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5th International Symposium on Instrumentation systems, Circuits and Transducers, INSCIT 2021

作者： Cantanhede, Nilton Rodrigues Santana, Ewaldo Eder Carvalho Da Silva Junior, Paulo Fernandes De Jesus Barros, Jonas Freire, Raimundo Carlos Silverio State University of Maranhao Graduating Program in Engineering Computation and Systems São Luís Brazil Graduated in Mathematics The Federal University of Maranhão São Luís Brazil Federal University of Campina Grande Graduate Program in Electrical Engineering Campina Grande Brazil

ISBN: (纸本)9781728197265

In this work, is developing a method for obtaining the point of impact of a rocket by telemetry data and a Slant Range device. The trajectory data was obtained from a real flight path by merging the angular components of a telemetry antenna (azimuth and elevation) and the radial distance information provided by the Slant Range device. Position components were analyzed with the Telemetry antenna in automatic mode (in tracking), comparing with the tracking performance performed by the location radar. The result is obtained by the composition of the coordinates of the Telemetry-Slant Range set. A significant reduction in the search area can be used as an alternative form of use, providing additional location information for payload recovery around the actual point of impact. © 2021 IEEE.

关键词： Rockets

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Minimum Realization Tuning Strategy for Dynamic Matrix Control

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IFAC Proceedings Volumes 2014年第3期47卷 1314-1319页

作者： Daniel C. Jeronymo Antonio A.R. Coelho Automation and Systems Engineering Graduate Program Federal University of Santa Catarina UFSC Florianópolis SC Brazil

In this paper autotuning and self-tuning methods for Dynamic Matrix Control (DMC) are presented with application to single-input single-output (SISO) processes which can be approximated by a first-order-plus-dead-time model. In order to validate the method a nonlinear control valve system described by a Wiener process is simulated. This process was identified by a Hammerstein model and controlled by DMC with output compensator. The proposed tuning methods have its performance compared to another standard method found in literature, showing more conservative results regarding smoothness of the control action while maintaining adequate performance on set-point tracking.

关键词： Model-based control nonlinear control first-order-plus-dead-time Autotuners Self-tuning control

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Urban Digital Twins for Synthetic Data of Individuals with Mobility Aids in Curitiba, Brazil, to Drive Highly Accurate AI Models for Inclusivity

Urban Digital Twins for Synthetic Data of Individuals with M...

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8th International Conference on Science, Technology and Innovation for Society, CITIS 2023

作者： Luna-Romero, Santiago Felipe Stempniak, Charles Roberto de Souza, Mauren Abreu Reynoso-Meza, Gilberto Health Technology Graduate Program Pontifícia Universidade Católica do Paraná Curitiba80215-901 Brazil Automa Geo "Digital Twin Platform" Curitiba Brazil Industrial and Systems Engineering Graduate Program Pontifícia Universidade Católica do Paraná Curitiba80215-901 Brazil

ISBN: (纸本)9783031520891

This article delves into the significance of urban digital twins in generating synthetic data specifically tailored for individuals with disabilities. It explores how this data can be effectively utilized to construct artificial intelligence (AI) models that promote inclusivity and enhance accessibility in urban environments. The article thoroughly examines the challenges and opportunities associated with acquiring data on individuals with disabilities, taking into account the ethical and practical implications of generating and utilizing synthetic data for the development of accessible and inclusive technologies. Using the city of Curitiba, Brazil as a case study, which has undergone scanning, digitization, and transformation into an urban digital twin, avatars have been strategically placed to enable the detection of individuals with disabilities within diverse scenarios and perspectives in urban environments. Consequently, this approach provides a diverse and realistic representation of the situations in which individuals with disabilities may find themselves in urban settings, contributing to advancements in urban planning and technology by emphasizing the importance of digital twins in generating synthetic data to promote inclusivity and accessibility for individuals with disabilities. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Computer vision

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Optimization and analysis of variability in high precision injection molding

Optimization and analysis of variability in high precision i...

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ASPE Spring Topical Meeting on Precision Micro/Nano Scale Polymer Based Component and Device Fabrication, ASPE 2005

作者： Castro, Carlos E. Lilly, Blaine Castro, José M. Ríos, Mauricio Cabrera Department of Industrial Welding and Systems Engineering Ohio State University Columbus OH 43202 United States Graduate Program in Systems Engineering Universidad Autónoma de Nuevo León San Nicolás de los Garza Nuevo-León 66450 Mexico

