Featured Research

from universities, journals, and other organizations

Cheetah-cub: A robot that runs like a cat

Date:
June 17, 2013
Source:
Ecole Polytechnique Fédérale de Lausanne
Summary:
Thanks to its legs, whose design faithfully reproduces feline morphology, a four-legged "cheetah-cub robot" has the same advantages as its model: it is small, light and fast. Still in its experimental stage, the robot will serve as a platform for research in locomotion and biomechanics.

This is cheetah-cub, a compliant quadruped robot.
Credit: (c) EPFL

Thanks to its legs, whose design faithfully reproduces feline morphology, EPFL's four-legged "cheetah-cub robot" has the same advantages as its model: it is small, light and fast. Still in its experimental stage, the robot will serve as a platform for research in locomotion and biomechanics.

Related Articles


Even though it doesn't have a head, you can still tell what kind of animal it is: the robot is definitely modeled upon a cat. Developed by EPFL's Biorobotics Laboratory (Biorob), the "cheetah-cub robot," a small-size quadruped prototype robot, is described in an article appearing today in the International Journal of Robotics Research. The purpose of the platform is to encourage research in biomechanics; its particularity is the design of its legs, which make it very fast and stable. Robots developed from this concept could eventually be used in search and rescue missions or for exploration.

This robot is the fastest in its category, namely in normalized speed for small quadruped robots under 30Kg. During tests, it demonstrated its ability to run nearly seven times its body length in one second. Although not as agile as a real cat, it still has excellent auto-stabilization characteristics when running at full speed or over a course that included disturbances such as small steps. In addition, the robot is extremely light, compact, and robust and can be easily assembled from materials that are inexpensive and readily available.

Faithful reproduction

The machine's strengths all reside in the design of its legs. The researchers developed a new model with this robot, one that is based on the meticulous observation and faithful reproduction of the feline leg. The number of segments -- three on each leg -- and their proportions are the same as they are on a cat. Springs are used to reproduce tendons, and actuators -- small motors that convert energy into movement -- are used to replace the muscles.

"This morphology gives the robot the mechanical properties from which cats benefit, that's to say a marked running ability and elasticity in the right spots, to ensure stability," explains Alexander Sprowitz, a Biorob scientist. "The robot is thus naturally more autonomous."

Sized for a search

According to Biorob director Auke Ijspeert, this invention is the logical follow-up of research the lab has done into locomotion that included a salamander robot and a lamprey robot. "It's still in the experimental stages, but the long-term goal of the cheetah-cub robot is to be able to develop fast, agile, ground-hugging machines for use in exploration, for example for search and rescue in natural disaster situations. Studying and using the principles of the animal kingdom to develop new solutions for use in robots is the essence of our research."

Video: http://www.youtube.com/watch?feature=player_embedded&v=UWlzMIl7E48


Story Source:

The above story is based on materials provided by Ecole Polytechnique Fédérale de Lausanne. The original article was written by Sarah Perrin. Note: Materials may be edited for content and length.


Cite This Page:

Ecole Polytechnique Fédérale de Lausanne. "Cheetah-cub: A robot that runs like a cat." ScienceDaily. ScienceDaily, 17 June 2013. <www.sciencedaily.com/releases/2013/06/130617104608.htm>.
Ecole Polytechnique Fédérale de Lausanne. (2013, June 17). Cheetah-cub: A robot that runs like a cat. ScienceDaily. Retrieved December 19, 2014 from www.sciencedaily.com/releases/2013/06/130617104608.htm
Ecole Polytechnique Fédérale de Lausanne. "Cheetah-cub: A robot that runs like a cat." ScienceDaily. www.sciencedaily.com/releases/2013/06/130617104608.htm (accessed December 19, 2014).

Share This


More From ScienceDaily



More Computers & Math News

Friday, December 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) — The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
How 2014 Shaped The Future Of The Internet

How 2014 Shaped The Future Of The Internet

Newsy (Dec. 18, 2014) — It has been a long, busy year for Net Neutrality. The stage is set for an expected landmark FCC decision sometime in 2015. Video provided by Newsy
Powered by NewsLook.com
White House: Sony Hack a 'serious National Security Matter'

White House: Sony Hack a 'serious National Security Matter'

AFP (Dec. 18, 2014) — White House spokesperson Josh Earnest says cyber attacks that ultimately prompted Sony Pictures to scrap the release of a madcap comedy about North Korea are a "serious national security matter." Duration: 00:35 Video provided by AFP
Powered by NewsLook.com
Google Maps Lets You Tour Street View in Virtual Reality

Google Maps Lets You Tour Street View in Virtual Reality

Buzz60 (Dec. 18, 2014) — Google Maps now lets Android users see cities on Street View in virtual reality with the special Cardboard feature. Sean Dowling (@Seandowlingtv) has the details. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins