November 21, 2011
Swarm of tiny, collaborative robots will be made available to researchers, educators, and enthusiasts
Photo courtesy of Michael Rubenstein
The Kilobots are coming.
Computer scientists and engineers at Harvard University have developed and licensed technology that will make it easy to test collective algorithms on hundreds, or even thousands, of tiny robots.
Called Kilobots, the quarter-sized bug-like devices scuttle around on three toothpick-like legs, interacting and coordinating their own behavior as a team. A June 2011 Harvard Technical Report demonstrated a collective of 25 machines implementing swarming behaviors such as foraging, formation control, and synchronization.
Once up and running, the machines are fully autonomous, meaning there is no need for a human to control their actions.
The communicative critters were created by members of the Self-Organizing Systems Research Group led by Radhika Nagpal, the Thomas D. Cabot Associate Professor of Computer Science at the Harvard School of Engineering and Applied Sciences (SEAS) and a Core Faculty Member at the Wyss Institute for Biologically Inspired Engineering at Harvard. Her team also includes Michael Rubenstein, a postdoctoral fellow at SEAS; and Christian Ahler, a fellow of SEAS and the Wyss Institute.
Thanks to a technology licensing deal with the K-Team Corporation, a Swiss manufacturer of high-quality mobile robots, researchers and robotics enthusiasts alike can now take command of their own swarm.
One key to achieving high-value applications for multi-robot systems in the future is the development of sophisticated algorithms that can coordinate the actions of tens to thousands of robots.
"The Kilobot will provide researchers with an important new tool for understanding how to design and build large, distributed, functional systems," says Michael Mitzenmacher, Area Dean for Computer Science at SEAS.
"Plus," he adds, "tiny robots are really cool!"
The name "Kilobot" does not refer to anything nefarious; rather, it describes the researchers' goal of quickly and inexpensively creating a collective of a thousand bots.
Inspired by nature, such swarms resemble social insects, such as ants and bees, that can efficiently search for and find food sources in large, complex environments, collectively transport large objects, and coordinate the building of nests and other structures.
Due to reasons of time, cost, and simplicity, the algorithms being developed today in research labs are only validated in computer simulation or using a few dozen robots at most.
In contrast, the design by Nagpal's team allows a single user to easily oversee the operation of a large Kilobot collective, including programming, powering on, and charging all robots, all of which would be difficult (if not impossible) using existing robotic systems.
So, what can you do with a thousand tiny little bots?
Robot swarms might one day tunnel through rubble to find survivors, monitor the environment and remove contaminants, and self-assemble to form support structures in collapsed buildings.
They could also be deployed to autonomously perform construction in dangerous environments, to assist with pollination of crops, or to conduct search and rescue operations.
For now, the Kilobots are designed to provide scientists with a physical testbed for advancing the understanding of collective behavior and realizing its potential to deliver solutions for a wide range of challenges.
Funding was provided by the National Science Foundation and the Wyss Institute.
____________________________________________________________________________________________
Additional resources
All materials courtesy of Radhika Nagpal, Harvard School of Engineering and Applied Sciences
Video 1: Introduction to Kilobot
Video 2: Demonstrations using a small number of Kilobots:
Video 3: Demonstrations of Kilobot collective behaviors on up to 29 robots:
____________________________________________________________________________________________________________________________
Engineering and applied sciences at Harvard has a long and distinguished history at Harvard, beginning with the creation of the Lawrence Scientific School in 1847 (named for donor Abbott Lawrence).
During the 19th and 20th centuries, the structure to support faculty and research in engineering applied sciences underwent several reorganizations (ranging from a graduate school, department (several), and division) and names (from DEAP to DAS to DEAS).
In 2007, in recognition of the growing preeminence of engineering and applied sciences, the University transitioned the former Division of Engineering and Applied Sciences into a school.
Through collaboration with researchers from all parts of Harvard, other universities, and industry, the Harvard School of Engineering and Applied Sciences (SEAS) brings discovery and innovation directly to bear on improving human life and society in the 21st century.
In pursuing its aims, SEAS will grow, but will remain: a different kind of engineering program rooted in science, interdisciplinary in culture, and committed to embracing Harvard’s breadth and depth across the sciences and professions.
