News / Science & Technology

Autonomous Aerial Robot Maneuvers Like a Bird

An autonomous flying robot avoids a tree on the Cornell Arts Quad (credit: Saxena lab)
An autonomous flying robot avoids a tree on the Cornell Arts Quad (credit: Saxena lab)
Researchers at Cornell University have developed a flying robot they say is “as smart as a bird” because it can maneuver to avoid obstacles. They say it eventually could be used in search-and-rescue operations because of its ability to maneuver through forests, tunnels or inside damaged buildings.

“Most previous robots assumed perfectly known location of obstacles,” said Ashutosh Saxena, assistant professor of computer science who led the team developing the robot. “Some of the recent ones used 3-D cameras to navigate indoors. However, these techniques did not apply to outdoor environments with unstructured obstacles like trees, branches and poles. In that sense, this is a first one that can learn to avoid such obstacles.”

Miniature Aerial Vehicles are commonly used today for a variety of tasks, but they are mostly guided by humans using Global Positioning System (GPS) technology. Saxena’s team wanted to program the robot to recognize obstacles and avoid them on its own with limited human assistance.

Saxena explained that requirement by noting that there is no guarantee there would be GPS coverage in a fallen building, and that human controllers can’t always react quickly enough in tight areas.

“The operator is looking at a tiny screen and trying to control the machine,” he said. “They don’t have the physical sense of where things are.”

Saxena, along with his team of Ian Lenz and Mevlana Gemici, tested the programming using a commercially available quadrotor flying machine, which is about the size of a small table and has four helicopter rotors. The first step, Saxena said, was to program the quadrotor to navigate through hallways and stairwells.

The trick was to teach the robot to avoid obstacles in less predictable environments such as outdoors. Saxena and his team were able to program the robot to turn a flat image into an approximate 3-D model of the environment to estimate the size and distance of an object and then take evasive action at the appropriate time.

Still, hurdles remain before the robot could be used in a real-world scenario. It still needs to be able to adapt to environmental variations like wind as well as be able to detect moving objects like birds.

“It would not be zipping through like in Star Wars,” he cautioned.

The project is supported by a grant from the Defense Advanced Research Projects Agency (DARPA).

Here's a video of the aerial vehicle in action:

You May Like

US Investors Eye IPO for China's Alibaba

E-commerce giant handled 80 percent of China's online business last year, logging more Internet transactions than US-based Amazon.com and eBay combined More

Video Uneasy Calm Settles Over Israel, Gaza Strip

As cease-fire begins, Palestinians celebrate in streets; Israelis remain wary More

Video Chinese Doctors Use 3-D Spinal Implant

In treatment of a 12-year-old boy Chinese doctors used a 3-D printer and special software to create an exact replica of vertebra More

This forum has been closed.
Comments
     
There are no comments in this forum. Be first and add one

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Chinese Doctors Use 3-D Spinal Implanti
X
August 27, 2014 4:53 PM
A Chinese boy suffering from a debilitating bone disease has become the first patient with a part of his spine created in a three-dimensional printer. Doctors say he will soon regain normal mobility. VOA’s George Putic reports.
Video

Video Chinese Doctors Use 3-D Spinal Implant

A Chinese boy suffering from a debilitating bone disease has become the first patient with a part of his spine created in a three-dimensional printer. Doctors say he will soon regain normal mobility. VOA’s George Putic reports.
Video

Video Uneasy Calm Settles Over Israel, Gaza Strip

Israel and the Gaza Strip have been calm since a cease-fire set in Tuesday evening, ending seven weeks of hostilities. Hamas, which controls Gaza, declared victory. Israelis were more wart. VOA’s Scott Bobb reports from Jerusalem.
Video

Video India’s Leprosy Battle Stymied by Continuing Stigma

Medical advancements in the treatment of leprosy have greatly diminished its impact around the world, largely eliminating the disease from most countries. India made great strides in combating leprosy, but still accounts for a majority of the world’s new cases each year, and the number of newly infected Indians is rising - more than 130,000 recorded last year. Doctors there say the problem has more to do with society than science. VOA News reports from Kolkata.
Video

Video Northern California Quake: No Way to Know When Next One Will Hit

A magnitude 6.0 earthquake rocked northern California’s Napa Valley on Sunday. Roads twisted and water mains burst. It was the wine country’s most severe quake in 15 years, and while hospitals treated many people, no one was killed. Arash Arabasadi has more from Washington on what the future may hold for those residents living on a fault line.
Video

Video Scientists Unlock Mystery of Bird Flocks

How can flocks of birds, schools of fish or herds of antelope suddenly change direction -- all the individuals adjusting their movement in concert, at seemingly the same time? British researchers now have some insights into this behavior, which has puzzled scientists for a long time. VOA's George Putic has more.
Video

Video Ukraine: Captured Troops Proof of Russian Role in Separatist Fight

Ukrainian officials say they have captured Russian soldiers on Ukrainian territory -- the latest accusation of Moscow's involvement in the conflict in eastern Ukraine. VOA's Gabe Joselow reports from the Ukrainian side of the battle, where soldiers are convinced of Russia's role.
Video

Video Rubber May Soon Come From Dandelions

Synthetic rubber has been around for more than a century, but quality tires for cars, trucks and aircraft still need up to 40 percent or more natural rubber content. As the source of natural rubber, the rubber tree, is prone to disease and can be affected by bad weather. So scientists are looking for replacements. And as VOA’s George Putic reports, they may have found one in a ubiquitous weed.
Video

Video Jewish Life in Argentina Reflected in Yiddish Tango

Jewish people from across Europe and Russia have been immigrating to Argentina for hundreds of years. They brought with them dance music that were eventually mixed with Argentine tango. The result is Yiddish tango -- a fusion of melodies and cultural experiences that is still evolving today. Elizabeth Lee reports from the Skirball Cultural Center in Los Angeles, where one band is bringing Yiddish tango to an American audience.

AppleAndroid