“…In recent years, Unmanned Aerial Vehicle (UAV) with a variety of devices has been widely used in military and civil fields, for instance, aerial photography, agriculture, disaster assistance, surveillance, and transmission line inspection, benefiting from rapid maneuverability, vertical take-off and landing (VTOL), and hovering capacity. 1–5 Especially, being a unique UAV equipped with robotic manipulators, Unmanned Aerial manipulator (UAM) has more satisfying maneuverability and more abundant operational space than mobile manipulators, and can substitute labor operation for dangerous circumstances. 6…”