نتایج جستجو برای: workspace
تعداد نتایج: 5353 فیلتر نتایج به سال:
Desktop conferencing systems are now shifting from strict view-sharing towards relaxed “what-you-see-iswhat-I-see” interfaces, where distributed participants in a real time session can view different parts of a shared visual workspace. As with strict view-sharing, people using relaxed-WYSIWIS require a sense of workspace awareness—the up-to-the-minute knowledge about another person’s interactio...
Determine an optimal set of design parameter of PR whose DW fits a prescribed workspace as closely as possible is an important and foremost design task before manufacturing. In this paper, an optimal design method of a linear Delta robot (LDR) to obtain the prescribed cuboid dexterous workspace (PCDW) is proposed. The optical algorithms are based on the concept of performance chart. The perform...
Visuo-haptic augmented reality systems enable users to see and touch digital information that is embedded in the real world. Precise colocation of computer graphics and the haptic stylus is necessary to provide a realistic user experience. PHANToM haptic devices are often used in such systems to provide haptic feedback. They consist of two interlinked joints, whose angles define the position of...
Despite major advances in autonomous vehicle technologies, humancontrolled ROVs (remotely-operated vehicles) continue to fill an important role in underwater work. To perform effectively, however, the human operator requires meaningful cues for spatial orientation, good workspace visibility, and tight feedback about manipulator behavior. These needs can be hard to support in actual undersea ope...
This article describes an efficient and effective strategy for limiting the workspace of a six degrees of freedom parallel manipulator, with challenging motion smoothness requirements due to both the high inertia objects carried by the end effector and the pose references coming from a force feedback loop. Firstly, a suitable formulation of the workspace is studied, distinguishing between diffe...
We discuss the determination of workspaces of discretely ac-tuated manipulators using convolution of real-valued functions on the Special Euclidean Group. Each workspace is described in terms of a density function that provides for any unit taskspace volume of the workspace the number of reachable frames therein. A manipulator consisting of n discrete actuators each with K states can reach K n ...
Shared workspace systems provide virtual places for self-organized and semi-structured cooperation between local and distributed users. These systems are adopted by a large community over the past years and the volume of information managed by these systems is expanding rapidly. A problem that occurs frequently using these systems is the missing user support for the workspace organization and a...
BACKGROUND In clinical evaluation of upper extremity, there is a lack of assessment methods that are quantitative, reliable, and informative of the overall functional capability of an individual. OBJECTIVE We present new methodology for the assessment of upper extremity impairments based on the concept of 3-dimensional reachable workspace using Microsoft Kinect. METHODS We quantify the reac...
The kinematic sensitivity has been recently proposed as a unit-consistent performance index to circumvent several shortcomings of some notorious indices such as dexterity. This paper presents a systematic interval approach for computing an index by which two important kinematic properties, namely feasible workspace and kinematic sensitivity, are blended into each other. The proposed index may b...
Experiments in Surface Perception using a Fingertip Haptic Display by Steven Craig Venema Chairperson of Supervisory Committee: Professor Blake Hannaford Department of Electrical Engineering A haptic display provides the mechanical analog of a physical environment for our sense of touch in a virtual reality (VR) simulation system. In this dissertation, we explore the design and implementation o...
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