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Pa. students’ robotic arm can make you stronger

  • In this Friday, Dec. 6, 2013 photo, Nick McGill wears the Titan Arm as he poses at the University of Pennsylvania in Philadelphia. The robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)

    In this Friday, Dec. 6, 2013 photo, Nick McGill wears the Titan Arm as he poses at the University of Pennsylvania in Philadelphia. The robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)

  • In this Friday, Dec. 6, 2013 photo, Nick McGill wears the Titan Arm as he poses at the University of Pennsylvania in Philadelphia. The robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)

    In this Friday, Dec. 6, 2013 photo, Nick McGill wears the Titan Arm as he poses at the University of Pennsylvania in Philadelphia. The robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)

  • In this Friday, Dec. 6, 2013 photo, Nick McGill wears the Titan Arm as he poses at the University of Pennsylvania in Philadelphia. The robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)

    In this Friday, Dec. 6, 2013 photo, Nick McGill wears the Titan Arm as he poses at the University of Pennsylvania in Philadelphia. The robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)

  • In this Friday, Dec. 6, 2013 photo, Nick McGill, center, wears the Titan Arm, as he poses alongside his student colleagues Elizabeth Beattie, left, and Nick Parrotta at the University of Pennsylvania in Philadelphia. The robotic device invented by the University of Pennsylvania engineering students, along with a fourth student, Niko Vladimiro, can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)

    In this Friday, Dec. 6, 2013 photo, Nick McGill, center, wears the Titan Arm, as he poses alongside his student colleagues Elizabeth Beattie, left, and Nick Parrotta at the University of Pennsylvania in Philadelphia. The robotic device invented by the University of Pennsylvania engineering students, along with a fourth student, Niko Vladimiro, can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)

  • In this Friday, Dec. 6, 2013 photo, a view of the Titan Arm is seen at the University of Pennsylvania in Philadelphia. The  robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)

    In this Friday, Dec. 6, 2013 photo, a view of the Titan Arm is seen at the University of Pennsylvania in Philadelphia. The robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)

  • In this Friday, Dec. 6, 2013 photo, a view of the Titan Arm is seen at the University of Pennsylvania in Philadelphia. The  robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)

    In this Friday, Dec. 6, 2013 photo, a view of the Titan Arm is seen at the University of Pennsylvania in Philadelphia. The robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)

  • In this Friday, Dec. 6, 2013 photo, Nick McGill wears the Titan Arm as he poses at the University of Pennsylvania in Philadelphia. The robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)

    In this Friday, Dec. 6, 2013 photo, Nick McGill wears the Titan Arm as he poses at the University of Pennsylvania in Philadelphia. The robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)

  • A pedestrian walks past a mural of former South African President Nelson Mandela during a snow storm in Philadelphia, Tuesday Dec. 10, 2013.  World leaders, celebrities, and citizens from all walks of life gathered on Tuesday in South Africa to pay respects during a memorial service for the former president and anti-apartheid icon who died on Dec. 5, 2013.  (AP Photo/Peter Tobia)

    A pedestrian walks past a mural of former South African President Nelson Mandela during a snow storm in Philadelphia, Tuesday Dec. 10, 2013. World leaders, celebrities, and citizens from all walks of life gathered on Tuesday in South Africa to pay respects during a memorial service for the former president and anti-apartheid icon who died on Dec. 5, 2013. (AP Photo/Peter Tobia)

  • A pedestrian walks past a mural of former South African President Nelson Mandela during a snow storm in Philadelphia, Tuesday Dec. 10, 2013.  World leaders, celebrities, and citizens from all walks of life gathered on Tuesday in South Africa to pay respects during a memorial service for the former president and anti-apartheid icon who died on Dec. 5, 2013.  (AP Photo/Peter Tobia)

    A pedestrian walks past a mural of former South African President Nelson Mandela during a snow storm in Philadelphia, Tuesday Dec. 10, 2013. World leaders, celebrities, and citizens from all walks of life gathered on Tuesday in South Africa to pay respects during a memorial service for the former president and anti-apartheid icon who died on Dec. 5, 2013. (AP Photo/Peter Tobia)