ISBN: (纸本)1887706372

Injection Molding (IM) is considered to be the most important process for mass-producing plastic products. One of the biggest challenges facing injection molders is to determine the best settings for the controllable process variables (CPVs). Selecting the proper settings is crucial because the behavior of the polymeric material during shaping is highly influenced by the process variables. The difficulty of optimizing an IM process is that the performance measures (PMs), such as surface quality or cycle time that characterize the adequacy of the part for its intended purpose usually show conflicting behavior. Furthermore, in actual molding, the CPVs will vary over some range during molding. This inconsistency of the process variables will lead to variability in the PMs. In high precision manufacturing, in particular for micro and nano scale components and devices, this variability needs to be minimized, and if possible eliminated. Thus, the variability in the PMs needs to be included in the optimization problem. The aim of this work is to demonstrate a method based on CAE, statistical testing, artificial neural networks (ANNs), and data envelopment analysis (DEA) to find the optimal compromises between multiple PMs and their variability to prescribe the values for the CPVs in IM. We present an example where the optimization is carried out in two phases. Phase one uses the PMs that are significantly affected by the injection gate location in order to prescribe two possible injection gates. Phase two of the optimization uses Data Envelopment Analysis (DEA) to find a PM-based efficient frontier for each injection gate considering process variability. These two efficient frontiers are then compared to select the best location. Other possible applications are discussed.

关键词： Injection molding

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A simulation methodology to evaluate electromagnetic compatibility in printed circuit boards 4

A simulation methodology to evaluate electromagnetic compati...

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4th International Symposium on Instrumentation systems, Circuits and Transducers, INSCIT 2019

作者： Comin, Rodrigo Ferreira, Sandro Binsfeld Rhod, Eduardo Luis Product Development Engineering Valeo Thermal Bus Systems Caxias do Sul Brazil E. E. Graduate Program - Itt-Chip Unisinos University Sao Leopoldo Brazil

ISBN: (纸本)9781728121093

In competitive segments like automobile and bus manufacturing industries, quality of vehicles need to be improved constantly to meet internal and external market demands. Compliance with international standard regulations for electronic equipment require expensive tests as part of the design and certification processes. In this work, a methodology to simulate electromagnetic compatibility tests is proposed, enabling cost reduction during certification, and consequently reducing development time. Two different printed-circuit-board layouts of a DC/DC-converter case study are compared through measurements and simulations to validate the methodology. © 2019 IEEE.

关键词： Electromagnetic compatibility

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Exploring 3D Reconstruction with Drone Images: Advances and Challenges in Urban Environments 50

Exploring 3D Reconstruction with Drone Images: Advances and ...

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50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024

作者： Miranda Baldivieso, Thiago João da Silva Batista, Taise Grazielle Chagas, Fabio Suim Rodrigues Velho, Luiz Carlos Pacheco Ferreira Rosa, Paulo Fernando Defense Engineering Graduate Program Military Institute of Engineering Rio de Janeiro Brazil State Institute of the Environment Inea RJ Rio de Janeiro Brazil Department of Science and Industry systems University of South-Eastern Norway Kongsberg Norway Department of Computer Graphics Institute for Pure and Applied Mathematics Rio de Janeiro Brazil Electrical Engineering Graduate Program Military Institute of Engineering Rio de Janeiro Brazil

ISBN: (纸本)9781665464543

This working-in-progress paper aims to present a three-dimensional reconstruction using aerial images in different environments. The experiments were conducted with aircraft in both external and internal settings, starting with image acquisition, followed by the application of specific photogrammetry software-both commercial and open-source-and concluding with a qualitative evaluation of the results. © 2024 IEEE.

关键词： Aerial photography

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Human identification using X-Ray image matching

Human identification using X-Ray image matching

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2017 International MultiConference of Engineers and Computer Scientists, IMECS 2017

作者： Ishigami, Ryudo Thi Zin, Thi Shinkawa, Norihiro Nishii, Ryuichi Department of Electrical and Systems Engineering Graduate School of Engineering University of Miyazaki Miyazaki Japan Department of Electrical and Systems Engineering Faculty of Engineering University of Miyazaki Miyazaki Japan Department of Radiology Faculty of Medicine University of Miyazaki Miyazaki Japan Department of Diagnostic Imaging Program Molecular Imaging Center National Institute of Radiological Sciences Chiba Japan

ISBN: (纸本)9789881404732

Human identification both prior to death and after death is becoming one of the major worldwide issues nowadays for law enforcement aspect as well as social and security aspects. General identification prior to death is possible through comparison of many biometric identifiers. However identification after death is impossible using behavioral biometric such as speech and actions. Moreover, in many circumstances such as natural disasters, air plane crash or a case of identification a couple of weeks later, most of physical biometrics may not be useful for identification due to the decay of some soft tissues. A lot of research has been done in the field of different biometric modalities like Finger-print, Iris, Hand-Veins, Dental biometrics etc. to identify humans. However only a little has been known the chest X-Ray biometric which was very powerful method for identification especially during the mass disasters in which most of other biometrics are unidentifiable. Therefore in this paper, we propose a stochastic modelling approach for human identification after death by using chest X- Ray prior to death database. Some experimental results are shown based on real life dataset and confirmed.

