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10th International Conference on Science, Technology and Innovation for Society, CITIS 2024

作者： Salazar, Diego Pavón, Wilson Montalvo, William Zambrano, Julio Cesar Automation and Control Postgraduate Program Universidad Politécnica Salesiana Quito Ecuador Automation and Control Postgraduate Program Universidad Politécnica Salesiana Cuenca Ecuador

ISBN: (纸本)9783031870644

This paper proposes a comprehensive solution to the advanced control problem of multivariable systems using Siemens’ TIA (Totally Integrated automation) Portal LSIM (Linear Simulation) package. The process model is validated via Matlab-Simulink to compare and support the implementation of the TIA Portal. The control system is then developed using the Relative Gain Array (RGA) concept to minimize cross-coupling effects between inputs. The study demonstrates how decoupling functions and precise tuning improve system performance, reducing interference and enhancing stability. The results confirm that this integrated control framework improves system efficiency, reliability, and adaptability for industrial applications. © The Author(s) 2025.

关键词： Three term control systems

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Cahn-Hilliard Equation in Noise Reduction and Concentration-Dependent Heat Transfer

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Defect and Diffusion Forum 2024年 436卷 127-136页

作者： Bandeira, João Gabriel Piraine Kurz, Gustavo Braz Buske, Daniela de Quadros, Régis Sperotto Weymar, Guilherme Jahnecke Furtado, Igor da Cunha Control and Automation Engineering Federal University of Pelotas RS Brazil Postgraduate Program in Mathematical Modeling Federal University of Pelotas RS Brazil Sul-Rio-Grandense Federal Institute of Education Science and Technology RS Brazil

The Cahn-Hilliard equation, known for describing the evolution of interfaces in multicomponent systems, can also be employed to noise reduction in mathematical functions and concentration-dependent heat transfer simulations. This work presents a finite difference method discretization of the Cahn-Hilliard equation and explores its applications. For noise reduction, three different noisy functions are simulated, demonstrating effective recovery of original functions despite significant noise levels. In heat transfer simulations, three initial temperature distributions are explored with concentration-dependent thermal diffusivity. Results show that concentration significantly affects thermal diffusivity and heat propagation, leading to non-uniform temperature distributions. Comparative simulations without concentration influence highlight the distinct impact of concentration on thermal behavior. The study underscores a reliable approach to noise reduction and insight into concentration-dependent heat transfer dynamics. © 2024 Trans Tech Publications Ltd, All Rights Reserved.

关键词： Noise abatement

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Computational Study of Dirt's Effect on Solar Panel Efficiency

Computational Study of Dirt's Effect on Solar Panel Efficien...

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Power Electronics and control (SEPOC), Seminar on

作者： Daniel Caldas Soares Ferreira Leandro Maciel da Silva Carlos Torturella Valadão Flávio Barcelos Braz da Silva Postgraduate Program in Control and Automation Engineering Serra Brazil

This paper presents the development of a computational methodology to determine input characteristics correlated with solar power generation. Solar power can be influenced by several factors, such as dirt accumulation on the panels, temperature, irradiation, and location, which may reduce the energy generation capability. Our objective is to quantify losses in photovoltaic power generation due to dirt on the panels using a computational method that analyzes the most correlated input features with solar power generation. Data was collected from a meteorological station and a photovoltaic system located at the Federal Institute of Espirito Santo, Serra campus, Brazil, to develop a dataset. This dataset was then utilized by the computational method to ascertain the most correlated features. Consequently, we were able to evaluate the impact of dirt both when the panels were dirty and after cleaning them. We analyzed the effect of six years of dirt accumulation before cleaning the panels. Following the feature correlation analyses, we opted to use the average solar radiation and temperature readings from the LPNET14 sensor, infrared radiation, and relative humidity to study the dirt's impact. As a result, we determined that cleaning the panels led to a 4.01% increase in the system's power output.

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Memô the Game: Serious Game for Development of Memorization in Children with Autistic Spectrum Disorder 9th

Memô the Game: Serious Game for Development of Memorizat...

