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IEEE International Symposium on Industrial Electronics (ISIE)

作者： Yoshihiro Maeda Makoto Iwasaki Department of Engineering Electrical and Mechanical Engineering Program Nagoya Institute of Technology Nagoya Japan

The data-driven autonomous feedforward (FF) control design technique known as frequency-domain modelling-free iterative learning control (MFILC) has gained attention for its ability to achieve fine motion control performance without excessive labor. However, the existing frequency-domain MFILC methods that rely on empirical transfer function estimation are not suitable for point-to-point (PTP) motion due to the leakage error that occurs in frequency response function (FRF) estimation. To address this issue, this study proposes an improved frequency-domain MFILC method that employs the differential filtering-based empirical transfer function estimation for FRF estimation. This enhancement enables the proposed method to learn the FF compensation in both reciprocating and PTP motion. Simulations were conducted to evaluate the effectiveness of the proposed method in achieving fast and precise motion control of a galvano scanner.

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Implementing a Praxis of Change: A Comparative Case Study on the Instruction of engineering Ethics and the Development of Trust 53

Implementing a Praxis of Change: A Comparative Case Study on...

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53rd IEEE ASEE Frontiers in Education International Conference, FIE 2023

作者： Gerardo, Hortense De Callafon, Raymond Boechler, Nicholas Anthropology Performance and Technology Program Uc San Diego La Jolla CA United States Mechanical and Aerospace Engineering Uc San Diego La Jolla CA United States

ISBN: (纸本)9798350336429

An experiential approach to improve learning outcomes in the area of ethics training for mechanical and aerospace engineering upper-class undergraduates has been previously described [1]. Due to the initial positive outcomes and feedback from students, an ethics module comprised of three interactive, experiential exercises introduced into a core-curriculum laboratory class was deployed the following academic year. In this iteration as part of the module, upper-class students from aerospace engineering as well as mechanical engineering were pre-divided into groups of four and asked to select from a curated selection of case studies relevant to their major. They were then asked to create a compelling, three-minute video in which the roles of client, manager, engineer, and any other role deemed relevant, embodied the complexity of making difficult ethical decisions in the selected case study. The assumption in the past had been that students simply needed to learn how to comprehend how stakeholders might perceive a problem from multiple perspectives, and in the communication of these views develop a deeper understanding that would enable them to make sound ethical decisions. While this may be a critical part in teaching ethical decision making, it is clear that another, perhaps more fundamental enabling aspect is in establishing a sense of trust that encouraged deeper reflection and sharing amongst the students which provides the foundation for the subsequent empathetic understanding and communication. Contrary to previous assumptions about the primacy of communication as foundational for the establishment of ethically sound decision-making, this paper discusses the importance of creating an environment of trust wherein leadership in equitable and ethical decision-making can be promoted. © 2023 IEEE.

关键词： communication ethics experiential learning interactivity trust

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Transport and magnetic properties of Hund's metal CaRuO3 under strain modulation

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Physical Review B 2024年第4期110卷 L041403-L041403页

作者： Zhen Wang Arjyama Bordoloi Zhaoqing Ding Enling Wang Xiaofeng Wu Zeguo Lin Mingyu Yang Chenxu Liu Jinglin Zhou Meng Meng Fang Yang Qinghua Zhang Xiaoran Liu Sobhit Singh Huan-hua Wang Jiandong Guo Beijing National Laboratory for Condensed Matter Physics and School of Nuclear Science and Technology Department of Mechanical Engineering School of Physical Sciences Materials Science Program

We synthesized CaRuO3 (001) thin films on a set of substrates and investigated their electronic and magnetic properties via combining magnetotransport measurements with first-principles density-functional theory calculations. The experimental results indicate that a moderate strain can introduce the Kondo effect in the system, leading to a significant modulation of the non-Fermi liquid behavior. Moreover, when the strain reaches a certain threshold, the system undergoes a metal-semiconductor transition, accompanied by a transition from a nonmagnetic state to a plausible G-type antiferromagnetic state. We attribute the observed phenomena in CaRuO3 to strain-induced disruption of the delicate balance between the itinerant and the local Ru 4d electrons. These findings shed light on the intriguing magnetic and non-Fermi liquid behavior of CaRuO3, systematically tailored by heteroepitaxial strain.

