An exoskeleton is an external structural mechanism with
joints and links corresponding to those of the human body
[1]. Their main use is to assist the wearer by boosting
their strength and endurance for different purposes, such as
military, medical or civilian use.
It is a common practice in laboratory that the exoskeleton’s
wearer controls the system by indirect measures, such as
electromyography (EMG) [2][3][4][5] or force/torque measurement
generated from interaction [6][7]. This means that
the wearer does not directly control the exoskeleton with a
joystick as common cases for robots or mechanical systems.
The reason behind is that the hands and in some cases the full
body of the wearer are expected to be free. In this context,
the ideal exoskeleton should be able to infer the intention
of the user by indirect and reliable measures in which the