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9th Latin American Congress on Biomedical Engineering, CLAIB 2022 and 28th Brazilian Congress on Biomedical Engineering, CBEB 2022

作者： Freitas, Éberte Panceri, João Schreider, Sheila Caldeira, Eliete Bastos-Filho, Teodiano Postgraduate Program in Electrical Engineering Federal University of Espirito Santo Vitoria Brazil Automation and Control Engineering Department Federal Institute of Espirito Santo Linhares Brazil Electrical Engineering Department Federal University of Espirito Santo Vitoria Brazil Postgraduate Program in Biotechnology Federal University of Espirito Santo Vitoria Brazil

ISBN: (纸本)9783031494062

This work presents the architecture and development of the Serious Game (SG) Memô which is aimed at exercising the Short-Term Memory (STM) of children with Autism Spectrum Disorder (ASD). This serious game proposes an individualized functional approach through Dynamic Difficulty Adjustment (DDA), which considers the performance, the expressed facial emotions, and the level of eye attention during child performance. In addition, it is used to recording the presence of hand and eye stereotypies. The SG is developed in Unity 3D, uses MediaPipe to determine the points of the hands, and is executed by our Socially Assistive Robot (SAR), termed Mobile Autonomous Robot for Interaction with Autistics and Trisomy 21 (MARIA T21). We believe that the creation of SGs to assist in the cognitive development of children with ASD and explore the detection of other stereotyped movements, associating them with a communicative and emotional proposal, is feasible. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Serious games

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Computational modeling of a 119 kWp photovoltaic system

Computational modeling of a 119 kWp photovoltaic system

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Power Electronics and control (SEPOC), Seminar on

作者： Leandro Maciel da Silva Daniel Caldas Soares Ferreira Carlos Torturella Valadão Flávio Barcelos Braz da Silva Postgraduate Program in Control and Automation Engineering Federal Institute of Espirito Santo Serra Brasil

An important aspect of medium and large photovoltaic systems is the ability to predict future electricity generation based on predicted meteorological data as well as the technical and structural characteristics of the system. This prediction can be enabled by applying mathematical models or artificial intelligence. This study aims to develop a reliable and valid computational model using measurements from a real 119 kWp photovoltaic plant at the Federal Institute of Espirito Santo. The model considers meteorological data from a solarimetric station located in the same area, as well as system losses in both AC and DC components. The results indicate that the simulated generation closely aligned with the actual figures, achieving an acceptable low percentage error, less than 0.5%, during the period from September to December 2022.

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A Multisensorial Socially Assistive Robot for Therapies with Children with Autism Spectrum Disorder and Down Syndrome Using Serious Games 9th

A Multisensorial Socially Assistive Robot for Therapies wit...

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9th Latin American Congress on Biomedical Engineering, CLAIB 2022 and 28th Brazilian Congress on Biomedical Engineering, CBEB 2022

作者： Panceri, J.A.C. Freitas, E.V.S. Schreider, S.L. Souza, J.C. Caldeira, E.M.O. Bastos-Filho, T.F. Postgraduate Program in Electrical Engineering Federal University of Espirito Santo Vitória Brazil Automation and Control Engineering Department Federal Institute of Espirito Santo Linhares Brazil Electrical Engineering Department Federal University of Espirito Santo Vitória Brazil Postgraduate Program in Biotechnology Federal University of Espirito Santo Vitória Brazil

ISBN: (纸本)9783031494062

Much of the data obtained by health professionals for diagnosis and therapies applied to children with Autistic Spectrum Disorder (ASD) and Down Syndrome (DS) depend on visual observations and interviews with family members and clinical assessments. Therefore, the use of sensors has the potential of complementing this process by generating quantitative data. This work demonstrates that the use of sensors embedded in a Socially Assistive Robot (SAR) developed at UFES/Brazil, termed Mobile Autonomous Robot for Interaction with Autistics and Trisomy 21 (MARIA T21), can be used as a centralized tool to quantify more objective measures of children’s spatial, postural and social behavior during the interaction with the robot through Serious Games (SG) projected on the floor by the robot. The information generated can help therapists in the application of more efficient therapies, as well as monitor the evolution of the children submitted to the protocol with the robot. The results demonstrates the feasibility of using these sensors and evidence the requirements to be evolved. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Serious games

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Proposal of Serious Games for a Socially Assistive Robot Based on Eye Contact and Visual Attention of Children with Autism Spectrum Disorder 9th

Proposal of Serious Games for a Socially Assistive Robot ...

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9th Latin American Congress on Biomedical Engineering, CLAIB 2022 and 28th Brazilian Congress on Biomedical Engineering, CBEB 2022

作者： Negri, Yuri Panceri, João Freitas, Éberte Schreider, Sheila Caldeira, Eliete Bastos-Filho, Teodiano Electrical Engineering Department Federal University of Espirito Santo Av. Fernando Ferrari 514—Goiabeiras ES Vitória29075-910 Brazil Postgraduate Program in Electrical Engineering Federal University of Espirito Santo Vitoria Brazil Automation and Control Engineering Department Federal Institute of Espirito Santo Linhares Brazil Postgraduate Program in Biotechnology Federal University of Espirito Santo Vitoria Brazil

