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49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023

作者： Kanazawa, Reo Murao, Toshiyuki Kawai, Hiroyuki Kanazawa Institute of Technology Graduate Program in Mechanical Engineering Ishikawa Japan Kanazawa Institute of Technology Department of Robotics Ishikawa Japan

ISBN: (纸本)9798350331820

This paper presents a pose synchronization method for semi-autonomous dynamic robotic swarms with a passivityshort human operator. In the human-robot network, a human operator sends a command signal to and receives visual information from only a part of the robotic group. In this setting, the proposed dynamic control scheme achieves not only pose synchronization of all mobile robots but also convergence to the reference pose that the human operator specifies. The main advantage of the proposed method is to guarantee convergence of not only the position but also the orientation to the reference ones in the human-robot network. Finally, we provide human-in-the-loop simulation results through the human operation using a tablet PC to illustrate the performance of the proposed control method. © 2023 IEEE.

关键词： Synchronization

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Ultra-flexible graphene/nylon/PDMS coaxial fiber-shaped multifunctional sensor

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Nano Research 2023年第4期16卷 5541-5547页

作者： Peddathimula Puneetha Siva Pratap Reddy Mallem Sung Cheol Park Seoha Kim Dong Hun Heo Cheol Min Kim Jaesool Shim Sung Jin An Dong-Yeon Lee Kwi-Il Park Department of Robotics and Intelligent Machine Engineering/College of Mechanical and IT Engineering Yeungnam UniversityGyeongsan 38541Republic of Korea School of Materials Science and Engineering Kyungpook National UniversityDaegu 41566Republic of Korea Advanced Material Research Center Kumoh National Institute of TechnologyGumi 39177Republic of Korea School of Mechanical Engineering Yeungnam UniversityGyeongsan 38541Republic of Korea Department of Materials Science and Engineering Kumoh National Institute of TechnologyGumi 39177Republic of Korea

The development of flexible and wearable devices is mainly required for tactile sensing;as such devices can adapt to complicated nonuniform surfaces,they can be applied to the human ***,it remains necessary to simultaneously achieve small-scale,portable,and stable developments in such ***,this work aims at fabricating a novel,lightweight,ultra-flexible,and fiber-shaped coaxial structure with a diameter of 0.51 mm using polydimethylsiloxane/graphene/nylon material,based on piezoresistive and triboelectric *** piezoresistive-based robotic-hand-controlled sensor thus realized exhibits a response time of 120 ms and a fast recovery time of 55 ***,the piezoresistive-based sensors effectively feature whisker/joystick-guided behaviors and also sense the human finger *** to the triboelectric-based selfpowered nanogenerator behavior,the resulting sensor can convert mechanical motion into electrical energy,without adversely affecting human ***,this triboelectric-based human finger sensor can be operated under different bending modes at specific ***,this multifunctional sensor is cost-effective and suitable for various applications,including robotichand-controlled operations in medical surgery,whisker/joystick motions in lightweight drone technology,and navigation with highsensitivity components.

关键词： extremely lightweight ultra-flexible piezoresistive/triboelectric sensor human-machine whisker

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Iron Loss Calculation Method Considering Slot Harmonic Components for Induction Motor Using Virtual Blocked Rotor and Transfer Learning

Iron Loss Calculation Method Considering Slot Harmonic Compo...

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2024 IEEE Energy Conversion Congress and Exposition, ECCE 2024

作者： Lee, Ji-Hyeon Kim, Hyun-Su Park, Soo-Hwan Park, Jin-Cheol Lim, Myung-Seop Seoul Korea Republic of Dongguk University Department of Mechanical Robotics and Energy Engineering Seoul Korea Republic of

