Most accurate robotic legs mimic human walking gait (w/ Video)

Jul 05, 2012

A group of US researchers has produced a robotic set of legs which they believe is the first to fully model walking in a biologically accurate manner.

The neural architecture, musculoskeletal architecture and pathways in humans have been simplified and built into the robot, giving it a remarkably human-like walking gait that can be viewed in this video:

This video is not supported by your browser at this time.

The biological accuracy of this robot, which has been presented today, Friday 6 July, in the , has allowed the researchers to investigate the processes underlying walking in humans and may bolster theories of how babies learn to walk, as well as helping to understand how spinal-cord-injury patients can recover the ability to walk.

A key component of the human walking system is the (CPG). The CPG is a in the lumbar region of the spinal cord that generates rhythmic muscle signals. The CPG produces, and then controls, these signals by from different parts of the body that are responding to the environment. This is what allows people to walk without needing to think about it.

The simplest form of a CPG is a half-centre, which consists of just two neurons that fire signals alternatively, producing a rhythm. The robot contains an artificial half-centre as well as sensors that deliver information back to the half-centre, including load sensors that sense force in the limb when the leg is pressed against a stepping surface.

Co-author of the study, Dr Theresa Klein, said: "Interestingly, we were able to produce a walking gait, without balance, which mimicked human walking with only a simple half-centre controlling the hips and a set of reflex responses controlling the ."

The researchers, from the University of Arizona, hypothesize that babies start off with a simple half-centre, similar to the one developed in this robot, and over time they 'learn' a network for a more complex walking pattern. This could explain why babies have been seen to exhibit a simple walking pattern when placed on a treadmill even before they have learnt to walk – a simple half-centre is already in place.

"This underlying network may also form the core of the CPG and may explain how people with spinal cord injuries can regain ability if properly stimulated in the months after the injury," Dr Klein continued.

Explore further: Lawsuits challenge US drone, model aircraft rules

More information: "A physical model of sensorimotor interaction during locomotion", Klein et al. 2012 J. Neural Eng. 9 046011 iopscience.iop.org/1741-2552/9/4/046011

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User comments : 16

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ChangBroot
1.6 / 5 (14) Jul 05, 2012
Heheeehehe. Extremely funny. You just want fill-in your web-pages with nonsense. "Most accurate robotic legs..." more like "Worst robotic legs." Honda's Asimo can do much better.
Bowler_4007
4.2 / 5 (10) Jul 05, 2012
Heheeehehe. Extremely funny. You just want fill-in your web-pages with nonsense. "Most accurate robotic legs..." more like "Worst robotic legs." Honda's Asimo can do much better.
just a quick skim and you'll find that it says the stuff to make it walk is all built in, an Asimo is controlled by an external computer, so if this thing can walk almost like a human (which would be better than an Asimo by itself) and do so independently then this thing far surpasses an Asimo in terms of walking
zz6549
3.6 / 5 (8) Jul 05, 2012
Bowler..

Despite this site being called "Phsyorg", knowledge of physics is not a prerequisite for posting in the comments.Unfortunately, nor is it a prerequisite to have any level of intelligence beyond what is required to click the "Submit" button.

The gentlemen to which you are replying clearly lost interest in reading after the first four words of the title, and after the grueling 11 seconds of video the only thing his exhausted mind could muster was a hilariously misinformed comment.

Save yourself the pain of replying to people like that. They won't learn, because they simply don't want to.
Munix
5 / 5 (3) Jul 05, 2012
The science behind this is fantastic.
And the video gives me a heads-up cause if I am ever walking down the street and hear these "steps" behind me I will know to just run.
I know what some will say, that I cannot out run an artificial life form! You're right. I just have to out run you;-)
TabulaMentis
1.8 / 5 (5) Jul 05, 2012
Heheeehehe. Extremely funny. You just want fill-in your web-pages with nonsense. "Most accurate robotic legs..." more like "Worst robotic legs." Honda's Asimo can do much better.
Heheeehehe. Someday that robot is going to take away your job, that is if computers with artificial intelligence does not do it first! Good luck on paying back the National debt! Heheeehehe.

Links:
http://en.wikiped...lligence
http://en.wikiped...Robotics
Vendicar_Decarian
5 / 5 (3) Jul 05, 2012
This is by far the best walking robot ever made in America.

http://www.colleg...ing-cart
kevinrtrs
1.6 / 5 (14) Jul 06, 2012
If I were to tell you that a tornado intermittently blew through a junkyard for a hundred years and as a result this robot got assembled, you'd tell me to crawl back under the rock I just came from.
Why? Simply because you recognize that it took decades of dedicated hard work by all kinds of specialists to design, test and manufacture the individual components, until it all came together via a purposeful design by another team of engineers.

Yet, when it comes to the human body [on which this robot is modeled and which is exponentially more complex than this robot] people want to believe that it all came together by accident, some random chance with NO intelligence required.

It would seem there is clearly a disconnect between what people know to be true and what they want to believe.
Bowler_4007
3.4 / 5 (5) Jul 06, 2012
Bowler..

