Tetrahedral Mobile Robot with Spherical Omnidirectional Wheel
Kenjiro Tadakuma*, Riichiro Tadakuma**, and Jose Berengueres***
*Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 USA
**ISRI/AIST-CNRS Joint Japanese-French Robotics Laboratory, Intelligent Systems Research Institute, National Institute of Advanced Industrial Science and Technology, AIST Tsukuba Central 2, Tsukuba 305-8568, Japan
***Compact Muon Solenoid Experiment, CERN, CERN 40 2-B28, CH-1211, Genève 23, Switzerland
In this paper, a mobile robot with a tetrahedral shape for its basic structure is presented as a thrown robot for search and rescue robot application. The Tetrahedral Mobile Robot has its body in the center of the whole structure. The driving parts that produce the propelling force are located at each corner. As a driving wheel mechanism, we have developed the “Omni-Ball” with one active and two passive rotational axes, which is explained in detail. An actual prototype model has been developed to illustrate the concept and to perform preliminary motion experiments, through which the basic performance of the Tetrahedral Mobile Robot was confirmed.
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