, up to 200 div 300 ~V / μ s). This is largely due to the limitations of the technologies used, and most importantly, to the irrational design of circuits. We study the maximum performance parameters of a CBJT OA with one integrating capacitor, which ensures the stability of the O A, and a differentiating transient correction circuit, which is implemented by connecting additional small capacitors to the original circuit. In this case, the S R of the O A increases by more than 500 times (up to 4000 ~V / μ s). © 2024 IEEE.

关键词： array chip CBJT operational amplifier slew rate

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Design and Construction of Vibration Level Monitoring Equipment on Machine Tools Based on the Internet of Things (IoT)

Design and Construction of Vibration Level Monitoring Equipm...

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2023 International Conference on information Technology and Computing, ICITCOM 2023

作者： Bismantolo, Putra Afrizal, Yuzuar Ramadani, Niska Anggriani, Kurnia University of Bengkulu Dept. of Mechanical Engineering Bengkulu38122 Indonesia University of Bengkulu Dept. of Civil Engineering Bengkulu38122 Indonesia University of Bengkulu Dept. of Information System Bengkulu38122 Indonesia

ISBN: (纸本)9798350359633

This research aims to design and implement an Internet of Things (IoT) based vibration and rotation sensor system that can be used on machine tools. These sensors are designed to collect vibration and rotation data from machine tools, and then transmit this data to an IoT platform for real-time analysis and monitoring. This research also includes the development of web-based applications to access and analyze sensor data efficiently. The blynk application will display velocity data and graphs from vibrations read by the ADXL335 accelerometer sensor. To identify the level of damage to a tools system in the industrial sector is to analyze the characteristics of vibrations caused by vibrations in general known from the magnitude of the vibration amplitude. The results of the monitoring tool made are tools that work using the concept of the Internet of Thing in monitoring the vibration value of the machine. The results of the test show the value of the vibration speed produced by the instrument is close to the same as the standard vibration meter. The largest error value is 3.03%. © 2023 IEEE.

关键词： Internet of things

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High-Speed Operational Amplifier Based On Complementary 'Folded' Cascodes 3

High-Speed Operational Amplifier Based On Complementary 'Fol...

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3rd IEEE International Conference on Problems of Informatics, Electronics and Radio engineering, PIERE 2024

作者： Kuznetsov, Dmitry V. Kleimenkin, Dmitriy V. Prokopenko, Nikolay N. Titov, Alexey E. Don State Technical University Dept. of Scientific Research Dept. of Information Systems and Radio Engineering Rostov-na-Donu Russia Don State Technical University Dept. of Information Systems and Radio Engineering Rostov-na-Donu Russia Southern Federal University Dept. of Automatic Control Systems Rostov-na-Donu Russia

ISBN: (纸本)9798331516321

A significant disadvantage of classical operational amplifiers with a complementary 'folded' cascode is that in the dynamic overload mode of the input differential stage, the maximum output current of the 'folded' cascode is tightly coupled to the currents of the current-stabilizing bipoles that establish its static mode. This prevents (under the static current consumption limitations of the operational amplifier) a fast recharge of the integrating correction capacitor, which limits the maximum slew rate of the output voltage. The paper discusses new circuit solutions of CBJT operational amplifier based on complementary 'folded' cascodes and input differential stage of dual-input stage subclass to increase slew rate from 215 V/μs to 8000 V/μs level. The problem solved here is to provide higher levels of 'folded' cascode output current during the transient edge. This effect is achieved by introducing three additional small capacitance correction capacitors into the circuit. It is possible to introduce a special current limiting resistor in series with the third additional capacitor to reduce overshoot during the transient edge. The proposed modifications of operational amplifier have significant advantages in comparison with the classical ones based on complementary 'folded' cascodes in terms of slew rate level. Results of computer modeling of the operational amplifier in LTSpice environment for silicon CBJT technological process with micron topological norms are presented. © 2024 IEEE.

关键词： Operational amplifiers

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Challenges in AI-supported Process Analysis in the Italian Judicial system: what After Digitalization?

