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Proposal of Serious Games for a Socially Assistive Robot Based on Eye Contact and Visual Attention of Children with Autism Spectrum Disorder 9th

Proposal of Serious Games for a Socially Assistive Robot ...

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9th Latin American Congress on Biomedical engineering, CLAIB 2022 and 28th Brazilian Congress on Biomedical engineering, CBEB 2022

作者： Negri, Yuri Panceri, João Freitas, Éberte Schreider, Sheila Caldeira, Eliete Bastos-Filho, Teodiano Electrical Engineering Department Federal University of Espirito Santo Av. Fernando Ferrari 514—Goiabeiras ES Vitória29075-910 Brazil Postgraduate Program in Electrical Engineering Federal University of Espirito Santo Vitoria Brazil Automation and Control Engineering Department Federal Institute of Espirito Santo Linhares Brazil Postgraduate Program in Biotechnology Federal University of Espirito Santo Vitoria Brazil

ISBN: (纸本)9783031494062

Eye contact is one of the main human skills, and a prerequisite of verbal language. However, children with Autism Spectrum Disorder (ASD) often have an important deficit in this skill, compromising their entire cognitive and social development. This work shows the development of two Serious Games (SGs), based on the concept of Child-Robot Interaction (CRI), for the exercise and improvement of eye contact and visual attention, as well as concepts such as imitation and emotion recognition. For face detection and eye movement monitoring, an open source development framework of machine learning named MediaPipe was used. Tests with children with ASD will be conducted, and it is expected these SGs have a positive impact regarding the improvement of both eye contact and visual attention for these children. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Serious games

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MULTIDISCIPLINARY MODELING AND ANALYSIS OF NOSE LANDING GEAR SHIMMY

MULTIDISCIPLINARY MODELING AND ANALYSIS OF NOSE LANDING GEAR...

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2024 CSAA/IET International Conference on Aircraft Utility Systems, AUS 2024

作者： Chen, Xiying Pan, Zhe Zhao, Shutong Gao, Bo Wang, Zeng Beijing Institute of Precision Electromechanical Control Beijing China School of Automation Science and Electrical Engineering Beihang University Beijing China Innovation Center for Control Actuators Beijing China

The research content is the shimmy analysis of the nose landing gear, mainly considering the stiffness of the main structural parts of the nose landing gear, the structure and damping parameters of shimmy damper, establishing a multi-body dynamics co-simulation model of the shimmy based on one-dimensional and three-dimensional co-simulation, and analyzing the anti-shimmy effect of the nose landing gear under different interference forces during landing and taxiing. To verify the rationality of the nose landing gear structure and parameter design, the critical shimmy damping hole diameter curve is calculated. It can be seen that the shimmy stability margin requirements are met with the gradual increase of aircraft taxiing speed. The diameter of the critical damping hole is slightly reduced at first, and the gradually increased. According to the analysis results, the damping parameters that meet the actual demand of shimmy reduction are given, which provides necessary technical support for the design of shimmy reduction system. © The Institution of engineering & Technology 2024.

关键词： Damping

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Research on a Permanent Magnet Trip Device for DC Miniature Circuit Breakers 7

Research on a Permanent Magnet Trip Device for DC Miniature ...

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7th International Conference on Electric Power Equipment - Switching Technology, ICEPE-ST 2024

作者： You, Yimin Pan, Yiwei Dai, Dongyun Wang, Lizhi School of Electrical Engineering and Automation Xiamen University of Technology Xiamen Key Laboratory of Frontier Electric Power Equipment and Intelligent Control Xiamen China

ISBN: (纸本)9798350388947

The article investigates the structure of a permanent magnet tripping device used in non-polarized DC miniature circuit breakers, proposing a permanent magnet arrangement relative to the moving iron core as an alternative to the traditional built-in spring design. Dynamic and static characteristics of this permanent magnet tripping device were calculated using simulation software and compared with those of a traditional tripping device. The results indicate that when a short-circuit current occurs, the permanent magnet tripping device can execute tripping actions more accurately and rapidly compared to the traditional design, ensuring efficient and stable operation of the miniature circuit breaker. Subsequent transient tripping experiments conducted on circuit breakers equipped with both types of tripping devices validated the accuracy of these findings. © 2024 IEEE.

