8 documents found, page 1 of 1
A deep learning approach for average height estimation in oak colony using rgb ...
Britto, Raphael Duarte; Mendes, João; Grilo, Vinicius; Castro, João Paulo; Santos, Murillo Ferreira dos; Castro, Marina; Pereira, Ana I.; Lima, JoséMany strategies have been developed to monitor the volume of volume of Above Ground Biomass (AGB) in forest areas as a fundamental step for managing carbon concentration. This study explores the use of use of Light Detection and Ranging (LiDAR) data obtained through Unmanned Aerial Vehicles (UAVs) to estimate height values in a vegetation colony composed of oaks (Quercus pyrenaica Willd.) in northern Portugal. ...
Control Allocation and Controller Tuning for an Over-Actuated Hexacopter Tilt-R...
Libório, Leandro Oliveira; Pimentel, Gabriel Oliveira; Santos, Murillo Ferreira dos; Fernandes, Fernanda Mara; Lima, JoséThis work presents the control allocation and tuning methodology for an over-actuated Hexacopter Tilt-Rotor (HTR) designed for precision agriculture applications. The HTR's innovative design includes two independently tiltable rotors, enhancing stability and forward velocity, making it suitable for low-altitude maneuvers in agricultural environments. The study focuses on the implementation of a cascade Proporti...
A YOLO-Based Approach for Detection of Olive Knot Disease through UAV and Compu...
Morais, Maurício Herche Fófano de; Mendes, João; Santos, Murillo Ferreira dos; Fernandes, Fernanda Mara; Lima, José; Pereira, Ana I.This work presents an approach for detecting olive knot disease in olive trees, utilizing Computer Vision (CV), Unmanned Aerial Vehicle (UAV) based imagery, and Machine Learning (ML) within the context of Precision Agriculture (PA). The study focuses on applying the You Only Look Once (YOLO) deep learning architecture to develop a model capable of identifying trees affected by the disease with accuracy and spee...
Advancing Sustainability and Productivity: The Role of Precision Agriculture in...
Fernandes, Fernanda Mara; Santos, Murillo Ferreira dos; Morais, Maurício Herche Fófano de; Lima, José; Pereira, Ana I.; Mercorelli, PaoloPrecision agriculture has emerged as a vital approach to modern agricultural management, addressing the dual challenge of increasing food production while preserving the environment. Its importance lies in its ability to leverage advanced technologies to optimize productivity, reduce waste, and ensure sustainability, particularly in high-value crops such as vineyards and olive groves. This study explores the ap...
Attitude Determination and Control System Open-Source Simulator of a 1U CubeSat...
Resende, Túlio Santos; Silva, Josué Lima da; Peixoto, Alessandro Jacoud; Santos, Murillo Ferreira dos; Pereira, Ana I.; Lima, JoséThis work developed an open-source educational simulator to evaluate control schemes for small CubeSat-class satellites of 1U size (1 unit). Attitude (orientation) estimation was achieved using the Three-Axis Attitude Determination (TRIAD) algorithm, commonly employed in competitions and real-world CubeSats. A simple Proportional (P) controller was designed to regulate the CubeSat's angular velocity. Additional...
A Comparison of PID Controller Architectures Applied in Autonomous UAV Follow u...
Bonzatto Junior, Luciano; Berger, Guido S.; Braun, João A.; Pinto, Milena F.; Santos, Murillo Ferreira dos; Oliveira Júnior, Alexandre deThe cooperation between Unmanned Aerial Vehicles (UAVs) and Unmanned Ground Vehicles (UGVs) has brought new perspectives and e!ectiveness to production and monitoring processes. In this sense, tracking moving targets in heterogeneous systems involves coordination, formation, and positioning systems between UGVs and UAVs. This article presents a Proportional-Integral-Derivative (PID) control strategy for trackin...
Alocação de controle desacoplada rápida em sistemas de controle superatuados
Santos, Murillo Ferreira dosSistemas superatuados geralmente requerem métodos de alocação de controle não lineares para mapear as Ações de Controle Virtuais (ACVs) em Ações de ControleReais (ACRs). Esse processo exige esforços computacionais que, as vezes, são limitados em plataformas robóticas embarcadas. E neste contexto que este trabalho apresenta o projeto de um Veículo Aéreo Não-Tripulado (VANT) do tipo Quadrotor Tilt-Rotor (QTR) sup...
Controle tolerante a falhas de um sistema de propulsão de hexacópteros
Santos, Murillo Ferreira dosEste trabalho tem o objetivo de desenvolver o controle tolerante a falhas de um sistema de propulsão de hexacópteros, visando mante-lo em condições de voo. Inicialmente, apresenta-se a modelagem do sistema, abordando o modelo cinemático e dinâmico da aeronave para a simulação e controle do sistema onde as forças gravitacionais e de propulsão são consideradas. Falhas nos sistemas de propulsão são inseridas para ...