Working and Assembly Modes of the Agile Eye

Details Working and Assembly Modes of the Agile Eye Working and Assembly Modes of the Agile Eye

2007-08-29

arxiv.org/abs/0708.3936v1

Dans International Conference On Robotics And Automation - IEEE International Conference On Robotics And Automation, Orlando :

Computer Science

Robotics

Scientific paper

This paper deals with the in-depth kinematic analysis of a special spherical parallel wrist, called the Agile Eye. The Agile Eye is a three-legged spherical parallel robot with revolute joints in which all pairs of adjacent joint axes are orthogonal. Its most peculiar feature, demonstrated in this paper for the first time, is that its (orientation) workspace is unlimited and flawed only by six singularity curves (rather than surfaces). Furthermore, these curves correspond to self-motions of the mobile platform. This paper also demonstrates that, unlike for any other such complex spatial robots, the four solutions to the direct kinematics of the Agile Eye (assembly modes) have a simple geometric relationship with the eight solutions to the inverse kinematics (working modes).

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