Miche: Modular Shape Formation by Self-Disassembly

Authors:
Kyle Gilpin;Keith Kotay;Daniela Rus;Iuliu Vasilescu
Affiliations:
MIT Computer Science and Artificial Intelligence Lab32 Vassar St Room 32-376 Cambridge, MA 02139, USA;MIT Computer Science and Artificial Intelligence Lab32 Vassar St Room 32-376 Cambridge, MA 02139, USA;MIT Computer Science and Artificial Intelligence Lab32 Vassar St Room 32-376 Cambridge, MA 02139, USA;MIT Computer Science and Artificial Intelligence Lab32 Vassar St Room 32-376 Cambridge, MA 02139, USA
Venue:
International Journal of Robotics Research
Year:
2008

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Abstract

We describe the design, implementation and programming of a set of robots that, starting from an amorphous arrangement, can be assembled into arbitrary shapes and then commanded to self-disassemble in an organized manner to obtain a goal shape. We present custom hardware, distributed algorithms and experimental results from hundreds of trails which show the system successfully forming complex 3D shapes. Each of the 28 modules in the system is implemented as a 1.8-inch autonomous cube-shaped robot able to connect to and communicate with its immediate neighbors. Embedded microprocessors control each module's magnetic connection mechanisms and infrared communication interfaces. When assembled into a structure, the modules form a system that can be virtually sculpted using a computer interface and a distributed process. The group of modules collectively decides which elements are a part of the final shape and which are not using algorithms that minimize information transmission and storage. Finally, the modules not in the structure disengage their magnetic couplings and fall away under the influence of an external force: in this case, gravity.