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Design and Simulation of a Micromachined Antenna for 60 GHz Millimeter-Wave Applications with Wet Etching Process using Inset-Fed Technique and Substrate Removal Enhancement 5

Design and Simulation of a Micromachined Antenna for 60 GHz ...

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5th International Conference on Electronics and Sustainable Communication Systems, ICESC 2024

作者： Anitha, G. Badrinathan, B. Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Saveetha University Department of Electronics and Communication Engineering Tamilnadu Chennai India Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Saveetha University Department of Automation and Robotics Engineering Tamilnadu Chennai India

ISBN: (数字)9798350379945

ISBN: (纸本)9798350379945

This study investigates the simulation and modeling of a microfabricated antenna designed to operate within the millimeter-wave spectrum at a frequency of 60 GHz. The antenna configuration proposed in this work is simulated on a gallium arsenide substrate with a dielectric constant 12.9. A unique aspect of this design is incorporating an angled side wall with a 54-degree inclination from vertical., which is achieved through a simulated wet etching process. The compact antenna dimensions of 2.1 mm x 2 mm make it suitable for integration into miniaturized devices. The simulations were performed utilizing the High Frequency Structure Simulator (HFSS) software, which is a computational electromagnetics tool for analyzing and designing complex RF and high-speed components. The antenna design employs an inset-fed technique to facilitate impedance matching and efficient power transfer. Additionally, a substrate removal technique was simulated to enhance the maximum gain. The simulation results demonstrate excellent performance, with the antenna attaining a maximum gain of 6.24 dBi, an exceptional return loss of -74.55 dB, and a voltage standing wave ratio (VSWR) of 1, indicating near-perfect impedance matching. These simulated results highlight the potential of this micromachined antenna design for a range of applications within the millimeter-wave frequency band, such as high-speed wireless communications, radar systems, and imaging devices, subject to successful fabrication and real-world testing. © 2024 IEEE.

关键词： Gallium arsenide

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Reachability-Based Confidence-Aware Probabilistic Collision Detection in Highway Driving

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engineering 2024年第2期33卷 90-107页

作者： Xinwei Wang Zirui Li Javier Alonso-Mora Meng Wang School of Engineering and Materials Science Queen Mary University of LondonLondon E14NSUK Department of Cognitive Robotics Delft University of TechnologyDelft 2628 CDNetherlands School of Mechanical Engineering Beijing Institute of TechnologyBeijing 100081China Chair of Traffic Process Automation “Friedrich List”Faculty of Transport and Traffic SciencesTU DresdenDresden 01069Germany

Risk assessment is a crucial component of collision warning and avoidance systems for intelligent ***-based formal approaches have been developed to ensure driving safety to accurately detect potential vehicle ***,they suffer from over-conservatism,potentially resulting in false–positive risk events in complicated real-world *** this paper,we combine two reachability analysis techniques,a backward reachable set(BRS)and a stochastic forward reachable set(FRS),and propose an integrated probabilistic collision–detection framework for highway *** this framework,we can first use a BRS to formally check whether a two-vehicle interaction is safe;otherwise,a prediction-based stochastic FRS is employed to estimate the collision probability at each future time ***,the framework can not only identify non-risky events with guaranteed safety but also provide accurate collision risk estimation in safety-critical *** construct the stochastic FRS,we develop a neural network-based acceleration model for surrounding vehicles and further incorporate a confidence-aware dynamic belief to improve the prediction *** experiments were conducted to validate the performance of the acceleration prediction model based on naturalistic highway driving *** efficiency and effectiveness of the framework with infused confidence beliefs were tested in both naturalistic and simulated highway *** proposed risk assessment framework is promising for real-world applications.

关键词： Probabilistic collision detection Confidence awareness Probabilistic acceleration prediction Reachability analysis Risk assessment

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Modeling and control scheme of the absorption machine of a solar cooling plant. ⁎

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IFAC-PapersOnLine 2024年第7期58卷 478-483页

作者： M.G. Satué M. Castilla F.R. Rubio M.G. Ortega Systems Engineering and Automation Department University of Seville 41092 Seville Spain Department of Computer Engineering Automation and Robotics CIESOL—ceiA3 University of Almería 04120 Almería Spain

The article presents the modeling of an absorption machine and a low level control system necessary to ultimately control the cooling power demanded by air conditioning systems. The modeling of the components has been implemented in Simulink in order to obtain a simulator of an absorption-machine-based cooling plant for controller design purposes. In the simulator, the proposed refrigeration system presents control loops to maintain the output variables of the flow rates and temperatures in established references. Finally, the results of the simulation are presented, which show the behavior of the absorption machine system and support the good performance of the proposed low level control system.

关键词： solar cooling absorption machine

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Optimum Design of Cumene Reactor Using COMSOL Multiphysics Modelling

Optimum Design of Cumene Reactor Using COMSOL Multiphysics M...

