Named RAPHaEL (Robotic Air Powered Hand with Elastic Ligaments), the fully articulated robotic hand is powered by a compressor air tank at 60 psi and a novel accordion type tube actuator. Microcontroller commands operate the movement to coordinate the motion of the fingers.
“This air-powered design is what makes the hand unique, as it does not require the use of any motors or other actuators, the grasping force and compliance can be easily adjusted by simply changing the air pressure,” said Dennis Hong, RoMeLa (http://www.me.vt.edu/romela/) director and the faculty adviser on the project. RoMeLa is part of Virginia Tech’s department of mechanical engineering (ME).
The grip derives from the extent of pressure of the air. A low pressure is used for a lighter grip, while a higher pressure allows for a sturdier grip. The compliance of compressed air also aids in the grasping as the fingers can naturally follow the contour of the grasped object.
“There would be great market potential for this hand, such as for robotic prosthetics, due to the previously described benefits, as well as low cost, safety and simplicity,” Hong said. The concept has won RoMeLa first place in the recent 2008-2009 Compressed Air and Gas Institute (http://www.cagi.org) (CAGI)’s Innovation Award Contest, with team members sharing $2,500 and the College of Engineering receiving a separate $8,000 monetary award.
The $10,500 prize was announced in April by the Cleveland, Ohio-based CAGI, an industry organization. The design competition was an invitation-only program, with projects overviews – including written reports and video – being sent to the judging panel. Teams from Virginia Tech, the Milwaukee School of Engineering and Buffalo State College each submitted entries on their air-powered designs for judging. Six teams in all participated, according to Hong.
It is the second year in a row that RoMeLa has won first place in the CAGI competition. A judge on the panel said of the robotic hand, “It is a cutting edge concept, and the engineering was no less than brilliant.”
Student team members, all ME majors, are:• Colin Smith of Reston, Va., a senior
Hong has said CHARLI is the first full-sized bipedal walking humanoid robot to be built entirely in the United States. The 5-foot tall robot will be used as a general humanoid research platform as well as for the RoboCup Humanoid Teen size league for RoboCup 2010.
The larger CHARLI project is partially sponsored by the Virginia Tech Student Engineering Council (https://www.sec.vt.edu/) and by the National Science Foundation (NSF). Hong said he hopes to have CHARLI one day walking about around campus and completing tours of Virginia Tech for visitors and potential students.
RoMeLa already has captured several prizes for its work, including the grand prize at the 2008 International Capstone Design Fair (http://www.vtnews.vt.edu/story.php?relyear=2008&itemno=808) for a trio of pole-climbing serpentine robots designed to take the place of construction workers tasked with dangerous jobs such as inspecting high-rises or underwater bridge piers.
Other award-winning student RoMeLa projects (http://www.vt.edu/spotlight/achievement/2008-06-30_romela/2008-06-30_romela.html) include TEAM DARwIn winning RoboCup 2007, an international autonomous robot soccer competition. The group was the first and only team from the United States ever to qualify for the RoboCup humanoid division.
The group also won third place at the 2007 DARPA Urban Challenge (http://www.vt.edu/spotlight/achievement/2007-10-29_victortango/2007-10-29-victortango.html), an autonomous vehicle race in the urban environment.
Hong (http://www.me.vt.edu/people/faculty/hong.html) received his B.S. degree in mechanical engineering from the University of Wisconsin-Madison in 1994, and his master of science and Ph.D. degrees in mechanical engineering from Purdue University in 1999 and 2002, respectively.
The College of Engineering (http://www.eng.vt.edu/) at Virginia Tech is internationally recognized for its excellence in 14 engineering disciplines and computer science. The college’s 5,700 undergraduates benefit from an innovative curriculum that provides a “hands-on, minds-on” approach to engineering education, complementing classroom instruction with two unique design-and-build facilities and a strong Cooperative Education Program. With more than 50 research centers and numerous laboratories, the college offers its 1,800 graduate students opportunities in advanced fields of study such as biomedical engineering, state-of-the-art microelectronics, and nanotechnology. Virginia Tech, the most comprehensive university in Virginia, is dedicated to quality, innovation, and results to the commonwealth, the nation and the world.
Steven Mackay | Newswise Science News
Further reports about: > Ambient Air > CAGI > CHARLI > Cognitive Humanoid Robot with Learning Intelligence > Compressed AirRobotics and Mechanisms Laboratory > Dexterous Robotic Hand > Ferchau Engineering > Humanoid > Microcontroller > RoMeLa > RoboCup > Robotic > Robotic Air Powered Hand with Elastic Ligaments > Robotics and Mechanisms Laboratory > humanoid robot > robotic hand > tube actuator
A ski jacket that actively gets rid of sweat
30.01.2018 | Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt
A fashionable chemical and biological threat detector-on-a-ring
12.10.2017 | American Chemical Society
A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.
The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
23.07.2018 | Science Education
23.07.2018 | Health and Medicine
23.07.2018 | Life Sciences