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15th IEEE International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment, and Management, HNICEM 2023

作者： Bolaybolay, John Mel A. Aleluya, Earl Ryan M. Clar, Steve E. Pao, Jeanette C. Salaan, Carl John O. Alagon, Prancis Jann A. Villame, Cherry Mae G. Guirnaldo, Sherwin A. Department of Electrical Engineering Philippines Department of Computer Engineering and Mechatronics Philippines Graduate School of Engineering Philippines Mindanao State University - Iligan Institute of Technology Department of Mechanical Engineering and Technology Iligan City9200 Philippines

ISBN: (纸本)9798350381177

The development of collaborative aerial and ground robot technology offers a promising solution for volcano-exploring robotic systems. However, certain components are missing, particularly concerning the concept of ground robot retrieval. While the use of visual servo control is not new, it can be applied for aligning drones and rovers to facilitate ground robot retrieval. Traditional visual servo control methods often rely on fiducial markers, which may lack robustness in practical implementations. Within this paper, the authors propose an alternative visual servo control marker suitable for real-world scenarios. We present a comparative analysis of existing instance seg-mentation models from different YOLO versions, specifically, YOLOvS, YOLOv7, and YOLOv8, trained for drone detection. Additionally, we introduce a novel dataset, DroneCVS, comprising drone images captured from the ground robot's perspective under varying weather and altitude conditions. Our experimental findings demonstrate the instance segmentation model's capacity to acquire and learn drone segmentation from the DroneCVS dataset, achieving outstanding performance in different in evaluation metrics. In most evaluation scenarios, YOLOvS outperforms other models, leading to the conclusion that it provides the best balance between speed, weight, and performance in real-time applications. © 2023 IEEE.

关键词： Visual servoing

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Feasibility Study of Finger Interface for Miniature Surgical Instruments 1

Feasibility Study of Finger Interface for Miniature Surgical...

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1st IEEE Conference on Telepresence, Telepresence 2024

作者： Cha, Serin Kim, Sebin Ryu, Seok Chang Ewha Womans University Graduate Program in Smart Factory BioRobotics Laboratory Department of Mechanical and Biomedical Engineering Seoul03760 Korea Republic of Ewha Womans University BioRobotics Laboratory Department of Mechanical and Biomedical Engineering Korea Republic of

ISBN: (纸本)9798331528249

This paper presents a study on the design of a finger interface to improve the teleoperation of a miniaturized surgical instrument with a bendable distal section. A unique design principle employing the kinematic similarity between the human motion and the follower robot has been proposed for such instruments, which may result in embodied teleoperation, enhancing the overall telepresence experience. According to the principle, a design for an index finger interface was proposed, consisting of a sub-unit measuring finger motion and a handle. When the interface is connected to a robotic platform, it can control the entire tool motion in two separate ways: distal bending by the sub-unit and overall tool motion by the handle. A human subject test was conducted for trajectory-following tasks in a virtual environment, and their performance score was quantified for analysis of the learning curve. Based on the satisfactory learning rate of 75.78% for all nine subjects, the proposed finger interface could be a promising interface for a miniature surgical instrument with a long bendable section at the distal end. © 2024 IEEE.

关键词： Machine design

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Analysis of Temiki (Melastoma Candidum) Extract Compounds as Corrosion Inhibitors Using GC–MS 4th

Analysis of Temiki (Melastoma Candidum) Extract Compounds as...

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4th International Conference on Experimental and Computational Mechanics in engineering, ICECME 2022

作者： Supardi, Joli Rizal, Samsul Ali, Nurdin Fonna, Syarizal Ikramullah, Ikramullah Arifin, A.K. Doctoral Program School of Engineering Post Graduate Program Syiah Kuala University Banda Aceh23111 Indonesia Department of Mechanical Engineering Teuku Umar University Meulaboh23615 Indonesia Department of Mechanical and Industrial Engineering Syiah Kuala University Banda Aceh23111 Indonesia Department of Mechanical and Materials Engineering Universiti Kebangsaan Malaysia Selangor DE Bangi43600 Malaysia

