KRD - Cinemàtica i Disseny de Robots
El grup estudia el comportament dels mecanismes articulats i la planificació, simulació i el control eficient i segur dels moviments d'aquests sistemes. Tots aquests aspectes són esencials per poder desenvolupar els robots cada vegada més complexos d'avui en dia, que s'han de dissenyar de forma que operin en els espais de treball pre-establerts, que han de manipular objectes de forma destra i que han d'evitar en tot moment les configuracions singulars i les col·lisions amb l'entorn.
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Articles de revista [20]
Recent Submissions
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Visually-guided robot navigation: from artificial to natural landmarks
(2007)
Conference report
Open AccessLandmark-based navigation in unknown unstructured environments is far from solved. The bottleneck nowadays seems to be the fast detection of reliable visual references in the image stream as the robot moves. In our research, ... -
Natural landmark detection for visually-guided robot navigation
(2007)
Conference report
Open AccessThe main difficulty to attain fully autonomous robot navigation outdoors is the fast detection of reliable visual references, and their subsequent characterization as landmarks for immediate and unambiguous recognition. ... -
Exploiting single-cycle symmetries in branch-and-prune algorithms
(2007)
Conference report
Open AccessAs a first attempt to exploit symmetries in continuous constraint problems, we focus on permutations of the variables consisting of one single cycle. We propose a procedure that takes advantage of these symmetries by ... -
Online reinforcement learning using a probability density estimation
(The MIT Press. Massachusetts Institute of Technology, 2017-01-01)
Article
Open AccessFunction approximation in online, incremental, reinforcement learning needs to deal with two fundamental problems: biased sampling and nonstationarity. In this kind of task, biased sampling occurs because samples are ... -
Using a new high-throughput video-tracking platform to assess behavioural changes in Daphnia magna exposed to neuro-active drugs
(Elsevier, 2019-04-20)
Article
Open AccessOne of the major challenges that faces today regulatory risk assessment is to speed up the way of assessing threshold sublethal detrimental effects of existing and new chemical products. Recently advances in imaging allows ... -
Solution intervals for variables in spatial RCRCR linkages
(2019-03-01)
Article
Open AccessAn analytic method to compute the solution intervals for the input variables of spatial RCRCR linkages and their inversions is presented. The input-output equation is formulated as the intersection of a single ellipse with ... -
Singularity-free computation of quaternions from rotation matrices in E4 and E3
(2018)
Conference report
Open AccessA real orthogonal matrix representing a rotation in E4 can be decomposed into the commutative product of a left-isoclinic and a right-isoclinic rotation matrix. The double quaternion representation of rotations in E4 follows ... -
A randomized kinodynamic planner for closed-chain robotic systems
(2019)
External research report
Open AccessKinodynamic RRT planners are effective tools for finding feasible trajectories in many classes of robotic systems. However, they are hard to apply to systems with closed-kinematic chains, like parallel robots, cooperating ... -
Further characterization of the zebrafish model of acrylamide acute neurotoxicity: gait abnormalities and oxidative stress
(Nature, 2019-05-08)
Article
Open AccessOccupational, accidental, or suicidal exposure to acrylamide (ACR) may result in a neurotoxic syndrome. Development of animal models of acrylamide neurotoxicity is necessary for increasing our mechanistic understanding of ... -
A fast branch-and-prune algorithm for the position analysis of spherical mechanisms
(Springer, 2019)
Conference report
Open AccessDifferent branch-and-prune schemes can be found in the literature for numerically solving the position analysis of spherical mechanisms. For the prune operation, they all rely on the propagation of motion intervals. They ... -
On Cayley's factorization with an application to the orthonormalization of noisy rotation matrices
(2019-05-09)
Article
Open AccessA real orthogonal matrix representing a rotation in four dimensions can be decomposed into the commutative product of a left- and a right-isoclinic rotation matrix. This operation, known as Cayley's factorization, directly ... -
A survey on the computation of quaternions from rotation matrices
(ASME PRESS, 2019-04-01)
Article
Open AccessThe parameterization of rotations is a central topic in many theoretical and applied fields such as rigid body mechanics, multibody dynamics, robotics, spacecraft attitude dynamics, navigation, 3D image processing, computer ...
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