Virginia Tech Mechanical Engineering Annual Report 2018 Annual Report | Page 10

ROBOTIC TAILS “We looked to nature to see how animals used their tails and how their tails are structured,” said Ben-Tzvi. “What we saw was a continuous deformation and hyper-redundant structure, so we’ve been inspired by that, and the research we’ve done has been largely establishing the field of hyper-redundant robotic tails. We are pioneering – exploring the field and establishing it so that we have a baseline for coupled dynamic analysis of legged robots with tails onboard.” The tail needs to be robust and flexible, being able to perform a variety of functions to justify incorporating it into a complex, high-performance mechanism. “The idea is that by generating different spatial motions of the tail, we can apply moments and forces around the base of the tail that will result in moments and forces applied to the robot, which will allow it to change direction or maintain stability. After modeling and establishing the science behind the tails’ potential, the team has come up with new mathematical modeling approaches that are widely applicable for flexible structures beyond tails. Because of their multiple mode shapes, the tails allow for a greater range of freedom than single degree of freedom instruments. “WE ARE PIONEERING” ROBOTIC TAIL - FULL VIEW 8