This paper investigates human-robot cooperative
swinging of a complex pendulum-like object. The complexity
of the object results in two possible swinging modes. The goal
is to excite one mode such that a desired energy level of
the pendulum is reached while simultaneously damping the
other mode. The energy based control concept relies on the
projection of the complex mechanism onto an abstract simple
pendulum with two-sided actuation. An actively contributing
robot leader and robot follower are implemented. The controller
performance is analyzed through simulations. A virtual reality
experiment shows the transferability of the control approach
to a human interaction partner.
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