نتایج جستجو برای: boundary of workspace
تعداد نتایج: 21184292 فیلتر نتایج به سال:
We present a perception system, called Artisan, that semi-automatically builds 3-D models of a robot’s workspace. Range images are acquired with a scanning laser rangefinder and then processed, based on a systematic sensor characterization, to remove noise and artifacts. Complex 3-D objects represented as surface meshes are subsequently recognized in the range images and inserted into a virtual...
One of the weak aspects of the parallel robots is ratio between the workspace and the dimension of the mechanical structure, if compared with the serial one. Hence the shape of the workspace of a parallel manipulator is one of the most important aspects to reflect its working capacity. This paper introduces two innovative methods to analyze the workspace of some family of parallel robots, with ...
We propose a novel low-cost method for quantitative assessment of upper extremity workspace envelope using Microsoft Kinect camera. In clinical environment there are currently no practical and cost-effective methods available to provide arm-function evaluation in three-dimensional space. In this paper we examine the accuracy of the proposed technique for workspace estimation using Kinect in com...
In this paper, we investigate the multi-goal path planning problem to find shortest collision-free connecting a given set of goal points located in robot working environment. This combines two sub-problems: first, optimize sequence free workspace; second, compute between points. study, genetic algorithm is used that should visit. Once available, our developed method called Boundary Node Method ...
This paper presents a novel and exible architecture to support the collaboration paradigm for asynchronous sharing of computer-supported workspaces, or simply replayable workspaces. Such workspace, however, may be composed of multiple, interacting, tools. Through the capture, re-execution, and manipulation of a session with an interactive computer-supported workspace, it is possible to reuse th...
A neural network solution is proposed for solving path planning problems faced by mobile robots. The proposed network is a two-dimensional sheet of neurons forming a distributed representation of the robot's workspace. Lateral interconnections between neurons are "cooperative", so that the network exhibits oscillatory behaviour. These oscillations are used to generate solutions of Bellman's dyn...
Effortful cognitive performance is theoretically expected to depend on the formation of a global neuronal workspace. We tested specific predictions of workspace theory, using graph theoretical measures of network topology and physical distance of synchronization, in magnetoencephalographic data recorded from healthy adult volunteers (N = 13) during performance of a working memory task at severa...
It has been suggested that the learning of new dynamics occurs in intrinsic coordinates. However, it has also been suggested that elements that encode hand velocity, and hence act in an extrinsic frame of reference, play a role in the acquisition of dynamics. To reconcile claims regarding the coordinate system involved in the representation of dynamics, we have used a procedure involving the tr...
Parallel manipulators are an interesting alternative to serial robots given the important mechanical and kinematic advantages offered. Nevertheless, they often present more complex and smaller workspaces with internal singularities (Altuzarra et al., 2004; Gosselin & Angeles, 1990). Thus, the workspace size, shape and quality are considered some of the main design criteria of these robots (Merl...
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