Despite this site being called "Phsyorg", knowledge of physics is not a prerequisite for posting in the comments.Unfortunately, nor is it a prerequisite to have any level of intelligence beyond what is required to click the "Submit" button.

The gentlemen to which you are replying clearly lost interest in reading after the first four words of the title, and after the grueling 11 seconds of video the only thing his exhausted mind could muster was a hilariously misinformed comment.

Save yourself the pain of replying to people like that. They won't learn, because they simply don't want to.
i appreciate your concern but i'll reply to whoever i want in the manner i want
Bowler_4007
5 / 5 (4) Jul 06, 2012
If I were to tell you that a tornado intermittently blew through a junkyard for a hundred years and as a result this robot got assembled, you'd tell me to crawl back under the rock I just came from.
Why? Simply because you recognize that it took decades of dedicated hard work by all kinds of specialists to design, test and manufacture the individual components, until it all came together via a purposeful design by another team of engineers.

Yet, when it comes to the human body [on which this robot is modeled and which is exponentially more complex than this robot] people want to believe that it all came together by accident, some random chance with NO intelligence required.

It would seem there is clearly a disconnect between what people know to be true and what they want to believe.
ideas tend to be easier to believe when there is proof, you prove there is a god and you'll soon see people questioning evolution
TabulaMentis
3.8 / 5 (4) Jul 06, 2012
Ideas tend to be easier to believe when there is proof, you prove there is a god and you'll soon see people questioning evolution.
Scientists believe the universe originated from nothing. Religious people believe God has always existed. No wonder you morons are arguing with each other.
Mike_Massen
3.7 / 5 (6) Jul 06, 2012
kevinrtrs again lies & misrepresents evolution
If I were to tell you that a tornado intermittently blew through a junkyard for a hundred years and as a result this robot got assembled..
kevinrtrs seems to have no conception or understanding of scaffolding & how to correctly apply probability & permutations over an incredibly long time frame !

kevinrtrs is thus showing himself to be lacking in intelligence & imagination & suffering severe loss of memory recently !

kevinrtrs has been through this before but cant get over his emotional hypnosis to the idea of a deity that has INCREDIBLE difficulty in communicating !

kevinrtrs, your deity doesnt exist !

Maths & advanced permutation and probability theory does show that huge space & immense time allow more than enough opportunity for complex organisms to arise from scaffolding.

kevinrtrs get with the program, grow some imagination & intelligence (quickly), not necessarily in that order :-)

kevinrtrs, start with molecules !
Birger
5 / 5 (2) Jul 06, 2012
Simple systems give rise to more complex systems.
Keep it up for a few billion years...
TheGhostofOtto1923
3.3 / 5 (4) Jul 06, 2012
Yet, when it comes to the human body [on which this robot is modeled and which is exponentially more complex than this robot] people want to believe that it all came together by accident, some random chance with NO intelligence required.
Naw this robot shows that we can do much better than god, who gave us weak joints prone to arthritis and bursitis and which need replacing long before we are ready to die.

And how come we cant grow new teeth when the old ones wear out? Many animals can do this. Was god being stingy or just absent-minded?
http://en.wikiped...r_design

-Like I say we can and will do MUCH better. We are even becoming able to fix gods many cockups.

And WHY doesnt our reproduction rate adjust naturally to the carrying capacity of the region in which we live? I know it does EVENTUALLY, but we are still reproducing tropically.

Do you KNOW what problems this would solve, if our repro were seasonal like vulcans or deer?

THANKS god.
Deesky
5 / 5 (1) Jul 06, 2012
@ kev,

If I were to tell you that a sky fairy intermittently blew holy smoke through a planetary junkyard for a few days and as a result humans got assembled, you'd tell me to crawl back under the rock I just came from (which we constantly do!).

Why? Simply because you recognize that it took millions of years of physics at work with all kinds of chemical elements to combine the individual components, until it all came together via environmental energy gradients, with no need of a deus ex machina design by a sky fairy engineer.

Yet, when it comes to the human body [which is modeled on said sky fairy and yet is a fundamentally flawed design] people want to believe that it all came from the infallible super fairy!

It would seem there is clearly a disconnect between what most people know to be true and what I, kevin, want you to believe.
PhotonX
5 / 5 (1) Jul 08, 2012
OFF TOPIC
...a tornado intermittently blew through a junkyard for a hundred years and as a result this robot got assembled, you'd tell me to crawl back under the rock I just came from....
Yet, when it comes to the human body people want to believe that it all came together by accident...
The same old BS again. Who expects to throw a trillion cells into a bag, shake real hard, and see legs drop out?
.
You can't understand the difference between 4 billion years of evolution by an adaptable biology vs. a couple of hundred years of technological development? Your strawman arguments just never get old, though, do they?
.
It would seem there is clearly a disconnect between your prejudiced, unchanging beliefs and the massive amount of knowledge assembled by millions of scientists over the last 5 centuries.
.
How long would my account would last on your Christian website if I regularly made posts proclaiming the inerrant truth about evolution and atheism? Not long, I'll bet.
Isaacsname
5 / 5 (2) Jul 08, 2012
That maneuver is called " The Pimp Limp "