Let me introduce to you Rezero. This little fellow was developed by a group of 10 undergraduate students at the Autonomous Systems Laboratory at ETH-Zurich.
Dopustite mi da vam predstavim Rezera. Ovog malog prijatelja izradila je grupa od 10 studenata u Laboratoriju autonomnih sustava pri Švicarskom federalnom institutu za tehnologiju u Zürichu.
Our robot belongs to a family of robots called Ballbots. Instead of wheels, a Ballbot is balancing and moving on one single ball. The main characteristics of such a system is that there's one sole contact point to the ground. This means that the robot is inherently unstable. It's like when I am trying to stand on one foot.
Naš robot pripada porodici robota koja se zove ballbots. Umjesto na kotačima, ballbot balansira i kreće se na jednoj lopti. Osnovna značajka ovakvog sistema je da postoji samo jedna dodirna točka s tlom. To znači da je robot sam po sebi nestabilan. To je kao kad bih ja pokušao stajati na jednoj nozi.
You might ask yourself, what's the usefulness of a robot that's unstable? Now we'll explain that in a second. Let me first explain how Rezero actually keeps his balance. Rezero keeps his balance by constantly measuring his pitch angle with a sensor. He then counteracts and avoids toppling over by turning the motors appropriately. This happens 160 times per second, and if anything fails in this process, Rezero would immediately fall to the ground.
Mogli biste se pitati, kakva korist od toga da je robot nestabilan? Objasnit ću to za koji trenutak. Dopustite mi da prvo objasnim kako Rezero zapravo održava ravnotežu. Rezero održava ravnotežu tako da konstantno senzorom mjeri kut nagiba. On tada suzbija i izbjegava prevrtanja okretanjem motora na odgovarajući način. To se događa 160 puta u sekundi i ako bi štogod zakazalo u tom procesu, Rezero bi odmah pao na tlo.
Now to move and to balance, Rezero needs to turn the ball. The ball is driven by three special wheels that allow Rezero to move into any direction and also move around his own axis at the same time. Due to his instability, Rezero is always in motion. Now here's the trick. It's indeed exactly this instability that allows a robot to move very [dynamically]. Let's play a little. You may have wondered what happens if I give the robot a little push. In this mode, he's trying to maintain his position.
Da bi se kretao i balansirao, Rezero mora okretati loptu. Lopta je vođena s tri specijalna kotača koja dopuštaju Rezeru da se kreće u bilo kojem smjeru i da se istovremeno kreće i oko vlastite osi. Zbog te nestabilnosti, Rezero je uvijek u pokretu. Evo u čemu je trik. Upravo ta nestabilnost omogućuje robotu da se kreće vrlo dinamično. Poigrajmo se malo. Možda se pitate što bi se dogodilo kad bih ga malo gurnuo. U ovom načinu on pokušava zadržati svoju poziciju.
For the next demo, I'd like you to introduce to my colleagues Michael, on the computer, and Thomas who's helping me onstage. In the next mode, Rezero is passive, and we can move him around. With almost no force I can control his position and his velocity. I can also make him spin. In the next mode, we can get Rezero to follow a person. He's now keeping a constant distance to Thomas. This works with a laser sensor that's mounted on top of Rezero. With the same method, we can also get him to circle a person. We call this the orbiting mode. All right, thank you, Thomas. (Applause)
Za sljedeću demonstraciju želio bih vas upoznati sa svojim kolegama Michaelom, na računalu, i Thomasom koji će mi pomagati na pozornici. U sljedećem stanju Rezero je pasivan, i možemo ga pokretati. Gotovo bez sile mogu kontrolirati njegovu poziciju i brzinu. Mogu ga i zavrtjeti. U sljedećem stanju Rezero može pratiti osobu. Sada održava stalnu udaljenost od Thomasa. Ovo funkcionira pomoću laserskog senzora koji je montiran na vrh Rezera. Koristeći istu metodu možemo učiniti da kruži oko neke osobe. Nazivamo to orbitirajući način. U redu, hvala, Thomas. (Pljesak)
Now, what's the use of this technology? For now, it's an experiment, but let me show you some possible future applications. Rezero could be used in exhibitions or parks. With a screen it could inform people or show them around in a fun and entertaining way. In a hospital, this device could be used to carry around medical equipment. Due to the Ballbot system, it has a very small footprint and it's also easy to move around. And of course, who wouldn't like to take a ride on one of these. And these are more practical applications. But there's also a certain beauty within this technology.
Sada, kako možemo koristiti ovu tehnologiju? Zasad je ovo eksperiment, ali dozvolite da vam pokažem neke od mogućih budućih primjena. Rezero bi se mogao koristiti na izložbama ili u parkovima. Uz ekran mogao bi informirati ljude ili im pokazati uokolo na zabavan način. U bolnici ovaj bi se uređaj mogao koristiti za raznošenje medicinske opreme. Zbog ballbot sistema, ima vrlo mali trag i lako se kreće. I naravno, tko se ne bi poželio provozati na nečem poput ovoga. No to je više praktična primjena. A postoji i određena ljepota u ovoj tehnologiji.
(Music)
(Glazba)
(Applause)
(Pljesak)
Thank you.
Hvala.
(Applause)
(Pljesak)
Thank you.
Hvala.