NASA's Super Ball Bot Could Be the Best Design for Planetary Exploration

It’s almost certainly not what you picture when you think of a robot, much less a robot that’s intended to head into space

2 min read
NASA's Super Ball Bot Could Be the Best Design for Planetary Exploration
Image: NASA

NASA’s Super Ball Bot has to be one of the most bizarrely and effectively innovative robot designs we’ve ever come across. It’s a tensegrity structure, nothing more (and nothing less) than a bunch of rods connected by a bunch of cables. It’s almost certainly not what you picture when you think of a robot, much less a robot that’s intended to head into space. At NASA Ames Research Center, they’ve been working on this project through NASA’s Innovative Advanced Concepts (NIAC) program, and we have an update for you about what they’ve been up to.

Here’s a great video where NASA researchers Vytas SunSpiral and Adrian Agogino describe the robot’s potential capabilities:

Video: IEEE Spectrum

And here’s a more recent video with some of their latest experiments.

Video: NASA
The tensegrity robot developed at NASA Ames, with prototypes built by University of Idaho (drop tests) and by Ken Caluwaerts (rolling prototype).

The primary advantage of tensegrity structures is that they are excellent at distributing forces. Since there is no rigid connection between any of the structure elements of the robot, they’re easy to pack, easy to unpack, and extraordinarily resilient to external forces, since any external stress gets absorbed across the entire structure of the robot. This means that you can drastically reduce the mass of the robot and still end up with something strong enough to meet your mission requirements.

Super Ball Bot also features tunable stiffness. By increasing or decreasing the tension on the cable network, the bot can transform from a nearly rigid structure to a squishy and compliant pile of interconnected sticks. Those sticks are the muscles of the robot, containing motors that wind and unwind the cables. And by making the right cables the right lengths at the right times, the sticks can make the robot move.

Saying that it rolls might be a bit optimistic (it “flops,” really), but it can move in any direction, has no problems with rough terrain, and can even make its way up hills. If you do somehow manage to break something on the robot, it can keep itself going even after 75 percent of its actuators are non-functional, or even if a cable snaps.

For the last year or so, NASA has been working on a much larger and more complex version of the robot, called SUPERball. SUPERball has 12 actuators (the final robot will have 24), enough to really explore how to make the robot move effectively. It’s also large enough that a scientific payload can be suspended inside to see how it fares, and modular to be able to test out different structural configurations.

Here’s the latest version of the robot, which will be presented at the IEEE International Conference on Robotics and Automation (ICRA) 2015 in Seattle:

Video: NASA/Vytas SunSpiral
Andrew Sabelhaus, working in conjunction with researchers from  UC Berkeley’s BEST Lab, demonstrate the SUPERball robot.

Long term, a robot like this could be perfect for exploring a place like Titan, Saturn’s largest moon, where the atmosphere and relatively low gravity means that you could drop the robot as-is from orbit without any additional descent paraphernalia and it would make it to the ground completely unscathed.

There are also a few other intriguing ideas, like this:

img

Or how about this:

img

We’re looking forward to learning more about these concepts at ICRA in May.

[ Super Ball Bot ] via [ Being Human ]

The Conversation (0)

How Robots Can Help Us Act and Feel Younger

Toyota’s Gill Pratt on enhancing independence in old age

10 min read
An illustration of a woman making a salad with robotic arms around her holding vegetables and other salad ingredients.
Dan Page
Blue

By 2050, the global population aged 65 or more will be nearly double what it is today. The number of people over the age of 80 will triple, approaching half a billion. Supporting an aging population is a worldwide concern, but this demographic shift is especially pronounced in Japan, where more than a third of Japanese will be 65 or older by midcentury.

Toyota Research Institute (TRI), which was established by Toyota Motor Corp. in 2015 to explore autonomous cars, robotics, and “human amplification technologies,” has also been focusing a significant portion of its research on ways to help older people maintain their health, happiness, and independence as long as possible. While an important goal in itself, improving self-sufficiency for the elderly also reduces the amount of support they need from society more broadly. And without technological help, sustaining this population in an effective and dignified manner will grow increasingly difficult—first in Japan, but globally soon after.

Keep Reading ↓Show less