A dual-motor robot joint mechanism with epicyclic gear train

This paper presents the concept of a new robotic joint composed of two electric motors as inputs, an epicyclic gearing system for the transmission, and a single output. The proposed joint mechanism has a wider range of speed and torque performances comparatively to a traditional robot joint using a single motor and gearbox. The dynamic equations for the mechanical transmission system are given and a dual-motor joint mechanism is designed and prototyped to test this new concept of robotic joint. Also, the potential advantages of this joint concept for the design of manipulators for which a wide range of performances are desired are discussed. This work is motivated by the development of field robots designed for the operation and maintenance tasks in power distribution lines.

[1]  Clément Gosselin,et al.  KINEMATIC OPTIMIZATION OF A ROBOTIC JOINT WITH CONTINUOUSLY VARIABLE TRANSMISSION RATIO , 2011 .

[2]  Jae-Bok Song,et al.  Double Actuator Unit with Planetary Gear Train for a Safe Manipulator , 2007, Proceedings 2007 IEEE International Conference on Robotics and Automation.

[3]  Tomasz Rybus,et al.  OPTIMIZATION OF THE ROBOTIC JOINT EQUIPPED WITH EPICYLOIDAL GEAR AND DIRECT DRIVE FOR SPACE APPLICATIONS , 2013 .

[4]  Youngjin Choi,et al.  A New Actuator System Using Dual-Motors and a Planetary Gear , 2012, IEEE/ASME Transactions on Mechatronics.

[5]  J.-F. Allan,et al.  Field tests of a robot system prototype for the underground distribution lines , 2010, IEEE PES T&D 2010.

[6]  Aaas News,et al.  Book Reviews , 1893, Buffalo Medical and Surgical Journal.

[7]  Tsukasa Ogasawara,et al.  Development of a human symbiotic assist arm PAS-Arm : Design of CVT , 2009, RO-MAN 2009 - The 18th IEEE International Symposium on Robot and Human Interactive Communication.

[8]  David H. Myszka,et al.  Machines and Mechanisms: Applied Kinematic Analysis , 1998 .

[9]  Dinesh Rabindran,et al.  Power Flow Analysis in Parallel Force/Velocity Actuators (PFVA): Theory and Simulations , 2008 .

[10]  Kwanghee Nam,et al.  A dynamic decoupling control scheme for high-speed operation of induction motors , 1999, IEEE Trans. Ind. Electron..

[11]  Seung Hwan Lim,et al.  Modular joint unit design for arm exoskeleton robot , 2012, 2012 9th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI).

[12]  Neil Genzlinger.  A. and Q , 2006 .

[13]  Qiang Huang,et al.  A dual-motor joint model for humanoid robots , 2013, 2013 25th Chinese Control and Decision Conference (CCDC).