Shulou(Shulou.com)11/24 Report--

How to embarrass a robot? Boston Dynamics released a collection of Atlas mistakes, watching the robot roll over all over the net!

Last week, Boston Dynamics shared a video of the humanoid robot Atlas turning into a "construction robot".

The Atlas in the video is very active. Lifting boards, moving bricks and so on, is no problem, but also can happily turn around.

After jumping up the steps easily, Atlas turned and took off and smoothly threw a bag of tools to the construction workers on the scaffolding.

After work, Atlas happily did a 360 °back somersault. What is more amazing is that after standing still, it will make a fist to encourage itself.

As the saying goes, "one minute on the stage takes ten years of hard work off the stage." Atlas's exquisite performance is inseparable from the training again and again.

On Friday, Boston Dynamics released a tidbit of an Atlas show to see what "rollover" moments the robot has.

The scene in the video of an awkward moment of a robot is similar to the one released last week. Atlas's actions are similar to those of the former, except that they are all faulty versions. It may trip over itself while taxiing backwards and fall upside down.

Or when crossing a log bridge, one foot slips and the horse turns upside down.

There are many similar rollover sites. There are those who "lose both people and money":

There are those who can't move and swing in place:

There are also those who "grab land with their heads":

If Atlas can talk, if you see it in this video, you will surely have a backflip in the ground.

The secret of counterattack

So how did Atlas successfully counterattack? In order to improve the performance of Atlas, the Boston Dynamics team spent five years iterating over the robot to continuously improve the environmental awareness and adaptability of Atlas. At the same time, Atlas's ability to act independently has also been enhanced.

In order to complete all kinds of complex operations, one must first keep a balance in the movement.

The original Atlas stumbled, still stiff during the walk, unable to move the whole body when it was about to fall, and only regained its balance by changing its pace.

Thanks to the efforts of the researchers, Atlas, like a newborn, gradually learned to wave his arms to maintain his balance. The research team uses quintic splines to generate advanced required motions (such as swinging foottracks), using a given footstep position as the node of the spline.

The Boston Dynamics team says the body structure of robots is very different from that of humans. For example, it has no spine and shoulder blades, and its arms are fragile.

Therefore, the team must weigh its weight, intensity, activity ability and other elements according to the size and complexity of Atlas, and constantly optimize the control algorithm, so as to better coordinate its various actions.

Despite the fact that it is a big man of 1.5 meters, the Atlas is as light as a swallow in the robot world.

In order to maintain the flexibility of the fuselage, Atlas uses 3D printing to reduce weight and space, thus forming a robot with high strength-to-weight ratio and large workspace.

Aaron Saunders, an engineer at Boston Dynamics, said

Print through 3D. We can significantly reduce physical inertia, which is a big deal for walking robots-most of the energy in the system is used to swing heavy legs in the air.

In addition, Atlas can sense obstacles and cross rugged terrain autonomously or remotely through stereo vision, distance sensing and other sensors. The research team provided Atlas with a high-level map that outlined its course of action and what should be done at its appropriate location.

Atlas uses this information to navigate and perceive the surrounding environment, and according to the perceived real-time data, independently plan the whole action to complete various tasks.

Each action performed by Atlas comes from the action template in its behavior library, and it can independently select the corresponding action from the library according to the target situation.

At the same time, Atlas's Model Predictive Controller (MPC) will adjust its force, posture, action timing and other details to deal with the environment, foot slippage and other possible real-time factors.

In addition, MPC allows Atlas to predict the next action across behavior boundaries. For example, when it knows that this jump is followed by a backflip, it can automatically create a transition from one behavior to the next, so that each step is naturally coherent.

After five years of iteration, Atlas has gone from stumbling to an easy backflip, as if he had completed 1/4 of the human journey.

I believe that seeing its perfect performance, the "old fathers" of Boston Dynamics will raise their arms and shout like the Atlas who completed the back somersault.

Reference:

Https://futurism.com/the-byte/boston-dynamics-robot-failing

This article comes from the official account of Wechat: Xin Zhiyuan (ID:AI_era)

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