Nature's design wins again! 👏

@rambo8863

2 жыл бұрын

Well ever seen a Jaguar with four wheels insted of legs

@a.s8897

2 жыл бұрын

@@rambo8863 machines doesn't have blood flow that fixes its parts, so they need to be replaceable 👍

You explained one of the marvels of engineering and how basic principles of stability and control are used in its design through fascinating animations and simple sentences. Equations are great, but first the concepts must be understood to some extent using words and visualizations. Thank you very much.

@detectivepanda6976

2 жыл бұрын

kzread.info/dash/bejne/dX6L2deseJvNkaQ.html

@TomakMobile

2 жыл бұрын

aaoa

@mounirbassou9207

2 жыл бұрын

Note I cant work and gavatey is different on Mars or on a noer planet so it will bounce and it will sezz because the sand

The name Asagumo was chosen by the company's founder/CEO, Mr. Pavlo Tanasyuk, who was impressed by the phrase "A spider in the morning brings good fortune" when he visited Japan. "asa" means morning, and "gumo" means spider. It's a fitting name, since the spacecraft will probably land on the Moon in the "morning". From 🇯🇵

@WistrelChianti

2 жыл бұрын

ah yes they had photos of a prototype in a lava tube in Japan IIRC. But I don't think there was a video?

For efficiency of legged rover on flat land, I think wheel can be introduced on the legs

Whenever Lesics uploads, our day gets instantly better

You make it looks easy. Thank you so much for sharing this knowledge.

*For Lesics* -- This channel is literally born to make history

@dinhtuan752

2 жыл бұрын

This is a bot.

@nou5440

2 жыл бұрын

there is a sexbot here

@dinhtuan752

2 жыл бұрын

ok

Is there a concern with a legged rover on the increased number of moving parts? With 3 motors per leg and no redundancy, a single failure seem like it would disable the whole rover. It might be able to limp along with a leg disabled, but it would not be nearly as stable.

@cornbreadcuban5456

2 жыл бұрын

4 motors become 12 with a much smaller solar panel footprint. An Axel can hold more weight than the leg with less effort. Not to mention that the motors on the legs have to constantly resist gravity so there's no turning off. For locking joints you would have to include some sort a gear ratio that would also make motors work harder. There's definite advantages but I think for more niche situations. like in addition to a rover that can detach for short periods to investigate areas too dangerous for the rover.

@nicevideomancanada

2 жыл бұрын

his big brother with 8 legs arrives and removes broken leg and donates one of his then returns to the mother ship to get fixed to be able to return to his sister

@nocare

2 жыл бұрын

@@cornbreadcuban5456 Any gearing that helps the legs not move without power would also help the motor work less. A gear system that is hard to backdrive is one that amplifies torque by sacrificing speed. Generally speaking it is easier to use a geared motor than it is to use a direct drive and so unless designed otherwise most electric drive legged robots are not back drivable under their own weight and stay in the current position when powered off. It's actually not accurate that increased motor count increases failure rate in some linear fashion. It simply means that when you reach the far side of the failure bathtub curve you expect immediate failure rather than having a chance at continued operation.

@yorinov2001

2 жыл бұрын

one issue with legs is a large amount of energy is wasted repositioning the legs for the next step where a wheel is 100% turning energy into motion all the time

@nocare

2 жыл бұрын

@@yorinov2001 in an ideal scenario both legs and wheels have equal efficiency, Level ground that does not deform under pressure, wheels and legs that don't deform, perfect recapture of inertial energy ect. So the only reason one system is more or less efficient is because of the stuff the is unequally imperfect, between them. Each motion forward and backward on a leg is the same efficiency but every up and down motion wastes some energy to friction and motor inefficiency. The same is true for every bounce of the suspension on a tire or the deformation of the rubber in the wheels. In general on hard flat terrain wheels are more efficient but on everything else legs generally are more efficient. This is because terrain deformation dominates energy losses and legs deform terrain less and have no rolling friction to deal with.

