Differences btw Human walking and Robot walking

Human walking more adaptive to terrain, movement (like walking on a moving train), load, speed, collision avoidance.

That's a good point. More adaptive to..

Hello nzur

Humans are more free to choose where they walk.

Robots do not have the ability of "free will" - yet.

The use of food to operate a biological body with muscles, tendons, brain, all necessary things, is extremely well designed and quite eco-efficient.

Robots have to be made, incurring high pollution, high energy for use.

Kind Regards....

I do not think that the nature(Creator if you wish) had applied minimal energy principle here. This way of walking is very energy wasty. Furthermore, if even human doesn't walk but stands straight it means he's spending a lot of energy. For instance, horse can sleep on all her four with ease, human can't.

left and right legs are not symmetric. I do not see here a principle problem if I know where I go.

Which a way were fatigue problems related to mech constraints?

energy sources: human also needs something we could tie with nervous/psych energy.

If we're talking about useful robot[industrial], I do see here nothing for copying very complex human's way for walking. It would be better to be centered on a better robot's perfomances for work instead a human.

minimal energy principle in my paragraph simply means that human uses natural dynamics(controlled fall) so that it takes less energy. However, general robot follows tracking problem which takes more energy(power) than that of human. It does not need added energy while walking like an falling inverted pendulum.

Constraint means just a limitation of system specification. Being tired of walking, or human can generate only small power at a given time.. but robot can do it if battery supplies long enough, or system is upgraded.

Thanks !!

Human walking is in essence a controlled fall. When you begin walking, you push your center of gravity forward beyond your base and then move your feet to keep up. Stopping motion at nearly any point during a human's stride will most likely result in the human lying in a heap.

Robot walking (as it is normally practiced) is never off balance. A robot's stride can be stopped at any point and the robot will remain completely motionless until the stride is restarted. One notable exception is the "Big Dog" walking machine that was built with a DARPA grant - it has been discussed a few times on this forum and a video of it is floating around the web. It walks very much like an animal (I thought it was some sort of mutant deer when I first saw the video) and seems to have mastered artificial unbalanced walking - at least on four legs.

yeah, that's right.

"controlled fall", human uses natural dynamics for forward walking !!

Thank you for your opinion.. Just forget about that picture.. I lost it -.-;;

Is there any big difference, how you think?

the minimum energy principle you said here, I guess it should be the minimum potential energy principle. duo to you are studying robot control principle.

When you stand up straightly, you would find your pose is not in the way of minimum potential energy. contrarily, its the muximum potential position. any other pose will be less potential than straight situation. its obvious.

Thats why I said above, unless you lay down to get the minimum potential energy.

As matter of fact, robot is belong to an electronic bionics. it s imitative of animal action. so I suggest you'd better learn some 3D bone in some share time.

even in Flash tells you more about how animal motion.

our human motion is a complex compositon motion. its an unstable balance system controlled by our brain.

In animation college, it will take 2 classes to learn how motion form at the least.

simple,

we stretch our leg forward, and rear leg will pull up foot's rear part and make it incline the ground. the toe rely on friction to push body forward, servreal joints acts together until fron leg make front feet on the ground. and make your centre of gravity of body forwrd.

oh, forget it. I cannt use englsih describe it and many name forgot suddenly how to type.

Thanks for your comment !!

You always great guy ..^^:;

I've given this some thought, and as your question relates to the comparison of a robot and a human, I must admit I don't know how a robot walks, (control), but if I was to approach it from the point of view, how would I design a robot to walk, then I could come up with some suggestions. I would look at natures early attempts, the dinosaur, three toes and a heel. I think thats its all to do with the distribution of weight, with the middle ear, the sense of balance, being the rate of change. I could elaberate but I think the sense pads on the foot are the controlling elements of walking.

Regards JD.

There are differences between human walking and other animals' gaits. We design robots to walk by electromechanical principles, but we walk due to biological principles. There are differences.

I once saw a program about this subject and one of the problems they discovered during the study of humans walking was that no two humans walk exactly alike!

We are an adaptive organism. Even after devastating injury we can compensate for all kinds of new constraints.

There is probably some basic underlying algorithm which helps us do this, and will be studied and debated for a long time.

I remember reading about Arctic/Antarctic explorers from the 1800's-early 1900's who had lost all their toes to frostbite, and had to re-learn how to walk by a different means because they no longer could balance on their feet the way they previously could with toes.

Hello, EnviroMan,

Yes and for mountaineers it wasn't an unusual thing too. Just for distracting out of such a gloomy instances we can recall how is learnt to make first steps a child either how is walking a person who had been drinking too much?

Way how we're walking is a result caused by evolution. It gave us an advantage before other species, it had developed ours brains at all. Robots are developing being in absolutely another environment. Therefore, are we needed to waste scarce resourses simply to copy human's walking? Yes human walking is more or less energy optimal, but when we need to move faster, running is a real ordeal and could exhaust most of us quickly. I would consider a grasshopper's (legs and wings) either kangoroo's (legs and tail) kinematics of moving. Maybe add there a couple of wheels? It remainds me something though.

one thing i know or see each time am on a high radio tower working when i look below i see human being walking like someone climbing a 45 degree hill or so i do not know if robot have such a sensitive movement due to different earth sphere and if robot does like human being it will fall down because robot do not have soul,skin-or flesh neither do they have spirit like human.

"Are there any big differences btw human walking and general robot walking ?"

A human relies on all his/her senses to compensate for irregularities in walking, or for that matter, any movement at all. The brain controls every function and even if that human were blind, deaf, etc, another sense would work overtime to compensate for the lost sense. People who have lost a limb, may have a sense to use that lost limb. People who have lost their sight, find that other senses are heightened as compensation. I don't think robots are anywhere near that level of compensation yet.

No, they are not. They are not anywhere near the human level of perception yet (except detectors for IR/UV, or other things we can't perceive directly) so compensation must lag behind as well.