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Roboclam to the Rescue

Mechanical Engineers' RoboClam Digs Deep for Applications in Anchoring and More

April 1, 2009

Mechanical Engineers designed a robotic clam to mimic the digging motion of the razor clam in nature. In order to achieve such impressive depth and speed while digging, the razor clam opens and closes its shells so quickly, it causes the clam to move up and down rapidly. This motion turns the surrounding sand into a type of quicksand, which aids the creature's downward movement, making it easier to dig through. Using this knowledge, researchers have a computer program control the robot's movement, while a tank of compressed air moves two pneumatic pistons, imitating the clam's natural motion.

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WHAT IS BIOMIMICRY? Biomimicry is a field in which scientists, engineers, and even architects study models and concepts found in nature, and try to use them to design new technologies. Here are some well-known examples of biomimicry: ý Velcro was inspired by cockleburs, which cling tenaciously to clothing and animal fur. ý The design for the Eastgate Building in Harare, Zimbabwe -- the country's largest commercial and shopping complex -- is based on the region's termite mounds. ý Both Leonardo da Vinci and the Wright brothers studied the flight of birds when designing their flying machines. ý Alexander Graham Bell designed his telephone receiver around the principles of the human ear. ý Sonar was inspired by the way whales, dolphins and bats emit high-pitched sounds and analyze the returning echoes to help them navigate.

HOW ROBOTS WORK: Robots are made of roughly the same components as human beings: a body structure with moveable joints; a muscle system outfitted with motors and actuators to move that body structure; a sensory system to collect information from the surrounding environment; a power source to activate the body; and a computer "brain" system to process sensory information and tell the muscles what to do. Robots are manmade machines intended to replicate human and animal behavior. Roboticists can combine these basic elements with other technological innovations to create some very complex robotic systems.

The Institute of Electrical and Electronics Engineers, Inc.-USA, and the American Physical Society contributed to the information contained in the TV portion of this report.

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On The Web: Dig this: RoboClam

To Go Inside This Science: ý
Anette "Peko" Hosoi
617.253.4337
peko@MIT.EDU

Institute of Electrical and Electronics Engineers, Inc.
IEEE
IEEE-USA
Pender McCarter
p.mccarter@ieee.org

James Riordon, Media Relations
American Physical Society
College Park, MD
301-209-3238
Riordon@aps.org


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