Safe strategy of door opening with impendance controlled manipulator

Modern robotic systems are able to localize doors and its handle or knob, grasp the handle and open the door. Service robots need to open doors and drawers to autonomously operate in human environment. The mechanical properties of doors lead to incorporation of force and velocity constraints into the control law, to avoid the environment damage. In the article the impedance control law was expanded with these factors to achieve safe behavior of direct (explicit) position-force controller of KUKA LWR4+ robot that opens the door.