  • In this Friday, Dec. 6, 2013 photo, Nick McGill wears the Titan Arm as he poses at the University of Pennsylvania in Philadelphia. The robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)
  • In this Friday, Dec. 6, 2013 photo, Nick McGill wears the Titan Arm as he poses at the University of Pennsylvania in Philadelphia. The robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)
  • In this Friday, Dec. 6, 2013 photo, Nick McGill wears the Titan Arm as he poses at the University of Pennsylvania in Philadelphia. The robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)
  • In this Friday, Dec. 6, 2013 photo, Nick McGill, center, wears the Titan Arm, as he poses alongside his student colleagues Elizabeth Beattie, left, and Nick Parrotta at the University of Pennsylvania in Philadelphia. The robotic device invented by the University of Pennsylvania engineering students, along with a fourth student, Niko Vladimiro, can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)
  • In this Friday, Dec. 6, 2013 photo, a view of the Titan Arm is seen at the University of Pennsylvania in Philadelphia. The  robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)
  • In this Friday, Dec. 6, 2013 photo, a view of the Titan Arm is seen at the University of Pennsylvania in Philadelphia. The  robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)
  • In this Friday, Dec. 6, 2013 photo, Nick McGill wears the Titan Arm as he poses at the University of Pennsylvania in Philadelphia. The robotic device invented by four University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds. The prize-winning prototype builds on existing research in the field of exoskeletons, an area that experts say will grow as the population ages. Students say some current exoskeleton models can cost $100,000. They created the award-winning Titan Arm for less than $2,000. (AP Photo/Jacqueline Larma)
  • A pedestrian walks past a mural of former South African President Nelson Mandela during a snow storm in Philadelphia, Tuesday Dec. 10, 2013.  World leaders, celebrities, and citizens from all walks of life gathered on Tuesday in South Africa to pay respects during a memorial service for the former president and anti-apartheid icon who died on Dec. 5, 2013.  (AP Photo/Peter Tobia)
  • A pedestrian walks past a mural of former South African President Nelson Mandela during a snow storm in Philadelphia, Tuesday Dec. 10, 2013.  World leaders, celebrities, and citizens from all walks of life gathered on Tuesday in South Africa to pay respects during a memorial service for the former president and anti-apartheid icon who died on Dec. 5, 2013.  (AP Photo/Peter Tobia)

PHILADELPHIA — Need a hand lifting something? A robotic device invented by University of Pennsylvania engineering students can help its wearer carry an additional 40 pounds.

Titan Arm looks and sounds like part of a superhero’s costume. But its creators say it’s designed for ordinary people — those who need either physical rehabilitation or a little extra muscle for their job.

In technical terms, the apparatus is an untethered, upper-body exoskeleton; to the layman, it’s essentially a battery-powered arm brace attached to a backpack. Either way, Titan Arm’s cost-efficient design has won the team accolades and at least $75,000 in prize money.

“They built something that people can relate to,” said Robert Carpick, chairman of Penn’s mechanical engineering department. “And of course it appeals clearly to what we’ve all seen in so many science-fiction movies of superhuman strength being endowed by an exoskeleton.”

The project builds on existing studies of such body equipment, sometimes called “wearable robots.” Research companies have built lower-body exoskeletons that help paralyzed people walk, though current models aren’t approved for retail and can cost $50,000 to $100,000.

The Penn students were moved by the power of that concept — restoring mobility to those who have suffered traumas — as well as the idea of preventing injuries in those who perform repetitive heavy-lifting tasks, team member Nick Parrotta said.

“When we started talking to physical therapists and prospective users, or people who have gone through these types of injuries, we just kept on getting more and more motivated,” said Parrotta, now in graduate school at the university.

So for their senior capstone project last year, Parrotta and classmates Elizabeth Beattie, Nick McGill and Niko Vladimirov set out to develop an affordable, lightweight suit for the right arm. They modeled pieces using 3-D printers and computer design programs, eventually making most components out of aluminum, Beattie said.

The final product cost less than $2,000 and weighs 18 pounds — less than the backpack that Beattie usually carries. A handheld joystick controls motorized cables that raise and lower the arm; sensors measure the wearer’s range of motion to help track rehab progress.

Since its unveiling, Titan Arm has won the $10,000 Intel Cornell Cup USA and the $65,000 James Dyson Award. The resulting publicity generated a slew of interest from potential users, including grandparents who find it hard to lift their grandchildren.

“We found out that some people can’t even lift a cast-iron pan to cook dinner,” McGill said.

Experts say the aging population represents a potentially big customer base for exoskeletons, which originally were researched for military applications.

The Titan team hopes to refine its prototype, although three members are now busy with graduate studies at Penn and one is working on the West Coast.

Among the considerations, Parrotta said, are different control strategies and more innovative materials and manufacturing.

And, of course, a second arm.

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