Realization of high-energy efficient pick-and-place tasks of SCARA robots by resonance

This paper proposes an energy efficient method for pick and place tasks of SCARA robots. In the proposed method, an adaptive elastic device at each joint of a robot is effectively utilized to reduce the total energy of pick and place tasks. For practical pick and place tasks, start/end points must be changed depending on the required task. In the previous works related to adaptive elastic device for energy saving, it is not clear how to change the start/end points. In this paper, a method to change positions of start/end points of pick and place tasks is proposed. The energy efficient performance of the method is demonstrated by the experiments, in which a SCARA robot with an air cylinder and a vacuum pad is used for the pick and place task of chocolate plates.