关键词： Biometrics

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Resolution of one-dimensional bin packing problems using augmented neural networks and minimum bin slack

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International Journal of Innovative Computing and Applications 2016年第4期7卷 214-224页

作者： de Almeida, Ricardo Steiner, Maria Teresinha Arns Industrial and Systems Engineering Post-Graduate Program Pontifical Catholic University of Paraná - PUCPR Curitiba Brazil

The objective of this work is to compare the augmented neural network (AugNN) metaheuristic to minimum bin slack (MBS) heuristic to solve combinatorial optimisation problems, specifically, in this case, the one-dimensional bin packing problem (1D-BPP), a class of cutting and packing problems (CPP). CPP are easily found among various industry sectors and its proper treatment can improve the use of stocks in cutting problems or optimise physical space in packing problems. In order to optimise AugNN parameters, a design of experiment (DOE) was applied in order to guide a statistical analysis of different configurations of AugNN. The tests, developed in many benchmark problems found in the literature, showed that MBS heuristic was, in general superior, both in terms of the solution quality, which is about 70% better, and computational time, which is about 90% less. Copyright © 2016 Inderscience Enterprises Ltd.

关键词： Design of experiments

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Using simulation to determine the maneuvering performance of the WAGB-20

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NAVAL ENGINEERS JOURNAL 1998年第1期110卷 171-188页

作者： Lecourt, EJ E.J. Lecourt Jr. is a graduate of the USCG Academy. Received MS degrees from MIT in Electrical Engineering and Naval Architecture and Marine Engineering. Currently Program Manager at PDI Division of Bird-Johnson Companey. Forty years experience in research design analysis and testing of marine engineering systems with perarticular emphasis on electric propulsion systems. While in the USCG served two years aboard a turbo-electric ship and two years aboard a diesel-electric ship. Member ASNE and SNAME.

The WAGB-20 is a U. S. Coast Guard polar icebreaker with an integrated diesel-electric propulsion system. Power is generated by four main diesel engines driving AC generators. Two main 15,000-HP AC synchronous propulsion motors are directly coupled to the port and starboard propellers. Two cycloconverters provide variable-voltage, variable-frequency power for controlling each propulsion motor. The simulation of the electric propulsion system is being developed to analyze the steady-state and transient performance of the system during open water and icebreaking operations. The objectives of the analysis are to support propulsion plant design, aid in the integration of system components, develop control system algorithms, predict system performance, and determine the requirements for dynamic braking resistors. The analysis consists of mathematical models for the ship, shaft systems, propellers, AC synchronous propulsion motors, motor controllers, cycloconverters, generators, generator exciters, voltage regulators, diesel engines, and engine governors. These models are based on actual machinery data. The WAGB-20 specification requires the propulsion system to have the capability of going from full power ahead to full power astern in open water in 25 seconds or less. This paper presents the simulation results which show that by controlling the regenerative power the crash astern maneuver can be performed to meet this requirement without the need for dynamic braking resistors.

关键词： Icebreakers

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An improved explicit scheme for whole-building hygrothermal simulation

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建筑模拟（英文版） 2018年第3期11卷 465-481页

作者： Suelen Gasparin Julien Berger Denys Dutykh Nathan Mendes Thermal Systems Laboratory Mechanical Engineering Graduate Program Pontifical Catholic University of Paraná Rua Imaculada Concei??o 1155 Curitiba - Paraná 80215-901 Brazil LAMA UMR 5127 CNRS Université Savoie Mont Blanc Campus Scientifique 73376 Le Bourget-du-Lac Cedex France Université Savoie Mont Blanc CNRS LOCIE F-73000 Chambéry France LAMA UMR 5127 CNRS Université Savoie Mont Blanc Campus Scientifique 73376 Le Bourget-du-Lac Cedex France Thermal Systems Laboratory Mechanical Engineering Graduate Program Pontifical Catholic University of Paraná Rua Imaculada Concei??o 1155 Curitiba - Paraná 80215-901 Brazil

Implicit schemes require important sub-iterations when dealing with highly nonlinear problems such as the combined heat and moisture transfer through porous building elements. The computational cost rises significantly when the whole-building is simulated, especially when there is important coupling among the building elements themselves with neighbouring zones and with HVAC (heating ventilation and air conditioning) systems. On the other hand, the classical Euler explicit scheme is generally not used because its stability condition imposes very fine time discretisation. Hence, this paper explores the use of an improved explicit approach—the DuFort–Frankel scheme—to overcome the disadvantage of the classical explicit one and to bring benefits that cannot be obtained by implicit methods. The DuFort–Frankel approach is first compared to the classical Euler implicit and explicit schemes to compute the solution of nonlinear heat and moisture transfer through porous materials. Then, the analysis of the DuFort–Frankel unconditionally stable explicit scheme is extended to the coupled heat and moisture balances on the scale of a one- and a two-zone building models. The DuFort–Frankel scheme has the benefits of being unconditionally stable, second-order accurate in time O(Δt2) and to compute explicitly the solution at each time step, avoiding costly sub-iterations. This approach may reduce the computational cost by twenty as wel as it may enable perfect synchronism for whole-building simulation and co-simulation.

关键词： heat and moisture transfer numerical methods finite-differences explicit schemes DuFort–Frankel scheme whole-building simulation

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