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Nanoscale synthesis of nickel oxide@carboxy methyl cellulose@nitrogen doped carbon nanotubes supported metal organic frameworks ternary composite for use symmetric supercapacitor

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International Journal of Biological Macromolecules 2025年 318卷 144901页

作者： Ramesh, Sivalingam Rabani, Iqra Thangavelu, Indumathi Yadav, H.M. Selvaraj, Manickam Saritha, Appukuttan Seo, Young-Soo Kim, Joo-Hyung Kim, Heung Soo Department of Mechanical Robotics and Energy Engineering Dongguk University 30 Pil-dong Jung-gu Seoul04620 Korea Republic of University of Antwerp Groenenborgeriaan171 Antwerp2020 Belgium Karnataka Bangalore560029 India School of Nanoscience and Bio-Technology Shivaji University Kolhapur416004 India Department of Chemistry Faculty of Science King Khalid University Abha61413 Saudi Arabia King Khalid University AlQura'a P.O. Box 960 Abha Saudi Arabia Department of Chemistry Amrita Vishwa Vidyapeetham Amritapuri Kerala Kollam India Interface Lab Department of Nanotechnology and Advanced Materials Engineering Sejong University Seoul05006 Korea Republic of Department of Mechanical Engineering Inha University Inha-ro100 Namgu Incheon22212 Korea Republic of

Metal-organic frameworks (MOFs) are a novel class of porous materials that combine organic linkers and inorganic metal ions. Supercapacitors use a large specific surface area, adjustable architecture, and tunable porosity and pore diameters to improve the electrochemical performances with metal sulfides. The main goal of this study was to make a nickel oxide ternary composite using a hydrothermal method with urea as a catalyst for electrochemical uses. We characterized these fabricated composite materials using analytical and morphological characterization for their confirmation. These results show that the composite electrode had a great specific capacitance of 464 F/g at 0.5 A/g in a 1 M KOH electrolyte when set up with three electrodes. The symmetric two-electrode system showed 52.83 F/g at 0.5 A/g with an excellent energy density of 13.14 Whkg−1 and a power density of 616 Wkg−1 via 1 M KOH electrolyte. The fabricated ternary composite electrode demonstrated cyclic stability, with an excellent retention rate of 89 % after 7000 cycles. Therefore, the fabricated ternary composite electrode materials have enormous potential for electrochemical storage properties. © 2025 Elsevier B.V.

关键词： Urea electrodes

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An Efficient Scheme for Path Planning in Internet of Drones

An Efficient Scheme for Path Planning in Internet of Drones

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IEEE Global Communications Conference

作者： Aditya Goyal Nikhil Kumar Amit Dua Neeraj Kumar Joel J. P. C. Rodrigues Dushantha Nalin K. Jayakody Computer Science and Information Systems Department Birla Institute of Technology and Science Pilani Computer science and Engineering Department Thapar Institute of Engineering and Technology Punjab National Institute of Telecommunications (INATEL) Brazil Instituto de Telecomunicações Portugal Federal University of Piauí (UFPI) Brazil Faculty of Engineering Sri Lanka Technological Campus Sri Lanka School of Computer Science & Robotics National Research Tomsk Polytechnic University Russia

ISBN: (数字)9781728109626

ISBN: (纸本)9781728109633

The Internet of Drones (IoD) is a multi-layered, control architecture to regulate and coordinate the navigation of Unmanned Aerial Vehicles (UAV) in a shared public airspace. UAVs have the potential to be employed in public space for purposes like surveillance, monitoring, package delivery, emergency services, etc. For proper operation, an efficient path planning among IoD is required so that they can adaptively decide their path for data dissemination. Most of the existing solutions for this problem have made unreasonable assumptions and do not offer scalability. The scheme proposed in the paper provides a network architecture for the scalable solution of UAVs in an urban environment addressing issues of path planning, safety, privacy, and network connectivity. The scheme has been tested using exhaustive simulation and results prove that the proposed scheme is efficient in terms of reducing the overall cost and delivery time with the increasing weight of payload in the drones.

关键词： Drones Path planning Internet Navigation Atmospheric modeling Scalability Companies

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Finite element analysis of automotive arm brake pedal for rapid manufacturing

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IOP Conference Series: Materials science and Engineering 2020年第1期715卷

作者： MIM Sargini SH Masood Suresh Palanisamy Elammaran Jayamani Ajay Kapoor Faculty of Engineering Computing and Science Swinburne University of Technology (Sarawak) Malaysia Malaysia Automotive Robotics and IoT Institute Cyberjaya Malaysia Dept. of Mechanical and Product Design Engineering Swinburne University of Technology Hawthorn VIC Australia

Current automotive arm brake pedal uses conventional manufacturing method such as metal press and CO2 welding processes, which are known to be heavy, costly and demand higher quality control. This paper will discuss how finite element analysis can be applied to optimise the design of a brake pedal for Rapid Manufacturing application based on current additive manufacturing process to produce automotive brake pedals with reduced material weight. The performance of the new design is compared with the current design of arm brake pedal to realise the potential of rapid manufacturing to save time and cost in automotive parts.