ISBN: (纸本)9798350376067

In recent times, there has been growing interest in electric motors, particularly induction motors (IMs), which do not require rare-earth materials. IMs efficiency is a critical parameter as it directly influences the overall efficiency of the system. The iron loss is a significant factor in assessing the overall efficiency of IMs. Therefore, it is crucial to make accurate predictions of iron loss during the design of IMs. Analyzing iron loss of IMs using transient analysis offers accuracy but demands high computational costs due to induced current in the rotor bars and the difference between the stator current frequency and slip frequency. Conversely, utilizing the virtual blocked rotor (VBR) for analysis reduces computational cost but decreases accuracy, because this method can match the stator current frequency and slip frequency. Thus, in this paper, we propose a method aimed at enhancing the accuracy of the VBR while retaining its advantage of lower computational cost compared to conventional transient analysis, utilizing both the VBR and transfer learning. The transfer learning is conducted using a large amount of iron loss excluding slot harmonic components derived from the VBR and a small amount of iron loss including slot harmonic components derived from transient analysis. This method enables accurate determination of iron loss including slot harmonic components with a limited dataset, thereby improving the efficiency of the IMs design process. © 2024 IEEE.

关键词： Stators

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Characteristics Evaluation of Three Balinese Bamboos as Precursor of Activated Carbon 1

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7th International Conference on Materials engineering and Nanotechnology, ICMEN 2023

作者： Negara, Dewa Ngakan Ketut Putra Nindhia, Tjokorda Gde Tirta Widiyarta, I. Made Dwijana, I. Gusti Komang Dinata, Dewa Gede Arisma Prasetiyo, Gopi Wardana, I. Dewsa Made Prayoga Hendra Wibawa, I. Wayan Ryan Arta Mechanical Engineering Department Udayana University Bali80361 Indonesia Mechanical Engineering Master Program Udayana University Denpasar80234 Indonesia

ISBN: (数字)9789819740802

ISBN: (纸本)9789819740796

Activated carbon is known as an amorphous compound that can be manufactured from carbon-containing raw materials. It has a high adsorption capacity and is widely used in a variety of fields due to its high surface area and nano-sized pore structure. The rising demand has prompted a search for low-cost, large-quantity raw materials to replace non-renewable raw materials such as coal and petroleum residues, both of which are becoming scarce. The purpose of this research is to assess three types of Balinese bamboo as raw materials for activated carbon: petung, santong, and tali bamboos. Samples were prepared by dehydrating them under the sun for 5 days, cutting them into small pieces (±1 × 1 × 1 cm), and then heating them in an electric furnace at 105 ℃ for 1 h. Samples were then observed their microstructure using an optical microscope. To determine the chemical composition, moisture, ash, volatile, and fixed carbon content of the raw materials, the sample was ground into powder and characterized using the Van Soest analysis, and termogravimetric analysis (TGA test). The results showed that tali bamboo has the highest potential to produce high-quality activated carbon due to its higher cellulose (37.97%) and lignin (32.27%) content than petung and santong bamboos;despite having the highest moisture content (11.23%), tali bamboo has a fairly high volatile (70.72%), the lowest ash content (1.41%), and the highest fixed carbon (16.64%). The microstructure shows that vascular bundles close to the epidermis are denser and smaller in size than those further away. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Activated carbon

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Optimal Hyperbolic Tangent Model for Outer Bypass MR Damper with Meandering Type Valve 5

Optimal Hyperbolic Tangent Model for Outer Bypass MR Damper ...

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5th IEEE International Conference on Technology, Informatics, Management, engineering and Environment, TIME-E 2024

作者： Lambang Gh, R. Lullus Imaduddin, Fitrian Santoso, Budi Ubaidillah Universitas Sebelas Maret Student of Mechanical Engineering Doctoral Program Faculty of Engineering Surakarta Indonesia Universitas Sebelas Maret Faculty of Engineering Staff of Mechanical Engineering Department Surakarta Indonesia

ISBN: (纸本)9798350364743

This research discusses the application of the hyperbolic tangent model for an outer bypass MR damper with a meandering valve, which was developed by one of the authors. The hyperbolic tangent model consists of six parameters. In this study, parameter reduction was carried out using local and global sensitivity analysis, and a parameter identification strategy based on Particle Swarm Optimization (PSO) was employed. The objective function is the relative error between the model's force and the force obtained from experiments with an outer bypass MR damper prototype featuring a meandering valve. The sensitivity analysis identifies an optimal hyperbolic tangent model with two sensitive parameters, while the remaining parameters are determined to be constant. The results show an improvement in accuracy, with the optimal hyperbolic tangent model reducing the error from 8.06 % to 7.1 %. This indicates that the optimal hyperbolic tangent model can be obtained by applying the sensitivity analysis method developed in this research. © 2024 IEEE.

