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
Rapid Detection of Cracks and Corrosion using Magnetic Stray Flux
28.04.2015 | Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren IZFP
Winter Hack: Textured Rubber that Grips Slick, Icy Surfaces
18.03.2015 | American Institute of Physics (AIP)
The only professorship in Germany to date, one master's programme, one laboratory with worldwide unique equipment and the corresponding research results: The University of Würzburg is leading in the field of biofabrication.
Paul Dalton is presently the only professor of biofabrication in Germany. About a year ago, the Australian researcher relocated to the Würzburg department for...
Physicists have developed an innovative method that could enable the efficient use of nanocomponents in electronic circuits. To achieve this, they have developed a layout in which a nanocomponent is connected to two electrical conductors, which uncouple the electrical signal in a highly efficient manner. The scientists at the Department of Physics and the Swiss Nanoscience Institute at the University of Basel have published their results in the scientific journal “Nature Communications” together with their colleagues from ETH Zurich.
Electronic components are becoming smaller and smaller. Components measuring just a few nanometers – the size of around ten atoms – are already being produced...
Development and implementation of an advanced automobile parking navigation platform for parking services
To fulfill the requirements of the industry, PolyU researchers developed the Advanced Automobile Parking Navigation Platform, which includes smart devices,...
The world's first electrical car and passenger ferry powered by batteries has entered service in Norway. The ferry only uses 150 kWh per route, which...
On Tuesday, 19 May 2015 the research icebreaker Polarstern will leave its home port in Bremerhaven, setting a course for the Arctic. Led by Dr Ilka Peeken from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) a team of 53 researchers from 11 countries will investigate the effects of climate change in the Arctic, from the surface ice floes down to the seafloor.
RV Polarstern will enter the sea-ice zone north of Spitsbergen. Covering two shallow regions on their way to deeper waters, the scientists on board will focus...
20.05.2015 | Event News
18.05.2015 | Event News
12.05.2015 | Event News
27.05.2015 | Power and Electrical Engineering
27.05.2015 | Health and Medicine
27.05.2015 | Physics and Astronomy