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Heat distribution in the deep drawing device components working by high temperatures 10

Heat distribution in the deep drawing device components work...

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10th International Conference Machine and Industrial Design in Mechanical Engineering, KOD 2018

作者： Tropp, M. Brumerčík, F. Šteininger, J. Weis, P. Glowacz, A. Univerzity of Žilina Faculty of Mechanical Engineering Department of Design and Mechanical Elements Univerzitná 1 Žilina010 26 Slovakia AGHUniversity of Science and Technology Faculty of Electrical Engineering Automatics Computer Science and Biomedical Engineering Department of Automatic Control and Robotics Al. A. Mickiewicza 30 Kraków30-059 Poland

The subject of the article is a simulation of heat affected components of a device for deep drawing by extreme conditions in vacuum by high temperatures required for forming of crystallization containers made from thin molybdenum sheets. The simulation is focused on the distribution of heat in particular components in relation with their shape. There are presented the design of working components and the boundary conditions of transient thermal simulations with the results. © 2018 Institute of Physics Publishing. All rights reserved.

关键词： Deep drawing

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The study of arduino uno feasibility for DAQ purposes

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Diagnostyka 2019年第2期20卷 33–48页

作者： Barański, Robert Galewski, Marek A. Nitkiewicz, Szymon AGH University of Science and Technology Faculty of Mechanical Engineering and Robotics al. Mickiewicza 30 Kraków30-059 Poland Gdansk University of Technology Faculty of Mechanical Engineering str. G. Narutowicza 11/12 Gdansk80-233 Poland Warmia and Mazury University Faculty of Technical Sciences 11 Oczapowskiego St. Olsztyn10-710 Poland School of Medicine Collegium Medicum 30 Warszawska St. Olsztyn10-082 Poland

Using microcontroller systems becomes a routine in various measurement and control tasks. Their wide availability together with a huge potential of extending their functionality by additional modules allows developing advanced measuring and monitoring systems by non-specialists. However, using popular example codes often leads the user to pass over or not to be aware of the limitations of the system and drawing too far-reaching conclusions on the basis of incorrectly performed measurements This paper deals with the problem of choosing the right method for performing measurements using an acquisition system based on the budget Arduino UNO solution. The main assumption was to use the standard, widely available Arduino libraries. The work focuses on the scenario when data should be subject to time and frequency analysis in the later processing. The operating limits of the device were also determined depending on the data transmission method used. © 2019 Polish Society of Technical Diagnostics. All rights reserved.

关键词： Signal analysis

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Corretion to “Shift-Adaptive Estimation of Joint Angle Using Instrumented Brace With Two Stretch Sensors Based on Gaussian Mixture Models” [Oct 20 5881-5888]

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IEEE robotics and Automation Letters 2020年第4期5卷 6804-6804页

作者： Ryo Eguchi Brendan Michael Matthew Howard Masaki Takahashi School of Science for Open and Environmental Systems Graduate School of Science and Technology Keio University Yokohama Japan Centre for Robotics Research Department of Engineering King's College London London U.K. Department of System Design Engineering Faculty of Science and Technology Keio University Yokohama Japan

Presents corrections to the above named paper.

关键词： Medical robotics Wearable sensors Maximum likelihood estimation Regression analysis Gaussian mixture model

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Universal serial bus as a communication medium for prototype networked data acquisition and control systems - performance optimisation and evaluation

Universal serial bus as a communication medium for prototype...

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Federated Conference on Computer science and Information Systems

作者： Andrzej Tutaj Jacek Augustyn AGH University of Science and Technology Faculty of Electrical Engineering Automatics Computer Science and Biomedical Engineering Department of Automatics and Robotics

ISBN: (纸本)9781538623718

Universal serial bus can be considered a cost-effective and high-throughput communication medium for sensor networks and multinode control or data acquisition systems, especially for prototyping purposes. In a prototype system, a PC or Mac computer with a general-purpose operating system is often selected as a host or root node for the USB bus and it acts as a central data collector, supervisory user interface, and network traffic scheduler. However, achieved communication performance is often unsatisfactory since USB stack drivers incorporated in Windows, Linux, or macOS operating systems are not optimised for such specific purposes. The paper shows how an appropriately selected and implemented user application communication schedule, making use of operating system drivers pipelining and multitasking capabilities, can substantially improve USB network throughput and reduce communication latency.

关键词： Universal serial bus Sensor network Distributed and networked control and data acquisition systems Rapid prototyping Communication scheduling USB stack pipelining and multitasking

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Derivation of an Acoustic Two-Port Scattering Matrix for a Multimode Wave Applying the Single-Mode Generator

Derivation of an Acoustic Two-Port Scattering Matrix for a M...