ISBN: (纸本)9783031494062

Eye contact is one of the main human skills, and a prerequisite of verbal language. However, children with Autism Spectrum Disorder (ASD) often have an important deficit in this skill, compromising their entire cognitive and social development. This work shows the development of two Serious Games (SGs), based on the concept of Child-Robot Interaction (CRI), for the exercise and improvement of eye contact and visual attention, as well as concepts such as imitation and emotion recognition. For face detection and eye movement monitoring, an open source development framework of machine learning named MediaPipe was used. Tests with children with ASD will be conducted, and it is expected these SGs have a positive impact regarding the improvement of both eye contact and visual attention for these children. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Serious games

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LMI Observer Design for a Class of Tubular Reactors

LMI Observer Design for a Class of Tubular Reactors

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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Ivan Francisco Yupanqui Tello Alain Vande Wouver Daniel Coutinho Systems Estimation Control and Optimization (SECO) University of Mons Belgium Postgraduate Program in Engineering of Automation and Systems Federal University of Santa Catarina Brazil

ISBN: (数字)9781728198095

ISBN: (纸本)9781728198101

This paper is concerned with the observer design for one-dimensional class of nonisothermal tubular reactors considering in-domain pointwise measurements of temperature over the entire spatial domain. A Lyapunov-based design method is derived for the PDE system providing sufficient conditions, in the form of standard linear matrix inequalities (LMIs), for the exponential convergence of the estimation error with a given decay rate. The approach is applied and tested with a representative case of a tubular reactor with non-monotonic kinetics satisfying the sufficient solvability conditions. Simulation results support the effectiveness of the suggested design.

关键词： Observers Inductors Sensors Measurement uncertainty Linear matrix inequalities Estimation error Boundary conditions

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Extension of Kalman Filtering to Semilinear PDE Systems-Application to Pulp and Paper

Extension of Kalman Filtering to Semilinear PDE Systems-Appl...

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International Conference on System Theory, control, and Computing (ICSTCC)

ISBN: (数字)9781728198095

ISBN: (纸本)9781728198101

This paper deals with the observer design of nonlinear tubular chemical reactor models. The analysis is performed on a linearized version of the model around a steady-state profile, in which some coefficients are a function of the spatial variable. The study starts from a general model of chemical tubular reactors that will serve as a benchmark model for the formulation in the infinite dimensional Hilbert state space. The optimal output injection operator associated to the proposed observer is computed via the solution of the infinite-dimensional Riccati equation in the space variable. The performance of the observer is illustrated through numerical experiments of an industrial pulp bleaching tubular reactor model.

关键词： Mathematical model Inductors Observers Bleaching Steady-state Computational modeling Estimation

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Educational robotics with tangible programming: A digital circuit for blocks communication with code and visual feedback transfer capabilities

Educational robotics with tangible programming: A digital ci...

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IEEE Latin American Robotics Symposium, LARS

作者： Jessica Toledo Salles Cristiane Pelisolli Cabral Rosane Aragon Alexandre Da Silva Simões Postgraduate Program in Electrical Engineering São Paulo State University (Unesp) Institute of Science and Technology Sorocaba Brazil Postgraduate Program in Education Federal University of Rio Grande do Sul (UFRGS) Porto Alegre Brazil Faculty of Education (FACED) Federal University of Rio Grande do Sul (UFRGS) Porto Alegre Brazil Control and Automation Engineering Department (DECA) São Paulo State University (Unesp) Institute of Science and Technology Sorocaba Brazil

ISBN: (数字)9781665462808

ISBN: (纸本)9781665462815

A large number of robotic kits is commercially available for children education nowadays. Regarding the programming possibilities of these kits, they are usually divided into three categories: i) textual languages based kits, ii) digital blocks based kits and iii) tangible blocks based kits. In tangible blocks kits, the programming instructions are represented by physical - touchable - elements like blocks, cards or buttons. Since these are concrete objects, they are usually more playful and accessible for young children mainly in the concrete operational stage. Another relevant aspect in robotic kits is the possibility for children to follow the code execution at runtime. This process may be crucial for comprehending the programming process and for developing debugging abilities. In tangible programming based kits, this visual tracking is far more complex than in textual or digital blocks based kits since it typically requires the transmission of information between a lot of distinct physical pieces. The present work proposes and discusses the implementation of a digital electronic circuit with bluetooth communication designed for educational robotics kit and capable to provide a visual feedback. Results demonstrate that the proposed circuit is functional and feasible for embedding in robotic kits at a low cost.

关键词： Visualization Codes Runtime Costs Education Debugging Robots

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