Cuspidal and Noncuspidal Robot Manipulators

Details Cuspidal and Noncuspidal Robot Manipulators Cuspidal and Noncuspidal Robot Manipulators

2010-02-09

arxiv.org/abs/1002.1773v1

Robotica 25, 6 (2007) 717-724

Computer Science

Robotics

Scientific paper

This article synthezises the most important results on the kinematics of cuspidal manipulators i.e. nonredundant manipulators that can change posture without meeting a singularity. The characteristic surfaces, the uniqueness domains and the regions of feasible paths in the workspace are defined. Then, several sufficient geometric conditions for a manipulator to be noncuspidal are enumerated and a general necessary and sufficient condition for a manipulator to be cuspidal is provided. An explicit DH-parameter-based condition for an orthogonal manipulator to be cuspidal is derived. The full classification of 3R orthogonal manipulators is provided and all types of cuspidal and noncuspidal orthogonal manipulators are enumerated. Finally, some facts about cuspidal and noncuspidal 6R manipulators are reported.

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