Good morning 🌞 This video is OUTSTANDING and very informative 👌👍✨🚀🧐 Cheers 👍👌🍻

And what prevents you from making a rover according to the classic wheel scheme, but with the possibility of shifting the center of gravity? After all, you can use the same principle of chassis suspension, but on wheels, it's easier and less energy-consuming. In extreme cases, if the climb is really very steep and the wheels slip, or the climb has obstacles in the form of stones, you can block the wheels and overcome the climb by walking.

@Alexandr_Lee

2 жыл бұрын

This is quite possible, but then the rover will become even more complicated, it will be a wheeled rover + walking = even more possible points of failure. An even bigger plus is that the rover can roll itself over after a fall, which may not be so easy to do if the wheels are bolted to the legs. Such a hybrid will also be heavier than a walking rover. Yes, it will consume less energy while riding, but more while walking. There are also problems with the suspension, which is difficult to implement on such a hybrid. In general, the idea of ​​such a hybrid is not new, and it has some sense, but also its drawbacks.

@Top_YouTube_Music

2 жыл бұрын

@@Alexandr_Lee I personally see this idea as more promising than just a walking rover. I don't see any significant problems in putting the overturned rover back on the wheels, as well as problems with the suspension.

@rambo8863

2 жыл бұрын

@@Top_KZread_Music I say we send the walking rover a car. The walking rover can study things close in rugget tearain, whaile the car can carry stuff and drive long distance on semi smooth ground

@billul1

Жыл бұрын

I think one advantage legged rover could have not mentioned by the video is that you could give the legs some kind of suction or gripping mechanism to handle even more extreme terrain. Like climbing vertically up and down a cliff.

If you think about, these could be parked and a robotic arm could be installed to clean the solar panel. This would be huge because now we can perhaps double the life time of our mission

Can't we make a hybrid of two models which uses legs on tougher terrains and wheels on flat ones

@angadsingh9314

2 жыл бұрын

Probably could.

@MrT------5743

2 жыл бұрын

I am sure they could. but sometimes depending on the mission having both options might add too much weight and complexity. Having wheels, legs or both each have drawbacks and advantages. I am sure the best of these options or even other movement options (flight for instance on planets with atmosphere) depending on the mission and terrain features will dictate what is chosen.

@JWQweqOPDH

2 жыл бұрын

Just put wheels on long legs.

@WistrelChianti

2 жыл бұрын

Mission 2 would have a wheeled rover IIRC

Extraordinary video.

@dinhtuan752

2 жыл бұрын

This is a bot.

@dinhtuan752

2 жыл бұрын

Ps reply to anything.

Thank you so much for preparing me for physics in my junior year. One day dream: NASA!!🚀

I respect everyone who are watching this amazing video

Next upgrade: how to jump forward how to roll downhills

What if anyone motor is stoped due to some issue .. In wheels one motor is stoped the wheel continues to move 🤔🤔

@wendersoncandidoea

2 жыл бұрын

True

That was interesting to watch... Cool work 👍

doesn't the center of gravity also shift slightly in the direction of the lifted leg since that leg is now also weight that must be supported by the other 3?

@nocare

2 жыл бұрын

No the CG stays the same. Yes the other legs now must support the weight to the apparent weight they feel changes as well as the torque being applied the system. Yes extension of the leg away from the body changes CG but not because its off the ground but because the mass is on a longer lever arm. Lifting a leg and extending it can move the CG far enough that it leaves the stability triangle.

Simply amazing

What Explaination !!! No words to describe.

Very nice explaining of the stability criteria for static walking.

I don't think there's ever better explanation than this👌👏Great visual demonstrations and great narration

What if we mix both technologies and make a rover that has limbs as well as wheels ??

Thank you for explaining this so clearly. I'm definitely going to try this in Kerbal Space program

And a cannon on the back to deal with extraterrestrials.

One of the best video to introduce Multi Body Dynamics Technology innovation in R&D industrial sector....

Thanks for the idea: straight out of a game but works.

Great animation again. I think they should make 6 leg rower. Most insect has 6 legs and the nature know why.

You took my breath away

Thanks for your elaboration. However, to add wheels as well may be overcome the disadvantages of slow pace over plains

Wheels on legs would give the best of both worlds. Like a spider on rollerskates

The rover and this video both are awesome!!!

