General translational assembly planning
نویسندگان
چکیده
General Translational Assembly Planning Achim Schweikard, Fabian Schwarzer Informatik Technische Universit at M unchen, 80290 M unchen [email protected] Abstract: An exact and practical method for translational motion planning with many degrees of freedom is derived. It is shown that certain D dimensional arrangements of hyperplanes can be searched in the following way: only a single connected component is traversed during the search, and the arrangement is searched as an arrangement of surface patches rather than full hyperplanes. This reduction in search e ort allows for polynomial time bounds in appropriate cases. Heuristic and randomized planners cannot return an information about infeasibility of planning problems. The new method is exact and complete. Experiments obtained with an implementation suggest that it is capable of reaching the performance of the most advanced random planning schemes. In addition, insolvability can be established in practical cases.
منابع مشابه
Efficient Linear Unboundedness Testing: Algorithm and Applications to Translational Assembly Planning
We address the problem of efficiently testing for linear unboundedness and its applications to translational assembly planning. We describe a new algorithm that performs the test by solving a single homogeneous system of equations followed by a single linear feasibility test. We show that testing for unboundedness is computationally at least as hard as these two subproblems. The new algorithm i...
متن کاملC-space Cell Defragmentation for General Translational Assembly Planning
We present an exact and practical incremental method for general translational assembly planning. In practical cases, an exact and complete representation of the relevant free regions in the highdimensional assembly configuration space becomes amenable by incrementally computing an arrangement of cells in d-dimensional space. Here we introduce a novel reduction scheme, D–node reduction, that al...
متن کاملYaron Ostrovsky - Berman and Leo Joskowicz Relative Position Computation for Assembly Planning With Planar Toleranced Parts
In this paper we present a new framework for worst-case toleranced assembly planning of planar mechanical systems. Unlike most assembly planners, which produce plans for nominal parts, our framework incorporates the inherent imprecision of the manufacturing process, which introduces uncertainties in the shape and size of the assembly parts. It accounts for the uncertainty of the relative part p...
متن کاملRelative Position Computation for Assembly Planning With Planar Toleranced Parts
This paper presents a new framework for worst-case toleranced assembly planning of planar mechanical systems. Unlike most assembly planners, which produce plans for nominal parts, our framework incorporates the inherent imprecision of the manufacturing process, which introduces uncertainties in the shape and size of the assembly parts. It accounts for the uncertainty of the relative part placem...
متن کاملEmbedding rotations in translational configuration space
This paper presents the graphical embeding of the rotational degree of freedom into the translational Configuration Space for planar assembly tasks. The resulting representation helps the visualization and understanding of motions in a simple and easy graphical way. The aim is the developing of motion planning algorithms in a two-dimensional parametrized space for planar assembly tasks (3 d.o.f...
متن کامل