Results 31 to 40 of about 167,464,841 (288)

An Efficient and Accurate Inverse Kinematics for 7-DOF Redundant Manipulators Based on a Hybrid of Analytical and Numerical Method

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, Qiang Liu, Bin Wang, Hong Liu   +3 more
doaj   +1 more source

On the classification of rational surface singularities

, 2012
A general strategy is given for the classification of graphs of rational surface singularities. For each maximal rational double point configuration we investigate the possible multiplicities in the fundamental cycle. We classify completely certain types
Stevens, Jan, Jan Stevens, Stevens, Jan,
core   +1 more source

(Revised) The numerical solution of elliptic and parabolic partial differential equations with boundary singularities [PDF]

, 1977
A general numerical method is described for the solution of linear elliptic and parabolic partial differential equations in the presence of boundary singularities.
Furzeland, RM, Crank, J
core   +5 more sources

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
doaj   +1 more source

Simple curve singularities

, 2015
In this paper we classify simple parametrisations of complex curve singularities of arbitrary embedding dimension. Simple means that all neighbouring singularities fall in finitely many equivalence classes.
Stevens, Jan, Stevens, Jan,
core   +1 more source

On the topology of a resolution of isolated singularities

, 2017
et Y be a complex projective variety of dimension n with isolated singularities, \pi:X->Y a resolution of singularities, G the exceptional locus.
Franco, Davide, DI GENNARO, VINCENZO, Franco Davide, Digennaro, Vincenzo, DI GENNARO, V, Vincenzo Di Gennaro, Davide Franco, Franco, D   +7 more
core   +1 more source

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
openaire   +2 more sources

Kulikov singularities

, 2018
In the study of normal surface singularities the relation between analytical and topological properties and invariants of the singularity is a very rich problem.
Stevens, Jan, Stevens, Jan,
core   +1 more source

Singularity Analysis and Complete Methods to Compute the Inverse Kinematics for a 6-DOF UR/TM-Type Robot

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, Irma Y. Sanchez, Fernando Martell   +2 more
doaj   +1 more source

Nonlinear Quantum Optics With Structured Light: Tightly Trapped Atoms in the 3D Focus of Vectorial Waves

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
doaj   +1 more source