Truly enjoyed your explanation and animation!!!

Making space Mecha-spiders now, are we? But for real, awesome video as usual. Thank you.

We need this type of Rovers to inspire the Upcoming Generation! 👍

8:30 coolest part of the video

Thanks From India 🇮🇳❣️

Great work 🥳🥳🥳 Thank you 💜💜💜

Really love watching your video

Wow 🤩. Add light wheels to turn it into a hybrid. More vids like this please))

They should make it it reversible so that it has no upside down. It can just stand back up that way if it flips over.

@curiodyssey3867

2 жыл бұрын

I'm sure they thought of that

@thanos879

2 жыл бұрын

@@curiodyssey3867 True. It might make the instruments onboard have to be more complicated than necessary for that.

@thanos879

2 жыл бұрын

or they found some other issue that im not smart enough to think of 😂

@MrT------5743

2 жыл бұрын

Having redundant solar panels adds weight and complexity. Looks like the legs articulate only so much too. Sometimes just being able to flip back over is easier, cheaper and less complex and over all better.

The nasa minds group i worked with wanted to create a leggen robot but we went with 6 legs for stability. Otherwise a 4 legged bot has to move 1 single limb at a time. It basically crawls

Legged system usses more energy and computational power hence not preferred for space exploration as of right now.. may be advancement in technology would allow it

Sadly, but moving one leg at a time is much unstable than moving dynamically all 4. All robots that tries this one by one step less stable than dynamically controlled. This is why Boston dynamics are step ahead in stability.

@nocare

2 жыл бұрын

Boston dynamics doesn't lift 2 legs at a time because its more stable. They do it because its faster. By smoothly having a weight shift that flows into the next you get continues motion of the legs and larger possible steps. A robot that moves slower and more methodically will always be capable of more stability given the same level of technology. Your claim would be no diffrent than saying that a human who is jogging across rocky terrain is less likely to slip and fall then one that tests each step before shifting their weight onto that foot slowly. The real reason boston dynamics is more stable is they have faster more capable control systems that can react quickly. A robot like this generally can't move its limbs very fast and so cannot respond to disruptions in stability that are unexpected quickly enough to catch itself The analogy for a human is an old vs a young human. A young human can move fast or slow and is more stable while slow. An old human can't move fast and for the sake of analogy has the same stability while slow. Both are perturbed from a stable state the young human flails their arms and catches themselves while the old human can't respond quickly and falls. Your initial comparison is like saying the slow methodical movement of the old human is why they fell while the fast jogging of the young human kept them upright. In reality the young human just has better reaction times and can move their limbs quickly enough to catch themselves and would be more stable if they had been moving slow like the old human was.

Oh snap!It is my dream to see whats in those lava tubes! Probably whole bunch of nothing but still, very exciting

Horizon is very close on the Moon. In order to see where you are going you want cameras on top of the mast as high as reasonably possible. Legged robot have his cameras lower compared to a similar wheeled one. It means it can hardly see where it is going. It also has twice the motor count and control logic is simple only as long as you walk on flat surface and your legs do not trip on anything.

That is really cool.

Excellent Bro...

I guessed that there will be servo motors used for walking for the four-legged rover and I was correct.

Nice video, I'm going to listen to it now🔥

Cool, biomimicry, again. Nature perfected it first. God bless.

I asked the same question to a nasa engineer long time ago. He said the reason why they stick with the wheel design is because it's reliable. More moving parts means more room to malfunction.

Robotic legs are something we really don't have a practical use yet for but I'm happy that it might be rovers

Cool commercial..~smirk~

Awsome, Can we take 1 min to appreciate how Skillful graphics editing is done here?

I respect you 🇮🇳

thanks

Okay now listen here. What if... that rover was your own house.

Hello. Klasse video 👍👍👍👍👍👍👍👍Thanks.... Fim 🚂👮‍♂️✋

Awesome sir🤘

I can't wait to see one on Mars.

Great

Yes First u have to decide how much height the lift should carry suppose an average man weight to be 75 kg if u want 5 people lift capacity then Total lift to carry weight is 5*75 Know how it's work It's is based on counterweight system cable In this if u put weight of 100 kg Then from other cable an weight is attach which go upwords when u come download and when u go downward then it's go upwards..