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Digital Government: Research and Practice 2024年第1期5卷 1-10页

作者： Bianchini, Devis Bono, Carlo Campi, Alessandro Cappiello, Cinzia Ceri, Stefano De Luzi, Francesca Mecella, Massimo Pernici, Barbara Plebani, Pierluigi Dept. of Computer Science University of Brescia Via Branze 38 Brescia25123 Italy Dept. of Electronics Information and Bioengineering Politecnico di Milano Piazza Leonardo da Vinci 32 Milan20133 Italy Dept. of Computer Control and Management Engineering Sapienza Universitá di Roma Via Ariosto 25 Roma00185 Italy

In this commentary article, we outline research challenges and possible directions for the potential applications of AI in the judicial domain by specifically considering process analysis in the Italian context. Applying AI to process analysis poses several challenges, including information extraction from legacy information systems and analysis of legal documents, process modeling with a particular emphasis on temporal analysis, real-time process monitoring, conformance and compliance checking, predictive techniques for accurate predictions, and analysis of judges' workload. Solutions to these challenges include methods and tools for data identification and collection, innovative approaches to process modeling, reactive techniques for real-time monitoring, conformance checking with explainability, language models adapted to specific domains, and the identification of suitable indicators for the analysis of case handling efficiency and case classification. Copyright © 2024 held by the owner/author(s).

关键词： Process monitoring

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A Review of Rotation Mechanical Fault Diagnosis Research Based on Deep Domain Adaptation 9

A Review of Rotation Mechanical Fault Diagnosis Research Bas...

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9th IEEE International Conference on Big Data Computing Service and Applications, BigDataService 2023

作者： Zhang, Shun Xie, Gang Tian, Juan Shi, Hui Zhang, Xiaohong Nie, Xiaoyin Xie, Xinlin Shanxi Key Laboratory of Advanced Control and Equipment Intelligence Taiyuan China Taiyuan University of Science and Technology Dept. of Electronic and Information Engineering Taiyuan China Division of Industrial and System Engineering Taiyuan China

ISBN: (纸本)9798350333794

With the rapid development of computer technology and the Internet of Things (IoT), a large amount of data containing both healthy and faulty states can be collected from existing devices in factories. However, the usable faulty state data is scarce. Transfer learning makes it possible to train efficient and reliable neural networks with a small number of samples. Domain adaptation, as a branch of transfer learning, can effectively realize knowledge transfer between small sample data. Starting from three subcategories of deep learning-based domain adaptation methods, this article summarizes the latest research achievements and provides insights into future research directions. © 2023 IEEE.

关键词： Failure analysis

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Reinforcement Learning with Hierarchical Graph Structure for Flexible Job Shop Scheduling

Reinforcement Learning with Hierarchical Graph Structure for...

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2023 International Annual Conference on Complex systems and Intelligent Science, CSIS-IAC 2023

作者： Zhang, Linli Li, Dewei Shanghai Jiao Tong University Key Laboratory of System Control and Information Processing Ministry of Education of China Dept. of Automation Shanghai China

ISBN: (纸本)9798350309003

The flexible job shop scheduling problem (FJSP) is a NP-hard combinatorial optimization challenge, having extensive real-world industrial applications. For a given instance of FJSP, a scheduling solution need to be devised, which entails determining the appropriate machine for each operation and establishing the sequence in which operations are processed on a given machine, all while adhering to certain constraints. However, many of the methods are lacking in flexibility, unable to cope effectively with multi-relational operations and machine selection scenarios. This can make the representation of state and action challenging in practice, leading to a significant increase in decision complexity. This paper considers these issues by a hierarchical graph structure with a model that synergistically integrates two modules: the environment and the decision module. The environment module is characterized by a hierarchical graph neural network which defines the multi-relational FJSP instance where all machine and operation data are stored. The decision module incorporates the Actor-Critic networks, designed to train reasoning strategies and enhance decision performance, based on the states and rewards provided at each step by the environment module. The objective is to derive optimal scheduling strategies through interactions between the decision agent and the environment, targeting the minimum resources consumed or makespan. Numerical simulations validate the efficacy of the proposed approach, showing its potential to yield superior results and thereby enhance performance. © 2023 IEEE.

