Trajectory tracking control redundant manipulators based on avoidance manipulability

Abstract

This paper is concerned with trajectory tracking and obstacle avoidance control using avoidance manipulability of redundant manipulators. In our previous research, we proposed a robot control system to deal with an unknown object by combining an avoidance control system and preview control system. However, through the simulation studies, it became clear that the shape of a redundant manipulator was not always kept to the best configuration on the view point of the avoidance ability. In this presentation we define an evaluation method of the ability to avoid an obstacle while tracking the desired trajectory by evaluating the whole shape of the redundant manipulator. Finally, we suggest a control system with which the manipulator can maintain high avoidance ability.