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Joint Conference - Acoustics

作者： Anna Snakowska Karolina Kolber Łukasz Gorazd Jerzy Jurkiewicz Faculty of Mechanical Engineering and Robotics AGH University of Science and Technology Krakow Poland Faculty of Electrical Engineering Automatics Computer Science and Biomedical Engineering AGH University of Science and Technology Krakow Poland

The paper presents the procedure of experimental derivation of an acoustic two-port scattering matrix for a multimode wave propagating, for example, in a muffler of a complicated design, applying the single-mode generator. The self-designed single-mode generator is constructed in the form of a matrix of acoustic monopoles and is capable to generate a selected single mode. The scattering matrix formalism is a new approach to analyse the acoustical systems containing one or more duct-like elements (joints) connected by some undefined elements such as, for example, acoustic mufflers of different types and so the formalism is frequently applied to analyse the phenomena of noise reduction in such systems. Experimental derivation of the scattering matrix for a wave composed of N modes demands, in general, excitation of N different sound fields at each side of the two-port first. Finally the matrix composed of the modal pressures measurements obtained for each of the exited fields must be inversed to obtain the scattering matrix. Generating single N modes the matrix of the incoming pressure data is, theoretically, diagonal which makes derivation of the scattering matrix much easier. Generation of independent sound fields in the shape of single modes ensures the matrix to be well conditioned.

关键词： Ducts Scattering Acoustics Exhaust systems Junctions Generators Shape

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Estimation of Hand Motion Based on Forearm Deformation

Estimation of Hand Motion Based on Forearm Deformation

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IEEE International Conference on robotics and Biomimetics

作者： Sung-Gwi Cho Masahiro Yoshikawa Ming Ding Jun Takamatsu Tsukasa Ogasawara Division of Information Science Nara Institute of Science and Technology (NAIST) Japan Faculty of Robotics & Design Engineering Osaka Institute of Technology (OIT) Japan

ISBN: (纸本)9781728103785;9781728103778

In various applications, studies of hand motion estimation play an important role. In these studies, the methods based on biosignals have gained in popularity because biosignals can be measured using only wearable devices. Among the various biosignals, we focus on forearm deformation. The forearm deformation provides the motion information about the surface and deep layer muscles, tendons, and bones. The previous studies based on the forearm deformation only attempted to recognize types of hand motions/shapes or to estimate a single joint angle. In this study, we propose a hand motion estimation method for multiple joint angles based on the forearm deformation measured with a distance sensor array. A Support Vector Regression is used for the joint angles regression. The distance sensor array has 10 distance sensor units and a mechanism that can be adjusted to the size of the user's forearm. The results of the hand motion estimation experiments show that the proposed method correctly estimated the joint angles with an RMSE of 6.6 degrees.

关键词： Strain Motion estimation Robot sensing systems Sensor arrays Motion measurement Muscles

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Quadrotor Manipulation System: Development of a Robust Contact Force Estimation and Impedance Control Scheme Based on DOb and FTRLS

arXiv

引用

arXiv 2019年

作者： Khalifa, Ahmed Fanni, Mohamed Khalifa, Alaa Cardiff School of technologies Cardiff Metropolitan University Cardiff United Kingdom Department of Industrial Electronics and Control Engineering Faculty of Electronic Engineering Menoufia University Al Menoufia Egypt Department of Mechatronics and Robotics Engineering Egypt-Japan University of Science and Technology Alexandria Egypt

The research on aerial manipulation systems has been increased rapidly in recent years. These systems are very attractive for a wide range of applications due to their unique features. However, dynamics, control and manipulation tasks of such systems are quite challenging because they are naturally unstable, have very fast dynamics, have strong nonlinearities, are very susceptible to parameters variations due to carrying a payload besides the external disturbances, and have complex inverse kinematics. In addition, the manipulation tasks require estimating (applying) a certain force of (at) the end-effector as well as the accurate positioning of it. Thus, in this article, a robust force estimation and impedance control scheme is proposed to address these issues. The robustness is achieved based on the Disturbance Observer (DOb) technique. Then, a tracking and performance low computational linear controller is used. For teleoperation purpose, the contact force needs to be identified. However, the current developed techniques for force estimation have limitations because they are based on ignoring some dynamics and/or requiring of an indicator of the environment contact. Unlike these techniques, we propose a technique based on linearization capabilities of DOb and a Fast Tracking Recursive Least Squares (FTRLS) algorithm. The complex inverse kinematics problem of such a system is solved by a Jacobin based algorithm. The stability analysis of the proposed scheme is presented. The algorithm is tested to achieve tracking of task space reference trajectories besides the impedance control. The efficiency of the proposed technique is enlightened via numerical simulation. Copyright © 2019, The Authors. All rights reserved.

关键词： Inverse kinematics

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