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Evaluation of a 429 MHz band multiple folded planar inverted-f antenna near the human body 9

Evaluation of a 429 MHz band multiple folded planar inverted...

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9th IEEE Global Conference on Consumer Electronics, GCCE 2020

作者： Muto, Kanata Fujii, Katsuyuki Okumura, Yasuyuki Nanzan University Graduate Program of Mechatronics Graduate School of Science and Engineering Nagoya Japan Nanzan University Department of Mechatronics Faculty of Science and Engineering Nagoya Japan

ISBN: (纸本)9781728198026

When mobile communication terminals are used, miniaturized antennas interact with the human body. For example, a planar inverted-F antenna, which is a typical small antenna, is the result of the application of various miniaturization techniques. In previous research, a multiple folded planer inverted-F antenna working at a 429 MHz band was proposed to be mounted on a housing. However, the evaluation of the performance of this equipment has not been established near the human body. Therefore, in this paper, its behavior is evaluated through simulation and measurement. The specific absorption rate is also evaluated through this simulation. © 2020 IEEE.

关键词： Microstrip antennas

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A Multi Soft-sensor Approach for the Development of Emergencies Detection Units on the Edge

A Multi Soft-sensor Approach for the Development of Emergenc...

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Workshop on Metrology for Industry 4.0 and IoT

作者： Franklin Oliveira Daniel G. Costa Flávio Assis Ivanovitch Silva Graduate Program in Mechatronics Federal University of Bahia Salvador Brazil INEGI Faculty of Engineering University of Porto Porto Portugal Department of Computer Engineering and Automation Federal University of Rio Grande do Norte Natal Brazil

The adoption of multi-sensor hardware units to detect different types of emergencies in complex scenarios such as Industry 4.0 and Smart Cities is a recent development trend, which have demanded research efforts to optimize the way these units are assembled, configured, and deployed. However, although their expected advantages, usual multi-sensors emergency-oriented approaches may be constrained by the tight association between physical sensor devices and the emergency detection process. Therefore, this paper proposes an innovative approach to concurrently detect multiple emergencies exploiting the concept of soft-sensor modules, which are implemented on Emergency Detection Units (EDUs) as concurrent tasks along with a high-priority emergency alerting task. The soft-sensor concept defines physical sensors as ordinary input data streams, which will be processed according to the defined algorithms by each particular soft-sensor, allowing detection decisions to be performed on the edge. In order to support the practical exploitation of this concept, a formal specification based on Petri Nets is defined, modeling the concurrent operation of the tasks within an EDU. A proof of concept is also designed based on the affordable Raspberry Pi Pico microcontroller, demonstrating how the proposed approach would behave when two soft-sensors are implemented in a typical detection unit.

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Motion Measurement Methods for Nonlinear Analysis of Electrostatic MEMS Resonators

Motion Measurement Methods for Nonlinear Analysis of Electro...

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Eurocon

作者： Mehdi Ghommem Basil Alattar Michael Lherbette Alaaeldin Elhady Eihab Abdel-Rahman Department of Mechanical Engineering American University of Sharjah Sharjah UAE Mechatronics Graduate Program American University of Sharjah Sharjah UAE SmarAct Metrology Rohdenweg Oldenburg Germany Systems Design Engineering University of Waterloo Waterloo Ontario Canada

In this paper, we compare two measurement techniques to analyze the dynamic response of a MEMS resonator, made of a microcantilever beam, that is electrostatically actuated via a side electrode. The first method is based on a combination of Michelson interferometry, knife-edge analysis, and stroboscopic imaging, and is used to dissect the in-plane and out-of-plane motions of the resonator. The second approach follows the motion-induced current method and is based on a transduction mechanism that converts the movement of the resonator to a current signal. The third harmonic of said current is directly related to the in-plane motion of the resonator. Motion-induced current measurements enable the detection of the nonlinear dynamics associated with the motion of the resonator when actuated with high excitation voltages. The optical and electrical measurements show similar nonlinear features in terms of the location of the cyclic-fold bifurcation in the parameter space and the hysteretic region associated with it. These dynamic features can be exploited for sensing purposes.

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Data-Driven Control and Behavior-Based Control Applied to a SISO Mobile Robot

Data-Driven Control and Behavior-Based Control Applied to a ...

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IEEE Latin American Robotics Symposium, LARS

作者： M. A. Pastrana Karine R. Santos Alceu B. C. de Farias Daniel M. Muñoz Department of Mechanical Engineering Mechatronics Graduate Program Automation and Control Group/GRACO University of Brasilia Brasilia DF Brazil Faculty of Gama Biomedical Engineering Graduate Program University of Brasilia Brasilia DF Brazil Faculty of Gama Electronics Engineering Undergraduate Program University of Brasilia Brasilia DF Brazil

ISBN: (数字)9781665462808

ISBN: (纸本)9781665462815

With the advancement of technology, systems in many different areas of application have become more complex, and obtaining reliable mathematical models is a task that is increasingly becoming more difficult as well. To overcome these issues, new methodologies have emerged, such as the one known as Data-Driven-Control (DDC), which uses the input and output data of the system to design a controller, and Behavior-Based-Control (BBC), which provides the controller based on the desired behavior of a system. In this work, these two methodologies were applied to obtain the transfer function of a Single-Input Single-Output mobile robotic platform that moves parallel to a wall. A Proportional Integral Derivative controller was used to control the left wheel, while the right wheel was set to a constant speed, allowing the mobile robot to maintain a constant distance from the wall. The controller was tuned utilizing root locus methodology with an overshot of 16.7%, settling time of 6.45 seconds, and a static error of 2.1%. Additionally, disturbances were added to test the robustness of the mobile robot model and the PID controller.

