Autonomous Learning Group University of Tübingen

Previous Projects

The Playful Machine

Self-organizing robots driven by homeokinesis

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Autonomous robots may become our closest companions in the near future. While the technology for physically building such machines is already available today, a problem lies in the generation of the behavior for such complex machines. Nature proposes a solution: young children and higher animals learn to master their complex brain-body systems by playing. Can this be an option for robots? How can a machine be playful? Our work provides some answers by developing a general principle – homeokinesis, the dynamical symbiosis between brain, body, and environment – that is shown to drive robots to self-determined, individual development in a playful and obviously embodiment-related way: a dog-like robot starts playing with a barrier, eventually jumping or climbing over it; a snakebot develops coiling and jumping modes; humanoids develop climbing behaviors when fallen into a pit, or engage in wrestling-like scenarios when encountering an opponent.

Humanoid scenarios: A normal, B bungee, C high bar, D pit.
Humanoid scenarios: (A) normal, (B) bungee, (C) high bar, (D) pit.

Ralf Der and Georg Martius wrote a book called The Playful Machine – Theoretical Foundations and Practical Realization of Self-Organizing Robots about our research. The book also contains chapters on guided self-organization, a method that helps to make the playful machines fit towards fulfilling tasks. The book provides two levels of presentation. Students and scientific researchers interested in the field of robotics, self-organization and dynamical systems theory may be satisfied by the in-depth mathematical analysis of the principle, the bootstrapping scenarios, and the emerging behaviors. But the book additionally comes with a robotics simulator inviting also the non-scientific reader to simply enjoy the fabulous world of playful machines by performing the numerous experiments.

Guided self-organization.
Guided self-organization.

Visit the home page of the book or our former group homepage for many videos, publications etc.

Publications

2012

2010

LpzRobots: A free and powerful robot simulator
LpzRobots: A free and powerful robot simulator
Georg Martius, Frank Hesse, Frank Güttler, Ralf Der
 ·  2010