Browsing by Issue Date, starting with "2001-09-16"
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- Towards emerging intelligent transportation systems technologiesPublication . Figueiredo, Lino; Jesus, Isabel S.; Tenreiro Machado, J. A.; Ferreira, José Rui; Carvalho, J. L. Martins deThis paper presents a review of the state of the art on Intelligent Transportation Sytems. ITS involves a large number of research areas and, therefore, this paper focus on those we believe to be the most relevant. The main purpose is to study the achievements attained in the last years and to give an overview of possible directions towards future research.
- Fractional-order dynamics in the trajectory control of redundant manipulatorsPublication . Duarte, Fernando B. M.; Tenreiro Machado, J. A.Redundant manipulators have som advantages when compared with classical arms because they allow the trajectory optimization, both on the free space and the presence of obstacles, and the resolution of singularities. For this type of arms the proposed kinematic control algorithms adopt generalized inverse matrices but, in general, the corresponding trajectory planning schemes show important limitations. Motivated by these problems this paper studies the chaos revelead by the pseudoinverse-based trajectroy planning algorithms, using the theory of fractional claculus.