关键词： Density of states Kondo effect Transport phenomena Ruthenates Ultrathin films Density functional calculations Physical deposition Resistivity measurements Strain engineering X-ray diffraction X-ray reflectivity

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The Influence of Acetylene Black Microparticles as a Fuel Additive in Pure Palm Oil and its Performance Characteristic on Diesel Engine

SSRN

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SSRN 2024年

作者： Prahmana, Rico Aditia Darmanto, Prihadi Setyo Juangsa, Firman Bagja Reksowardojo, Iman Kartolaksono Hendrarsakti, Jooned Serunting, Muhamad Allan Yuwazama, Zido Ahmad, Azaria Haykal Prakoso, Tirto Doctoral Program of Mechanical Engineering Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Bandung40132 Indonesia Thermal Science and Engineering Research Group Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Bandung Indonesia Program of Mechanical Engineering Department of Production and Industrial Technology Institut Teknologi Sumatera South Lampung 3536 Indonesia Departement of Chemical Engineering Faculty of Industrial Technology Institut Teknologi Bandung Bandung40132 Indonesia Program of Mechanical Engineering Faculty of Industrial Technology Universitas Pertamina Jakarta12220 Indonesia Program of Chemistry Faculty of Science Institut Teknologi Sumatera Lampung Selatan Indonesia

Fuel additives are recognized for their potential to make diesel engines cleaner and more efficient. However, the use of Pure Palm Oil (PPaO) as a fuel faces challenges due to its inherent combustion inefficiencies. This study explores how Acetylene Black (AB), as an additive, affects the combustion performance and spray characteristics of a diesel engine. Observations of spray phenomena were conducted using a High-Speed Camera Phantom C110. The addition of AB to PPaO resulted in an increase in engine power and torque by 11.43% at a 60% load, averaging a 2.97% improvement over diesel fuel (DF). PPaO demonstrated the most significant improvement in Specific Fuel Consumption (SFC) by 17.2% at a 40% load, averaging an 8.2% increase. For PPaO with AB (PPaOAB), the greatest enhancement in SFC occurred at a 10% load, showing a 9.2% improvement over DF, with an average increase of 2.1%. The study also found that thermal efficiency was optimally enhanced with PPaOAB at a 20% load, achieving a remarkable 17.7% improvement compared to DF. Notably, the inclusion of AB in PPaO significantly improved spray angle and penetration compared to PPaO alone. These findings suggest that AB could be a promising additive for PPaO, sparking further research interest in the application of AB in other fuels. © 2024, The Authors. All rights reserved.

关键词： Palm oil

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Modeling of the Bending Behavior to Study Nested-Cylinder Structure in Spicules 152nd

Modeling of the Bending Behavior to Study Nested-Cylinder St...

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152nd Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2023

作者： Lowe, Olivia Peco, Christian Tavangarian, Fariborz Mechanical Engineering Program School of Science Engineering and Technology Pennsylvania State University Harrisburg MiddletownPA17057 United States Department of Engineering Science and Mechanics Pennsylvania State University University Park State CollegePA16802 United States

ISBN: (纸本)9783031225239

The spicule structure of the Euplectella aspergillum sponge (EA) looks promising in the search for mechanical enhancements of brittle materials. Researchers have explored how the various structural levels of the EA affect the properties of the material. Specifically, the nested-cylinder structure of the EA’s spicules increases the strength and toughness of the sponge. However, there is limited research on this structural level of the sea sponge. This research uses finite element analysis (FEA) to model the spicule structure in COMSOL, setting the stage for further research into this bio-inspired material. The results of the initial bending tests prove this procedure of analysis is useful in the study of the spicule structure. © 2023, The Minerals, Metals & Materials Society.