ISBN: (纸本)9789819974948

Temiki (Melastoma Candidum) is one of the unutilized wild plants observed to be turning pests on plantations. It has only been used for medicine and not for engineering purposes. Therefore, this study aims to identify and analyze Temiki’s chemical compounds, which are useful as corrosion inhibitors. The plant was washed, dried, then blended until it became a fine powder, and was further extracted by employing the maceration method with ethanol as solvent. The extracted compounds were also analyzed using Gas Chromatography-Mass Spectrophotometry (GC–MS) and the results obtained include, 2-Furancarboxaldehyde (CAS) Furfural, 1,2,3-Propanetriol (CAS) Glycerol, Acetic acid,1-(2-methyltetrazole-5-yl) etheny, 4H-Pyran-4one,2,3-dihydro-3,5-dihydroxy, 5-Hydroxymethylfurfural, cis-dimethylmorpholine, 3-penten-1-ol,2,2,4-trimethyl-(CAS)2,2,4, 2-AMINO-9-(3,4-DIHYDROXY-5-HYDORO, D-Allose, beta-D-Glucopyranoside, methyl, Hexadecanoic acid, methyl ester, 9,12,15-Octadecatrienoic acid, methyl ester. In conclusion, these chemical compounds were useful as corrosion inhibitors. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Corrosion

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GeoRefineNet: A Multistage Framework for Enhanced Cephalometric Landmark Detection in CBCT Images Using 3D Geometric Information 17th

GeoRefineNet: A Multistage Framework for Enhanced Cephalome...

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17th Asian Conference on Computer Vision, ACCV 2024

作者： Viriyasaranon, Thanaporn Ma, Serie Choi, Jang-Hwan Department of Computational Medicine Graduate Program in System Health Science and Engineering Ewha Womans University Seoul Korea Republic of Division of Mechanical and Biomedical Engineering Graduate Program in System Health Science and Engineering Ewha Womans University Seoul Korea Republic of Department of Artificial Intelligence Ewha Womans University Seoul Korea Republic of

ISBN: (纸本)9789819609000

The precise detection of cephalometric landmarks on two-dimensional (2D) radiographs or three-dimensional (3D) computed tomography (CT) images is a fundamental step in various medical fields, especially in research on orthodontics and maxillofacial surgery. Deep learning-based detectors have demonstrated remarkable accuracy in 2D cephalometric analysis, whereas conventional single-view approaches are limited by their reliance on information from a single perspective. This study proposes GeoRefineNet, a novel multistage framework that leverages information from multiple CT scans acquired at various angles. By incorporating geometric knowledge through a 3D heatmap reconstruction process, GeoRefineNet improves robustness, accuracy, and adaptability to various cephalometric configurations. The proposed framework predicts 3D landmark positions on CT images, effectively addressing challenges associated with high-dimensional input data and limited training examples. GeoRefineNet surpasses the existing state-of-the-art models in the 2D and 3D domains, as demonstrated by its superior performance on numerical and clinical datasets. These findings indicate that GeoRefineNet offers a promising avenue for improving the accuracy and reliability of cephalometric landmark detection fostering further advances in clinical diagnosis and treatment planning. Our code is available at https://***/Thanaporn09/***. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Computerized tomography

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Numerical Study of Temperature Distribution and CO2 Forming of Gaseous Tangential Firing Furnace with O2 Level Variations in Air Combustion 5th

Numerical Study of Temperature Distribution and CO2 Forming ...

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5th International Conference on mechanical engineering, ICOME 2021

作者： Indrawan, Muhammad Deni Sudarmanta, Bambang Setiyawan, Atok Graduate Program of Mechanical Engineering Institut Teknologi Sepuluh Nopember Surabaya60111 Indonesia Department of Mechanical Engineering Institut Teknologi Sepuluh Nopember Surabaya60111 Indonesia

ISBN: (纸本)9789811908668

Oxyfuel combustion is considered to be one of the most effective methods to improve thermal efficiency for high temperature processes such as boiler water of steam power plant. In the oxyfuel combustion, the combustion characteristics such as temperature and CO2 emission are largely influenced by the process parameters such as the mixing between fuel gas and oxygen and the nitrogen content in the oxidant and fuel. A numerical simulation of 200 MW gaseous tangential firing boiler with varying O2 content 25%, 30%, 35% is presented. Simulations demonstrate the characteristics of temperature distribution and CO2 form rate in the furnace. The results show that by increasing O2 percentage in air combustion there is an increase in temperature level and CO2 forms rate by 6.8% and 13.92% in Oxy25, 16.9% and 15.02% in Oxy30, and 19.14% and 15.72% in Oxy35 compared to airfuel combustion. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Temperature distribution

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An Intelligent Controller for an Assisted Electric Wheelchair based on Interval Type-2 Fuzzy Logic

An Intelligent Controller for an Assisted Electric Wheelchai...