关键词： Sensitivity analysis

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Study of Thermal Uniformity and Heat Displacement Characteristics in Multi-stage Drying Equipment 3rd

Study of Thermal Uniformity and Heat Displacement Characteri...

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3rd International Conference on Experimental and Computational Mechanics in engineering, ICECME 2021

作者： Fikri, Thaharul Syuhada, Ahmad Thaib, Razali of Mechanical Engineering Program Department of Mechanical and Industrial Engineering Faculty of Engineering Universitas Syiah Kuala Banda Aceh Indonesia

ISBN: (纸本)9789811936289

Traditional drying still lacks one of the lengths of the curing process that takes 2–4 days depending on the condition of the sun, unlike the modern way of using dryer equipment. Previous research had created a multistoried dryer, but there was still a considerable temperature difference between the shelves. The study aims to reexamine the distribution of temperatures that occur in high-rise dryer equipment. Prior research has designed dryer appliances with a leveling 9 levels of hot gas line and a sharp turning fins, 45-degree bend on the left and right sides of the instruments. Still, they do not achieve the same temperature consistency in the dryer room. Achieving the right temperature in each dryer requires reshaping the fins of a hot gas line. From the long changes to the hot gas line, an efficient fin variation, a size of 35 mm in the gas duct, followed by a 5 mm increase in the last fin at the first deposit of 60 mm, but at the other end of the hot gas line at 7, 8, 9, was shut, with the experiment producing an evenly matched temperature between 1–2 ºC. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Dryers (equipment)

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Oscillatory Hall effect from magnetoelectronic coupling in flexoelectronic silicon

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Physical Review B 2024年第8期109卷 L081113-L081113页

作者： Paul C. Lou Ravindra G. Bhardwaj Anand Katailiha W. P. Beyermann Sandeep Kumar Department of Mechanical Engineering University of California Riverside California 92521 USA Department of Physics and Astronomy University of California Riverside California 92521 USA Materials Science and Engineering Program University of California Riverside California 92521 USA

Magnetoelectronic coupling can be defined as cross-domain coupling between electronic and magnetic properties, where modulation in magnetic properties changes the electronic properties. In this Letter, explicit experimental evidence of magnetoelectronic coupling is presented, which is uncovered from the oscillatory Hall effect response in Hall measurement. The strain gradient in a MgO (1.8 nm)/p-Si (∼400 nm) freestanding sample leads to transfer of electrons (∼5×1018cm−3) from valence to conduction band due to flexoelectronic charge separation in the p-Si layer. The resulting flexoelectronic polarization gives rise to the temporal magnetic moment from dynamical multiferroicity. The external magnetic field changes the net temporal magnetic moment, which causes modulations in charge carrier concentration and oscillatory Hall effect. The period of oscillatory Hall response is 1.12 T, which is attributed to the magnitude of the temporal magnetic moment. The discovery of the oscillatory Hall effect adds another member to the family of Hall effects.

关键词： Hall effect Doped semiconductors Electronically polarized systems Flexoelectrics Multiferroics Hall bar

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Study of the Ability of Hanging Flower Plants to Absorb Solar Heat 3rd

Study of the Ability of Hanging Flower Plants to Absorb Sola...

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3rd International Conference on Experimental and Computational Mechanics in engineering, ICECME 2021

作者： Harmin, Amalia Syuhada, Ahmad Maulana, Muhammad Ilham of Mechanical Engineering Program Department of Mechanical and Industrial Engineering Faculty of Engineering Universitas Syiah Kuala Banda Aceh Indonesia