关键词： Permanent magnets

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Structural Optimization of Shielding Cover For 24kV and 72.5kV Vacuum Interrupters 7

Structural Optimization of Shielding Cover For 24kV and 72.5...

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7th International Conference on Electric Power Equipment - Switching Technology, ICEPE-ST 2024

作者： Sang, Zhongqing Zhang, Yan You, Yimin Dai, Dongyun Tu, Yuanting Wang, Xu School of Electrical Engineering and Automation Xiamen University of Technology Xiamen Key Laboratory of Frontier Electric Power Equipment and Intelligent Control Xiamen China

ISBN: (纸本)9798350388947

Vacuum interrupters are widely used in power transmission and distribution systems, vacuum interrupters factory test inspection, some products will appear insulation breakdown phenomenon, resulting in a decline in the overall yield rate. Therefore, this paper is aimed at improving the insulation performance of vacuum interrupter this problem to carry out in-depth research. This paper adopts the finite element analysis method to carry out electric field simulation calculations, through the establishment of a 3D model of the 24kV spiral groove contact vacuum interrupter chamber, insulation optimization of the internal structure of the vacuum interrupter chamber, it can be obtained that the vacuum interrupter chamber overall electric field strength with the reduction of the length of the main shielding cover, overall electric field strength decreases with decreasing angle of the main shield edge flap;72.5kV cup-shaped contact vacuum interrupter using finite element analysis method, change the length of the bellows shield cover for electric field strength simulation calculation. According to the simulation results, the electric field strength at the crest gradually decreases with increasing length of the bellows shield. It is concluded that the length of the main shielding cover of the vacuum interrupter, the angle of turning out of the edge of the main shielding cover, and the length of the bellows shield cover have an important influence on the insulation performance of the vacuum interrupter. © 2024 IEEE.

关键词： Bellows

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Multi-objective Optimal Operation of Centralized Battery Swap Charging System with Photovoltaic

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Journal of Modern Power Systems and Clean Energy 2022年第1期10卷 149-162页

作者： Yuanzheng Li Yihan Cai Tianyang Zhao Yun Liu Jian Wang Lei Wu Yong Zhao School of Artificial Intelligence and Automation Ministry of Education Key Laboratory of Image Processing and Intelligence ControlHuazhong University of Science and TechnologyWuhanChina School of Electrical and Electronic Engineering Nanyang Technological UniversitySingaporeSingapore College of Mechatronics and Control Engineering Shenzhen UniversityShenzhenChina Department of Electrical&Computer Engineering Stevens Institute of TechnologyHobokenUSA

Electric vehicles(EVs)are widely deployed throughout the world,and photovoltaic(PV)charging stations have emerged for satisfying the charging demands of EV *** paper proposes a multi-objective optimal operation method for the centralized battery swap charging system(CBSCS),in order to enhance the economic efficiency while reducing its adverse effects on power *** proposed method involves a multi-objective optimization scheduling model,which minimizes the total operation cost and smoothes load fluctuations,***,we modify a recently proposed multi-objective optimization algorithm of non-sorting genetic algorithm III(NSGA-III)for solving this scheduling ***,simulation studies verify the effectiveness of the proposed multi-objective operation method.

关键词： Multi-objective optimization electric vehicle battery swap charging system scheduling photovoltaic

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Vulnerability of EV Charging Stations to Cyber Attacks Manipulating Prices

Vulnerability of EV Charging Stations to Cyber Attacks Manip...

