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Researchers Develop Low-cost Robotic Grasping Hand

April 12, 2023

Researchers at the University of Cambridge have developed a low-cost, energy-efficient robotic hand capable of grasping various objects using passive movement from its wrist and tactile sensors on its ‘skin’. This innovation, published in the journal Advanced Intelligent Systems, addresses the challenges robots face in handling objects of different sizes, shapes, and textures.

Low-cost grasping hand
Low-cost grasping hand (Image credit: University Of Cambridge)

The 3D printed robot hand, designed by Professor Fumiya Iida’s Bio-Inspired Robotics Laboratory, uses a small amount of energy to mimic human hand movements without the need for fully motorized fingers. The hand is implanted with tactile sensors, allowing it to sense the object it’s touching, and can predict whether it will drop objects based on the sensor data.

Successful Trials

Through more than 1200 tests, the robot hand demonstrated its ability to grasp 11 out of 14 objects, including a peach, a computer mouse, and a roll of bubble wrap. The passive design is easier to control, provides a wide range of motion, and simplifies the learning process.

“In earlier experiments, our lab has shown that it’s possible to get a significant range of motion in a robot hand just by moving the wrist,” Dr Thomas George-Thuruthel, co-author of the paper.

“We wanted to see whether a robot hand based on passive movement could not only grasp objects, but would be able to predict whether it was going to drop the objects or not, and adapt accordingly.”

Natural Movement

This breakthrough could pave the way for the development of affordable robotics with natural movement and adaptability. Future expansions could include computer vision capabilities or teaching the robot to exploit its environment for grasping a broader range of objects. The project was funded by UK Research and Innovation (UKRI) and Arm Ltd.

You can find the research paper, titled “Predictive Learning of Error Recovery with a Sensorized Passivity-Based Soft Anthropomorphic Hand” over at this link.

Interview with professor Fumiya Lida

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About the author | Phillip Keane
Phillip is an aerospace engineer from UK. He is a graduate of Coventry University (UK), International Space University (France) and Nanyang Technological University (Singapore), where he studied Advanced Manufacturing at the Singapore Centre for 3D Printing.
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