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Double active universal joint (DAUJ): robotic joint mechanism for human-like motions

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2 Author(s)
Sungmoo Ryew ; Sch. of Mech. Eng., Sung Kyun Kwan Univ., Suwon, South Korea ; Hyoukryeol Choi

We present a robotic joint mechanism that makes it possible to mimic the human-like motions. The proposed robotic joint, called the double active universal joint (DAUJ), generates a two-degree of freedom motion suppressing rolling by the coupled motions of two independent motors. The mechanism design and kinematics are mentioned. Two application examples are outlined: an anthropomorphic finger and an in-pipe inspection robot. The results of basic experiments are reported to confirm the effectiveness of the proposed mechanism. Also, we briefly introduce the advantage that the compliance of the proposed mechanism can be easily controlled by modulating the engagement period of the magnetic clutch

Published in:

IEEE Transactions on Robotics and Automation  (Volume:17 ,  Issue: 3 )