The
goal of the Biomimetic Millisystems Lab is to harness
features
of animal manipulation, locomotion, sensing, actuation,
mechanics,
dynamics,
and control strategies to radically improve millirobot
capabilities.
Research in the lab ranges from fundamental
understanding of mechanical
principles to novel fabrication techniques to system
integration of
autonomous
millirobots. The lab works closely with biologists to
develop models
of function which can be tested on engineered and
natural systems.
The lab's current research is centered on all-terrain
crawling using
nanostructured adhesives and bioinspired flight.
Cooperative Control for Window Traversal with an Ornithopter MAV
(Mar. 2013)
We demonstrate
cooperative target-seeking between a 13 gram ornithopter (H2Bird),
and a lightweight ground station.
The ground station provides
heading estimates to the ornithopter using a real-time
motion tracking algorithm.
Julian et al. Autonomous Agents and Multiagent Systems (AAMAS2013).
link
Controllable Particle Adhesion (Feb. 2013)
Controllable adhesion to glass spheres with a magnetically actuated
synthetic gecko adhesive is demonstrated. Results show sphere
pull-off forces can be increased 10-fold by changing the ridge
orientation via the external magnetic field, and that the effective
elastic modulus can be changed from 65 kPa to 1.5 MPa.
Gillies et al.
Advanced Functional Materials, 2013
A Sprawl Tuned Autonomous Robot
(Feb. 2013)
This robot has a variable leg
sprawl angle in the transverse plane to adapt its stiffness,
height, and leg-to-surface contact angle.
Contact angle and normal contact forces are
substantially reduced when the sprawl angle is low, and the
velocity increases over smooth surfaces, with stable running at
all velocities up to 5.2 m/s.
Zarrouk et al. to appear ICRA 2013.
Movie
Animal-inspired Design and Aerodynamic Stabilization of a Hexapedal Millirobot
(Jan. 2013)
The VelociRoACH is a 10 cm long, 30 gram
hexapedal millirobot capable of running at 2.7 m/s, making
it the fastest legged robot built to date, relative to scale.
Dynamic similarity technique combined with aerodynamic damping
provides stability at high speeds.
D. Haldane et al. IEEE ICRA May 2013.
paper Movie
Dynamic Climbing of Smooth
Surfaces (Oct.
2012) Dynamic climbing
of near-vertical surfaces introduces reaction
forces which require greater normal adhesion to
prevent falling. Dynamic
climbing on a 30 degree slope succeeds at 12 Hz
leg rate, but only 4 Hz on a 70 degree
slope. Birkmeyer,
Gillies, Fearing IROS Oct 2012
6 legged TAYLRoACH (July 2012) The 100-mm scale
Hexapedal robot TAYLRoACH
can rapidly maneuver with 90 degrees turns while running.
Kohut et al. CLAWAR July 2012.
Tail Maneuvers
movie
Rapid
Inversion:
Running Animals and Robots (June
2012)
Cockroaches and geckos
can escape when running by swinging under a
ledge in a pendulum like motion. The DASH
robot, with a special foot attachment, can also
swing in a similar manner.
Mongeau et. al PLoS June 2012
OctoRoACH
with Tail (May 2012) The 100-mm scale
OctoRoACH robot can turn using differential drive
at 100 degrees per
second, or with a dynamic tail with peak turn
rates of 400 degrees per
second.
Pullin et al. ICRA
2012
movie
BOLT:
Bipedal
Ornithopter for Locomotion Transitioning (Sept. 2011) Bolt is a 13 gram
ornithopter with legs for mixed-mode locomotion.
In running modes,
wings provide passive stability. With wing
assisted running, BOLT can
run at 2.5 m/sec while maintaining ground contact.
IROS
2011 .
Ambulating Robots The goal of this
work is
to develop high performance ambulating
milli-robots using minimal
actuation and passive stabilization mechanisms,
combined with onboard
high level control.
Ornithopter
Project
Bioinspired sensors and control strategies are being
developed for
coordinated flight of multiple ornithopters.
Folding
Prototyping of Meso-
and Milli- Robots
Using laser cutting of composite materials, we
rapidly prototype small
scale
robots using flexure technology. Example structures
with dozens of
joints have been constructed.
(Shown is autonomous miniRoACH from 2008.)
Past
Research Projects
Millirobot
Rapid
Prototyping
We are developing a low cost (<$1000))
desktop factory which will
allow users to build millirobots from a kit
of components.
Micromechanical
Flying
Insect
The goal of this project is to develop an
autonomous 0.1 gram flying
robot using insect-inspired wing
kinematics.