Originally published June 10 2004
Breakthrough in artificial muscles promises to revolutionize the
robotics industry
by Mike Adams, the Health Ranger, NaturalNews Editor
How do you a build the musculoskeletal system a humanoid robot? If
you're Sony, you use a system of servo motors, gears, metal rods and
cables. But that's a poor imitation of the human body where the movement
of limbs is dictated by the smooth, coordinated contraction of muscle
fibers. Enter the breakthrough: electroactive polymers, also called
artificial muscles. Recently unveiled by a scientist in
Albuquerque, these artificial muscles contract when exposed to an
electric current. Attach one end to the pelvis of a humanoid robot and
the other end to the back of its knee and you have a robot that can do
leg curls. Strap together enough such fibers, couple them with a smart
contact feedback system, and you can teach a robot to walk using its own
artificial muscles. Imagine it: no motors to wear out, no cables to
snap, no rods to break: just muscle-like fibers that contract in
response to an electric current. It's nothing short of a revolution in
robotics. No doubt, the industry will rely heavily on this technology in
the years ahead. There's even hope that such fibers might somehow be
used in human patients to aid those who have, for one reason or another,
lost the use of their limbs.
In a creepy sort of way, these new
artificial muscles are now about to be put to the test in an arm
wrestling contest with high school students. As part of an upcoming
contest hosted by NASA, high school students will go hand-to-hand with
an artificial forearm powered by these electroactive polymers. Assuming
the robotic arm doesn't rip the limbs off these students (Terminator,
anyone?), this P.R. event should serve up some much-needed public
interest in robotics.
NASA's Jet Propulsion Laboratory is holding an arm-wrestling contest
in San Diego in March 2005, and Albuquerque scientist and inventor
Mohsen Shahinpoor wants to win.
He's entering a robotic arm that will be powered by artificial muscles
he has invented.
NASA is sponsoring the contest that will pit robotic arms fitted with
artificial muscles against a human being, probably a teenager.
They mimic human muscle movements, and in time, might be used to
replace damaged muscles in the human body.
They also stand a good chance of revolutionizing the field of
robotics.
NASA, for instance, is hoping to build a landing rover with legs
fitted with artificial muscles.
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