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Robots with spine

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Robots with spine

Post  Gilda on Sun Oct 24, 2010 11:09 pm

I found this video an I want to share with you.
The swan is a amazing in it's moves
http://www.popsci.com/technology/article/2010-09/video-robotic-dying-swan-gets-down-business

Mabe someday robots will have a spine?

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Re: Robots with spine

Post  ico on Mon Oct 25, 2010 5:59 am

c'mon that's no spine that's just a bunch of servos - it's like on lego mindstorms level + the robot is lame...snake robots are much more developed and have something what you really could call a spine.
And humanoid robots don't really need a spine.

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cool video

Post  Gilda on Mon Oct 25, 2010 8:16 pm

Cool the snake video.
Sorry I am not a roboticist, I am just a curious girl about robots Laughing So mabe I don't know the difference. But my purpose is to learn. And we learn a lot doing mistakes
My focus is more about learning and cognition. I'm a teacher and I research about the learning processes. So AI is very interesting to me..
Sorry if I misspell something but my native lenguage is Portuguese.

Ok about robots don't have need of a real spine. But it's true that more segmentalization in a robot's body means more mobility and ability to explore environments.

Nice to make friends here, discuss and learn

Hugs

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Re: Robots with spine

Post  ico on Tue Oct 26, 2010 3:15 am

Gilda wrote:Cool the snake video.
But it's true that more segmentalization in a robot's body means more mobility and ability to explore environments.
...depends on what you mean by robots...there can be millions of different designs...and a spine is too complicated to just place it in any robot that doesn't even need it
And for a humanoid robot - he is OK with one joint with 3 DOF
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Re: Robots with spine

Post  Gilda on Tue Oct 26, 2010 8:10 pm

Sorry Razz
But What means DOF ?( remember, I am not an English native speaker)

Yes, yes.. you're right. I forgot to mention what kind of robot.

For humanoid robots:

Maybe not a real spine. But some segmentation. Specialy talking about lower belly.
Let me explain why:
If this humanoid robot is supposed to sit down and rise, and if you try to make it a little human-like, so the machine will have to compensate it's gravitational center. Human gravitational center is placed in a region near the lower belly. But when human sits or rises it tends to be deslocated up or down and there is a compensation in the body ( My english is very poor to put it in a better way).
I am talking specificaly about Aiko. If we want her to look and act like a human being, she will not stand everytime, isn't it?
We suppose she might be able to walk, go up and down stairs and sit-down and rise, isn't it?

Maybe your answer about 3 DOF is the answer, but as I don't know yet what DOF means... I am a little lost.
Can you explain a little more please?

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Re: Robots with spine

Post  ico on Wed Oct 27, 2010 5:06 am

Gilda wrote:But What means DOF ?
"Degrees of freedom are the axes around which it is free to move."

"Degrees of Freedom (DOF)
Each degree of freedom is a joint on the arm, a place where it can bend or rotate or translate. You can typically identify the number of degrees of freedom by the number of actuators on the robot arm. "

1 DOF is one axis around it can move. A joint can have max 3 DOF in 3D space. And a robot can have more joint.

You can learn some basic stuff about robotics on this site:
http://www.societyofrobots.com/robot_arm_tutorial.shtml
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I think you're right

Post  Gilda on Mon Nov 01, 2010 7:15 pm

Thanks about the robotic lessons. If I understood it right:

Maybe 4 DOF in lower belly.
3 simulating balance to seat and one to rotate body left and right. She will be able to turne her upper body without need of turning all her body.

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Re: Robots with spine

Post  mikeccuk2005 on Sat Nov 13, 2010 10:41 am

you might consider robot with similar bone and muscle movement like:

and

Here we going to use a lot of bone - strings motor attachment. The choice for placing each motor is more freely than motor running directly at the joints
Likely 3 DOFs like this is going to be like 3-6 little motors. I think this is better, places like bicep muscle movement may require combined torque/strength from multiple motors

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Re:Robots with spine

Post  Gilda on Mon Nov 22, 2010 10:40 pm

I've heard about Kojiro. It's so cute! He looks like a good boy!
He's all anatomically flexible.
Ecerobot is the first time I see.
They are nice, but aren't these kind of robot more expensive to do? They simulate muscles and spine in another level of tecnology.
Maybe @Ico is right about the price of a real and complete spine.
But they are really cool!
***
I've found this guy Reem-B: He can sit down and stand up , he also does a great amout of things.
Take a look at it's movements to sit down.
http://www.youtube.com/watch?v=YSfaRcmsrtw
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