Rotary Surface Object Manipulation by Multifingered Robot Hand

Li Q, Haschke R, Ritter H, Bolder B. Rotary Surface Object Manipulation by Multifingered Robot Hand. Presented at the 7th German Conference on Robotics, Munich, Germany.We propose a simple but efficient control strategy to manipulate objects of unknown shape, weight, and friction properties – prerequisites which are necessary for classical offline grasping and manipulation methods. With this strategy, the object can be manipulated in hand in a large scale,(eg. to rotate the object 360 degree) regardless whether there is rolling or sliding motion between the fingertips and object. The proposed control strategy employs estimated contact point locations, which can be obtained from modern tactile sensors with good spatial resolution. The feasibility of the strategy is proven in simulation experiments employing a physics engine providing exact contact information. However, to motivate the applicability in real world scenarios, where only coarse and noisy contact information will be available, we also evaluated the performance of the approach when adding artificial noise