Results 21 to 30 of about 3,227 (267)
A Metaheuristic Optimization Approach for Trajectory Tracking of Robot Manipulators
Mathematics, 2022 Due to the complexity of manipulator robots, the trajectory tracking task is very challenging. Most of the current algorithms depend on the robot structure or its number of degrees of freedom (DOF).
Carlos Lopez-Franco +4 more
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Mirror symmetries for brane configurations and branes at singularities [PDF]
Nuclear Physics B, 2000 We study local mirror symmetry on non-compact Calabi-Yau manifolds (conifold type of singularities) in the presence of D3 brane probes. Using an intermediate brane setup of NS 5-branes `probed' by D4 resp. D5 branes, we can explicitly T-dualize three isometry directions to relate a non-compact Calabi-Yau manifold to its local mirror.
Aganagic, Mina +3 more
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DISCONNECTED REGIONS OF STABLE CIRCULAR ORBITS IN PRESENCE OF MASSIVE SCALAR FIELD
Odessa Astronomical Publications, 2017 We study circular orbits around a static spherically symmetric configuration of General Relativity in presence of a nonlinear massive scalar field (SF). The problem deals with a family of solutions to Einstein – SF equations with the SF potentials that are
O. S. Stashko, V. I. Zhdanov
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Q_l-cohomology projective planes and singular Enriques surfaces in characteristic two [PDF]
Épijournal de Géométrie Algébrique, 2019 We classify singular Enriques surfaces in characteristic two supporting a rank nine configuration of smooth rational curves. They come in one-dimensional families defined over the prime field, paralleling the situation in other characteristics, but ...
Matthias Schütt
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IEEE Access, 2020 This paper proposes an efficient and accuracy inverse kinematic algorithm for 7-DOF redundant manipulators with obstacles avoidance and singularities avoidance based on the hybrid of analytical and numerical method (IK-HAN).
Minghe Jin +3 more
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Formulation of Shell Elements Based on the Motion Formalism
Applied Mechanics, 2021 This paper presents a finite element implementation of plates and shells for the analysis of flexible multibody systems. The developments are set within the framework of the motion formalism that (1) uses configuration and motion to describe the ...
Olivier Bauchau, Valentin Sonneville
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Generic singular configurations of linkages
Topology and its Applications, 2012 We study the topological and differentiable singularities of the configuration space C(Γ) of a mechanical linkage Γin d-dimensional Euclidean space, defining an inductive sufficient condition to determine when a configuration is singular. We show that this condition holds for generic singularities, provide a mechanical interpretation, and give an ...
Blanc, David, Shvalb, Nir
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Robotics, 2022 Improving the strategies employed to control robotic arms is of great importance because of the increase in their use in advanced supervisory control strategies, such as digital twins.
Jessica Villalobos +2 more
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Frontiers in Physics, 2022 Atomic gases tightly trapped near the focus of an electromagnetic wave interact with photons that exhibit a complex structure, displaying strong gradients of field amplitude and local polarization that can lead to topological phase singularities.
R. Gutiérrez-Jáuregui, R. Jáuregui
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Configuring Polarization Singularity Array Composed of C-Point Pairs
IEEE Photonics Journal, 2022 The generation and topological configuration of double-layered polarization singularity array (PSA) having paired C-points of opposite topological index through superposing three Laguerre-Gaussian (LG) component beams with orthogonal linear polarization ...
Xinglin Wang +8 more
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