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2023 Advances in Science and engineering Technology International Conferences, ASET 2023

作者： Al-Bashayreh, Qutaiba A. H. Kiftaro, Ammar Alsheikh, Mahmoud Jaradat, Mohammad A. American University of Sharjah Mechatronics Engineering Gradute Program Sharjah United Arab Emirates American University of Sharjah Mechanical Engineering Department Sharjah United Arab Emirates

ISBN: (纸本)9781665454742

This paper proposes an intelligent controller design for an assisted electric wheelchair using interval type-2 fuzzy logic controller. The controller design has been structured using cascaded fuzzy inference system with feedback loop to avoid obstacles. In addition, to control the dynamics of the wheelchair, a speed fuzzy inference system has been added to the proposed controller. The controller is designed so that the user input is firstly obtained from the wheelchair joystick. The surrounding obstacles, thereafter, are detected using the input of three sensors attached to the wheelchair. At each time step, and until reaching the target point, the performed controller output generates both the motion angle and the wheelchair speed commands. The performance of the controller is tested by simulating the wheelchair travelling in different navigation scenarios. The simulation results confirm the effectiveness of the presented controller. © 2023 IEEE.

关键词： Wheelchairs

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Rectification and converter control of the FPSLGs for energy storage applications

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IET Renewable Power Generation 2024年第9-10期18卷 1611-1625页

作者： Ali, Murad Haitao, Yu Mobayen, Saleh Zhang, Jiahui Zhilenkov, Anton Din, Zakiud School of Electrical Engineering Southeast University Nanjing China Graduate School of Intelligent Data Science National Yunlin University of Science and Technology Yunlin Douliou Taiwan Department of Cyber-Physical Systems St. Petersburg State Marine Technical University Saint-Petersburg Russia Department of Mechatronics Engineering College of Electrical and Mechanical Engineering National University of Sciences and Technology Islamabad Pakistan

This article presents two power converters with controllers attached to the Free-Piston Stirling Linear Generator (FPSLG) and energy storage system (ESS). The rectifier uses hysteresis-SVPWM current regulation and CB-SPWM, while the buck-boost converter utilizes the dual-loop PI control method. The storage battery receives energy from a linear-generator with a rectifier and converter. The FPSE and linear motors in the FPSLG convert thermal to electrical energy. A two-level electrical energy conversion technique using a three-phase AC signal to DC and DC-DC converter has been devised to reduce output electrical energy oscillation as well as stabilize the generating system's DC power. Initially, the FPSE's nonlinear model and the three-phase permanent magnet linear-motor's linear mathematical model were created and followed by the ESS and control mechanism simulation. The simulation shows that the ESS system and control approach can give stable power to the storage battery using linear-generator power. The PR controller replaces the PI controller in the position loop to improve frequency and displacement tracing. The control system design was simulated in MATLAB and the topology's feasibility and correctness were confirmed. Comparative analysis shows that, rectifier uses the H-SVPWM's unity power factor of AC and stability controllability of the DC-side voltage is better than the CB-SPWM approach. © 2024 The Author(s). IET Renewable Power Generation published by John Wiley & Sons Ltd on behalf of The Institution of engineering and Technology.

关键词： Controllers

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Utilizing Mobile Robots to Teach Dengue and Chikungunya Prevention in Brazilian Schools

Utilizing Mobile Robots to Teach Dengue and Chikungunya Prev...

