Development of robotic system without wired connections at joints by wireless communication and wireless power transfer
Kazunobu Serizawa, Satoru Shimizu, Hiroo Sekiya, and Masataka Ohira
2022 IEEE 33rd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), pp.01-07, Sept., 2022. [pdf document]

<Abstract>

We propose a new “wire-free robotic system” applicable to an articulated robot that realizes both control and power lines wirelessly at the same time in the joints. The wire-free robotic system consists of a wireless communication system, a wireless power transfer system, and a robot operation system. Control lines are realized by wireless communication in the 60 GHz band with selection-based transmission site diversity. Power lines are realized by wireless power transfer of the magnetic resonance method with load-independence. We developed a prototype robot and verified the communication quality and the operation. It is confirmed that the prototype robot can achieve more than 99% of packet delivery ratio in almost all operating areas. It is also confirmed that the prototype can be controlled and powered wirelessly.