HAL(Hybrid Assistive Limb): Exoskeleton from Cyberdine

When a person attempts to walk, for instance, the brain sends electrical impulses to muscles. when they arrive at muscles, faint bio-electrical signals appear on skin surfaces. HAL's system works as described below.

1. The bio-electrical sensors attached to the skin read the signals
2. The computer immediately analyzes how much power the wearer intends to generate
3. Calculates the adequate amount of power assist and command power units
4. Power units generate torque and put limbs into action.

These process is completed a fraction of a second earlier than the muscles actually move.Source