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Publicações

Publicações por Paulo Moura Oliveira

2023

ChatGPT: Assessing Impacts and Perspectives in Engineering Education Using a Genetic Algorithms Case Study

Autores
Oliveira, PM;

Publicação
2023 6th Experiment@ International Conference (exp.at'23), Évora, Portugal, June 5-7, 2023

Abstract
The recent release of ChatGPT-3 by OpenAI may have been a major disruptive mark in terms of Artificial Intelligence based tools. The testing and rapid user adoption rate of ChatGPT-3 was massive with a worldwide impact. Despite its recent public release ChatGPT-3 is already eliciting a mix of positive reactions revealing outstanding positive aspects as well as some negative ones. A short evaluation of ChatGPT-3 is presented, using the context of genetic algorithms, a topic lectured in introductory artificial intelligence courses. Examples outlining potential advantages of adopting ChatGPT and disadvantages which raise ethical issues and may limit its use are presented. © 2023 IEEE.

2023

Hybrid Localization Solution for Autonomous Mobile Robots in Complex Environments

Autores
Rebelo, PM; Valente, A; Oliveira, PM; Sobreira, HM; Costa, P;

Publicação
Robot 2023: Sixth Iberian Robotics Conference - Advances in Robotics, Volume 1, Coimbra, Portugal, 22-24 November 2023

Abstract
Mobile robot platforms capable of operating safely and accurately in dynamic environments can have a multitude of applications, ranging from simple delivery tasks to advanced assembly operations. These abilities rely heavily on a robust navigation stack, which requires stable and accurate pose estimations within the environment. The wide range of AMR’s applications and the characteristics of multiple industrial environments (indoor and outdoor) have led to the development of a flexible and robust robot software architecture that allows the fusion of different data sensors in real time. In this way, and in terms of localization, AMRs have greater precision when it comes to uncontrolled and unstructured environments. These complex environments feature a variety of dynamic and unpredictable elements, such as variable layouts, limited visibility, unstructured spaces, and uncertain terrain. This paper presents a multi-localization system for industrial mobile robots in complex and dynamic industrial scenarios, based on different localization technologies and methods that can interact together and simultaneously. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

2023

Control of a Mobile Robot Through VDA5050 Standard

Autores
Brilhante, M; Rebelo, PM; Oliveira, PM; Sobreira, HM; Costa, P;

Publicação
Robot 2023: Sixth Iberian Robotics Conference - Advances in Robotics, Volume 1, Coimbra, Portugal, 22-24 November 2023

Abstract
Since creating universally capable robots is challenging for a single manufacturer, a diverse fleet of robots from various manufacturers is utilized. However, these heterogeneous fleets encounter communication and interoperability issues. As a result, there is a growing need for a standardized interface that is capable of communicating, controlling and managing a diverse fleet without these interoperability issues. This paper presents a translation software module capable of controlling an autonomous mobile robot and communicating with a ROS-based robot fleet manager using the VDA5050 Standard and exchanging information via the MQTT communication protocol, aiming at flexibility and control across different robot brands. The effectiveness of the software in controlling a mobile robot via the VDA5050 standard was demonstrated by the results. It accurately analysed data from the Robot Fleet Manager, converted it into VDA 5050 JSON messages and skilfully translated it back into ROS messages. The robot’s behavior remained consistent before and after the VDA5050 implementation. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

2017

Teaching/learning PBL activity: Gantry crane control system implementation

Autores
Correia, A; Amaro, B; Junior, E; Barbosa, J; Pinto, T; Bicho, E; Soares, F; Oliveira, PM;

Publicação
2017 25th Mediterranean Conference on Control and Automation, MED 2017

Abstract
This paper presents a teaching/learning experiment running in the laboratorial curricular unit Project I of the 4'h year of the Integrated Master in Industrial Electronics and Computers Engineering at the University of Minho. Project specifications were defined by the three teachers involved in the experience and students were encouraged to look on different solutions for a real-word problem. In a concurrent way, students designed, developed and implemented didactic rigs to control a gantry crane system. The control was performed in open-loop, based on the Posicast feedforward technique, and in closed-loop, using a two-degrees of freedom configuration. The experiment procedure and the project outcomes of two solutions proposed by the students are presented. © 2017 IEEE.

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