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International Conference on Advanced engineering Optimization Through Intelligent Techniques, AEOTIT 2022

作者： Lakshmanan, Vinila Mundakkal Kallingal, Aparna Sreekumar, Sreepriya Department of Chemical Engineering National Institute of Technology Calicut Kerala Kozhikode673601 India Department of Robotics and Automation Adi Shankara Institute of Engineering and Technology Kerala Kalady Ernakulum683574 India

ISBN: (纸本)9789811992841

COMSOL Multiphysics design of cumene reactor is done for the energy efficient modelling. Cumene manufacturing is an intermediate process during the production of phenol and acetone. The model incorporates the reaction kinetics, and the parameters are derived from the research plant. The system is designed as a packed bed reactor with four packed beds with defined boundary conditions. TDS interface of COMSOL is used to add the transport qualities, and the transport mechanism is convection. The system's performance is evaluated in order to improve efficiency and throughput. The concentration distribution in the fluid along the length of the reactor is one of the investigation's findings. The reactor implemented is analysed for variations in different parameters of the system. The particle porosity and catalytic particle size have been analysed. The analysis suggests that for a variation in the catalytic particle size from that of the plant value, the reactor temperature can be reduced to a minimal optimum level. Hence, this paper proposes an energy efficient model for the cumene reactor under study. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Particle size

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Experimental and Numerical Studies on the Forming Behavior of Interstitial-Free Steel Sheet

Experimental and Numerical Studies on the Forming Behavior o...

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International Conference on Mechanical engineering, INCOME 2023

作者： Saxena, Srashti Gautam, Vijay Bautola, Ravi Delhi Technological University Delhi110042 India Department of Mechanical Engineering Delhi Technological University Delhi110042 India University School of Automation & Robotics GGSIP University Delhi India

ISBN: (纸本)9789819738731

It is a comprehensive study of forming behavior of interstitial-free steel sheet following the Erichsen cupping test in order to find out the ductility of the metal sheet. The Erichsen cupping test measures forming behavior by subjecting the metal sheet to a gradually increasing force until it deforms and forms a cup-shaped depression. Three sheets of 0.7, 1.2, and 1.5 mm thickness has been used for the test. Tensile test gives us the value of yield strength and ultimate tensile strength along with strain-hardening exponent and strength coefficient. Anisotropy is calculated in 0°, 45° and 90° rolling direction. Vickers micro-hardness test is done in order to find out the hardness of the IF steel. Finite element analysis is done by applying appropriate material model and boundary conditions for accurate prediction of sheet formability and cupping behavior. Important aspects like strain distribution and stress concentration are studied. The results that are obtained after the simulation are then validated against the experimental value and on comparing the experimental and simulated value matches quite well with depth of cup. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Finite element method

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An efficient waste management technique with IoT based smart garbage system

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Materials Today: Proceedings 2023年 80卷 3140-3143页

作者： Karthik, M. Sreevidya, L. Nithya Devi, R. Thangaraj, M. Hemalatha, G. Yamini, R. Department of Electrical and Electronics Engineering Sri Ramakrishna Engineering College Tamil Nadu Coimbatore641 022 India Department of Electrical and Electronics Engineering VSB College of Engineering Tamil Nadu Coimbatore642 109 India Department of Electrical and Electronics Engineering Coimbatore Institute of Engineering & Technology 641 055 Tamil Nadu India Department of Robotics and Automation Sri Ramakrishna Engineering College Tamil Nadu Coimbatore641 022 India

Many cities now have public trash cans that are overflowing due to the continual growth of rubbish. The dustbins are not cleaned on time by the bin collector. As a result, the city becomes unclean, the environment becomes contaminated, and the atmosphere becomes unsanitary. It distributes a foul odor in the waste, which may be harmful to our human health. To avoid this problem, keep the environment clean and create a healthy environment. The ultrasonic sensor detects the amount of trash in the trash can. We created a low-cost embedded device for city sanitation that allows the web server to track the location of each street. It's simple to tell whether a dustbin is full or not. As soon as the level hits a certain maximum pre-setted limit, automatically the information is sent to the bin collector. The bin collector will use the internet to access their mobile phone and will take immediate action to clean up the city. © 2021

关键词： Ultrasonic applications

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Smart Rear Underrun Safety Shield (Sruss) for Hybrid Vehicles to Prevent Collisions with the Rear of Heavy Trailers

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Journal of engineering Science and Technology Review 2024年第4期17卷 83-98页

作者： Patil, Rajesh V. Department of Mechanical – Robotics & Automation Engineering MIT World Peace University Maharashtra Pune India

The deadliest accident ratio for cars and trucks on highways occurs when vehicles are running underneath trucks, causing serious and even fatal injuries to the occupants of the vehicle. When heavyweight trucks collide with automobiles, passengers in the car are not shielded from potentially deadly injuries by the back safety shield's improper geometry. A Smart Rear Underrun Safety Shield (SRUSS) for rear impact and rear underrunning of hybrid passenger cars and heavyduty trailers was created because of this work. According to testing conducted by the Vehicle Research and Development Establishment (VRDE), the current safety shield has higher distortion. Finite element analysis was used to model and test the cleverly adapted safety shield under Indian Standard 14812-2005 regulatory circumstances. Additionally, it was produced and tested internally with the same regulatory requirements. A certified testing setup was used to effectively confirm the safety shield. Through accreditation from the Automobile Research Association of India (ARAI) and real-world verification testing at VRDE, the performance of a proposed Smart Rear Underrun Safety Shield (SRUSS) for hybrid vehicles was examined. The results obtained have satisfied the road transport safety standards of the Indian Standard 14812-2005. © 2024 School of Science, DUTH. All rights reserved.