ISBN: (纸本)9789811936289

The lack of plants in multi-storey housing causes an increase in environmental temperature, causing global heat. Therefore, thermal comfort is not achieved for humans which will reduce the quality of life, to overcome this, air conditioning (AC) is used. However, due to the high ambient temperature causing an increase in the use of air conditioning which will cause electricity consumption to increase as well. One effort that can be done is to multiply hanging flower plants around multi-storey buildings. This solution is expected to reduce the environmental temperature around high-rise buildings. This study aims to determine the heat absorption by fifteen types of plants tested by the hanging method, so that it can be seen which plants are most suitable to be planted to reduce environmental temperatures. The plants tested were Devils Ivy (Epippremnum Aureum), Purple Heart (Tradescantia), Ant Bag (Discida Geri), Velvet (Gynura Aurantica), Purple Zabrina (Trandescantia Zabrina), Paperomia Hope, Spider Lily (Cholorophytum Comosum), Purple Spider Lily (Trandescantia Spathacea), Nerve Leaf, Anthurium, Pigeon Feet (Altheantera Ficoida), Creeping Charlie (P. Nummularifolia), Candle Flower (Begonia), Zebrakraut, and Episcia. From the results obtained indicate that hanging flower plants affect the decrease in environmental temperature. The most effective among the mentioned hanging flower plants on absorbing heat with the hanging method are Spider Lily (Chlorophytum Comosum). © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Air conditioning

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Assessment of the GHG performance of a gas plant through an interactive business intelligence dashboard

Assessment of the GHG performance of a gas plant through an ...

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International Conference on Innovation and Technological Advances for Sustainability, ITAS 2023

作者： Al-Mohannadi, A.A. Masoud, M.A. Al-Naemi, B.N. Kucukvar, M. Engineering Management Program Qatar University Doha Qatar Department of Mechanical and Industrial Engineering Qatar University Doha Qatar

ISBN: (纸本)9781032803722

This study investigated the greenhouse gas performance of an operating plant from a business intelligence perspective. 2017-2021 GHG data was collected from the plant, transformed, and loaded into Microsoft Power BI, which was used to build the data model. A dynamic visual dashboard was created for data analysis. The analysis was categorized into areas based on the requirements of the functional dashboard. These categories were GHG emissions per time period, top emitting process units, distribution of GHG emissions by pre-defined categories, and energy intensity. The dashboard showed stable emissions and energy intensity from 2018-2021. Dashboard analysis also demonstrated major emissions contributions from gas turbine generators and fired heaters, mainly from fuel I, highlighting key focus areas for future GHG reduction initiatives. GHG abatement strategies were proposed to provide direction for improvement. Although the dashboard was intended to aid strategic decision making, it can be adapted for greater insights and for operational and tactical decision making by using more data in the model and closer cooperation with data and process owners and operators. © 2025 The Author(s).

关键词： Greenhouse gas emissions

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Open Circuit Type Wind Tunnel Fabrication for Testing Wind Turbine Blade Aerodynamics 3rd

Open Circuit Type Wind Tunnel Fabrication for Testing Wind T...

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3rd International Conference on Experimental and Computational Mechanics in engineering, ICECME 2021

作者： Yazid, Amar Syuhada, Ahmad Thaib, Razali of Mechanical Engineering Program Department of Mechanical and Industrial Engineering Faculty of Engineering Universitas Syiah Kuala Banda Aceh Indonesia

ISBN: (纸本)9789811936289

Experimental studies of wind turbines require a long time and other obstacles such as weather. There is a need for an assessment system on the effect of the aerodynamic system used in wind turbine blades that is more practical and not affected by natural conditions. The purpose of this study is wind tunnel fabrication to facilitate studies of the characteristics of the turbine blade model that will be developed in the future. Wind tunnels are used with an open system type. The NACA 4412 horizontal axis wind turbine prototype with blade lengths of 70, 90, and 110 mm were tested for the number of blades 3, 4, and 5 at wind speeds between 3–8 m/s, the power generated by the rotor experienced a large change starting at wind speed. 6 m/s. By looking at the resulting blade rotation based on wind potential and speed, getting optimal results at a blade length of 110 mm with 5 blades. At a wind speed of 6 m/s, the rotation is 279.2 rpm, the rotor power is 0.39 W. The wind speed is 8 m/s with a rotation of 526.7 rpm, and the rotor power is 0.64 W. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Wind tunnels

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