Your videos are owsome

Jesús, the control systems and electronics must be a huge nightmare.

Millions of years later aliens find these on the moon and they will be like: "MuN'gNobz, bring the flammenwerfer"

Nice video

@dinhtuan752

2 жыл бұрын

This is a bot.

Brilliant Spiders do this better since billion years.

Very good

@dinhtuan752

2 жыл бұрын

This is a bot.

What program are you using to make this animation? (if anyone knows please tell me)

@Knight_Kin

2 жыл бұрын

Could be blender or 3d studio max, two i can think off of the top of my head.

Very Nice Bro! Get Good People!

One correction: the center of gravity shift is also doable with a wheeled Rower, the wheels just need to be attached to legs. :D 2:22

great 👍🏻 sir

Fantastic. Miniaturize this and you have the perfect killer. Is there a future for mankind ?

This is like the dwarf spider droid in Star Wars

I love how ridiculously slow the solar pannel on it's head is, it's very cute, I hope they're not implying this is supposed to power the rover lol

Asagumo: "We need more pylons!"

I'm the first to like the video 😀🇮🇳

F* yeah moon spiders!

This company better eventually add a Ore refinery called "King" and a 3D printer called "Queen" on a future mission.

aliens have now acquired arachnophobia

Need a video about Lidar

I'm her bin daddy-BBH 2022 Y'all gona like?

I'm not sure This guy know's about inverse kinematics. (If anyone is curious, I built a 2 legged robot on my channel and I explain inverse kinematics works)

Just do one thing in Wheeled ROVER , made inside a mechanism and program such that it shifts inside heavy parts in front side of rover while climbing the Slope . So it won't fall or disbalance just climb. Motor must be Powerful and Grip of tyres be best. SORRY IF THERE IS ANY/MANY Mistake 🙏🙏🙏🙏🔥🔥

Can you make a video about motor command ?

put some wheels on dem legs, best of both worlds⚙🦵

Basically the same as how we walk but with 2 extra legs

I think a design with powered wheels attached to a simpler form of extremities would be better. The wheels are better most of the time and the legs need to be actuated only when there are obstacles.

Molly! DRG for the win.

sir, your explanation is very well. can you explain how to print billions of transistors in a single semiconductor surface.

Do MPU6050's work in space? Any info on how the touch and torque sensors work or what is being used for them and the servos. Any other tech specs you know about? What are the approximate dimensions of the main cube?

@WistrelChianti

2 жыл бұрын

OK checked, -40 to +85C, moon is -183 to +106C so guess it's going to have to be heated/cooled in the center of the main body. Dunno about radiation resilience.

Hi Lesics, sorry for the question but what software do you use for the animations? xD

Can you explain what did you mean when saying about moving one motor ? Because it was visible that every other motor also moved. If my understanding is correct, it should mean that you're controlling one motor's variables and others are adjusted to satisfy some constraints. If this is the case, what are those constraints ?

@WistrelChianti

2 жыл бұрын

I think he was only moving one motor in the explanation at a time for clarity's sake. Similarly the jerky movement was to illustrate that the motors may have a minimum movement that they can reliably measure, at motor this is often barely perceptible but can be amplified the longer the attached lever. Even so it was exaggerated here just for illustrative purposes.

Can you make a video on C-RAMs

Add small wheel to each leg! And its fast!

Why not add retractable robotic wheels to this legged rover to minimize the efficieny loss arising out of its movement on plain surface?

@Nom8d

2 жыл бұрын

Like they mention in the start, the wheels are not optimal for sloped surfaces

@adityagupta_1995

2 жыл бұрын

@@Nom8d do u undrstnd d diff. btwn fixed wheels & retractable wheels?

Sir we can put extra wheels for flat surface

Add 2 more legs and make it walk like ant... should be fast on flat surface as well. Downside: even more complex movement.

@MrT------5743

2 жыл бұрын

Weight would also be a downside. But depending on the mission and terrain it will encounter might be better.

@darkestkhan

2 жыл бұрын

@@MrT------5743 Indeed - it would be also worse on energy consumption metric.