关键词： Reinforcement learning

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Synchronization of Measuring Devices for Forensic Crash Testing 5

Synchronization of Measuring Devices for Forensic Crash Test...

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5th IEEE International Conference on Communications, information, Electronic and Energy systems, CIEES 2024

作者： Vestenicky, Peter Kolla, Eduard University of Žilina Faculty of Electrical Engineering and Information Technology Dept. of Control and Information Systems Žilina Slovakia University of Žilina Institute of Forensic Research and Education Žilina Slovakia

ISBN: (纸本)9798350352863

The measurement of the dynamic parameters of vehicle motion is usually carried out by measuring the velocity of motion, accelerations and angular velocities in all three axes. For research applications, e.g. the DAS-3 with microwave velocity sensor from Corrsys Datron GmbH (now part of the Kistler Group) and the PicDaq5 from Dr. Steffan Datentechnik GmbH are used for this purpose. If the movement of the vehicle also needs to be documented by video, these three measuring devices need to be synchronized in time, e.g. by light pulses for the video and electrical pulses for the speed and acceleration meters. This paper describes the technical solution of the synchronization device, triggered manually during driving tests or by a ribbon switch in the case of measurements during crash tests. © 2024 IEEE.

关键词： Microwave sensors

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Analysis of Contactless Measurement Accuracy of RFID Transponder Resonant Frequency and Quality Factor 5

Analysis of Contactless Measurement Accuracy of RFID Transpo...

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5th IEEE International Conference on Communications, information, Electronic and Energy systems, CIEES 2024

作者： Vestenicky, Peter Palecek, Juraj University of Žilina Faculty of Electrical Engineering and Information Technology Dept. of Control and Information Systems Žilina Slovakia Amicus SK s.r.o. Skalica Slovakia

ISBN: (纸本)9798350352863

The article analyses the accuracy of contactless measurement of resonant frequency and quality factor of RFID transponders in a simplified measuring circuit that does not use an impedance meter nor vector network analyser. The described measurement does not use compensation for the influence of the measuring circuit on the results. This creates a systematic measurement error, the value of which is analysed. Such simplified measuring circuit is used for fast testing of the finalized RFID transponders in the factory when contact measurement is no longer possible. The measuring circuit works like a band-stop (notch) filter, and to measure the parameters of RFID transponders, it is sufficient to measure the absolute value of the transfer function, e.g. using a signal generator and a voltage level meter, but a spectrum analyser with a tracking generator can be faster alternative. The results of the analysis show the influence of individual parameters of the measuring circuit, including the parasitic ones, on the accuracy of the resonant frequency and quality factor measurement. © 2024 IEEE.

关键词： Transponders

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Spam Email Clustering by Ordered Pair of Modality: 2023 15th International Congress on Advanced Applied Informatics Winter (IIAI-AAI-Winter) 15

Spam Email Clustering by Ordered Pair of Modality: 2023 15th...

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15th International Congress on Advanced Applied Informatics Winter, IIAI-AAI-Winter 2023

作者： Matsuda, Takeshi Fujimaki, Takeshi Sonoda, Michio Hannan University Dept. Management and Information Technology Osaka Japan Chuo University Dept. Information and System Engineering Tokyo Japan National Cyber Training Center Nict Tokyo Japan

ISBN: (纸本)9798350383829

Cyber-attacks that deceive people in various ways, such as phishing scams that exploit personal information by pretending to be a real service, are gaining momentum. Scam email sometimes includes important keywords that are cleverly used to deceive people, but not always. This study focused on the modality representation contained in scam emails that make people uneasy and defined order pair of modality representation of 100 dimensions. Furthermore, we applied a dimensionality reduction algorithm to verify the accuracy of unsupervised learning of scam and normal em ails. © 2023 IEEE.

关键词： Electronic mail

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