https://jme.ifce.edu.br/index.php/jme/issue/feedJournal of Mechatronics Engineering2026-05-05T14:13:49+00:00Josias Guimarães Batistajosiasbatista@ifce.edu.brOpen Journal Systems<p>The Journal of Mechatronics Engineering is an electronic publication created by the Federal Institute of Ceará - IFCE. The aim of this journal is to contribute to the dissemination of knowledge through the publication of scientific papers (unpublished and original articles, reviews, and scientific notes) in English. The editorial board of this journal invites researchers, professionals, undergraduate and postgraduate students and to share their experiences with the scientific and academic community through our electronic journal.</p>https://jme.ifce.edu.br/index.php/jme/article/view/136Simulation-Based Learning of Feedback Control Through Planar Robot Motion2026-04-22T11:48:02+00:00Denis Mosconidenis.mosconi@ifsp.edu.brJoão Domingos Pereirajoao.pereira@ifsp.edu.brMarcelo Beckerbecker@sc.usp.br<p>The understanding of feedback control concepts can be challenging for students when theoretical analysis is not directly connected to observable system behavior. Simulation environments can help bridge this gap by allowing learners to visualize the effects of control actions on system dynamics. This work presents a didactic framework for teaching classical proportional feedback control using the ROS~2 Turtlesim simulator. The proposed approach combines mathematical modeling, controller design, and robotic simulation to illustrate how proportional gain influences system response, convergence speed, and trajectory behavior. Simulation results demonstrate that the framework clearly exposes both theoretical properties and practical implementation effects, including actuator saturation and discretization phenomena. Because the system is simple to implement and relies on widely accessible open-source tools, it provides an effective platform for introducing students to feedback control concepts while simultaneously connecting classical control theory with mobile robotics applications.</p>2026-05-05T00:00:00+00:00Copyright (c) 2026 Journal of Mechatronics Engineeringhttps://jme.ifce.edu.br/index.php/jme/article/view/133Computer Vision for Emotion Identification on Sheep Images2026-01-17T11:35:50+00:00Chandra Shekhar Yadavcsyadavrp@gmail.comJosias Guimarães Batistajosiasbatista@ifce.edu.brNícolas Fonteles Leitenicolas@ppget.ifce.edu.brJoão Paulo Arcelino do Regojoaopaulo.rego@gmail.com<p>The rising global demand for meat and dairy products has accelerated the expansion of livestock farming, underscoring the need for advanced technologies to ensure animal welfare and productivity. This research explores the potential of automated monitoring systems, leveraging depth sensors and time-of-flight cameras, to provide valuable insights into environmental conditions, nutrition, health, and productivity. These systems enable the early detection of abnormal behaviors in large-scale farming operations, paving the way for more effective management practices. The study emphasizes the importance of understanding animal needs and introduces advanced models, including EfficientNet, ResNet50, ResNet101, ResNet152, and VGG16, for emotion recognition in sheep. These models achieve impressive accuracy rates ranging from 88% to 93%, significantly enhancing the ability to detect and classify emotional states such as pain. This capability represents a vital component of precision livestock farming, a practice that integrates real-time data with machine learning to support informed decision-making, optimize yields, and mitigate risks. Furthermore, the research highlights methodologies for animal identification, body condition assessment, and pain estimation, showcasing the potential of sophisticated imaging and perception technologies to revolutionize livestock farming. By improving welfare and operational efficiency, these advancements offer a sustainable approach to addressing the growing challenges in modern agriculture.</p>2026-05-05T00:00:00+00:00Copyright (c) 2026 Journal of Mechatronics Engineering