关键词： Analytical models Biological system modeling Wheels Transfer functions Robot sensing systems Control systems Mathematical models

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Structural Analysis of Thumb Mechanism Exoskeleton Design for Post-Stroke Rehabilitation

Structural Analysis of Thumb Mechanism Exoskeleton Design fo...

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International Conference on Advanced mechatronics, Intelligent Manufacture, and Industrial Automation (ICAMIMIA)

作者： Rika Dwi Hidayatul Qoryah Harus Laksana Guntur Hendro Nurhadi Handri Prastyo Franciscus Xaverius Kristianta Shendy Chandika Graduate Program of Mechanical Engineering Department Institut Teknologi Sepuluh Nopember Surabaya Indonesia Mechanical Engineering Department Institut Teknologi Sepuluh Nopember Surabaya Indonesia Mechanical Engineering Department Center of Excellence for Mechatronics and Industrial Automation Research Center (PUI-PT MIA-RC) Institut Teknologi Sepuluh Nopember Surabaya Indonesia Undergraduate Program Mechanical Engineering Department University of Jember Jember Indonesia Mechanical Engineering Department University of Jember Jember Indonesia

Stroke is the second cause of death and the third cause of disability in the world. Stroke is a disease caused by a clot in the artery that supplies blood to the brain (ischemia). Rehabilitation is a solution to restore the function of parts of the body that have been disturbed by a stroke. Therefore, exoskeleton robots for stroke therapy are one solution to provide good rehabilitation. The exoskeleton robot supports healthy human hand movements and considers the safety and comfort factors during rehabilitation. The exoskeleton in this research uses a cable and sheath transmission mechanism with a locally situated motor as a design mechanism that guarantees safety and comfort. The design strength can be determined using ANSYS static structural assistance software so that the maximum stress in links 1, 2, and 3 is known within safe limits with anthropometric loading. Apart from that, the static structural simulation results show that link 1 can withstand a maximum load of 20 N or more in the X-axis loading, a load of 15 N in the Y-axis loading, and a load of 15 N in the Y-axis loading, and a load of 10 N in the Z-axis loading. Link 2 can withstand a maximum load of 10 N in the X-axis load and 20 N or more in the Y-axis load. Meanwhile, link 3 can withstand a maximum load of 20 N in the X-axis load and below 10 N in the Y-axis load.

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Implementation of VR-based personal basketball team-practice equipment

Implementation of VR-based personal basketball team-practice...

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IEEE Global Conference on Life Sciences and Technologies (LifeTech)

作者： Hiroki Honma Yoshiaki Iida Yasuyuki Okumura Katsuyuki Fujii Yuki Kuno Graduate Program of Mechatronics Graduate School of Science and Engineering Nanzan University Nagoya Japan Physical Education Center Nanzan University Nagoya Japan Faculty of Science and Engineering Nanzan University Nagoya Japan

ISBN: (数字)9781665418751

ISBN: (纸本)9781665448086

In basketball, the next motion can be instantaneously determined with an accurate understanding of the surrounding conditions. Therefore, it is necessary to develop the ability to judge a situation accurately and perform appropriate actions. Development of such decision-making ability in individual practice can lead to higher efficiency. The purpose of this study is to construct an environment closely resembling interpersonal practice by arranging players in a virtual space using VR technology. As this device is used for practice, the sense of distance from the VR player is important. Hence, this study measures the error between VR players and users.

关键词： Performance evaluation Space technology Image edge detection Conferences Measurement uncertainty Decision making Life sciences

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Parameter Identification of DC Motor Drive Systems using Particle Swarm Optimization

Parameter Identification of DC Motor Drive Systems using Par...

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International Conference on engineering and Emerging Technologies (ICEET)

作者： Ishaq Hafez Rached Dhaouadi Mechatronics Engineering Graduate Program College of Engineering American University of Sharjah Sharjah United Arab Emirates College of Engineering American University of Sharjah Sharjah United Arab Emirates

ISBN: (纸本)9781665427159

Accurate parameter estimation is of increasing importance in system modeling and control of highperformance motor drive systems. The inaccurate calculation or assumption of the system modal parameters may cause instability and/or bias control performance. This work presents the mathematical modeling, simulation, and experimental study to estimate the mechanical parameters of a two-mass-model system in DC motor drives using Artificial Swarm Intelligence. The electrical parameters such as resistance and inductance are usually provided by the DC motor manufacturer. However, the mechanical parameters such as the moment of inertia, and viscous friction will vary when the motor is connected to a mechanical load for a given application. Computer modeling and parameter estimation of the system were carried out using MATLAB/Simulink software. The parameters estimation of the mechanical side of a DC Motor drive system will be converted into an optimization problem using an objective function. The standard PSO algorithm is compared to the proposed modified PSO algorithms in the literature.

