In my lab, we build autonomous aerial robots

情態副詞

Unlike the commercially available drones that you can buy today,

this robot doesn't have any GPS on board.

it's hard for robots like this to determine their position.

This robot uses onboard sensors, cameras and laser scanners,

It detects features from the environment,

and it determines where it is relative to those features,

And then it can assemble all these features into a map,

And this map then allows the robot to understand where the obstacles are

is a set of experiments we did inside our laboratory,

where this robot was able to go for longer distances.

So here you'll see, on the top right, what the robot sees with the camera.

and of course this is sped up by a factor of four --

on the main screen you'll see the map that it's building.

So this is a high-resolution map of the corridor around our laboratory.

And in a minute you'll see it enter our lab,

which is recognizable by the clutter that you see.

But the main point I want to convey to you

is that these robots are capable of building high-resolution maps

allowing somebody who is outside the lab, or outside the building

to deploy these without actually going inside,

and trying to infer what happens inside the building.

Now there's one problem with robots like this.

And these robots consume about 100 watts per pound.

And this makes for a very short mission life.

is that these robots have onboard sensors that end up being very expensive --

a laser scanner, a camera and the processors.

what consumer product can you buy in an electronics store

that is inexpensive, that's lightweight, that has sensing onboard and computation?

So this robot uses a Samsung Galaxy smartphone that you can buy off the shelf,

and all you need is an app that you can download from our app store.

And you can see this robot reading the letters, "TED" in this case,

looking at the corners of the "T" and the "E"

and then triangulating off of that, flying autonomously.

That joystick is just there to make sure if the robot goes crazy,

In addition to building these small robots,

we also experiment with aggressive behaviors, like you see here.

So this robot is now traveling at two to three meters per second,

pitching and rolling aggressively as it changes direction.

The main point is we can have smaller robots that can go faster

and then travel in these very unstructured environments.

just like you see this bird, an eagle, gracefully coordinating its wings,

its eyes and feet to grab prey out of the water,

In this case, this is a Philly cheesesteak hoagie that it's grabbing out of thin air.

So you can see this robot going at about three meters per second,

which is faster than walking speed, coordinating its arms, its claws

and its flight with split-second timing to achieve this maneuver.

I want to show you how the robot adapts its flight

whose length is actually larger than the width of the window.

it actually has to pitch and adjust the altitude

But of course we want to make these even smaller,

and we're inspired in particular by honeybees.

So if you look at honeybees, and this is a slowed down video,

they're so small, the inertia is so lightweight --

that they don't care -- they bounce off my hand, for example.

This is a little robot that mimics the honeybee behavior.

because along with the small size you get lower inertia.

along with lower inertia, you're resistant to collisions.

So just like these honeybees, we build small robots.

And this particular one is only 25 grams in weight.

And it can travel up to six meters per second.

it's like a Boeing 787 traveling ten times the speed of sound.

This is probably the first planned mid-air collision, at one-twentieth normal speed.

These are going at a relative speed of two meters per second,

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