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They're getting awfully close to an operational system;
The Berkeley Lower Extremity Exoskeleton (BLEEX), as it's officially called, consists of mechanical metal leg braces that are connected rigidly to the user at the feet, and, in order to prevent abrasion, more compliantly elsewhere. The device includes a power unit and a backpack-like frame used to carry a large load. Such a machine could become an invaluable tool for anyone who needs to travel long distances by foot with a heavy load.
The exoskeleton could eventually be used by army medics to carry injured soldiers off a battlefield, firefighters to haul their gear up dozens of flights of stairs to put out a high-rise blaze, or rescue workers to bring in food and first-aid supplies to areas where vehicles cannot enter. 'The fundamental technology developed here can also be developed to help people with limited muscle ability to walk optimally,' said Kazerooni.
The researchers point out that the human pilot does not need a joystick, button or special keyboard to "drive" the device. Rather, the machine is designed so that the pilot becomes an integral part of the exoskeleton, thus requiring no special training to use it. In the UC Berkeley experiments, the human pilot moved about a room wearing the 100-pound exoskeleton and a 70-pound backpack while feeling as if he were lugging a mere 5 pounds.
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The UC Berkeley engineers are also developing a quieter, more powerful engine, and a faster, more intelligent controller, that will enable the exoskeleton to carry loads up to 120 pounds within the next six months. In addition, the researchers are studying what it takes to enable pilots to run and jump with the exoskeleton legs.
The engineers point out that while the exoskeleton does the heavy lifting, the human contributes to the balance. "The pilot is not 'driving' the exoskeleton," said Kazerooni. "Instead, the control algorithms in the computer are constantly calculating how to move the exoskeleton so that it moves in concert with the human."
Appropriately enough, the first step in the project began with researchers analyzing the human step. They gathered information about how people walk and move - including the propulsive force and torque needed from the ankles and the shock absorbing power of the knees - so they could adapt the exoskeleton to a wide range of natural human movements.
"Many scientists and engineers have been attempting to build a robotic strength enhancing device since the 1950s, and they've failed," said Kazerooni. "It is only through recent engineering breakthroughs that this dream is now becoming a reality."
The exoskeleton could eventually be used by army medics to carry injured soldiers off a battlefield, firefighters to haul their gear up dozens of flights of stairs to put out a high-rise blaze, or rescue workers to bring in food and first-aid supplies to areas where vehicles cannot enter. 'The fundamental technology developed here can also be developed to help people with limited muscle ability to walk optimally,' said Kazerooni.
The researchers point out that the human pilot does not need a joystick, button or special keyboard to "drive" the device. Rather, the machine is designed so that the pilot becomes an integral part of the exoskeleton, thus requiring no special training to use it. In the UC Berkeley experiments, the human pilot moved about a room wearing the 100-pound exoskeleton and a 70-pound backpack while feeling as if he were lugging a mere 5 pounds.
>
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The UC Berkeley engineers are also developing a quieter, more powerful engine, and a faster, more intelligent controller, that will enable the exoskeleton to carry loads up to 120 pounds within the next six months. In addition, the researchers are studying what it takes to enable pilots to run and jump with the exoskeleton legs.
The engineers point out that while the exoskeleton does the heavy lifting, the human contributes to the balance. "The pilot is not 'driving' the exoskeleton," said Kazerooni. "Instead, the control algorithms in the computer are constantly calculating how to move the exoskeleton so that it moves in concert with the human."
Appropriately enough, the first step in the project began with researchers analyzing the human step. They gathered information about how people walk and move - including the propulsive force and torque needed from the ankles and the shock absorbing power of the knees - so they could adapt the exoskeleton to a wide range of natural human movements.
"Many scientists and engineers have been attempting to build a robotic strength enhancing device since the 1950s, and they've failed," said Kazerooni. "It is only through recent engineering breakthroughs that this dream is now becoming a reality."