关键词： Chaos Motor drives Parameter estimation Heuristic algorithms Software algorithms DC motors Search problems

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Real engineering Problems in an Undergraduate Course: The learning methodologies and assessment tools

Real Engineering Problems in an Undergraduate Course: The le...

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World engineering Education Forum - Global engineering Deans Council (WEEF-GEDC)

作者： Ricardo A. Diogo André L.A.C. Venâncio Maria Angela M. Roveredo Santos Eduardo F.R. Loures Neri dos Santos Knowledge Engineering&Management Graduate Program Federal University of Santa Catarina Florianopolis Brazil Industrial&Systems Engineering Graduate Program Pontifical Catholic University of Parana Curitiba Brazil Control and Automation Engineering/Mechatronics Engineering Pontifical Catholic University of Parana Curitiba Brazil

ISBN: (纸本)9781665424899

This paper presents the context of the Ubiquitous Computing course carried out in an Industrial engineering undergraduate program throughout 2020 and the first semester of 2021. This course took advantage of the Institutional Modernization program led by the Control and Automation engineering Undergraduate program, which consists in the modernization of undergraduate engineering programs at the Pontifical Catholic University of Paraná. The course aimed to help develop competencies, i.e., a set of knowledge, skills, and attributes aligned with Student Outcomes suggested by ABET. Also, the course proposal brought the productive sector very close to the academic environment, proposing real engineering problems as challenges. However, what are the methods and assessment tools for practical learning in a course with modern elements? This paper proposed the flipped learning and the Challenge-Based Learning Framework with the support of the CDIO Framework as learning methodologies to answer such question. Additionally, quizzes, tests, presentations, rubrics, and peer evaluation were applied as assessment tools to measure the student's progress. Finally, students were listened to about their perceptions during the course. The results suggested that the learning methodologies and assessment tools are suitable for the course context, although some improvements are expected for the following course offers. Moreover, students approved the initiative to bring in real challenges proposed by companies, the mentoring hours, and the feedback about the projects.

关键词： Automation Companies Industrial engineering Ubiquitous computing Proposals Mentoring engineering education

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GNN-Based Point Cloud Maps Feature Extraction and Residual Feature Fusion for 3D Object Detection

GNN-Based Point Cloud Maps Feature Extraction and Residual F...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： Wei-Hsiang Liao Chieh-Chih Wang Wen-Chieh Lin Graduate Degree Program of Artificial Intelligence National Yang Ming Chiao Tung University Hsinchu Taiwan Department of Electrical and Computer Engineering National Yang Ming Chiao Tung University Hsinchu Taiwan Mechanical and Mechatronics Systems Research Laboratories Industrial Technology Research Institute Hsinchu Taiwan Institute of Multimedia Engineering National Yang Ming Chiao Tung University Hsinchu Taiwan

LiDAR detection of long-range vehicles is challenging because very few and sparse points are measured in long distances and vehicles with similar shapes of targets could lead to false positives easily. To tackle these challenges, taking the environment information (HD maps) into account could be beneficial to predetermine where targets are more or less likely to appear. Compared with semantic maps, HD maps formed by point clouds provide much richer information from surrounding static objects and scenes. In this work, we construct a GNN-based feature extraction of point cloud maps to increase the receptive fields of learning map features. Our work is based on PVRCNN, the state-of-the-art LiDAR object detection method. With point-wise and voxel-wise features obtained from PVRCNN, residual feature fusion is proposed to fuse the features from PVRCNN and the map features from GNN. Our approach is evaluated on NuScenes dataset. It achieves a 24.78% average precision improvement for long-range objects at 40–50 meters, the farthest areas with ground truth annotation. Our approach also has a 4.22% reduction of false positives in the entire sensing areas.

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Evaluation of the electric field distribution during bending for wearable two-dimensional communication sheets in the 2.4-GHz band 8

Evaluation of the electric field distribution during bending...

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8th IEEE Global Conference on Consumer Electronics, GCCE 2019

作者： Uda, Ibuki Fujii, Katsuyuki Okumura, Yasuyuki Graduate Program of Mechatronics Graduate School of Science and Engineering Nanzan University Nagoya Japan Faculty of Science and Engineering Nanzan University Department of Mechatronics Nagoya Japan

ISBN: (纸本)9781728135755

A communication medium known as a wearable two-dimensional communication sheet that can locate multiple small devices on clothes is being researched. By wearing the sheet, the desired communication may not be achieved because the sheet is bent owing to human movement. Therefore, in this study, we employ the finite-difference time-domain (FDTD) method to evaluate the electric field distribution inside the sheet in the 2.4-GHz band by considering the bending angle of the sheet to be a parameter. © 2019 IEEE.

关键词： Finite difference time domain method

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