STOCK MARKET BSE NSE

Robot That Can Manipulate its Grip

A new robotic model developed by scientists, including an Indian-origin engineering student, can adjust its grip on objects.

Published: 05th August 2015 02:32 PM  |   Last Updated: 05th August 2015 02:42 PM   |  A+A-

By IANS

NEW YORK: A new robotic model developed by scientists, including an Indian-origin engineering student, can adjust its grip on objects.

For example, if a robotic gripper aims to pick up a pencil at its midpoint, but instead grabs hold of the eraser end, it could use the environment to adjust its grasp.

Instead of releasing the pencil and trying again, the new model enables a robot to loosen its grip slightly, and push the pencil against a nearby wall -- just enough to slide the robot's gripper closer to the pencil's midpoint.

The model developed by a team led by Alberto Rodriguez, an assistant professor of mechanical engineering at Massachusetts Institute of Technology (MIT), and graduate student Nikhil Chavan-Dafle, predicts the force with which a robotic gripper needs to push against various fixtures in the environment in order to adjust its grasp on an object.

Partnering robots with the environment to improve dexterity is an approach Rodriguez calls "extrinsic dexterity" -- as opposed to the intrinsic dexterity of, say, the human hand.

To adjust one's grip on a pencil in a similar fashion, a person, using one hand, could simply spider-crawl his fingers towards the centre of the pencil.

But programming such intrinsic dexterity in a robotic hand is extremely tricky, significantly raising a robot's cost.

With Rodriguez's new approach, existing robots in manufacturing, medicine, disaster response, and other gripper-based applications may interact with the environment, in a cost-effective manner, to perform more complex manoeuvres.

"Chasing the human hand is still a very valid direction in robotics. But if you cannot afford having a $100,000 hand that is very complex to use, this method brings some dexterity to very simple grippers," said Rodriguez.

The new approach will be detailed in September at the international conference on Intelligent Robotics and Systems.



Comments

Disclaimer : We respect your thoughts and views! But we need to be judicious while moderating your comments. All the comments will be moderated by the newindianexpress.com editorial. Abstain from posting comments that are obscene, defamatory or inflammatory, and do not indulge in personal attacks. Try to avoid outside hyperlinks inside the comment. Help us delete comments that do not follow these guidelines.

The views expressed in comments published on newindianexpress.com are those of the comment writers alone. They do not represent the views or opinions of newindianexpress.com or its staff, nor do they represent the views or opinions of The New Indian Express Group, or any entity of, or affiliated with, The New Indian Express Group. newindianexpress.com reserves the right to take any or all comments down at any time.

flipboard facebook twitter whatsapp