'Ambidextrous' robots could dramatically speed e-commerce

'Ambidextrous' robots could dramatically speed e-commerce
A new "ambidextrous" approach allows robots to grasp a diverse range of objects without training. Credit: Adriel Olmos

E-commerce continues to expand and achieved new levels during the recent holiday season. To rapidly fulfill the enormous volume and variety of orders, companies such as Amazon, Walmart, and Alibaba are investing heavily in new warehouses. To address the shortage of workers, many companies are considering robots. However, reliably grasping a diverse range of products remains a Grand Challenge for robotics.

In a paper published Wednesday, Jan. 16, in Science Robotics, engineers at the University of California, Berkeley present a novel, "ambidextrous" approach to grasping a diverse range of object shapes without training.

"Any single cannot handle all objects," said Jeff Mahler, a postdoctoral researcher at UC Berkeley and lead author of the paper. "For example, a cannot create a seal on porous objects such as clothing and parallel-jaw grippers may not be able to reach both sides of some tools and toys."

Mahler works in the lab of Ken Goldberg, a UC Berkeley professor with joint appointments in the Department of Electrical Engineering and Computer Sciences and the Department of Industrial Engineering and Operations Research.

The used in most fulfillment centers rely on suction grippers which can limit the range of objects they can grasp. The UC Berkeley paper introduces an "ambidextrous" approach that is compatible with a variety of gripper types. The approach is based on a common "reward function" for each gripper type that quantifies the probability that each gripper will succeed. This allows the system to rapidly decide which gripper to use for each situation. To effectively compute a reward function for each gripper type, the paper describes a process for learning reward functions by training on large synthetic datasets rapidly generated using structured domain randomization and analytic models of sensors and the physics and geometry of each gripper.

A new "ambidextrous" approach allows robots to grasp a diverse range of object shapes without training. Credit: Adriel Olmos

When the researchers trained reward functions for a parallel-jaw gripper and a suction cup gripper on a two-armed robot, they found that their system cleared bins with up to 25 previously unseen objects at a rate of over 300 picks per hour with 95 percent reliability.

"When you are in a warehouse putting together packages for delivery, objects vary considerably," said Goldberg. "We need a variety of grippers to handle a variety of objects."

'Ambidextrous' robots could dramatically speed e-commerce
Setup of the two-armed ambidextrous robot and the objects that it attempted to grasp, categorized into two difficulty levels. Credit: Mahler et al., Sci. Robot. 4, eaau4984 (2019)

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More information: J. Mahler el al., "Learning ambidextrous robot grasping policies," Science Robotics (2018). robotics.sciencemag.org/lookup … /scirobotics.aau4984
Journal information: Science Robotics

Citation: 'Ambidextrous' robots could dramatically speed e-commerce (2019, January 16) retrieved 23 September 2019 from https://techxplore.com/news/2019-01-ambidextrous-robots-e-commerce.html
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Jan 16, 2019
It is tough to increase performance of Robots anymore for the present. Rather, it may be easier to create sparrows of Ostrich Size. The Birds lay eggs and hence their zygotes can be manipulated outside their bodies. That can then be extrapolated to Chicken, Salmon etc., And even for reduction of sizes of Elephants to rear them as pets in the backyards !

Jan 16, 2019
It is tough to increase performance of Robots anymore for the present. Rather, it may be easier to create sparrows of Ostrich Size. The Birds lay eggs and hence their zygotes can be manipulated outside their bodies. That can then be extrapolated to Chicken, Salmon etc., And even for reduction of sizes of Elephants to rear them as pets in the backyards !

Chicken Hatches Outside the Shell
https://www.youtu...BxYDNz_Y

Jan 16, 2019
It is tough to increase performance of Robots anymore for the present. Rather, it may be easier to create sparrows of Ostrich Size. The Birds lay eggs and hence their zygotes can be manipulated outside their bodies. That can then be extrapolated to Chicken, Salmon etc., And even for reduction of sizes of Elephants to rear them as pets in the backyards !

https://www.youtu...uKvUbcfw
Chicken Hatches Outside the Shell
https://www.youtu...BxYDNz_Y

Jan 17, 2019
It is tough to increase performance of Robots anymore for the present. Rather, it may be easier to create sparrows of Ostrich Size. The Birds lay eggs and hence their zygotes can be manipulated outside their bodies. That can then be extrapolated to Chicken, Salmon etc., And even for reduction of sizes of Elephants to rear them as pets in the backyards !

https://medicalxp...ral.html

Jan 17, 2019
It is tough to increase performance of Robots anymore for the present. Rather, it may be easier to create sparrows of Ostrich Size. The Birds lay eggs and hence their zygotes can be manipulated outside their bodies. That can then be extrapolated to Chicken, Salmon etc., And even for reduction of sizes of Elephants to rear them as pets in the backyards !

https://phys.org/...ort.html
Chicken Hatches Outside the Shell
https://www.youtu...BxYDNz_Y

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