Logo do repositório

Percorrer por autor "Coelho, J.A.B."

A mostrar 1 - 2 de 2
  • Development of a 2-DoF antenna radiation measurement system
    Publication . Leme, Mauro; Coelho, J.A.B.; Coelho, João Paulo
    Understanding antenna radiation patterns is crucial for optimizing wireless communication systems. Although simulation tools predict radiation patterns during development, environmental conditions in real-world settings substantially influence outcomes. Commercial measurement systems, though precise, are often prohibitively expensive for education. This work presents a low-cost, two-axis computerised system for measuring antenna radiation patterns at 868 MHz, integrating Arduino-based control, stepper motors, and power sensors. Tested with a Yagi-Uda antenna, it yields results consistent with simulations, serving as a practical tool for telecommunications classes. By enabling real-time visualization, this mechatronic platform enhances student understanding of antenna behaviour. Designs will be shared openly to support replication.
    2025Comunicação em conferência Acesso restrito Ver mais
  • An OpenModelica package for BELBIC
    Publication . Coelho, João Paulo; Coelho, J.A.B.; Braz-César, Manuel
    This paper presents the development and implementation of a new package for OpenModelica that integrates the Brain Emotional Learning Based Intelligent Controller (BELBIC) approach into control system simulations. BELBIC, inspired by neurobiological models of emotional learning, has demonstrated effectiveness in handling complex, nonlinear, and adaptive control problems. The proposed package provides a modular and user-friendly framework for integrating BELBIC enabling researchers and engineers to design, simulate, and analyze intelligent control strategies within an open-source environment. Key features of the package include customizable emotional response parameters and compatibility with existing Modelica libraries. To validate the package, a set of examples are included which demonstrates its application to the control of common dynamic systems. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2026.
    2026Comunicação em conferência Acesso restrito Ver mais