关键词： Bending tests

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Enhanced Dye Adsorption and Bacterial Removal of Magnetic Nanoparticle-Functionalized Bacterial Cellulose Acetate Membranes

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Journal of Renewable Materials 2024年第9期12卷 1605-1624页

作者： Heru Suryanto Daimon Syukri Fredy Kurniawan Uun Yanuhar Joseph Selvi Binoj Sahrul Efendi Fajar Nusantara Jibril Maulana Nico Rahman Caesar Komarudin Komarudin Centre of Advanced Material for Renewable Energy(CAMRY) Universitas Negeri MalangMalang65145Indonesia Department of Mechanical and Industrial Engineering Universitas Negeri MalangMalang65145Indonesia Department of Food and Agricultural Product Technology Faculty of Agricultural TechnologyAndalas UniversityPadang25163Indonesia Department of Chemistry Institut Teknologi Sepuluh NopemberSurabaya60111Indonesia Study Program of Aquatic Resources Management Faculty of Fisheries and Marine ScienceBrawijaya UniversityMalang65145Indonesia Institute of Mechanical Engineering Saveetha School of EngineeringSaveetha Institute of Medical and Technical Sciences(SIMATS)Saveetha UniversityChennai602105India Faculty of Vocational Universitas Negeri MalangMalang65145Indonesia

Utilizing biomass waste as a potential resource for cellulose production holds promise in mitigating environmental *** current study aims to utilize pineapple biowaste extract in producing bacterial cellulose acetate-based membranes with magnetic nanoparticles(Fe_(3)O_(4)nanoparticles)through the fermentation and esterification process and explore its *** bacterial cellulose fibrillation used a high-pressure homogenization procedure,and membranes were developed incorporating 0.25,0.50,0.75,and 1.0 wt.%of Fe3O4 nanoparticles as magnetic nanoparticle for *** membrane characteristics were measured in terms of Scanning Electron Microscope,X-ray diffraction,Fourier Transform Infrared,Vibrating Sample Magnetometer,antibacterial activity,bacterial adhesion and dye adsorption *** results indicated that the surface morphology of membrane changes where the bacterial cellulose acetate surface looks *** crystallinity index of membrane increased from 54.34%to 68.33%,and the functional groups analysis revealed that multiple peak shifts indicated alterations in membrane functional ***,adding Fe_(3)O_(4)-NPs into membrane exhibits paramagnetic behavior,increases tensile strength to 73%,enhances activity against *** and ***,and is successful in removing bacteria from wastewater of the river to 67.4%and increases adsorption for anionic dyes like Congo Red and Acid Orange.

关键词： Bacterial cellulose dye adsorption Fe_(3)O_(4)nanoparticles membrane pineapple waste

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Artificial Intelligence to Simulate engineering Properties of Soil

Artificial Intelligence to Simulate Engineering Properties o...

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Advances in Science and engineering technology International Conferences (ASET)

作者： Elgaali Elgaali Hiyam Alshammari Akram Joda Fatema Alnaqbi Hussain Rajab Civil Engineering Program Dubai Men's College Higher Colleges of Technology Dubai UAE Mechanical Engineering Program Dubai Men's College Higher Colleges of Technology Dubai UAE

ISBN: (数字)9798350344134

ISBN: (纸本)9798350344141

Soil's engineering properties are critical components in designing sub and super structures. Knowing the engineering properties helps engineers determine the appropriate type of foundation for a building. Determining engineering properties needs laborious work in the field and in the lab. Alternatively, artificial intelligence (AI) is used in this study to estimate the soil's engineering properties. This project involves design and development of an artificial intelligence-based tool (Neural Network) to simulate soil's engineering properties (output) from physical properties (input). Namely, the artificial neural network (ANN) is developed to estimate the soil's axial compressive strength (output) form the soil's moisture content (input). The ANN is trained, validated, and tested using real data measured in the field. The performance of the ANN is measured by two statistics the correlation coefficient (R) and the root-mean-square error (RMS). As measured by the R statistic, there is a clear linear correlation between the measured and simulated axial compressive strength (R > 0.86). Clearly, the RMSE performance of the ANN is good (small values) and the ANN appears to have a good ability to map a relationship between the input (soil's physical property) and the output (engineering property).

关键词： Correlation coefficient Correlation Soil measurements Soil moisture Measurement uncertainty Buildings Artificial neural networks Soil Artificial intelligence

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Wake analysis between nested design and cylindrical representation of a low current speed vertical tidal turbine 7

Wake analysis between nested design and cylindrical represen...