关键词： Trucks

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Early Detection and Treatment of Skin Diseases Using Advanced Image Preprocessing and Machine Learning Techniques 4

Early Detection and Treatment of Skin Diseases Using Advance...

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4th International Conference on Ubiquitous Computing and Intelligent Information Systems, ICUIS 2024

作者： Pandian, Jeswin Paul Jegan, R. Jerlinkasmir, R. Jose, P. Subha Hency Raj, P. Anantha Christu Karunya Institute of Technology and Science Division of Biomedical Engineering Coimbatore India Karunya Institute of Technology and Science Department of Mathematics Coimbatore India Karunya Institute of Technology and Science Division of Robotics and Automation Engineering Coimbatore India

ISBN: (纸本)9798331529635

This research aims to develop a more accurate and efficient system for classifying skin diseases, including both malignant and non-cancerous conditions. The study utilizes a comprehensive dataset encompassing various skin diseases, including melanomas, basal cell carcinomas, and benign conditions like nevi and warts. To address the challenge of class imbalance with a higher number of melanoma images, the researchers employ techniques like SMOTE (Synthetic Minority Oversampling Technique) to create synthetic data for under-represented classes. The pre-processing stage involves crucial steps like image scaling, augmentation, normalization, and data cleaning to ensure the quality and consistency of the data. Following pre-processing, feature extraction and model training will be conducted. This research has the potential to significantly contribute to the field of dermatology by enabling faster and more precise diagnosis of skin diseases through the use of advanced pre-processing techniques and a diversified dataset. © 2024 IEEE.

关键词： Lung cancer

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High-Performance Admittance Control of An Industrial Robot Via Disturbance Observer 48

High-Performance Admittance Control of An Industrial Robot V...

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48th Annual Conference of the IEEE Industrial Electronics Society, IECON 2022

作者： Samuel, Kangwagye Haninger, Kevin Oh, Sehoon Dgist Department of Robotics and Mechatronics Engineering Daegu Korea Republic of Fraunhofer Ipk Department of Automation Berlin Germany

ISBN: (数字)9781665480253

ISBN: (纸本)9781665480253

Safe physical interaction using admittance control on an industrial robot with inner-loop motion control remains challenging. This is partly due to the low intrinsic admittance and stability issues from inner-loop motion control limitations (e.g. bandwidth). To increase the admittance at an interaction point with the user/environment, this paper proposes a robust admittance control architecture. A disturbance observer (DOB) is used to improve effective inner-loop motion control, suppressing the effects of velocity disturbances. The DOB uses the robot's closed-loop task space velocity control as the nominal model, compensating disturbances between the commanded robot velocity and realized robot velocity output. An admittance controller uses measured force to generate robot velocity commands. Detailed analyses are carried out to theoretically evaluate the proposed control system. Experiments conducted on a COMAU RACER-7-1.4 industrial robot verify the effectiveness of the proposed admittance control scheme and stability in environmental contact. Moreover, the proposed method is simple to implement on the existing robot system. © 2022 IEEE.

关键词： Industrial robots

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UAV Wheat Rust Detection based on FasterNet-YOLOv8

UAV Wheat Rust Detection based on FasterNet-YOLOv8

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2023 IEEE International Conference on robotics and Biomimetics, ROBIO 2023

作者： Liu, Huaiyu Zhang, Yueyuan Liu, Shuguang Zhao, Mengyang Sun, Lining Soochow University School of Mechanical and Electrical Engineering Department of Automation Engineering Suzhou215137 China Soochow University Robotics and Microsystems Center School of Mechanical and Electrical Engineering Suzhou215137 China

ISBN: (纸本)9798350325706

This paper introduces a UAV-based wheat rust detection system employing deep learning techniques. To address the limitations of traditional wheat rust disease detection methods, such as time and labor-intensive processes, lack of real-time monitoring, and excessive pesticide usage, In this paper, the YOLOv8 algorithm, representing the forefront of object detection methods is chosen for UAV wheat rust detection. We train the model on a prepared dataset. Subsequently, we evaluated 5 models, including YOLOv5, and YOLOv8, at two different scales (n, s) based on average precision (mAP@.5), precision, recall, and FPS. The experimental outcomes establish the superiority of the enhanced FasterNet-YOLOv8 model over YOLOv8 and YOLOv5 across all metrics, encompassing detection accuracy and processing speed. These findings affirm the viability of our suggested model within the UAV wheat rust monitoring system and underscore the efficacy of the model enhancements. © 2023 IEEE.

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