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2024 Brazilian Symposium on Robotics (SBR), and 2024 Workshop on Robotics in Education (WRE)

作者： R. B. Costa Pedro H. L. Gomes Luiz F. Rodriguez Silva M. A. Pastrana Maria C. C. Gontijo M. S. Luiz Daniel M. Muñoz Faculty of Gama Aerospace Engineering Undergraduate Program University of Brasilia Brasilia DF Brazil Faculty of Gama Electronics Engineering Undergraduate Program Department of Mechanical Engineering Mechatronics Graduate Program

ISBN: (数字)9798350391084

ISBN: (纸本)9798350391091

This paper introduces a novel approach to combating the spread of Dengue and Chikungunya, two prevalent arboviruses in tropical regions, especially in Brazil. The research presents a low-cost differential topology robot designed as an educational tool to raise awareness about mosquito breeding grounds among students and teachers in public schools across the Federal District, Brazil. Developed at the University of Brasilia, the robot is deployed in collaboration with the Federal District Health department to support prevention campaigns in schools. The paper evaluates the effectiveness of this innovative tool in enhancing community engagement and improving health outcomes. The findings suggest that integrating robotics into health education can significantly elevate awareness and strengthen prevention strategies against arboviral diseases.

关键词： Pediatrics Prevention and mitigation Education Collaboration Robot sensing systems Topology Public healthcare Robots Viruses (medical) Diseases

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Localization Strategy for Suspended Tethered-Drone 15

Localization Strategy for Suspended Tethered-Drone

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15th IEEE International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment, and Management, HNICEM 2023

作者： Omandam, Reza S. Pao, Jeanette C. Paradela, Immanuel P. Clar, Steve E. Alagon, Francis Jann A. Aleluya, Earl Ryan M. Salaan, Carl John O. Department of Electrical Engineering and Technology Philippines Department of Mechanical Engineering and Technology Philippines Department of Computer Engineering and Mechatronics Philippines Graduate School of Engineering College of Engineering and Technology Mindanao State University-Iligan Institute of Technology Iligan City Philippines

ISBN: (纸本)9798350381177

The emergence of tethered- drones has introduced a paradigm shift in infrastructure assessments. Providing a dynamic solution for the limited flight time and communication reliability of using a drone alone, incorporating a tether into the system yielded additional benefits for the visual assist in inspections. Furthermore, the use of a tether provides precise localization for the unmanned aerial vehicle in GPS-denied environments where vision-based exteroception is not available. In this study, a new localization strategy for a suspended tethered - drone was introduced. The approach leveraged three known parameters, the tether wire length, component of tension, and azimuth angle, to determine the 3D position of the tethered-drone. A hybrid set-up was used for a more accurate wire length measurement. Moreover, using a neural network, the trained data sets garnered 0.9936, 0.9920, and 0.9934 for training, validation, and overall regression scores, respectively. © 2023 IEEE.

关键词： Antennas

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Design and Performance Comparison of Low Dropout Regulators for a 32-bit Microcontroller Using 22nm Technology

Design and Performance Comparison of Low Dropout Regulators ...

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IEEE Latin American Symposium on Circuits and Systems (LASCAS)

作者： Emmanuel K. M. Johnson Luis Victor N. Lima Pamela. R. A. N. Campagnucci Sandro A. P. Haddad Wellington A. Amaral Daniel M. Muñoz Department of Mechanical Engineering Mechatronics Graduate Program University of Brasilia Brasilia DF Brazil Faculty of Gama Electronics Engineering Undergraduate Program University of Brasilia Brasilia DF Brazil

ISBN: (数字)9798331522124

ISBN: (纸本)9798331522131

This paper presents a comparison between two LDOs (Low Dropout Regulators) developed for a PMIC (Power Management Integrated Circuit) responsible for powering a 32-bit microcontroller based on the RISC-V microarchitecture, designed in 22 nm technology. The microcontroller will be integrated with a radio frequency interface for IoT (Internet of Things) applications. Two LDOs were designed: one with external compensation and the other a capacitor-less LDO. Both operate with an input voltage of 2.5V, an output voltage of 0.8V, and a maximum current of 150mA. The externally compensated LDO exhibited greater stability in response to load variations and a higher PSRR (Power Supply Rejection Ratio), while the capacitor-less LDO demonstrated faster regulation speed and occupied a chip area similar to the externally compensated LDO.

关键词： Regulators Microcontrollers Power supplies Power system management Simulation Stability analysis Regulation Circuit stability Internet of Things Voltage control

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