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2023 International Conference on Future Energy Solutions, FES 2023

作者： Akbarian, Amirhossein Bahrami, Mahdi Vakilian, Mehdi Lehtonen, Matti Sharif University of Technology Center of Excellence in Power System Management and Control Electrical Engineering Department Tehran Iran Aalto University Department of Electrical Engineering and Automation Espoo Finland

ISBN: (纸本)9798350332308

Electric vehicles (EVs) have experienced an unprecedented increase in their penetration;in well developed countries;due to the advancement of battery technology and the need to make transportation more environmentally friendly. As a result of this trend, EVs have become an integral part of those countries power grid ecosystem, where they may be used as both a source, and a consumer of energy. However, cybersecurity risks associated with large fleets of EVs within the power grids can significantly impact the normal operation of distribution systems. This paper considers the cyber-attack consequences, from attackers' perspective. The cyber attackers under study target the charging price (CP) by increasing the CP in off-peak hours and accordingly subsiding it in on-peak hours. A two-stage optimization framework is proposed to identify the most important ultra-fast charging stations (XFCs) under the cyber-attack, meanwhile, the EV users' response to the compromised CP is considered. Then, the proposed model is implemented on a modified IEEE 123-bus distribution test system, and the effectiveness of the model is proved through some case studies. In particular, they demonstrated that the amount of load shedding is increased by 8.198 MW when the EV user response is taken into account. © 2023 IEEE.

关键词： Crime

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Research on Lightweighting of Secondary Cables Over Door in Instrumentation Room of Segmented Isolation Cabinet 7

Research on Lightweighting of Secondary Cables Over Door in ...

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7th International Conference on Electric Power Equipment - Switching Technology, ICEPE-ST 2024

作者： Zhao, Jing Wang, Xu Dai, Dongyun You, Yimin Cai, Ning Tu, Di School of Electrical Engineering and Automation Xiamen University of Technology Xiamen Key Laboratory of Frontier Electric Power Equipment and Intelligent Control Xiamen China

ISBN: (纸本)9798350388947

In order to solve the problems such as cable not easy to bundle and difficulty to open and close the instrument room door caused by too much secondary cables passing through the instrument room of intelligent miniaturized switchgear cabinet, this paper takes the secondary wiring diagram of intelligent miniaturized longitudinal rotary/shift-open sectional isolation cabinet installed in 220kV substation of a certain place as an entry point, analyzes the signal categories, connection methods, signal flow direction among different types of intelligent electronic device (IED), sensors and other components with the terminal internal wiring mode of the instrumentation room. Under the condition of keeping the function of the wiring diagram unchanged and conforming to the wiring regulations, the optimized design of the secondary cable of the instrumentation room door line of the switchgear cabinet is completed by adjusting the space arrangement of the IED and terminals, optimizing the redundant junction, and integrating the design of parts and components by other technical means. After optimization, the total number of secondary cables in the instrument room of the sectional isolation cabinet is reduced from 181 to 97, and the overall optimization rate reaches 46%. This research result can provide reference for intelligent miniaturized switchgear cabinet secondary cable lightweight design. © 2024 IEEE.

关键词： Electric switchgear

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Research and Application of Partial Discharge Identification Method of Switchgear Based on Joint Feature Collocation GBDT 7

Research and Application of Partial Discharge Identification...

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7th International Conference on Electric Power Equipment - Switching Technology, ICEPE-ST 2024

作者： Dai, Dongyun Lin, Yuji You, Yimin Sang, Zhongqing Liao, Quanchang Tu, Yuanting School of Electrical Engineering and Automation Xiamen University of Technology Xiamen Key Laboratory of Frontier Electric Power Equipment and Intelligent Control Xiamen China