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7th International Conference on Applications and Design in mechanical engineering, ICADME 2021

作者： Dass, L. Rahman, A. Rajendran, K. Suhri, G.E. Mechanical Engineering Program Faculty of Mechanical Engineering Technology Universiti Malaysia Perlis Perlis Arau02600 Malaysia

Over the past years, electrical energy demand has increased dramatically worldwide. Malaysia being a developing country, the need for electrical energy is expected to rise yearly. Therefore, to prevent the energy crisis and global warming, the Malaysian Government has started to switch focus to renewable energy technologies. This paper will analyse the wake characteristics produced by the vertical axis tidal turbine design. Malaysian waters have shallow depth and low water current speed, contributing to an ideal solution to implement a nested turbine. The numerical analysis compares the wake generated from the actual turbine design and a hypothetical ‘actuator’ cylinder which represents vertical axis tidal turbine. The simulation result has been validated with other studies which brings about the understanding of the wake generated from nested turbine and ‘actuator’ cylinder. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Wakes

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The influence of tidal turbine arrangement on the wake interaction in shallow water 7

The influence of tidal turbine arrangement on the wake inter...

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7th International Conference on Applications and Design in mechanical engineering, ICADME 2021

作者： Suhri, G.E. Rahman, A. Dass, L. Rajendran, K. Mechanical Engineering Program Faculty of Mechanical Engineering Technology Universiti Malaysia Perlis Perlis Arau02600 Malaysia

The arrangement of tidal turbines in the tidal farm is known to be complicated due to the resistance to the tidal flow which causes the flow to be channeled around the individual devices. To successfully implement the tidal turbine, the wake interaction between the device and its implication needs to be fully understood. Typically, the wake interaction in the array depends on the arrangement and spacing between the device in the array. In this study, a numerical analysis is conducted through the use of Computational Fluid Dynamic (CFD) approach to investigate the influence of the array setup in shallow water application and to propose a suitable array layout for possible application in Malaysia. The numerical analysis is carried out with 2 combination sets of lateral and longitudinal spacing covering 15 turbines in staggered and squared array layout. Hypothetical ‘actuator’ disk and ‘actuator’ cylinder model are used to represent the Horizontal axis turbine (HATT) and Vertical axis turbine (VATT) respectively. The results showed that the VATT model has faster wake recovery and obeys the definition of the far wake. Staggered arrays with bigger spacing are preferable for application in shallow water due to the low probability of wake merging between the rows. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Numerical analysis

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Pose Control With an Input-to-state Safe Control Barrier Function for Rigid Body Motion

IEEJ Transactions on Electronics, Information and Systems

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IEEJ Transactions on Electronics, Information and Systems 2023年第1期143卷 67-75页

作者： Murao, Toshiyuki Matsumoto, Kosuke Kawai, Hiroyuki Ibuki, Tatsuya Fujita, Masayuki College of Engineering Kanazawa Institute of Technology 7-1 Ohgigaoka Nonoichi Ishikawa921-8501 Japan Graduate Program in Mechanical Engineering Kanazawa Institute of Technology 7-1 Ohgigaoka Nonoichi Ishikawa921-8501 Japan School of Science and Technology Meiji University 1-1-1 Higashimita Tama-ku Kawasaki Kanagawa214-8571 Japan Graduate School of Information Science and Technology The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-8656 Japan

In this paper, we present a pose control method for rigid body motion via an input-to-state safe control barrier function (ISSf-CBF). The control objective is that a mobile robot converges to the desired pose with avoiding any obstacles under input disturbances. First, we derive a control error system to discuss stability via the Lyapunov method. Through the kinematic model for a rigid body, we design an ISSf-CBF for obstacle avoidance under input disturbances. Next, we present a control Lyapunov function (CLF) for the control error system. By using the ISSf-CBF and the CLF, we discuss a unified quadratic program formulation that ensures both safety and stability for pose control of rigid body motion under input disturbances. Our proposed approach, which deals with both the position and the orientation of rigid body motion, connects the safety and the stability via the ISSf-CBF and the CLF. Finally, simulation and experimental results confirm the validity of the proposed ISSf-CBF control method compared to the stabilizing one. ©c 2023 The Institute of Electrical Engineers of Japan.

关键词： Lyapunov methods

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