BackIIT Madras develops multimodal robot with human-like grasp
The new class of robot developed has various industrial applicationsMachines used in search-and-rescue operations and locomotory applications will benefit from this robotic platform
PremiumBengaluru: Indian Institute of Technology Madras (IIT-Madras) researchers have developed a multimodal robotic system with good grasping, manipulation and locomotion abilities for use in industrial and field applications. Called ‘GraspMan,’ the system comprises a pair of graspers that are capable of holding objects securely and manipulate it much like the human hand.
A prototype of the grasper has been fabricated at the Robotics Laboratory, Department of Engineering Design, IIT Madras, and the experimental results confirm manipulation capabilities of the robot, IIT-Madras said in a statement on Wednesday. Two such graspers, equipped with the robotic platform provides behavioural adaptation, which is the capability to change the locomotion behaviour to adapt to the environment.
The research is being led by Prof Asokan Thondiyath, Robotics Laboratory, Department of Engineering Design, IIT Madras with his student and Research Scholar Mr. Nagamanikandan Govindan. Their recent development has been published in ASME’s reputed peer-reviewed Journal of Mechanisms and Robotics.
According to Prof. Thondiyath, “The motivation behind this research is to realize a robot with a minimalistic design that can overcome the need for task-specific robots that are capable of navigating and manipulating across different environments without increasing the system complexity."
This new class of robot developed by the IIT Madras team has various industrial applications such as pipe climbing and inspection, which involves climbing, holding and assembling, all of which are possible in their design, according to the institute. Machines used in search-and-rescue operations and locomotory applications will also benefit from this robotic platform.
The robotic platform developed by Prof. Asokan Thondiyath and his research scholar Mr. Nagamanikandan Govindan features a multipurpose grasper that is designed to perform complex manipulation and locomotion tasks, without the need for dedicated motors for manipulation, locomotion, and grasping.
Robotic hands must have the capabilities of human hands or be able to emulate common hand poses in order to accomplish stable grasping and dexterous in-hand manipulation of objects. A robotic grasper, the machine-equivalent of the human hand, must be able to handle a wide range of objects of varying shapes, adjust force at the points of contact with the objects, and slide/rotate an object within-hand, without great complexity of design.
Highlighting the unique points of their research, Govindan said, “Our recent publication provides details of the kinematic and static analysis and experiments on the fabricated prototype to validate the different modes of operation. The combination of locomotion and manipulation gives the robot interesting features such as corbiculation (holding an object and walking), non-anthropomorphic walking and brachiation (arm swinging like Baboons)."
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