Omnidirectional Tractable Three Module Robot

Kartik Suryavanshi1    Rama Vadapalli1    Ruchitha Vucha1    Abhishek Sarkar1    K. Madhava Krishna1   

1 IIIT Hyderabad, India   

This paper introduces the Omnidirectional Tractable Three Module Robot for traversing inside complex pipe networks. The robot consists of three omnidirectional modules fixed 120° apart circumferentially which can rotate about their own axis allowing holonomic motion of the robot. The holonomic motion enables the robot to overcome motion singularity when negotiating T-junctions and further allows the robot to arrive in a preferred orientation while taking turns inside a pipe. We have developed a closed-form kinematic model for the robot in the paper and propose the ‘Motion Singularity Region’ that the robot needs to avoid while negotiating Tjunction. The design and motion capabilities of the robot are demonstrated both by conducting simulations in MSC ADAMS on a simplified lumped-model of the robot and with experiments on its physical embodiment.