ISBN: (纸本)9798350388947

The audio signal in the running process of the switchgear contains a lot of operating state information, which is of great significance to the monitoring of the internal insulation fault and abnormal state. In order to accurately identify partial discharge signals and non-partial discharge signals from audio signals collected in the complex environment of switching station, a method of feature extraction and recognition of partial discharge signals based on joint feature and gradient lifting decision tree (GBDT) is proposed. Firstly, the information distribution of partial discharge signal and non-partial discharge signal in time domain, frequency domain and time-frequency domain is analyzed, and corresponding features are extracted to form joint features. Then, GBDT is used to train the model and complete the recognition. Finally, the recognition method is verified, and various combinations are compared with common features and support vector machine (SVM). The recognition accuracy of combined features with GBDT reaches 100%. Based on this method, an online monitoring system is designed, and the audio recording and partial discharge identification results are displayed in the WeChat mini program. The research method and the system designed in this paper can be used for the online analysis and detection of the audio signal of the switchgear, which has certain engineering application value. © 2024 IEEE.

关键词： Audio recordings

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Texture Analysis of Breast US Images Using Morphological Transforms, Hausdorff Dimension and Bagging Ensemble Method 32

Texture Analysis of Breast US Images Using Morphological Tra...

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32nd Mediterranean Conference on control and automation, MED 2024

作者： Tabacaru, Gigi Moldovanu, Simona Barbu, Marian 'Dunarea de Jos' University of Galati Faculty of Automation Computers Electrical Engineering and Electronics Department of Automatic Control and Electrical Engineering Romania 'Dunarea de Jos' University of Galati Computer Science and Information Technology Faculty of Automation Computers Electrical Engineering and Electronics Romania Dunarea de Jos University of Galati The Modelling & Simulation Laboratory Galati800008 Romania

ISBN: (纸本)9798350395440

In this work, an attempt is made for the first time to use the measurement pattern generated by morphological transformation quantified by Hausdorff fractal dimension (HFD) and classified with ensemble learning based on bagging. The proposed work uses three morphological transformations for image preprocessing: hit-and-miss transform (HMT), white (WHT), and black top-hat (BHT). The pattern texture of US breast images is described by extracting the HFD from the regions of interest (ROI) after the ultrasound (US) images have been preprocessed. The main objective of this study was achieved by comparatively analyzing the classification performance of features using the Random Forest (RF), Extra Trees (ET) classifier, and bagging ensemble method based on XGBoot classifier. In presented study, the XGBoost classifier and BHT image processing method give an accuracy of 89.8% in a binary classification, benign versus malignant breast cancer. © 2024 IEEE.

关键词： Fractal dimension

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Proximity Estimation with Position Adjustment for Autonomous Industrial Inspection

Proximity Estimation with Position Adjustment for Autonomous...

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2024 International Conference on Artificial Intelligence of Things and Systems, AIoTSys 2024

作者： Zhou, Ziyi Huang, Ping Zheng, Song Xu, Zhezhuang Zhuang, Zixiong College of Electrical Engineering and Automation Fuzhou Univ. and Key Lab. of Industrial Automation Control Technology and Information Processing Education Department of Fujian Province Fuzhou350000 China

ISBN: (纸本)9798331507886

Due to the similarity in appearance and dense deployment of devices in industrial environments, relying solely on machine vision makes it challenging for inspection robots to accurately identify similar devices. Although wireless signals from industrial internet of things (IoT) can serve as identification features, signal fluctuations impact the accuracy and efficiency of recognition. To address this issue, this paper proposes a proximity estimation algorithm with position adjustment for autonomous industrial inspection. The algorithm considers the spatial relationships between nodes and the topological relationship between the signal strength and variations among the nodes. By analyzing the topological relationship between the signal strength and variations among the nodes, the robot autonomously adjusts its position and selects the proximal node based on the spatial topology relationship between them. We have built an inspection platform using quadruped robots to evaluate the effectiveness of the experiments. The experimental results demonstrate that the algorithm further improves the efficiency of identifying proximal devices while ensuring the estimation accuracy of the algorithm. © 2024 IEEE.

关键词： Topology

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