Examinando por Materia "Autonomous agents"

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    Ítem
    Combining fuzzy, PID and regulation control for an autonomous mini-helicopter
    (ELSEVIER SCIENCE INC, 2007-05-15) Sanchez, Edgar N.; Becerra, Hector M.; Velez, Carlos M.; Universidad EAFIT. Escuela de Ciencias; Modelado Matemático
    This paper reports on the synthesis of different flight controllers for an X-Cell mini-helicopter. They are developed on the basis of the most realistic mathematical model currently available. Two hybrid intelligent control systems, combining computational intelligence methodologies with other control techniques, are investigated. For both systems, Mamdani-type fuzzy controllers determine the set points for altitude/attitude control. These fuzzy controllers are designed using a simple rule base. The first scheme consists of conventional SISO PID controllers for z-position and roll, pitch and yaw angles. In the second scheme, two of the previous PID controllers are used for roll and pitch, and a linear regulator is added to control altitude and yaw angle. These control schemes mimic the action of an expert pilot. The designed controllers are tested via simulations. It is shown that the designed controllers exhibit good performance for hover flight and control positioning at slow speed. © 2006 Elsevier Inc. All rights reserved.
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    Performance analysis of the ubiquitous and emergent properties of an autonomic reflective middleware for smart cities
    (Springer, 2020-01-01) Aguilar, J.; Jerez, M.; Mendonça, M.; Sánchez, M.; Aguilar, J.; Jerez, M.; Mendonça, M.; Sánchez, M.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
    One of the biggest challenges in a Smart City is how to describe and dispose of the enormous and multiple sources of information, and how to share and merge it into a single infrastructure, in a timely and correct manner. A Smart City requires computational platforms, which allow the interconnection of multiple and embedded systems, such that the technology is integrated with people, and can respond to unpredictable situations. The integration of information and communications technology in these spaces, allows exploiting the wealth of information and knowledge generated in a Smart City, and improving its planning and services offered to its citizens. In this way, the people are immersed in these spaces, which are aware of their presence (context-sensitive) and adapt to their needs. The context analysis in a smart city allows making available services and information, to support ubiquitously the activities of the individuals. This study aims to analyze the emerging and ubiquitous capabilities of an Autonomic Reflective Middleware. The Middleware is based on intelligent agents that can be adapted to the existing dynamism in a city for, ubiquitously, responding to the requirements of citizens. It uses emerging ontologies that allow, not only the adaptation to the context of the moment and in real-time but also responds to unforeseen situations. © 2020, Springer-Verlag GmbH Austria, part of Springer Nature.